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36 Results Found

  • Article
  • Open Access
3 Citations
3,182 Views
13 Pages

Unveiling Subtle Geographical Clines: Phenotypic Effects and Dynamics of Circadian Clock Gene Polymorphisms

  • Loren Khatib,
  • Bengisu Sezen Subasi,
  • Bettina Fishman,
  • Martin Kapun and
  • Eran Tauber

14 June 2023

Our understanding of the gene regulatory network that constitutes the circadian clock has greatly increased in recent decades, notably due to the use of Drosophila as a model system. In contrast, the analysis of natural genetic variation that enables...

  • Proceeding Paper
  • Open Access
1 Citations
2,206 Views
7 Pages

The Association of Cardiovascular Disease with the T3111C Polymorphism in the CLOCK Gene

  • Ivana Škrlec,
  • Jasminka Talapko,
  • Snježana Džijan and
  • Hrvoje Lepeduš

Background and Objectives: Cardiovascular diseases (CVDs) are among the leading causes of death worldwide, although CVD mortality has decreased in developed countries. Numerous pathophysiological processes lead to the development of CVDs. The circadi...

  • Systematic Review
  • Open Access
25 Citations
6,095 Views
14 Pages

The Association between Circadian Clock Gene Polymorphisms and Metabolic Syndrome: A Systematic Review and Meta-Analysis

  • Ivana Škrlec,
  • Jasminka Talapko,
  • Snježana Džijan,
  • Vera Cesar,
  • Nikolina Lazić and
  • Hrvoje Lepeduš

24 December 2021

Metabolic syndrome (MetS) is a combination of cardiovascular risk factors associated with type 2 diabetes, obesity, and cardiovascular diseases. The circadian clock gene polymorphisms are very likely to participate in metabolic syndrome genesis and d...

  • Article
  • Open Access
5 Citations
3,240 Views
10 Pages

Influence of DNA-Polymorphisms in Selected Circadian Clock Genes on Clock Gene Expression in Subjects from the General Population and Their Association with Sleep Duration

  • Rocío Barragán,
  • José V. Sorlí,
  • Oscar Coltell,
  • Inmaculada Gonzalez-Monje,
  • Rebeca Fernández-Carrión,
  • Laura V. Villamil,
  • Olga Portolés,
  • Dolores Corella,
  • Carolina Ortega-Azorín and
  • Eva M. Asensio

16 September 2022

Background and Objectives: Circadian rhythms have an important implication in numerous physiological and metabolic processes, including the sleep/wake cycle. Inter-individual differences in factors associated with circadian system may be due to gene...

  • Article
  • Open Access
1 Citations
830 Views
17 Pages

Association of BMAL1 and CLOCK Gene Polymorphisms with Preeclampsia Risk with Subtype Analysis

  • Fan Xia,
  • Peiwen Wang,
  • Ziye Li,
  • Jiehua Wei,
  • Jianhui Wei,
  • Yuhang Wu,
  • Chu Liu,
  • Shanyu Lin,
  • Suyan Guo and
  • Tingting Wang
  • + 3 authors

6 November 2025

Preeclampsia (PE), a major cause of maternal and perinatal morbidity, is a hypertensive pregnancy disorder with poorly defined pathogenesis. While dysregulation of core circadian genes including brain and muscle ARNT-like 1 (BMAL1; also termed ARNTL)...

  • Article
  • Open Access
17 Citations
4,973 Views
14 Pages

Polymorphism of CLOCK Gene rs3749474 as a Modulator of the Circadian Evening Carbohydrate Intake Impact on Nutritional Status in an Adult Sample

  • Marina Camblor Murube,
  • Elena Borregon-Rivilla,
  • Gonzalo Colmenarejo,
  • Elena Aguilar-Aguilar,
  • J. Alfredo Martínez,
  • Ana Ramírez De Molina,
  • Guillermo Reglero and
  • Viviana Loria-Kohen

19 April 2020

The aim of this study was to evaluate the distribution of energy intake and macronutrients consumption throughout the day, and how its effect on nutritional status can be modulated by the presence of the rs3749474 polymorphism of the CLOCK gene in th...

  • Article
  • Open Access
5 Citations
2,587 Views
12 Pages

13 May 2023

Food intake could mitigate or exacerbate the risk for insomnia associated with the CLOCK gene. This study investigated the associations between the clock circadian regulator (CLOCK) polymorphisms rs12649507 and rs4580704 and the risk of insomnia, as...

  • Brief Report
  • Open Access
3 Citations
2,329 Views
7 Pages

Polymorphisms in ARNTL/BMAL1 and CLOCK Are Not Associated with Multiple Sclerosis in Spanish Population

  • Isabel de Rojas,
  • César Martin-Montero,
  • Maria Fedetz,
  • Adela González-Jiménez,
  • Fuencisla Matesanz,
  • Elena Urcelay and
  • Laura Espino-Paisán

28 September 2022

Disrupted circadian cycle has been reported in multiple sclerosis (MS). Previous genome-wide association studies (GWAS) singled out over 230 variants associated with MS. A study performed in a Slavic population identified two new single nucleotide po...

  • Article
  • Open Access
25 Citations
7,266 Views
13 Pages

CLOCK Polymorphisms in Attention-Deficit/Hyperactivity Disorder (ADHD): Further Evidence Linking Sleep and Circadian Disturbances and ADHD

  • Marina Xavier Carpena,
  • Mara H. Hutz,
  • Angélica Salatino-Oliveira,
  • Guilherme V. Polanczyk,
  • Cristian Zeni,
  • Marcelo Schmitz,
  • Rodrigo Chazan,
  • Julia P. Genro,
  • Luis Augusto Rohde and
  • Luciana Tovo-Rodrigues

28 January 2019

Circadian and sleep disorders, short sleep duration, and evening chronotype are often present in attention-deficit/hyperactivity disorder (ADHD). CLOCK, considered the master gene in the circadian rhythm, has been explored by few studies. Understandi...

  • Article
  • Open Access
3 Citations
3,016 Views
9 Pages

CLOCK 3111TT Genotype Is Associated with Increased Total Cholesterol and Low-Density Lipoprotein Levels in Menopausal Women with a Body Mass Index of at Least 25 kg/m2

  • Natalya Semenova,
  • Irina Madaeva,
  • Sergey Kolesnikov,
  • Lyubov Rychkova,
  • Tatjana Bairova,
  • Marina Darenskaya and
  • Lyubov Kolesnikova

Lipid profile comparative analysis was performed to reveal the interdependence of lipids with Circadian locomoter output cycles protein kaput (CLOCK) 3111T/C gene polymorphism in menopausal women with/without a body mass index (BMI) of ≥25 kg/m2....

  • Article
  • Open Access
33 Citations
5,557 Views
13 Pages

10 February 2020

The circadian rhythm regulates various physiological mechanisms, and its disruption can promote many disorders. Disturbance of endogenous circadian rhythms enhances the chance of myocardial infarction (MI), showing that circadian clock genes could ha...

  • Article
  • Open Access
3 Citations
2,238 Views
12 Pages

New Insights into Health Conditions Related to Malfunctions in Clock Genes

  • Kaja Majewska,
  • Mikołaj Seremak,
  • Katarzyna Podhorodecka,
  • Maria Derkaczew,
  • Bartosz Kędziora,
  • Paulina Boniecka,
  • Kamila Zglejc-Waszak,
  • Agnieszka Korytko,
  • Małgorzata Pawłowicz and
  • Joanna Wojtkiewicz

11 October 2024

Chronotypes play a crucial role in regulating sleep–wake cycles and overall health. The aim of this study was to investigate chronotype, sleep quality, polymorphisms of clock genes and the level of leptin in serum. We used standardized question...

  • Article
  • Open Access
6 Citations
3,824 Views
10 Pages

The circadian locomotor output cycles kaput (CLOCK) gene plays a crucial role in regulating circadian rhythms through its transcription factor gene product. The objective of this study was to investigate the association between CLOCK rs1801260 and th...

  • Review
  • Open Access
18 Citations
7,484 Views
15 Pages

26 August 2021

In this review, we discuss reports of genotype-dependent interindividual differences in phenotypic neurobehavioral responses to total sleep deprivation or sleep restriction. We highlight the importance of using the candidate gene approach to further...

  • Article
  • Open Access
10 Citations
3,564 Views
12 Pages

Polymorphic Appetite Effects on Waist Circumference Depend on rs3749474 CLOCK Gene Variant

  • Isabel Espinosa-Salinas,
  • Rodrigo San-Cristobal,
  • Gonzalo Colmenarejo,
  • Viviana Loria-Kohen,
  • Susana Molina,
  • Guillermo Reglero,
  • Ana Ramirez de Molina and
  • J. Alfredo Martinez

21 June 2020

Chronobiological aspects controlled by CLOCK genes may influence obesity incidence. Although there are studies that show an association between the expression of these genes and energy intake, waist circumference or abdominal obesity phenotypes, inte...

  • Article
  • Open Access
19 Citations
4,406 Views
12 Pages

Sex Differences in Circadian Clock Genes and Myocardial Infarction Susceptibility

  • Ivana Škrlec,
  • Jasminka Talapko,
  • Martina Juzbašić and
  • Robert Steiner

The growing body of evidence shows a significant difference in the circadian rhythm of cardiovascular disease based on biological sex. The incidence of cardiovascular disease varies between women and men. Additionally, biological sex is vital for the...

  • Article
  • Open Access
1,201 Views
13 Pages

9 January 2025

Organisms have the capacity to detect day–night fluctuations through oscillators regulated by circadian clock genes, which are crucial for regulating various biological processes. Numerous studies have demonstrated a marked association between...

  • Article
  • Open Access
1 Citations
2,478 Views
14 Pages

Circadian Gene Variants: Effects in Overweight and Obese Pregnant Women

  • Marica Franzago,
  • Paola Borrelli,
  • Pierluigi Cavallo,
  • Luciano Di Tizio,
  • Diego Gazzolo,
  • Marta Di Nicola,
  • Liborio Stuppia and
  • Ester Vitacolonna

Obesity and overweight are common and complex conditions influenced by multiple genetic and environmental factors. Several genetic variants located in the genes involved in clock systems and fat taste perception can affect metabolic health. In partic...

  • Article
  • Open Access
1,431 Views
14 Pages

5 September 2025

Background: Mood disorders, including anxiety, depression, and seasonal affective disorder (SAD), are often comorbid and can be exacerbated by the misalignment of an individual’s circadian rhythm with their social timing. Single-nucleotide poly...

  • Article
  • Open Access
21 Citations
4,944 Views
14 Pages

Influence of ApoE Genotype and Clock T3111C Interaction with Cardiovascular Risk Factors on the Progression to Alzheimer’s Disease in Subjective Cognitive Decline and Mild Cognitive Impairment Patients

  • Valentina Bessi,
  • Juri Balestrini,
  • Silvia Bagnoli,
  • Salvatore Mazzeo,
  • Giulia Giacomucci,
  • Sonia Padiglioni,
  • Irene Piaceri,
  • Marco Carraro,
  • Camilla Ferrari and
  • Benedetta Nacmias
  • + 2 authors

Background: Some genes could interact with cardiovascular risk factors in the development of Alzheimer’s disease. We aimed to evaluate the interaction between ApoE ε4 status, Clock T3111C and Per2 C111G polymorphisms with cardiovascular...

  • Article
  • Open Access
142 Citations
18,296 Views
22 Pages

Clock Genes and Altered Sleep–Wake Rhythms: Their Role in the Development of Psychiatric Disorders

  • Annaëlle Charrier,
  • Bertrand Olliac,
  • Pierre Roubertoux and
  • Sylvie Tordjman

In mammals, the circadian clocks network (central and peripheral oscillators) controls circadian rhythms and orchestrates the expression of a range of downstream genes, allowing the organism to anticipate and adapt to environmental changes. Beyond th...

  • Article
  • Open Access
2 Citations
3,014 Views
12 Pages

Genetic Polymorphisms Associated with Prothrombin Time and Activated Partial Thromboplastin Time in Chinese Healthy Population

  • Fan Zhang,
  • Guangyan Mu,
  • Zhiyan Liu,
  • Qiufen Xie,
  • Hanxu Zhang,
  • Shuang Zhou,
  • Zhe Wang,
  • Kun Hu,
  • Zining Wang and
  • Qian Xiang
  • + 2 authors

15 October 2022

(1) Background: The purpose of this study was to evaluate the effect of gene polymorphisms on prothrombin time (PT) and activated partial thromboplastin time (APTT) in a healthy Chinese population. (2) Methods: A total of 403 healthy volunteers from...

  • Article
  • Open Access
4 Citations
2,857 Views
11 Pages

The Significant Associations between Epigenetic Clocks and Bladder Cancer Risks

  • Yang Deng,
  • Chia-Wen Tsai,
  • Wen-Shin Chang,
  • Yifan Xu,
  • Maosheng Huang,
  • Da-Tian Bau and
  • Jian Gu

27 June 2024

Bladder cancer is an age-related disease, with over three-quarters of cases occurring in individuals aged 65 years and older. Accelerated biological aging has been linked to elevated cancer risks. Epigenetic clocks serve as excellent predictors of bi...

  • Article
  • Open Access
3 Citations
3,164 Views
10 Pages

Type 2 Deiodinase Thr92Ala Polymorphism Is Not Associated with Cognitive Impairment in Older Adults: A Cross-Sectional Study

  • Wallace Klein Schwengber,
  • Vitor Bock Silveira,
  • Guilherme Moreira Hetzel,
  • Amanda Robaina,
  • Lucieli Ceolin,
  • Marli Teresinha Camelier,
  • Iuri Goemann,
  • Roberta Rigo Dalla Corte,
  • Rafael Selbach Scheffel and
  • José Miguel Dora
  • + 2 authors

21 April 2022

Background: Type 2 Deiodinase (DIO2) converts thyroxine (T4) into the active hormone triiodothyronine (T3). Thr92Ala DIO2 polymorphism has been associated with reduced conversion of T4 into T3 and central nervous system hypothyroidism. However, how T...

  • Article
  • Open Access
17 Citations
3,593 Views
15 Pages

Daytime Lipid Metabolism Modulated by CLOCK Gene Is Linked to Retinal Ganglion Cells Damage in Glaucoma

  • Denis Gubin,
  • Vladimir Neroev,
  • Tatyana Malishevskaya,
  • Sergey Kolomeichuk,
  • Dietmar Weinert,
  • Natalya Yuzhakova,
  • Alsu Nelaeva,
  • Yulia Filippova and
  • Germaine Cornelissen

23 June 2022

Lipid metabolism is intimately linked to circadian mechanisms and light signaling. Deteriorated photic transduction because of retinal ganglion cell (RGC) loss occurring with glaucoma progression reduces perceived light amplitude, causing circadian d...

  • Article
  • Open Access
10 Citations
4,941 Views
19 Pages

Timing of Meals and Sleep in the Mediterranean Population: The Effect of Taste, Genetics, Environmental Determinants, and Interactions on Obesity Phenotypes

  • Rocío Barragán,
  • Rebeca Fernández-Carrión,
  • Eva María Asensio-Márquez,
  • Carolina Ortega-Azorín,
  • Andrea Álvarez-Sala,
  • Alejandro Pérez-Fidalgo,
  • José Vicente Sorlí,
  • Olga Portolés,
  • Inmaculada González-Monje and
  • Dolores Corella
  • + 1 author

30 January 2023

Circadian rhythms regulate the sleep–wake and feeding–fasting cycles. Sleep and feeding constitute a complex cycle that is determined by several factors. Despite the importance of sleep duration and mealtimes for many obesity phenotypes,...

  • Article
  • Open Access
10 Citations
2,518 Views
8 Pages

Influence of CLOCK Gene Variants on Weight Response after Bariatric Surgery

  • Macarena Torrego-Ellacuría,
  • Ana Barabash,
  • Pilar Matía-Martín,
  • Andrés Sánchez-Pernaute,
  • Antonio J. Torres,
  • Alfonso L. Calle-Pascual and
  • Miguel A. Rubio-Herrera

24 August 2022

The Circadian Locomotor Output Cycles Kaput (CLOCK) gene has been linked to metabolic dysfunction and obesity. The purpose of this study was to analyze the association between single nucleotide polymorphisms (SNPs) of CLOCK gene with obesity and with...

  • Review
  • Open Access
10 Citations
7,376 Views
11 Pages

Genetic Variations Associated with Sleep Disorders in Patients with Schizophrenia: A Systematic Review

  • Konstantinos Assimakopoulos,
  • Katerina Karaivazoglou,
  • Maria Skokou,
  • Marina Kalogeropoulou,
  • Panagiotis Kolios,
  • Philippos Gourzis,
  • George P. Patrinos and
  • Evangelia Eirini Tsermpini

Background: Schizophrenic patients commonly suffer from sleep disorders which are associated with acute disease severity, worsening prognoses and a poorer quality of life. Research is attempting to disentangle the complex interplay between schizophre...

  • Review
  • Open Access
114 Citations
15,076 Views
20 Pages

26 July 2012

Copy Number Variations (CNVs) and Single Nucleotide Polymorphisms (SNPs) have been the major focus of most large-scale comparative genomics studies to date. Here, we discuss a third, largely ignored, type of genetic variation, namely changes in tande...

  • Review
  • Open Access
627 Views
21 Pages

DNA methylation is a central epigenetic mechanism that mediates the interaction between nutritional exposures and gene regulation. Emerging evidence demonstrates that diet, bioactive compounds, genetic background, and lifestyle factors collectively s...

  • Article
  • Open Access
1,380 Views
18 Pages

BDNF Val66Met Genotype, DNA Methylation, mRNA, and Protein Levels as Potential Blood-Based Biomarkers for Dementia and Cognitive Decline

  • Lucija Tudor,
  • Alja Videtic Paska,
  • Marcela Konjevod,
  • Nikola Balic,
  • Matea Nikolac Perkovic,
  • Suzana Uzun,
  • Barbara Vuic,
  • Tina Milos,
  • Gordana Nedic Erjavec and
  • Dubravka Svob Strac
  • + 3 authors

15 September 2025

Brain-derived neurotrophic factor (BDNF) plays a crucial role in cognitive functions and dementia. In individuals with mild cognitive impairment (MCI) and dementia, we have investigated BDNF Val66Met genotype distribution, peripheral BDNF DNA methyla...

  • Article
  • Open Access
2 Citations
2,487 Views
18 Pages

9 May 2024

The objective of this study was to investigate gene regulation of the developing fetal brain from congenic or inbred mice strains that differed in longevity. Gene expression and alternative splice variants were analyzed in a genome-wide manner in the...

  • Article
  • Open Access
2 Citations
2,485 Views
17 Pages

The Complete Chloroplast Genome Sequence of Laportea bulbifera (Sieb. et Zucc.) Wedd. and Comparative Analysis with Its Congeneric Species

  • Huihui Zhang,
  • Yujing Miao,
  • Xinke Zhang,
  • Guoshuai Zhang,
  • Xiao Sun,
  • Min Zhang,
  • Zhan Feng and
  • Linfang Huang

28 November 2022

Laportea bulbifera (L. bulbifera) is an important medicinal plant of Chinese ethnic minorities, with high economic and medicinal value. However, the medicinal materials of the genus Laportea are prone to be misidentified due to the similar morphologi...

  • Case Report
  • Open Access
2 Citations
1,874 Views
13 Pages

From Investigating a Case of Cellulitis to Exploring Nosocomial Infection Control of ST1 Legionella pneumophila Using Genomic Approaches

  • Charlotte Michel,
  • Fedoua Echahidi,
  • Sammy Place,
  • Lorenzo Filippin,
  • Vincent Colombie,
  • Nicolas Yin,
  • Delphine Martiny,
  • Olivier Vandenberg,
  • Denis Piérard and
  • Marie Hallin

Legionella pneumophila can cause a large panel of symptoms besides the classic pneumonia presentation. Here we present a case of fatal nosocomial cellulitis in an immunocompromised patient followed, a year later, by a second case of Legionnaires&rsqu...

  • Systematic Review
  • Open Access
8 Citations
5,004 Views
24 Pages

1 August 2024

Metabolic and bariatric surgery (MBS) effectively treats obesity and related comorbidities, though individual responses vary. This systematic review examines how genetic variants influence MBS outcomes in morbidly obese patients. A comprehensive sear...

  • Article
  • Open Access
1 Citations
5,100 Views
13 Pages

Effects of Gene–Lifestyle Interaction on Obesity Among Students

  • Emiliya S. Egorova,
  • Kamilla K. Aseyan,
  • Elvina R. Bikbova,
  • Anastasia E. Zhilina,
  • Elena V. Valeeva and
  • Ildus I. Ahmetov

24 November 2024

Background: Obesity is a global health issue influenced primarily by genetic variants and environmental factors. This study aimed to examine the relationship between genetic and lifestyle factors and their interaction with obesity risk among universi...