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Veerabathiran R, P A, BK I, D R, RS AH. Genetic predisposition of LEPR (rs1137101) gene polymorphism related to type 2 diabetes mellitus - a meta-analysis. Ann Med 2024; 55:2302520. [PMID: 38198642 PMCID: PMC10783847 DOI: 10.1080/07853890.2024.2302520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Accepted: 01/02/2024] [Indexed: 01/12/2024] Open
Abstract
Background: Type 2 diabetes mellitus (T2DM) is a multifaceted disease appropriate to elevated blood glucose levels resulting from decreased insulin and beta-cell activity. Using a case-control methodology, researchers have examined the relationship between polymorphisms in LEPR and T2DM in a population from south India.Materials and Methods: We conducted a genetic analysis of 311 participants, and results were accomplished using a case-control study, a meta-analysis of previous studies on LEPR was conducted, and type 2 diabetes genotype distribution across various geographical regions Malaysians, Chinese Han, Kuwait, Iran, Mongolia, and Han Chinese, Greece, Saudi, India (North India, Punjabi), (South India, Tamilnadu). The study involved 254 prospective investigations, and nine association studies were preferred according to preset criteria. Studies were assessed for quality using the Hardy-Weinberg equilibrium (HWE) and the Newcastle-Ottawa Scale (NOS). An analysis of the genetic models was conducted to determine their relationship, statistical analysis was utilized to calculate odds ratios (ORs) and matching 95% confidence intervals (CIs).Results: The LEPR-rs1137101 polymorphism in the case-control study was associated with a significant increase in the risk of type 2 diabetes. A meta-analysis revealed a connection between LEPR gene polymorphism (rs1137101) and type 2 diabetes risk. Investigators might gain a more profound thought on the significance of the identified genetic variation and its impact on the chance of developing type 2 diabetes by verifying and strengthening previously reported findings. The model of fixed effects was chosen due to the low heterogeneity, and significant associations were observed in the allelic (OR = 0.79, 95% CI [0.70-0.87]), homozygote (OR = 0.58, 95% CI [0.46-0.72]), dominant (OR = 0.66, 95% CI [0.56-0.79]), and recessive (OR = 0.83, 95% CI [0.71-0.96]) genetic models. A Begg's funnel plot and Egger's test indicated no publication bias. These findings suggest that the rs1137101 variant in the LEPR gene has been linked to a higher risk of T2DM.Conclusions: A larger sample size, however, is required for further research, and consideration of potential confounding factors is needed to validate these associations. Understanding the implications of LEPR gene polymorphisms in T2DM susceptibility may contribute to personalized treatment strategies for patients with T2DM.
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Affiliation(s)
- Ramakrishnan Veerabathiran
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Tamilnadu, India
| | - Aswathi P
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Tamilnadu, India
| | - Iyshwarya BK
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Tamilnadu, India
| | - Rajasekaran D
- Department of General Medicine, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Kelambakkam, Tamilnadu, India
| | - Akram Hussain RS
- Human Cytogenetics and Genomics Laboratory, Faculty of Allied Health Sciences, Chettinad Hospital and Research Institute, Chettinad Academy of Research and Education, Tamilnadu, India
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Dziedziejko V, Safranow K, Kijko-Nowak M, Malinowski D, Domanski L, Pawlik A. Leptin receptor gene polymorphisms in kidney transplant patients with post-transplant diabetes mellitus treated with tacrolimus. Int Immunopharmacol 2023; 124:110989. [PMID: 37776770 DOI: 10.1016/j.intimp.2023.110989] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2023] [Revised: 08/17/2023] [Accepted: 09/22/2023] [Indexed: 10/02/2023]
Abstract
Post-transplant diabetes mellitus (PTDM) is a metabolic complication that often occurs after kidney transplantation. Factors that increase the risk of this complication are currently being researched, including polymorphisms in genes affecting carbohydrate-lipid metabolism. Leptin is a hormone that affects appetite and adipose tissue and plays an important role in regulating insulin secretion as well as glucose and lipid metabolism. The aim of this study was to examine the association between leptin receptor gene polymorphisms and the development of post-transplant diabetes mellitus in patients treated with tacrolimus. The study was carried out in a group of 201 patients who underwent kidney transplantation. The follow-up period was 12 months. PTDM was diagnosed in 35 patients. Analysing the LEPR gene rs1137101 polymorphism, we observed in patients with PTDM an increased frequency of GG genotype carriers (GG vs AA, OR 3.36; 95 % CI 0.99-11.46; p = 0.04). There were no statistically significant differences in the distribution of the LEPR rs1137100 and LEPR rs1805094 polymorphisms between patients with and without PTDM. Multivariate regression analysis confirmed that female sex, advanced age, increased BMI and a higher number of LEPR rs1137101 G alleles were independent risk factors for PTDM development. The risk of PTDM development was almost 3.5 times greater in LEPR rs1137101 G allele carriers than in AA homozygotes (GG + AG vs AA; OR 3.48; 95 %CI (1.09-11.18), p = 0.035). The results suggest that patients after kidney transplantation with the LEPR gene rs1137101 G allele may have an increased risk of post-transplant diabetes development.
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Affiliation(s)
- Violetta Dziedziejko
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, 70-111 Szczecin, Poland.
| | - Krzysztof Safranow
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University, 70-111 Szczecin, Poland.
| | - Mirosława Kijko-Nowak
- Department of Nephrology, Transplantology and Internal Medicine, Pomeranian Medical University, 70-111 Szczecin, Poland.
| | - Damian Malinowski
- Department of Experimental and Clinical Pharmacology, Pomeranian Medical University, 70-111 Szczecin, Poland.
| | - Leszek Domanski
- Department of Nephrology, Transplantology and Internal Medicine, Pomeranian Medical University, 70-111 Szczecin, Poland.
| | - Andrzej Pawlik
- Department of Physiology, Pomeranian Medical University, 70-111 Szczecin, Poland.
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Mirrakhimov E, Bektasheva E, Isakova J, Lunegova O, Kerimkulova A, Abilova S, Neronova K, Alibaeva N, Mamatuulu YU, Kudaibergenova I, Banach M, Mirrakhimov A. Association of leptin receptor gene Gln223Arg polymorphism with insulin resistance and hyperglycemia in patients with metabolic syndrome. Arch Med Sci 2023; 20:54-60. [PMID: 38414477 PMCID: PMC10895948 DOI: 10.5114/aoms/170121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 07/27/2023] [Indexed: 02/29/2024] Open
Abstract
Introduction Worldwide, there has been an increase in the incidence of metabolic syndrome. The search for genetic markers of this syndrome is ongoing. The leptin receptor has recently received attention. One of the polymorphisms (Gln223Arg) is possibly associated with the development of obesity and insulin resistance. However, the results of studies on this polymorphism remain equivocal. Gln223Arg polymorphism has not been studied previously in the Kyrgyz population. Thus, we aimed to investigate the possible association of the Gln223Arg polymorphism of the leptin receptor gene with metabolic syndrome components in the Kyrgyz population. Material and methods 237 Kyrgyz subjects, aged 35-70 years, were studied. For the analysis anthropometric data, glucose, insulin, lipid spectrum, leptin were obtained. The genotype of the Gln223Arg leptin polymorphism was evaluated using TaqMan real-time PCR. Results The distribution of genotypes was as follows: Gln223Gln 46.4%, Gln223Arg 40.1%, Arg223Arg 13.5%. In the study no association was found with abdominal obesity, arterial hypertension, hypertriglyceridemia or low-density cholesterol levels. Relationships of Gln223Arg and Arg223Arg genotypes with insulin resistance (p < 0.03) were found. Gln223Arg polymorphism was associated with a higher level of glycemia (5.54 vs. 5.39 mmol/l, p < 0.05) and insulinemia (8.3 vs. 7.1 µIU/ml, p < 0.05). Correlation analysis showed that carriers of the Arg223 allele demonstrated a higher risk of insulin resistance (odds ratio (OR) = 1.83, 95% CI: 1.03-3.24; p < 0.03) than carriers of the Gln223 allele. Conclusions Gln223Arg polymorphism of the leptin receptor gene may be a marker of predisposition to insulin resistance in the Kyrgyz population. Further studies are necessary to confirm these results in populations from other regions.
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Affiliation(s)
- Erkin Mirrakhimov
- Kyrgyz State Medical Academy, Bishkek, Kyrgyzstan
- National Centre of Cardiology and Internal Medicine, Bishkek, Kyrgyzstan
| | | | - Jainagul Isakova
- Institute of Molecular Biology and Medicine, Bishkek, Kyrgyzstan
| | | | | | - Saamay Abilova
- Kyrgyz State Medical Academy, Bishkek, Kyrgyzstan
- National Centre of Cardiology and Internal Medicine, Bishkek, Kyrgyzstan
| | | | | | | | | | - Maciej Banach
- Department of Preventive Cardiology and Lipidology, Medical University of Lodz, Lodz, Poland
- Department of Cardiology and Congenital Diseases of Adults, Polish Mother's Memorial Hospital Research Institute, Lodz, Poland
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Zhao KY, Yuan ML, Wu YN, Cui HW, Han WY, Wang J, Su XL. Association of rs1137101 with hypertension and type 2 diabetes mellitus of Mongolian and Han Chinese. World J Diabetes 2022; 13:643-653. [PMID: 36159223 PMCID: PMC9412857 DOI: 10.4239/wjd.v13.i8.643] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Revised: 06/14/2022] [Accepted: 07/26/2022] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Hypertension (HTN) and type 2 diabetes mellitus (T2DM) are often coincident, and each condition is considered a risk factor for the other. Both occur frequently in the Inner Mongolia region of China. The reasons for differences in risk between Han and Mongolian ethnic groups are not known. The LEPR gene and its polymorphism, rs1137101 (Gln223Arg), are both considered risk factors for HTN and T2DM, but any role of rs1137101 in the occurrence of HTN + T2DM remains unclear for Mongolian and Han populations in the Inner Mongolia region.
AIM To investigate the relationship between rs1137101 and the occurrence of HTN with T2DM in Mongolian and Han populations in Inner Mongolia.
METHODS A total of 2652 subjects of Han and Mongolian ethnic origins were enrolled in the current study, including 908 healthy controls, 1061 HTN patients and 683 HTN patients with T2DM.
RESULTS The association between the rs1137101 polymorphism and HTN with T2DM was analyzed, and differences between Han and Mongolian individuals assessed. There was a significant correlation between rs1137101 and HTN (co-dominant, dominant, over-dominant and log-additive models) and HTN + T2DM (co-dominant, dominant, over-dominant and log-additive models) after adjustment for sex and age in individuals of Mongolian origin. rs1137101 was significantly associated with HTN (co-dominant, recessive and log-additive models) and HTN + T2DM (co-dominant, dominant, over-dominant and log-additive models) in the Han Chinese population.
CONCLUSION Mongolian and Han subjects from Inner Mongolia with HTN who had rs1137101 were protected against the development of T2DM. Allele A has the opposite impact on the occurrence of HTN in Mongolian and Han Chinese populations.
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Affiliation(s)
- Ke-Yu Zhao
- Clinical Medical Research Center of The Affiliated Hospital, Inner Mongolia Key Laboratory of Medical Cellular Biology, Inner Mongolia Medical University, Hohhot 010050, Inner Mongolia Autonomous Region, China
| | - Meng-Lu Yuan
- School of Public Health, Inner Mongolia Medical University, Huhhot 010050, Inner Mongolia Autonomous Region, China
| | - Yun-Na Wu
- Medical Clinical Laboratory, Huhhot First Hospital, Huhhot 010050, Inner Mongolia Autonomous Region, China
| | - Hong-Wei Cui
- Department of Scientific Research, Inner Mongolia Autonomous Region Cancer Hospital/The Affiliated People’s Hospital of Inner Mongolia Medical University, Huhhot 010050, Inner Mongolia Autonomous Region, China
| | - Wen-Yan Han
- Clinical Medical Laboratory Center, The Second Affiliated Hospital of Inner Mongolia Medical University, Huhhot 010050, Inner Mongolia Autonomous Region, China
| | - Jing Wang
- Graduate School, Inner Mongolia Medical University, Huhhot 010050, Inner Mongolia Autonomous Region, China
| | - Xiu-Lan Su
- Clinical Medical Research Center of The Affiliated Hospital, Inner Mongolia Key Laboratory of Medical Cellular Biology, Inner Mongolia Medical University, Hohhot 010050, Inner Mongolia Autonomous Region, China
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Lari F, Alabduljaleel T, Mojiminiyi O, Shehab D, Al-Temaimi RA. Exploring the relationship between vitamin D and leptin hormones in type 2 diabetes mellitus patients from Kuwait. Horm Mol Biol Clin Investig 2022; 43:273-280. [PMID: 35417932 DOI: 10.1515/hmbci-2021-0091] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 03/13/2022] [Indexed: 11/15/2022]
Abstract
BACKGROUND Type 2 diabetes mellitus (T2DM) and obesity are prevalent in Kuwait. Vitamin D (VD) deficiency and leptin resistance are risk factors for both disorders. A correlation between the two risk factors has been suggested albeit inconsistently reported. Our objective was to determine the effect and association of VD and leptin levels and their related common variants with T2DM. METHODS This case-control study included 203 Kuwaiti T2DM patients and 162 healthy Kuwaiti controls. Leptin and VD levels were measured using enzyme linked immunosorbent assays. Genotyping of LEP rs7799039, LEPR rs1137101, VDR rs2228570 and rs731236 was performed using Taqman genotyping assays. RESULTS Leptin levels were higher in T2DM patients than controls, but vitamin D levels did not differ. No correlation was found between the levels of the two hormones. VDR rs731236G associated with T2DM risk (Odds ratio 1.66, p=0.0008). VDR haplotype analysis revealed GG/AA, GA/AA or GG/AG to associate with T2DM risk (p=0.01) and increased risk of diabetic neuropathy (p=0.002). VDR rs2228570GG associated with leptin levels in T2DM (p=0.01). Effect of LEP rs7799039 on leptin (p=0.01) and VD levels (p=0.02) was only evident in healthy controls. CONCLUSIONS VDR rs731236G is associated with T2DM risk in Kuwait, and a VDR haplotype of a less active, low expressing VDR is associated with T2DM and diabetic neuropathy risk. Common variants in leptin and VD related genes appear to mediate the suggested positive correlation of both hormones however their influence is disrupted in T2DM.
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Affiliation(s)
- Fatmah Lari
- Graduate medical program, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Taiba Alabduljaleel
- Graduate medical program, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Olusegun Mojiminiyi
- Department of Clinical Pathology, Clinical chemistry unit, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Dia Shehab
- Department of Medicine, Faculty of Medicine, Kuwait University, Safat, Kuwait
| | - Rabeah Abbas Al-Temaimi
- Department of Clinical Pathology, Human Genetics Unit, Faculty of Medicine, Kuwait University, Safat, Kuwait
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Ibrahim AHM. Polymorphisms in hormone-sensitive lipase and leptin receptor genes and their association with growth traits in Barki lambs. Vet World 2021; 14:515-522. [PMID: 33776319 PMCID: PMC7994136 DOI: 10.14202/vetworld.2021.515-522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2020] [Accepted: 01/19/2021] [Indexed: 11/16/2022] Open
Abstract
Background and Aim Marker-assisted selection has many advantages over conventional selection in animal breeding. The candidate gene approach has been applied to identify genetic markers associated with economically important traits in livestock. This study was established to investigate variation in the hormone-sensitive lipase (HSL) and leptin receptor (LEPR) genes, and their association with growth traits in Barki lambs. Materials and Methods Records for birth weight (BW), pre-weaning average daily gain (ADG1), weaning weight (WW), post-weaning average daily gain (ADG2), and marketing weight (MW) were obtained from 247 Barki lambs. Polymerase chain reaction-single-stranded conformational polymorphism analyses were used to detect variation in exon 9 of HSL and exon 19 of LEPR. General linear models were used to test for associations between the variation in ovine HSL and LEPR, and growth traits. Results The SSCP banding patterns for HSL showed three variants (H1, H2, and H3), which contained two nucleotide-sequence differences (c.1865C>T and c.2038T>C). Two SSCP banding patterns (L1 and L2) were observed for LEPR and these contained two nucleotide-sequence differences (c.2800G>A and c.2978C>G). The HSL genotype showed no effect on the studied traits. The LEPR genotype was proven to have significant effects (p<0.05) on ADG2 and MW. The presence of the L1 variant was associated (p<0.01) with decreased ADG2 and MW. Conclusion The finding of an association between LEPR gene variation and growth rate after weaning in Barki lambs warrants efforts to improve this trait.
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Affiliation(s)
- Adel H M Ibrahim
- Department of Animal Breeding, Desert Research Center, Cairo, Egypt
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Magzoub A, Al-Ayed M, Shaikh IA, Habeeb MS, Al-Shaibary K, Shalayel M. Leptin induces a contracting effect on guinea pig tracheal smooth muscle via the Ob-R receptor mechanism: novel evidence. Can J Physiol Pharmacol 2020; 98:810-817. [PMID: 32687729 DOI: 10.1139/cjpp-2019-0605] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The purpose of this study was to explore the potential contracting effect of leptin on isolated guinea pig tracheal smooth muscle (TSM), the possible mechanism, and the impact of epithelium denudation or allergen sensitization, respectively. An in vitro experiment investigated the effect of leptin at a concentration of 250-1000 nmol/L on isolated guinea pig TSM with an intact or denuded epithelium. Ovalbumin and IgE were used to test the impact of active and passive sensitization. The isolated TSM strips were incubated in Krebs solution and aerated with carbogen (95% O2 and 5% CO2) via an automated tissue organ bath system (n = 4 for each group). Isometric contractions were recorded digitally using iox2 data acquisition software. The possible mechanism of leptin-induced TSM contraction was examined by preincubation with leptin receptor (Ob-R) antagonist. Leptin had significant concentration-dependent contraction effects on guinea pig TSM (p < 0.05). Epithelium denuding and active or passive sensitization significantly increased the potency of the leptin. Preincubation with a leptin receptor (Ob-R) antagonist significantly reduced the contraction effects, suggesting an Ob-R-mediated mechanism. Leptin had a contracting effect on airway smooth muscles potentiated by either epithelium denuding or sensitization, and the Ob-R mechanism was a possible effect mediator.
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Affiliation(s)
- Aamir Magzoub
- Department of Physiology, College of Medicine, Najran University, Saudi Arabia
| | - Mohammed Al-Ayed
- Department of Pediatrics, College of Medicine, Najran University, Saudi Arabia
| | - Ibrahim Ahmed Shaikh
- Department of Pharmacology, College of Pharmacy, Najran University, Saudi Arabia
| | | | - Khalid Al-Shaibary
- Department of Pediatrics, College of Medicine, Najran University, Saudi Arabia
| | - Mohammed Shalayel
- Department of Biochemistry, College of Medicine, Najran University, Saudi Arabia
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Vesnina A, Prosekov A, Kozlova O, Atuchin V. Genes and Eating Preferences, Their Roles in Personalized Nutrition. Genes (Basel) 2020; 11:genes11040357. [PMID: 32230794 PMCID: PMC7230842 DOI: 10.3390/genes11040357] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2020] [Revised: 03/20/2020] [Accepted: 03/26/2020] [Indexed: 12/20/2022] Open
Abstract
At present, personalized diets, which take into account consumer genetic characteristics, are growing popular. Nutrigenetics studies the effect of gene variations on metabolism and nutrigenomics, which branches off further and investigates how nutrients and food compounds affect genes. This work deals with the mutations affecting the assimilation of metabolites, contributing to nutrigenetic studies. We searched for the genes responsible for eating preferences which allow for the tailoring of personalized diets. Presently, genetic nutrition is growing in demand, as it contributes to the prevention and/or rehabilitation of non-communicable diseases, both monogenic and polygenic. In this work, we showed single-nucleotide polymorphisms in genes-missense mutations that change the functions of coded proteins, resulting in a particular eating preferences or a disease. We studied the genes influencing food preferences-particularly those responsible for fats and carbohydrates absorption, food intolerance, metabolism of vitamins, taste sensations, oxidation of xenobiotics, eating preferences and food addiction. As a result, 34 genes were identified that affect eating preferences. Significant shortcomings were found in the methods/programs for developing personalized diets that are used today, and the weaknesses were revealed in the development of nutrigenetics (inconsistency of data on SNP genes, ignoring population genetics data, difficult information to understand consumer, etc.). Taking into account all the shortcomings, an approximate model was proposed in the review for selecting an appropriate personalized diet. In the future, it is planned to develop the proposed model for the compilation of individual diets.
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Affiliation(s)
- Anna Vesnina
- Department of Bionanotechnology, Kemerovo State University, 650043 Kemerovo, Russia; (A.V.); (O.K.)
| | - Alexander Prosekov
- Laboratory of Biocatalysis, Kemerovo State University, 650043 Kemerovo, Russia;
| | - Oksana Kozlova
- Department of Bionanotechnology, Kemerovo State University, 650043 Kemerovo, Russia; (A.V.); (O.K.)
| | - Victor Atuchin
- Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, 630090 Novosibirsk, Russia
- Laboratory of Semiconductor and Dielectric Materials, Novosibirsk State University, 630090 Novosibirsk, Russia
- Research and Development Department, Kemerovo State University, 650000 Kemerovo, Russia
- Correspondence: ; Tel.: +7-(383)-3308889
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Almyah MK, Al-Badran AI. Genetic susceptibility of Iraqis for obesity and type 2 diabetes: LEPR gene polymorphisms. GENE REPORTS 2019. [DOI: 10.1016/j.genrep.2019.100386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Hung WC, Tsai CM, Lin CW, Chuang CY, Yang SF, Weng CJ. Leptin -2548 G/A polymorphisms are associated to clinical progression of oral cancer and sensitive to oral tumorization in nonsmoking population. J Cell Biochem 2019; 120:15145-15156. [PMID: 31021458 DOI: 10.1002/jcb.28776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 01/09/2019] [Accepted: 01/14/2019] [Indexed: 11/06/2022]
Abstract
Oral cancer is causally associated with environmental carcinogens, and the susceptibility to carcinogen-mediated tumorigenesis is proposed to be genotype-dependent. Leptin (LEP) and leptin receptor (LEPR) both play a crucial role in the mediation of physiological reactions and carcinogenesis and may serve as a candidate biomarker of oral cancer. The current case-control study aimed to examine the effects of LEP -2548 G/A (rs7799039), LEPR K109R (rs1137100), and LEPR Q223R (rs1137101) single-nucleotide polymorphisms (SNPs) with or without interacting to environmental carcinogens on the risk for oral squamous cell carcinoma. The SNPs of three genetic allele, from 567 patients with oral cancer and 560 healthy controls in Taiwan were analyzed. The results shown that the patients with polymorphic allele of LEP -2548 have a significant low risk for the development of clinical stage (A/G: adjusted odds ratio [AOR] = 0.670, 95% confidence interval [CI] = 0.454-0.988, P < 0.05; A/G + G/G: AOR = 0.676, 95% CI = 0.467-0.978, P < 0.05) compared to patients with ancestral homozygous A/A genotype. In addition, an interesting result was found that the impact of LEP -2548 G/A SNP on oral carcinogenesis in subjects without tobacco consumption is higher than subjects with tobacco consumption. These results suggest that the genetic polymorphism of LEP -2548 G/A (rs7799039), LEPR K109R (rs1137100), and LEPR Q223R (rs1137101) were not associated to the susceptibility of oral cancer; SNP in LEP -2548 G/A showed a poor clinicopathological development of oral cancer; population without tobacco consumption and with polymorphic LEP -2548 G/A gene may significantly increase the risk to have oral cancer.
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Affiliation(s)
- Wei-Chen Hung
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Chiung-Man Tsai
- Chest Hospital, Ministry of Health and Welfare, Tainan, Taiwan
| | - Chiao-Wen Lin
- Institute of Oral Sciences, Chung Shan Medical University, Taichung, Taiwan.,Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chun-Yi Chuang
- School of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chia-Jui Weng
- Department of Living Services Industry, Tainan University of Technology, Tainan, Taiwan
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Kochetova OV, Avzaletdinova DS, Sharipova LF, Korytina GF, Akhmadishina LZ, Morugova TV, Mustafina OE. An Analysis of the Associations of Polymorphic Variants of the LEPR (rs1137100), LRP5 (rs3736228), and LPL (rs320) Genes with the Risk of Developing Type 2 Diabetes Mellitus. RUSS J GENET+ 2019. [DOI: 10.1134/s1022795419040057] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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Ostafiichuk SO. Genetic aspects of metabolic disorders in pregnant women with pathological weight gain. REGULATORY MECHANISMS IN BIOSYSTEMS 2019. [DOI: 10.15421/021941] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
Polymorphism of the leptin receptor gene (LEPR) has been shown to be linked to obesity-related metabolic markers and phenotype. Therefore, we hypothesized that the Gln233Arg LEPR polymorphism is related to metabolic changes in pregnancy and the risk of excessive gestational weight gain (GWG). A total of 97 pregnant women with a singleton gestation were enrolled from April 2016 until December 2018. Genetic variants of LEPR were analyzed by real-time polymerase chain reaction, leptin by enzyme-linked immunosorbent assay, lipid profile, and carbohydrate status were assessed in the first, and third trimesters of pregnancy. The recommended GWG was diagnosed in 34.0%, insufficient in 19.6%, and excessive in 46.4% patients. Statistical analysis revealed that 20.6% patients were with AA genotype, 50.5% – AG genotype, and 28.9% – GG genotype. The frequency of GG-alleles carriers of the LEPR Gln233Arg gene in the group of excessive GWG patients was 3 times higher compared to recommended GWG patients. Thus, the inheritance of pathological G-homozygotes increases the risk of excessive weight gain by 7 times, compared to carriers of the AA genotype. LEPR GG polymorphism was significantly associated with high levels of triglycerides, total cholesterol, lipoprotein low and very low density, and leptin compared to homozygous А-carriers in the third trimester of pregnancy. In pregnant women with GG polymorphism, the glucose level, insulin level, and HOMO-IR index were significantly increased compared to women with AA genotype in late pregnancy. In the group with excessive GWG, the presence of GG-alleles of the LEPR gene was accompanied by a higher level of hyperleptinemia, compared to carriers of AA-genotype. Inheritance of pathological G-homozygotes was associated with hyperlipidemia, leptin resistance with high leptin serum levels, and increased insulin resistance, which was especially manifested in excessive GWG. In our opinion, excessive GWG can be seen as a marker of the mother's genotype and genetic predisposition to the development of metabolic diseases after delivery.
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Mota-Zamorano S, Luna E, Garcia-Pino G, González LM, Gervasini G. Variability in the leptin receptor gene and other risk factors for post-transplant diabetes mellitus in renal transplant recipients. Ann Med 2019; 51:164-173. [PMID: 31046466 PMCID: PMC7857488 DOI: 10.1080/07853890.2019.1614656] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
Aim: Post-transplant diabetes mellitus (PTDM) is one of the main complications after kidney transplantation. It is known that leptin plays an important role in glucose metabolism and mutations in the leptin receptor gene (LEPR) are responsible for different complications in renal transplant recipients. We aimed to analyse the association of polymorphisms in LEPR with the development of PTDM in these patients. Methods: A total of 315 renal transplant recipients were genotyped for the Lys109Arg, Gln223Arg and Lys656Asn polymorphisms. The impact of these genetic variables together with other clinical and demographic parameters on PTDM risk was evaluated in a multivariate regression analysis. Results: The 223Arg variant showed a significant association with PTDM risk [OR = 3.26 (1.35-7.85), p = 0.009] after correcting for multiple testing. Carriers of this variant also showed higher BMI values (26.95 ± 4.23) than non-carriers (25.67 ± 4.43, p = 0.025). In addition, it was BMI at transplant and not the BMI increment in the first year after grafting that was associated with PTDM (p > 0.00001). Haplotype analyses did not reveal significant associations. Conclusions: Our result show, for the first time to our knowledge, that genetic variability in the LEPR may contribute significantly to the risk for PTDM in renal transplant recipients. KEY MESSAGES The LEPR Gln223Arg polymorphism significantly contributes to the development of PTDM in renal transplant recipients. The effect of the 223Arg variant on PTDM is strongly modulated by the age of the recipient. The 223Arg variant in the leptin receptor is related to higher BMI in renal transplant recipients.
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Affiliation(s)
- Sonia Mota-Zamorano
- a Department of Medical and Surgical Therapeutics, Division of Pharmacology, Medical School , University of Extremadura , Badajoz , Spain
| | - Enrique Luna
- b Service of Nephrology , Badajoz University Hospital , Badajoz , Spain
| | | | - Luz M González
- a Department of Medical and Surgical Therapeutics, Division of Pharmacology, Medical School , University of Extremadura , Badajoz , Spain
| | - Guillermo Gervasini
- a Department of Medical and Surgical Therapeutics, Division of Pharmacology, Medical School , University of Extremadura , Badajoz , Spain
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Su H, Rei N, Zhang L, Cheng J. Meta-analyses of IL1A polymorphisms and the risk of several autoimmune diseases published in databases. PLoS One 2018; 13:e0198693. [PMID: 29879187 PMCID: PMC5991676 DOI: 10.1371/journal.pone.0198693] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 05/23/2018] [Indexed: 01/04/2023] Open
Abstract
Background Based on published data, we aimed to quantitatively elucidate the possible genetic influence of rs17561 G/T and rs1800587 C/T polymorphisms of the IL1A (interleukin 1 alpha) gene in the susceptibility to several autoimmune diseases. Methods A series of meta-analyses were carried out. After database searching, we utilized our inclusion/exclusion criteria to screen and include the eligible studies. Passociation (P value of association test), Bonferroni-corrected Passociation value; false discovery rate (FDR)-corrected Passociation, ORs (odd ratios), and 95% CI (confidence interval) were generated to assess the magnitudes of genetic relationships. Results A total of 35 eligible articles were included. Pooled analysis data of both rs17561 G/T and rs1800587 C/T in the overall population indicated a negative association between cases of autoimmune diseases and negative controls (all Passociation>0.05, Bonferroni-corrected Passociation>0.05, FDR-corrected Passociation>0.05). Similar results were found in most subgroup analyses (all Passociation>0.05, Bonferroni-corrected Passociation>0.05, FDR-corrected Passociation>0.05), apart from the rs1800587 in the Graves’ disease subgroup, which showed an increased risk in some cases, compared with controls, under the models of allele T vs. C, carrier T vs. C, CT+TT vs. CC, and CT vs. CC (all Passociation<0.05, Bonferroni-corrected Passociation<0.05, FDR-corrected Passociation>0.05, OR>1). Conclusion Based on the available data, C/T genotype of the rs1800587 polymorphism within IL1A gene may be associated with an increased Graves’ disease risk. We did not see evidence regarding a positive role for rs1800587 or rs17561 in the risk of other autoimmune diseases, such as systemic sclerosis or rheumatoid arthritis. These conclusions still merit further data support and molecular exploration.
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Affiliation(s)
- Hang Su
- The Second Department of Orthopedics, Cangzhou Central Hospital, Cangzhou, China
- * E-mail:
| | - Na Rei
- The First Department of Gynecology, Cangzhou People’s Hospital, Cangzhou, China
| | - Lei Zhang
- The Second Department of Orthopedics, Cangzhou Central Hospital, Cangzhou, China
| | - Jiaxiang Cheng
- The Second Department of Orthopedics, Cangzhou Central Hospital, Cangzhou, China
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