Claudia Giannetto, Francesca Arfuso, Maria Rizzo, Elisabetta Giudice, Fabrizio Calapai, Annalisa Guercio, Giusi Macaluso, Ilenia Giacchino, Giuseppe Piccione, Vincenza Cannella
{"title":"在不同光周期条件下饲养的狗外周血中时钟基因表达的持续性。","authors":"Claudia Giannetto, Francesca Arfuso, Maria Rizzo, Elisabetta Giudice, Fabrizio Calapai, Annalisa Guercio, Giusi Macaluso, Ilenia Giacchino, Giuseppe Piccione, Vincenza Cannella","doi":"10.1080/07420528.2024.2315217","DOIUrl":null,"url":null,"abstract":"<p><p>Dogs are the common pets adopted by humans, and their circadian behavior and physiology are influenced by human habits. In many families, there is a change of lifestyle with respect to the natural daylight (NDL) cycle. Exposure to constant light disrupts some central and peripheral circadian rhythms. The aim of the present study was to improve the knowledge about the circadian changes of clock components in the peripheral blood in dogs housed under NDL and constant light (LL) conditions. Blood samples were collected on five female Beagle dogs (2 years old, 14 ± 0.5 kg) every 4 hours for a 24-hour period during an NDL (Sunrise 05:05 h - Sunset 20:55 h) and 24-hour period of constant light (LL). Blood samples were stored in a PAX gene Blood RNA Tube, real-time RT-quantitative polymerase chain reaction was performed to determine <i>Clock, Per1-3, and Cry1-2</i> gene expression. During the NDL, all genes investigated showed robust diurnal daily rhythmicity. During the constant light, only <i>Clock</i> maintained its daily rhythmicity. <i>Clock</i> acrophase was observed close to sunrise (ZT 0) and was statistically different from the other clock genes except for <i>Per3</i>. <i>Per3</i> daily oscillations were not statistically significant. No differences were observed among the clock genes tested in the amplitude and robustness values. Our results can be considered preliminary data to provide new insights into the adaptation mechanism of the canine peripheral circadian clock. The persistence of <i>Clock</i> gene expression during the LL indicated the presence of an endogenously generated signal in blood. Because peripheral blood is an easily accessible sample in dogs, the analysis of clock gene expression in this tissue could be useful to investigate the adaptive capacity of this species housed in different environmental conditions linked to the owner's lifestyle.</p>","PeriodicalId":10294,"journal":{"name":"Chronobiology International","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Persistence of <i>clock</i> gene expression in peripheral blood in dogs maintained under different photoperiod schedules.\",\"authors\":\"Claudia Giannetto, Francesca Arfuso, Maria Rizzo, Elisabetta Giudice, Fabrizio Calapai, Annalisa Guercio, Giusi Macaluso, Ilenia Giacchino, Giuseppe Piccione, Vincenza Cannella\",\"doi\":\"10.1080/07420528.2024.2315217\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><p>Dogs are the common pets adopted by humans, and their circadian behavior and physiology are influenced by human habits. In many families, there is a change of lifestyle with respect to the natural daylight (NDL) cycle. Exposure to constant light disrupts some central and peripheral circadian rhythms. The aim of the present study was to improve the knowledge about the circadian changes of clock components in the peripheral blood in dogs housed under NDL and constant light (LL) conditions. Blood samples were collected on five female Beagle dogs (2 years old, 14 ± 0.5 kg) every 4 hours for a 24-hour period during an NDL (Sunrise 05:05 h - Sunset 20:55 h) and 24-hour period of constant light (LL). Blood samples were stored in a PAX gene Blood RNA Tube, real-time RT-quantitative polymerase chain reaction was performed to determine <i>Clock, Per1-3, and Cry1-2</i> gene expression. During the NDL, all genes investigated showed robust diurnal daily rhythmicity. During the constant light, only <i>Clock</i> maintained its daily rhythmicity. <i>Clock</i> acrophase was observed close to sunrise (ZT 0) and was statistically different from the other clock genes except for <i>Per3</i>. <i>Per3</i> daily oscillations were not statistically significant. No differences were observed among the clock genes tested in the amplitude and robustness values. Our results can be considered preliminary data to provide new insights into the adaptation mechanism of the canine peripheral circadian clock. The persistence of <i>Clock</i> gene expression during the LL indicated the presence of an endogenously generated signal in blood. Because peripheral blood is an easily accessible sample in dogs, the analysis of clock gene expression in this tissue could be useful to investigate the adaptive capacity of this species housed in different environmental conditions linked to the owner's lifestyle.</p>\",\"PeriodicalId\":10294,\"journal\":{\"name\":\"Chronobiology International\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":2.2000,\"publicationDate\":\"2024-03-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Chronobiology International\",\"FirstCategoryId\":\"3\",\"ListUrlMain\":\"https://doi.org/10.1080/07420528.2024.2315217\",\"RegionNum\":4,\"RegionCategory\":\"医学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"2024/2/7 0:00:00\",\"PubModel\":\"Epub\",\"JCR\":\"Q2\",\"JCRName\":\"BIOLOGY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chronobiology International","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1080/07420528.2024.2315217","RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/2/7 0:00:00","PubModel":"Epub","JCR":"Q2","JCRName":"BIOLOGY","Score":null,"Total":0}
Persistence of clock gene expression in peripheral blood in dogs maintained under different photoperiod schedules.
Dogs are the common pets adopted by humans, and their circadian behavior and physiology are influenced by human habits. In many families, there is a change of lifestyle with respect to the natural daylight (NDL) cycle. Exposure to constant light disrupts some central and peripheral circadian rhythms. The aim of the present study was to improve the knowledge about the circadian changes of clock components in the peripheral blood in dogs housed under NDL and constant light (LL) conditions. Blood samples were collected on five female Beagle dogs (2 years old, 14 ± 0.5 kg) every 4 hours for a 24-hour period during an NDL (Sunrise 05:05 h - Sunset 20:55 h) and 24-hour period of constant light (LL). Blood samples were stored in a PAX gene Blood RNA Tube, real-time RT-quantitative polymerase chain reaction was performed to determine Clock, Per1-3, and Cry1-2 gene expression. During the NDL, all genes investigated showed robust diurnal daily rhythmicity. During the constant light, only Clock maintained its daily rhythmicity. Clock acrophase was observed close to sunrise (ZT 0) and was statistically different from the other clock genes except for Per3. Per3 daily oscillations were not statistically significant. No differences were observed among the clock genes tested in the amplitude and robustness values. Our results can be considered preliminary data to provide new insights into the adaptation mechanism of the canine peripheral circadian clock. The persistence of Clock gene expression during the LL indicated the presence of an endogenously generated signal in blood. Because peripheral blood is an easily accessible sample in dogs, the analysis of clock gene expression in this tissue could be useful to investigate the adaptive capacity of this species housed in different environmental conditions linked to the owner's lifestyle.
期刊介绍:
Chronobiology International is the journal of biological and medical rhythm research. It is a transdisciplinary journal focusing on biological rhythm phenomena of all life forms. The journal publishes groundbreaking articles plus authoritative review papers, short communications of work in progress, case studies, and letters to the editor, for example, on genetic and molecular mechanisms of insect, animal and human biological timekeeping, including melatonin and pineal gland rhythms. It also publishes applied topics, for example, shiftwork, chronotypes, and associated personality traits; chronobiology and chronotherapy of sleep, cardiovascular, pulmonary, psychiatric, and other medical conditions. Articles in the journal pertain to basic and applied chronobiology, and to methods, statistics, and instrumentation for biological rhythm study.
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