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International journal of chronobiology最新文献

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Evidence for circadian rhythmicity in guanyl cyclase of the rat intestinal epithelial cell. 大鼠肠上皮细胞鸟苷环化酶昼夜节律性的证据。
International journal of chronobiology Pub Date : 1979-01-01
M O Pinkett, H Sitren, R Barge, N R Stevenson
{"title":"Evidence for circadian rhythmicity in guanyl cyclase of the rat intestinal epithelial cell.","authors":"M O Pinkett,&nbsp;H Sitren,&nbsp;R Barge,&nbsp;N R Stevenson","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The activity of the enzyme, guanyl cyclase, associated with the rat intestinal brush border membrane, has an endogenous circadian rhythm which is observed in the absence of oral intermittent feeding and of a dark period. This rhythm is cued by the feeding schedule but is essentially unaffected by a light-dark cycle.</p>","PeriodicalId":75936,"journal":{"name":"International journal of chronobiology","volume":"6 1","pages":"13-22"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11258195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Circadian periodicity of plasma prolactin in some neurological diseases. 一些神经系统疾病中血浆催乳素的昼夜周期性。
International journal of chronobiology Pub Date : 1979-01-01
E Ferrari, G Nappi, A Vailati, E Martignoni, P A Bossolo, A Polleri
{"title":"Circadian periodicity of plasma prolactin in some neurological diseases.","authors":"E Ferrari,&nbsp;G Nappi,&nbsp;A Vailati,&nbsp;E Martignoni,&nbsp;P A Bossolo,&nbsp;A Polleri","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The circadian rhythmicity of plasma PRL has been studied in some neurological diseases in which hypothalamic involvement or abnormalities of brain neurotransmitters has been postulated. 11 patients with Steinert's myotonic dystrophy, 7 with cluster headache and 10 with Huntington's chorea have been studied. By the mean cosinor procedure, a significant circadian rhythm of plasma PRL has been observed both in Steinert's disease and in cluster headache, whereas a circadian periodicity is not detectable in Huntington's chorea, a degenerative disorder affecting the basal ganglia, the hypothalamus and many other areas of the CNS.</p>","PeriodicalId":75936,"journal":{"name":"International journal of chronobiology","volume":"6 4","pages":"231-42"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11380917","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of ACTH on circadian periodicity of nuclear volume and mitotic division in the zona fasciculata externa of the adrenal cortex of mice. 促肾上腺皮质激素对小鼠肾上腺皮质外束带核体积昼夜周期及核分裂的影响。
International journal of chronobiology Pub Date : 1979-01-01
O I Kirillov, L A Kurilenko
{"title":"Effect of ACTH on circadian periodicity of nuclear volume and mitotic division in the zona fasciculata externa of the adrenal cortex of mice.","authors":"O I Kirillov,&nbsp;L A Kurilenko","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>In cells of the zona fasciculata externa of the adrenal cortex of mice, the maximal value of nuclear volume is observed in evening and night time, while the mitotic peak occurs in the early part of the day. Ten day subcutaneous injection of 1.5 units of ACTH twice in 24 hr produced nuclear hypertrophy and stimulation of mitotic activity of cells of the zona fasciculata externa. The circadian periodicity of nuclear volume in mice injected with ACTH is disturbed, while the circadian rhythm of mitotic activity is retained.</p>","PeriodicalId":75936,"journal":{"name":"International journal of chronobiology","volume":"6 1","pages":"51-5"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11435238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of photoperiod reversal on twenty-four hour patterns for dopamine levels in the corpus striatum and upper and lower brainstem of the rat. 光周期反转对大鼠纹状体及上下脑干24小时多巴胺水平的影响。
International journal of chronobiology Pub Date : 1979-01-01
A H Friedman, R W Piepho
{"title":"Effect of photoperiod reversal on twenty-four hour patterns for dopamine levels in the corpus striatum and upper and lower brainstem of the rat.","authors":"A H Friedman,&nbsp;R W Piepho","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Dopamine levels were measured in the corpus striatum, upper and lower brainstem at 6 hour intervals for a period of 24 hours in rats adapted for 3 weeks to either of two concomitantly-conducted lighting programs. On the normal cycle the animals were illuminated from 08(00)--20(00); on the reverse cycle, from 20(00)--08(00). In the corpus striatum dopamine levels peaked during the dark phase of both illumination cycles indicating that 24 hour rhythm is exogenous. On the other hand, in the upper and lower brainstem, dopamine peaks occurred in both light cycles at 00(00) or 06(00) indicating that these 24 hour rhythms are endogenous in nature. Photoperiod reversal resulted in significantly elevated dopamine levels in the corpus striatum and lower brainstem. The existence of a stress as well as a seasonal factor which affects striatal dopamine is suggested.</p>","PeriodicalId":75936,"journal":{"name":"International journal of chronobiology","volume":"6 1","pages":"57-65"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11643694","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Photoperiodic control of rat pineal serotonin N-acetyl-transferase activity. 光周期控制大鼠松果体5 -羟色胺n -乙酰转移酶活性。
International journal of chronobiology Pub Date : 1979-01-01
P K Rudeen, R J Reiter
{"title":"Photoperiodic control of rat pineal serotonin N-acetyl-transferase activity.","authors":"P K Rudeen,&nbsp;R J Reiter","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Adult male albino rats were acclimated to constant light (light:dark-LD-24:0) or to darkness interrupted with brief periods of light at 6 h intervals (LD 1/4:5 3/4 X 4) concurrently with rats maintained in a LD 14:10 photoperiodic cycle. The activity and rhythmicity of pineal serotonin N-acetyltransferase (NAT) was examined at regular intervals for 24 hours in rats maintained in the experimental photoperiods and compared to pineal NAT activity and rhythmicity in rats maintained in the LD 14:10 photoperiod. The results indicate that constant light is capable of depressing nocturnal levels of rat pineal NAT and obliterating the pineal NAT rhythm. Likewise, rats subjected to darkness interrupted with brief periods of light at 6 h intervals experienced a similar response in pineal NAT activity to animals subjected to constant light, i.e., pineal NAT activity was persistently low and the rhythmicity was obliterated. The results are discussed relative to the hypothesis that the pineal NAT activity responds to an endogenous rhythm in photoperiodic time measurement. The evidence herein suggests that the time of occurrence of environmental light in the photoperiod is more important in determining pineal NAT activity and/or rhythmicity than is the total amount of darkness or the dark to light ratio to which animals may be subjected.</p>","PeriodicalId":75936,"journal":{"name":"International journal of chronobiology","volume":"6 4","pages":"211-8"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11759858","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Diurnal rhythmicity of nuclear and cytoplasmic polyadenylylated ribonucleic acids and or polyadenylate-dependent polyadenylate polymerase in rat liver. 大鼠肝脏细胞核和细胞质聚腺苷酸核糖核酸和/或聚腺苷酸依赖的聚腺苷酸聚合酶的日节律性。
International journal of chronobiology Pub Date : 1979-01-01
G Geppinger, P Bröking, R Hardeland
{"title":"Diurnal rhythmicity of nuclear and cytoplasmic polyadenylylated ribonucleic acids and or polyadenylate-dependent polyadenylate polymerase in rat liver.","authors":"G Geppinger,&nbsp;P Bröking,&nbsp;R Hardeland","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The hepatic concentration of polyadenylylated RNA was measured in rats kept under LD 12:12. In the nuclei, the concentration was maximal during the dark phase, whereas in the cytoplasm, the highest values were measured during the light phase. The activity of nuclear polyadenylate-dependent polyadenylate polymerase showed a rhythm of low amplitude with a maximum at light-off.</p>","PeriodicalId":75936,"journal":{"name":"International journal of chronobiology","volume":"6 1","pages":"23-30"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11774600","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Forging chronobiology and pediatrics as well as geriatrics--a birthday greeting for Theodor Hellbrugge. 在时间生物学、儿科和老年医学方面取得了巨大成就——这是对西奥多·海尔布鲁日的生日祝福。
International journal of chronobiology Pub Date : 1979-01-01
E Halberg, F Halberg, J Halberg, F Halberg
{"title":"Forging chronobiology and pediatrics as well as geriatrics--a birthday greeting for Theodor Hellbrugge.","authors":"E Halberg,&nbsp;F Halberg,&nbsp;J Halberg,&nbsp;F Halberg","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75936,"journal":{"name":"International journal of chronobiology","volume":"6 3","pages":"135-43"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11607364","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Circadian rhythms in the mammalian central nervous system, blood pressure and parasites--hobbies of Rudolf Engel. 哺乳动物中枢神经系统的昼夜节律、血压和寄生虫——鲁道夫·恩格尔的爱好。
International journal of chronobiology Pub Date : 1979-01-01
F Halberg, E Halberg
{"title":"Circadian rhythms in the mammalian central nervous system, blood pressure and parasites--hobbies of Rudolf Engel.","authors":"F Halberg,&nbsp;E Halberg","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75936,"journal":{"name":"International journal of chronobiology","volume":"7 1","pages":"1-16"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11607365","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Circadian rhythms of renal function and electrolyte excretion in surgical hypopituitarism with observation of postural influence. 手术后垂体功能低下患者肾功能和电解质排泄的昼夜节律及体位影响的观察。
International journal of chronobiology Pub Date : 1979-01-01
L G Wesson, M L Simenhoff
{"title":"Circadian rhythms of renal function and electrolyte excretion in surgical hypopituitarism with observation of postural influence.","authors":"L G Wesson,&nbsp;M L Simenhoff","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75936,"journal":{"name":"International journal of chronobiology","volume":"6 1","pages":"31-7"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11643822","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chronobiology - 1979. 时间生物学——1979年。
International journal of chronobiology Pub Date : 1979-01-01
F Halberg, A Ahlgren
{"title":"Chronobiology - 1979.","authors":"F Halberg,&nbsp;A Ahlgren","doi":"","DOIUrl":"","url":null,"abstract":"","PeriodicalId":75936,"journal":{"name":"International journal of chronobiology","volume":"6 3","pages":"145-62"},"PeriodicalIF":0.0,"publicationDate":"1979-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"11759373","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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