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Obesity is associated with IL-6 gene polymorphisms rs1800795 and rs1800796 but not SOCS3 rs4969170. Mol Biol Rep 2023; 50:2041-2048. [PMID: 36538174 DOI: 10.1007/s11033-022-08129-y] [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: 08/19/2022] [Accepted: 11/15/2022] [Indexed: 03/14/2023]
Abstract
BACKGROUND An imbalance of inflammatory factors can stimulate obesity by inducing chronic inflammation in adipose tissue. Interleukin-6 (IL-6) is a cytokine with both inflammatory and anti-inflammatory functions. Suppressor of cytokine signaling 3 (SOCS3) acts as an inhibitor for a number of cytokine signals. The IL-6 and SOCS3 genes are known to be involved in lipid and energy metabolism, although it is unclear how these genes relate to obesity. The aim of this study is to determine whether the obesity risk is associated with the IL-6 (rs1800795, rs1800796) and SOCS3 (rs4969170) gene polymorphisms. METHODS AND RESULTS Based on their body mass index (BMI) scores, 185 people were determined, of whom 90 were from the control group and 95 were obese. Anthropometric measurements and biochemical parameters of the study subjects were documented during the examination. Genomic DNA isolation was performed from the blood samples of all participants. IL-6 (rs1800795, rs1800796) and SOCS3 (rs4969170) polymorphisms were detected by real-time quantitative polymerase chain reaction (qRT-PCR) from genomic DNA samples. The IL-6 rs1800795 and rs1800796 variants showed a significant difference between the control and obese groups (p = 0.027; p = 0.013). The SOCS3 rs4969170 variation did not substantially differ between the control and obese groups (p = 0.825). CONCLUSION In our study, IL-6 rs1800795(G/C) and rs1800796(G/C) polymorphisms appeared to be a risk factor for obesity. The C allele was associated with the obesity phenotypes. However, the SOCS3 rs4969170 (A/G) polymorphism was not linked to an increased risk of obesity. IL-6 polymorphisms may be new targets for obesity treatment.
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Circulating Extracellular Vesicles Impair Mesenchymal Stromal Cell Differentiation Favoring Adipogenic Rather than Osteogenic Differentiation in Adolescents with Obesity. Int J Mol Sci 2022; 24:ijms24010447. [PMID: 36613885 PMCID: PMC9820591 DOI: 10.3390/ijms24010447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 12/20/2022] [Accepted: 12/21/2022] [Indexed: 12/29/2022] Open
Abstract
Excess body weight has been considered beneficial to bone health because of its anabolic effect on bone formation; however, this results in a poor quality bone structure. In this context, we evaluated the involvement of circulating extracellular vesicles in the impairment of the bone phenotype associated with obesity. Circulating extracellular vesicles were collected from the plasma of participants with normal weight, as well as overweight and obese participants, quantified by flow cytometry analysis and used to treat mesenchymal stromal cells and osteoblasts to assess their effect on cell differentiation and activity. Children with obesity had the highest amount of circulating extracellular vesicles compared to controls. The treatment of mesenchymal stromal cells with extracellular vesicles from obese participants led to an adipogenic differentiation in comparison to vesicles from controls. Mature osteoblasts treated with extracellular vesicles from obese participants showed a reduction in differentiation markers in comparison to controls. Children with obesity who regularly performed physical exercise had a lower circulating extracellular vesicle amount in comparison to those with a sedentary lifestyle. This pilot study demonstrates how the high amount of circulating extracellular vesicles in children with obesity affects the bone phenotype and that physical activity can partially rescue this phenotype.
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Development of a genetic risk score for obesity predisposition evaluation. Mol Genet Genomics 2022; 297:1495-1503. [PMID: 35947209 DOI: 10.1007/s00438-022-01923-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2021] [Accepted: 06/25/2022] [Indexed: 10/15/2022]
Abstract
Obesity is a major public health issue resulting from an interaction between genetic and environmental factors. Genetic risk scores (GRSs) are useful to summarize the effects of many genetic variants on obesity risk. In this study, we aimed to assess the association of previously well-studied genetic variants with obesity and develop a genetic risk score to anticipate the risk of obesity development in the Iranian population. Among 968 participants, 599 (61.88%) were obese, and 369 (38.12%) were considered control samples. After genotyping, an initial screening of 16 variants associated with body mass index (BMI) was performed utilizing a general linear model (p < 0.25), and seven genetic variants were selected. The association of these variants with obesity was examined using a multivariate logistic regression model (p < 0.05), and finally, five variants were found to be significantly associated with obesity. Two gene score models (weighted and unweighted), including these five loci, were constructed. To compare the discriminative power of the models, the area under the curve was calculated using tenfold internal cross-validation. Among the studied variants, ADRB3 rs4994, FTO rs9939609, ADRB2 rs1042714, IL6 rs1800795, and MTHFR rs1801133 polymorphisms were significantly associated with obesity in the Iranian population. Both of the constructed models were significantly associated with BMI (p < 0.05) and the area under the mean curve of the weighted GRS and unweighted GRS were 70.22% ± 0.05 and 70.19% ± 0.05, respectively. Both GRSs proved to predict obesity and could potentially be utilized as genetic tools to assess the obesity predisposition in the Iranian population. Also, among the studied variants, ADRB3 rs4994 and FTO rs9939609 polymorphisms have the highest impacts on the risk of obesity.
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Melo APC, Teixeira HMP, Coelho RS, De Jesus TDS, Queiroz GA, Silva HDS, De Almeida YCF, Alcantara-Neves NM, De Matos SMA, D'innocenzo S, Silva RDCR, Lima Barreto M, Costa RDS, Pinto LC, Figueiredo CA. Variants in proinflammatory genes IL1RL1, IL1B and IRF4 are associated with overweight in a pediatric Brazilian population. Gene X 2022; 828:146478. [PMID: 35390444 DOI: 10.1016/j.gene.2022.146478] [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: 02/15/2022] [Revised: 03/30/2022] [Accepted: 04/01/2022] [Indexed: 11/04/2022] Open
Abstract
BACKGROUND Obesity is a chronic complex disease with great prevalence for children all over the world. Characterized for low-grade inflammation associated with several comorbidities such as resistance and type 2 diabetes mellitus (T2DM). OBJECTIVES To investigate whether genetic variants in IL10, IL1RL1, IL1B, IRF4, TNF, IL6, and IL33 genes are associated with being overweight in children. METHODS We performed the genotyping of 1004 children using Illumina 2.5 Human Omni bead chip, and association analysis on the genetic variants and the overweight through logistic regression adjusted for sex, age and components principal. RESULTS Of the seven genes analyzed, 16 SNVs significantly associated. Eleven variants in IL1RL1, two in IL1B and one in IRF4 genes increased overweight risk and two SNVs in IL1RL1 were associated with protection against overweight. The rs2287047-A was negatively associated (OR: 0.66, CI95%: 0.19-0.45) and had a reduced IL1RL1 expression in whole blood (p 0.033) in silico eQTL. The rs12203592-T, in IRF4, was positively associated with being overweight, and led to an increased gene expression in whole blood (p < 0.001) and adipose tissue (p < 0.001). CONCLUSION These results suggest that genetic variants in inflammatory genes may play an important role in the development of overweight in children.
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Affiliation(s)
| | | | - Raisa Santos Coelho
- Instituto de Ciências da Saúde, Universidade Federal da Bahia, Salvador, BA, Brazil
| | | | | | | | | | | | | | - Silvana D'innocenzo
- Instituto de Saúde Coletiva, Universidade Federal Da Bahia, Salvador, BA, Brazil
| | | | - Maurício Lima Barreto
- Instituto de Saúde Coletiva, Universidade Federal Da Bahia, Salvador, BA, Brazil; CIDACS - Centro de Integração De Dados E Conhecimentos Para Saúde, Fiocruz, Brazil
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Panera N, Mandato C, Crudele A, Bertrando S, Vajro P, Alisi A. Genetics, epigenetics and transgenerational transmission of obesity in children. Front Endocrinol (Lausanne) 2022; 13:1006008. [PMID: 36452324 PMCID: PMC9704419 DOI: 10.3389/fendo.2022.1006008] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/27/2022] [Indexed: 11/16/2022] Open
Abstract
Sedentary lifestyle and consumption of high-calorie foods have caused a relentless increase of overweight and obesity prevalence at all ages. Its presently epidemic proportion is disquieting due to the tight relationship of obesity with metabolic syndrome and several other comorbidities which do call for urgent workarounds. The usual ineffectiveness of present therapies and failure of prevention campaigns triggered overtime a number of research studies which have unveiled some relevant aspects of obesity genetic and epigenetic inheritable profiles. These findings are revealing extremely precious mainly to serve as a likely extra arrow to allow the clinician's bow to achieve still hitherto unmet preventive goals. Evidence now exists that maternal obesity/overnutrition during pregnancy and lactation convincingly appears associated with several disorders in the offspring independently of the transmission of a purely genetic predisposition. Even the pre-conception direct exposure of either father or mother gametes to environmental factors can reprogram the epigenetic architecture of cells. Such phenomena lie behind the transfer of the obesity susceptibility to future generations through a mechanism of epigenetic inheritance. Moreover, a growing number of studies suggests that several environmental factors such as maternal malnutrition, hypoxia, and exposure to excess hormones and endocrine disruptors during pregnancy and the early postnatal period may play critical roles in programming childhood adipose tissue and obesity. A deeper understanding of how inherited genetics and epigenetics may generate an obesogenic environment at pediatric age might strengthen our knowledge about pathogenetic mechanisms and improve the clinical management of patients. Therefore, in this narrative review, we attempt to provide a general overview of the contribution of heritable genetic and epigenetic patterns to the obesity susceptibility in children, placing a particular emphasis on the mother-child dyad.
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Affiliation(s)
- Nadia Panera
- Unit of Molecular Genetics of Complex Phenotypes, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Claudia Mandato
- Pediatrics Section, Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, Salermo, Italy
- *Correspondence: Anna Alisi, ; Claudia Mandato,
| | - Annalisa Crudele
- Unit of Molecular Genetics of Complex Phenotypes, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Sara Bertrando
- Pediatrics Clinic, San Giovanni di Dio e Ruggi d’Aragona University Hospital, Salerno, Italy
| | - Pietro Vajro
- Pediatrics Section, Department of Medicine, Surgery and Dentistry “Scuola Medica Salernitana”, University of Salerno, Baronissi, Salermo, Italy
| | - Anna Alisi
- Unit of Molecular Genetics of Complex Phenotypes, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
- *Correspondence: Anna Alisi, ; Claudia Mandato,
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Maculewicz E, Antkowiak B, Antkowiak O, Mastalerz A, Białek A, Cywińska A, Borecka A, Humińska-Lisowska K, Garbacz A, Lorenz K, Szarska E, Michałowska-Sawczyn M, Dziuda Ł, Cięszczyk P. IL-6 Polymorphisms Are Not Related to Obesity Parameters in Physically Active Young Men. Genes (Basel) 2021; 12:genes12101498. [PMID: 34680892 PMCID: PMC8535757 DOI: 10.3390/genes12101498] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Revised: 09/13/2021] [Accepted: 09/23/2021] [Indexed: 12/12/2022] Open
Abstract
Interleukin 6 (IL-6) is a cytokine with both pro- and anti-inflammatory actions, but is also considered as a "metabolic hormone" involved in immune responses, affecting glucose, protein and lipid metabolism. It has been proposed to be related to obesity, but various results have been presented. Thus, in this study, the very homogenous population of young, male military professionals, living in the same conditions involving high physical activity, has been selected to avoid the influence of environmental factors. The subjects were divided into groups depending on the obesity parameters BMI (body mass index) and fat percentage (fat%), and the following IL-6 SNPs (Single Nucleotide Polymorphisms) were analyzed: rs1800795, rs1800796 and rs13306435. No relation was found between obesity parameters and IL-6 polymorphisms rs1800795, rs1800796 and rs13306435. It may be postulated that even if a genetic predisposition involves IL-6 genes, this effect in individuals with obesity of a low grade is minor, or can be avoided or at least markedly reduced by changes in lifestyle.
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Affiliation(s)
- Ewelina Maculewicz
- Faculty of Physical Education, Jozef Pilsudski University of Physical Education in Warsaw, 00-809 Warsaw, Poland; (E.M.); (A.M.); (K.L.)
- Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland; (B.A.); (O.A.); (A.B.); (E.S.)
| | - Bożena Antkowiak
- Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland; (B.A.); (O.A.); (A.B.); (E.S.)
| | - Oktawiusz Antkowiak
- Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland; (B.A.); (O.A.); (A.B.); (E.S.)
| | - Andrzej Mastalerz
- Faculty of Physical Education, Jozef Pilsudski University of Physical Education in Warsaw, 00-809 Warsaw, Poland; (E.M.); (A.M.); (K.L.)
| | - Agnieszka Białek
- Institute of Genetics and Animal Biotechnology of the Polish Academy of Sciences, Jastrzębiec, 05-552 Magdalenka, Poland;
| | - Anna Cywińska
- Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Torun, 87-100 Torun, Poland;
| | - Anna Borecka
- Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland; (B.A.); (O.A.); (A.B.); (E.S.)
| | - Kinga Humińska-Lisowska
- Faculty of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland; (K.H.-L.); (M.M.-S.)
| | | | - Katarzyna Lorenz
- Faculty of Physical Education, Jozef Pilsudski University of Physical Education in Warsaw, 00-809 Warsaw, Poland; (E.M.); (A.M.); (K.L.)
| | - Ewa Szarska
- Military Institute of Hygiene and Epidemiology, 01-163 Warsaw, Poland; (B.A.); (O.A.); (A.B.); (E.S.)
| | - Monika Michałowska-Sawczyn
- Faculty of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland; (K.H.-L.); (M.M.-S.)
| | - Łukasz Dziuda
- Military Institute of Aviation Medicine, 01-755 Warszawa, Poland;
| | - Paweł Cięszczyk
- Faculty of Physical Education, Gdansk University of Physical Education and Sport, 80-336 Gdansk, Poland; (K.H.-L.); (M.M.-S.)
- Correspondence: ; Tel.: +48-505-769-630
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Hashad IM, Nosseir H, Shaban GM, Abdel Rahman MF, Gad MZ. Is there a correlation between -174(G/C) polymorphism of IL-6 gene and the incidence of acute myocardial infarction? JOURNAL OF GENETIC ENGINEERING AND BIOTECHNOLOGY 2021; 19:139. [PMID: 34542791 PMCID: PMC8452807 DOI: 10.1186/s43141-021-00243-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Accepted: 09/05/2021] [Indexed: 12/16/2022]
Abstract
Background Cardiovascular disease (CVD) remains the major cause of death worldwide. Most CVD can be prevented by addressing risk factors. Acute myocardial infarction (AMI) is an inflammatory disorder characterized by changes in several cytokines including the interleukins (ILs). Studies are running to evaluate the genetic variation in the inflammatory system and their influence on the risk factors for CVD aiming for future prevention of this global disease. The aim of the current study was too investigate the association of -174 (G/C) IL-6 polymorphism with the incidence of AMI in a representative sector of the Egyptian population and to examine the contribution of IL-6, as a biomarker, in the pathogenesis of AMI. Genotyping of -174 (G/C) IL-6 polymorphism was done by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) while IL-6 levels were assayed by ELISA. Results The genotype distribution of -174 (G/C) IL-6 gene was not significantly different between the control subjects (GG 81.7%, GC 16.3%, CC 1.9%) and the AMI patients (GG 79%, GC 19%, CC 2%).The serum levels of IL-6 were significantly elevated in the AMI patients in comparison to the control subjects (P < 0.0001). Conclusions There is no significant association of -174(G/C) polymorphism in the promoter sequence of IL-6 and the incidence of AMI in the examined sample of Egyptian population. Elevated levels of serum IL-6 confirmed the relationship between inflammation and the incidence of AMI.
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Affiliation(s)
- Ingy M Hashad
- Clinical Biochemistry Unit, Faculty of Pharmacy and Biotechnology, the German University in Cairo, Cairo, Egypt
| | - Habiba Nosseir
- Clinical Biochemistry Unit, Faculty of Pharmacy and Biotechnology, the German University in Cairo, Cairo, Egypt
| | | | - Mohamed F Abdel Rahman
- Department of Biology and Biochemistry, School of Life and Medical Sciences, University of Hertfordshire Hosted by Global Academic Foundation, Cairo, Egypt.
| | - Mohamed Z Gad
- Clinical Biochemistry Unit, Faculty of Pharmacy and Biotechnology, the German University in Cairo, Cairo, Egypt
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8
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Genetic polymorphisms associated with obesity in the Arab world: a systematic review. Int J Obes (Lond) 2021; 45:1899-1913. [PMID: 34131278 PMCID: PMC8380539 DOI: 10.1038/s41366-021-00867-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Revised: 04/27/2021] [Accepted: 05/18/2021] [Indexed: 02/05/2023]
Abstract
BACKGROUND Obesity, one of the most common chronic health conditions worldwide, is a multifactorial disease caused by complex genetic and environmental interactions. Several association studies have revealed a considerable number of candidate loci for obesity; however, the genotype-phenotype correlations remain unclear. To date, no comprehensive systematic review has been conducted to investigate the genetic risk factors for obesity among Arabs. OBJECTIVES This study aimed to systematically review the genetic polymorphisms that are significantly associated with obesity in Arabs. METHODS We searched four literature databases (PubMed, Science Direct, Scopus, and Google Scholar) from inception until May 2020 to obtain all reported genetic data related to obesity in Arab populations. Quality assessment and data extraction were performed individually by three investigators. RESULTS In total, 59 studies comprising a total of 15,488 cases and 9,760 controls were included in the systematic review. A total of 76 variants located within or near 49 genes were reported to be significantly associated with obesity. Among the 76 variants, two were described as unique to Arabs, as they have not been previously reported in other populations, and 19 were reported to be distinctively associated with obesity in Arabs but not in non-Arab populations. CONCLUSIONS There appears to be a unique genetic and clinical susceptibility profile of obesity in Arab patients.
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Campello CP, Pellizzer EP, Vasconcelos BCDE, Moraes SLD, Lemos CAA, Muniz MTC. Evaluation of IL-6 levels and +3954 polymorphism of IL-1β in burning mouth syndrome: A systematic review and meta-analysis. J Oral Pathol Med 2020; 49:961-968. [PMID: 32274841 DOI: 10.1111/jop.13018] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2019] [Revised: 02/29/2020] [Accepted: 03/29/2020] [Indexed: 12/30/2022]
Abstract
This study evaluated IL-6 salivary levels as well as the +3954 polymorphism of IL-1β in patients with burning mouth syndrome and healthy individuals, through case-control studies. This systematic review and meta-analysis followed the Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines. We conducted this research in PubMed/MEDLINE, Cochrane Library and Web of Science databases. The risk of bias was measured based in the Newcastle-Ottawa Scale. Researches with a group of patients with burning mouth syndrome and a control group in which the presence of the +3954 polymorphism of IL-1β and/ or IL-6 salivary levels through non-stimulated saliva were evaluated to detect if this interleukin concentrations are increased in patients and if the polymorphism is a risk factor for this syndrome. We identified seven studies with total of 440 participants, 229 patients with burning mouth syndrome and 211 healthy controls, ages 24-84 years old. The female gender was predominant. Patients in the majority of studies did not present increased levels of IL-6 and the +3954 polymorphism of IL-1β is not a risk factor for this syndrome. A few studies researched biomarkers in this pathology and more investigations are required not only to identify salivary levels and the polymorphism evaluated, but also other interleukins and polymorphisms in order to clarify the etiopathogenesis of this syndrome as well as for propose new diagnostic methods and treatments.
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Affiliation(s)
- Camilla Porto Campello
- Postgraduate Program in Biotechnology, Rede Nordeste de Biotecnologia- RENORBIO, UFRPE/UPE, Recife, Brazil
| | - Eduardo Piza Pellizzer
- Department of Dental Materials and Prosthodontics, Dental School, Universidade Estadual Paulista- UNESP, Araçatuba, Brazil
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Alharbi KK, Al-Sheikh YA, Alsaadi MM, Mani B, Udayaraja GK, Kohailan M, Ali Khan I. Screening for obesity in the offspring of first-cousin consanguineous couples: A Phase-I study in Saudi Arabia. Saudi J Biol Sci 2019; 27:242-246. [PMID: 31889843 PMCID: PMC6933162 DOI: 10.1016/j.sjbs.2019.09.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 08/26/2019] [Accepted: 09/01/2019] [Indexed: 01/19/2023] Open
Abstract
Consanguineous or cousin marriages are very common in Saudi Arabia. However, owing to limited studies and insufficient knowledge about genetic diseases/disorders, many couples are unaware of the increased health risks for their offspring. Among the inherited and complex diseases from parents’ consanguinity, obesity is common; therefore, we examined the prevalence of obesity in the offspring of first-cousin consanguineous couples in Saudi Arabia. In this questionnaire-based study, 657 individuals (mean age = 18.7 ± 10.2 years; age range = 2–65 years) who were residing in Riyadh, Saudi Arabia participated. Among them, almost 90% were native Saudis. Participants mean body mass index (BMI) was 24.5 ± 9.1 kg/m2. Sex- stratified demographic details confirmed a significant association between age and BMI (p < .001). We confirmed that adolescents and adults were more prone to develop obesity. Adults and non-Saudi participants were three times more likely to develop obesity if they had first-cousin consanguineous parents than those who did not. Of the 30% of participants who were obese, 100 will be selected for Phase II, in which we plan to perform exome sequencing.
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Affiliation(s)
- Khalid Khalaf Alharbi
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Yazeed A Al-Sheikh
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Muslim M Alsaadi
- Department of Pediatrics, College of Medicine, King Saud University, Riyadh, Saudi Arabia
| | | | | | | | - Imran Ali Khan
- Department of Clinical Laboratory Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
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Gholami M, Sharifi F, Shahriari S, Khoshnevisan K, Larijani B, Amoli MM. Association of interleukin-6 polymorphisms with obesity: A systematic review and meta-analysis. Cytokine 2019; 123:154769. [PMID: 31472475 DOI: 10.1016/j.cyto.2019.154769] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 05/04/2019] [Accepted: 06/30/2019] [Indexed: 01/09/2023]
Abstract
Obesity is a common metabolic disorder with increasing trend all around the world. Owing to the role of pro-inflammatory cytokines on obesity, we aimed to investigate the role of interleukin-6 (IL-6) polymorphisms on risk of obesity. Electronic literatures were searched in Web of Science, PubMed, Embase, and Scopus. The references of relevant reviews and included studies were also manually checked. All types of observational studies from 1 January 1992 to 28 February 2018 were included. Odds ratio (OR) was estimated by fixed and random effect model. Subgroup analysis was carried out based on age statues. Pooling analysis of eligible studies have been considered for rs2069845 and rs1800796, and no significant results were observed. Minor allele of IL-6 rs1800797polymorphism decreased the risk of obesity/overweight in allelic 0.74 (0.59-0.92), dominant 0.65 (0.49-0.85), and over-dominant 0.66 (0.51-0.87) models. Fourteen eligible studies were included for rs1800795. According to BMI, C allele showed increased risk of obesity in genetic models containing homozygote model 1.47 (1.02-2.12) for body mass index (BMI) ≥ 25 vs. BMI < 25, recessive model 1.32 (1.07-1.63) for BMI ≥ 30 vs. BMI < 25, and homozygote model 1.35 (1.10-1.66) for BMI ≥ 30 vs. BMI < 30. In overall definition of obesity more significant results were observed, including homozygote model in obese vs. normal 1.71 (1.14-2.56). Similarly, subgroups analysis revealed additional significant results. Minor alleles of rs1800795 raised and rs1800797 reduced the risk of obesity, while rs1800796 and rs2069845 may not be associated. However, more observational studies are recommended to confirm these results.
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Affiliation(s)
- Morteza Gholami
- Obesity and Eating Habits Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran; Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Farshad Sharifi
- Elderly Health Research Center, Endocrinology and Metabolism Population Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Shadab Shahriari
- Metabolic Disorders Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Kamyar Khoshnevisan
- Biosensor Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Bagher Larijani
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mahsa M Amoli
- Metabolic Disorders Research Center, Endocrinology and Metabolism Molecular-Cellular Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran.
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El-Shaheed AA, Mahfouz NN, Moustafa RSI, Elabd MA. Alarming Eating Behaviours among Adolescents in Egypt. Open Access Maced J Med Sci 2019; 7:2189-2193. [PMID: 31456850 PMCID: PMC6698109 DOI: 10.3889/oamjms.2019.583] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Revised: 06/12/2019] [Accepted: 06/23/2019] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND: Adolescence is a phase of rapid growth and increased nutritional needs. It includes the stressful burden of pubertal changes, both physically and psychologically. Moreover, it is associated with the utmost need for independence and identity formation. An adolescent finds a great way to practice taking their own decisions by making personal food choices. But unfortunately, wrong dietary choices lead to unsatisfactory nutritional status. AIM: To investigate the prevalence of six eating behaviours among adolescents. SUBJECTS AND METHODS: A case-control study was conducted on ninety Egyptian adolescents from 10 to 18 years old. Anthropometric measurements were taken. Body Mass Index (BMI) was calculated. The cases were forty-five children with body mass index ≥ 85th percentile. The control group involved forty-five of matched peers with body mass index < 85th centile. A questionnaire form was constructed according to local customs in Egypt. RESULTS: Two unhealthy behaviours were mostly found in our study group. The first and the predominant one was multitasking while eating practised by 92.1% of candidates and showing the equal distribution in both groups. The second was skipping breakfast and was adopted by 51.7% of the study group with a significantly higher distribution in the < 85th centile group. CONCLUSION: Faulty eating is a behaviour encountered in adolescence irrespective to BMI category. Thus, a normal BMI does not reflect healthy dietary behaviours.
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Affiliation(s)
- Azza Abd El-Shaheed
- Department of Child Health, National Research Centre (33rd El Bohouth st, former El Tahrir St, Dokki, PO 12622), Egypt; Medical Research Centre of Excellence (MRCE), Giza, Egypt
| | - Nermine N Mahfouz
- Department of Child Health, National Research Centre (33rd El Bohouth st, former El Tahrir St, Dokki, PO 12622), Egypt; Medical Research Centre of Excellence (MRCE), Giza, Egypt
| | - Rehab S I Moustafa
- Department of Child Health, National Research Centre (33rd El Bohouth st, former El Tahrir St, Dokki, PO 12622), Egypt; Medical Research Centre of Excellence (MRCE), Giza, Egypt
| | - Mona A Elabd
- Department of Child Health, National Research Centre (33rd El Bohouth st, former El Tahrir St, Dokki, PO 12622), Egypt; Medical Research Centre of Excellence (MRCE), Giza, Egypt
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Hu M, Yu Z, Luo D, Zhang H, Li J, Liang F, Chen R. Association between -174G>C polymorphism in the IL-6 promoter region and the risk of obesity: A meta-analysis. Medicine (Baltimore) 2018; 97:e11773. [PMID: 30113463 PMCID: PMC6112883 DOI: 10.1097/md.0000000000011773] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Many researchers have suggested that the -174G>C polymorphism in the interleukin-6 (IL-6) promoter region contributes to the risk of obesity; however, this hypothesis is still inconclusive. Therefore, we conducted a meta-analysis to combine the data from several studies to arrive at a conclusion regarding the association between -174G>C polymorphism and the risk of obesity. METHODS The PubMed and Embase databases were searched up to February 20, 2018. The odds ratios (ORs) and 95% confidence intervals (95% CIs) were calculated using a random-effects model. Subgroup analysis and sensitivity were also performed. RESULTS Ten eligible studies involving 7210 cases were performed to identify the association strength. The association strength was measured by the ORs and 95% CIs. By pooling the eligible studies, we found a significant association between the -174G>C polymorphism and obesity risk (C vs G: OR = 1.37; 95% CI, 1.08-1.74; Pheterogeneity < .01). Overall, individuals with the variant CC (OR = 1.58; 95% CI, 1.09-2.28; Pheterogeneity < 0.01) and GC/CC (OR = 1.61; 95% CI, 1.13-2.29; Pheterogeneity < .01) were associated with a significantly increased risk of obesity. CONCLUSION The meta-analysis results suggested that the polymorphism -174G>C in the IL-6 promoter region was associated with a significantly increased risk of obesity.
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Affiliation(s)
- Man Hu
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College
| | - Zhaomin Yu
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College
| | - Dan Luo
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College
| | - Haiming Zhang
- Department of Oncology, Integrated Traditional Chinese and Western Medicine, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei
| | - Jinxiao Li
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College
| | - Fengxia Liang
- Department of Acupuncture and Moxibustion, Hubei University of Chinese Medicine
| | - Rui Chen
- Department of Integrated Traditional Chinese and Western Medicine, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, China
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