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Ji JS, Liu L, Huang H, Chen HW, Xiao L, Lu XY, Ni YY, Jia WJ, Huang L. The body mass index and the risk of ectopic pregnancy: a 5-year retrospective case-control study. BMC Pregnancy Childbirth 2024; 24:143. [PMID: 38368325 PMCID: PMC10873945 DOI: 10.1186/s12884-024-06319-z] [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: 03/13/2023] [Accepted: 02/04/2024] [Indexed: 02/19/2024] Open
Abstract
PURPOSE Acknowledging the associated risk factors may have a positive impact on reducing the incidence of ectopic pregnancy (EP). In recent years, body mass index (BMI) has been mentioned in research. However, few studies are available and controversial on the relationship between EP and BMI. METHODS We retrospectively studied the EP women as a case group and the deliveries as a control group in the central hospital of Wuhan during 2017 ~ 2021. χ2 test of variables associated with ectopic pregnancy was performed to find differences. Univariate and multivariate binary logistic regression analysis was conducted to analyze the association of the variables of age, parity, history of induced abortion, history of ectopic pregnancy, history of spontaneous abortion, history of appendectomy surgery and BMI (< 18.5 kg/m2, 18.5 ~ 24.9 kg/m2, 25 kg/m2 ~ 29.9 kg/m2, ≥ 30 kg /m2) with EP. RESULTS They were 659 EP and 1460 deliveries. The variables of age, parity, history of induced abortion, history of ectopic pregnancy and BMI were different significantly(P < 0.05). Multivariate analysis showed that the variables of age > 35 years old [(OR (Odds Ratio), 5.415; 95%CI (Confidence Interval), 4.006 ~ 7.320, P < 0.001], history of ectopic pregnancy (OR, 3.944; 95%CI, 2.405 ~ 6.467; P < 0.001), history of induced abortion(OR, 3.365; 95%CI, 2.724 ~ 4.158, P < 0.001) and low BMI (< 18.5 kg/m2) (OR, 1.929; 95%CI, 1.416 ~ 2.628, P < 0.001])increased the risk of EP. CONCLUSION The history of ectopic pregnancy, history of induced abortion and age > 35 years old were the risk factors with EP. In addition to these traditional factors, we found low BMI (< 18.5 kg/m2) with women may increase the risk to EP.
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Affiliation(s)
- Jin-Shuang Ji
- Department of Gynecology & Obstetrics, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Ling Liu
- The Diagnosis and Therapy Center of Pelvic Floor Rehabilitation and Electrophysiology, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Huan Huang
- Department of Gynecology & Obstetrics, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Hong-Wei Chen
- Department of Gynecology & Obstetrics, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Li Xiao
- Department of Gynecology & Obstetrics, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
- The Diagnosis and Therapy Center of Pelvic Floor Rehabilitation and Electrophysiology, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Xiang-Yi Lu
- Department of Gynecology & Obstetrics, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Yang-Yang Ni
- Department of Gynecology & Obstetrics, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Wen-Juan Jia
- Department of Gynecology & Obstetrics, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China
| | - Lei Huang
- Department of Gynecology & Obstetrics, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China.
- The Diagnosis and Therapy Center of Pelvic Floor Rehabilitation and Electrophysiology, Tongji Medical College, The Central Hospital of Wuhan, Huazhong University of Science and Technology, Wuhan, 430014, Hubei, China.
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2
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Schutte SC, Ghosh D, Moset Zupan A, Warwar R, Dawson MR. Differential Response to Mechanical Cues in Uterine Fibroid Versus Paired Myometrial Cells. Reprod Sci 2023; 30:3305-3314. [PMID: 37253935 DOI: 10.1007/s43032-023-01267-z] [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: 12/19/2022] [Accepted: 05/08/2023] [Indexed: 06/01/2023]
Abstract
Uterine leiomyomas, or fibroids, are common, benign tumors for which hysterectomy is the only definitive treatment. The extracellular matrix of fibroids is disorganized and stiffer than the surrounding myometrial tissue. To understand how stiffness affects fibroid cells, patient-matched fibroid and myometrial cells were cultured on substrates with stiffnesses varying from 0.2 to 150 kPa. Fibroid cells grew more slowly than myometrial cells overall, and only the myometrial cells altered their growth rate in response to stiffness. In both cell types, cell proliferation decreased with inhibition of PI3K and increased with inhibition of IGF-1. The cellular area was greater for the fibroid cells. The only significant effect of stiffness on the cell area was between the 0.2 and 64 kPa substrates, and this was true for both cell types. To investigate intracellular stiffness, intracellular particle tracking microrheology was used. Fibroid cells exhibited a more than 100-fold increase in elastic modulus at a frequency of 1 Hz in response to the addition of external stress, while myometrial cells showed little change in elastic modulus. Overall, the responses of both cells followed similar trends in response to stiffness and inhibitors, although the response was attenuated in the fibroid cells. The changes that were demonstrated by the change in intracellular stiffness with response to compression suggest that other mechanical forces may provide insight into differences in the two cell types.
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Affiliation(s)
- S C Schutte
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH, USA.
| | - D Ghosh
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, USA
| | - A Moset Zupan
- Department of Biomedical Engineering, University of Cincinnati, Cincinnati, OH, USA
| | - R Warwar
- Department of Obstetrics and Gynecology, College of Medicine, University of Cincinnati, Cincinnati, OH, USA
| | - M R Dawson
- Department of Molecular Biology, Cell Biology, and Biochemistry, Brown University, Providence, RI, USA.
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Holmes J, Gaber M, Jenks MZ, Wilson A, Loy T, Lepetit C, Vitolins MZ, Herbert BS, Cook KL, Vidi PA. Reversion of breast epithelial polarity alterations caused by obesity. NPJ Breast Cancer 2023; 9:35. [PMID: 37160903 PMCID: PMC10170133 DOI: 10.1038/s41523-023-00539-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Accepted: 04/21/2023] [Indexed: 05/11/2023] Open
Abstract
Molecular links between breast cancer risk factors and pro-oncogenic tissue alterations are poorly understood. The goal of this study was to characterize the impact of overweight and obesity on tissue markers of risk, using normal breast biopsies, a mouse model of diet-induced obesity, and cultured breast acini. Proliferation and alteration of epithelial polarity, both necessary for tumor initiation, were quantified by immunostaining. High BMI (>30) and elevated leptin were associated with compromised epithelial polarity whereas overweight was associated with a modest increase in proliferation in human and mice mammary glands. Human serum with unfavorable adipokine levels altered epithelial polarization of cultured acini, recapitulating the effect of leptin. Weight loss in mice led to metabolic improvements and restored epithelial polarity. In acini cultures, alteration of epithelial polarity was prevented by antioxidants and could be reverted by normalizing culture conditions. This study shows that obesity and/or dietary factors modulate tissue markers of risk. It provides a framework to set target values for metabolic improvements and to assess the efficacy of interventional studies aimed at reducing breast cancer risk.
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Affiliation(s)
- Julia Holmes
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA
| | - Mohamed Gaber
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA
| | - Mónica Z Jenks
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA
| | - Adam Wilson
- Department of Surgery, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA
| | - Tucker Loy
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA
| | | | - Mara Z Vitolins
- Department of Epidemiology and Prevention, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA
| | - Brittney-Shea Herbert
- Department of Medical & Molecular Genetics, IU School of Medicine, Indianapolis, IN, 46202, USA
| | - Katherine L Cook
- Department of Surgery, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA
- Atrium Health Wake Forest Baptist Comprehensive Cancer Center, Winston-Salem, NC, USA
| | - Pierre-Alexandre Vidi
- Department of Cancer Biology, Wake Forest University School of Medicine, Winston-Salem, NC, 27157, USA.
- Institut de Cancérologie de l'Ouest, Angers, 49055, France.
- Atrium Health Wake Forest Baptist Comprehensive Cancer Center, Winston-Salem, NC, USA.
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4
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Zhang Q, Qin S, Huai J, Yang H, Wei Y. Overexpression of IGF2 affects mouse weight and glycolipid metabolism and IGF2 is positively related to macrosomia. Front Endocrinol (Lausanne) 2023; 14:1030453. [PMID: 37152930 PMCID: PMC10154688 DOI: 10.3389/fendo.2023.1030453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Accepted: 03/27/2023] [Indexed: 05/09/2023] Open
Abstract
Objective To investigate the effects of insulin-like growth factor 2 (IGF2) on growth and glycolipid metabolism, as well as the underlying mechanism. Methods A mouse model of IGF2 overexpression was constructed to measure weight gain before adulthood, to obtain the values of adult glycolipid metabolism indicators in the peripheral blood and to detect the expression of genes in the IGF2 signaling pathway in different mouse tissues. The present study also explored the independent association between the IGF2 gene and macrosomia by detecting and comparing the expression levels of IGF2 mRNA/H19 RNA in maternal peripheral blood and fetal cord blood of 26 human pregnancies. Results In the mouse model, weights of the IGF2-overexpressing mice were significantly higher than those of the control mice at the age of 5-10 weeks. The glucose concentration, total cholesterol and high-density lipoprotein cholesterol (HDL-C) levels of IGF2-overexpressing mice were significantly lower than those of wild-type (WT) mice. Compared with the WT mice, the expression of H19 was significantly decreased in the pancreas and IGF1R was significantly decreased in the muscle of mice with IGF2 overexpression. The expression levels of STAT3 and AKT2 showed significant decrease in liver, muscle and increase in muscle of IGF2-overexpressing mice, respectively. GLUT2 expression showed significant increase in liver, kidney, muscle and decrease in pancreas of mice with IGF2 overexpression. This study also found that in normal mothers with the similar clinical characteristics, IGF2 expression in the maternal peripheral blood and fetal cord blood is an independent factor influencing macrosomia. Conclusion IGF2 expression was independently correlated with the occurrence of macrosomia, and overexpression of IGF2 significantly increased the weights of mice at the age of 5-10 weeks and significantly affected the values of adult glycolipid metabolism indicators, which might be the result of changes in the IGF2-IGF1R-STAT3/AKT2-GLUT2/GLUT4 pathway. These findings might suggest that IGF2 plays an important role in growth and glycolipid metabolism during both pregnancy and postnatal development.
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5
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The insulin and IGF signaling pathway sustains breast cancer stem cells by IRS2/PI3K-mediated regulation of MYC. Cell Rep 2022; 41:111759. [PMID: 36476848 PMCID: PMC9793643 DOI: 10.1016/j.celrep.2022.111759] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 10/01/2022] [Accepted: 11/09/2022] [Indexed: 12/12/2022] Open
Abstract
Despite the strong association of the insulin/insulin-like growth factor (IGF) signaling (IIS) pathway with tumor initiation, recurrence, and metastasis, the mechanism by which this pathway regulates cancer progression is not well understood. Here, we report that IIS supports breast cancer stem cell (CSC) self-renewal in an IRS2-phosphatidylinositol 3-kinase (PI3K)-dependent manner that involves the activation and stabilization of MYC. IRS2-PI3K signaling enhances MYC expression through the inhibition of GSK3β activity and suppression of MYC phosphorylation on threonine 58, thus reducing proteasome-mediated degradation of MYC and sustaining active pS62-MYC function. A stable T58A-Myc mutant rescues CSC function in Irs2-/- cells, supporting the role of this MYC stabilization in IRS2-dependent CSC regulation. These findings establish a mechanistic connection between the IIS pathway and MYC and highlight a role for IRS2-dependent signaling in breast cancer progression.
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6
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Meter B, Kratochvíl L, Kubička L, Starostová Z. Development of male-larger sexual size dimorphism in a lizard: IGF1 peak long after sexual maturity overlaps with pronounced growth in males. Front Physiol 2022; 13:917460. [PMID: 36035474 PMCID: PMC9399403 DOI: 10.3389/fphys.2022.917460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2022] [Accepted: 07/01/2022] [Indexed: 11/13/2022] Open
Abstract
Squamate reptiles have been considered to be indeterminate growers for a long time. However, recent studies demonstrate that bone prolongation is stopped in many lizards by the closure of bone growth plates. This shift in the paradigm of lizard growth has important consequences for questions concerning the proximate causes of sexual size dimorphism. The traditional model of highly plastic and indeterminate growth would correspond more to a long-term action of a sex-specific growth regulator. On the other hand, determinate growth would be more consistent with a regulator acting in a sex-specific manner on the activity of bone growth plates operating during the phase when a dimorphism in size develops. We followed the growth of males and females of the male-larger Madagascar ground gecko (Paroedura picta) and monitored the activity of bone growth plates, gonad size, levels of steroids, expression of their receptors (AR, ESR1), and expression of genes from the insulin-like growth factor network (IGF1, IGF2, IGF1R, and IGF2R) in livers. Specifically, we measured gene expression before the onset of dimorphic growth, at the time when males have more active bone growth plates and sexual size dimorphism was clearly visible, and after a period of pronounced growth in both sexes. We found a significant spike in the expression of IGF1 in males around the time when dimorphism develops. This overexpression in males comes long after an increase in circulating testosterone levels and sexual maturation in males, and it might be suppressed by ovarian hormones in females. The results suggest that sexual size dimorphism in male-larger lizards can be caused by a positive effect of high levels of IGF1 on bone growth. The peak in IGF1 resembles the situation during the pubertal growth spurt in humans, but in lizards, it seems to be sex-specific and disconnected from sexual maturation.
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Affiliation(s)
- Brandon Meter
- Department of Zoology, Faculty of Science, Charles University in Prague, Prague, Czechia
| | - Lukáš Kratochvíl
- Department of Ecology, Faculty of Science, Charles University in Prague, Prague, Czechia
- *Correspondence: Lukáš Kratochvíl,
| | - Lukáš Kubička
- Department of Ecology, Faculty of Science, Charles University in Prague, Prague, Czechia
| | - Zuzana Starostová
- Department of Zoology, Faculty of Science, Charles University in Prague, Prague, Czechia
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7
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Marley AR, Ryder JR, Turcotte LM, Spector LG. Maternal obesity and acute lymphoblastic leukemia risk in offspring: A summary of trends, epidemiological evidence, and possible biological mechanisms. Leuk Res 2022; 121:106924. [PMID: 35939888 DOI: 10.1016/j.leukres.2022.106924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/13/2022] [Accepted: 08/01/2022] [Indexed: 10/16/2022]
Abstract
Acute lymphoblastic leukemia, a heterogenous malignancy characterized by uncontrolled proliferation of lymphoid progenitors and generally initiated in utero, is the most common pediatric cancer. Although incidence of ALL has been steadily increasing in recent decades, no clear reason for this trend has been identified. Rising concurrently with ALL incidence, increasing maternal obesity rates may be partially contributing to increasing ALL prevelance. Epidemiological studies, including a recent meta-analysis, have found an association between maternal obesity and leukemogenesis in offspring, although mechanisms underlying this association remain unknown. Therefore, the purpose of this review is to propose possible mechanisms connecting maternal obesity to ALL risk in offspring, including changes to fetal/neonatal epigenetics, altered insulin-like growth factor profiles and insulin resistance, modified adipokine production and secretion, changes to immune cell populations, and impacts on birthweight and childhood obesity/adiposity. We describe how each proposed mechanism is biologically plausible due to their connection with maternal obesity, presence in neonatal and/or fetal tissue, observation in pediatric ALL patients at diagnosis, and association with leukemogenesis, A description of ALL and maternal obesity trends, a summary of epidemiological evidence, a discussion of the pathway from intrauterine environment to subsequent malignancy, and propositions for future directions are also presented.
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Affiliation(s)
- Andrew R Marley
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 715, Minneapolis, MN 55455, USA.
| | - Justin R Ryder
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 715, Minneapolis, MN 55455, USA; Center for Pediatric Obesity Medicine, Department of Pediatrics, University of Minnesota, 2450 Riverside Ave S AO-102, Minneapolis, MN 55454, USA
| | - Lucie M Turcotte
- Division of Hematology/Oncology, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 484, Minneapolis, MN 55455, USA; Masonic Cancer Center, University of Minnesota, 425 East River Parkway, Minneapolis, MN 55455, USA
| | - Logan G Spector
- Division of Epidemiology and Clinical Research, Department of Pediatrics, University of Minnesota, 420 Delaware St SE MMC 715, Minneapolis, MN 55455, USA; Masonic Cancer Center, University of Minnesota, 425 East River Parkway, Minneapolis, MN 55455, USA
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8
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Guo D, Zhang A, Zou T, Ding R, Chen K, Pan Y, Ji P, Ye B, Xiang M. The influence of metabolic syndrome on age-related hearing loss from the perspective of mitochondrial dysfunction. Front Aging Neurosci 2022; 14:930105. [PMID: 35966796 PMCID: PMC9372463 DOI: 10.3389/fnagi.2022.930105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Accepted: 07/12/2022] [Indexed: 12/06/2022] Open
Abstract
With the increase in life expectancy in the global population, aging societies have emerged in many countries, including China. As a common sensory defect in the elderly population, the prevalence of age-related hearing loss and its influence on society are increasing yearly. Metabolic syndrome is currently one of the main health problems in the world. Many studies have demonstrated that metabolic syndrome and its components are correlated with a variety of age-related diseases of the peripheral sensory system, including age-related hearing loss. Both age-related hearing loss and metabolic syndrome are high-prevalence chronic diseases, and many people suffer from both at the same time. In recent years, more and more studies have found that mitochondrial dysfunction occurs in both metabolic syndrome and age-related hearing loss. Therefore, to better understand the impact of metabolic syndrome on age-related hearing loss from the perspective of mitochondrial dysfunction, we reviewed the literature related to the relationship between age-related hearing loss and metabolic syndrome and their components to discern the possible role of mitochondria in both conditions.
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Affiliation(s)
- Dongye Guo
- Department of Otolaryngology & Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Andi Zhang
- Department of Otolaryngology & Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Tianyuan Zou
- Department of Otolaryngology & Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Rui Ding
- Department of Otolaryngology & Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Kaili Chen
- Department of Otolaryngology & Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Yi Pan
- Department of Otolaryngology & Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Peilin Ji
- Department of Otolaryngology & Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
| | - Bin Ye
- Department of Otolaryngology & Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
- *Correspondence: Bin Ye,
| | - Mingliang Xiang
- Department of Otolaryngology & Head and Neck Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Ear Institute, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- Shanghai Key Laboratory of Translational Medicine on Ear and Nose Diseases, Shanghai, China
- Mingliang Xiang,
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9
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Bidlingmaier M, Valcour A, Schilbach K, Kuehnle T, Diederich S, Rogge T, Cavalier E, Katayev A. Differences in the distribution of insulin-like growth-factor-I (IGF-I) concentrations between European and US populations. J Endocr Soc 2022; 6:bvac081. [PMID: 35673402 PMCID: PMC9165432 DOI: 10.1210/jendso/bvac081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Indexed: 11/19/2022] Open
Abstract
Abstract
Context
Method-specific reference intervals (RIs) determine utility of IGF-I as a biomarker in growth hormone-related diseases. Differences between populations might affect applicability of RIs.
Objective
To compare population-specific RIs derived from IGF-I routine testing in laboratories in the US and Europe using the same assay.
Design and setting
Uncensored routine IGF-I testing results generated over 5 years in four accredited laboratories (US, n=778,173 males/710,752 females; Europe, n=23,220 males/40,183 females).
Main outcome measures
Construction of RIs by indirect statistical methods designed to utilize routine testing data (modified Hoffmann approach). Comparison to published RIs, between the US and Europe, and between regions in the US with lower and higher mean body mass indexes (BMIs).
Results
Lower limits (LLs) of RIs calculated from all routine data sets do not differ from the published LLs. The same is true for Upper limits (ULs) calculated from European routine data. ULs derived from US routine data are significantly higher (children (10–18 years [mean, %]: boys +149.3 ng/mL [+34.6%]; girls +94.9 ng/mL [+19.8%]); adults (19–95 years: males +45 ng/mL [+20.3%]; females +29.7 ng/mL [+13.8%])). Average IGF-I is higher in samples from Colorado (lower mean BMI) compared with Alabama (p <0.0001), although the difference is smaller than between each of them and Europe.
Conclusions
We provide evidence that in large datasets from the same population, direct sampling and the indirect Hoffmann approach provide comparable RIs. While LLs are comparable between Europe and the US, the UL is significantly higher in the US. We suggest use of adapted RIs for the US.
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Affiliation(s)
- Martin Bidlingmaier
- Endocrine Laboratory, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Andre Valcour
- Laboratory Corporation of America Holdings, North Carolina, USA
| | - Katharina Schilbach
- Endocrine Laboratory, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | - Tim Kuehnle
- Endocrine Laboratory, Medizinische Klinik und Poliklinik IV, Klinikum der Universität München, Munich, Germany
| | | | | | | | - Alex Katayev
- Laboratory Corporation of America Holdings, North Carolina, USA
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10
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Beatty A, Rubin AM, Wada H, Heidinger B, Hood WR, Schwartz TS. Postnatal expression of IGF2 is the norm in amniote vertebrates. Proc Biol Sci 2022; 289:20212278. [PMID: 35193406 PMCID: PMC8864354 DOI: 10.1098/rspb.2021.2278] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
The insulin and insulin-like signalling (IIS) network plays an important role in mediating several life-history traits, including growth, reproduction and senescence. Although insulin-like growth factors (IGFs) 1 and 2 are both key hormones in the vertebrate IIS network, research on IGF2 in juveniles and adults has been largely neglected because early biomedical research on rodents found negligible IGF2 postnatal expression. Here, we challenge this assumption and ask to what degree IGF2 is expressed during postnatal life across amniotes by quantifying the relative gene expression of IGF1 and IGF2 using publicly available RNAseq data for 82 amniote species and quantitative polymerase chain reaction on liver cDNA at embryonic, juvenile and adult stages for two lizard, bird and mouse species. We found that (i) IGF2 is expressed postnatally across amniote species and life stages-often at a higher relative expression than IGF1, contradicting rodent models; (ii) the lack of rodent postnatal IGF2 expression is due to phylogenetic placement, not inbreeding or artificial selection; and (iii) adult IGF2 expression is sex-biased in some species. Our results demonstrate that IGF2 expression is typical for amniotes throughout life, suggesting that a comprehensive understanding of the mechanisms mediating variation in life-history traits will require studies that measure both IGFs.
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Affiliation(s)
- Abby Beatty
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
| | - Alexander M. Rubin
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
| | - Haruka Wada
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
| | - Britt Heidinger
- Department of Biological Sciences, North Dakota State University, Fargo, ND 58108, USA
| | - Wendy R. Hood
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
| | - Tonia S. Schwartz
- Department of Biological Sciences, Auburn University, Auburn, AL 36849, USA
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11
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Lee SC, Hsiao JK, Yang YC, Haung JC, Tien LY, Li DE, Tsai SM. Insulin-like growth factor-1 positively associated with bone formation markers and creatine kinase in adults with general physical activity. J Clin Lab Anal 2021; 35:e23799. [PMID: 34143515 PMCID: PMC8373336 DOI: 10.1002/jcla.23799] [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: 02/10/2021] [Revised: 04/01/2021] [Accepted: 04/03/2021] [Indexed: 01/06/2023] Open
Abstract
BACKGROUND The Insulin-like growth factor-1 (IGF-1) is primarily synthesized by hepatocytes in a growth hormone (GH)-dependent manner, it is also produced by bone and muscle. The effects of exercise on the associations between IGF-1 levels and bone turnover markers (BTM) were found in the previous studies. However, the associations between the levels of IGF-1 and BTM, liver function tests, and skeletal muscle markers in adults with general physical activity were not clear. METHODS Ninety-four participants were recruited from healthy survey. Blood samples were collected to analyze the levels of IGF-1, total protein (TP), albumin (Alb), total bilirubin (T-Bil), direct bilirubin (D-Bil), aspartate aminotransferase (AST), alanine aminotransferase (ALT), alkaline phosphatase (ALP), bone alkaline phosphatase (BALP), lactate dehydrogenase (LDH), creatine kinase (CK), creatinine (CRTN), and glucose. Urine samples were collected to analyze the CRTN and deoxypyridinoline (Dpd) levels. RESULTS The positively significant associations were found between the IGF-1 levels and the levels of ALP, BALP, and CK, respectively. No significant associations were found between the IGF-1 levels and the levels of TP, Alb, A/G, T-Bil, D-Bil, AST, ALT, LDH, glucose, urinary CRTN, urinary Dpd, and Dpd/CRTN ratios, respectively. CONCLUSION The serum IGF-1 levels associated with the levels of skeletal muscle and bone formation markers (BFM), not the bone resorption markers under general physical activity in the healthy adults. The physician needs to consider the effects of bone formation and skeletal muscle markers on the IGF-1 levels in the management of IGF-1-related disorders.
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Affiliation(s)
- Su-Chen Lee
- Department of Laboratory Medicine, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Jen-Kuei Hsiao
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Yu-Chun Yang
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Jung-Chih Haung
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Li-Ying Tien
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Dai-En Li
- Department of Nuclear Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Shih-Meng Tsai
- Department of Public Health and Environmental Medicine, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
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12
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Pubertal Growth, IGF-1, and Windows of Susceptibility: Puberty and Future Breast Cancer Risk. J Adolesc Health 2021; 68:517-522. [PMID: 32888770 PMCID: PMC7902462 DOI: 10.1016/j.jadohealth.2020.07.016] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 07/08/2020] [Accepted: 07/09/2020] [Indexed: 12/16/2022]
Abstract
PURPOSE Risk markers for breast cancer include earlier onset of menarche (age at menarche [AAM]) and peak height velocity (PHV). Insulin-like growth factor-1 (IGF-1) is associated with pubertal milestones, as well as cancer risk. This study examined the relationships between pubertal milestones associated with breast cancer risk and hormone changes in puberty. METHODS This is a longitudinal study of pubertal maturation in 183 girls, recruited at ages 6-7, followed up between 2004 and 2018. Measures included age at onset of puberty, and adult height attained; PHV; AAM; adult height, and serum IGF-1, and estrone-to-androstenedione (E:A) ratio. RESULTS PHV was greatest in early, and least in late maturing girls; length of the pubertal growth spurt was longest in early, and shortest in late maturing girls. Earlier AAM was related to greater PHV. IGF-1 concentrations tracked significantly during puberty; higher IGF-1 was related to earlier age of PHV, earlier AAM, greater PHV, and taller adult height. Greater E:A ratio was associated with earlier AAM. CONCLUSIONS Factors driving the association of earlier menarche and pubertal growth with breast cancer risk may be explained through a unifying concept relating higher IGF-1 concentrations, greater lifelong estrogen exposure, and longer pubertal growth period, with an expanded pubertal window of susceptibility.
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13
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Sherlala RA, Kammerer CM, Kuipers AL, Wojczynski MK, Ukraintseva SV, Feitosa MF, Mengel-From J, Zmuda JM, Minster RL. Relationship Between Serum IGF-1 and BMI Differs by Age. J Gerontol A Biol Sci Med Sci 2020; 76:1303-1308. [PMID: 33180942 DOI: 10.1093/gerona/glaa282] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Serum levels of insulin-like growth factor 1 (IGF-1) and body mass index (BMI) are both associated with susceptibility to age-related diseases. Reports on the correlation between them have been conflicting, with both positive to negative correlations reported. However, the age ranges of the participants varied widely among these studies. METHODS Using data on 4241 participants (aged 24-110) from the Long Life Family Study, we investigated the relationship between IGF-1 and BMI by age groups using regression analysis. RESULTS When stratified by age quartile, the relationship between IGF-1 and BMI varied: in the first quartile (Q1, 20-58 years) the relationship was negative (β = -0.2, p = .002); in Q2 (58-66 years) and Q3 (67-86 years) the relationship was negative (β = -0.07, β = -0.01, respectively) but nonsignificant; and in Q4 (87-110 years) the relationship was positive (β = 0.31, p = .0002). This pattern did not differ by sex. We observed a similar age-related pattern between IGF-1 and BMI among participants in the third National Health and Nutritional Examination Survey. CONCLUSIONS Our results that the relationship between IGF-1 and BMI differs by age may explain some of the inconsistency in reports about their relationship and encourage additional studies to understand the mechanisms underlying it.
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Affiliation(s)
- Rehab A Sherlala
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pennsylvania
| | - Candace M Kammerer
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pennsylvania
| | - Allison L Kuipers
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pennsylvania
| | - Mary K Wojczynski
- Department of Genetics, Washington University School of Medicine in St. Louis, Missouri
| | | | - Mary F Feitosa
- Department of Genetics, Washington University School of Medicine in St. Louis, Missouri
| | - Jonas Mengel-From
- Epidemiology and Biostatistics, department of Public Health, University of Southern Denmark, Odense, Denmark
| | - Joseph M Zmuda
- Department of Epidemiology, Graduate School of Public Health, University of Pittsburgh, Pennsylvania
| | - Ryan L Minster
- Department of Human Genetics, Graduate School of Public Health, University of Pittsburgh, Pennsylvania
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14
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Cai J, Liu L, Jiang X, Li P, Sha A, Ren J. Low body mass index is associated with ectopic pregnancy following assisted reproductive techniques: a retrospective study. BJOG 2020; 128:540-550. [PMID: 32575153 DOI: 10.1111/1471-0528.16378] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/12/2020] [Indexed: 12/31/2022]
Abstract
OBJECTIVE To investigate the association between body mass index (BMI) and ectopic pregnancy (EP) following embryo transfer (ET). DESIGN Retrospective cohort study. SETTING University-affiliated hospital. POPULATION A total of 16 378 pregnancies derived from either fresh ET or frozen-thawed ET between January 2008 and December 2017. METHODS We used the generalised estimating equation (GEE) to analyse the association between BMI categories and EP, as one woman may contribute to more than one pregnancy. Generalised additive models were also used to demonstrate the non-linear association. Models were adjusted for age, parity, gravidity, previous history of ectopic pregnancy, duration of infertility, polycystic ovary syndrome, endometriosis, diagnosis of tubal problems, ovarian reserve markers, ovarian stimulation parameters, insemination protocol, endometrial thickness and embryo transfer policies. MAIN OUTCOME MEASURES Ectopic pregnancy. RESULTS According to the WHO criteria, the number of cycles with low (<18.5 kg/m2 ), normal (18.5-24.9 kg/m2 ) and high (≥25 kg/m2 ) BMI were 2155, 13 447 and 776, respectively. In comparison with the normal BMI group, the rate of EP was significantly increased in the low BMI group (2.92% versus 2.02%, relative risk 1.45, 95% CI 1.11-1.90), but not in the high BMI group (2.84%, relative risk 1.41, 95% CI 0.92-2.20). Adjusted for confounding factors, the odds ratio for EP comparing low BMI versus normal BMI was 1.61 (95% CI 1.19-2.16) and that comparing high BMI versus normal BMI was 1.12 (95% CI 0.72-1.76). CONCLUSIONS Low BMI is associated with an increased risk of EP. TWEETABLE ABSTRACT The ectopic pregnancy rate after embryo transfer for lean women is higher than that for women of normal weight.
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Affiliation(s)
- J Cai
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China.,School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - L Liu
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China.,School of Medicine, Xiamen University, Xiamen, Fujian, China
| | - X Jiang
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China
| | - P Li
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China
| | - A Sha
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China
| | - J Ren
- The Affiliated Chenggong Hospital of Xiamen University, Xiamen, Fujian, China
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15
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Watts EL, Perez‐Cornago A, Appleby PN, Albanes D, Ardanaz E, Black A, Bueno‐de‐Mesquita HB, Chan JM, Chen C, Chubb SP, Cook MB, Deschasaux M, Donovan JL, English DR, Flicker L, Freedman ND, Galan P, Giles GG, Giovannucci EL, Gunter MJ, Habel LA, Häggström C, Haiman C, Hamdy FC, Hercberg S, Holly JM, Huang J, Huang W, Johansson M, Kaaks R, Kubo T, Lane JA, Layne TM, Le Marchand L, Martin RM, Metter EJ, Mikami K, Milne RL, Morris HA, Mucci LA, Neal DE, Neuhouser ML, Oliver SE, Overvad K, Ozasa K, Pala V, Pernar CH, Pollak M, Rowlands M, Schaefer CA, Schenk JM, Stattin P, Tamakoshi A, Thysell E, Touvier M, Trichopoulou A, Tsilidis KK, Van Den Eeden SK, Weinstein SJ, Wilkens L, Yeap BB, Key TJ, Allen NE, Travis RC. The associations of anthropometric, behavioural and sociodemographic factors with circulating concentrations of IGF-I, IGF-II, IGFBP-1, IGFBP-2 and IGFBP-3 in a pooled analysis of 16,024 men from 22 studies. Int J Cancer 2019; 145:3244-3256. [PMID: 30873591 PMCID: PMC6745281 DOI: 10.1002/ijc.32276] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2018] [Revised: 01/28/2019] [Accepted: 02/04/2019] [Indexed: 12/24/2022]
Abstract
Insulin-like growth factors (IGFs) and insulin-like growth factor binding proteins (IGFBPs) have been implicated in the aetiology of several cancers. To better understand whether anthropometric, behavioural and sociodemographic factors may play a role in cancer risk via IGF signalling, we examined the cross-sectional associations of these exposures with circulating concentrations of IGFs (IGF-I and IGF-II) and IGFBPs (IGFBP-1, IGFBP-2 and IGFBP-3). The Endogenous Hormones, Nutritional Biomarkers and Prostate Cancer Collaborative Group dataset includes individual participant data from 16,024 male controls (i.e. without prostate cancer) aged 22-89 years from 22 prospective studies. Geometric means of protein concentrations were estimated using analysis of variance, adjusted for relevant covariates. Older age was associated with higher concentrations of IGFBP-1 and IGFBP-2 and lower concentrations of IGF-I, IGF-II and IGFBP-3. Higher body mass index was associated with lower concentrations of IGFBP-1 and IGFBP-2. Taller height was associated with higher concentrations of IGF-I and IGFBP-3 and lower concentrations of IGFBP-1. Smokers had higher concentrations of IGFBP-1 and IGFBP-2 and lower concentrations of IGFBP-3 than nonsmokers. Higher alcohol consumption was associated with higher concentrations of IGF-II and lower concentrations of IGF-I and IGFBP-2. African Americans had lower concentrations of IGF-II, IGFBP-1, IGFBP-2 and IGFBP-3 and Hispanics had lower IGF-I, IGF-II and IGFBP-3 than non-Hispanic whites. These findings indicate that a range of anthropometric, behavioural and sociodemographic factors are associated with circulating concentrations of IGFs and IGFBPs in men, which will lead to a greater understanding of the mechanisms through which these factors influence cancer risk.
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Affiliation(s)
- Eleanor L. Watts
- Cancer Epidemiology UnitNuffield Department of Population Health, University of OxfordOxfordUnited Kingdom
| | - Aurora Perez‐Cornago
- Cancer Epidemiology UnitNuffield Department of Population Health, University of OxfordOxfordUnited Kingdom
| | - Paul N. Appleby
- Cancer Epidemiology UnitNuffield Department of Population Health, University of OxfordOxfordUnited Kingdom
| | - Demetrius Albanes
- Division of Cancer Epidemiology and Genetics, Department of Health and Human ServicesNational Cancer Institute, National Institutes of HealthBethesdaMD
| | - Eva Ardanaz
- Navarra Public Health InstitutePamplonaSpain
| | - Amanda Black
- Division of Cancer Epidemiology and Genetics, Department of Health and Human ServicesNational Cancer Institute, National Institutes of HealthBethesdaMD
| | - H. Bas Bueno‐de‐Mesquita
- Department for Determinants of Chronic DiseasesNational Institute for Public Health and the Environment (RIVM)BilthovenThe Netherlands
- Department of Gastroenterology and HepatologyUniversity Medical CentreUtrechtThe Netherlands
- Department of Epidemiology and BiostatisticsImperial College LondonLondonUnited Kingdom
- Department of Social & Preventive MedicineUniversity of MalayaKuala LumpurMalaysia
| | - June M. Chan
- Department of Epidemiology and BiostatisticsUniversity of California San FranciscoSan FranciscoCA
- Department UrologyUniversity of California‐San FranciscoSan FranciscoCA
| | - Chu Chen
- Public Health Sciences Division, Program in EpidemiologyFred Hutchinson Cancer Research CenterSeattleWA
| | - S.A. Paul Chubb
- PathWest Laboratory MedicineFiona Stanley HospitalPerthWAAustralia
- Medical SchoolUniversity of Western AustraliaPerthWAAustralia
| | - Michael B. Cook
- Division of Cancer Epidemiology and Genetics, Department of Health and Human ServicesNational Cancer Institute, National Institutes of HealthBethesdaMD
| | - Mélanie Deschasaux
- Sorbonne Paris Cité Epidemiology and Statistics Research Center (CRESS)Nutritional Epidemiology Research Team (EREN), Inserm U1153/Inra U1125/Cnam/Paris 13 UniversityParisFrance
| | - Jenny L. Donovan
- Department of Population Health SciencesBristol Medical School, University of BristolBristolUnited Kingdom
| | - Dallas R. English
- Cancer Epidemiology and Intelligence DivisionCancer Council VictoriaMelbourneVICAustralia
- Centre for Epidemiology and BiostatisticsMelbourne School of Population and Global Health, The University of MelbourneMelbourneVICAustralia
| | - Leon Flicker
- Medical SchoolUniversity of Western AustraliaPerthWAAustralia
- WA Centre for Health & Ageing, Centre for Medical ResearchHarry Perkins Institute of Medical ResearchPerthWAAustralia
- Department of Geriatric MedicineRoyal Perth HospitalPerthWAAustralia
| | - Neal D. Freedman
- Division of Cancer Epidemiology and Genetics, Department of Health and Human ServicesNational Cancer Institute, National Institutes of HealthBethesdaMD
| | - Pilar Galan
- Sorbonne Paris Cité Epidemiology and Statistics Research Center (CRESS)Nutritional Epidemiology Research Team (EREN), Inserm U1153/Inra U1125/Cnam/Paris 13 UniversityParisFrance
| | - Graham G. Giles
- Cancer Epidemiology and Intelligence DivisionCancer Council VictoriaMelbourneVICAustralia
- Centre for Epidemiology and BiostatisticsMelbourne School of Population and Global Health, The University of MelbourneMelbourneVICAustralia
| | - Edward L. Giovannucci
- Department of EpidemiologyHarvard T.H. Chan School of Public HealthBostonMA
- Channing Division of Network MedicineBrigham and Women's Hospital and Harvard Medical SchoolBostonMA
- Department of NutritionHarvard T.H. Chan School of Public HealthBostonMA
| | - Marc J. Gunter
- Section of Nutrition and MetabolismInternational Agency for Research on CancerLyonFrance
| | - Laurel A. Habel
- Division of ResearchKaiser Permanente Northern CaliforniaOaklandCA
| | | | | | - Freddie C. Hamdy
- Nuffield Department of SurgeryUniversity of OxfordOxfordUnited Kingdom
| | - Serge Hercberg
- Sorbonne Paris Cité Epidemiology and Statistics Research Center (CRESS)Nutritional Epidemiology Research Team (EREN), Inserm U1153/Inra U1125/Cnam/Paris 13 UniversityParisFrance
| | - Jeff M. Holly
- IGFs & Metabolic Endocrinology Group, Translational Health SciencesBristol Medical School, Faculty of Health Sciences, University of BristolBristolUnited Kingdom
| | - Jiaqi Huang
- Division of Cancer Epidemiology and Genetics, Department of Health and Human ServicesNational Cancer Institute, National Institutes of HealthBethesdaMD
| | - Wen‐Yi Huang
- Division of Cancer Epidemiology and Genetics, Department of Health and Human ServicesNational Cancer Institute, National Institutes of HealthBethesdaMD
| | - Mattias Johansson
- Genetic Epidemiology GroupInternational Agency for Research on CancerLyonFrance
| | - Rudolf Kaaks
- Division of Cancer EpidemiologyGerman Cancer Research Center (DKFZ)HeidelbergGermany
| | - Tatsuhiko Kubo
- Department of Environmental EpidemiologyUniversity of Occupational and Environmental HealthKitakyushuJapan
| | - J. Athene Lane
- Department of Population Health SciencesBristol Medical School, University of BristolBristolUnited Kingdom
- National Institute for Health Research Bristol Biomedical Research Unit in NutritionBristolUnited Kingdom
| | | | | | - Richard M. Martin
- Department of Population Health SciencesBristol Medical School, University of BristolBristolUnited Kingdom
- National Institute for Health Research Bristol Biomedical Research Unit in NutritionBristolUnited Kingdom
- Medical Research Council/University of Bristol Integrative Epidemiology Unit, University of BristolBristolUnited Kingdom
| | - E. Jeffrey Metter
- Department of NeurologyUniversity of Tennessee Health Science CenterMemphisTN
| | | | - Roger L. Milne
- Cancer Epidemiology and Intelligence DivisionCancer Council VictoriaMelbourneVICAustralia
- Centre for Epidemiology and BiostatisticsMelbourne School of Population and Global Health, The University of MelbourneMelbourneVICAustralia
| | | | - Lorelei A. Mucci
- Department of EpidemiologyHarvard T.H. Chan School of Public HealthBostonMA
- Channing Division of Network MedicineBrigham and Women's Hospital and Harvard Medical SchoolBostonMA
| | - David E. Neal
- Nuffield Department of SurgeryUniversity of OxfordOxfordUnited Kingdom
| | - Marian L. Neuhouser
- Cancer Prevention Program, Public Health Sciences DivisionFred Hutchinson Cancer Research CenterSeattleWA
| | - Steven E. Oliver
- Department of Health SciencesUniversity of York and the Hull York Medical SchoolYorkUK
| | - Kim Overvad
- Department of Public HealthSection for Epidemiology, Aarhus UniversityAarhusDenmark
| | - Kotaro Ozasa
- Radiation Effects Research FoundationHiroshimaJapan
| | - Valeria Pala
- Epidemiology and Prevention UnitFondazione IRCCS Istituto Nazionale dei Tumori di MilanoMilanItaly
| | - Claire H. Pernar
- Department of EpidemiologyHarvard T.H. Chan School of Public HealthBostonMA
| | - Michael Pollak
- Department of Medicine and OncologyMcGill UniversityMontrealQCCanada
- Segal Cancer CentreJewish General HospitalMontrealQCCanada
| | - Mari‐Anne Rowlands
- Department of Population Health SciencesBristol Medical School, University of BristolBristolUnited Kingdom
| | | | - Jeannette M. Schenk
- Cancer Prevention Program, Public Health Sciences DivisionFred Hutchinson Cancer Research CenterSeattleWA
| | - Pär Stattin
- Department of Surgical SciencesUppsala UniversityUppsalaSweden
| | | | - Elin Thysell
- Department of Medical Biosciences and PathologyUmea UniversityUmeaSweden
| | - Mathilde Touvier
- Sorbonne Paris Cité Epidemiology and Statistics Research Center (CRESS)Nutritional Epidemiology Research Team (EREN), Inserm U1153/Inra U1125/Cnam/Paris 13 UniversityParisFrance
| | | | - Konstantinos K. Tsilidis
- Department of Epidemiology and BiostatisticsImperial College LondonLondonUnited Kingdom
- Department of Hygiene and Epidemiology, School of MedicineUniversity of IoanninaIoanninaGreece
| | | | - Stephanie J. Weinstein
- Division of Cancer Epidemiology and Genetics, Department of Health and Human ServicesNational Cancer Institute, National Institutes of HealthBethesdaMD
| | | | - Bu B. Yeap
- Medical SchoolUniversity of Western AustraliaPerthWAAustralia
- Department of Endocrinology and DiabetesFiona Stanley HospitalPerthWAAustralia
| | - Timothy J. Key
- Cancer Epidemiology UnitNuffield Department of Population Health, University of OxfordOxfordUnited Kingdom
| | - Naomi E. Allen
- Clinical Trial Service Unit and Epidemiological Studies UnitNuffield Department of Population Health, University of OxfordOxfordUnited Kingdom
| | - Ruth C. Travis
- Cancer Epidemiology UnitNuffield Department of Population Health, University of OxfordOxfordUnited Kingdom
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16
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Hada M, Oh H, Pfeiffer RM, Falk RT, Fan S, Mullooly M, Pollak M, Geller B, Vacek PM, Weaver D, Shepherd J, Wang J, Fan B, Mahmoudzadeh AP, Malkov S, Herschorn S, Brinton LA, Sherman ME, Gierach GL. Relationship of circulating insulin-like growth factor-I and binding proteins 1-7 with mammographic density among women undergoing image-guided diagnostic breast biopsy. Breast Cancer Res 2019; 21:81. [PMID: 31337427 PMCID: PMC6651938 DOI: 10.1186/s13058-019-1162-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Accepted: 06/19/2019] [Indexed: 12/15/2022] Open
Abstract
Background Mammographic density (MD) is a strong breast cancer risk factor that reflects fibroglandular and adipose tissue composition, but its biologic underpinnings are poorly understood. Insulin-like growth factor binding proteins (IGFBPs) are markers that may be associated with MD given their hypothesized role in breast carcinogenesis. IGFBPs sequester IGF-I, limiting its bioavailability. Prior studies have found positive associations between circulating IGF-I and the IGF-I:IGFBP-3 ratio and breast cancer risk. We evaluated the associations of IGF-I, IGFBP-3, and six other IGFBPs with MD. Methods Serum IGF measures were quantified in 296 women, ages 40–65, undergoing diagnostic image-guided breast biopsy. Volumetric density measures (MD-V) were assessed in pre-biopsy digital mammograms using single X-ray absorptiometry. Area density measures (MD-A) were estimated by computer-assisted thresholding software. Age, body mass index (BMI), and BMI2-adjusted linear regression models were used to examine associations of serum IGF measures with MD. Effect modification by BMI was also assessed. Results IGF-I and IGFBP-3 were not strongly associated with MD after BMI adjustment. In multivariable analyses among premenopausal women, IGFBP-2 was positively associated with both percent MD-V (β = 1.49, p value = 0.02) and MD-A (β = 1.55, p value = 0.05). Among postmenopausal women, positive relationships between IGFBP-2 and percent MD-V (β = 2.04, p = 0.003) were observed; the positive associations between IGFBP-2 and percent MD-V were stronger among lean women (BMI < 25 kg/m2) (β = 5.32, p = 0.0002; p interaction = 0.0003). Conclusions In this comprehensive study of IGFBPs and MD, we observed a novel positive association between IGFBP-2 and MD, particularly among women with lower BMI. In concert with in vitro studies suggesting a dual role of IGFBP-2 on breast tissue, promoting cell proliferation as well as inhibiting tumorigenesis, our findings suggest that further studies assessing the role of IGFBP-2 in breast tissue composition, in addition to IGF-1 and IGFBP-3, are warranted. Electronic supplementary material The online version of this article (10.1186/s13058-019-1162-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Manila Hada
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Hannah Oh
- Division of Health Policy and Management, College of Health Sciences, Korea University, Seoul, Republic of Korea
| | - Ruth M Pfeiffer
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Roni T Falk
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Shaoqi Fan
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | | | | | - Berta Geller
- University of Vermont and Vermont Cancer Center, Burlington, VT, USA
| | - Pamela M Vacek
- University of Vermont and Vermont Cancer Center, Burlington, VT, USA
| | - Donald Weaver
- University of Vermont and Vermont Cancer Center, Burlington, VT, USA
| | | | - Jeff Wang
- Graduate School of Medicine, Hokkaido University, Sapporo, Japan
| | - Bo Fan
- University of California San Francisco, San Francisco, CA, USA
| | | | - Serghei Malkov
- University of California San Francisco, San Francisco, CA, USA
| | - Sally Herschorn
- University of Vermont and Vermont Cancer Center, Burlington, VT, USA
| | - Louise A Brinton
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | | | - Gretchen L Gierach
- National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
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17
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Alfares MN, Perks CM, Hamilton-Shield JP, Holly JMP. Insulin-like growth factor-II in adipocyte regulation: depot-specific actions suggest a potential role limiting excess visceral adiposity. Am J Physiol Endocrinol Metab 2018; 315:E1098-E1107. [PMID: 30040480 PMCID: PMC6336950 DOI: 10.1152/ajpendo.00409.2017] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The IGF system has an important role in growth and development. IGF-II is a recognized fetal growth promoter. However, its physiological postnatal role remains uncertain, although it is maintained in the circulation at a substantially high level throughout life. IGF-II has been strongly linked to obesity in genetic studies, and more recent evidence suggests a metabolic role. We examined fat depot differences in IGF-II's action on differentiation and metabolism. We speculate a specific effect on visceral adipocytes in relation to the differential distribution of insulin receptors between visceral and subcutaneous fat depots. We used a previously established adipocyte, cell culture system of matched pairs of visceral and subcutaneous fat biopsies from 20 normal weight children undergoing routine surgery for nonmalignant, nonseptic conditions. Preadipocytes were differentiated for 14 days in the presence or absence of IGF-II. Oil Red O staining, Western blotting, and reverse transcription polymerase chain reaction techniques were employed to assess levels of adipogenesis markers and levels of the insulin receptor and insulin receptor isoforms. Our data indicate that IGF-II promotes preadipocyte differentiation in subcutaneous preadipocytes but showed a protective, opposing effect restricting visceral preadipocyte differentiation, confirmed by reductions in the differentiation markers peroxisome proliferator-activated receptor gamma and adiponectin and in triglyceride staining. Additionally, IGF-II reduced mRNA expression of the insulin receptor in adipocytes and downregulated insulin receptor isoform A and glucose transporter 4 abundance and corresponding glucose uptake in visceral adipocytes. In conclusion, IGF-II is a regulator of preadipocyte differentiation and metabolism by acting as a differential modulator of fat accumulation favoring less visceral fat deposition in children.
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Affiliation(s)
- Maiadah N Alfares
- Insulin-like Growth Factors and Metabolic Endocrinology Group, Bristol Medical School, Department of Translational Health Sciences, University of Bristol, Learning and Research Building, Southmead Hospital , Bristol , United Kingdom
| | - Claire M Perks
- Insulin-like Growth Factors and Metabolic Endocrinology Group, Bristol Medical School, Department of Translational Health Sciences, University of Bristol, Learning and Research Building, Southmead Hospital , Bristol , United Kingdom
| | - Julian P Hamilton-Shield
- Nutrition Theme, National Institute of Health Research Bristol Biomedical Research Centre, Bristol Medical School, Department of Translational Health Sciences, University of Bristol, Bristol , United Kingdom
| | - Jeffrey M P Holly
- Insulin-like Growth Factors and Metabolic Endocrinology Group, Bristol Medical School, Department of Translational Health Sciences, University of Bristol, Learning and Research Building, Southmead Hospital , Bristol , United Kingdom
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18
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Oh H, Pfeiffer RM, Falk RT, Horne HN, Xiang J, Pollak M, Brinton LA, Storniolo AMV, Sherman ME, Gierach GL, Figueroa JD. Serum insulin-like growth factor (IGF)-I and IGF binding protein-3 in relation to terminal duct lobular unit involution of the normal breast in Caucasian and African American women: The Susan G. Komen Tissue Bank. Int J Cancer 2018; 143:496-507. [PMID: 29473153 DOI: 10.1002/ijc.31333] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 02/05/2018] [Accepted: 02/07/2018] [Indexed: 12/12/2022]
Abstract
Lesser degrees of terminal duct lobular unit (TDLU) involution, as reflected by higher numbers of TDLUs and acini/TDLU, are associated with elevated breast cancer risk. In rodent models, the insulin-like growth factor (IGF) system regulates involution of the mammary gland. We examined associations of circulating IGF measures with TDLU involution in normal breast tissues among women without precancerous lesions. Among 715 Caucasian and 283 African American (AA) women who donated normal breast tissue samples to the Komen Tissue Bank between 2009 and 2012 (75% premenopausal), serum concentrations of IGF-I and binding protein (IGFBP)-3 were quantified using enzyme-linked immunosorbent assay. Hematoxilyn and eosin-stained tissue sections were assessed for numbers of TDLUs ("TDLU count"). Zero-inflated Poisson regression models with a robust variance estimator were used to estimate relative risks (RRs) for association of IGF measures (tertiles) with TDLU count by race and menopausal status, adjusting for potential confounders. AA (vs. Caucasian) women had higher age-adjusted mean levels of serum IGF-I (137 vs. 131 ng/mL, p = 0.07) and lower levels of IGFBP-3 (4165 vs. 4684 ng/mL, p < 0.0001). Postmenopausal IGFBP-3 was inversely associated with TDLU count among AA (RRT3vs.T1 = 0.49, 95% CI = 0.28-0.84, p-trend = 0.04) and Caucasian (RRT3vs.T1 =0.64, 95% CI = 0.42-0.98, p-trend = 0.04) women. In premenopausal women, higher IGF-I:IGFBP-3 ratios were associated with higher TDLU count in Caucasian (RRT3vs.T1 =1.33, 95% CI = 1.02-1.75, p-trend = 0.04), but not in AA (RRT3vs.T1 =0.65, 95% CI = 0.42-1.00, p-trend = 0.05), women. Our data suggest a role of the IGF system, particularly IGFBP-3, in TDLU involution of the normal breast, a breast cancer risk factor, among Caucasian and AA women.
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Affiliation(s)
- Hannah Oh
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD.,Section of Population Science, Rutgers Cancer Institute of New Jersey, New Brunswick, NJ.,Division of Health Policy and Management, College of Health Science, Korea University, Seoul, Republic of Korea
| | - Ruth M Pfeiffer
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Roni T Falk
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Hisani N Horne
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD.,U.S. Food and Drug Administration, Silver Spring, MD
| | - Jackie Xiang
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | | | - Louise A Brinton
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Anna Maria V Storniolo
- Department of Epidemiology, Richard M. Fairbanks School of Public Health, Indiana University, Indianapolis, IN
| | - Mark E Sherman
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD.,Mayo Clinic, Jacksonville, FL
| | - Gretchen L Gierach
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD
| | - Jonine D Figueroa
- Division of Cancer Epidemiology and Genetics, National Cancer Institute, Bethesda, MD.,Usher Institute of Population Health Sciences and Informatics, Institute of Genomics and Molecular Medicine, Edinburgh Cancer Research Centre, University of Edinburgh, UK
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19
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Sugita B, Gill M, Mahajan A, Duttargi A, Kirolikar S, Almeida R, Regis K, Oluwasanmi OL, Marchi F, Marian C, Makambi K, Kallakury B, Sheahan L, Cavalli IJ, Ribeiro EM, Madhavan S, Boca S, Gusev Y, Cavalli LR. Differentially expressed miRNAs in triple negative breast cancer between African-American and non-Hispanic white women. Oncotarget 2018; 7:79274-79291. [PMID: 27813494 PMCID: PMC5346713 DOI: 10.18632/oncotarget.13024] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2016] [Accepted: 10/25/2016] [Indexed: 01/09/2023] Open
Abstract
Triple Negative Breast Cancer (TNBC), a clinically aggressive subtype of breast cancer, disproportionately affects African American (AA) women when compared to non-Hispanic Whites (NHW). MiRNAs(miRNAs) play a critical role in these tumors, through the regulation of cancer driver genes. In this study, our goal was to characterize and compare the patterns of miRNA expression in TNBC of AA (n = 27) and NHW women (n = 30). A total of 256 miRNAs were differentially expressed between these groups, and distinct from the ones observed in their respective non-TNBC subtypes. Fifty-five of these miRNAs were mapped in cytobands carrying copy number alterations (CNAs); 26 of them presented expression levels concordant with the observed CNAs. Receiving operating characteristic (ROC) analysis showed a good power (AUC ≥ 0.80; 95% CI) for over 65% of the individual miRNAs and a high combined power with superior sensitivity and specificity (AUC = 0.88 (0.78−0.99); 95% CI) of the 26 miRNA panel in discriminating TNBC between these populations. Subsequent miRNA target analysis revealed their involvement in the interconnected PI3K/AKT, MAPK and insulin signaling pathways. Additionally, three miRNAs of this panel were associated with early age at diagnosis. Altogether, these findings indicated that there are different patterns of miRNA expression between TNBC of AA and NHW women and that their mapping in genomic regions with high levels of CNAs is not merely physical, but biologically relevant to the TNBC phenotype. Once validated in distinct cohorts of AA women, this panel can potentially represent their intrinsic TNBC genome signature.
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Affiliation(s)
- Bruna Sugita
- Department of Genetics, Federal University of Paraná, Curitiba, PR, Brazil
| | - Mandeep Gill
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Akanskha Mahajan
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Anju Duttargi
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Saurabh Kirolikar
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Rodrigo Almeida
- Department of Genetics, Federal University of Paraná, Curitiba, PR, Brazil
| | - Kenny Regis
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Olusayo L Oluwasanmi
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Fabio Marchi
- International Research Center-CIPE, A. C. Camargo Cancer Center, São Paulo, SP, Brazil
| | - Catalin Marian
- The Ohio State University Comprehensive Cancer Center, Division of Cancer Prevention and Control, College of Medicine, The Ohio State University, Columbus, Ohio.,The University of Medicine and Pharmacy Timisoara, Timisoara, Romania
| | - Kepher Makambi
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA.,Departments of Biostatistics, Bioinformatics, and Biomathematics, Georgetown University, Washington, DC USA
| | - Bhaskar Kallakury
- Department of Pathology, Georgetown University Medical Center, Washington, DC, USA
| | - Laura Sheahan
- Innovation Center for Biomedical Informatics, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Iglenir J Cavalli
- Department of Genetics, Federal University of Paraná, Curitiba, PR, Brazil
| | - Enilze M Ribeiro
- Department of Genetics, Federal University of Paraná, Curitiba, PR, Brazil
| | - Subha Madhavan
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA.,Innovation Center for Biomedical Informatics, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Simina Boca
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA.,Innovation Center for Biomedical Informatics, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Yuriy Gusev
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA.,Innovation Center for Biomedical Informatics, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
| | - Luciane R Cavalli
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University Medical Center, Washington, DC, USA
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20
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Jung SY, Barrington WE, Lane DS, Chen C, Chlebowski R, Corbie-Smith G, Hou L, Zhang ZF, Paek MS, Crandall CJ. Bioavailable insulin-like growth factor-I as mediator of racial disparity in obesity-relevant breast and colorectal cancer risk among postmenopausal women. Menopause 2017; 24:288-298. [PMID: 27749737 PMCID: PMC5323280 DOI: 10.1097/gme.0000000000000753] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
OBJECTIVE Bioavailable insulin-like growth factor-I (IGF-I) interacts with obesity and exogenous estrogen (E) in a racial disparity in obesity-related cancer risk, yet their interconnected pathways are not fully characterized. We investigated whether circulating bioavailable IGF-I acted as a mediator of the racial disparity in obesity-related cancers such as breast and colorectal (CR) cancers and how obesity and E use regulate this relationship. METHODS A total of 2,425 white and 164 African American (AA) postmenopausal women from the Women's Health Initiative Observational Study were followed from October 1, 1993 through August 29, 2014. To assess bioactive IGF-I as a mediator of race-cancer relationship, we used the Baron-Kenny method and quantitative estimation of the mediation effect. RESULTS Compared with white women, AA women had higher IGF-I levels; their higher risk of CR cancer, after accounting for IGF-I, was no longer significant. IGF-I was associated with breast and CR cancers even after controlling for race. Among viscerally obese (waist/hip ratio >0.85) and overall nonobese women (body mass index <30), IGF-I was a strong mediator, reducing the racial disparity in both cancers by 30% and 60%, respectively. In E-only users and nonusers, IGF-I explained the racial disparity in CR cancer only modestly. CONCLUSIONS Bioavailable IGF-I is potentially important in racial disparities in obesity-related breast and CR cancer risk between postmenopausal AA and white women. Body fat distribution and E use may be part of the interconnected hormonal pathways related to racial difference in IGF-I levels and obesity-related cancer risk.
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Affiliation(s)
- Su Yon Jung
- Translational Sciences Section, Jonsson Comprehensive Cancer Center, School of Nursing, University of California, Los Angeles, Los Angeles, CA, USA
| | - Wendy E. Barrington
- Psychosocial & Community Health, School of Nursing, University of Washington, Seattle, WA, USA
| | - Dorothy S. Lane
- Department of Family, Population and Preventive Medicine. Stony Brook University School of Medicine, Stony Brook, NY, USA
| | - Chu Chen
- Program in Epidemiology, Division of Public Health Sciences, Fred Hutchinson Cancer Research Center, Seattle, WA, USA
| | - Rowan Chlebowski
- Los Angeles Biomedical Research Institute at Harbor-UCLA Medical Center, Torrance, CA, USA
| | - Giselle Corbie-Smith
- Department of Medicine, UNC-Chapel Hill School of Medicine, Chapel Hill, NC, USA
| | - Lifang Hou
- Department of Preventive Medicine & Robert H. Lurie Comprehensive Cancer Center, Feinberg School of Medicine, Northwestern University Chicago, IL, USA
| | - Zuo-Feng Zhang
- Department of Epidemiology, Fielding School of Public Health, University of California, Los Angeles, Los Angeles, CA, USA
| | - Min-So Paek
- Department of Social Welfare, Konkuk University, Chungju, South Korea
| | - Carolyn J. Crandall
- Division of General Internal Medicine, Department of Internal Medicine, David Geffen School of Medicine, University of California, Los Angeles, Los Angeles, CA, USA
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21
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Effects of High-Order Interactions among IGFBP-3 Genetic Polymorphisms, Body Mass Index and Soy Isoflavone Intake on Breast Cancer Susceptibility. PLoS One 2016; 11:e0162970. [PMID: 27631779 PMCID: PMC5024997 DOI: 10.1371/journal.pone.0162970] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Accepted: 08/31/2016] [Indexed: 02/07/2023] Open
Abstract
Background Polymorphisms of IGF-1 and IGFBP-3 and environmental factors may work together to influence insulin-like growth factor (IGF) levels and thus breast cancer (BC) risk. However, very few studies have investigated high-order interactions among these variables. Methods A total of 277 newly diagnosed BC cases and 277 controls were recruited between October 2010 and July 2012. We collected each participant's demographic characteristics, dietary intake, and blood sample. IGF-1 rs1520220 and IGFBP-3 rs2854744 were then genotyped. A multi-analytic strategy combining unconditional logistic regression (ULR), generalized multifactor dimensionality reduction (GMDR), and classification and regression tree (CART) approaches was applied to systematically identify the interactions of the two single nucleotide polymorphisms (SNPs), body mass index (BMI), and daily intake of soy isoflavone (DISI) on BC susceptibility. Results In GMDR analyses, high-order interactions among BMI, DISI, and SNP rs2854744 were identified among overall and postmenopausal women. We also found significant dosage effects on BC risk with an increasing number of exposure factors, namely carrying the rs2854744 AA genotype, DISI <9.85 mg/day, and BMI ≥24 kg/m2 (Ptrend<0.05). Similarly, in CART analyses, compared with individuals having BMI<24kg/m2, DISI<9.85 mg/day, and the rs2854744 CC+CA genotype, BC risk increased significantly for those carrying the rs2854744 AA genotype, with BMI<24 kg/m2 and DISI<9.85 mg/day (OR = 1.95, 95%CI: 1.03–3.69), and also for those with BMI≥24kg/m2 and DISI<9.85 mg/day (OR = 2.13, 95%CI: 1.00–4.51). Similar interaction effects were observed among postmenopausal women. Conclusions This study suggests high-order interactions of the IGFBP-3 rs2854744 AA genotype, BMI≥24kg/m2, and DISI<9.85 mg/day on increased BC risk, particularly among postmenopausal women.
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22
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Schwartz TS, Bronikowski AM. Evolution and Function of the Insulin and Insulin-like Signaling Network in Ectothermic Reptiles: Some Answers and More Questions. Integr Comp Biol 2016; 56:171-84. [PMID: 27252221 DOI: 10.1093/icb/icw046] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
The insulin and insulin-like signaling (IIS) molecular network regulates cellular growth and division, and influences organismal metabolism, growth and development, reproduction, and lifespan. As a group, reptiles have incredible diversity in the complex life history traits that have been associated with the IIS network, yet the research on the IIS network in ectothermic reptiles is sparse. Here, we review the IIS network and synthesize what is known about the function and evolution of the IIS network in ectothermic reptiles. The primary hormones of this network-the insulin-like growth factors 1 and 2 (IGFs) likely function in reproduction in ectothermic reptiles, but the precise mechanisms are unclear, and likely range from influencing mating and ovulation to maternal investment in embryonic development. In general, plasma levels of IGF1 increase with food intake in ectothermic reptiles, but the magnitude of the response to food varies across species or populations and the ages of animals. Long-term temperature treatments as well as thermal stress can alter expression of genes within the IIS network. Although relatively little work has been done on IGF2 in ectothermic reptiles, IGF2 is consistently expressed at higher levels than IGF1 in juvenile ectothermic reptiles. Furthermore, in contrast to mammals that have genetic imprinting that silences the maternal IGF2 allele, in reptiles IGF2 is bi-allelically expressed (based on findings in chickens, a snake, and a lizard). Evolutionary analyses indicate some members of the IIS network are rapidly evolving across reptile species, including IGF1, insulin (INS), and their receptors. In particular, IGF1 displays extensive nucleotide variation across lizards and snakes, which suggests that its functional role may vary across this group. In addition, genetic variation across families and populations in the response of the IIS network to environmental conditions illustrates that components of this network may be evolving in natural populations. The diversity in reproductive physiology, metabolic plasticity, and lifespan among reptiles makes the study of the IIS network in this group a potentially rich avenue for insight into the evolution and function of this network. The field would benefit from future studies that discern the respective functions of IGF1 and IGF2 and how these functions vary across taxa, perfecting additional assays for measuring IIS components, and determining the role of IIS in different tissues.
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Affiliation(s)
- Tonia S Schwartz
- *Department of Biological Sciences, Auburn University, 101 Rouse Life Sciences Bldg, Auburn, AL 36849, USA
| | - Anne M Bronikowski
- Ecology, Evolution & Organismal Biology Department, Iowa State University, Ames, IA 50011, USA
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23
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Horne HN, Sherman ME, Pfeiffer RM, Figueroa JD, Khodr ZG, Falk RT, Pollak M, Patel DA, Palakal MM, Linville L, Papathomas D, Geller B, Vacek PM, Weaver DL, Chicoine R, Shepherd J, Mahmoudzadeh AP, Wang J, Fan B, Malkov S, Herschorn S, Hewitt SM, Brinton LA, Gierach GL. Circulating insulin-like growth factor-I, insulin-like growth factor binding protein-3 and terminal duct lobular unit involution of the breast: a cross-sectional study of women with benign breast disease. Breast Cancer Res 2016; 18:24. [PMID: 26893016 PMCID: PMC4758090 DOI: 10.1186/s13058-016-0678-4] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2015] [Accepted: 01/29/2016] [Indexed: 12/19/2022] Open
Abstract
Background Terminal duct lobular units (TDLUs) are the primary structures from which breast cancers and their precursors arise. Decreased age-related TDLU involution and elevated mammographic density are both correlated and independently associated with increased breast cancer risk, suggesting that these characteristics of breast parenchyma might be linked to a common factor. Given data suggesting that increased circulating levels of insulin-like growth factors (IGFs) factors are related to reduced TDLU involution and increased mammographic density, we assessed these relationships using validated quantitative methods in a cross-sectional study of women with benign breast disease. Methods Serum IGF-I, IGFBP-3 and IGF-I:IGFBP-3 molar ratios were measured in 228 women, ages 40-64, who underwent diagnostic breast biopsies yielding benign diagnoses at University of Vermont affiliated centers. Biopsies were assessed for three separate measures inversely related to TDLU involution: numbers of TDLUs per unit of tissue area (“TDLU count”), median TDLU diameter (“TDLU span”), and number of acini per TDLU (“acini count”). Regression models, stratified by menopausal status and adjusted for potential confounders, were used to assess the associations of TDLU count, median TDLU span and median acini count per TDLU with tertiles of circulating IGFs. Given that mammographic density is associated with both IGF levels and breast cancer risk, we also stratified these associations by mammographic density. Results Higher IGF-I levels among postmenopausal women and an elevated IGF-I:IGFBP-3 ratio among all women were associated with higher TDLU counts, a marker of decreased lobular involution (P-trend = 0.009 and <0.0001, respectively); these associations were strongest among women with elevated mammographic density (P-interaction <0.01). Circulating IGF levels were not significantly associated with TDLU span or acini count per TDLU. Conclusions These results suggest that elevated IGF levels may define a sub-group of women with high mammographic density and limited TDLU involution, two markers that have been related to increased breast cancer risk. If confirmed in prospective studies with cancer endpoints, these data may suggest that evaluation of IGF signaling and its downstream effects may have value for risk prediction and suggest strategies for breast cancer chemoprevention through inhibition of the IGF system. Electronic supplementary material The online version of this article (doi:10.1186/s13058-016-0678-4) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hisani N Horne
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Drive, Rm. 7-E108, Bethesda, MD, 20892-9774, USA. .,Present Affiliation: Food and Drug Administration, Silver Spring, MD, USA.
| | - Mark E Sherman
- Breast and Gynecologic Cancer Research Group, Division of Cancer Prevention, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Ruth M Pfeiffer
- Biostatistics Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Jonine D Figueroa
- Usher Institute of Population Health Sciences and Informatics, The University of Edinburgh, Edinburgh, Scotland.
| | - Zeina G Khodr
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Drive, Rm. 7-E108, Bethesda, MD, 20892-9774, USA.
| | - Roni T Falk
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Drive, Rm. 7-E108, Bethesda, MD, 20892-9774, USA.
| | | | - Deesha A Patel
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Drive, Rm. 7-E108, Bethesda, MD, 20892-9774, USA. .,Present Affiliation: Northwestern University Medical School, Chicago, IL, USA.
| | - Maya M Palakal
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Drive, Rm. 7-E108, Bethesda, MD, 20892-9774, USA.
| | - Laura Linville
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Drive, Rm. 7-E108, Bethesda, MD, 20892-9774, USA.
| | - Daphne Papathomas
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Drive, Rm. 7-E108, Bethesda, MD, 20892-9774, USA.
| | | | | | | | | | - John Shepherd
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA.
| | - Amir Pasha Mahmoudzadeh
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA.
| | - Jeff Wang
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA. .,Present Affiliation: Hokkaido University, Graduate School of Medicine, Sapporo, Japan.
| | - Bo Fan
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA.
| | - Serghei Malkov
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA.
| | - Sally Herschorn
- Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, CA, USA.
| | - Stephen M Hewitt
- Laboratory of Pathology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Louise A Brinton
- Office of the Director, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA.
| | - Gretchen L Gierach
- Metabolic Epidemiology Branch, Division of Cancer Epidemiology and Genetics, National Cancer Institute, National Institutes of Health, 9609 Medical Center Drive, Rm. 7-E108, Bethesda, MD, 20892-9774, USA.
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Nimptsch K, Pischon T. Obesity Biomarkers, Metabolism and Risk of Cancer: An Epidemiological Perspective. Recent Results Cancer Res 2016; 208:199-217. [PMID: 27909909 DOI: 10.1007/978-3-319-42542-9_11] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Obesity is associated with metabolic alterations that may pose a biological link between body fatness and risk of cancer. Elucidating the role of obesity-related biomarkers in cancer development is essential for developing targeted strategies aiming at obesity-associated cancer prevention. Molecular epidemiological studies of the past decades have provided evidence that major hormonal pathways linking obesity and cancer risk include the insulin and insulin-like growth factor-1 (IGF-1) axis, sex-steroid hormones, adipokines and chronic low-grade inflammation. These pathways are interrelated with each other, and their importance varies by obesity-related cancer type. The insulin/IGF-1 axis has been implicated to play an important mediating role in the association between obesity and risk of pancreatic, colorectal and prostate cancer. Endogenous sex-steroid hormone concentrations, in particular obesity-associated pre-diagnostic elevations of estrogens and androgens, play an important role in postmenopausal breast cancer and endometrial cancer development. The adipokines adiponectin and leptin and adipocyte-mediated chronic low-grade inflammation represented by the acute-phase C-reactive protein may explain a substantial part of the association between obesity and risk of colorectal cancer. There is less evidence on whether these hormonal pathways play a mediating role in other obesity-associated types of cancer. In this chapter, the molecular epidemiologic evidence from prospective studies relating circulating obesity-related biomarkers to cancer risk is summarized, taking into account available evidence from Mendelian Randomization investigations aiming at improving causal inference.
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Affiliation(s)
- Katharina Nimptsch
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Robert-Rössle-Straße 10, 13125, Berlin, Germany.
| | - Tobias Pischon
- Molecular Epidemiology Research Group, Max Delbrück Center for Molecular Medicine in the Helmholtz Association (MDC), Robert-Rössle-Straße 10, 13125, Berlin, Germany
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Akwo EA, Cavanaugh KL, Ikizler TA, Blot WJ, Lipworth L. Increased body mass index may be associated with greater risk of end-stage renal disease in whites compared to blacks: A nested case-control study. BMC Nutr 2015; 1. [PMID: 27239330 DOI: 10.1186/s40795-015-0022-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND The relationship between body mass index (BMI) and end-stage renal disease (ESRD) may differ between blacks and whites due to underlying metabolic differences. METHODS We conducted a nested case-control study of 631 incident ESRD cases and 1,897 matched controls within the Southern Community Cohort Study. Current weight, height, and weight at age 21 were reported at enrollment. Occurrence of ESRD was ascertained by linkage with the United States Renal Data System. With normal BMI (18.5-24.9 kg/m2) as reference, conditional logistic regression was used to calculate adjusted odds ratios (OR) and corresponding 95% confidence intervals (CI) for ESRD across other BMI categories by race. In subsequent analysis, BMI at age 21 was modeled using restricted cubic splines with 5 knots. Predicted probabilities of incident ESRD were computed from the multivariable logistic models and plotted against BMI at age 21. RESULTS Among blacks, odds of ESRD were significantly increased among those who were overweight (OR: 1.41; 95%CI: 1.09, 1.83) or obese (OR: 2.56; 95%CI: 1.88, 3.47) at age 21. Among whites, the association between ESRD and BMI at age 21 was more pronounced, with corresponding ORs of 2.13 (95%CI: 0.92, 4.93) and 7.46 (95%CI: 2.90, 19.21; p-interaction 0.05). Only among whites was high BMI at enrollment associated with ESRD risk; OR for BMI≥40 kg/m2, was 3.31 (95%CI: 1.08, 10.12). The plot of the predicted probabilities of incident ESRD vs BMI at age 21 showed a monotonic increase in the probability of ESRD after a BMI cutoff ≈ 25Kg/m2 in both whites and blacks but the slope of the curve for whites appeared greater. CONCLUSIONS Our results suggest racial differences in the relationship between BMI, both in early adulthood and middle age, and ESRD. These findings warrant further research into understanding the underlying metabolic differences that may explain these differences.
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Affiliation(s)
- Elvis A Akwo
- Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Kerri L Cavanaugh
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Vanderbilt Center for Kidney Disease, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - Talat Alp Ikizler
- Division of Nephrology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Vanderbilt Center for Kidney Disease, Vanderbilt University Medical Center, Nashville, Tennessee, USA
| | - William J Blot
- Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA; International Epidemiology Institute, Rockville, Maryland, USA
| | - Loren Lipworth
- Division of Epidemiology, Department of Medicine, Vanderbilt University Medical Center, Nashville, Tennessee, USA; Vanderbilt Center for Kidney Disease, Vanderbilt University Medical Center, Nashville, Tennessee, USA
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McCullough LE, Miller EE, Wang Q, Li JY, Liu L, Li H, Zhang J, Smith JS. Cross-Sectional Associations between Body Size, Circulating Sex-Steroid Hormones and IGF Components among Healthy Chinese Women. PLoS One 2015; 10:e0137686. [PMID: 26352264 PMCID: PMC4564271 DOI: 10.1371/journal.pone.0137686] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2015] [Accepted: 08/19/2015] [Indexed: 01/03/2023] Open
Abstract
The incidence of breast cancer has increased in Asian countries and rates of hormone receptor (HR) negative breast cancer exceed those of Western countries. Epidemiologic data suggest that the association between body size and BC risk may vary by HR status, and could differ geographically. While body size may influence BC risk by moderating the synthesis and metabolism of circulating sex-steroid hormones, insulin-like growth factor (IGF)-1 and related binding proteins, there is a dearth of literature among Asian women. We aimed to examine these specific associations in a sample of Chinese women. In Sichuan Province 143 women aged ≥40 years were recruited through outpatient services (2011–2012). Questionnaires, anthropometric measurements, and blood samples were utilized for data collection and linear regression was applied in data analyses. Among women <50 years we observed a non-monotonic positive association between body mass index (BMI) and 17β-estradiol, and a reversed J-shaped association between BMI and IGF-1 (p ≤0.05). We observed similar associations between waist-to-hip ratio and these markers. Our finding of augmented IGF-1 among women with low body mass may have implications for understanding breast tumor heterogeneity in diverse populations and should be evaluated in larger prospective studies with cancer outcomes.
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Affiliation(s)
- Lauren E. McCullough
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina-Chapel Hill, 135 Dauer Drive, Chapel Hill, North Carolina, 27599, United States of America
- Lineberger Comprehensive Cancer Center, 101 Manning Drive, Chapel Hill, North Carolina, 27514, United States of America
| | - Erline E. Miller
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina-Chapel Hill, 135 Dauer Drive, Chapel Hill, North Carolina, 27599, United States of America
| | - Qiong Wang
- Department of Epidemiology and Biostatistics, West China School of Public Health, Sichuan University, 16 Ren Min Nan Lu, Chengdu, 610041, P.R. China
| | - Jia-yuan Li
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina-Chapel Hill, 135 Dauer Drive, Chapel Hill, North Carolina, 27599, United States of America
- Department of Epidemiology and Biostatistics, West China School of Public Health, Sichuan University, 16 Ren Min Nan Lu, Chengdu, 610041, P.R. China
- * E-mail:
| | - Li Liu
- The Comprehensive Guidance Center of Women's Health, Chengdu Women’s and Children’s Central Hospital, Shi Ye Street, Qingyang District, Chengdu, 610015, P.R. China
| | - Hui Li
- Department of Epidemiology and Biostatistics, West China School of Public Health, Sichuan University, 16 Ren Min Nan Lu, Chengdu, 610041, P.R. China
| | - Jing Zhang
- The Comprehensive Guidance Center of Women's Health, Chengdu Women’s and Children’s Central Hospital, Shi Ye Street, Qingyang District, Chengdu, 610015, P.R. China
| | - Jennifer S. Smith
- Department of Epidemiology, Gillings School of Global Public Health, University of North Carolina-Chapel Hill, 135 Dauer Drive, Chapel Hill, North Carolina, 27599, United States of America
- Lineberger Comprehensive Cancer Center, 101 Manning Drive, Chapel Hill, North Carolina, 27514, United States of America
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Moons T, De Hert M, Kenis G, Viechtbauer W, van Os J, Gohlke H, Claes S, van Winkel R. No association between genetic or epigenetic variation in insulin growth factors and antipsychotic-induced metabolic disturbances in a cross-sectional sample. Pharmacogenomics 2015; 15:951-62. [PMID: 24956249 DOI: 10.2217/pgs.14.46] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
AIM Second-generation antipsychotics (SGA) are known to induce metabolic disturbances. Genetic pathways, such as the IGF pathway could be associated with increased metabolic syndrome (MetS). Additionally, IGF2 methylation varies as a function of environmental influences and is associated with schizophrenia and MetS. The current study aims to evaluate whether genetic and epigenetic variation in genes of the IGF pathway are associated with metabolic disturbances in patients under treatment with SGAs. METHODS Cross-sectional metabolic data from 438 patients with schizophrenia spectrum disorder was analyzed. Using the Sequenom MassARRAY iPLEX(TM) platform, 27 SNPs of the IGF1 and IGF2 genes and the IGF receptors IGF1R and IGF2R were genotyped. Methylation status of seven IGF2 CpG dinucleotides was evaluated using a Sequenom MALDI-TOF spectrometer. RESULTS & CONCLUSION There was a significant association between IGF2 methylation and genotype, but no significant association between genetic or epigenetic variability and metabolic parameters in the present study.
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Affiliation(s)
- Tim Moons
- GRASP Research Unit, University Psychiatric Centre Catholic University Leuven, Herestraat 49, 3000 Leuven, Belgium
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Lee SC, Tsai SM, Hou MF, Tien LY, Wu SH, Hou LA, Tsai JM, Tsai LY. Increased Igf-I/Igfbp-3 Ratios in Postmenopausal Taiwanese with Breast Cancer, Irrespective of Er and Pr Statuses and Her2 Expression in a Case-Control Study. J Clin Lab Anal 2014; 30:58-64. [PMID: 25385317 DOI: 10.1002/jcla.21815] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2014] [Revised: 07/03/2014] [Accepted: 08/25/2014] [Indexed: 11/12/2022] Open
Abstract
BACKGROUND In most research, there were positive associations between the insulin-like growth factor I (IGF-I) status, including IGF-I, insulin-like growth factor binding protein-3 (IGFBP-3), and ratio of IGF-I/IGFBP-3, and risks of breast cancer (BC), which was influenced by many factors, including hormone statuses and ethnicity. Therefore, the alterations of the IGF-I status in Taiwanese women with BC by menopausal statuses and hormone receptors were investigated. METHODS The levels of IGF-I and IGFBP-3 were determined by the enzyme-labeled chemiluminescent immunometric assay, and the protein expression of estrogen receptor (ER), progesterone receptor (PR), and human epidermal growth factor 2 (HER2) on paraffin-embedded sections of tissues with BC were analyzed by the immunohistochemical method. RESULTS The ratios of IGF-I/IGFBP-3 were significantly higher in the women with BC than those in the controls, but not of the levels of IGF-I and IGFBP-3; furthermore, the significantly higher ratios were found only in the postmenopausal status. In addition, there was no significant difference between the IGF-I status and ER and PR statuses, and HER2 expression, respectively, in the women with BC. CONCLUSIONS The ratios of IGF-I/IGFBP-3 were increased in postmenopausal Taiwanese women with BC, irrespective of their ages, ER and PR statuses, and HER2 expression.
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Affiliation(s)
- Su-Chen Lee
- Department of Laboratory Medicine, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Shih-Meng Tsai
- Department of Public Health and Environmental Medicine, Faculty of Medicine, Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Ming-Feng Hou
- Department of Surgery and Faculty of Medicine, Kaohsiung Medical University Hospital and Kaohsiung Medical University, Kaohsiung, Taiwan
| | - Li-Ying Tien
- Division of General Laboratory, Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung, Taiwan
| | - Szu-Hsien Wu
- Division of Plastic Surgery and Department of Surgery, Taipei Veterans General Hospital and Yang Ming University, Taipei, Taiwan
| | - Lisa Ann Hou
- Herman Ostrow School of Dentistry, University of Southern California, Los Angeles, California
| | - Joseph M Tsai
- University of California San Diego, La Jolla, California
| | - Li-Yu Tsai
- Department of Medical Laboratory Science and Biotechnology, College of Health Sciences, Kaohsiung Medical University, Kaohsiung, Taiwan
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Paxton RJ, Jung SY, Vitolins MZ, Fenton J, Paskett E, Pollak M, Hays-Grudo J, Hursting SD, Chang S. Associations between time spent sitting and cancer-related biomarkers in postmenopausal women: an exploration of effect modifiers. Cancer Causes Control 2014; 25:1427-37. [PMID: 25238978 PMCID: PMC4316818 DOI: 10.1007/s10552-014-0434-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2014] [Accepted: 07/03/2014] [Indexed: 02/06/2023]
Abstract
PURPOSE Despite evidence that prolonged periods of sitting may influence biological mediators of cancer development, few studies have considered these relationships in a cancer-specific context. METHODS This cross-sectional study included 755 postmenopausal women enrolled in an ancillary study of the Women's Health Initiative. Plasma levels of Insulin-like growth factor-I (IGF-I), IGF-binding protein-3, leptin, insulin, C-peptide, C-reactive protein (CRP), and Interleukin (IL)-6 were measured. The time spent sitting per day was categorized as quartiles (Qs). The relationships between sedentary time and biomarkers were modified by race, physical activity, and exogenous estrogen use. RESULTS IGF-I levels among African American (AA) women were higher than those of white women across the Qs of sedentary time. Likewise, IL-6 levels in AA women were higher than those in white women at Q3 and Q4 of sedentary time. IGFBP-3 levels were higher and insulin levels were lower across the Qs of sedentary time among women meeting guidelines for physical activity than women who were not. Additionally, CRP levels were higher among estrogen users than nonusers at Q1, Q2, and Q4 of sedentary time. CONCLUSIONS These results suggest that relationship between time spent sitting and cancer-related biomarkers may not be simply linear, but differ in the context of effect modifiers.
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Affiliation(s)
- Raheem J. Paxton
- Department of Behavioral and Community Health, School of Public Health, University of North Texas Health Science Center, Fort Worth, TX, USA
| | - Su Yon Jung
- Division of Cancer Prevention and Population Sciences, Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Cancer Prevention Building, CPB7.3563, 1155 Pressler Street, Houston, TX 77030, USA
| | - Mara Z. Vitolins
- Division of Public Health Sciences, Department of Epidemiology and Prevention, Wake Forest School of Medicine, Winston-Salem, NC, USA
| | - Jenifer Fenton
- Department of Food Science and Human Nutrition, Michigan State University, East Lansing, MI, USA
| | - Electra Paskett
- Division of Cancer Prevention and Control, College of Medicine, Ohio State University, Columbus, OH, USA
| | - Michael Pollak
- Departments of Medicine and Oncology, McGill University, Montreal, QC, Canada
| | - Jennifer Hays-Grudo
- Department of Human Development and Family Sciences, Oklahoma State University, Stillwater, OK, USA
| | - Stephen D. Hursting
- Department of Nutritional Sciences, The University of Texas at Austin, Austin, TX, USA
| | - Shine Chang
- Division of Cancer Prevention and Population Sciences, Department of Epidemiology, The University of Texas MD Anderson Cancer Center, Cancer Prevention Building, CPB7.3563, 1155 Pressler Street, Houston, TX 77030, USA
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Jung SY, Vitolins MZ, Paskett ED, Chang S. Exogenous estrogen as mediator of racial differences in bioactive insulin-like growth factor-I levels among postmenopausal women. J Gerontol A Biol Sci Med Sci 2014; 70:495-502. [PMID: 25238773 DOI: 10.1093/gerona/glu164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND The role of exogenous estrogen use in racial differences in insulin-like growth factor-I (IGF-I) levels which affect cancer risk is unclear. We investigated whether the relationship between race and circulating bioactive IGF-I proteins was mediated by exogenous estrogen and the extent to which exogenous estrogen influenced the race-IGF-I relationship in postmenopausal women. METHODS This cross-sectional study included 636 white and 133 African American postmenopausal women enrolled in an ancillary study of the Women's Health Initiative Observational Study. To assess exogenous estrogen use (nonusers [n = 262] vs users [n = 507]) as a mediator of the race-IGF-I relationship, we used the Baron-Kenny method and an estimation of the proportional change in the odd ratios for IGF-I levels on race plus a bootstrapping test for the significance of the mediation effect. RESULTS Compared with white women, African American women were more likely to have high IGF-I levels and less likely to use exogenous estrogen. After accounting for race, estrogen nonusers had higher IGF-I levels than estrogen users did. Among oral contraceptive ever users, exogenous estrogen had a strong mediation effect (67%; p = .018) in the race-IGF-I relationship. In the women with a history of hypertension, exogenous estrogen explained racial differences in IGF-I levels to a modest degree (23%; p = .029). CONCLUSIONS Exogenous estrogen use has a potentially important role in disparities in IGF-I bioactivity between postmenopausal African American and white women. A history of oral contraceptive use and hypertension may be part of the interconnected hormonal pathways related to racial differences in IGF-I levels.
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Affiliation(s)
- Su Yon Jung
- Department of Epidemiology, Division of Cancer Prevention and Population Sciences, The University of Texas MD Anderson Cancer Center, Houston.
| | - Mara Z Vitolins
- Department of Epidemiology and Prevention, Division of Public Health Sciences, Wake Forest School of Medicine, Winston-Salem, North Carolina
| | - Electra D Paskett
- Division of Cancer Prevention and Control, College of Medicine, Ohio State University, Columbus
| | - Shine Chang
- Department of Epidemiology, Division of Cancer Prevention and Population Sciences, The University of Texas MD Anderson Cancer Center, Houston
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Sarkissyan S, Sarkissyan M, Wu Y, Cardenas J, Koeffler HP, Vadgama JV. IGF-1 regulates Cyr61 induced breast cancer cell proliferation and invasion. PLoS One 2014; 9:e103534. [PMID: 25062088 PMCID: PMC4111618 DOI: 10.1371/journal.pone.0103534] [Citation(s) in RCA: 35] [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: 04/24/2014] [Accepted: 06/30/2014] [Indexed: 11/18/2022] Open
Abstract
Background Studies from our laboratory and others have shown that cysteine-rich 61 (Cyr61) may be involved in tumor proliferation and invasion. In earlier studies, we demonstrated increased insulin-like growth factor-I (IGF-1) is associated with breast tumor formation and poor clinical outcomes. In our current study we have investigated IGF-1 regulation of Cyr61 and whether targeting IGF-1 could inhibit Cyr61 induced tumor growth and proliferation. Methods Several ATCC derived normal and breast cancer cell lines were used in this study: MDA-MB231, BT474, MCF-7, and SKBR3. We also tested cells stably transfected in our laboratory with active Akt1 (pAkt; SKBR3/AA and MCF-7/AA) and dominant negative Akt1 (SKBR3/DN and MCF-7/DN). In addition, we used MCF-7 cells transfected with full length Cyr61 (CYA). Monolayer cultures treated with IGF-1 were analyzed for Cyr61 expression by RT-PCR and immunohistochemical staining. Migration assays and MTT based proliferation assays were used to determine invasive characteristics in response to IGF-1/Cyr61 activation. Results Cells with activated Akt have increased levels of Cyr61. Conversely, cells with inactive Akt have decreased levels of Cyr61. IGF-1 treatment increased Cyr61 expression significantly and cells with high level of Cyr61 demonstrate increased invasiveness and proliferation. Cyr61 overexpression and activation led to decrease in E-cadherin and decrease in FOXO1. Inhibition of the PI3K and MAPK pathways resulted in significant decrease in invasiveness and proliferation, most notably in the PI3K pathway inhibited cells. Conclusion The findings of this study show that IGF-1 upregulates Cyr61 primarily through activation of the Akt-PI3K pathway. IGF-1 induced MAPK plays a partial role. Increase in Cyr61 leads to increase in breast cancer cell growth and invasion. Hence, targeting Cyr61 and associated pathways may offer an opportunity to inhibit IGF-1 mediated Cyr61 induced breast cancer growth and invasion.
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Affiliation(s)
- Suren Sarkissyan
- Division of Cancer Research and Training, Center to Eliminate Cancer Health Disparities, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, California, United States of America
| | - Marianna Sarkissyan
- Division of Cancer Research and Training, Center to Eliminate Cancer Health Disparities, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, California, United States of America
| | - Yanyuan Wu
- Division of Cancer Research and Training, Center to Eliminate Cancer Health Disparities, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, California, United States of America
- Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, California, United States of America
| | - Jessica Cardenas
- Division of Cancer Research and Training, Center to Eliminate Cancer Health Disparities, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, California, United States of America
| | - H. Phillip Koeffler
- Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, California, United States of America
- Division of Hematology/Oncology, Department of Internal Medicine, Cedars-Sinai Medical Center, Los Angeles, California, United States of America
| | - Jaydutt V. Vadgama
- Division of Cancer Research and Training, Center to Eliminate Cancer Health Disparities, Department of Internal Medicine, Charles R. Drew University of Medicine and Science, Los Angeles, California, United States of America
- Jonsson Comprehensive Cancer Center, University of California Los Angeles, Los Angeles, California, United States of America
- * E-mail:
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Livingstone C, Borai A. Insulin-like growth factor-II: its role in metabolic and endocrine disease. Clin Endocrinol (Oxf) 2014; 80:773-81. [PMID: 24593700 DOI: 10.1111/cen.12446] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Revised: 02/26/2014] [Accepted: 02/27/2014] [Indexed: 10/25/2022]
Abstract
Insulin-like growth factor-II (IGF-II) is a widely expressed 7·5 kDa mitogenic peptide hormone. Although it is abundant in serum, understanding of its physiological role is limited compared with that of IGF-I. IGF-II regulates foetal development and differentiation, but its role in adults is less well understood. Evidence suggests roles in a number of tissues including skeletal muscle, adipose tissue, bone and ovary. Altered IGF-II expression has been observed in metabolic conditions, notably obesity, diabetes and the polycystic ovary syndrome. This article summarizes what is known about the actions of IGF-II and its dysregulation in metabolic and endocrine diseases. The possible causes and consequences of dysregulation are discussed along with the implications for diagnostic tests and future research.
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Affiliation(s)
- Callum Livingstone
- Peptide Hormones Supraregional Assay Service (SAS), Department of Clinical Biochemistry, Royal Surrey County Hospital NHS Trust, Guildford, UK; Faculty of Health and Medical Sciences, University of Surrey, Guildford, UK
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Abstract
Insulin-like growth factor 2 (IGF2) is a 7.5 kDa mitogenic peptide hormone expressed by liver and many other tissues. It is three times more abundant in serum than IGF1, but our understanding of its physiological and pathological roles has lagged behind that of IGF1. Expression of the IGF2 gene is strictly regulated. Over-expression occurs in many cancers and is associated with a poor prognosis. Elevated serum IGF2 is also associated with increased risk of developing various cancers including colorectal, breast, prostate and lung. There is established clinical utility for IGF2 measurement in the diagnosis of non-islet cell tumour hypoglycaemia, a condition characterised by a molar IGF2:IGF1 ratio >10. Recent advances in understanding of the pathophysiology of IGF2 in cancer have suggested much novel clinical utility for its measurement. Measurement of IGF2 in blood and genetic and epigenetic tests of the IGF2 gene may help assess cancer risk and prognosis. Further studies will determine whether these tests enter clinical practice. New therapeutic approaches are being developed to target IGF2 action. This review provides a clinical perspective on IGF2 and an update on recent research findings.
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Affiliation(s)
- Callum Livingstone
- Peptide Hormones Supraregional Assay Service (SAS), Clinical Biochemistry Department, Royal Surrey County Hospital NHS Trust, Guildford, Surrey GU2 7XX, UK Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 5XH, UK
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Abstract
IGF-I (insulin-like growth factor-I) is a peptide hormone, produced predominantly by the liver in response to pituitary GH (growth hormone), which is involved in a wide variety of physiological processes. It acts in an endocrine, paracrine and autocrine manner to promote growth. The production of IGF-I signals the availability of nutrients needed for its anabolic actions. Recently, there has been growing interest in its role in health and disease. IGF-I has long been known to be regulated by nutrition and dysregulated in states of under- and over-nutrition, its serum concentrations falling in malnutrition and responding promptly to refeeding. This has led to interest in its utility as a nutritional biomarker. A considerable evidence base supports utility for measurement of IGF-I in nutritional contexts. Its concentration may be valuable in providing information on nutritional status, prognosis and in monitoring nutritional support. However, it is insufficiently specific for use as a screening test for under nutrition as its serum concentration is influenced by many factors other than nutritional status, notably the APR (acute-phase response) and endocrine conditions. Concentrations should be interpreted along with clinical findings and the results of other investigations such as CRP (C-reactive protein). More recently, there has been interest in free IGF-I which holds promise as a nutritional marker. The present review covers nutritional regulation of IGF-I and its dysregulation in disease, then goes on to review recent studies supporting its utility as a nutritional marker in clinical contexts. Although not currently recommended by clinical guidelines, it is likely that, in time, measurement of IGF-I will become a routine part of nutritional assessment in a number of these contexts.
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Savage T, Derraik JGB, Miles HL, Mouat F, Hofman PL, Cutfield WS. Increasing maternal age is associated with taller stature and reduced abdominal fat in their children. PLoS One 2013; 8:e58869. [PMID: 23527040 PMCID: PMC3604016 DOI: 10.1371/journal.pone.0058869] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2012] [Accepted: 02/11/2013] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Maternal age at childbirth continues to increase worldwide. We aimed to assess whether increasing maternal age is associated with changes in childhood height, body composition, and metabolism. METHODS 277 healthy pre-pubertal children, born 37-41 weeks gestation were studied. Assessments included: height and weight corrected for parental measurements, DEXA-derived body composition, fasting lipids, glucose, insulin, and hormonal profiles. Subjects were separated according to maternal age at childbirth: <30, 30-35, and >35 years. RESULTS Our cohort consisted of 126 girls and 151 boys, aged 7.4 ± 2.2 years (range 3-10); maternal age at childbirth was 33.3 ± 4.7 years (range 19-44). Children of mothers aged >35 and 30-35 years at childbirth were taller than children of mothers aged <30 years by 0.26 (p = 0.002) and 0.23 (p = 0.042) SDS, respectively. There was a reduction in childhood BMISDS with increasing maternal age at childbirth, and children of mothers aged >35 years at childbirth were 0.61 SDS slimmer than those of mothers <30 years (p = 0.049). Children of mothers aged 30-35 (p = 0.022) and >35 (p = 0.036) years at childbirth had abdominal adiposity reduced by 10% and 13%, respectively, compared to those in the <30 group. Children of mothers aged 30-35 years at childbirth displayed a 19% increase in IGF-I concentrations compared to offspring in <30 group (p = 0.042). Conversely, IGF-II concentrations were lower among the children born to mothers aged 30-35 (6.5%; p = 0.004) and >35 (8.1%; p = 0.005) compared to those of mothers aged <30 years. Girls of mothers aged 30-35 years at childbirth also displayed improved HOMA-IR insulin sensitivity (p = 0.010) compared to girls born to mothers aged <30 years. CONCLUSIONS Increasing maternal age at childbirth is associated with a more favourable phenotype (taller stature and reduced abdominal fat) in their children, as well as improved insulin sensitivity in girls.
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Affiliation(s)
- Tim Savage
- Liggins Institute, University of Auckland, Auckland, New Zealand
- Gravida: National Centre for Growth and Development, Auckland, New Zealand
| | | | - Harriet L. Miles
- Liggins Institute, University of Auckland, Auckland, New Zealand
- Gravida: National Centre for Growth and Development, Auckland, New Zealand
| | - Fran Mouat
- Starship Children's Hospital, Auckland District Health Board, Auckland, New Zealand
| | - Paul L. Hofman
- Liggins Institute, University of Auckland, Auckland, New Zealand
- Gravida: National Centre for Growth and Development, Auckland, New Zealand
| | - Wayne S. Cutfield
- Liggins Institute, University of Auckland, Auckland, New Zealand
- Gravida: National Centre for Growth and Development, Auckland, New Zealand
- * E-mail:
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Llanos AA, Brasky TM, Dumitrescu RG, Marian C, Makambi KH, Kallakury BVS, Spear SL, Perry DJ, Convit RJ, Platek ME, Adams-Campbell LL, Freudenheim JL, Shields PG. Plasma IGF-1 and IGFBP-3 may be imprecise surrogates for breast concentrations: an analysis of healthy women. Breast Cancer Res Treat 2013; 138:571-9. [PMID: 23456194 DOI: 10.1007/s10549-013-2452-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2012] [Accepted: 02/18/2013] [Indexed: 01/18/2023]
Abstract
We investigated insulin-like growth factor (IGF)-1 and IGF binding protein (IGFBP)-3 concentrations in histologically normal breast tissues and assessed their association with plasma concentrations, and breast cancer risk factors. IGF-1 and IGFBP-3 were assessed in plasma and breast tissues of 90 women with no history of any cancer and undergoing reduction mammoplasty. Pearson correlations and ANOVAs were used to describe plasma-breast associations and biomarker differences by breast cancer risk factors, respectively. Multivariable regression models were used to determine associations between risk factors, and breast IGF-1 and IGFBP-3. The mean age of the study sample was 37.3 years, 58 % were white, and generally these women were obese (mean BMI = 30.8 kg/m(2)). We observed no plasma-breast correlation for IGF-1, IGFBP-3, or IGF-1/IGFBP-3 (r = -0.08, r = 0.14, and r = 0.03, respectively; p-values >0.05). Through age- and BMI-adjusted analysis, BMI and years of oral contraceptive (OC) use were inversely associated with breast IGF-1 (p-values = 0.02 and 0.003, respectively) and age was associated with breast IGFBP-3 (p = 0.01), while breast IGF-1/IGFBP-3 was higher in blacks than whites (1.08 vs. 0.68, p = 0.04) and associated with age and BMI (p-values = 0.03 and 0.002, respectively). In multivariable-adjusted models, some breast cancer risk factors studied herein explained 24, 10, and 15 % of the variation in breast IGF-1, IGFBP-3, and IGF-1/IGFBP-3, respectively. While reasons for the lack of plasma-breast hormone correlations in these cancer-free women are unknown, several factors were shown to be associated with breast concentrations. The lack of correlation between blood and tissue IGF-1 and IGFBP-3 suggests that studies of breast cancer risk assessing blood IGF-1 and IGFBP-3 may have important limitations in understanding their role in breast carcinogenesis.
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Affiliation(s)
- Adana A Llanos
- Division of Population Sciences, The Ohio State University Comprehensive Cancer Center, 1590 North High Street, Suite 525, Columbus, OH 43201, USA.
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Serra MC, Blumenthal JB, Ryan AS. IMPACT OF WEIGHT LOSS AND AEROBIC EXERCISE ON NUTRITION AND BONE MINERAL DENSITY IN AFRICAN AMERICAN AND CAUCASIAN POSTMENOPAUSAL WOMEN. THE JOURNAL OF AGING RESEARCH & CLINICAL PRACTICE 2013; 2:11-16. [PMID: 26005668 PMCID: PMC4440860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
BACKGROUND Weight loss is often recommended for obese women to reduce fat mass and the risk of developing chronic diseases, but may result in a reduction of bone mineral density (BMD). African Americans have greater BMD than Caucasians, but differences in the decrease in BMD between these races following weight reduction with and without exercise are unknown. OBJECTIVES The purpose of this study was to investigate the hypothesis that Caucasian women would lose greater amounts of BMD than African American women after undergoing weight loss, but that the addition of aerobic exercise would attenuate the loss in both races. DESIGN Longitudinal. PARTICIPANTS African American (n=34) and Caucasian (n=63), overweight and obese postmenopausal (age 45-80 years). INTERVENTION Six months of weight loss (250-350 kcal/days deficit) alone (WL) or in combination with aerobic exercise consisting of 3 days/week treadmill training at >85% of heart rate reserve for 45 min (AEX+WL). MEASUREMENTS Femoral neck, total femur, and lumbar BMD, VO2max, urinary calcium, and dietary intake. RESULTS African American women had a greater body weight, BMI, and BMD all sites and lower dietary protein and calcium intakes than Caucasian women (all P<0.05). Weight decreased 7.5% in both groups and VO2max increased only after AEX+WL (intervention effect, P<0.001). Both races lost ~1% of their femoral neck and total femur BMD following the interventions (P's<0.01). There were no race by intervention interactions. There was a trend for the women undergoing WL to lose greater femoral neck BMD than those in AEX+WL (P=0.07). There were no associations between changes in BMD and changes in VO2max, urinary calcium, or dietary intake. CONCLUSIONS Our data indicate that despite beginning the interventions with greater BMD than Caucasian postmenopausal women, African Americans were not spared from losses of femoral neck and total femur BMD following six months of weight loss, but that addition of aerobic exercise to weight loss tends to attenuate the decreases in femoral neck BMD in both races.
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Affiliation(s)
- M C Serra
- Baltimore Maryland VA Medical Center & University of Maryland School of Medicine, USA
| | - J B Blumenthal
- Baltimore Maryland VA Medical Center & University of Maryland School of Medicine, USA
| | - A S Ryan
- Baltimore Maryland VA Medical Center & University of Maryland School of Medicine, USA
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The maternal womb: a novel target for cancer prevention in the era of the obesity pandemic? Eur J Cancer Prev 2012; 20:539-48. [PMID: 21701386 DOI: 10.1097/cej.0b013e328348fc21] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The dramatic rise in worldwide prevalence of obesity has necessitated the search for more efficacious antiobesity strategies to counter the increased cancer risks in overweight and obese individuals. The mechanistic pathways linking obesity status with adult chronic diseases such as cancer remain incompletely understood. A growing body of evidence suggests that novel approaches and interventional agents to disrupt the feed-forward cycle of maternal to offspring obesity transfer that is initiated in utero will be important for stemming both the obesity pandemic and the associated increase in cancer incidence. The convergence of multiple research areas including those encompassing the insulin and insulin-like growth factor systems, epigenetics, and stem cell biology is providing insights into the potential for cancer prevention in adult offspring previously exposed to the intrauterine environment of overweight/obese mothers. Here, we review the current state of this nascent research field, with a focus on three major cancers, namely breast, colorectal, and liver, and suggest some possible future directions to optimize its impact for the health of future generations.
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Livingstone C. The insulin-like growth factor system and nutritional assessment. SCIENTIFICA 2012; 2012:768731. [PMID: 24278739 PMCID: PMC3820641 DOI: 10.6064/2012/768731] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Accepted: 07/05/2012] [Indexed: 06/02/2023]
Abstract
Over recent years there has been considerable interest in the role of the insulin-like growth factor (IGF) system in health and disease. It has long been known to be dysregulated in states of under- and overnutrition, serum IGF-I levels falling in malnourished patients and responding promptly to nutritional support. More recently, other proteins in this system have been observed to be dysregulated in both malnutrition and obesity. Currently no biochemical marker is sufficiently specific for use in screening for malnutrition, but levels may be valuable in providing information on nutritional status and in monitoring of nutritional support. All have limitations as nutritional markers in that their serum levels are influenced by factors other than nutritional status, most importantly the acute phase response (APR). Levels should be interpreted along with clinical findings and the results of other investigations such as C-reactive protein (CRP). This paper reviews data supporting the use of proteins of the IGF system as nutritional markers.
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Affiliation(s)
- Callum Livingstone
- Peptide Hormones Supraregional Assay Service (SAS), Clinical Biochemistry Department, Royal Surrey County Hospital, Guildford, Surrey GU2 7XX, UK
- Faculty of Health and Medical Sciences, University of Surrey, Guildford, Surrey GU2 5XH, UK
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Perkins E, Murphy SK, Murtha AP, Schildkraut J, Jirtle RL, Demark-Wahnefried W, Forman MR, Kurtzberg J, Overcash F, Huang Z, Hoyo C. Insulin-like growth factor 2/H19 methylation at birth and risk of overweight and obesity in children. J Pediatr 2012; 161:31-9. [PMID: 22341586 PMCID: PMC3360130 DOI: 10.1016/j.jpeds.2012.01.015] [Citation(s) in RCA: 93] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 11/28/2011] [Accepted: 01/06/2012] [Indexed: 01/04/2023]
Abstract
OBJECTIVE To determine whether aberrant DNA methylation at differentially methylated regions (DMRs) regulating insulin-like growth factor 2 (IGF2) expression in umbilical cord blood is associated with overweight or obesity in a multiethnic cohort. STUDY DESIGN Umbilical cord blood leukocytes of 204 infants born between 2005 and 2009 in Durham, North Carolina, were analyzed for DNA methylation at two IGF2 DMRs by using pyrosequencing. Anthropometric and feeding data were collected at age 1 year. Methylation differences were compared between children >85th percentile of the Centers for Disease Control and Prevention growth charts weight-for-age (WFA) and children ≤ 85th percentile of WFA at 1 year by using generalized linear models, adjusting for post-natal caloric intake, maternal cigarette smoking, and race/ethnicity. RESULTS The methylation percentages at the H19 imprint center DMR was higher in infants with WFA >85th percentile (62.7%; 95% CI, 59.9%-65.5%) than in infants with WFA ≤ 85th percentile (59.3%; 95% CI, 58.2%-60.3%; P = .02). At the intragenic IGF2 DMR, methylation levels were comparable between infants with WFA ≤ 85th percentile and infants with WFA >85th percentile. CONCLUSIONS Our findings suggest that IGF2 plasticity may be mechanistically important in early childhood overweight or obese status. If confirmed in larger studies, these findings suggest aberrant DNA methylation at sequences regulating imprinted genes may be useful identifiers of children at risk for the development of early obesity.
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Affiliation(s)
- Ellen Perkins
- Department of Community and Family Medicine, Duke University, Durham, NC 27710, USA
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Hoyo C, Fortner K, Murtha AP, Schildkraut JM, Soubry A, Demark-Wahnefried W, Jirtle RL, Kurtzberg J, Forman MR, Overcash F, Huang Z, Murphy SK. Association of cord blood methylation fractions at imprinted insulin-like growth factor 2 (IGF2), plasma IGF2, and birth weight. Cancer Causes Control 2012; 23:635-45. [PMID: 22392079 PMCID: PMC3313040 DOI: 10.1007/s10552-012-9932-y] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2011] [Accepted: 02/16/2012] [Indexed: 12/19/2022]
Abstract
Purpose Altered methylation at Insulin-like Growth Factor 2 (IGF2) regulatory regions has previously been associated with obesity, and several malignancies including colon, esophageal, and prostate adenocarcinomas, presumably via changes in expression and/or loss of imprinting, but the functional significance of these DNA methylation marks have not been demonstrated in humans. We examined associations among DNA methylation at IGF2 differentially methylated regions (DMRs), circulating IGF2 protein concentrations in umbilical cord blood (UCB) and birth weight in newborns. Methods Questionnaire data were obtained from 300 pregnant women recruited between 2005 and 2009. UCB DNA methylation was measured by bisulfite pyrosequencing. UCB plasma concentrations of soluble IGF2 were measured by ELISA assays. Generalized linear regression models were used to examine the relationship between DMR methylation and IGF2 levels. Results Lower IGF2 DMR methylation was associated with elevated plasma IGF2 protein concentrations (β = −9.87, p < 0.01); an association that was stronger in infants born to obese women (pre-pregnancy BMI > 30 kg/m2, β = −20.21, p < 0.0001). Elevated IGF2 concentrations were associated with higher birth weight (p < 0.0001) after adjusting for maternal race/ethnicity, pre-pregnancy BMI, cigarette smoking, gestational diabetes, and infant sex. These patterns of association were not apparent at the H19 DMR. Conclusion Our data suggest that variation in IGF2 DMR methylation is an important mechanism by which circulating IGF2 concentrations, a putative risk factor for obesity and cancers of the colon, esophagus, and prostate, are modulated; associations that may depend on pre-pregnancy obesity.
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Affiliation(s)
- Cathrine Hoyo
- Department of Community and Family Medicine, Duke University Medical Center, 2200 West Main Street, Ste. 600, Durham, NC 27705, USA.
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Doyle SL, Donohoe CL, Finn SP, Howard JM, Lithander FE, Reynolds JV, Pidgeon GP, Lysaght J. IGF-1 and its receptor in esophageal cancer: association with adenocarcinoma and visceral obesity. Am J Gastroenterol 2012; 107:196-204. [PMID: 22146489 DOI: 10.1038/ajg.2011.417] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
OBJECTIVES The insulin-like growth factor (IGF) pathway and visceral obesity have been independently linked with esophageal cancer. This study aimed to delineate the differential and interlinked role of visceral obesity and the IGF-1 system in esophageal adenocarcinoma and esophageal squamous-cell carcinoma (SCC). METHODS IGF-1 receptor (IGF-1R) mRNA and protein were examined in esophageal SCC (KYSE 410, OE21) and esophageal adenocarcinoma (OE19, OE33) cell lines by western blotting. Tumor cell proliferation in response to IGF-1 was assessed by bromodeoxyuridine incorporation assay. In esophageal tumor sections, expression of IGF-1R and CD68(+) cell numbers were assessed by immunohistochemistry. IGF-1 was measured in serum from esophageal cancer patients, Barrett's esophagus patients, and healthy controls by enzyme-linked immunosorbent assay. RESULTS Higher IGF-1R protein expressions were observed in SCC cells compared with esophageal adenocarcinoma cells however only adenocarcinoma cell lines significantly increased proliferation in response to IGF-1 (P<0.01). Serum IGF-1 levels were highest in esophageal adenocarcinoma patients (P<0.01) and higher in viscerally obese vs. nonobese (P<0.05) patients. In resected esophageal cancer, increased expression of IGF-1R was observed in the tumor and invasive edge compared with tumor-associated stroma (P<0.05), which coincided with increased CD68(+) cells in stromal tissue surrounding invasive tumor edge (P<0.01). CONCLUSIONS This novel study examined the differential role of the IGF system in esophageal adenocarcinoma and SCC, and its association with visceral obesity. These results indicate that the IGF-1 axis has a key role in malignant progression of esophageal cancer, and represents a plausible mechanism through which visceral obesity impacts on esophageal adenocarcinoma risk and tumor biology.
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Affiliation(s)
- Suzanne L Doyle
- Department of Surgery, Institute of Molecular Medicine, Trinity Centre for Health Sciences, St James's Hospital and University of Dublin, Trinity College, Dublin, Ireland
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Pamuklar ZN, Chen J, Muehlbauer M, Spagnoli A, Torquati A. Necdin-E2F4 interaction provides insulin-sensitizing effect after weight loss induced by gastric bypass surgery. Surg Obes Relat Dis 2011; 9:94-9. [PMID: 22138333 DOI: 10.1016/j.soard.2011.10.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2011] [Revised: 10/25/2011] [Accepted: 10/28/2011] [Indexed: 01/03/2023]
Abstract
BACKGROUND The insulin-like growth factor-1 (IGF-1) signaling pathway promotes adipocyte differentiation and, therefore, insulin sensitivity by suppression of necdin expression, which represses peroxisome proliferator-activated receptor-gamma promoter activity by interaction with E2F4 in mouse adipocytes. The aim of the present study was to test the hypothesis that this pathway represents one of the mechanisms by which Roux-en-Y gastric bypass surgery (RYGB) induces resolution of insulin resistance. METHODS Clinical samples were collected and the key biomarkers measured to test the hypothesis that the IGF-1 pathway represents 1 of the mechanisms by which RYGB induces resolution of insulin resistance in obese individuals. RESULTS Free IGF-1 levels were significantly greater in the post-RYGB patients than in the pre-RYGB obese patients (2.55 ± 1.54 versus 1.32 ± .65 μg/L, P = .03) and similar to that in normal weight controls (2.54 ± 1.27 μg/L). Necdin and E2F4 gene expression in the adipose tissue was significantly downregulated after RYGB compared with obese and were similar to the levels observed in the controls. In mature human adipocytes cultured in vitro, treatment with des-IGF-1 induced downregulation of necdin and E2F4 gene expression in a dose-dependent manner (P = .01). CONCLUSION After RYGB, the insulin/IGF-1 signaling pathway is activated and could account for the observed decrease in the expression of necdin, which represses peroxisome proliferator-activated receptor-gamma promoter activity by interaction with E2F4. This could represent one of the mechanisms that induce resolution of insulin resistance after RYGB.
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Affiliation(s)
- Zehra N Pamuklar
- Department of Surgery, Duke University School of Medicine, Durham, North Carolina 27704, USA
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Sobaleva S, El-Toukhy T. The impact of raised BMI on the outcome of assisted reproduction: Current concepts. J OBSTET GYNAECOL 2011; 31:561-5. [DOI: 10.3109/01443615.2011.602138] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Effect of body mass index on IVF treatment outcome: an updated systematic review and meta-analysis. Reprod Biomed Online 2011; 23:421-39. [DOI: 10.1016/j.rbmo.2011.06.018] [Citation(s) in RCA: 262] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2011] [Revised: 06/27/2011] [Accepted: 06/28/2011] [Indexed: 11/20/2022]
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Bogazzi F, Rossi G, Lombardi M, Tomisti L, Sardella C, Manetti L, Curzio O, Marcocci C, Grasso L, Gasperi M, Martino E. Vitamin D status may contribute to serum insulin-like growth factor I concentrations in healthy subjects. J Endocrinol Invest 2011; 34:e200-3. [PMID: 20671418 DOI: 10.3275/7228] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
OBJECTIVE The aim of the study was to evaluate whether vitamin D [25-(OH) D3] status affects serum IGFI concentrations in healthy subjects. DESIGN AND PATIENTS Two hundred and forty-one consecutive healthy subjects were included in the present study. MEASUREMENTS Serum IGF-I and 25-(OH) D3 concentrations. RESULTS As expected, serum IGF-I concentrations progressively decreased with age (r=-0.55, p<0.0001); on the contrary, gender was not related to serum IGF-I levels. A positive relationship was identified between serum 25-(OH) D3 and IGF-I concentrations (r=0.33, p<0.0001); the 25-(OH) D3-dependent changes of serum IGF-I concentrations were observed also when subjects were divided on the basis of vitamin D deficiency; in fact, those with severe 25-(OH) D3 deficiency (<20 ng/ml) had lower (185 ± 83 μg/l) IGF-I values than those with mild-to absent 25-(OH) D3 deficit (225 ± 83 μg/l, p=0.0004). CONCLUSIONS 25-(OH) D3 status may contribute to determine serum IGF-I levels in healthy population.
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Affiliation(s)
- F Bogazzi
- Department of Endocrinology and Metabolism, University of Pisa, Via Paradisa 2, 56124 Pisa, Italy
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Sexton KR, Franzini L, Day RS, Brewster A, Vernon SW, Bondy ML. A review of body size and breast cancer risk in Hispanic and African American women. Cancer 2011; 117:5271-81. [PMID: 21598244 DOI: 10.1002/cncr.26217] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2011] [Revised: 03/21/2011] [Accepted: 04/01/2011] [Indexed: 01/14/2023]
Abstract
Obesity is an epidemic in the United States, especially among Hispanics and African Americans. Studies of obesity and breast cancer risk have been conducted primarily in non-Hispanic whites. There have been few studies of the association between body mass index (BMI) or weight gain and the risk of breast cancer in minorities, and the results have been inconsistent. Because most studies are conducted primarily in non-Hispanic whites, the etiology of breast cancer in minorities is not well understood. The authors of the current report reviewed the literature on the association between obesity, weight, and weight gain and breast cancer in minorities using a combination of the Medical Subject Heading (MeSH) terms "obesity," "body mass index," "weight," "weight gain," "Hispanic," and "African American." Only publications in English and with both risk estimates and 95% confidence intervals were considered. Forty-five studies of body size and breast cancer risk in non-Hispanic whites were identified. After an exhaustive search of the literature, only 3 studies of body size and breast cancer were conducted in Hispanic women were identified, and only 8 such studies in African American women were identified. The results were inconsistent in both race/ethnicity groups, with studies reporting positive, inverse, and null results. Thus, as obesity rates among Hispanics and African Americans continue to rise, there is an urgent need to identify the roles that both obesity and adult weight gain play in the development of breast cancer in these minorities. Additional studies are needed to provide more understanding of the etiology of this disease and to explain some of the disparities in incidence and mortality.
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Affiliation(s)
- Krystal R Sexton
- Division of Epidemiology, Human Genetics, and Environmental Sciences, University of Texas School of Public Health, Houston, Texas, USA.
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Lipworth L, Tarone RE, McLaughlin JK. Renal cell cancer among African Americans: an epidemiologic review. BMC Cancer 2011; 11:133. [PMID: 21486465 PMCID: PMC3087713 DOI: 10.1186/1471-2407-11-133] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2010] [Accepted: 04/12/2011] [Indexed: 02/08/2023] Open
Abstract
Incidence rates for renal cell cancer, which accounts for 85% of kidney cancers, have been rising more rapidly among blacks than whites, almost entirely accounted for by an excess of localized disease. This excess dates back to the 1970s, despite less access among blacks to imaging procedures in the past. In contrast, mortality rates for this cancer have been virtually identical among blacks and whites since the early 1990s, despite the fact that nephrectomy rates, regardless of stage, are lower among blacks than among whites. These observations suggest that renal cell cancer may be a less aggressive tumor in blacks. We have reviewed the epidemiology of renal cell cancer, with emphasis on factors which may potentially play a role in the observed differences in incidence and mortality patterns of renal cell cancer among blacks and whites. To date, the factors most consistently, albeit modestly, associated with increased renal cell cancer risk in epidemiologic studies among whites--obesity, hypertension, cigarette smoking--likely account for less than half of these cancers, and there is virtually no epidemiologic evidence in the literature pertaining to their association with renal cell cancer among blacks. There is a long overdue need for detailed etiologic cohort and case-control studies of renal cell cancer among blacks, as they now represent the population at highest risk in the United States. In particular, investigation of the influence on renal cell cancer development of hypertension and chronic kidney disease, both of which occur substantially more frequently among blacks, is warranted, as well as investigations into the biology and natural history of this cancer among blacks.
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Affiliation(s)
- Loren Lipworth
- International Epidemiology Institute, 1455 Research Boulevard, Suite 550, Rockville, MD 20850, USA.
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