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Gan C, Zhang Y, Zhang X, Huang Q, Guo X. Association of Apolipoprotein E Gene Polymorphism with Type 2 Diabetic Nephropathy in the Southern Chinese Population. Int J Gen Med 2023; 16:5549-5558. [PMID: 38034901 PMCID: PMC10683650 DOI: 10.2147/ijgm.s440103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 11/12/2023] [Indexed: 12/02/2023] Open
Abstract
Background Common polymorphisms within the apolipoprotein E (APOE) gene are rs429358 and rs7412, which result in three major alleles (ɛ2, ɛ3, and ɛ4) and six genotypes (E2/E2, E2/E3, E3/E3, E3/E4, E4/E4, and E2/E4). Although APOE gene polymorphisms have been suggested to be associated with the development of diabetic nephropathy (DN), their potential association remains unclear in different regions. This study aims to unveil the genetic effects of APOE gene polymorphisms on DN susceptibility and serum lipid profiles in southern Chinese population. Methods A total of 306 DN patients and 483 type 2 diabetic patients as controls were included in the study. The APOE gene polymorphisms were analyzed by polymerase chain reaction (PCR) microarray gene chip. Relevant medical records and information of these participants were collected. Results There were statistically significant differences (p < 0.05) in gender, SBP, hypertension, hyperuricemia, UTP, TG and HDL-C between DN patients and controls. DN patients exhibited a higher frequency of the ε2 allele and E2/E3 genotype than controls (p < 0.001). Logistic regression analysis indicated that the ε2 allele and E2/E3 genotype were independent risk factors (adjusted OR: 3.237, 95% CI: 1.789-5.854, p < 0.001; adjusted OR: 3.453, 95% CI: 1.873-6.368, p < 0.001), while the ε3 allele or E3/E3 genotype might serve as protective role (adjusted OR: 0.395, 95% CI: 0.255-0.612, p < 0.001) for development of DN. Conclusion Our study indicates a correlation between APOE polymorphisms and DN in the southern Chinese Hakka population. Specifically, individuals carrying the APOE ε2 allele and E2/E3 genotype are at a higher risk of developing DN. Conversely, those with the APOE ε3 allele and E3/E3 genotype have a lower risk of DN in southern Chinese population.
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Affiliation(s)
- Caiyan Gan
- Research Experimental Center, Meizhou People’s Hospital, Meizhou, People’s Republic of China
- Guangdong Engineering Technological Research Center of Clinical Molecular Diagnosis and Antibody Drugs, Meizhou, People’s Republic of China
- Guangdong Provincial Engineering and Technological Research Center for Molecular Diagnostics of Cardiovascular Diseases, Meizhou, People’s Republic of China
| | - Yinmei Zhang
- Research Experimental Center, Meizhou People’s Hospital, Meizhou, People’s Republic of China
- Guangdong Engineering Technological Research Center of Clinical Molecular Diagnosis and Antibody Drugs, Meizhou, People’s Republic of China
- Guangdong Provincial Engineering and Technological Research Center for Molecular Diagnostics of Cardiovascular Diseases, Meizhou, People’s Republic of China
| | - Xianyan Zhang
- Clinical Laboratory Center, Meizhou People’s Hospital, Meizhou, People’s Republic of China
| | - Qionghui Huang
- Research Experimental Center, Meizhou People’s Hospital, Meizhou, People’s Republic of China
- Guangdong Engineering Technological Research Center of Clinical Molecular Diagnosis and Antibody Drugs, Meizhou, People’s Republic of China
- Guangdong Provincial Engineering and Technological Research Center for Molecular Diagnostics of Cardiovascular Diseases, Meizhou, People’s Republic of China
| | - Xuemin Guo
- Research Experimental Center, Meizhou People’s Hospital, Meizhou, People’s Republic of China
- Guangdong Engineering Technological Research Center of Clinical Molecular Diagnosis and Antibody Drugs, Meizhou, People’s Republic of China
- Guangdong Provincial Engineering and Technological Research Center for Molecular Diagnostics of Cardiovascular Diseases, Meizhou, People’s Republic of China
- Clinical Laboratory Center, Meizhou People’s Hospital, Meizhou, People’s Republic of China
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Dai J, Yu M, Chen H, Chai Y. Association Between Serum 25-OH-Vitamin D and Diabetic Foot Ulcer in Patients With Type 2 Diabetes. Front Nutr 2020; 7:109. [PMID: 32984392 PMCID: PMC7493196 DOI: 10.3389/fnut.2020.00109] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Accepted: 06/15/2020] [Indexed: 12/16/2022] Open
Abstract
Background: Vitamin D deficiency has been associated with an increased risk in several diabetic complications. We aimed to evaluate the association between vitamin D and diabetic foot ulcer (DFU) in patients with type 2 diabetes. Methods: Fifty one patients were included in the study and divided into two groups for study of vitamin D, cholesterol, and triglycerides in blood serum on DFU. The association between vitamin D and DFU was measured by binary logistic regression analysis. The cut point of vitamin D for DFU was assessed by the receiver operating characteristic curve. Results: Levels of 25-OH-vitamin D were lower in patients with DFU than in DM group (P < 0.0001). The AUC of 25-OH-vitamin D was 0.8254 and had an optimal cut point value (13.68 ng/ml) for the identification of DFU, with a sensitivity of 90% and a specificity of 66.67% in all patients. Multivariate logistic regression analysis indicated that the significant risk factors included 25-OH-vitamin D level (P = 0.001, OR = 0.618) and HDL-C level (P = 0.038, OR = 0.012). Conclusion: Low serum 25-OH-vitamin D level was associated with DFU. This indication was more specific than cholesterol and triglycerides levels.
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Affiliation(s)
- Jiezhi Dai
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Min Yu
- Department of Vascular Surgery, Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Hua Chen
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
| | - Yimin Chai
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai, China
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Zhou T, Li H, Zhong H, Zhong Z, Lin S. Association of apoE gene polymorphisms with lipid metabolism in renal diseases. Afr Health Sci 2020; 20:1368-1381. [PMID: 33402986 PMCID: PMC7751546 DOI: 10.4314/ahs.v20i3.43] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND AND OBJECTIVES Apolipoprotein E (apoE) plays a central role in the metabolism and homeostasis of lipids. ApoE gene encodes three major isoforms: ε2, ε3 a nd ε4 forming six phenotypes: E2E2, E2E3, E2E4, E3E3, E3E3 and E4E4. Disorders of the lipid metabolism and the homeostasis are frequently coexist in renal diseases. The association between gene polymorphisms of apoE and lipid metabolism were not consistent. This meta-analysis was performed to assess the association between gene polymorphisms of apoE and lipid metabolism in renal diseases. METHODS A pre-defined literatures search and selection of eligible relevant investigations were performed to extract and collect data from electronic databases. RESULTS Sixteen articles were enrolled for the analysis of association between apoE gene polymorphisms and lipid metabolism. Subjects with E3E4 had a higher total cholesterol (TC) than those with E3E3, and subjects with E2E3 had a lower TC than those with E3E3. Subjects with ε2, had a lower TC than those with ε3 or ε4, and subjects with ε4 had a higher TC than those with, ε3. Subjects with E2E2, E2E3 or E4E4 had a higher triglyceride (TG) than those with E3E3. Subjects with ε4 had a higher TG than those with ε3. Subjects with ε2, had a higher level of TG than those with non-ε2. Subjects with E3E4 had a slightly lower high-density lipoprotein (HDL) than those with E3E3. E3E4 appeared to be associated with lower levels of HDL. Subjects with E2E2, E2E3 had a notably lower low-density lipoprotein (LDL) than those with E3E3. Subjects with ε2, had a lower LDL than those with ε3 or ε4 ApoE gene polymorphisms were not associated with very low-density lipoprotein, and lipoprotein (a) [Lp(a)]. Subjects with E2E3 or E2E4 had higher apoE levels than those with E3E3, and subjects with E4E4 had lower apoE levels than those with E3E3. CONCLUSION ApoE gene polymorphisms are associated with the expression of TC, TG HDL, LDL, Lp(a) or apoE.
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Affiliation(s)
- Tianbiao Zhou
- Department of Nephrology, the Second Affiliated Hospital of Shantou University Medical College, 515041, Shantou, China
| | - Hongyan Li
- Department of Nephrology, Huadu District People's Hospital, Southern Medical University, Guangzhou, China
| | - Hongzhen Zhong
- Department of Nephrology, the Second Affiliated Hospital of Shantou University Medical College, 515041, Shantou, China
| | - Zhiqing Zhong
- Department of Nephrology, the Second Affiliated Hospital of Shantou University Medical College, 515041, Shantou, China
| | - Shujun Lin
- Department of Nephrology, the Second Affiliated Hospital of Shantou University Medical College, 515041, Shantou, China
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Shi J, Cheng Z, Qiu S, Cui H, Gu Y, Zhao Q, Ren Y, Zhang H, Sun H, Liu Y, Li Y, Qiao Y, Hu Y, Liu Y, Cheng Y. ε2 allele and ε2-involved genotypes (ε2/ε2, ε2/ε3, and ε2/ε4) may confer the association of APOE genetic polymorphism with risks of nephropathy in type 2 diabetes: a meta-analysis. Lipids Health Dis 2020; 19:136. [PMID: 32534589 PMCID: PMC7293775 DOI: 10.1186/s12944-020-01307-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Accepted: 06/02/2020] [Indexed: 01/11/2023] Open
Abstract
Background Diabetic nephropathy (DN) contributes to end-stage renal failure. Microvascular injury resulted from reactive oxygen species is implicated in the pathogenesis of DN. Genetic polymorphism of Apolipoprotein E (APOE) influences the antioxidative properties of the protein. The relationship of APOE polymorphism with the risks of nephropathy in type 2 diabetes (T2DN) remains elusive. Methods An up-to-date meta-analysis was conducted on the basis of studies selected from PubMed, WanFang database, Embase, Vip database, Web of Science, Scopus, and CNKI database. Results A total of 33 studies conferring 3266 cases and 3259 controls were selected on the basis of criteria of inclusion and exclusion in this meta-analysis. For APOE alleles, the pooled odds ratio (OR) of ε2 vs. ε3 was 1.89 (95% confidence intervals [95% CI]: 1.49–2.38, P < 0.0001). With regard to APOE genotypes, ε2/ε2, ε2/ε3, and ε2/ε4 increased the risk of T2DN (ε2/ε2 vs. ε3/ε3: OR = 2.32, 95% CI: 1.52–3.56, P = 0.0001; ε2/ε3 vs. ε3/ε3: OR = 1.97, 95% CI: 1.50–2.59, P<0.0001; ε2/ε4 vs. ε3/ε3: OR = 1.69, 95% CI: 1.18–2.44, P = 0.0046). Conclusions This meta-analysis found that the APOE ε2 allele and the ε2-involved genotypes (ε2/ε2, ε2/ε3, and ε2/ε4) are the risk factors of T2DN.
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Affiliation(s)
- Jikang Shi
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, Jilin, China
| | - Zhaorui Cheng
- Class of Clinical Medicine of English Teaching, Grade 2016, Ottawa-Shanghai Joint School of Medicine, Shanghai Jiao Tong University, Shanghai, 200023, China
| | - Shuang Qiu
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, Jilin, China
| | - Heran Cui
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, Jilin, China
| | - Yulu Gu
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, Jilin, China
| | - Qian Zhao
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, Jilin, China
| | - Yaxuan Ren
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, Jilin, China
| | - He Zhang
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, Jilin, China
| | - Helin Sun
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, Jilin, China
| | - Yunkai Liu
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, 130021, Jilin, China
| | - Yong Li
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, Jilin, China
| | - Yichun Qiao
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, Jilin, China
| | - Yueyang Hu
- Department of children & adolescence health, School of Public Health, Jilin University, Changchun, 130021, Jilin, China
| | - Yawen Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, 130021, Jilin, China.
| | - Yi Cheng
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, 130021, Jilin, China.
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Atageldiyeva KK, Nemr R, Echtay A, Racoubian E, Sarray S, Almawi WY. Apolipoprotein E genetic polymorphism influence the susceptibility to nephropathy in type 2 diabetes patients. Gene 2019; 715:144011. [DOI: 10.1016/j.gene.2019.144011] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2019] [Revised: 07/12/2019] [Accepted: 07/24/2019] [Indexed: 01/17/2023]
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Jiang Y, Ma L, Han C, Liu Q, Cong X, Xu Y, Zhao T, Li P, Cao Y. Effects of Apolipoprotein E Isoforms in Diabetic Nephropathy of Chinese Type 2 Diabetic Patients. J Diabetes Res 2017; 2017:3560920. [PMID: 28326331 PMCID: PMC5343254 DOI: 10.1155/2017/3560920] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/10/2016] [Revised: 01/02/2017] [Accepted: 01/29/2017] [Indexed: 01/19/2023] Open
Abstract
Diabetic nephropathy (DN) is one of the major chronic complications of diabetes. Genetic polymorphism of Apolipoprotein E (ApoE) has been proposed to participating in DN. The purpose of the study was to evaluate the relationship between ApoE genetic polymorphism and the presence of DN in Chinese type 2 diabetic patients. We studied 845 diabetic patients who were divided into DN group (n = 429) and control group (n = 416). ApoE genotype was determined by ApoE genotyping chip and the plasmatic biochemical characterization was performed on all subjects. There were differences (P < 0.001) in HbA1c, creatinine, and urinary albumin between the two groups. The ApoE ε2 allelic frequency was 7.69% in DN group versus 3.49% in control group (OR = 2.22, 95% CI = 1.41-3.47, and P < 0.05), as expected, ApoE E2/E2 and E2/E3 genotype frequency were higher in DN group (13.75% versus 6.49%, P < 0.05). The ApoE ε4 allelic frequency was 7.93% in DN group versus 11.54% in control group (OR = 0.70, 95% CI = 0.50-0.97, and P < 0.05), and DN group presented a lower frequency of ApoE E3/E4 and E4/E4 genotype frequency (14.91% versus 19.96%, P < 0.05). These results suggest ApoE ε2 allele may be a risk factor; however ApoE ε4 allele may play a protective role of DN in Chinese type 2 diabetic patients.
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Affiliation(s)
- YongWei Jiang
- Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Liang Ma
- Graduate School of Peking Union Medical College, Beijing, China
- Beijing Key Lab Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Science, China-Japan Friendship Hospital, Beijing, China
| | - ChengWu Han
- Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Qian Liu
- Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - Xiao Cong
- Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
| | - YaPing Xu
- Department of Pathophysiology, Institute of Clinical Medical Science, China-Japan Friendship Hospital, Beijing, China
| | - TingTing Zhao
- Beijing Key Lab Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Science, China-Japan Friendship Hospital, Beijing, China
| | - Ping Li
- Graduate School of Peking Union Medical College, Beijing, China
- Beijing Key Lab Immune-Mediated Inflammatory Diseases, Institute of Clinical Medical Science, China-Japan Friendship Hospital, Beijing, China
| | - YongTong Cao
- Clinical Laboratory, China-Japan Friendship Hospital, Beijing, China
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Variation in Type 2 Diabetes-Related Phenotypes among Apolipoprotein E-Deficient Mouse Strains. PLoS One 2015; 10:e0120935. [PMID: 25946019 PMCID: PMC4422683 DOI: 10.1371/journal.pone.0120935] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2014] [Accepted: 02/09/2015] [Indexed: 01/12/2023] Open
Abstract
We recently have found that apolipoprotein E-deficient (Apoe(-/-)) mice with the C57BL/6 background develop type 2 diabetes when fed a Western diet for 12 weeks. In the present study we constructed multiple Apoe(-/-) mouse strains to find diabetes-related phenotyptic variations that might be linked to atherosclerosis development. Evaluation of both early and advanced lesion formation in aortic root revealed that C57BL/6, SWR/J, and SM/J Apoe(-/-) mice were susceptible to atherosclerosis and that C3H/HeJ and BALB/cJ Apoe(-/-) mice were relatively resistant. On a chow diet, fasting plasma glucose varied among strains with C3H/HeJ having the highest (171.1 ± 9.7 mg/dl) and BALB/cJ the lowest level (104.0 ± 6.6 mg/dl). On a Western diet, fasting plasma glucose rose significantly in all strains, with C57BL/6, C3H/HeJ and SWR/J exceeding 250 mg/dl. BALB/cJ and C3H/HeJ were more tolerant to glucose loading than the other 3 strains. C57BL/6 was sensitive to insulin while other strains were not. Non-fasting blood glucose was significantly lower in C3H/HeJ and BALB/cJ than C57BL/6, SM/J, and SWR/J. Glucose loading induced the 1st and the 2nd phase of insulin secretion in BALB/cJ, but the 2nd phase was not observed in other strains. Morphological analysis showed that BALB/cJ had the largest islet area (1,421,493 ± 61,244 μm(2)) and C57BL/6 had the smallest one (747,635 ± 41,798 μm(2)). This study has demonstrated strain-specific variations in the metabolic and atherosclerotic phenotypes, thus laying the basis for future genetic characterization.
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Li T, Shi Y, Yin J, Qin Q, Wei S, Nie S, Liu L. The association between lipid metabolism gene polymorphisms and nephropathy in type 2 diabetes: a meta-analysis. Int Urol Nephrol 2014; 47:117-30. [DOI: 10.1007/s11255-014-0843-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2014] [Accepted: 09/10/2014] [Indexed: 12/15/2022]
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Lin YJ, Pan JL, Jiang MJ, Tan JH, Zhong W, Gong TK, Jin XC, Cai SH, Wu YJ. Apo E gene polymorphism affects development of type 2 diabetic nephropathy in Asian populations, especially in East Asians: an updated meta-analysis. Med Sci Monit 2014; 20:1596-603. [PMID: 25196797 PMCID: PMC4166221 DOI: 10.12659/msm.892111] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
BACKGROUND Many studies have determined the correlation between the Apolipoprotein E (APO E) gene polymorphisms and diabetic nephropathy, but their results are inconclusive. MATERIAL/METHODS With the aim to confirm this correlation, we performed a meta-analysis of 16 studies. The dichotomous data are presented as the odds ratio (OR) with a 95% confidence interval (CI). RESULTS The results of our study indicate that APO ε2 allele among the pooled Asian populations were more likely to show high risk of DN development (2 allele vs. ε3 allele: pooled OR =1.629, 95% CI=1.010-2.628, P=0.045). For further analysis, the APO e2 allele was associated with progress of DN in the group with duration >10 years, but not in the group with duration <10 years (ε2 allele vs. ε3 allele: pooled OR=1.920, 95% CI=1.338-2.754, P<0.001). The APO e2 polymorphism increased the susceptibility to DN in Asian population compared with healthy people (ε2 allele vs. ε3 allele: pooled OR=1.629, 95% CI=1.010-2.628, P=0.045). CONCLUSIONS Development of DN is associated with APO E polymorphisms in Asian populations, especially in East Asians.
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Affiliation(s)
- Yi-jin Lin
- Department of Nephrology, Danyang People's Hospital, Danyang, China (mainland)
| | - Jin-lin Pan
- Department of Nephrology, Danyang People's Hospital, Danyang, China (mainland)
| | - Min-juan Jiang
- Department of Nephrology, Danyang People's Hospital, Danyang, China (mainland)
| | - Jun-hua Tan
- Department of Nephrology, Danyang People's Hospital, Danyang, China (mainland)
| | - Wei Zhong
- Department of Nephrology, Danyang People's Hospital, Danyang, China (mainland)
| | - Tie-kai Gong
- Department of Nephrology, Danyang People's Hospital, Danyang, China (mainland)
| | - Xiao-chan Jin
- Department of Nephrology, Danyang People's Hospital, Danyang, China (mainland)
| | - Shi-hong Cai
- Department of Nephrology, Danyang People's Hospital, Danyang, China (mainland)
| | - Yao-jun Wu
- Department of Nephrology, Danyang People's Hospital, Danyang, China (mainland)
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APOE polymorphism and diabetic nephropathy. Clin Exp Nephrol 2013; 18:230-3. [DOI: 10.1007/s10157-013-0862-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2013] [Accepted: 08/27/2013] [Indexed: 10/26/2022]
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Dong CQ, Luo YG, Dong K, Chen C, Liu Q, Yang TQ. Relationship between apolipoprotein E gene polymorphism with triglyceride level in patients with renal diseases. Ren Fail 2013; 35:1449-54. [PMID: 24001346 DOI: 10.3109/0886022x.2013.829407] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Apolipoprotein E (apoE), one of the major plasma lipoproteins, plays a major role in the transport and metabolism of lipids by acting as a ligand. apoE gene contains three potential alleles: ϵ2, ϵ3 and ϵ4, forming six genotypes: E2E2, E2E3, E2E4, E3E3, E3E3 and E4E4. Association between apoE gene polymorphism and triglyceride (TG) is still controversial. There was not any meta-analysis to explore the association of apoE gene polymorphism with triglyceride level, and this meta-analysis was performed to evaluate the association between apoE gene polymorphism and triglyceride in patients with renal diseases. A predefined literature search and selection of eligible relevant studies were performed to collect data from electronic databases. Twenty-four articles were identified for the analysis of association between apoE gene polymorphism and triglyceride level. Subjects with E2E3 or E3E4 had a higher TG than those with E3E3. Subjects with ϵ4 had a higher TG than those with ϵ3. Subjects with ϵ2 had a slightly higher TG than those with ϵ3, although there was no statistical difference. Interestingly, subjects with ϵ4 had a much higher TG than those with ϵ2. In conclusion, E2E3, E3E4 or ϵ4 was associated with higher level of TG. However, more studies should be performed in the future.
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Affiliation(s)
- Chun-Qiang Dong
- Department of Pediatric Surgery, The First Affiliated Hospital of GuangXi Medical University , NanNing , China
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Tien KJ, Tu ST, Chou CW, Yang CY, Hsiao JY, Shin SJ, Chen HC, Hsieh MC. Apolipoprotein E polymorphism and the progression of diabetic nephropathy in type 2 diabetes. Am J Nephrol 2011; 33:231-8. [PMID: 21346330 DOI: 10.1159/000324561] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 01/25/2011] [Indexed: 11/19/2022]
Abstract
BACKGROUND/AIMS Three different apo E alleles (E2, E3 and E4) produce apo E isoproteins, which regulate the metabolism of lipoproteins. This study investigated the apo E polymorphisms as a prognostic factor for the development of diabetic nephropathy (DN). METHODS A total of 525 type 2 diabetic patients were enrolled to participate in this prospective observational study. Apo E gene polymorphisms were analyzed by polymerase chain reaction. The progression of DN was defined as a shift to a higher stage of DN or a doubling of the baseline serum creatinine level by the end of the study. RESULTS The mean follow-up period was 42.4 months. The patients whose DN progressed had significantly higher urine albumin/creatinine ratios and fewer used diuretics than those in whom DN did not progress. In the Cox regression analysis, the apo E4 carriers were found to be at greater risk of progression of DN than non-apo E4 carriers (p = 0.007, hazard ratio 2.252). After adjusting for confounding factors, apo E4 carriers remained at increased risk of progression to more severe DN (p = 0.002, hazard ratio 2.820). CONCLUSION Our study suggests the apo E4 carrier might serve as a predictor of DN progression in Taiwan.
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Affiliation(s)
- Kai-Jen Tien
- Division of Endocrinology and Metabolism, Department of Internal Medicine, Chi Mei Medical Center, Tainan, Taiwan, ROC
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Li Y, Tang K, Zhang Z, Zhang M, Zeng Z, He Z, He L, Wan C. Genetic diversity of the apolipoprotein E gene and diabetic nephropathy: a meta-analysis. Mol Biol Rep 2010; 38:3243-52. [PMID: 20177792 DOI: 10.1007/s11033-010-9999-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Accepted: 02/08/2010] [Indexed: 01/01/2023]
Abstract
In the past decade, a number of case-control studies have been carried out to investigate the relationship between the ApoE polymorphism and diabetic nephropathy. However, the results have been inconclusive. To investigate this inconsistency, we performed a meta-analysis of all available studies dealing with the relationship between the ApoE polymorphism and DN. The 23 studies in the meta- analysis included 6,012 diabetic patients with (n = 2,979) and without (n = 3,033) DN. The ApoE ε2 allele was significantly associated with DN (OR = 1.64, 95% CI: 1.26-2.13; P(Z) = 0.00027), whereas the ε4 allele was non-significantly associated with DN (OR = 0.93, 95% CI: 0.78-1.11; P(Z) = 0.418). However, significant heterogeneity was detected. In further subgroup analyses, genotyping methods, outcome of cases and duration of diabetes in controls were found to explain some of the heterogeneity. Genotypic analysis also found a strong association between the ε2 carriers and DN (OR = 1.61, 95% CI: 1.22-2.13; P(Z) = 0.001) and indicated that ε4 tended to have a marginally significant protective effect for DN (OR = 0.82, 95% CI: 0.65-1.03; P(Z) = 0.085). The results of our meta-analysis support a genetic association between the ApoE polymorphism and DN. ε2 increases the risk of DN in diabetes patients, while ε4 trends to be protective. These findings may have implications for therapeutic intervention in diabetic nephropathy.
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Affiliation(s)
- Yang Li
- Bio-X Center, Key Laboratory for the Genetics of Developmental and Neuropsychiatric Disorders (Ministry of Education), Shanghai Jiao Tong University, 1954 Huashan Road, Shanghai 200030, China
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