Purpose: To investigate the effects of Tribulus terrestris(TT) extracts on muscle mass, muscle damage, and anaerobic performances of trained male boxers and its mechanisms: roles of plasma androgen, insulin growth fac...Purpose: To investigate the effects of Tribulus terrestris(TT) extracts on muscle mass, muscle damage, and anaerobic performances of trained male boxers and its mechanisms: roles of plasma androgen, insulin growth factor 1(IGF-1), and IGF-1 binding protein-3(IGFBP-3).Methods: Fifteen male boxers were divided into exercise group(E, n = 7) and exercise plus TT group(E + TT, n = 8). The 2 groups both undertook3-week high-intensity and 3-week high-volume trainings separated by a 4-week rest. TT extracts(1250 mg/day) were orally administered by boxers in E + TT group. TT extract compositions were detected by UHPLC–Q-TOF/MS. Before and at the end of the 2 trainings, muscle mass, anaerobic performance, and blood indicators were explored.Results: Compared with E group, decreases of plasma CK(1591.5 ± 909.6 U/L vs. 2719.9 ± 832.5 U/L) and IGFBP-3(3075.5 ± 1072.5 ng/m L vs. 3950.8 ± 479.3 ng/m L) as well as increases of mean power(MP, 459.4 ± 122.3 W vs. 434.6 ± 69.5 W) and MP/body weight(MP/BW, 7.5 ± 0.9 W/kg vs. 7.1 ± 1.1 W/kg) were detected in E + TT group after a high-intensity training. For high-volume training, reduction of IGFBP-3(2946.4 ± 974.1 ng/m L vs. 3632.7 ± 470.1 ng/m L) and increases of MP(508.7 ± 103.2 W vs. 477.8 ± 49.9 W) and MP/BW(8.2 ± 0.3 W/kg vs.7.5 ± 0.9 W/kg) were detected in E + TT group, compared with E group. Muscle mass, blood levels of testosterone, dihydrotestosterone(DHT),and IGF-1 were not signifiantly changed between the 2 groups.Conclusion: Taking 1250 mg capsules containing TT extracts did not change muscle mass and plasma levels of testosterone, DHT, and IGF-1 but significantly alleviated muscle damage and promoted anaerobic performance of trained male boxers, which may be related to the decrease of plasma IGFBP-3 rather than androgen in plasma.展开更多
Aim:Prostate cancer(PCa)is the second most prevalent male cancer worldwide and designated the sixth most frequent male cancer in Arab countries.Although prostate specific antigen(PSA)has become the best and most valua...Aim:Prostate cancer(PCa)is the second most prevalent male cancer worldwide and designated the sixth most frequent male cancer in Arab countries.Although prostate specific antigen(PSA)has become the best and most valuable biomarker for screening of PCa,elevated levels of PSA can reflect the presence of malignant cells but can overlap with benign prostatic diseases.There is a necessity to develop and improve current tools for early detection and diagnosis of PCa.This study was done to evaluate the validation of serum insulin-like growth factor-1(IGF-1),IGF binding protein-3(IGFBP-3),chromogranin A(CgA)and combination with PSA in treatment of benign prostatic hyperplasia(BPH)and PCa patients.Methods:The study included 72 patients with PCa,70 BPH patients and 56 healthy male subjects of matched age.Full history and clinical data were recorded for all subjects.Results:Serum PSA attained sensitivity of 84%at 82%specificity with an accuracy of 83%,although IGF-1,IGFBP-3 and CgA did not recognize PCa patients.Conclusion:Combinations of IGF-1 and IGFBP-3 biomarkers with PSA were effectively differentiated between PCa and control groups as well as improving the overall value of sensitivity,specificity and diagnostic accuracy of PCa to 85%and 86%for IGF-1/PSA and IGFP-3/PSA respectively.展开更多
AIM: To investigate the effect of microR NA on insulinlike growth factor binding protein-3(IGFBP-3) and hence on insulin-like growth factor-Ⅱ(IGF-Ⅱ) bioavailability in hepatocellular carcinoma(HCC).METHODS: Bioinfor...AIM: To investigate the effect of microR NA on insulinlike growth factor binding protein-3(IGFBP-3) and hence on insulin-like growth factor-Ⅱ(IGF-Ⅱ) bioavailability in hepatocellular carcinoma(HCC).METHODS: Bioinformatic analysis was performed using microrna.org, DIANA lab and Segal lab softwares. Total RNA was extracted from 23 HCC and 10 healthy liver tissues using mir Vana mi RNA Isolation Kit. microR NA-17-5p(miR-17-5p) expression was mimicked and antagonized in Hu H-7 cell lines using Hi Per Fect Transfection Reagent, then total RNA was extracted using Biozol reagent then reverse transcribed into cD NA followed by quantification of mi R-17-5p and IGFBP-3 expression using Taq Man real-time quantitative PCR. Luciferase reporter assay was performed to validate the binding of miR-17-5p to the 3'UTR of IGFBP-3. Free IGF-Ⅱ protein was measured in transfected Hu H-7 cells using IGF-Ⅱ ELISA kit. RESULTS: Bioinformatic analysis revealed IGFBP-3 as a potential target for miR-17-5p. Screening of miR-17-5p and IGFBP-3 revealed a moderate negative correlation in HCC patients, where mi R-17-5p was extensively underexpressed in HCC tissues(P = 0.0012), while IGFBP-3 showed significant upregulation in the same set of patients(P = 0.0041) compared to healthy donors. Forcing mi R-17-5p expression in Hu H-7 cell lines showed a significant downregulation of IGFBP-3 mR NA expression(P = 0.0267) and a significant increase in free IGF-Ⅱ protein(P = 0.0339) compared to mock untransfected cells using unpaired t-test. Luciferase assay validated IGFBP-3 as a direct target of mi R-17-5p; luciferase activity was inhibited by 27.5% in cells co-transfected with miR-17-5p mimics and the construct harboring the wild-type binding region 2 of IGFBP-3 compared to cells transfected with this construct alone(P = 0.0474).CONCLUSION: These data suggest that regulating IGF-Ⅱ bioavailability and hence HCC progression can be achieved through targeting IGFBP-3 via manipulating the expression of miR NAs.展开更多
BACKGROUND： Recent studies have found that insulin-like growth factors （IGFs） and insulin-like growth factor binding protein-3 （IGFBP-3） have stronger neurotrophic and neuroprotective effects. But whether their l...BACKGROUND： Recent studies have found that insulin-like growth factors （IGFs） and insulin-like growth factor binding protein-3 （IGFBP-3） have stronger neurotrophic and neuroprotective effects. But whether their levels in cerebrospinal fluid could be used as an auxiliary indicator in differentially diagnosing tuberculous meningitis and viral encephalitis is not yet clear. OBJECTIVE： To explore the changes of insulin-like growth factor-Ⅱ （IGF-Ⅱ ） and IGFBP-3 in cerebrospinal fluid （CSF） of children with tuberculous meningitis and the significance of the changes. DESIGN： A non-randomized concurrent controlled study. SETTING： Department of Pediatric Internal Medicine, the First Affiliated Hospital of Xinxiang Medical College. PARTICIPANTS： Thirty children with tuberculous meningitis （14 males and 16 females） were selected from the Department of Pediatric Internal Medicine, the First Affiliated Hospital of Xinxiang Medical College from January 2005 to December 2006. Tuberculous meningitis was diagnosed according to their clinical manifestations, the history of close contact with tuberculosis, typical cerebrospinal fluid changes of tuberculous meningitis, positive tuberculosis antibody and effective antituberculosis treatment. There were 30 children （13 males and 17 females） with viral encephalitis, and viral encephalitis was diagnosed according to epidemiological history, clinical manifestations, conventional and biochemical changes of cerebrospinal fluid, and negative bacteriology judgment. Meanwhile, 30 children （13 males and 17 females） without infectious and central nervous system disease were selected as the control group. Informed consent was obtained from the parents of all the enrolled children. METHODS： ①The lumbar puncture operation was implemented immediately to obtain cerebrospinal fluid （3 mL）. The contents of IGF-Ⅱ and IGFBP-3 were detected with immunoradiometric assay. The concentrations of glucose and protein in cerebrospinal fluid were determined with a dry-chemical method. The number of white blood cells was counted by Fushi Method. ②The Pearson correlation analysis was used to analyze the correlation of the contents of IGF-Ⅱ and IGFBP-3 in cerebrospinal fluid with the leucocyte counting and the concentrations of glucose and protein in cerebrospinal fluid. MAIN OUTCOME MEASURES： The contents of IGF- Ⅱ and IGFBP-3 in cerebrospinal fluid, and their correlation with the leucocyte counting and the concentrations of glucose and protein in cerebrospinal fluid. RESULTS： ①Contents of IGF-Ⅱ and IGFBP-3 in cerebrospinal fluid： The contents of IGF-Ⅱ and IGFBP-3 in cerebrospinal fluid in the tuberculous meningitis group were significantly higher than those in the encephalitis virus group and control group （P 〈 0.05）. There was no significant difference in the contents of IGF- Ⅱ and IGFBP-3 in cerebrospinal fluid between the viral encephalitis group and control group （P 〉 0.05）. ②Correlation： The IGF- Ⅱ and IGFBP-3 contents in cerebrospinal fluid were positively correlated with the protein concentration in cerebrospinal fluid （r =0.821, 0.855, P 〈 0.01）, but negatively with the glucose （r =0.742, - 0.605, P 〈 0.01）. CONCLUSION- ①IGFs and IGVBPs are involved in the pathophysiological process of tuberculous meningitis, as well as the glucose and protein metabolism in cerebrospinal fluid. ②The IGF-Ⅱ and IGFBP-3 contents in cerebrospinal fluid can be used as the auxiliary indicators to differentially diagnose tuberculous meningitis and viral enceohalitis.展开更多
目的探讨孕妇血清胰岛素样生长因子1(insulin like growth factor 1,IGF-1)、IGF-2、IGF结合蛋白3(IGF binding protein 3,IGFBP-3)与正常胎儿生长的关系。方法选择2010年1月至2011年5月于上海市浦东新区人民医院产前检查并分娩正常体...目的探讨孕妇血清胰岛素样生长因子1(insulin like growth factor 1,IGF-1)、IGF-2、IGF结合蛋白3(IGF binding protein 3,IGFBP-3)与正常胎儿生长的关系。方法选择2010年1月至2011年5月于上海市浦东新区人民医院产前检查并分娩正常体重儿的初产妇66例,分为妊娠16～18周、妊娠26～28周、妊娠37～40周3个阶段进行纵向观察,放射免疫法测定孕妇各阶段血清中IGF-1、IGF-2、IGFBP-3水平并进行对比分析。结果孕期母血IGF-1水平随着孕周增加明显上升,其中IGF-1水平在妊娠37～40周高于妊娠26～28周,妊娠26～28周高于妊娠16～18周,差异均有显著统计学意义(P均<0.01)。孕期母血IGF-2水平随孕周增加无明显改变,妊娠3阶段差异无统计学意义(P>0.05)。母血IGFBP-3水平妊娠37～40周高于妊娠26～28周及妊娠16～18周期,差异有统计学意义(P<0.05),而妊娠26～28周与妊娠16～18周无显著差异。妊娠16～18周、26～28周和37～40周3阶段母血IGF-1、IGF-2、IGFBP-3水平与正常新生儿出生体重无显著相关性。结论孕妇血清IGF-1、IGFBP-3水平与正常胎儿生长密切相关,IGF-1可作为临床评价不同阶段正常胎儿生长的指标,而IGFBP-3更多地反映了妊娠中晚期正常胎儿的生长。展开更多
基金supported by grants from the National Natural Science Foundation of China (No. 31271274)the Graduate Education Innovation Projects (No. yjscx2014035)
文摘Purpose: To investigate the effects of Tribulus terrestris(TT) extracts on muscle mass, muscle damage, and anaerobic performances of trained male boxers and its mechanisms: roles of plasma androgen, insulin growth factor 1(IGF-1), and IGF-1 binding protein-3(IGFBP-3).Methods: Fifteen male boxers were divided into exercise group(E, n = 7) and exercise plus TT group(E + TT, n = 8). The 2 groups both undertook3-week high-intensity and 3-week high-volume trainings separated by a 4-week rest. TT extracts(1250 mg/day) were orally administered by boxers in E + TT group. TT extract compositions were detected by UHPLC–Q-TOF/MS. Before and at the end of the 2 trainings, muscle mass, anaerobic performance, and blood indicators were explored.Results: Compared with E group, decreases of plasma CK(1591.5 ± 909.6 U/L vs. 2719.9 ± 832.5 U/L) and IGFBP-3(3075.5 ± 1072.5 ng/m L vs. 3950.8 ± 479.3 ng/m L) as well as increases of mean power(MP, 459.4 ± 122.3 W vs. 434.6 ± 69.5 W) and MP/body weight(MP/BW, 7.5 ± 0.9 W/kg vs. 7.1 ± 1.1 W/kg) were detected in E + TT group after a high-intensity training. For high-volume training, reduction of IGFBP-3(2946.4 ± 974.1 ng/m L vs. 3632.7 ± 470.1 ng/m L) and increases of MP(508.7 ± 103.2 W vs. 477.8 ± 49.9 W) and MP/BW(8.2 ± 0.3 W/kg vs.7.5 ± 0.9 W/kg) were detected in E + TT group, compared with E group. Muscle mass, blood levels of testosterone, dihydrotestosterone(DHT),and IGF-1 were not signifiantly changed between the 2 groups.Conclusion: Taking 1250 mg capsules containing TT extracts did not change muscle mass and plasma levels of testosterone, DHT, and IGF-1 but significantly alleviated muscle damage and promoted anaerobic performance of trained male boxers, which may be related to the decrease of plasma IGFBP-3 rather than androgen in plasma.
文摘Aim:Prostate cancer(PCa)is the second most prevalent male cancer worldwide and designated the sixth most frequent male cancer in Arab countries.Although prostate specific antigen(PSA)has become the best and most valuable biomarker for screening of PCa,elevated levels of PSA can reflect the presence of malignant cells but can overlap with benign prostatic diseases.There is a necessity to develop and improve current tools for early detection and diagnosis of PCa.This study was done to evaluate the validation of serum insulin-like growth factor-1(IGF-1),IGF binding protein-3(IGFBP-3),chromogranin A(CgA)and combination with PSA in treatment of benign prostatic hyperplasia(BPH)and PCa patients.Methods:The study included 72 patients with PCa,70 BPH patients and 56 healthy male subjects of matched age.Full history and clinical data were recorded for all subjects.Results:Serum PSA attained sensitivity of 84%at 82%specificity with an accuracy of 83%,although IGF-1,IGFBP-3 and CgA did not recognize PCa patients.Conclusion:Combinations of IGF-1 and IGFBP-3 biomarkers with PSA were effectively differentiated between PCa and control groups as well as improving the overall value of sensitivity,specificity and diagnostic accuracy of PCa to 85%and 86%for IGF-1/PSA and IGFP-3/PSA respectively.
文摘AIM: To investigate the effect of microR NA on insulinlike growth factor binding protein-3(IGFBP-3) and hence on insulin-like growth factor-Ⅱ(IGF-Ⅱ) bioavailability in hepatocellular carcinoma(HCC).METHODS: Bioinformatic analysis was performed using microrna.org, DIANA lab and Segal lab softwares. Total RNA was extracted from 23 HCC and 10 healthy liver tissues using mir Vana mi RNA Isolation Kit. microR NA-17-5p(miR-17-5p) expression was mimicked and antagonized in Hu H-7 cell lines using Hi Per Fect Transfection Reagent, then total RNA was extracted using Biozol reagent then reverse transcribed into cD NA followed by quantification of mi R-17-5p and IGFBP-3 expression using Taq Man real-time quantitative PCR. Luciferase reporter assay was performed to validate the binding of miR-17-5p to the 3'UTR of IGFBP-3. Free IGF-Ⅱ protein was measured in transfected Hu H-7 cells using IGF-Ⅱ ELISA kit. RESULTS: Bioinformatic analysis revealed IGFBP-3 as a potential target for miR-17-5p. Screening of miR-17-5p and IGFBP-3 revealed a moderate negative correlation in HCC patients, where mi R-17-5p was extensively underexpressed in HCC tissues(P = 0.0012), while IGFBP-3 showed significant upregulation in the same set of patients(P = 0.0041) compared to healthy donors. Forcing mi R-17-5p expression in Hu H-7 cell lines showed a significant downregulation of IGFBP-3 mR NA expression(P = 0.0267) and a significant increase in free IGF-Ⅱ protein(P = 0.0339) compared to mock untransfected cells using unpaired t-test. Luciferase assay validated IGFBP-3 as a direct target of mi R-17-5p; luciferase activity was inhibited by 27.5% in cells co-transfected with miR-17-5p mimics and the construct harboring the wild-type binding region 2 of IGFBP-3 compared to cells transfected with this construct alone(P = 0.0474).CONCLUSION: These data suggest that regulating IGF-Ⅱ bioavailability and hence HCC progression can be achieved through targeting IGFBP-3 via manipulating the expression of miR NAs.
基金a grant from the New Century Talents Supporting Scheme in Universities of Henan Province
文摘BACKGROUND： Recent studies have found that insulin-like growth factors （IGFs） and insulin-like growth factor binding protein-3 （IGFBP-3） have stronger neurotrophic and neuroprotective effects. But whether their levels in cerebrospinal fluid could be used as an auxiliary indicator in differentially diagnosing tuberculous meningitis and viral encephalitis is not yet clear. OBJECTIVE： To explore the changes of insulin-like growth factor-Ⅱ （IGF-Ⅱ ） and IGFBP-3 in cerebrospinal fluid （CSF） of children with tuberculous meningitis and the significance of the changes. DESIGN： A non-randomized concurrent controlled study. SETTING： Department of Pediatric Internal Medicine, the First Affiliated Hospital of Xinxiang Medical College. PARTICIPANTS： Thirty children with tuberculous meningitis （14 males and 16 females） were selected from the Department of Pediatric Internal Medicine, the First Affiliated Hospital of Xinxiang Medical College from January 2005 to December 2006. Tuberculous meningitis was diagnosed according to their clinical manifestations, the history of close contact with tuberculosis, typical cerebrospinal fluid changes of tuberculous meningitis, positive tuberculosis antibody and effective antituberculosis treatment. There were 30 children （13 males and 17 females） with viral encephalitis, and viral encephalitis was diagnosed according to epidemiological history, clinical manifestations, conventional and biochemical changes of cerebrospinal fluid, and negative bacteriology judgment. Meanwhile, 30 children （13 males and 17 females） without infectious and central nervous system disease were selected as the control group. Informed consent was obtained from the parents of all the enrolled children. METHODS： ①The lumbar puncture operation was implemented immediately to obtain cerebrospinal fluid （3 mL）. The contents of IGF-Ⅱ and IGFBP-3 were detected with immunoradiometric assay. The concentrations of glucose and protein in cerebrospinal fluid were determined with a dry-chemical method. The number of white blood cells was counted by Fushi Method. ②The Pearson correlation analysis was used to analyze the correlation of the contents of IGF-Ⅱ and IGFBP-3 in cerebrospinal fluid with the leucocyte counting and the concentrations of glucose and protein in cerebrospinal fluid. MAIN OUTCOME MEASURES： The contents of IGF- Ⅱ and IGFBP-3 in cerebrospinal fluid, and their correlation with the leucocyte counting and the concentrations of glucose and protein in cerebrospinal fluid. RESULTS： ①Contents of IGF-Ⅱ and IGFBP-3 in cerebrospinal fluid： The contents of IGF-Ⅱ and IGFBP-3 in cerebrospinal fluid in the tuberculous meningitis group were significantly higher than those in the encephalitis virus group and control group （P 〈 0.05）. There was no significant difference in the contents of IGF- Ⅱ and IGFBP-3 in cerebrospinal fluid between the viral encephalitis group and control group （P 〉 0.05）. ②Correlation： The IGF- Ⅱ and IGFBP-3 contents in cerebrospinal fluid were positively correlated with the protein concentration in cerebrospinal fluid （r =0.821, 0.855, P 〈 0.01）, but negatively with the glucose （r =0.742, - 0.605, P 〈 0.01）. CONCLUSION- ①IGFs and IGVBPs are involved in the pathophysiological process of tuberculous meningitis, as well as the glucose and protein metabolism in cerebrospinal fluid. ②The IGF-Ⅱ and IGFBP-3 contents in cerebrospinal fluid can be used as the auxiliary indicators to differentially diagnose tuberculous meningitis and viral enceohalitis.
文摘目的探讨孕妇血清胰岛素样生长因子1(insulin like growth factor 1,IGF-1)、IGF-2、IGF结合蛋白3(IGF binding protein 3,IGFBP-3)与正常胎儿生长的关系。方法选择2010年1月至2011年5月于上海市浦东新区人民医院产前检查并分娩正常体重儿的初产妇66例,分为妊娠16～18周、妊娠26～28周、妊娠37～40周3个阶段进行纵向观察,放射免疫法测定孕妇各阶段血清中IGF-1、IGF-2、IGFBP-3水平并进行对比分析。结果孕期母血IGF-1水平随着孕周增加明显上升,其中IGF-1水平在妊娠37～40周高于妊娠26～28周,妊娠26～28周高于妊娠16～18周,差异均有显著统计学意义(P均<0.01)。孕期母血IGF-2水平随孕周增加无明显改变,妊娠3阶段差异无统计学意义(P>0.05)。母血IGFBP-3水平妊娠37～40周高于妊娠26～28周及妊娠16～18周期,差异有统计学意义(P<0.05),而妊娠26～28周与妊娠16～18周无显著差异。妊娠16～18周、26～28周和37～40周3阶段母血IGF-1、IGF-2、IGFBP-3水平与正常新生儿出生体重无显著相关性。结论孕妇血清IGF-1、IGFBP-3水平与正常胎儿生长密切相关,IGF-1可作为临床评价不同阶段正常胎儿生长的指标,而IGFBP-3更多地反映了妊娠中晚期正常胎儿的生长。
