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Hodžić A, Lavtar P, Ristanović M, Novaković I, Dotlić J, Peterlin B. Genetic variation in the CLOCK gene is associated with idiopathic recurrent spontaneous abortion. PLoS One 2018; 13:e0196345. [PMID: 29768442 PMCID: PMC5955485 DOI: 10.1371/journal.pone.0196345] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 04/11/2018] [Indexed: 11/18/2022] Open
Abstract
Physiological studies in animals and human support an important role of circadian system in reproduction. The aim of this study was to investigate the potential association of CLOCK gene polymorphisms with idiopathic recurrent spontaneous abortion (IRSA). We performed a case-control study. The study group consisted of 268 women with a history of three or more idiopathic recurrent spontaneous abortions and 284 women with at least two live births and no history of pathologic pregnancies all from Slovenia and Serbia. Two SNPs in the CLOCK gene were chosen and genotyped. The results showed a statistically significant difference in genotype distribution between the two groups in the CLOCK gene for rs6850524 and rs11932595. Our analysis showed that G allele under dominant model (GG+GC/CC) for rs6850524 (p = 2∙10-4, OR = 2.28, 95%CI = 1.46-3.56) as well as G allele under dominant model (GA+AA/AA) for rs11932595 (p = 0.04, OR = 1.47, 95%CI = 1.01-2.04) might be risk factors against IRSA. Our data suggest that genetic variability in the CLOCK gene is associated with IRSA warranting further confirmation and mechanistic investigations.
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Affiliation(s)
- Alenka Hodžić
- Clinical Institute of Medical Genetics, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Polona Lavtar
- Clinical Institute of Medical Genetics, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Momčilo Ristanović
- Institute of Human Genetics, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Ivana Novaković
- Institute of Human Genetics, Medical Faculty, University of Belgrade, Belgrade, Serbia
| | - Jelena Dotlić
- Clinic for Obstetrics and Gynecology, Clinical Center of Serbia, Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Borut Peterlin
- Clinical Institute of Medical Genetics, University Medical Centre Ljubljana, Ljubljana, Slovenia
- * E-mail:
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Lavtar P, Rudolf G, Maver A, Hodžić A, Starčević Čizmarević N, Živković M, Šega Jazbec S, Klemenc Ketiš Z, Kapović M, Dinčić E, Raičević R, Sepčić J, Lovrečić L, Stanković A, Ristić S, Peterlin B. Association of circadian rhythm genes ARNTL/BMAL1 and CLOCK with multiple sclerosis. PLoS One 2018; 13:e0190601. [PMID: 29324865 PMCID: PMC5764259 DOI: 10.1371/journal.pone.0190601] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2017] [Accepted: 12/18/2017] [Indexed: 01/19/2023] Open
Abstract
Prevalence of multiple sclerosis varies with geographic latitude. We hypothesized that this fact might be partially associated with the influence of latitude on circadian rhythm and consequently that genetic variability of key circadian rhythm regulators, ARNTL and CLOCK genes, might contribute to the risk for multiple sclerosis. Our aim was to analyse selected polymorphisms of ARNTL and CLOCK, and their association with multiple sclerosis. A total of 900 Caucasian patients and 1024 healthy controls were compared for genetic signature at 8 SNPs, 4 for each of both genes. We found a statistically significant difference in genotype (ARNTL rs3789327, P = 7.5·10-5; CLOCK rs6811520 P = 0.02) distributions in patients and controls. The ARNTL rs3789327 CC genotype was associated with higher risk for multiple sclerosis at an OR of 1.67 (95% CI 1.35-2.07, P = 0.0001) and the CLOCK rs6811520 genotype CC at an OR of 1.40 (95% CI 1.13-1.73, P = 0.002). The results of this study suggest that genetic variability in the ARNTL and CLOCK genes might be associated with risk for multiple sclerosis.
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Affiliation(s)
- Polona Lavtar
- Clinical Institute of Medical Genetics, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Gorazd Rudolf
- Clinical Institute of Medical Genetics, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Aleš Maver
- Clinical Institute of Medical Genetics, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Alenka Hodžić
- Clinical Institute of Medical Genetics, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Nada Starčević Čizmarević
- Departments of Biology and Medical Genetics, School of Medicine, University of Rijeka, Rijeka, Croatia
| | - Maja Živković
- Laboratories of Radiobiology and Molecular Genetics, Institute of Nuclear Sciences “Vinča”, Belgrade, Serbia
| | - Saša Šega Jazbec
- Department of Neurology, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Zalika Klemenc Ketiš
- Departments of Family Medicine, Medical School, University of Ljubljana, Ljubljana, Slovenia
- Departments of Family Medicine, Medical School, University of Maribor, Maribor, Slovenia
| | - Miljenko Kapović
- Departments of Biology and Medical Genetics, School of Medicine, University of Rijeka, Rijeka, Croatia
| | - Evica Dinčić
- Departments of Neurology, Military Medical Academy, Belgrade, Serbia
| | - Ranko Raičević
- Departments of Neurology, Military Medical Academy, Belgrade, Serbia
| | - Juraj Sepčić
- Postgraduate Studies, School of Medicine, University of Rijeka, Rijeka, Croatia
| | - Luca Lovrečić
- Clinical Institute of Medical Genetics, University Medical Centre Ljubljana, Ljubljana, Slovenia
| | - Aleksandra Stanković
- Laboratories of Radiobiology and Molecular Genetics, Institute of Nuclear Sciences “Vinča”, Belgrade, Serbia
| | - Smiljana Ristić
- Departments of Biology and Medical Genetics, School of Medicine, University of Rijeka, Rijeka, Croatia
| | - Borut Peterlin
- Clinical Institute of Medical Genetics, University Medical Centre Ljubljana, Ljubljana, Slovenia
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Nadalin S, Buretić-Tomljanović A, Lavtar P, Starčević Čizmarević N, Hodžić A, Sepčić J, Kapović M, Peterlin B, Ristić S. The lack of association between angiotensin-converting enzyme gene insertion/deletion polymorphism and nicotine dependence in multiple sclerosis. Brain Behav 2017; 7:e00600. [PMID: 28127518 PMCID: PMC5256183 DOI: 10.1002/brb3.600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Revised: 09/14/2016] [Accepted: 10/03/2016] [Indexed: 11/09/2022] Open
Abstract
OBJECTIVE Blood-borne angiotensin II is generated from angiotensinogen via cleavage by renin and angiotensin-converting enzyme (ACE), an enzymatic cascade known as the renin-angiotensin system (RAS). Several lines of evidence indicate that ACE, beyond its classical role of mediating blood pressure regulation, might contribute to the etiology of substance addictions by influencing dopaminergic signaling. A functional insertion/deletion (I/D) polymorphism of the ACE gene was associated with risk for being a smoker among individuals with depression and with smoking severity in studies comprising patients with depression and healthy controls. Several reports have described significantly increased ACE activity in cerebrospinal fluid and serum among MS patients. Furthermore, in our previous work with MS patients from Croatian and Slovenian populations, we demonstrated that the ACE-I/D polymorphism contributes to an elevated MS risk among male patients. Here we investigated whether the ACE-I/D polymorphism might influence smoking behavior among patients with MS. PATIENTS AND METHODS Genotyping was performed in 521 patients (males/females: 139/382) using polymerase chain reaction. RESULTS We revealed no significant differences in ACE genotype and allele frequencies between smokers and nonsmokers and no significant association between the ACE-I/D polymorphism and either pack-year smoking history or number of cigarettes smoked daily (p > .05, respectively). CONCLUSION The ACE-I/D polymorphism does not contribute either to risk for nicotine dependence or to smoking severity among MS patients. In the context of reports on the ACE-I/D polymorphism and nicotine dependence among healthy controls and patients with depression, we may speculate that the mechanism by which this polymorphism influences nicotine dependence risk differs in MS compared to depression, although not compared to a healthy population. In addition to angiotensin II, other potential ACE substrates, such as substance P and neurotensin, which also influence dopaminergic neurotransmission (and are proposed to be associated with MS), may deserve study in future.
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Affiliation(s)
- Sergej Nadalin
- Department of Biology and Medical Genetics School of Medicine University of Rijeka Rijeka Croatia
| | | | - Polona Lavtar
- Clinical Institute of Medical Genetics University Medical Centre Ljubljana Slovenia
| | | | - Alenka Hodžić
- Clinical Institute of Medical Genetics University Medical Centre Ljubljana Slovenia
| | - Juraj Sepčić
- Postgraduate Studies School of Medicine University of Rijeka Rijeka Croatia
| | - Miljenko Kapović
- Department of Biology and Medical Genetics School of Medicine University of Rijeka Rijeka Croatia
| | - Borut Peterlin
- Clinical Institute of Medical Genetics University Medical Centre Ljubljana Slovenia
| | - Smiljana Ristić
- Department of Biology and Medical Genetics School of Medicine University of Rijeka Rijeka Croatia
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Gašparović I, Čizmarević NS, Lovrečić L, Perković O, Lavtar P, Sepčić J, Jazbec SŠ, Kapović M, Peterlin B, Ristić S. MMP-2 −1575G/A polymorphism modifies the onset of optic neuritis as a first presenting symptom in MS? J Neuroimmunol 2015; 286:13-5. [DOI: 10.1016/j.jneuroim.2015.06.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2015] [Accepted: 06/29/2015] [Indexed: 02/04/2023]
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Čizmarević NS, Gašparović I, Peterlin B, Sepčić J, Rudolf G, Kapović M, Lavtar P, Ristić S. CTLA-4 +49 A/G gene polymorphism in Croatian and Slovenian multiple sclerosis patients. Int J Immunogenet 2011; 38:419-26. [DOI: 10.1111/j.1744-313x.2011.01027.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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