Physical activity and exercise

مَا تَذَرُ مِن شَيۡءٍ أَتَتۡ عَلَيۡهِ إِلَّا جَعَلَتۡهُ كَٱلرَّمِيمِ

and it reduced everything it came up against to shreds

قَالَ قَآئِلࣱ مِّنۡهُمۡ لَا تَقۡتُلُواْ يُوسُفَ وَأَلۡقُوهُ فِي غَيَٰبَتِ ٱلۡجُبِّ يَلۡتَقِطۡهُ بَعۡضُ ٱلسَّيَّارَةِ إِن كُنتُمۡ فَٰعِلِينَ

[Another of them] said, ‘Do not kill Joseph, but, if you must, throw him into the hidden depths of a well where some caravan may pick him up.’

ٱذۡهَبُواْ بِقَمِيصِي هَٰذَا فَأَلۡقُوهُ عَلَىٰ وَجۡهِ أَبِي يَأۡتِ بَصِيرࣰ ا وَأۡتُونِي بِأَهۡلِكُمۡ أَجۡمَعِينَ

Take my shirt and lay it over my father’s face: he will recover his sight. Then bring your whole family back to me.’

وَمِنَ ٱلنَّاسِ مَن يَتَّخِذُ مِن دُونِ ٱللَّهِ أَندَادࣰ ا يُحِبُّونَهُمۡ كَحُبِّ ٱللَّهِۖ وَٱلَّذِينَ ءَامَنُوٓاْ أَشَدُّ حُبࣰّ ا لِّلَّهِۗ وَلَوۡ يَرَى ٱلَّذِينَ ظَلَمُوٓاْ إِذۡ يَرَوۡنَ ٱلۡعَذَابَ أَنَّ ٱلۡقُوَّةَ لِلَّهِ جَمِيعࣰ ا وَأَنَّ ٱللَّهَ شَدِيدُ ٱلۡعَذَابِ

Even so, there are some who choose to worship others besides God as rivals to Him, loving them with the love due to God, but the believers have greater love for God. If only the idolaters could see- as they will see when they face the torment- that all power belongs to God, and that God punishes severely

۞إِنَّ قَٰرُونَ كَانَ مِن قَوۡمِ مُوسَىٰ فَبَغَىٰ عَلَيۡهِمۡۖ وَءَاتَيۡنَٰهُ مِنَ ٱلۡكُنُوزِ مَآ إِنَّ مَفَاتِحَهُۥ لَتَنُوٓأُ بِٱلۡعُصۡبَةِ أُوْلِي ٱلۡقُوَّةِ إِذۡ قَالَ لَهُۥ قَوۡمُهُۥ لَا تَفۡرَحۡۖ إِنَّ ٱللَّهَ لَا يُحِبُّ ٱلۡفَرِحِينَ

Qarun was one of Moses’ people, but he oppressed them. We had given him such treasures that even their keys would have weighed down a whole company of strong men. His people said to him, ‘Do not gloat, for God does not like people who gloat

قَالُواْ ٱبۡنُواْ لَهُۥ بُنۡيَٰنࣰ ا فَأَلۡقُوهُ فِي ٱلۡجَحِيمِ

They said, ‘Build a pyre and throw him into the blazing fire.’

Go with this shirt of mine and cast it upon the face of my father so that he may come to seeing. Joseph said, " Take my shirt to Jacob, for his pain has not ceased from the time he saw the shirt stained with the wolf's blood. The balm will also be my shirt. " When they took the shirt from Egypt, the morning breeze was commanded to take the shirt's scent to Jacob's nostrils so that, before Joseph's messenger could give the good news, he would receive it from the Real's mes- senger and recognize the Real's perfect gentleness and favor toward him. According to the tasting of the recognizers, this is the divine breeze that wanders furtively around the world to the doors of the breasts of the faithful and the tawḤīd-voicers to see where there may be a limpid breast and an empty secret core in which to dwell. Her love came to me before I knew love- it came across a carefree heart and took poss

Among the people are some who take peers apart from God, loving them as if loving God. And those who have faith are more intense in love for God. If this were the only verse in the whole Qur'an about the faithful and God's friends, their eminence and honor would be complete, for the Lord of the Worlds is saying, “They love Me intensely and more completely than the unbelievers love their objects of worship.” Do you not see that every once in a while the unbelievers set up another idol and take up another object of worship. Like poor people, they are content with something carved of wood. Then, when they can, they take down the wooden one and make another from silver or gold. If their love for their object of wor- ship is real, why do they turn away from it toward another? They say that a man met a woman recognizer, and her beauty exercised its influence over his heart. He said, “'My all i

It did not leave anything any soul or property that it came upon without making it like decayed bones like something that is withered and in scattered pieces.

And in Musa, when We sent him to Fir'awn with a manifest authority (38)But (he) turned away along with his hosts, and said: "A sorcerer or a madman. (39)So We took him and his armies, and dumped them into the sea (Yamm), for he was blameworthy (40)And in 'Ad when We sent against them the barren wind (41)It spared nothing that it reached, but blew it into broken spreads of rotten ruins (42)And in Thamud, when they were told: "Enjoy yourselves for a while! (43)But they insolently defied the command of their Lord, so the Sa'iqah overtook them while they were looking (44)Then they were unable to rise up, nor could they help themselves (45)(So were) the people of Nuh before them. Verily, they were a people who were rebellious (46) Lessons from the Destruction of Fir'awn, 'Ad, Thamud, and the People of Nuh Allah the Exalted said, وَفِي مُوسَىٰ إِذْ أَرْسَلْنَاهُ إِلَىٰ فِرْعَوْنَ بِسُلْطَان

One of them namely Judah said ‘Do not kill Joseph but cast him throw him into the bottom of a well ghayābat al-jubb is the darkest recess of a well; a variant reading has the plural ghayābāt so that some caravan might pick him up if you are to do anything’ of what you desire in the way of separating Joseph from us so content yourselves with this solution.

Yet there be people who take to themselves compeers idols besides God that is other than God loving them by magnifying them and being subservient to them as God is loved that is as their love of Him; but those who believe love God more ardently than those who love their compeers because the former never reject God whereas the latter when faced with hardship soon abandon those compeers for God; If he if you O Muhammad (s) were to see those who did evil by taking to themselves compeers when idh here denotes idhā they see read either as active yarawna ‘they see’ or passive yurawna ‘they are made to see’ the chastisement you would see a grave sight that this is because the might the power and the vanquishing altogether a circumstantial qualifier belongs to God and that God is terrible in chastisement according to one reading the person listening to the verse governs the verb yarā ‘he sees’ a

حَدَّثَنَا أَحْمَدُ بْنُ مَنِيعٍ، حَدَّثَنَا يَزِيدُ بْنُ هَارُونَ، حَدَّثَنَا الْحَجَّاجُ، عَنْ مَكْحُولٍ، عَنْ أَبِي ثَعْلَبَةَ، وَالْحَجَّاجُ، عَنِ الْوَلِيدِ بْنِ أَبِي مَالِكٍ، عَنْ عَائِذِ اللَّهِ بْنِ عَبْدِ اللَّهِ، أَنَّهُ سَمِعَ أَبَا ثَعْلَبَةَ الْخُشَنِيَّ، قَالَ قُلْتُ يَا رَسُولَ اللَّهِ إِنَّا أَهْلُ صَيْدٍ ‏.‏ قَالَ ‏"‏ إِذَا أَرْسَلْتَ كَلْبَكَ وَذَكَرْتَ اسْمَ اللَّهِ عَلَيْهِ فَأَمْسَكَ عَلَيْكَ فَكُلْ ‏"‏ ‏.‏ قُلْتُ وَإِنْ قَتَلَ قَالَ ‏"‏ وَإِنْ قَتَلَ ‏"‏ ‏.‏ قُلْتُ إِنَّا أَهْلُ رَمْىٍ ‏.‏ قَالَ ‏"‏ مَا رَدَّتْ عَلَيْكَ قَوْسُكَ فَكُلْ ‏"‏ ‏.‏ قَالَ قُلْتُ إِنَّا أَهْلُ سَفَرٍ نَمُرُّ بِالْيَهُودِ وَالنَّصَارَى وَالْمَجُوسِ فَلاَ نَجِدُ غَيْرَ آنِيَتِهِمْ ‏.‏ قَالَ ‏"‏ فَإِنْ لَمْ تَجِدُوا غَيْرَهَا فَاغْسِلُوهَا بِالْمَاءِ ثُمَّ كُلُوا فِيهَا وَاشْرَبُوا ‏"‏ ‏.‏ قَالَ وَفِي الْبَابِ عَنْ عَدِيِّ بْنِ حَاتِمٍ ‏.‏ قَالَ أَبُو عِيسَى هَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ ‏.‏ وَعَائِذُ اللَّهِ بْنُ عَبْدِ اللَّهِ هُوَ أَبُو إِدْرِيسَ الْخَوْلاَنِيُّ وَاسْمُ أَبِي ثَعْلَبَةَ الْخُشَنِيِّ جُرْثُومٌ وَيُقَالُ جُرْثُمُ بْنُ نَاشِرٍ وَيُقَالُ ابْنُ قَيْسٍ ‏.‏

Narrated Abu Tha'labah Al-Khushani:"I said: 'O Messenger of Allah! We are a people who hunt.' He said: 'If you send your dog and you mentioned the Name of Allah upon it, and he catches something for you, then eat it.' I said: 'Even if he kills it?' He said: 'Even if he kills it.' I said: 'We are a people who shoot (at game).' He said: 'What you catch with your bow, then eat it.'" He said: "Then I said:'Indeed we are a people who travel. We come across Jews, Christians, and Zoroastrians, and we do not find vessels other than theirs.' He said: 'If you do not find other than them, then wash them with water, then eat and drink from it

أَخْبَرَنَا أَحْمَدُ بْنُ عَبْدِ الْوَاحِدِ، قَالَ حَدَّثَنَا مَرْوَانُ، - وَهُوَ ابْنُ مُحَمَّدٍ - قَالَ حَدَّثَنَا خَالِدُ بْنُ يَزِيدَ بْنِ صَالِحِ بْنِ صَبِيحٍ الْمُرِّيُّ، قَالَ حَدَّثَنَا إِبْرَاهِيمُ بْنُ أَبِي عَبْلَةَ، عَنِ الْوَلِيدِ بْنِ عَبْدِ الرَّحْمَنِ الْجُرَشِيِّ، عَنْ جُبَيْرِ بْنِ نُفَيْرٍ، عَنْ سَلَمَةَ بْنِ نُفَيْلٍ الْكِنْدِيِّ، قَالَ كُنْتُ جَالِسًا عِنْدَ رَسُولِ اللَّهِ صلى الله عليه وسلم فَقَالَ رَجُلٌ يَا رَسُولَ اللَّهِ أَذَالَ النَّاسُ الْخَيْلَ وَوَضَعُوا السِّلاَحَ وَقَالُوا لاَ جِهَادَ قَدْ وَضَعَتِ الْحَرْبُ أَوْزَارَهَا فَأَقْبَلَ رَسُولُ اللَّهِ صلى الله عليه وسلم بِوَجْهِهِ وَقَالَ ‏ "‏ كَذَبُوا الآنَ الآنَ جَاءَ الْقِتَالُ وَلاَ يَزَالُ مِنْ أُمَّتِي أُمَّةٌ يُقَاتِلُونَ عَلَى الْحَقِّ وَيُزِيغُ اللَّهُ لَهُمْ قُلُوبَ أَقْوَامٍ وَيَرْزُقُهُمْ مِنْهُمْ حَتَّى تَقُومَ السَّاعَةُ وَحَتَّى يَأْتِيَ وَعْدُ اللَّهِ وَالْخَيْلُ مَعْقُودٌ فِي نَوَاصِيهَا الْخَيْرُ إِلَى يَوْمِ الْقِيَامَةِ وَهُوَ يُوحَى إِلَىَّ أَنِّي مَقْبُوضٌ غَيْرَ مُلَبَّثٍ وَأَنْتُمْ تَتَّبِعُونِي أَفْنَادًا يَضْرِبُ بَعْضُكُمْ رِقَابَ بَعْضٍ وَعُقْرُ دَارِ الْمُؤْمِنِينَ الشَّامُ ‏"‏ ‏.‏

It was narrated that Salamah bin Nufail Al-Kindi said:"I was sitting with the Messenger of Allah when a man said: 'O Messenger of Allah! The people have lost interest in horses and put down their weapons, and they say there is no Jihad, and that war has ended.' The Messenger of Allah turned to face him and said: 'They are lying, now the fighting is to come. There will always be a group among my Ummah who will fight for the truth, for whom Allah will cause some people to deviate, and grant them provision from them, until the Hour begins and until the promise of Allah comes. Goodness is tied to the forelocks of horses until the Day of Resurrection. It has been revealed to me that I am going to die and will not stay long, and you will follow me group after group, striking one another's necks. And the place of safety for the believers is Ash-Sham

أَخْبَرَنَا عَمْرُو بْنُ يَحْيَى بْنِ الْحَارِثِ، قَالَ حَدَّثَنَا مَحْبُوبُ بْنُ مُوسَى، قَالَ حَدَّثَنَا أَبُو إِسْحَاقَ، - يَعْنِي الْفَزَارِيَّ - عَنْ سُهَيْلِ بْنِ أَبِي صَالِحٍ، عَنْ أَبِيهِ، عَنْ أَبِي هُرَيْرَةَ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم ‏ "‏ الْخَيْلُ مَعْقُودٌ فِي نَوَاصِيهَا الْخَيْرُ إِلَى يَوْمِ الْقِيَامَةِ الْخَيْلُ ثَلاَثَةٌ فَهِيَ لِرَجُلٍ أَجْرٌ وَهِيَ لِرَجُلٍ سَتْرٌ وَهِيَ عَلَى رَجُلٍ وِزْرٌ فَأَمَّا الَّذِي هِيَ لَهُ أَجْرٌ فَالَّذِي يَحْتَبِسُهَا فِي سَبِيلِ اللَّهِ فَيَتَّخِذُهَا لَهُ وَلاَ تُغَيِّبُ فِي بُطُونِهَا شَيْئًا إِلاَّ كُتِبَ لَهُ بِكُلِّ شَىْءٍ غَيَّبَتْ فِي بُطُونِهَا أَجْرٌ وَلَوْ عَرَضَتْ لَهُ مَرْجٌ ‏"‏ ‏.‏ وَسَاقَ الْحَدِيثَ ‏.‏

It was narrated that Abu Hurairah said:"The Messenger of Allah said: 'There is goodness tied to the forelocks of horses until the Day of Resurrection. And horses are of three types: Those that bring reward to man, those that are a means of protection for a man, and those that are a burden (of sin) for a man. As for those that bring reward, they are kept for the cause of Allah and for Jihad. No fodder enters their stomach but for everything that enters their stomachs, reward is written for him, even if he puts them out to pasture.'" And he quoted the Hadith

حَدَّثَنَا نَصْرُ بْنُ عَلِيٍّ الْجَهْضَمِيُّ، حَدَّثَنَا الْمُعْتَمِرُ بْنُ سُلَيْمَانَ، عَنْ أَبِيهِ، عَنْ أَبِي إِسْحَاقَ، عَنِ الْبَرَاءِ بْنِ عَازِبٍ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ ‏"‏ ائْتُونِي بِالْكَتِفِ أَوِ اللَّوْحِ ‏"‏ ‏.‏ فَكَتَبَ ‏:‏ ‏(‏ لاَ يَسْتَوِي الْقَاعِدُونَ مِنَ الْمُؤْمِنِينَ ‏)‏ وَعَمْرُو بْنُ أُمِّ مَكْتُومٍ خَلْفَ ظَهْرِهِ فَقَالَ هَلْ لِي مِنْ رُخْصَةٍ فَنَزَلَتْ ‏:‏ ‏(‏ غَيْرُ أُولِي الضَّرَرِ ‏)‏ ‏.‏ وَفِي الْبَابِ عَنِ ابْنِ عَبَّاسٍ وَجَابِرٍ وَزَيْدِ بْنِ ثَابِتٍ ‏.‏ وَهَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ وَهُوَ حَدِيثٌ غَرِيبٌ مِنْ حَدِيثِ سُلَيْمَانَ التَّيْمِيِّ عَنْ أَبِي إِسْحَاقَ ‏.‏ وَقَدْ رَوَى شُعْبَةُ وَالثَّوْرِيُّ عَنْ أَبِي إِسْحَاقَ هَذَا الْحَدِيثَ ‏

Narrated Al-Bara' bin 'Azib: That the Messenger of Allah (ﷺ) said: "Bring me a shoulder blade or tablet." Then he wrote: Not equal are those of believers who sit. 'Amr bin Umm Maktum who was behind him said: "Is there an exemption for me?" So the following was revealed: Except those who are disabled. There are narrations on this topic from Ibn 'Abbas, Jabir and Zaid bin Thabit. This Hadith is Hasan Sahih and it is a Hadith that is Gharib from the narration of Sulaiman At-Taimi from Abu Ishaq. And Shu'bah and Ath-Thawri reported this Hadith from Abu Ishaq

حَدَّثَنَا مُحَمَّدُ بْنُ بَشَّارٍ، حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ، عَنْ سُفْيَانَ، وَشُعْبَةَ، عَنْ حَبِيبِ بْنِ أَبِي ثَابِتٍ، عَنْ أَبِي الْعَبَّاسِ، عَنْ عَبْدِ اللَّهِ بْنِ عَمْرٍو، قَالَ جَاءَ رَجُلٌ إِلَى النَّبِيِّ صلى الله عليه وسلم يَسْتَأْذِنُهُ فِي الْجِهَادِ فَقَالَ ‏"‏ أَلَكَ وَالِدَانِ ‏"‏ ‏.‏ قَالَ نَعَمْ ‏.‏ قَالَ ‏"‏ فَفِيهِمَا فَجَاهِدْ ‏"‏ ‏.‏ قَالَ أَبُو عِيسَى وَفِي الْبَابِ عَنِ ابْنِ عَبَّاسٍ ‏.‏ وَهَذَا حَدِيثٌ حَسَنٌ صَحِيحٌ ‏.‏ وَأَبُو الْعَبَّاسِ هُوَ الشَّاعِرُ الأَعْمَى الْمَكِّيُّ وَاسْمُهُ السَّائِبُ بْنُ فَرُّوخَ ‏.‏

Narrated 'Abdullah bin 'Umar: A man came to Prophet (ﷺ) seeking permission to go for Jihad. So he said: 'Do you have parents (living)? ' He said: 'Yes.' He said: 'Then it is for them that you should perform Jihad.'" [Abu 'Eisa said:] There is something on this topic from Ibn 'Abbas. This Hadith is Hasan Sahih. (One of the narrators) Abul-Abbas is the blind (Al-A'ma) poet (Ash-Sha'ir), from Makkah, and his name is As-Sa'ab bin Farrukh

وصفات الفعل والقدرة والتفرد بالضر والنفع والعطاء والمنع ونفوذ المشيئة وكمال القوة وتدبير أمر الخليقة أخص باسم الرب

فمنشأ الغلط التسوية بين المشيئة والمحبة واعتقادهم وجوب الرضا بالقضاء ونحن نبين ما في الفصلين إن شاء الله تعالى فإن القوة لله جميعا

المثال الأول أن نقول مثل نفس الإنسان في بدنه أعني بالنفس اللطيفة المذكورة كمثل ملك في مدينته ومملكته فإن البدن مملكة النفس وعالمها ومستقرها ومدينتها وجوارحها وقواها بمنزلة الصناع والعملة والقوة العقلية المفكرة له كالمشير الناصح والوزير العاقل

1332 وعن أبي حماد ويقال أبو سعاد ويقال أبو أسد ويقال أبو عامر ويقال أبو عمرو ويقال أبو الأسود ويقال أبو عبس عقبة بن عامر الجهني رضي الله عنه قال سمعت رسول الله صلى الله عليه وسلم وهو على المنبر يقول وأعدوا لهم ما استطعتم من قوة ألا إن القوة الرمي ألا إن القوة الرمي ألا إن القوة الرمي رواه مسلم

السير في طلبها سير في أرض مسبعة والسباحة فيها سباحة في غدير التمساح المفروح به منها هو عين المحزون عليه آلامها متولدة من لذاتها واحزانها من أفراحها

فهذا وأمثاله من الأسباب مع الانهماك في الشهوات هو الذي سد على الخلق سبيل الاستضاءة بأنوار المعرفة والسباحة في بحارها الواسعة فالناس في طلبهم معرفة الله كالمدهوش الذى يضرب به المثل إذا كان راكبا لحماره وهو يطلب حماره والجليات إذا صارت مطلوبة صارت معتاصة

Lack of exercise is a major cause of chronic diseases.: Chronic diseases are major killers in the modern era. Physical inactivity is a primary cause of most chronic diseases. The initial third of the article considers: activity and prevention definitions; historical evidence showing physical inactivity is detrimental to health and normal organ functional capacities; cause versus treatment; physical activity and inactivity mechanisms differ; gene-environment interaction (including aerobic training adaptations, personalized medicine, and co-twin physic

High-Intensity Interval Training and Isocaloric Moderate-Intensity Continuous Training Result in Similar Improvements in Body Composition and Fitness in Obese Individuals.: This study aimed to determine the effects of 12 weeks of isocaloric programs of high-intensity intermittent training (HIIT) or moderate-intensity continuous training (MICT) or a short-duration HIIT (1/2HIIT) inducing only half the energy deficit on a cycle ergometer, on body weight and composition, cardiovascular fitness, resting metabolism rate (RMR), respiratory exchange ratio (RER), nonexercise physical activity (PA) levels and fasting and postprandial insulin response in sedentary obese indi

Web-based intervention to promote physical activity by sedentary older adults: randomized controlled trial.: Background: Physical activity (PA) for older adults has well-documented physical and cognitive benefits, but most seniors do not meet recommended guidelines for PA, and interventions are lacking. Objectives: This study evaluated the efficacy of a 12-week Internet intervention to help sedentary older adults over 55 years of age adopt and maintain an exercise regimen. Methods: A total of 368 sedentary men and women (M=60.3; SD 4.9) were recruited, screened, and assessed online. They were randomize

Effect of exercise referral schemes in primary care on physical activity and improving health outcomes: systematic review and meta-analysis.: Objective: To assess the impact of exercise referral schemes on physical activity and health outcomes. Design Systematic review and meta-analysis. Data sources: Medline, Embase, PsycINFO, Cochrane Library, ISI Web of Science, SPORTDiscus, and ongoing trial registries up to October 2009. We also checked study references. Study selection Design: randomised controlled trials or non-randomised controlled (cluster or individual) studies published in peer review journals. Population: sedentary individ

Physical activity patterns among South-Asian adults: a systematic review.: Physical activity (PA) has many beneficial physical and mental health effects. Physical inactivity is considered the fourth leading risk factor for global mortality. At present there are no systematic reviews on PA patterns among South Asian adults residing in the region. The present study aims to systematically evaluate studies on PA patterns in South Asian countries. A five-staged comprehensive search of the literature was conducted in Medline, Web of Science and SciVerse Scopus using keywords

Reducing the decline in physical activity during pregnancy: a systematic review of behaviour change interventions.: Purpose: Physical activity (PA) typically declines throughout pregnancy. Low levels of PA are associated with excessive weight gain and subsequently increase risk of pre-eclampsia, gestational diabetes mellitus, hypertension disorders, delivery by caesarean section and stillbirth. Systematic reviews on PA during pregnancy have not explored the efficacy of behaviour change techniques or related theory in altering PA behaviour. This systematic review evaluated the content of PA interventions to re

Stimulus-dependent changes of extracellular glucose in the rat hippocampus determined by in vivo microdialysis.

Neuronal activity is tightly coupled with brain energy metabolism; and glucose is an important energy substrate for neurons. The present in vivo microdialysis study was aimed at investigating changes in extracellular glucose concentrations in the rat ventral hippocampus due to exposure to the elevated plus maze. Determination of basal hippocampal glucose and lactate/pyruvate ratio in male Wistar rats was conducted in the home cage using in vivo microdialysis. Rats were exposed to the elevated plus maze, a rodent model of anxiety-related behaviour, or to unspecific stress induced by white noise (95dB) as a control condition. Basal hippocampal levels of glucose, as determined by zero-net-flux, and the basal lactate/pyruvate ratio were 1.49+/-0.05mmol/l and 13.8+/-1.1, respectively. In rats without manipulation, glucose levels remained constant throughout the experiment (120min). By contras…

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Lipopolysaccharide-induced depressive-like behavior is mediated by indoleamine 2,3-dioxygenase activation in mice.

Although elevated activity of the tryptophan-degrading enzyme indoleamine 2,3-dioxygenase (IDO) has been proposed to mediate comorbid depression in inflammatory disorders, its causative role has never been tested. We report that peripheral administration of lipopolysaccharide (LPS) activates IDO and culminates in a distinct depressive-like behavioral syndrome, measured by increased duration of immobility in both the forced-swim and tail suspension tests. Blockade of IDO activation either indirectly with the anti-inflammatory tetracycline derivative minocycline, that attenuates LPS-induced expression of proinflammatory cytokines, or directly with the IDO antagonist 1-methyltryptophan (1-MT), prevents development of depressive-like behavior. Both minocycline and 1-MT normalize the kynurenine/tryptophan ratio in the plasma and brain of LPS-treated mice without changing the LPS-induced incre…

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Human reinforcement learning subdivides structured action spaces by learning effector-specific values.

Humans and animals are endowed with a large number of effectors. Although this enables great behavioral flexibility, it presents an equally formidable reinforcement learning problem of discovering which actions are most valuable because of the high dimensionality of the action space. An unresolved question is how neural systems for reinforcement learning-such as prediction error signals for action valuation associated with dopamine and the striatum-can cope with this "curse of dimensionality." We propose a reinforcement learning framework that allows for learned action valuations to be decomposed into effector-specific components when appropriate to a task, and test it by studying to what extent human behavior and blood oxygen level-dependent (BOLD) activity can exploit such a decomposition in a multieffector choice task. Subjects made simultaneous decisions with their left and right han…

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Cold exposure and sleep in the rat: REM sleep homeostasis and body size.

Study objectives: Exposure to low ambient temperature (Ta) depresses REM sleep (REMS) occurrence. In this study, both short and long-term homeostatic aspects of REMS regulation were analyzed during cold exposure and during subsequent recovery at Ta 24 degrees C. Design: EEG activity, hypothalamic temperature, and motor activity were studied during a 24-h exposure to Tas ranging from 10 degrees C to -10 degrees C and for 4 days during recovery. Setting: Laboratory of Physiological Regulation during the Wake-Sleep Cycle, Department of Human and General Physiology, Alma Mater Studiorum-University of Bologna. Subjects: 24 male albino rats. Interventions: Animals were implanted with electrodes for EEG recording and a thermistor to measure hypothalamic temperature. Measurements and results: REMS occurrence decreased proportionally with cold exposure, but a fast compensatory REMS rebound occurr…

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Navigation skill impairment: Another dimension of the driving difficulties in minimal hepatic encephalopathy.

Unlabelled: Patients with minimal hepatic encephalopathy (MHE) have attention, response inhibition, and working memory difficulties that are associated with driving impairment and high motor vehicle accident risk. Navigation is a complex system needed for safe driving that requires functioning working memory and other domains adversely affected by MHE. The aim of this study was to determine the effect of MHE on navigation skills and correlate them with psychometric impairment. Forty-nine nonalcoholic patients with cirrhosis (34 MHE+, 15 MHE-; divided on the basis of a battery of block design, digit symbol, and number connection test A) and 48 age/education-matched controls were included. All patients underwent the psychometric battery and inhibitory control test (ICT) (a test of response inhibition) and driving simulation. Driving simulation consisted of 4 parts: (1) training; (2) drivin…

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Induction of c-Fos and DeltaFosB immunoreactivity in rat brain by Vagal nerve stimulation.

Vagus nerve stimulation (VNS) is used as therapy for treatment-resistant depression or epilepsy. This study used immunohistochemistry for biomarkers of short-term (c-Fos) and long-term (DeltaFosB) neuronal activation to map regions in brain that are activated by acute (2 h) or chronic (3 weeks) VNS in conscious Sprague-Dawley rats. Electrodes (Cyberonics Inc.) were implanted on the left vagus nerve and 1 week after surgery, stimulation began using parameters employed clinically (one burst of 20 Hz, 250 micros pulse width, 0.25 mA stimulation for 30 s every 5 min). Radio telemetry transmitters were used for monitoring blood pressure, heart rate, activity, and respiratory rate during VNS; neither acute nor chronic VNS significantly affected these parameters. Acute VNS significantly increased c-Fos staining in the nucleus of the solitary tract, paraventricular nucleus of the hypothalamus, p…

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Drug-dependent requirement of hippocampal neurogenesis in a model of depression and of antidepressant reversal.

Background: Depression and anxiety disorders have been linked to dysfunction of the hypothalamo-pituitary-adrenal (HPA) axis and structural changes within the hippocampus. Unpredictable chronic mild stress (UCMS) can recapitulate these effects in a mouse model, and UCMS-induced changes, including downregulation of hippocampal neurogenesis, can be reversed by antidepressant (AD) treatment. We investigated causality between changes in hippocampal neurogenesis and the effects of both chronic stress and chronic ADs. Methods: Mice were treated with either a sham procedure or focal hippocampal irradiation to disrupt cell proliferation before being confronted with 5 weeks of UCMS. From the third week onward, we administered monoaminergic ADs (imipramine, fluoxetine), the corticotropin-releasing factor 1 (CRF(1)) antagonist SSR125543, or the vasopressin 1b (V(1b)) antagonist SSR149415 daily. The…

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Worry facilitates corticospinal motor response to transcranial magnetic stimulation.

Like other forms of emotion, anxiety has been theoretically linked to preparation for action. Worry is a type of anticipatory anxiety and the hallmark of generalized anxiety disorder. Research has shown that worry is associated with vigilance to threat cues and increased muscle tension, which may in part be explained by motor facilitation that accompanies preparation for action. This study assessed corticospinal motor responses during worry using transcranial magnetic stimulation (TMS). Participants received TMS during a worry induction, during motor imagery, and during mental arithmetic, while electromyography and force were measured. TMS over the primary motor cortex elicited larger corticospinal motor responses during worry than mental arithmetic and smaller responses than motor imagery of maximum voluntary contraction of targeted muscles. These findings suggest that the association b…

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Lameness, activity time-budgets, and estrus expression in dairy cattle.

The aim of the present study was to identify specific behavioral patterns that contribute to diminished estrus expression in lame cows. Behavioral scan and focal sampling were used to examine the effect of lameness on daily activity budgets, sexual behavior, feeding activities, and body condition score. A total of 59 milking cows (51.8 +/- 1.4 d postpartum) were monitored on a commercial dairy farm for 5 d following estrus synchronization. Overall, lame cows (n = 39) spent proportionately less time elevated on their feet and more time lying down compared with nonlame cows (n = 20). This included lame cows spending less time walking or standing. Overall, the total proportion of scans in which an estrous behavior was observed was very small but tended to be smaller for lame compared with nonlame cows. Throughout a day, lame cows displayed a lower proportion of estrous behaviors in the earl…

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IL-6 mediated alterations on immobile behavior of rats in the forced swim test via ERK1/2 activation in specific brain regions.

Interleukin-6 (IL-6), a proinflammatory cytokine, is well known as a mediator in early stage inflammatory immune reactions. In recent years, accumulating evidence has shown that IL-6 is concomitant with the occurrence of major depression. However, the identification of the role of IL-6, as either an illness causation or immunotherapy in depression, remains to be further established. In the present study, 5-week old male Sprague-Dawley (SD) rats were used along with the forced swim test (FST) and pharmacological techniques. The data show that rats subjected to 3-day intra-amygdala or intra-hippocampus, but not intra-frontal cortex, IL-6 treatments manifested a significant increase in the immobility time (IMT) in the FST. In addition, there was no obvious difference in body temperature between normal and 3-day IL-6 treated rats. Conversely, the rats receiving 3-day intra-amygdala or intra-…

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A phosphatase cascade by which rewarding stimuli control nucleosomal response.

Dopamine orchestrates motor behaviour and reward-driven learning. Perturbations of dopamine signalling have been implicated in several neurological and psychiatric disorders, and in drug addiction. The actions of dopamine are mediated in part by the regulation of gene expression in the striatum, through mechanisms that are not fully understood. Here we show that drugs of abuse, as well as food reinforcement learning, promote the nuclear accumulation of 32-kDa dopamine-regulated and cyclic-AMP-regulated phosphoprotein (DARPP-32). This accumulation is mediated through a signalling cascade involving dopamine D1 receptors, cAMP-dependent activation of protein phosphatase-2A, dephosphorylation of DARPP-32 at Ser 97 and inhibition of its nuclear export. The nuclear accumulation of DARPP-32, a potent inhibitor of protein phosphatase-1, increases the phosphorylation of histone H3, an important c…

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Theta and gamma coordination of hippocampal networks during waking and rapid eye movement sleep.

Rapid eye movement (REM) sleep has been considered a paradoxical state because, despite the high behavioral threshold to arousing perturbations, gross physiological patterns in the forebrain resemble those of waking states. To understand how intrahippocampal networks interact during REM sleep, we used 96 site silicon probes to record from different hippocampal subregions and compared the patterns of activity during waking exploration and REM sleep. Dentate/CA3 theta and gamma synchrony was significantly higher during REM sleep compared with active waking. In contrast, gamma power in CA1 and CA3-CA1 gamma coherence showed significant decreases in REM sleep. Changes in unit firing rhythmicity and unit-field coherence specified the local generation of these patterns. Although these patterns of hippocampal network coordination characterized the more common tonic periods of REM sleep (approxi…

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Nitric oxide involvement in the antidepressant-like effects of acute lithium administration in the mouse forced swimming test.

In the present study we evaluated the involvement of l-arginine/nitric oxide (NO)/cGMP pathway in the antidepressant-like effects of acute lithium administration in the mouse forced swimming test (FST). Lithium, at 30 and 100 mg/kg, significantly reduced the immobility times of mice in the FST, whereas at lower doses (0.5, 5 and 10 mg/kg) had no effect on the immobility time. The NO synthase (NOS) inhibitor N(G)-nitro-L-arginine methyl ester (L-NAME), at 10 and 30 mg/kg, and the selective neuronal NOS inhibitor N(omega)-propyl-L-arginine (L-NPA), at 5 and 15 mg/kg, had no significant effects on the FST, whereas they significantly decreased the immobility time at 100 and 30 mg/kg, respectively. Combination of non-effective dose of lithium (10 mg/kg) with low doses of L-NAME (30 mg/kg) or L-NPA (15 mg/kg) significantly reduced the immobility times in the FST. Moreover, the guanylyl cyclase…

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The mGlu2 but not the mGlu3 receptor mediates the actions of the mGluR2/3 agonist, LY379268, in mouse models predictive of antipsychotic activity.

Rationale: Group II metabotropic glutamate receptors (mGluRs) comprise the mGluR2 and mGluR3 subtypes, the activation and modulation of which has been suggested to be beneficial for treating schizophrenia. Genetic association studies suggest limited association between mGluR2 and schizophrenia but some association between mGluR3 and schizophrenia. Conversely, pre-clinical studies suggest that mGluR2 may be responsible for mediating the antipsychotic activity of mGluR2/3 agonists, although to date, the role of mGluR3 has not been specifically assessed. Objectives: The aim of this study is to use recently generated mGluR3 and mGluR2 knockout mice to investigate which of the group II mGluRs mediates the actions of the mGluR2/3 agonist, LY379268, in two mouse models predictive of antipsychotic activity. Materials and methods: LY379268 (0.3-10 mg/kg SC), phencyclidine (PCP; 1-5 mg/kg IP), and…

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Circadian rhythm disorganization produces profound cardiovascular and renal disease in hamsters.

Sleep deprivation, shift work, and jet lag all disrupt normal biological rhythms and have major impacts on health; however, circadian disorganization has never been shown as a causal risk factor in organ disease. We now demonstrate devastating effects of rhythm disorganization on cardiovascular and renal integrity and that interventions based on circadian principles prevent disease pathology caused by a short-period mutation (tau) of the circadian system in hamsters. The point mutation in the circadian regulatory gene, casein kinase-1epsilon, produces early onset circadian entrainment with fragmented patterns of behavior in +/tau heterozygotes. Animals die at a younger age with cardiomyopathy, extensive fibrosis, and severely impaired contractility; they also have severe renal disease with proteinuria, tubular dilation, and cellular apoptosis. On light cycles appropriate for their genoty…

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Subjective and objective napping and sleep in older adults: are evening naps "bad" for nighttime sleep?

Objectives: To compare objective and subjective measurements of napping and to examine the relationship between evening napping and nocturnal sleep in older adults. Design: For 12 days, participants wore actigraphs and completed sleep diaries. Setting: Community. Participants: One hundred individuals who napped, aged 60 to 89 (including good and poor sleepers with typical age-related medical comorbidities). Measurements: Twelve days of sleep diary and actigraphy provided subjective and objective napping and sleep data. Results: Evening naps (within 2 hours of bedtime) were characteristic of the sample, with peak nap time occurring between 20:30 and 21:00 (average nap time occurred between 14:30 and 15:00). Two categories of nappers were identified: those who took daytime and evening naps and daytime-only. No participants napped during the evening only. Day-and-evening nappers significant…

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CB1 receptor stimulation in specific brain areas differently modulate anxiety-related behaviour.

There is a general consensus that the effects of cannabinoid agonists on anxiety seem to be biphasic, with low doses being anxiolytic and high doses ineffective or possibly anxiogenic. Besides the behavioural effects of cannabinoids on anxiety, very few papers have dealt with the neuroanatomical sites of these effects. We investigated the effect on rat anxiety behavior of local administration of THC in the prefrontal cortex, basolateral amygdala and ventral hippocampus, brain regions belonging to the emotional circuit and containing high levels of CB1 receptors. THC microinjected at low doses in the prefrontal cortex (10 microg) and ventral hippocampus (5 microg) induced in rats an anxiolytic-like response tested in the elevated plus-maze, whilst higher doses lost the anxiolytic effect and even seemed to switch into an anxiogenic profile. Low THC doses (1 microg) in the basolateral amygd…

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Differential effect of environment enrichment and social isolation on depressive-like behavior, spontaneous activity and serotonin and norepinephrine concentration in prefrontal cortex and ventral striatum.

In order to determine the effect of postnatal environments on some behavioral and neurochemical depressive-like parameters, male Sprague-Dawley rats were reared from weaning in either social isolation, standard laboratory conditions, or environmental enrichment. Open-field activity was assessed at postnatal days 37, 65, 93 and 107 and 1 h before the last open-field test, a forced-swimming test was carried out. After behavioral tests, the monoamines concentrations were analyzed in prefrontal cortex and ventral striatum. Relative to control and isolation rearing, the environmental enrichment reduced open-field activity, led to antidepressive-like effects and increased serotonin concentrations in the prefrontal cortex. Social isolation, on the other hand, did not affect open-field activity, but increased depressive-like behavior and reduced the amount of norepinephrine in the ventral striat…

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The up- and down-regulation of amusement: experiential, behavioral, and autonomic consequences.

A growing body of research has examined the regulation of negative emotions. However, little is known about the physiological processes underlying the regulation of positive emotions, such as when amusement is enhanced during periods of stress or attenuated in the pursuit of social goals. The aim of this study was to examine the psychophysiological consequences of the cognitive up- and down-regulation of amusement. To address this goal, participants viewed brief, amusing film clips while measurements of experience, behavior, and peripheral physiology were collected. Using an event-related design, participants viewed each film under the instructions either to (a) watch, (b) use cognitive reappraisal to increase amusement, or (c) use cognitive reappraisal to decrease amusement. Findings indicated that emotion experience, emotion-expressive behavior, and autonomic physiology (including hear…

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Effects of environmental enrichment on exploration, anxiety, and memory in female TgCRND8 Alzheimer mice.

After we could recently demonstrate a beneficial effect of environmental enrichment on AD-like brain pathology in female TgCRND8 mice [Ambrée O, Leimer U, Herring A, Görtz N, Sachser N, Heneka MT, et al. Reduction of amyloid angiopathy and Abeta plaque burden after enriched housing in TgCRND8 mice: involvement of multiple pathways. Am J Pathol 2006;169:544-52] the present study focuses on the behavioural effects of environmental enrichment with special emphasis on learning and memory performance in this AD model. In the first experiment spontaneous exploration, locomotor activity and anxiety-related behaviour were assessed as the performance in learning tasks can be biased substantially by exploratory behavioural traits. In the second experiment spatial memory in the Barnes maze test and object recognition memory were examined. Regarding exploratory behaviour transgenic mice from standar…

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Attenuation of estrous cycle-dependent marble burying in female rats by acute treatment with progesterone and antidepressants.

Premenstrual dysphoric disorder (PMDD) is characterized by the recurrence of a cluster of physical and negative mood symptoms, especially irritability, appearing when estrogen and progesterone levels decrease during the late luteal phase of the menstrual cycle. The aim of the present study was to explore a new potential model of premenstrual irritability. It has been suggested that burying of harmless objects by rodents may reflect a form of impulsive or anxiety-like behavior. This study demonstrates changes in burying behavior during various phases of the estrous cycle in some but not all female rats. Burying behavior was found to be enhanced at metestrus and decreased at proestrus, characterized by low and high ovarian hormone levels, respectively. No habituation of the cycle-dependent burying was observed. Enhanced burying was not observed in reproductive senescent and ovariectomized …

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Factors underlying tiredness in older adults.

Background and aims: The purpose of the present study was to examine for factors related to tiredness, cross-sectionally at the age of 75 years, and factors related to subsequent onset of tiredness, from age 75 to 80 in a non-disabled community-living population. Methods: The study is part of the prospective Nordic Research on Aging Study (NORA) on the 1914 cohort in Jyväskylä, Finland and Glostrup, Denmark. In total, 546 non-disabled older men and women participated in the cross-sectional study at age 75, and 299 persons without tiredness and disability at baseline took part in the follow-up study, from age 75 to 80. Tiredness was measured by a validated scale based on the following items: using the toilet, washing and dressing lower body, and cutting toenails. Independent variables were: social position measured by housing tenure and income, chronic diseases, use of medicine, pain, mus…

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Daytime naps, motor memory consolidation and regionally specific sleep spindles.

Background: Increasing evidence demonstrates that motor-skill memories improve across a night of sleep, and that non-rapid eye movement (NREM) sleep commonly plays a role in orchestrating these consolidation enhancements. Here we show the benefit of a daytime nap on motor memory consolidation and its relationship not simply with global sleep-stage measures, but unique characteristics of sleep spindles at regionally specific locations; mapping to the corresponding memory representation. Methodology/principal findings: Two groups of subjects trained on a motor-skill task using their left hand - a paradigm known to result in overnight plastic changes in the contralateral, right motor cortex. Both groups trained in the morning and were tested 8 hr later, with one group obtaining a 60-90 minute intervening midday nap, while the other group remained awake. At testing, subjects that did not nap…

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Cognitive impairment associated to HPA axis hyperactivity after maternal separation in rats.

Exposure to early stressful adverse life events may increase vulnerability to psychopathology in adult life. There are important memory disturbances in stress-related psychiatric disorders. Therefore, there is much interest in understanding the mechanisms responsible for interactions between stress and cognition. Male Wistar rats that experienced 3-h daily separations from the dam during the first 3 weeks of life (maternal separation, MS) showed in adulthood a depressive-like behaviour in the forced swimming test, increased hypothalamic-pituitary-adrenal (HPA) axis responsiveness to stressors and elevated CRF mRNA in the paraventricular nucleus of the hypothalamus (PVN). In the hippocampus of MS rats, there was a lower glucocorticoid receptor density. MS produced significant learning impairments both in the Morris water maze and in the novel object recognition test (NORT). The glucocorti…

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CD38 is critical for social behaviour by regulating oxytocin secretion.

CD38, a transmembrane glycoprotein with ADP-ribosyl cyclase activity, catalyses the formation of Ca2+ signalling molecules, but its role in the neuroendocrine system is unknown. Here we show that adult CD38 knockout (CD38-/-) female and male mice show marked defects in maternal nurturing and social behaviour, respectively, with higher locomotor activity. Consistently, the plasma level of oxytocin (OT), but not vasopressin, was strongly decreased in CD38-/- mice. Replacement of OT by subcutaneous injection or lentiviral-vector-mediated delivery of human CD38 in the hypothalamus rescued social memory and maternal care in CD38-/- mice. Depolarization-induced OT secretion and Ca2+ elevation in oxytocinergic neurohypophysial axon terminals were disrupted in CD38-/- mice; this was mimicked by CD38 metabolite antagonists in CD38+/+ mice. These results reveal that CD38 has a key role in neuropep…

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