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Liu CW, Peng HY, Siao AC, Tsuei YW, Lin YY, Shiah SG, Shih LJ, Yeh CC, Lee SW, Kao YH. Resistin stimulates PC-3 prostate cancer cell growth through stimulation of SOCS3 and SOCS5 genes. Exp Biol Med (Maywood) 2023; 248:1695-1707. [PMID: 37646261 PMCID: PMC10792425 DOI: 10.1177/15353702231191206] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Accepted: 05/08/2023] [Indexed: 09/01/2023] Open
Abstract
Resistin and suppressors of cytokine signaling (SOCSs) have been reported to regulate prostate cancer (PCa) cell proliferation and survival, respectively. Whether any of the SOCS molecules mediate the mitogenic effect of resistin on PCa cells is unknown. Using PC-3 human PCa cells, we found that resistin upregulates the expression of SOCS3 and SOCS5 mRNA, but not SOCS7 mRNA, in a dose- and time-dependent manner. The resistin-induced increases in SOCS3 and SOCS5 expression and cell proliferation were prevented by pretreatment with specific inhibitors of the TLR4, ERK, p38 MAPK, JNK, PI3K, and JAK2 proteins. However, pretreatment with a TLR2 inhibitor had no effect on resistin-mediated SOCS3 and SOCS5 expression. In addition, the effects of resistin on SOCS3, SOCS5, and SOCS7 mRNA levels were cell type-specific. Overexpression of either SOCS3 or SOCS5 enhanced further resistin-stimulated growth of PC-3 cells, whereas silencing SOCS3 or SOCS5 antagonized resistin-increased cell growth. Further PCa tissue analysis demonstrated higher levels of RETN, TLR4, SOCS3, and SOCS5 mRNAs in cancer tissues than benign prostate hyperplasia and indicated positive correlations among RETN, TLR4, and SOCS5. These data suggest that SOCS5, TLR4, and, to a lesser extent, SOCS3 can mediate the mitogenic effect of resistin on PC-3 PCa cells.
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Affiliation(s)
- Chi-Wei Liu
- Department of Life Sciences, National Central University, Taoyuan 320
- Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330
| | - Hsuan-Yu Peng
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350
| | - An-Ci Siao
- Department of Life Sciences, National Central University, Taoyuan 320
| | - Yi-Wei Tsuei
- Department of Emergency Medicine, Taoyuan Armed Forces General Hospital, Taoyuan 325
| | - Yen-Yue Lin
- Department of Life Sciences, National Central University, Taoyuan 320
- Department of Emergency Medicine, Taoyuan Armed Forces General Hospital, Taoyuan 325
| | - Shine-Gwo Shiah
- National Institute of Cancer Research, National Health Research Institutes, Miaoli 350
| | - Li-Jane Shih
- Medical Laboratory, Taoyuan Armed Forces General Hospital, Taoyuan 325
| | - Chien-Chih Yeh
- Division of Colon and Rectal Surgery, Department of Surgery, Taoyuan Armed Forces General Hospital, Taoyuan 325
| | - Shih-Wei Lee
- Department of Internal Medicine, Taoyuan General Hospital, Ministry of Health and Welfare, Taoyuan 330
- Department of Nursing, Yuanpei University of Medical Technology, Hsinchu 300
| | - Yung-Hsi Kao
- Department of Life Sciences, National Central University, Taoyuan 320
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2
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Tewari R, Dalal D, Rawat S, Malik A, Ghalaut V, Bajpai A. The altered levels of adiponectin - leptin as predictive biomarkers to estimate the severity of prostate cancer. Biomedicine (Taipei) 2022. [DOI: 10.51248/.v42i5.1529] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Introduction and Aim: Prostate is one of the commonest sites of malignancy affecting elderly male population & is increasingly becoming a significant public health issue especially in countries having aging population. We hypothesized that altered levels of adiponectin-leptins may be an underlying connection between incidence of prostate cancer (PCa) and aged matched males.
Materials and Methods: This study was designed to comparatively corelate circulating serum levels of adiponectin & leptin in 160 elderly patients with PCa to their serum levels in 160 healthy controls. The age and body mass index in all groups were dissimilar in case and control. Based on the Gleason score of 7, =7 >7, patients were further subdivided into low, intermediate, high grades of PCa, respectively.
Results: No significant statistical variance was identified in terms of age, Body mass index (BMI), Radom blood glucose, HDL, LDL, triglycerides, total cholesterol, creatinine, and BUN levels within the compared groups. In PCa patients’ group, concentration levels of serum adiponectin were significantly lower, and levels of serum leptin was significantly greater compared to healthy controls (P<0.001). Statistical analysis revealed a significant positive inverse association between PSA and adiponectin levels (r=0.285, P<0.001) and significant association between serum levels of PSA and leptin (r=0.285, P<0.001). Significant statistical correlation was also evident between BMI, PSA, TG, and leptin were whole group. However, there was no significant association observed between adiponectin or leptin level and grade of the disease.
Conclusion: Evaluation of data in our study suggests that patients of PCa exhibit low concentration of serum adiponectin levels and high concentration of leptin levels. Further, this association was independent of histological grading of disease of disease/disease progression as well as other biochemical parameters.
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Zhang A, Wang S, Zhang F, Li W, Li Q, Liu X. The Prognosis of Leptin rs2167270 G > A (G19A) Polymorphism in the Risk of Cancer: A Meta-Analysis. Front Oncol 2021; 11:754162. [PMID: 34868961 PMCID: PMC8637904 DOI: 10.3389/fonc.2021.754162] [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: 08/06/2021] [Accepted: 10/29/2021] [Indexed: 01/08/2023] Open
Abstract
Background Although the effect of the LEP G19A (rs2167270) polymorphism on cancers is assumed, the results of its influence have been contradictory. A meta-analysis was conducted to precisely verify the relationships between LEP G19A and the development of digestion-related cancers. Methods Investigators systematically searched the literature in PubMed, Embase, and Web of Science and used STATA software 14.0 for the meta-analysis. The odds ratios (ORs) and 95% confidence intervals (CIs) were calculated to evaluate the associations. Subgroup analyses stratified by ethnicity, cancer type, and cancer system were further conducted to assess the relationship between the LEP G19A polymorphism and digestion-related cancers. Results In the overall population, we found a significant relationship with overall cancer (allele comparison: OR = 0.921, p = 0.000; dominant comparison: OR = 0.923, p = 0.004; recessive comparison: OR = 0.842, p = 0.000; homozygote model: OR = 0.0843, p = 0.001). In a subgroup analysis conducted by ethnicity, we obtained significant results in Asians (Asian allele comparison: OR = 0.885, p = 0.000; dominant comparison: OR = 0.862, p = 0.000; homozygote model: OR = 0.824, p = 0.039; and heterozygote comparison: OR = 0.868, p = 0.000) but not in Caucasians. In a subgroup analysis conducted by cancer type and cancer system, we obtained significant results that the LEP G19A polymorphism may decrease the risk of colorectal cancer, esophageal cancer, digestive system cancer, and urinary system cancer. Conclusions This meta-analysis revealed that the LEP G19A polymorphism may decrease the risk of cancer.
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Affiliation(s)
- Aiqiao Zhang
- Department of Neonatology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Department of Neonatology, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Shangren Wang
- Department of Urology, Tianjin Medical University General Hospital, Tianjin, China
| | - Fujun Zhang
- Department of Neonatology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Department of Neonatology, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Wei Li
- Department of Neonatology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Department of Neonatology, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Qian Li
- Department of Neonatology, First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin, China.,Department of Neonatology, National Clinical Research Center for Chinese Medicine Acupuncture and Moxibustion, Tianjin, China
| | - Xiaoqiang Liu
- Department of Urology, Tianjin Medical University General Hospital, Tianjin, China
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4
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Harun-Or-Roshid M, Ali MB, Mollah MNH. Statistical meta-analysis to investigate the association between the Interleukin-6 (IL-6) gene polymorphisms and cancer risk. PLoS One 2021; 16:e0247055. [PMID: 33684135 PMCID: PMC7939379 DOI: 10.1371/journal.pone.0247055] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Accepted: 01/30/2021] [Indexed: 01/18/2023] Open
Abstract
A good number of genome-wide association studies (GWAS), including meta-analyses, reported that single nucleotide polymorphisms (SNPs) of the IL-6 gene are significantly associated with various types of cancer risks, though some other studies reported insignificant association with cancers, in the literature. These contradictory results may be due to variations in sample sizes and/or deficiency of statistical modeling. Therefore, an attempt is made to provide a more comprehensive understanding of the association between the IL-6 gene SNPs (rs1800795, rs1800796, rs1800797) and different cancer risks, giving the weight on a large sample size, including different cancer types and appropriate statistical modeling with the meta-dataset. In order to attain a more reliable consensus decision about the association between the IL-6 gene polymorphisms and different cancer risks, in this study, we performed a multi-case statistical meta-analysis based on the collected information of 118 GWAS studies comprising of 50053 cases and 65204 control samples. Results from this Meta-analysis indicated a significant association (p-value < 0.05) of the IL-6 gene rs1800796 polymorphism with an overall increased cancer risk. The subgroup analysis data based on cancer types exhibited significant association (p-value < 0.05) of the rs1800795 polymorphism with an overall increased risk of cervical, liver and prostate cancers; the rs1800796 polymorphism with lung, prostate and stomach cancers; and the rs1800797 polymorphism with cervical cancer. The subgroup analysis of ethnicity data showed a significant association (p-value < 0.05) of an overall cancer risk with the rs1800795 polymorphism for the African and Asian populations, the rs1800796 polymorphism for the Asian only and the rs1800797 polymorphism in the African population. Comparative discussion showed that our multi-case meta-analyses received more support than any previously reported individual meta-analysis about the association between the IL-6 gene polymorphisms and cancer risks. Results from this study, more confidently showed that the IL-6 gene SNPs (rs1800795, rs1800796 and rs1800797) in humans are associated with increased cancer risks. Therefore, these three polymorphisms of the IL-6 gene have the potential to be evaluated as a population based rapid, low-cost PCR prognostic biomarkers for different types of cancers diagnosis and research.
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Affiliation(s)
- Md. Harun-Or-Roshid
- Bioinformatics Laboratory, Department of Statistics, University of Rajshahi, Rajshahi, Bangladesh
| | - Md. Borqat Ali
- Bioinformatics Laboratory, Department of Statistics, University of Rajshahi, Rajshahi, Bangladesh
| | - Md. Nurul Haque Mollah
- Bioinformatics Laboratory, Department of Statistics, University of Rajshahi, Rajshahi, Bangladesh
- * E-mail: (MNHM); (J)
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Ma R, He Q. A Variant of Leptin Gene Decreases the Risk of Gastric Cancer in Chinese Individuals: Evidence from a Case-Control Study. PHARMACOGENOMICS & PERSONALIZED MEDICINE 2020; 13:397-404. [PMID: 33061532 PMCID: PMC7519837 DOI: 10.2147/pgpm.s258672] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Accepted: 08/11/2020] [Indexed: 12/19/2022]
Abstract
Background A host of studies have explored the potential connection between leptin (LEP) G19A polymorphism and the risk of cancers, but the relationship between gastric cancer (GC) susceptibility and LEP G19A polymorphism was not revealed before. The aim of this study was to investigate this relationship in Chinese Han population. Methods Thus, this case–control study with 380 GC cases and 465 controls was designed to unearth the link between LEP G19A polymorphism and GC susceptibility. Genotyping was accomplished by a custom-made 48-Plex SNP scanTM kit. Relative LEP gene expression was detected by real-time reverse transcription-polymerase chain reaction. Results LEP G19A polymorphism was shown to relate with a decreased risk of GC. Subgroup analyses uncovered significant connections in the males, nondrinkers, and those at age <60 years. G19A polymorphism was also linked with tumor size and location and pathological type of GC. Last, LEP gene expression in gastric tissues was considerably less than in control tissues. Conclusion This study shows that G19A polymorphism of LEP gene is linked with a lower risk of GC in the tested Chinese Han individuals.
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Affiliation(s)
- Renjie Ma
- Department of Infectious Disease, The People's Hospital of Danyang, Affiliated Danyang Hospital of Nantong University, Danyang, Jiangsu Province, 212300, People's Republic of China
| | - Qi He
- Department of Infectious Disease, The People's Hospital of Danyang, Affiliated Danyang Hospital of Nantong University, Danyang, Jiangsu Province, 212300, People's Republic of China
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6
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The association between adiponectin gene rs182052 polymorphism and cancer risk: a meta-analysis. Biosci Rep 2020; 40:225358. [PMID: 32588903 PMCID: PMC7322108 DOI: 10.1042/bsr20192410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 06/03/2020] [Accepted: 06/18/2020] [Indexed: 12/25/2022] Open
Abstract
Background: The evidence for an association between the adiponectin gene (ADIPOQ) polymorphism rs182052 and cancer risk is inconsistent. We performed a meta-analysis to obtain more precise conclusions. Methods: The PubMed, Embase, and Web of Science databases were searched until July 11, 2019. And seven epidemiology studies were retrieved, including 4,929 cases and 5,625 controls. Odds ratios (ORs) and the corresponding 95% confidence intervals (CIs) were calculated to evaluate the strength of the association. Results: The meta-analysis demonstrated that rs182052 significantly increased the risk of cancer under the allele, homozygote, dominant, and recessive models, based on an overall analysis (A vs. G: OR, 1.09, 95% CI, 1.03–1.15, P=0.003; AA vs. GG: OR, 1.20, 95% CI, 1.07–1.34, P=0.002; AA+GA vs. GG: OR, 1.12, 95% CI, 1.03–1.22, P=0.010; AA vs. GA+GG: OR, 1.12, 95% CI, 1.01–1.23, P=0.025). In the stratified analysis by ethnicity, rs182052 significantly increased the cancer risk in both Asian and Caucasian populations under one or several genetic models. In the stratified analysis by cancer type, rs182052 significantly increased the risk of renal cell carcinoma (RCC) under the five models. Conclusions: Meta-analysis based on present studies suggests that rs182052 can increase the cancer risk.
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7
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Mao F, Niu XB, Gu S, Ji L, Wei BJ, Wang HB. Investigation of Leptin G19A polymorphism with bladder cancer risk: A case-control study. J Clin Lab Anal 2020; 34:e23351. [PMID: 32363657 PMCID: PMC7439434 DOI: 10.1002/jcla.23351] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/29/2020] [Accepted: 04/09/2020] [Indexed: 12/31/2022] Open
Abstract
Background A host of studies show Leptin (LEP) G19A polymorphism is correlated with the risk of various cancers, but the connection of this polymorphism with bladder cancer (BC) risk has not been reported. Materials and methods This association was in explored in a case‐control study involving 355 BC cases and 435 controls (all Chinese Han). Polymerase chain reaction‐restriction fragment length polymorphism was conducted to genotype LEP G19A polymorphism. Analyses of allele and genotype distribution were evaluated using chi‐square test. Continuous data were assessed by an independent samples t test or one‐way ANOVA test. Odds ratio (OR) and 95% confidence interval (CI) were determined by logistic regression. Results LEP G19A polymorphism was significantly associated with a lower risk of BC (AA vs GG: adjusted OR, 0.40, 95% CI, 0.20‐0.83, P = .013; AA + GA vs GG: adjusted OR, 0.70, 95% CI, 0.52‐0.93, P = .015; AA vs GA + GG: adjusted OR, 0.45, 95% CI, 0.22‐0.91, P = .026). In addition, A allele was associated with decreased risk for BC (A vs G: OR, 0.70, 95% CI, 0.55‐0.89, P = .003). Stratified analyses by females, non‐drinkers, and non‐smokers all returned considerable relations. Furthermore, LEP G19A polymorphism was correlated with tumor size, tumor node metastasis, and distant metastasis in BC patients. Conclusions LEP G19A polymorphism is associated with a less risk of BC.
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Affiliation(s)
- Fei Mao
- Department of Urology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Xiao-Bing Niu
- Department of Urology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Shuo Gu
- Department of Urology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Lu Ji
- Department of Urology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Bing-Jian Wei
- Department of Urology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, China
| | - Heng-Bing Wang
- Department of Urology, The Affiliated Huai'an No.1 People's Hospital of Nanjing Medical University, Huai'an, China
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Yin L, Yue C, Jing H, Yu H, Zuo L, Liu T. No association between three polymorphisms (rs1800629, rs361525 and rs1799724) in the tumor necrosis factor-α gene and susceptibility to prostate cancer: a comprehensive meta-analysis. Hereditas 2020; 157:11. [PMID: 32264962 PMCID: PMC7137332 DOI: 10.1186/s41065-020-00125-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Accepted: 03/23/2020] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Inflammation is one of the factors associated with prostate cancer. The cytokine tumor necrosis factor-alpha (TNF-α) plays an important role in inflammation. Several studies have focused on the association between TNF-α polymorphisms and prostate cancer development. Our meta-analysis aimed to estimate the association between TNF-α rs1800629 (- 308 G/A), rs361525 (- 238 G/A) and rs1799724 polymorphisms and prostate cancer risk. METHODS Eligible studies were identified from electronic databases (PubMed, Embase, Wanfang and CNKI) using keywords: TNF-α, polymorphism, prostate cancer, until Nov 15, 2019. Odds ratios (ORs) with 95% confidence intervals (CIs) were applied to determine the association from a quantitative point-of-view. Publication bias and sensitivity analysis were also applied to evaluate the power of current study. All statistical analyses were done with Stata 11.0 software. RESULTS Twenty-two different articles were included (22 studies about rs1800629; 8 studies for rs361525 and 5 studies related to rs1799724). Overall, no significant association was found between rs1800629 and rs1799724 polymorphisms and the risk of prostate cancer in the whole (such as: OR = 1.03, 95% CI = 0.92-1.16, P = 0.580 in the allele for rs1800629; OR = 0.95, 95% CI = 0.84-1.07, P = 0.381 in the allele for rs1799724). The rs361525 polymorphism also had no association with prostate cancer in the cases (OR = 0.93, 95% CI = 0.66-1.32, P = 0.684 in the allele) and ethnicity subgroup. The stratified subgroup of genotype method, however, revealed that the rs361525 variant significantly decreased the risk of prostate cancer in the Others (OR = 0.65, 95% CI = 0.47-0.89, P = 0.008, A-allele vs G-allele) and PCR-RFLP (OR = 2.68, 95% CI = 1.00-7.20, P = 0.050, AG vs GG or AA+AG vs GG) methods. CONCLUSIONS In summary, the findings of the current meta-analysis indicate that the TNF-α rs1800629, rs361525 and rs1799724 polymorphisms are not correlated with prostate cancer development, although there were some pooled positive results. Further well-designed studies are necessary to form more precise conclusions.
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Affiliation(s)
- Lei Yin
- Department of Urology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, P.R. China
| | - Chuang Yue
- Department of Urology, Changzhou No. 2 People's Hospital Affiliated to Nanjing Medical University, Changzhou, 213003, Jiangsu Province, China
| | - Hongwei Jing
- Department of Urology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, P.R. China
| | - Hongyuan Yu
- Department of Urology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, P.R. China
| | - Li Zuo
- Department of Urology, Changzhou No. 2 People's Hospital Affiliated to Nanjing Medical University, Changzhou, 213003, Jiangsu Province, China.
| | - Tao Liu
- Department of Urology, The First Affiliated Hospital of China Medical University, Shenyang, 110001, P.R. China.
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Ahmad AE, Mohammed A, Bhindi B, Richard PO, Fadaak K, Leão R, Finelli A, Fleshner NE, Kulkarni GS. Serum Adipokines as Predictors for the Outcome of Prostate Biopsies at Early Stage Prostate Cancer Diagnosis. Cancer Manag Res 2019; 11:10043-10050. [PMID: 31819637 PMCID: PMC6890197 DOI: 10.2147/cmar.s226174] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 10/26/2019] [Indexed: 11/23/2022] Open
Abstract
Purpose Elevated adipokines in patients with obesity and metabolic syndrome have been linked to increased risk of prostate cancer (PCa). The association between select serum adipokines and the outcome of prostate biopsies alone and in combination with clinical parameters at different early stages of PCa was investigated. Patients and methods Clinical data and serum adipokines were retrieved from three retrospective cohorts representing men at different points in PCa detection: 1. Subjects with no prior biopsies (n=1061), 2. subjects with a prior negative biopsy (REDUCE trial, control arm) (n=1209), 3. subjects with low-risk PCa on active surveillance (AS) (n=154). Adipokines were chosen based on an unpublished pilot study and included: Resistin, Tumor Necrosis Factor-α, Interleukin-6, Monocyte Chemoattractant Protein-1, Hepatocyte Growth Factor, and Nerve Growth Factor. The primary outcome was the absence of PCa on biopsy and the secondary outcome was diagnosis of low-risk PCa fitting the criteria for continuing AS. Logistic regression analysis was used to assess the association of adipokines and negative and/or low-risk PCa at prostate biopsy. Results In men with no prior prostate biopsy or with prior negative biopsy, adipokines were not predictors of prostate biopsy outcomes on multivariable regression analysis controlling for known clinical variables. In the AS cohort, MCP-1 and Resistin were significant predictors of biopsy outcome on multivariable analysis (OR 0.20, 95% CI: 0.05–0.85, p= 0.03 & OR 0.30, 95% CI: 0.10 −0.86, p= 0.03). Conclusion Our findings do not support a strong role for adipokines for predicting the outcome of prostate biopsies at any early stage in PCa diagnosis.
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Affiliation(s)
- Ardalan E Ahmad
- Division of Urology, Department of Surgery, University Health Network, Princess Margaret Cancer Centre, University of Toronto, Toronto, Ontario, Canada
| | - Aza Mohammed
- Department of Urology, Luton and Dunstable University Hospital, Luton, UK
| | - Bimal Bhindi
- Division of Urology, Department of Surgery, University Health Network, Princess Margaret Cancer Centre, University of Toronto, Toronto, Ontario, Canada.,Southern Alberta Institute of Urology, Calgary, Alberta, Canada
| | - Patrick O Richard
- Division of Urology, Department of Surgery, Centre Hospitalier Universitaire de Sherbrooke, Centre de Recherche du CHUS, Université de Sherbrooke, Sherbrooke, Quebec, Canada
| | - Kamel Fadaak
- Department of Urology, King Fahd Hospital of the University, College of Medicine, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Ricardo Leão
- CUF Department of Urology, Hospital De Braga, Faculty of Medicine, University of Coimbra, Portugal
| | - Antonio Finelli
- Division of Urology, Department of Surgery, University Health Network, Princess Margaret Cancer Centre, University of Toronto, Toronto, Ontario, Canada
| | - Neil E Fleshner
- Division of Urology, Department of Surgery, University Health Network, Princess Margaret Cancer Centre, University of Toronto, Toronto, Ontario, Canada
| | - Girish S Kulkarni
- Division of Urology, Department of Surgery, University Health Network, Princess Margaret Cancer Centre, University of Toronto, Toronto, Ontario, Canada
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10
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Hu X, Hu C, Zhang C, Zhang M, Long S, Cao Z. Role of Adiponectin in prostate cancer. Int Braz J Urol 2019; 45:220-228. [PMID: 30648824 PMCID: PMC6541146 DOI: 10.1590/s1677-5538.ibju.2018.0261] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2018] [Accepted: 09/13/2018] [Indexed: 02/07/2023] Open
Abstract
Obesity is defined as a chronic and excessive growth of adipose tissue. It has been associated with a high risk for development and progression of obesity-associated malignancies, while adipokines may mediate this association. Adiponectin is an adipose tissue-derived adipokines, with significant anti-diabetic, anti-inflammatory, anti-atherosclerotic and anti-proliferative properties. Plasma adiponectin levels are decreased in obese individuals, and this feature is closely correlated with development of several metabolic, immunological and neoplastic diseases. Recent studies have shown that prostate cancer patients have lower serum adiponectin levels and decreased expression of adiponectin receptors in tumor tissues, which suggests plasma adiponectin level is a risk factor for prostate cancer. Furthermore, exogenous adiponectin has exhibited therapeutic potential in animal models. In this review, we focus on the potential role of adiponectin and the underlying mechanism of adiponectin in the development and progression of prostate cancer. Exploring the signaling pathways linking adiponectin with tumorigenesis might provide a potential target for therapy.
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Affiliation(s)
- Xiaobo Hu
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China.,Department of Biotechnology, School of Pharmacy and Biosciences, University of South China, Hengyang, China
| | - Cong Hu
- Department of Biotechnology, School of Pharmacy and Biosciences, University of South China, Hengyang, China
| | - Caiping Zhang
- Department of Biotechnology, School of Pharmacy and Biosciences, University of South China, Hengyang, China
| | - Min Zhang
- Department of Biotechnology, School of Pharmacy and Biosciences, University of South China, Hengyang, China
| | - Shiyin Long
- Department of Biotechnology, School of Pharmacy and Biosciences, University of South China, Hengyang, China
| | - Zhaohui Cao
- Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China.,Department of Biotechnology, School of Pharmacy and Biosciences, University of South China, Hengyang, China
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11
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Yang J, Zhong Z, Tang W, Chen J. Leptin rs2167270 G > A (G19A) polymorphism may decrease the risk of cancer: A case-control study and meta-analysis involving 19 989 subjects. J Cell Biochem 2019; 120:10998-11007. [PMID: 30697798 PMCID: PMC6590124 DOI: 10.1002/jcb.28378] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2018] [Accepted: 01/10/2019] [Indexed: 01/24/2023]
Abstract
Accumulating evidence has suggested that leptin (LEP) is very important for the development of cancer. Recently, a number of case-control studies about the relationship of the rs2167270 G > A (G19A) variants in the LEP gene with the risk of cancer have yielded inconsistent results. In this study, we have carried out a case-control study [1063 esophagogastric junction adenocarcinoma (EGJA) cases and 1677 controls] in a Chinese population. Furthermore, we carried out a pooled-analysis of 13 studies involving 8059 cancer patients and 11 930 controls to assess whether the LEP G19A locus was associated with overall cancer susceptibility. Odds ratios (ORs) with the corresponding 95% confidence intervals (CIs) were harnessed to evaluate the potential association. In our case-control study, we found an association between the carriers of LEP 19A allele and EGJA risk. In addition, the results of meta-analysis also suggested significant associations with cancer risk (A vs G: OR = 0.92, 95% CI = 0.88-0.97, P = 0.001; AA vs GG: OR = 0.83, 95% CI = 0.74-0.93, P = 0.001, GA/AA vs GG: OR = 0.93, 95% CI = 0.88-0.99, P = 0.023 and AA vs GG/GA: OR = 0.83, 95% CI = 0.74-0.92, P < 0.001). Upon conducting a stratified analysis, we found that LEP 19A allele might decrease the susceptibility of non-Hodgkin lymphoma (NHL) and colorectal cancer (CRC). In a stratified-by-ethnicity analysis, significant associations were also found in Asians, Caucasians, and mixed populations. We can conclude that the LEP G19A polymorphism constitutes a decreased risk of cancer.
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Affiliation(s)
- Jing Yang
- Department of GastroenterologyThe Third Affiliated Hospital of Soochow UniversityChangzhouJiangsuChina
| | - Zhihui Zhong
- Department of OrthopaedicsFuzhou Second Hospital Affiliated to Xiamen UniversityFuzhouFujianChina
| | - Weifeng Tang
- Department of Cardiothoracic SurgeryAffiliated People’s Hospital of Jiangsu UniversityZhenjiangJiangsuChina
| | - Jianping Chen
- Department of GastroenterologyThe Third Affiliated Hospital of Soochow UniversityChangzhouJiangsuChina
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12
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Tang W, Kang M, Liu C, Qiu H. Leptin rs7799039 (G2548A) polymorphism is associated with cancer risk: a meta-analysis involving 25,799 subjects. Onco Targets Ther 2019; 12:2879-2890. [PMID: 31114233 PMCID: PMC6489571 DOI: 10.2147/ott.s190093] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2018] [Accepted: 03/07/2019] [Indexed: 12/24/2022] Open
Abstract
Background: Leptin (LEP) is a human analogous form of the mouse obese gene and plays a critical role in energy expenditure as well as the progression of carcinogenesis. Many studies exploring the relationship between the LEP rs7799039 (G2548A) polymorphism and cancer risk have observed controversial results. To extensively evaluate this potential association, we conducted this meta-analysis. Methods: All eligible studies published up to August 2018 on the relationship between the LEP rs7799039 G>A polymorphism and cancer risk were obtained by searching PubMed, EMBASE, and the China Biology Medicine databases. The association of LEP rs7799039 G>A polymorphism with cancer risk was evaluated by crude ORs together with their 95% CI's. Results: Thirty-one case–control studies involving 25,799 subjects were included for meta-analysis. We identify a significant correlation with an overall cancer risk when these eligible case–control studies were pooled for analysis: for AA vs GG: an OR = 1.22, 95% CI = 1.01–1.48, P = 0.042 and for AA/GA vs GG: an OR = 1.16, 95% CI = 1.02–1.33, P = 0.026. A significant association was also detected in Asians, prostate cancer, other cancers, and hematopoietic malignancy subgroups. Sensitivity analysis was conducted by deleting an individual study in turn and calculation of the pooled ORs and CIs of the remainders. The results of sensitivity analyses indicated that no eligible study influenced the pooled ORs and CIs materially. Begg’s and Egger’s tests revealed that there was no evidence of publication bias. Conclusion: In conclusion, our study suggests that the LEP rs7799039 G>A polymorphism might contribute to the development of cancer. In order to further verify or refute our findings, large and well-designed epidemiological studies are needed.
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Affiliation(s)
- Weifeng Tang
- Department of Cardiothoracic Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People's Republic of China
| | - Mingqiang Kang
- Department of Thoracic Surgery, Fujian Medical University Union Hospital, Fuzhou, Fujian Province, People's Republic of China.,Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, Fujian Province, People's Republic of China.,Fujian Key Laboratory of Tumor Microbiology, Fujian Medical University, Fuzhou, Fujian Province, People's Republic of China
| | - Chao Liu
- Department of Cardiothoracic Surgery, Affiliated People's Hospital of Jiangsu University, Zhenjiang, Jiangsu Province, People's Republic of China
| | - Hao Qiu
- Department of Immunology, School of Medicine, Jiangsu University, Zhenjiang, Jiangsu Province, People's Republic of China
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13
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LEPR polymorphisms and haplotypes in Mexican patients with colorectal cancer. BIOMEDICA 2019; 39:205-211. [PMID: 31021558 DOI: 10.7705/biomedica.v39i1.4091] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Indexed: 11/21/2022]
Abstract
INTRODUCTION Obesity and colorectal cancer could be linked by adipocytokines, which are proteins associated with cell proliferation. High levels of the adipocytokine leptin promote the development of colorectal cancer through its receptor. OBJECTIVE To determine the association between c.326A>G and c.668A>G LEPR gene polymorphisms and colorectal cancer. MATERIALS AND METHODS DNA was extracted from the peripheral blood of 147 patients with sporadic colorectal cancer and 134 healthy people. Genotypes were obtained by PCRRFLP and the association was determined by the odds ratio (OR) test using the SPSS™, version 10.0, program. Haplotype frequencies and linkage disequilibrium were estimated by the Arlequin, version 3.5, software. RESULTS Both polymorphisms were in Hardy-Weinberg equilibrium. Only the c.326A>G heterozygous genotype revealed an increased risk for colorectal cancer development (OR=1.81, 95% CI=1.04-3.16, p=0.04). The AG haplotype showed a significant association with colorectal cancer (OR=0.58, 95% CI=0.35-0.96, p<0.03). Linkage disequilibrium between the variants was only evident for the patients group (r2=0.36). CONCLUSION Our results suggest that AG individuals heterozygous for the c.326A>G LEPR variant have a higher risk of colorectal cancer development whereas the AG haplotype (c.326A/c.668G) has a protective effect in the Mexican population.
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Xu W, Ni Z, Zhang M, Chen J, Zhang L, Wu S, Liang C. The Role of Polymorphisms in Genes of PI3K/Akt Signaling Pathway on Prostate. J Cancer 2019; 10:1023-1031. [PMID: 30854108 PMCID: PMC6400800 DOI: 10.7150/jca.26472] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 01/09/2019] [Indexed: 12/18/2022] Open
Abstract
Background and Objective: Increasing evidence suggested that polymorphisms in genes of PI3K/Akt pathway were closely related to prostate cancer (PCa) risk. Nevertheless, these results are controversial and inconclusive. Here, we conducted a comprehensive updated meta-analysis and systematic review to precisely illustrate the association between polymorphisms in genes of PI3K/Akt signaling pathway and PCa risk. Materials and Methods: The gene set of PI3K/Akt pathway was referenced from the Kyoto Encyclopedia of Genes and Genomes (KEGG) website. Relevant studies were identified by the systematically researching on PubMed, Web of Science and Google Scholar databases up to October 1, 2017. The odds ratios (ORs) with a corresponding 95% confidential intervals (95%CIs) were applied to test their associations. All the analyses were conducted by using Stata 12.0 (Stata Corporation, USA). Results: Finally, 38 articles comprising 62 case-control studies were enrolled for 13 polymorphisms in genes of PI3K/Akt pathway. However, overall results failed to present a positive association between polymorphisms in genes of PI3K/Akt pathway and PCa risk. Nevertheless, in the subgroup analysis by ethnicity, we identified that IL-6-rs1800795 polymorphism was associated with an increased risk of PCa for Caucasian individuals in dominant model (MM + MW vs. WW: OR = 1.245, 95%CI = 1.176-1.318, P < 0.001). Conclusion: Our work suggests that polymorphisms in genes of PI3K/Akt Signaling Pathway are not risk factor for PCa. Further well-designed studies with larger samples and precise designs are demanded to corroborate our findings.
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Affiliation(s)
- Wei Xu
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230000, China.,Department of Blood Transfusion, The First Affiliated Hospital of Anhui Medical University, Hefei, 230000, China
| | - Zhihao Ni
- Trauma Department of Orthopedics, The Third Affiliated Hospital of Anhui Medical University, Hefei, Anhui, 230000, China
| | - Meng Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230000, China
| | - Jinbo Chen
- Department of Urology, Xiangya Hospital, Central South University, NO.87 Xiangya Road, Changsha, Hunan, 410008, China
| | - Li Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230000, China
| | - Song Wu
- Shenzhen Following Precision Medical Institute, Shenzhen Luohu Hospital Group, Shenzhen, 518000, China
| | - Chaozhao Liang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University, Hefei, 230000, China
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15
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Zhou L, Zheng Y, Tian T, Liu K, Wang M, Lin S, Deng Y, Dai C, Xu P, Hao Q, Kang H, Dai Z. Associations of interleukin-6 gene polymorphisms with cancer risk: Evidence based on 49,408 cancer cases and 61,790 controls. Gene 2018; 670:136-147. [PMID: 29842912 DOI: 10.1016/j.gene.2018.05.104] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 05/03/2018] [Accepted: 05/25/2018] [Indexed: 12/11/2022]
Abstract
Many molecular epidemiologic studies have shown that interleukin-6 (IL-6) polymorphisms are significantly associated with susceptibility for various cancers. However, the conclusions of these studies are inconsistent. The purpose of the present study was to explore the association between three common IL-6 loci (rs1800795, rs1800796, and rs1800797) and the risk for various cancers. We systematically searched the PubMed, Web of Science, Wanfang and China national knowledge infrastructure (CNKI) databases for relevant publications and obtained 108 eligible studies, involving 49,408 cancer patients and 61,790 cancer-free controls. Odds ratio (OR), 95% confidence interval (CI), and false positive reporting probability (FPRP) were used to evaluate cancer risk. All statistical analyses were performed using the R software meta package. We observed a non-significant association between rs1800795 and overall cancer risk, while rs1800797 was found to have a false positive association with overall risk of cancer. Subgroup analyses of rs1800797 also suggested non-significant association and rs1800795 played a protective role in liver cancer. Rs1800796 was found to be associated with overall cancer risk, particularly in Asian patients and those with prostate cancer. These findings provide evidence that IL-6 polymorphisms may affect cancer risk.
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Affiliation(s)
- Linghui Zhou
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Yi Zheng
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Tian Tian
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Kang Liu
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Meng Wang
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Shuai Lin
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Yujiao Deng
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Cong Dai
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Peng Xu
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Qian Hao
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China
| | - Huafeng Kang
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China.
| | - Zhijun Dai
- Department of Oncology, Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an 710004, China.
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Hu MB, Xu H, Hu JM, Zhu WH, Yang T, Jiang HW, Ding Q. Genetic polymorphisms in leptin, adiponectin and their receptors affect risk and aggressiveness of prostate cancer: evidence from a meta-analysis and pooled-review. Oncotarget 2018; 7:81049-81061. [PMID: 27768592 PMCID: PMC5348375 DOI: 10.18632/oncotarget.12747] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Accepted: 10/12/2016] [Indexed: 01/04/2023] Open
Abstract
Leptin and adiponectin signaling was associated with development and progression of various cancers. The present study aimed to clarify the role of genetic variants in leptin, adiponectin and their receptors in prostate cancer. After comprehensive search and manuscript scanning, a total of 49 genetic variants were enrolled and examined for their relations to cancer risk and aggressiveness. In the meta-analysis, LEP rs7799039 (allele contrast: OR 1.133, 95%CI 1.024-1.254), ADIPOQ rs2241766 (allele contrast: OR 1.201, 95%CI 1.015-1.422) and ADIPOR1 rs10920531 (allele contrast: OR 1.184, 95%CI 1.075-1.305) variants were identified to be correlated with increased risk of prostate cancer. On the contrary, LEPR rs1137101 (allele contrast: OR 0.843, 95%CI 0.730-0.973) and ADIPOR1 rs2232853 (allele contrast: OR 0.638, 95%CI 0.535-0.760) variants were associated with decreased risk of prostate cancer. From the pooled-review, we additionally recognized eight variants associated with cancer risk and another eight variants associated with cancer aggressiveness, respectively. These observations indicated important roles of leptin, adiponectin and their receptors in the development and progression of prostate cancer. The identified polymorphisms might assist in developing better risk-assessment tools, as well as generating novel targeted therapies, especially for obese cancer patients with impaired leptin and adiponectin signaling.
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Affiliation(s)
- Meng-Bo Hu
- Department of Urology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Hua Xu
- Department of Urology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Ji-Meng Hu
- Department of Urology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Wen-Hui Zhu
- Department of Urology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Tian Yang
- Department of Urology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Hao-Wen Jiang
- Department of Urology, Huashan Hospital, Fudan University, Shanghai 200040, China
| | - Qiang Ding
- Department of Urology, Huashan Hospital, Fudan University, Shanghai 200040, China
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Liu TZ, Guo ZQ, Wang T, Cao Y, Huang D, Wang XH. Meta-analysis of the role of IL-6 rs1800795 polymorphism in the susceptibility to prostate cancer: Evidence based on 17 studies. Medicine (Baltimore) 2017; 96:e6126. [PMID: 28296724 PMCID: PMC5369879 DOI: 10.1097/md.0000000000006126] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Playing critical roles in immune responses, interleukin-6 (IL-6) has been proposed to be involved in the development of multiple cancers, including prostate cancer. The rs1800795 polymorphism in the promoter of the gene IL-6 can affect the transcription and expression of the gene, becoming a common target in association studies on tumors. We therefore carried out this meta-analysis to further discuss the relationship of this polymorphism with the risk of prostate cancer.Relevant publications were retrieved from the electronic databases. The strength of the correlation between IL-6 rs1800795 polymorphism and prostate cancer risk was evaluated using pooled odds ratios (ORs) with their 95% confidence intervals (95% CIs). Q test was adopted to examine between-study heterogeneity, with P < 0.05 as significant level. Subgroup and meta-regression analyses were conducted to explore potential source of heterogeneity. Sensitivity analysis was implemented to test the statistical stability of the final results. In addition, funnel plot and Egger test were employed to inspect publication bias among included studies.A total of 13 132 cases and 15 282 controls were ultimately incorporated into the present study. Overall estimates revealed no significant relationship between IL-6 rs1800795 polymorphism and prostate cancer risk in total analysis, but a risk-increasing effect of the polymorphism was detected in African-American subgroup under CC versus GG and CC versus GG + GC contrasts (OR 3.43, 95% CI 1.01-11.71; OR 3.51, 95% CI 1.04-11.82) after subgroup analysis by ethnicity.IL-6 rs1800795 polymorphism may enhance the susceptibility to prostate cancer in African-American men.
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Affiliation(s)
| | | | | | - Yue Cao
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Di Huang
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
| | - Xing-Huan Wang
- Department of Urology
- Center for Evidence-Based and Translational Medicine, Zhongnan Hospital of Wuhan University, Wuhan, China
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18
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Zhang K, Zhang L, Zhou J, Hao Z, Fan S, Yang C, Liang C. Association between interleukin-6 polymorphisms and urinary system cancer risk: evidence from a meta-analysis. Onco Targets Ther 2016; 9:567-77. [PMID: 26869801 PMCID: PMC4734788 DOI: 10.2147/ott.s94348] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Background Interleukin-6 (IL-6) is a multifunctional proinflammatory cytokine involved in cancer initiation and progression. Numerous studies have investigated the associations between IL-6 polymorphisms (IL-6 −174G>C, −592G>C, −597G>A) and risk of urinary system cancers, including prostate cancer, bladder cancer, and renal cell cancer. However, conclusions from these studies were controversial. Thus, we conducted the current meta-analysis to obtain the comprehensive profile regarding the association between IL-6 polymorphisms and urinary system cancer risk. Methods According to inclusion and exclusion criteria, the associations of IL-6 polymorphisms with urinary system cancer were searched from database and analyzed using STATA 12.0 statistical software. Odds ratios (ORs) with 95% confidence intervals (CIs) were used to assess the strength of the associations. Results A total of 20 previous publications consisting of 15,033 cases and 17,655 controls were involved in this meta-analysis. Significant association was observed in overall population regarding IL-6 −592G>C polymorphisms (G vs C: OR =0.1.30, 95% CI =1.13−2.52; GG vs CC: OR =1.81, 95% CI =1.31−2.52; GG vs GC + CC: OR =1.33, 95% CI =1.02−1.75; GG + GC vs CC: OR =1.41, 95% CI =1.09−1.83). In the stratified analyses by ethnicity, the significant associations were found among Asian (GG vs CC: OR =1.89, 95% CI =1.34−2.66; GG + GC vs CC: OR =1.43, 95% CI =1.09−1.87) and Black population (GC vs CC: OR =0.20, 95% CI =0.05−0.82) rather than Caucasian men. Likewise, there were noticeable associations in almost all the other subanalyses such as cancer types, control sources, genotyped methods, and sample sizes. However, no significant associations were identified between any of IL-6 −174G>C polymorphisms with urinary system cancer, except for Asian population (G vs C: OR =0.81, 95% CI =0.70−0.95; GG vs CC: OR =0.51, 95% CI =0.35−0.74; GC vs CC: OR =0.49, 95% CI =0.33−0.72; GG + GC vs CC: OR =0.50, 95% CI =0.35−0.72; respectively). In addition, no significant associations were detected between IL-6 −597G>A polymorphism and urinary system cancer, regardless of whole or subgroups. Conclusion This meta-analysis presents a relatively comprehensive view of the associations between IL-6 polymorphism and urinary system cancer risk to explore the carcinogenic mechanisms, which will help shed light on the clinical diagnosis and therapy for urinary system cancer. However, further detailed studies are needed to verify our conclusion.
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Affiliation(s)
- Kaiping Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University and Institute of Urology, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Li Zhang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University and Institute of Urology, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Jun Zhou
- Department of Urology, The First Affiliated Hospital of Anhui Medical University and Institute of Urology, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Zongyao Hao
- Department of Urology, The First Affiliated Hospital of Anhui Medical University and Institute of Urology, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Song Fan
- Department of Urology, The First Affiliated Hospital of Anhui Medical University and Institute of Urology, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Cheng Yang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University and Institute of Urology, Anhui Medical University, Hefei, Anhui, People's Republic of China
| | - Chaozhao Liang
- Department of Urology, The First Affiliated Hospital of Anhui Medical University and Institute of Urology, Anhui Medical University, Hefei, Anhui, People's Republic of China
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19
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Gu CY, Li QX, Zhu Y, Wang MY, Shi TY, Yang YY, Wang JC, Jin L, Wei QY, Ye DW. Genetic variations of the ADIPOQgene and risk of prostate cancer in Chinese Han men. Asian J Androl 2015; 16:878-83. [PMID: 25038177 PMCID: PMC4236333 DOI: 10.4103/1008-682x.129939] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Adiponectin secreted by adipose tissue has been implicated in prostate carcinogenesis. Genetic variations in ADIPOQ are thought to influence the activity of adiponectin, thus relating to cancer occurrence. In this hospital-based case-control study of 917 prostate cancer (PCa) cases and 1036 cancer-free controls, we evaluated the association of single nucleotide polymorphisms in ADIPOQ with risk of PCa and adiponectin levels in Chinese Han men. Variants of ADIPOQ were genotyped by Taqman polymerase chain reaction method. The plasma adiponectin concentrations were measured by enzyme-linked immunosorbent assay (ELISA) in a subset of cases and controls. We found that the ADIPOQ rs3774262 variant AA genotype was associated with both decreased PCa risk [adjusted odds ratio (OR): 0.66, 95% confidence interval (CI) =0.48–0.92] and increased plasma adiponectin levels (P = 0.036 and 0.043), with significant difference by tumor grade, clinical stage, and aggressiveness. A significant interaction between ADIPOQ rs3774262 and body mass index was observed in modifying the risk of PCa (P = 6.7 × 10−3). ADIPOQ rs266729 and rs182052 were not related to PCa risk or plasma adiponectin levels. Our data support that ADIPOQ rs3774262 may affect PCa risk in combination with plasma adiponectin levels in Chinese Han men. It may contribute to the molecular basis for the association between obesity and PCa.
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Affiliation(s)
| | | | | | | | | | | | | | | | - Qing-Yi Wei
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China; Duke Cancer Institute, Duke University Medical Center, Durham, North Carolina, USA, China
| | - Ding-Wei Ye
- Department of Urology, Fudan University Shanghai Cancer Center; Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China, China
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20
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Zhang G, Gu C, Zhu Y, Luo L, Dong D, Wan F, Zhang H, Shi G, Sun L, Ye D. ADIPOQ polymorphism rs182052 is associated with clear cell renal cell carcinoma. Cancer Sci 2015; 106:687-691. [PMID: 25827778 PMCID: PMC4471788 DOI: 10.1111/cas.12664] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2015] [Revised: 03/15/2015] [Accepted: 03/24/2015] [Indexed: 12/12/2022] Open
Abstract
Recent studies have indicated that low circulating adiponectin concentrations are associated with a higher risk of several cancers, including renal cell carcinoma. In this case–control study, we examined the frequency of single nucleotide polymorphisms (rs182052G>A, rs266729C>G, and rs3774262G>A) in the adiponectin gene (ADIPOQ) in 1004 patients with clear cell renal cell carcinoma (ccRCC) compared with a group of healthy subjects (n = 1108). Fasting serum adiponectin concentrations were also examined. Logistic regression models were used to estimate odds ratios (OR) and 95% confidence intervals (95% CI). The association of serum adiponectin concentration with genetic variants was calculated using a multivariate linear regression model. A significantly higher ccRCC risk was associated with the rs182052 variant A allele (adjusted OR, 1.36 and 95% CI, 1.07–1.74 for AA vs GG, P = 0.013; adjusted OR, 1.27 and 95% CI, 1.04–1.56 for AA vs GG+AG, P = 0.019), and this positive association was more evident in overweight subjects. Fasting serum adiponectin was lower in subjects carrying A alleles of rs182052 in both ccRCC patients (β = −0.399, P = 0.018) and healthy controls (β = −0.371, P = 0.024). These results suggest that ADIPOQ rs182052 is significantly associated with ccRCC risk. In this case–control study, we examined the frequency of single nucleotide polymorphisms (rs182052G>A, rs266729C>G, and rs3774262G>A) in the adiponectin gene (ADIPOQ) in 1004 patients with clear cell RCC (ccRCC) compared with a group of healthy subjects (n = 1108). Fasting serum adiponectin concentrations were also examined. Fasting serum adiponectin was lower in subjects carrying minor alleles of rs182052 in both ccRCC patients (β = −0.399, P = 0.018) and healthy controls (β = −0.371, P = 0.024). These results suggest that ADIPOQ rs182052 is significantly associated with ccRCC risk.
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Affiliation(s)
- Guiming Zhang
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Chengyuan Gu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Yao Zhu
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Lei Luo
- Department of Urology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Dahai Dong
- Department of Urology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Fangning Wan
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Hailiang Zhang
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Guohai Shi
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Lijiang Sun
- Department of Urology, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Dingwei Ye
- Department of Urology, Fudan University Shanghai Cancer Center, Shanghai, China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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Liu Y, Wu H, Zhu Y, Gao Y. Genetic association between leptin-2548G/A polymorphism and risk of cancer: a meta analysis. Int J Clin Exp Med 2015; 8:448-455. [PMID: 25785016 PMCID: PMC4358471] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2014] [Accepted: 12/01/2014] [Indexed: 06/04/2023]
Abstract
OBJECTIVE Abundance of evidence implicated that leptin may play a decisive role in cancer occurrence, but the reported results varied across the individually published studies. The objective of this study is to access to what extent the extensively studied -2548G/A polymorphism of LEP gene acts on the onset of multiple cancers. METHODS Eligible studies included in this meta-analysis were identified electronically in PubMed and Embase, and manually in relevant literature. Crude odds ratio (OR) with corresponding 95% confidence interval (CI) was calculated to estimate the risk of cancer associated with the -2548G/A polymorphism. RESULTS 12 association studies with a total of 5,618 cancer cases and 6,509 healthy controls were pooled into this meta-analysis. The results revealed that compared with the G allele, the A allele was associated with modestly increased risk of overall cancer (OR, 1.21; 95% CI, 1.02-1.44). Following further stratified analyses, a borderline association was indicated in prostate cancer (OR, 1.18; 95% CI, 1.00-1.39), breast cancer (OR, 1.11; 95% CI, 1.00-1.22) and Caucasians (OR, 1.19; 95% CI, 1.00-1.41). CONCLUSIONS This meta-analysis reveals that the A allele of -2548G/A polymorphism may be a determinant of cancer development.
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Affiliation(s)
- Yugang Liu
- Department of Orthopaedics, 401 Hospital of PLAQingdao 266071, Shandong Province, China
| | - Hongyan Wu
- Department of Obstetrics And Gynecology, General Hospital of Bei Jing Command of PLABeijing, China
| | - Yanpeng Zhu
- Department of General Surgery, 401 Hospital of PLAQingdao 266071, Shandong Province, China
| | - Yunshu Gao
- Department of Oncology, 401 Hospital of PLAQingdao 266071, Shandong Province, China
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Causal relevance of circulating adiponectin with cancer: a meta-analysis implementing Mendelian randomization. Tumour Biol 2014; 36:585-94. [DOI: 10.1007/s13277-014-2654-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 09/18/2014] [Indexed: 12/21/2022] Open
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Yang M, Li C, Li M. Association of interleukin-6 (-174 G/C) polymorphism with the prostate cancer risk: A meta-analysis. Biomed Rep 2014; 2:637-643. [PMID: 25054003 DOI: 10.3892/br.2014.300] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2014] [Accepted: 06/02/2014] [Indexed: 11/05/2022] Open
Abstract
The aim of the present study was to determine whether the interleukin-6 (IL-6) (-174 G/C) gene polymorphism correlates with prostate cancer. A meta-analysis based on former studies was conducted and the results suggest that there was no significant association between IL-6 (-174 G/C) polymorphism and the prostate cancer risk. However, a recent study published in January 2014 showed that the GG genotype may be associated with an increased risk of prostate cancer in Caucasian subjects, whereas the CC genotype was associated with an increased risk in the African-American subjects, which was inconsistent with former studies. Databases, including PubMed, Embase, Web of Science, the Cochrane Library, Chinese Biomedical Literature Database and Wanfang database, were searched between January 1994 and March 2014 to determine the eligible IL-6 (-174 G/C) polymorphism studies and the susceptibility of the prostate cancer risk. A total of 11 studies with 10,745 cases and 13,473 controls fulfilled the inclusion criteria subsequent to assessment by two investigators. The pooled odds ratio (OR) with 95% confidence interval (95% CI) was calculated to examine the associations, and subgroup analyses were performed according to the ethnicity. Overall, no significant association was found between the IL-6 (-174 G/C) polymorphism and prostate cancer risk, whereas the subgroup analysis suggested that the association between the IL-6 (-174 G/C) polymorphism and prostate cancer was slightly significant under the homozygote (CC vs. GG: OR, 3.43; 95% CI, 1.01-11.71; P=0.049) and recessive models (CC vs. GG/GC OR, 3.51; 95% CI, 1.04-11.82; P=0.042) in African-American patients. However, no significant association was found in the Caucasian, Asian or mixed populations under the five genetic models by stratifying studies for ethnicity. In conclusion, the present study suggested that there was no significant association between the IL-6 (-174 G/C) polymorphism and prostate cancer risk in Caucasian and Asian patients, whereas the CC genotype may be associated with an increased risk in the African-American patients.
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Affiliation(s)
- Mingyuan Yang
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai 200438, P.R. China
| | - Chao Li
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai 200438, P.R. China
| | - Ming Li
- Department of Orthopedics, Changhai Hospital, Second Military Medical University, Shanghai 200438, P.R. China
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Liu P, Shi H, Huang C, Shu H, Liu R, Yang Y, Gong J, Yang Y, Cai M. Association of LEP A19G polymorphism with cancer risk: a systematic review and pooled analysis. Tumour Biol 2014; 35:8133-41. [PMID: 24845032 DOI: 10.1007/s13277-014-2088-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 05/12/2014] [Indexed: 01/03/2023] Open
Abstract
The results from the published studies on the association between leptin (LEP) genetic polymorphism and cancer risk are conflicting. The common A19G (rs2167270) genetic polymorphism has been reported to be functional and may contribute to genetic susceptibility to cancers. However, the association between LEP A19G (rs2167270) genetic polymorphism and cancer risk remains inconclusive. To better understand the role of LEP A19G (rs2167270) genetic polymorphism in global cancer, we conducted this comprehensive meta-analysis encompassing 5,679 cases and 7,443 controls. Overall, the LEP A19G (rs2167270) genetic polymorphism was associated with lower cancer risk. In the stratified analysis, significant associations were found between the LEP A19G (rs2167270) genetic polymorphism and colorectal cancer and non-Hodgkin's lymphoma. For colorectal cancer, there was no significant association of LEP A19G (rs2167270) variant with this disease under heterozygous codominant model [odds ratio (OR) = 1.11 (0.97-1.27)], dominant genetic model [OR = 1.03 (0.91-1.17)], and additive genetic model [OR = 0.94 (0.86-1.03)]; however, there was a marginal association under homozygous codominant model [OR = 0.80 (0.66-0.97)] and recessive genetic model [OR = 0.75 (0.63-0.90)]. For non-Hodgkin's lymphoma, there was a significant association of LEP A19G (rs2167270) variant with the disease under homozygous codominant model [OR = 0.74 (0.59-0.94)], recessive genetic model [OR = 0.76 (0.61-0.94)], and additive genetic model [OR = 0.89 (0.80-0.99)], but not under heterozygous codominant model [OR = 0.95 (0.82-1.10)] and dominant genetic model [OR = 0.91 (0.79-1.04)]. Moreover, a significantly decreased cancer risk was found in recessive genetic model among Latin American population. When stratified by study design, significantly elevated susceptibility to cancer was not found among any studies. No significantly differences in genotype method and sample size in cases were found among genotypes. These findings suggest that the LEP A19G (rs2167270) genetic polymorphism may decrease the susceptibility to cancers in colorectal cancer and non-Hodgkin's lymphoma, when assuming a homozygote codominant model and a recessive genetic model among Latin American population. The phenomenon also indicates that the SNP functions as a recessive mutation, which needs to be verified or linked with functional studies.
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Affiliation(s)
- Pengcheng Liu
- Department of Orthopaedics, Shanghai Tenth People's Hospital, School of Medicine, Tongji University, Shanghai, China
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Li Q, Ma Y, Sang W, Cui W, Li X, Liu X, Zhang W. Five common haplotype-tagging variants of adiponectin (ADIPOQ) and cancer susceptibility: a meta-analysis. Genet Test Mol Biomarkers 2014; 18:417-24. [PMID: 24720830 DOI: 10.1089/gtmb.2013.0493] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
AIMS The relationship between common haplotype-tagging polymorphisms (rs266729 [11365C>G], rs822395 [-4034A>C], rs822396 [-3964A>G], rs2241766 [45T>G], and rs1501299 [276G>T]) in the ADIPOQ gene and cancer risk has been investigated in different ethnic groups; however, these studies have yielded contradictory results. With this in mind, this meta-analysis was performed in an attempt to draw a more precise conclusion regarding the association between ADIPOQ polymorphisms and cancer risk. RESULTS In this study, with a total of 19 eligible articles consisting of 52 studies, the pooled odds ratios (ORs) for the association between ADIPOQ rs1501299 and cancer risk were statistically significant (dominant model, TT/GT vs. GG, OR=0.84, 95% confidence interval [CI]: 0.77-0.92; homozygous model, TT vs. GG, OR=0.80, 95% CI: 0.68-0.94). These results suggested that ADIPOQ rs1501299 might be a protection-associated polymorphism in cancer. The stratified analyses indicated that the variant T allele of ADIPOQ rs1501299 was associated with decreased risk of cancer in both Caucasian and Asian populations when compared with the G allele. No significant association for the rest of the polymorphisms was observed under any genetic model. CONCLUSIONS This meta-analysis suggests that the ADIPOQ rs1501299 may be a protective factor for carcinogenesis.
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Affiliation(s)
- Qiaoxin Li
- 1 Department of Pathology, First Affiliated Hospital, Xinjiang Medical University , Urumqi, China
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Ma L, Zhao J, Li T, He Y, Wang J, Xie L, Qin X, Li S. Association between tumor necrosis factor-alpha gene polymorphisms and prostate cancer risk: a meta-analysis. Diagn Pathol 2014; 9:74. [PMID: 24666463 PMCID: PMC3977697 DOI: 10.1186/1746-1596-9-74] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2013] [Accepted: 03/23/2014] [Indexed: 12/17/2022] Open
Abstract
BACKGROUND Tumor necrosis factor-alpha (TNF-α) is an important inflammatory cytokine that may play a role in controlling the progression of prostate cancer. Two common polymorphisms in the TNF-α gene, -308G/A and -238C/T, have been suggested to alter the risk for prostate cancer, but the results have been inconclusive so far. In order to obtain a better understanding of the effects of these two polymorphisms on prostate cancer risk, all available studies were considered in a meta-analysis. METHODS We conducted a comprehensive literature search in the Cochrane Library, PubMed, EMBASE, Chinese Biomedical Literature database (CBM), and the China National Knowledge Infrastructure (CNKI). The associations were evaluated by calculating the pooled odds ratio (OR) with 95% confidence interval (95% CI). RESULTS In this meta-analysis, we included 14 studies with 5,757 patients and 6,137 control subjects for the TNF-α-308G/A polymorphism and 1,967 patients and 2,004 control subjects for the TNF-α-238C/T polymorphism. A significantly increased prostate cancer risk was found to be associated with the TNF-α-308C/T polymorphism in studies with healthy volunteers (AA + AG vs. GG: OR = 1.531, 95% CI = 1.093-2.145; P = 0.013; AG vs. GG: OR = 1.477, 95% CI = 1.047-2.085; P = 0.026). No significant association was found between the TNF-α-238G/A polymorphism and prostate cancer risk in the overall or subgroup analyses. There was no risk of publication bias in this meta-analysis. CONCLUSIONS Our results suggest that while the TNF-α-238G/A polymorphism may not be associated with prostate cancer the TNF-α-308C/T polymorphism may significantly contribute to prostate cancer susceptibility in healthy volunteers. VIRTUAL SLIDES The virtual slide(s) for this article can be found here: http://www.diagnosticpathology.diagnomx.eu/vs/1629288120116301.
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Affiliation(s)
| | | | | | | | | | | | - Xue Qin
- Department of Clinical Laboratory, First Affiliated Hospital of Guangxi Medical University, Nanning, Guangxi Zhuang Autonomous Region 530021, China.
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He J, Xi B, Ruiter R, Shi TY, Zhu ML, Wang MY, Li QX, Zhou XY, Qiu LX, Wei QY. Association of LEP G2548A and LEPR Q223R polymorphisms with cancer susceptibility: evidence from a meta-analysis. PLoS One 2013; 8:e75135. [PMID: 24146750 PMCID: PMC3798550 DOI: 10.1371/journal.pone.0075135] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2013] [Accepted: 08/12/2013] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Numerous epidemiological studies have examined associations of genetic variations in LEP (G2548A, -2548 nucleotide upstream of the ATG start site) and LEPR (Q223R, nonsynonymous SNP in exon 6) with cancer susceptibility; however, the findings are inconsistent. Therefore, we performed a meta-analysis to comprehensively evaluate such associations. METHODS We searched published literature from MEDLINE, EMBASE, Web of Science and CBM for eligible publications. We also assessed genotype-based mRNA expression data from HapMap for rs7799039 (G2548A) and rs1137101 (Q223R) in normal cell lines derived from 270 subjects with different ethnicities. RESULTS The final analysis included 16 published studies of 6569 cases and 8405 controls for the LEP G2548A and 19 studies of 7504 cases and 9581 controls for the LEPR Q223R. Overall, LEP G2548A was statistically significantly associated with an increased risk of overall cancer (AA vs. GG: OR=1.27, 95% CI=1.05-1.54; recessive model: OR=1.19, 95% CI=1.00-1.41). Further stratifications by cancer type showed an increased risk for prostate cancer (recessive model: OR=1.26, 95% CI=1.05-1.51) but not for other cancers. For LEPR Q223R, no statistical evidence for an association with risk of cancer was found for all; however, further stratification by ethnicity showed an increased risk for Africans but not for other ethnicities. No significantly differences in LEP and LEPR mRNA expression were found among genotypes or by ethnicity. CONCLUSIONS Despite some limitations, this meta-analysis found some statistical evidence for an association between the LEP 2548AA genotype and overall risk of cancer, particularly for prostate cancer, but given this variant did not have an effect on mRNA expression, this association warrants additional validation in large and well-designed studies.
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Affiliation(s)
- Jing He
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Bo Xi
- Institute of Maternal and Child Health Care, School of Public Health, Shandong University, Jinan, China
| | - Rikje Ruiter
- Department of Epidemiology, Erasmus MC, Rotterdam, The Netherlands
| | - Ting-Yan Shi
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Mei-Ling Zhu
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Meng-Yun Wang
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Qiao-Xin Li
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Xiao-Yan Zhou
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Pathology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Li-Xin Qiu
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
| | - Qing-Yi Wei
- Cancer Institute, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Houston, Texas, United States of America
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He J, Xu G. LEP gene variant is associated with prostate cancer but not with colorectal cancer. Tumour Biol 2013; 34:3131-6. [PMID: 23754448 DOI: 10.1007/s13277-013-0881-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2013] [Accepted: 05/22/2013] [Indexed: 01/24/2023] Open
Abstract
The leptin (LEP) gene has been considered to be implicated in the development of cancer. However, the results have been inconsistent. In this study, we performed a meta-analysis to clarify the association of LEP rs7799039 variant with colorectal and prostate cancer risk. Published literatures from PubMed and Embase were retrieved. Pooled odds ratio (OR) with 95 % confidence interval (CI) was calculated using fixed or random effects model. A total of five studies (2,596 colorectal cancer cases and 3,240 controls) for association of LEP rs7799039 variant with colorectal cancer, and three studies (1,343 prostate cancer cases and 1,238 controls) for association with prostate cancer were included in the meta-analysis. For colorectal cancer, there was no significant association of LEP rs7799039 variant with this disease under homogeneous co-dominant model (OR = 0.88, 95 % CI = 0.75-1.02), heterogeneous co-dominant model (OR = 1.00, 95 % CI = 0.89-1.13) and dominant model (OR = 0.97, 95 % CI = 0.87-1.08); however, there was a marginal association under recessive model (OR = 0.87, 95 % CI = 0.76-0.99). For prostate cancer, there was significant association of LEP rs7799039 variant with this disease under homogeneous co-dominant model (OR = 1.33, 95 % CI = 1.06-1.67) and recessive model (OR = 1.26, 95 % CI = 1.05-1.51), but not under heterogeneous co-dominant model (OR = 1.24, 95 % CI = 0.87-1.77) and dominant model (OR = 1.30, 95 % CI = 1.84). The present meta-analysis demonstrated that the LEP rs7799039 variant was associated with prostate cancer, but not with colorectal cancer.
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Affiliation(s)
- Juan He
- Department of Pharmacy, Kunming General Hospital of Chengdu Military Command, Kunming, 650032, China
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Yang Y, Zhang F, Ding R, Skrip L, Wang Y, Lei H, Hu D. ADIPOQ gene polymorphisms and cancer risk: a meta-analysis. Cytokine 2013; 61:565-571. [PMID: 23200411 DOI: 10.1016/j.cyto.2012.10.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2012] [Revised: 09/11/2012] [Accepted: 10/31/2012] [Indexed: 01/21/2023]
Abstract
The results of studies investigating the association between ADIPOQ gene polymorphisms and risk of cancer have been inconsistent and often contradictory. The present meta-analysis was conducted in order to overcome the limitations of any individual study and to provide a more precise overall effect estimate. Relevant studies were identified by searching PubMed and Embase for articles published through May 2012. The strength of the relationship between the ADIPOQ gene and risk of cancer was assessed using odds ratios (ORs). Either a fixed-effects or a random-effects model was used to calculate the overall risk estimates. Fifteen studies were included and five SNPs were considered. A significant association was found between SNP rs2241766 and risk of cancer in the recessive genetic model (OR: 0.768, 95% CI: [0.626,0.942], P=0.011); a significant relationship was also found between SNP rs1501299 and risk of cancer in both an allele contrast (OR: 0.141, 95%CI: [0.113,0.176], P<0.001) and the dominant genetic model (OR: 0.904, 95%CI: [0.830,0.985], P=0.021); no association was found with the rs266729, rs822395, or rs822396 SNPs. Adjusted ORs were also considered, but no statistically significant association was found in homozygote contrasts for any of the five SNPs after adjustment. Our results suggest that two polymorphisms, SNP rs2241766 and SNP rs1501299, of the ADIPOQ gene may be associated with reduced risk of cancer. However, the overall strength of association is mild to moderate, and additional well-designed studies are needed to confirm the present conclusion.
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Affiliation(s)
- Yuan Yang
- First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
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Touvier M, Fezeu L, Ahluwalia N, Julia C, Charnaux N, Sutton A, Méjean C, Latino-Martel P, Hercberg S, Galan P, Czernichow S. Association between prediagnostic biomarkers of inflammation and endothelial function and cancer risk: a nested case-control study. Am J Epidemiol 2013; 177:3-13. [PMID: 23171880 DOI: 10.1093/aje/kws359] [Citation(s) in RCA: 96] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Experimental and prevalent case-control studies suggest an association between biomarkers of inflammation, endothelial function, and adiposity and cancer risk, but results from prospective studies have been limited. The authors' objective was to prospectively examine the relations between these biomarkers and cancer risk. A nested case-control study was designed within the Supplémentation en Vitamines et Minéraux Antioxydants (SU.VI.MAX) Study, a nationwide French cohort study, to include all first primary incident cancers diagnosed between 1994 and 2007 (n = 512). Cases were matched with randomly selected controls (n = 1,024) on sex, age (in 2-year strata), body mass index (weight (kg)/height (m)(2); <25 vs. ≥25), and SU.VI.MAX intervention group. Conditional logistic regression was used to study the associations between prediagnostic levels of high-sensitivity C-reactive protein (hs-CRP), adiponectin, leptin, soluble intercellular adhesion molecule 1 (sICAM-1), soluble vascular cell adhesion molecule 1, soluble E-selectin, and monocyte chemoattractant protein 1 and cancer risk. All statistical tests were 2-sided. Plasma sICAM-1 level was positively associated with breast cancer risk (for quartile 4 vs. quartile 1, multivariate odds ratio (OR) = 1.86, 95% confidence interval (CI): 1.06, 3.26; P(trend) = 0.048). Plasma hs-CRP level was positively associated with prostate cancer risk (for quartile 4 vs. quartile 1, multivariate OR = 3.04, 95% CI: 1.28, 7.23; P(trend) = 0.03). These results suggest that prediagnostic hs-CRP and sICAM-1 levels are associated with increased prostate and breast cancer risk, respectively.
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Affiliation(s)
- Mathilde Touvier
- Nutritional Epidemiology Unit, INSERM U557, Paris 13 University, 74 rue Marcel Cachin, F-93017 Bobigny, France.
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Abstract
CONTEXT Obesity and prostate cancer (PCa) affect substantial proportions of Western society. Mounting evidence, both epidemiologic and mechanistic, for an association between the two is of public health interest. An improved understanding of the role of this modifiable risk factor in PCa etiology is imperative to optimize screening, treatment, and prevention. OBJECTIVE To consolidate and evaluate the evidence for an epidemiologic link between obesity and PCa, in addition to examining the proposed underlying molecular mechanisms. EVIDENCE ACQUISITION A PubMed search for relevant articles published between 1991 and July 2012 was performed by combining the following terms: obesity, BMI, body mass index and prostate cancer risk, prostate cancer incidence, prostate cancer mortality, radical prostatectomy, androgen-deprivation therapy, external-beam radiation, brachytherapy, prostate cancer and quality of life, prostate cancer and active surveillance, in addition to obesity, BMI, body mass index and prostate cancer and insulin, insulin-like growth factor, androgen, estradiol, leptin, adiponectin, and IL-6. Articles were selected based on content, date of publication, and relevancy, and their references were also searched for relevant articles. EVIDENCE SYNTHESIS Increasing evidence suggests obesity is associated with elevated incidence of aggressive PCa, increased risk of biochemical failure following radical prostatectomy and external-beam radiotherapy, higher frequency of complications following androgen-deprivation therapy, and increased PCa-specific mortality, although perhaps a lower overall PCa incidence. These results may in part relate to difficulties in detecting and treating obese men. However, multiple molecular mechanisms could explain these associations as well. Weight loss slows PCa in animal models but has yet to be fully tested in human trials. CONCLUSIONS Obesity appears to be linked with aggressive PCa. We suggest clinical tips to better diagnose and treat obese men with PCa. Whether reversing obesity slows PCa growth is currently unknown, although it is an active area of research.
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Zhou W, Liu Y, Zhong DW. Adiponectin (ADIPOQ) rs2241766 G/T polymorphism is associated with risk of cancer: evidence from a meta-analysis. Tumour Biol 2012; 34:493-504. [PMID: 23143890 DOI: 10.1007/s13277-012-0574-1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Accepted: 10/24/2012] [Indexed: 12/15/2022] Open
Abstract
Associations between adiponectin (ADIPOQ) genetic polymorphisms (rs2241766 G/T and rs266729 G/C) and cancer risk have been extensively studied in the past decade, while conflicting results were reported. Therefore, this study would explore the associations by using a meta-analysis. The databases of Medline, Embase, and Wangfang were retrieved, and the latest updated time was 1 August 2012. Effect sizes of odds ratio and 95 % confidence interval (OR and 95 % CI) were calculated by using a fixed- or random-effect model. A total of 12 studies with 10,368 participants were identified for association between ADIPOQ rs2241766 G/T and risk of cancer, and ten studies with 12,665 participants were for association between ADIPOQ rs266729 G/C and risk of cancer. Overall combined analyses indicated that neither ADIPOQ rs2241766 G/T nor rs266729 G/C was associated with risk of cancer incidence (OR (95 % CI), 0.89 (0.61-1.30) for GG vs. TT and 0.94 (0.83-1.06) for G carriers vs. T carriers for rs2241766 G/T; 0.99 (0.85-1.16) for GG vs. CC and 0.96 (0.87-1.06) for G carriers vs. C carriers for rs266729 G/C). When stratified analyses were conducted according to the participants' ethnicity, sources of controls, types of cancer, and sample size, we found that G allele of ADIPOQ rs2241766 G/T was significantly associated with decreased risk of cancer based on population-based case-control studies (OR (95 % CI), 0.65 (0.50-0.85) for GG vs. TT and 0.88 (0.79-0.98) for G carriers vs. T carriers). In contrast, there was no association between rs266729 G/C polymorphism and risk of cancer when subgroup analyses were conducted. In summary, this meta-analysis indicated that ADIPOQ rs2241766 G/T rather than rs266729 G/C polymorphism was closely associated with risk of cancer development.
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Affiliation(s)
- Wei Zhou
- Department of Hepatobiliary Surgery, The Second Xiangya Hospital, Central South University, Renmin Road No.139, Changsha City, 410011, Hunan Province, China
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Interleukin-6 gene -174G>C and -636G>C promoter polymorphisms and prostate cancer risk. Mol Biol Rep 2012; 40:449-55. [PMID: 23073774 DOI: 10.1007/s11033-012-2079-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2012] [Accepted: 10/03/2012] [Indexed: 12/14/2022]
Abstract
Prostate cancer (PCa) is one of the most commonly diagnosed internal malignancies affecting men. Due to the important roles of IL-6 in different physiological and pathophysiological processes, IL-6 polymorphisms may modulate PCa risk. IL-6 -174 G>C (rs 1800795, also designated -236 G>C) and -636 G>C (rs 1800796, also designated -572 G>C) promoter polymorphisms have been implicated in PCa susceptibility, albeit still controversial. A literature search using PubMed and Highwire databases was conducted, resulting in eight case-control studies concerning the IL-6 -174 G>C polymorphism (11,613 PCa cases and 13,992 controls) and four case-control publications regarding the IL-6 -636 G>C polymorphism (1,941 PCa cases and 3,357 controls). In order to derive a more precise estimation, a meta-analysis based upon these selected case-control studies was performed. There was no significant association between IL-6 -174 G>C polymorphism and PCa increased risk. Nevertheless, the presence of allele C and the CC genotype were statistically significantly associated with decreased PCa risk in the overall analysis for IL-6 -636 G>C polymorphism. Additional studies in larger samples and analyses of functional repercussions of these SNPs in prostate tumor cells are necessary to validate these findings.
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Xu Y, He B, Pan Y, Gu L, Nie Z, Chen L, Li R, Gao T, Wang S. The roles of ADIPOQ genetic variations in cancer risk: evidence from published studies. Mol Biol Rep 2012; 40:1135-44. [PMID: 23065236 DOI: 10.1007/s11033-012-2154-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2012] [Accepted: 10/04/2012] [Indexed: 12/19/2022]
Abstract
Adiponectin produced by adipose tissue, which is involved in complex diseases related to obesity, such as cancer. Genetic variations in ADIPOQ are thought to influence the activity of adiponectin, thus relating to cancer occurrence. However, epidemiological results were inconsistent. To examine this controversy, we assessed reported studies of association between ADIPOQ polymorphisms and cancer risk. Relevant studies were selected by PUBMED, EMBASE update to January 12th, 2012. According to the acceptance and exclusion criteria, 15 studies involved three polymorphisms (rs266729, rs2241766, rs1501299) of ADIPOQ were included. Summary odds ratio (ORs) and 95 % confidence intervals (CIs) were calculated using random-effect or fixed-effect models based on the heterogeneity of included studies. A total of 15 case-control studies related rs266729 (5,615 cases and 6,425 controls), rs2241766 (5,318 cases and 6,118 controls) and rs1501299 (3,751 cases and 5,104 controls) were included to analyze the ADIPOQ polymorphisms and cancer risk. For rs1501299, T allele was associated with decreased cancer risk. In addition, cancer type subgroup analysis revealed T allele was associated with decreased colorectal and prostate cancer risk. Ethnicity subgroup analysis observed a decreased risk in both Asian and Caucasian descendents. As to rs2241766, a borderline decreased cancer risk was observed. This meta-analysis indicated T allele of rs1501299 was an obvious protection factor for cancer risk, and G allele of rs2241766 was a potential protection factor for cancer risk, especially in Caucasian descendents. Further studies should be performed to clarify the roles of ADIPOQ polymorphisms in the cancer risk.
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Affiliation(s)
- Yeqiong Xu
- Central Laboratory of Nanjing First Hospital, Nanjing Medical University, 68 Changle Road, Nanjing, 210006, China
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Amankwah EK, Sellers TA, Park JY. Gene variants in the angiogenesis pathway and prostate cancer. Carcinogenesis 2012; 33:1259-69. [PMID: 22523086 PMCID: PMC3405650 DOI: 10.1093/carcin/bgs150] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2011] [Revised: 04/09/2012] [Accepted: 04/10/2012] [Indexed: 01/24/2023] Open
Abstract
Although the causes of prostate cancer are still unknown, numerous studies support the role of genetic factors in the development and progression of this disease. Single nucleotide polymorphisms (SNPs) in key angiogenesis genes have been studied in prostate cancer. In this review, we provide an overview of the current knowledge of the role of genetic variants in the angiogenesis pathway in prostate cancer risk and progression. Of the 17 prostate cancer genome-wide association studies (GWAS) conducted to date, only one identified disease-associated SNPs in a region of an angiogenesis pathway gene. An association was observed between aggressive disease and three intergenic SNPs (rs11199874, rs10749408 and rs10788165) in a region on chromosome 10q26 that encompasses FGFR2. The majority (27/32, 84.4%) of primary candidate gene studies reviewed had a small (n < 800, 20/32, 62.5%) to medium sample size (n = 800-2000, 7/32, 21.9%), whereas only five (15.6%) had a large sample size (n ≥ 2000). Results from the large studies revealed associations with risk and aggressive disease for SNPs in NOS2A, NOS3 and MMP-2 and risk for HIF1-α. Meta-analyses have so far been conducted on FGFR2, TGF-β, TNF-α, HIF1-α and IL10 and the results reveal an association with risk for SNPs in FGFR2 and TGF-β and aggressive disease for SNPs in IL-10. Thus, existing evidence from GWAS and large candidate gene studies indicates that SNPs from a limited number of angiogenesis pathway genes are associated with prostate cancer risk and progression.
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Affiliation(s)
| | | | - Jong Y. Park
- Department of Cancer Epidemiology, Division of Cancer Prevention and Control, Moffitt Cancer Center, Tampa, FL, USA
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Ribeiro RJT, Monteiro CPD, Azevedo ASM, Cunha VFM, Ramanakumar AV, Fraga AM, Pina FM, Lopes CMS, Medeiros RM, Franco EL. Performance of an adipokine pathway-based multilocus genetic risk score for prostate cancer risk prediction. PLoS One 2012; 7:e39236. [PMID: 22792137 PMCID: PMC3387135 DOI: 10.1371/journal.pone.0039236] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Accepted: 05/17/2012] [Indexed: 12/25/2022] Open
Abstract
Few biomarkers are available to predict prostate cancer risk. Single nucleotide polymorphisms (SNPs) tend to have weak individual effects but, in combination, they have stronger predictive value. Adipokine pathways have been implicated in the pathogenesis. We used a candidate pathway approach to investigate 29 functional SNPs in key genes from relevant adipokine pathways in a sample of 1006 men eligible for prostate biopsy. We used stepwise multivariate logistic regression and bootstrapping to develop a multilocus genetic risk score by weighting each risk SNP empirically based on its association with disease. Seven common functional polymorphisms were associated with overall and high-grade prostate cancer (Gleason≥7), whereas three variants were associated with high metastatic-risk prostate cancer (PSA≥20 ng/mL and/or Gleason≥8). The addition of genetic variants to age and PSA improved the predictive accuracy for overall and high-grade prostate cancer, using either the area under the receiver-operating characteristics curves (P<0.02), the net reclassification improvement (P<0.001) and integrated discrimination improvement (P<0.001) measures. These results suggest that functional polymorphisms in adipokine pathways may act individually and cumulatively to affect risk and severity of prostate cancer, supporting the influence of adipokine pathways in the pathogenesis of prostate cancer. Use of such adipokine multilocus genetic risk score can enhance the predictive value of PSA and age in estimating absolute risk, which supports further evaluation of its clinical significance.
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Affiliation(s)
- Ricardo J T Ribeiro
- Molecular Oncology Group-CI, Portuguese Institute of Oncology, Porto, Portugal.
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Leze E, Alves-Pereira JL, Colli S, Cavalcante FS, José Sampaio F, da Fonte Ramos C. Leptin regulates proliferation and apoptosis in human prostate. ScientificWorldJournal 2012; 2012:842301. [PMID: 22654635 PMCID: PMC3354660 DOI: 10.1100/2012/842301] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2011] [Accepted: 01/03/2012] [Indexed: 01/19/2023] Open
Abstract
UNLABELLED This paper aimed to evaluate the leptin role on the cellular proliferation and the expression of fibroblast growth factor 2, aromatase enzyme, and apoptotic genes in the human prostate tissue. METHODS Fifteen samples of hyperplasic prostate tissue were divided in four symmetric parts maintained in RPMI medium supplemented with 10% fetal bovine serum, 1 ng/mL of gentamicin, and added with 50 ng/mL leptin (L) or not (C). After 3 hours of incubation, gene expression was evaluated by real time RT-PCR. Cellular proliferation was evaluated by immunohistochemistry for PCNA. RESULTS The leptin treatment led to an increase cellular proliferation (C = 21.8 ± 0.5; L = 64.8 ± 0.9; P < 0.0001) and in the expression of Bax (C = 0.4 ± 0.1; L = 0.9 ± 0.2; P < 0.05) while Bcl-2 (C = 19.9 ± 5.6; L = 5.6 ± 1.8; P < 0.05), Bcl-x (C = 0.2 ± 0.06; L = 0.07 ± 0.02; P < 0.05), and aromatase expressions (C = 1.9 ± 0.6; L = 0.4 ± 0.1; P < 0.04) were significantly reduced. CONCLUSION Leptin has an important role in maintaining the physiological growth of the prostate since it stimulates both cellular proliferation and apoptosis, with the decrement in the aromatase gene expression.
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Affiliation(s)
- Eduardo Leze
- Urogenital Research Unit, State University of Rio de Janeiro, 20551-030 Rio de Janeiro, RJ, Brazil
| | - Jorge Luiz Alves-Pereira
- Urogenital Research Unit, State University of Rio de Janeiro, 20551-030 Rio de Janeiro, RJ, Brazil
| | - Sicilia Colli
- Urogenital Research Unit, State University of Rio de Janeiro, 20551-030 Rio de Janeiro, RJ, Brazil
| | | | - Francisco José Sampaio
- Urogenital Research Unit, State University of Rio de Janeiro, 20551-030 Rio de Janeiro, RJ, Brazil
| | - Cristiane da Fonte Ramos
- Urogenital Research Unit, State University of Rio de Janeiro, 20551-030 Rio de Janeiro, RJ, Brazil
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Zhang H, Xu Y, Li L, Liu R, Ma B. The interleukin-6 -174G/C polymorphism and prostate cancer risk: a systematic review and meta-analysis. Urol Int 2012; 88:447-53. [PMID: 22516897 DOI: 10.1159/000335207] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2011] [Accepted: 11/20/2011] [Indexed: 01/05/2023]
Abstract
OBJECTIVE This systematic review and meta-analysis was undertaken to integrate previous findings and summarize the effect size of the association of interleukin-6 (IL-6) genetic polymorphism -174G/C with susceptibility to prostate cancer (PCa). METHODS All eligible studies of IL-6 -174G/C polymorphism and PCa risk were collected from the following electronic databases: PubMed and the Cochrane Library, with the last report up to June 1, 2011. Statistical analyses were performed by Review Manage version 5.0 and Stata 10.0. RESULTS A total of 7 independent studies, including 9,959 cases and 12,361 controls, were identified. When all studies were pooled, we did not detect a significant association of -174G/C polymorphism with PCa risk. When stratifying for race, similar results were obtained; evidence of a significant relation was absent in both Caucasians and the mixed population. After stratifying the studies by study types, -174G/C polymorphism was significantly associated with PCa risk when examining the contrast of CC + GC versus GG (OR = 1.44, 95% CI = 1.05-1.98, p = 0.03) in cohort studies but not in case-control studies. CONCLUSIONS Our review suggest that -174G/C polymorphism is associated with an increased PCa risk in two cohort studies from one article. Additional well-designed studies are warranted to validate these findings.
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Affiliation(s)
- Hongtuan Zhang
- Department of Urology, Second Hospital of Tianjin Medical University, Tianjin Institute of Urology, Tianjin, PR China
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Bi P, Kuang S. Meat Science and Muscle Biology Symposium: stem cell niche and postnatal muscle growth. J Anim Sci 2012; 90:924-35. [PMID: 22100594 PMCID: PMC3437673 DOI: 10.2527/jas.2011-4594] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Stem cell niche plays a critical role in regulating the behavior and function of adult stem cells that underlie tissue growth, maintenance, and regeneration. In the skeletal muscle, stem cells, called satellite cells, contribute to postnatal muscle growth and hypertrophy, and thus, meat production in agricultural animals. Satellite cells are located adjacent to mature muscle fibers underneath a sheath of basal lamina. Microenvironmental signals from extracellular matrix mediated by the basal lamina and from the host myofiber both impinge on satellite cells to regulate their activity. Furthermore, several types of muscle interstitial cells, including intramuscular preadipocytes and connective tissue fibroblasts, have recently been shown to interact with satellite cells and actively regulate the growth and regeneration of postnatal skeletal muscles. From this regard, interstitial adipogenic cells are not only important for marbling and meat quality, but also represent an additional cellular component of the satellite cell niche. At the molecular level, these interstitial cells may interact with satellite cells through cell surface ligands, such as delta-like 1 homolog (Dlk1) protein whose overexpression is thought to be responsible for muscle hypertrophy in callipyge sheep. In fact, extracellular Dlk1 protein has been shown to promote the myogenic differentiation of satellite cells. Understanding the cellular and molecular mechanisms within the stem cell niche that regulate satellite cell differentiation and maintain muscle homeostasis may lead to promising approaches to optimizing muscle growth and composition, thus improving meat production and quality.
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Affiliation(s)
- P. Bi
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907
| | - S. Kuang
- Department of Animal Sciences, Purdue University, West Lafayette, IN 47907
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Chen X, Xiang YB, Long JR, Cai H, Cai Q, Cheng J, Wen W, Gao YT, Zheng W, Shu XO. Genetic polymorphisms in obesity-related genes and endometrial cancer risk. Cancer 2011; 118:3356-64. [PMID: 22038736 DOI: 10.1002/cncr.26552] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2011] [Revised: 04/15/2011] [Accepted: 05/23/2011] [Indexed: 02/06/2023]
Abstract
BACKGROUND Obesity is associated with circulating levels of adiponectin and leptin and endometrial cancer risk. Little is known about whether single nucleotide polymorphisms (SNPs) in the genes that encode adiponectin (ADIPOQ), leptin (LEP), adiponectin receptor 1 (ADIPOR1), adiponectin receptor 2 (ADIPOR2), and leptin receptor (LEPR) are associated with endometrial cancer. METHODS The authors selected 87 tagging SNPs to capture common genetic variants in these 5 genes. These SNPs were evaluated in 1028 endometrial cancer cases and 1932 community controls recruited from Chinese women. Logistic regression models were used to estimate odds ratios (ORs) and 95% confidence intervals (95% CIs). RESULTS Three of the 10 SNPs evaluated in the ADIPOQ gene were significantly associated with reduced cancer risk. The OR for women homozygous for the minor allele (A/A) for rs3774262 was 0.68 (95% CI, 0.48-0.97) compared with women homozygous for the major allele (G/G). Similar results were found for SNPs rs1063539 and rs12629945 in ADIPOQ, which were in linkage disequilibrium with rs3774262. These associations became nonsignificant after Bonferroni correction was applied. Controls with the minor allele A at rs3774262 had lower weight, smaller waist and hip circumferences, and lower body mass index than controls with the major allele G (all P < .05). Women homozygous for the minor allele (T/T) of rs2071045 in the LEP gene also had significantly lower risk (OR, 0.70; 95% CI, 0.54-0.90) than women homozygous for the major allele (C/C). No other SNPs in the LEP, ADIPOR1, ADIPOR2, or LEPR genes were found to be associated with cancer risk. CONCLUSIONS Although a chance finding cannot be ruled out, the consistency of findings for gene-endometrial cancer risk and gene-obesity measurements suggests that genetic polymorphisms in the ADIPOQ gene may play a role in endometrial cancer development.
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Affiliation(s)
- Xiaoli Chen
- Vanderbilt Epidemiology Center, Institute for Medicine and Public Health, Vanderbilt University Medical Center, Nashville, Tennessee 37203-1738, USA
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Dhillon PK, Penney KL, Schumacher F, Rider JR, Sesso HD, Pollak M, Fiorentino M, Finn S, Loda M, Rifai N, Mucci LA, Giovannucci E, Stampfer MJ, Ma J. Common polymorphisms in the adiponectin and its receptor genes, adiponectin levels and the risk of prostate cancer. Cancer Epidemiol Biomarkers Prev 2011; 20:2618-27. [PMID: 21960694 DOI: 10.1158/1055-9965.epi-11-0434] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
BACKGROUND Adiponectin, an insulin-sensitizing adipokine, is inversely associated with adiposity and prostate cancer risk and progression. However, the role of genetic variation in the adiponectin (ADIPOQ) and receptor genes (ADIPOR1/R2) in prostate cancer is largely unknown. METHODS In a nested case-control study of 1,286 cases and 1,267 controls within the Physicians' Health Study, we evaluated 29 common single-nucleotide polymorphisms (SNP) in ADIPOQ (n = 13), ADIPOR1 (n = 5), and ADIPOR2 (n = 11) in relation to the risk of prostate cancer. In subgroups, we also evaluated the association of genotype and circulating adiponectin levels (n = 951) and prostate tumor expression of insulin receptor (IR) and insulin-like growth factor 1 (IGF-IR) receptor (n = 181). RESULTS Among the 12 tagging polymorphisms in ADIPOQ, four (rs266729, rs182052, rs822391, and rs2082940) were significantly associated (P < 0.05) with overall prostate cancer risk, with no significant difference by tumor grade or clinical stage. Two of the risk SNPs (rs266729 and rs182052) plus four other SNPs (rs16861209, rs17366568, rs3774261, and rs7639352) were also associated with plasma adiponectin levels, and three of these (rs1686109, rs17366568, and rs3774261) were also significantly associated with IR expression in prostate tumor tissue. One additional SNP was associated with IGFI-R tumor tissue expression (rs16861205). None of the 16 variants in ADIPOR1/R2 were related to cancer risk or circulating adiponectin levels. CONCLUSIONS Common variants in the adiponectin gene were associated with prostate cancer risk, plasma adiponectin levels, and IR or IGF-IR expression in the prostate tumor. IMPACT These genotype-phenotype associations support the biological relevance of adiponectin for prostate carcinogenesis, particularly in earlier stages of development.
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Affiliation(s)
- Preet K Dhillon
- Channing Laboratory, Brigham and Women's Hospital and Harvard Medical School Boston, MA, USA
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He B, Pan Y, Zhang Y, Bao Q, Chen L, Nie Z, Gu L, Xu Y, Wang S. Effects of genetic variations in the adiponectin pathway genes on the risk of colorectal cancer in the Chinese population. BMC MEDICAL GENETICS 2011; 12:94. [PMID: 21749709 PMCID: PMC3166913 DOI: 10.1186/1471-2350-12-94] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/20/2010] [Accepted: 07/12/2011] [Indexed: 12/14/2022]
Abstract
Background Decreased expression of adiponectin (ADIPOQ) is associated with an increased risk for developing colorectal cancer (CRC) in humans. This study was designed to determine whether polymorphisms present in the ADIPOQ and its type 1 receptor (ADIPOR1) could affect the risk of CRC. Methods We measured five polymorphisms in the ADIPOQ and two polymorphisms in ADIPOR1, and analyzed their associations with CRC risk in 420 CRC patients and 555 age- and gender-matched healthy individuals. Results Multivariate logistic regression analyses revealed that the CRC risks (adjusted odds ratio and 95% confidence interval) associated with the ADIPOR1 genotypes were 0.53 (95% CI, 0.35-0.81) for rs12733285C/T, 0.59 (95% CI, 0.45-0.78) for rs1342387A/G, and 0.59 (95% CI, 0.39-0.89) for rs1342387A/A, respectively. Furthermore, the risks were more significant in carriers of the allele A of rs1342387A/G (adjusted OR, 0.59; 95% CI, 0.46-0.77) than noncarriers (G/G). In a further subgroup analysis, we observed that rs266729G/C was associated with an increased risk for colon cancer (adjusted OR, 1.50; 95% CI, 1.05-2.14) but not for rectal cancer (adjusted OR, 0.88; 95% CI, 0.63-1.22), and that carriers of the G allele had an increased risk for developing colon cancer (adjusted OR, 1.45; 95% CI, 1.03-2.05). Conclusions We conclude that the rs12733285C/T genotype and the carriage of the A allele of rs1342387 (A/G or A/A) in ADIPOR1 are the protective factors for CRC, while that rs266729G/C and G allele of ADIPOQ are the risk factors for colon cancer after excluding rectal cancer cases.
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Affiliation(s)
- Bangshun He
- The Central Laboratory of Nanjing First Hospital Affiliated to Nanjing Medical University, Nanjing 210006, Jiangsu Province, China
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Wang J, Cao C, Luo H, Xiong S, Xu Y, Xiong W. Tumour necrosis factor alpha -308G/A polymorphism and risk of the four most frequent cancers: a meta-analysis. Int J Immunogenet 2011; 38:311-20. [PMID: 21624061 DOI: 10.1111/j.1744-313x.2011.01014.x] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The latest data show that breast, prostate, lung and colorectal cancer are the four most frequent cancers in both sexes worldwide. A number of molecular epidemiological studies have been conducted to examine the association between TNF alpha -308G/A and the risk of those cancers. However the results have been inconclusive or inconsistent. We then performed a meta-analysis to derive a precise estimation of this association. We carried out a comprehensive search in Medline, EMBASE, OVID and Chinese Biomedical Literature Database for studies using related keywords. The inclusion criteria were (i) in English or Chinese; (ii) case-control study on this association; (iii) provide usable genotype frequencies; and (iv) sufficient published data for estimating an odds ratio (OR) with 95% confidence interval (CI). ORs and 95% CIs were calculated to assess the strength of this association under homozygote comparison (AA vs GG), heterozygote comparison (GA vs GG), dominant (AA/GA vs GG) and recessive (AA vs GA/GG) genetic model comparison. Thirty case-control studies with a total number of 16,507 cases and 19,749 controls were selected for analysis. Overall, no significant association was found between this polymorphism and the risk of total four cancers (GA vs GG: OR=1.02, 95% CI=0.91-1.14, P=0.78). However, there was a significant association between this polymorphism and breast cancer risk in western populations (GA vs GG: OR=0.91, 95% CI=0.85-0.96, P=0.002). This meta-analysis also revealed that this polymorphism was not associated with susceptibility to the other three cancers.
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Affiliation(s)
- J Wang
- Department of Respiratory Diseases, Tongji Hospital, Key Laboratory of Pulmonary Diseases of Health Ministry, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
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Leptin role in the rat prostate ventral lobe. Fertil Steril 2011; 95:1490-3.e1. [DOI: 10.1016/j.fertnstert.2010.12.029] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2010] [Revised: 11/08/2010] [Accepted: 12/13/2010] [Indexed: 01/21/2023]
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Beebe-Dimmer JL, Zuhlke KA, Ray AM, Lange EM, Cooney KA. Genetic variation in adiponectin (ADIPOQ) and the type 1 receptor (ADIPOR1), obesity and prostate cancer in African Americans. Prostate Cancer Prostatic Dis 2010; 13:362-8. [PMID: 20697428 PMCID: PMC2978765 DOI: 10.1038/pcan.2010.27] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2010] [Revised: 06/25/2010] [Accepted: 06/27/2010] [Indexed: 12/22/2022]
Abstract
Adiponectin is a protein derived from adipose tissue suspected to have an important role in prostate carcinogenesis. Variants in the adiponectin gene (ADIPOQ) and its type 1 receptor (ADIPOR1) have been recently linked to risk of both breast and colorectal cancer. Therefore, we set out to examine the relationship between polymorphisms in these genes, obesity and prostate cancer in study of African-American men. Ten single-nucleotide polymorphisms (SNPs) in ADIPOQ and ADIPOR1 were genotyped in DNA samples from 131 African-American prostate cancer cases and 344 controls participating in the Flint Men's Health Study. Logistic regression was then used to estimate their association with prostate cancer and obesity. While no significant associations were detected between any of the tested SNPs and prostate cancer, the rs1501299 SNP in ADIPOQ was significantly associated with body mass (P=0.03). Genetic variation in ADIPOQ and ADIPOR1 did not predict risk of prostate cancer in this study of African-American men. However, the rs1501299 SNP in ADIPOQ was associated with obesity. Further investigation is warranted to determine if racial differences exist in the influence of the adiponectin pathway on prostate cancer risk.
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Affiliation(s)
- J L Beebe-Dimmer
- Department of Population Studies and Prevention, Karmanos Cancer Institute, Department of Internal Medicine, Wayne State University, Detroit, MI 48201, USA.
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Zhang J, Dhakal IB, Lang NP, Kadlubar FF. Polymorphisms in inflammatory genes, plasma antioxidants, and prostate cancer risk. Cancer Causes Control 2010; 21:1437-44. [PMID: 20431935 PMCID: PMC3207491 DOI: 10.1007/s10552-010-9571-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2010] [Accepted: 04/14/2010] [Indexed: 10/19/2022]
Abstract
BACKGROUND Presence of xenotropic murine leukemia virus-related virus and chronic inflammation in prostate tumor suggests that inflammation plays a role in prostate cancer etiology. This study investigated whether variants in inflammatory genes act alone or interact with plasma antioxidants to influence prostate cancer risk in a population-based case-control study in Central Arkansas. METHODS Cases (n = 193) were men, aged 40-80, diagnosed with prostate cancer in three major hospitals in 1998-2003, and controls (n = 197) were matched to cases by age, race, and county of residence. RESULTS After adjustment for confounders, polymorphisms in COX-2 (rs689466) and IL-8 (rs4073) were not significantly associated with prostate cancer risk. However, apparent interactions were observed between these genetic variants and plasma antioxidants on the risk of this malignancy. The protective effect of the mutant allele of the COX-2 polymorphism was more pronounced among subjects with high plasma levels of beta-cryptoxanthin, lycopene, beta-carotene, or selenium (>or=median) [e.g., OR (95% CI): 0.37 (0.15, 0.86) (AG/GG vs. AA) for beta-cryptoxanthin]. Conversely, the promoting effect of the variant allele of the IL-8 polymorphism was more remarkable in subjects with low plasma levels of Lutein/zeaxanthin, beta-cryptoxanthin, and beta-carotene ( CONCLUSIONS We found that sequence variants in inflammatory genes interact with plasma antioxidants to modulate prostate cancer risk.
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Affiliation(s)
- Jianjun Zhang
- Department of Public Health, Indiana University School of Medicine, Indianapolis, IN 46202, USA.
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Burton AJ, Tilling KM, Holly JM, Hamdy FC, Rowlands MAE, Donovan JL, Martin RM. Metabolic imbalance and prostate cancer progression. INTERNATIONAL JOURNAL OF MOLECULAR EPIDEMIOLOGY AND GENETICS 2010; 1:248-71. [PMID: 21532839 PMCID: PMC3076778] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Subscribe] [Scholar Register] [Received: 06/25/2010] [Accepted: 07/20/2010] [Indexed: 05/30/2023]
Abstract
There is substantial evidence implicating environmental factors in the progression of prostate cancer. The metabolic consequences of a western lifestyle, such as obesity, insulin resistance and abnormal hormone production have been linked to prostate carcinogenesis through multiple overlapping pathways. Insulin resistance results in raised levels of the mitogens insulin and insulin-like growth factor-1, both of which may affect prostate cancer directly, or through their effect on other metabolic regulators. Obesity is associated with abnormal levels of adipocyte-derived peptides (adipokines), sex hormones and inflammatory cytokines. Adipokines have been shown to influence prostate cancer in both cell culture studies and observational, population level studies. Testosterone appears to have a complex relationship with prostate carcinogenesis, and it has been suggested that the lower levels associated with obesity may select for more aggressive androgen independent prostate cancer cells. Prostatic inflammation, caused by infection, urinary reflux or dietary toxins, frequently occurs prior to cancer development and may influence progression to advanced disease. High levels of ω-6 fatty acids in the diet may lead to the production of further inflammatory molecules that may influence prostate cancer. Increased fatty acid metabolism occurs within tumour cells, providing a potential target for prostate cancer therapies. Aberrations in amino acid metabolism have also been identified in prostate cancer tissue, particularly in metastatic cancer. This evidence indicates lifestyle interventions may be effective in reducing the incidence of clinical disease. However, much more research is needed before recommendations are made.
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Inflammatory genetic markers of prostate cancer risk. Cancers (Basel) 2010; 2:1198-220. [PMID: 24281113 PMCID: PMC3835126 DOI: 10.3390/cancers2021198] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2010] [Revised: 05/24/2010] [Accepted: 06/01/2010] [Indexed: 01/14/2023] Open
Abstract
Prostate cancer is the most common cancer in Western society males, with incidence rates predicted to rise with global aging. Etiology of prostate cancer is however poorly understood, while current diagnostic tools can be invasive (digital rectal exam or biopsy) and/or lack specificity for the disease (prostate-specific antigen (PSA) testing). Substantial histological, epidemiological and molecular genetic evidence indicates that inflammation is important in prostate cancer pathogenesis. In this review, we summarize the current status of inflammatory genetic markers influencing susceptibility to prostate cancer. The focus will be on inflammatory cytokines regulating T-helper cell and chemokine homeostasis, together with the Toll-like receptors as key players in the host innate immune system. Although association studies indicating a genetic basis for prostate cancer are presently limited mainly due to lack of replication, larger and more ethnically and clinically defined study populations may help elucidate the true contribution of inflammatory gene variants to prostate cancer risk.
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Gorbachinsky I, Akpinar H, Assimos DG. Metabolic syndrome and urologic diseases. Rev Urol 2010; 12:e157-e180. [PMID: 21234260 PMCID: PMC3020279] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Metabolic syndrome (MetS) is a complex entity consisting of multiple interrelated factors including insulin resistance, central adiposity, dyslipidemia, endothelial dysfunction and atherosclerotic disease, low-grade inflammation, and in males, low testosterone levels. MetS has been linked to a number of urologic diseases including nephrolithiasis, benign prostatic hyperplasia and lower urinary tract symptoms, erectile dysfunction, male infertility, female incontinence, and prostate cancer. This article reviews the relationships between MetS and these entities. Urologists need to be cognizant of the impact that MetS has on urologic diseases as well as on overall patient health.
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