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Koh KK, Wang YX, Chang ZY, Kaur H, Soh RYH, Kasunuran-Cruz MT, Soong JTY. Abdominal Swelling and Distension: An Unusual Cause of 'Ascites'. Am J Med 2021; 134:1368-1370. [PMID: 34197783 DOI: 10.1016/j.amjmed.2021.05.018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Revised: 05/21/2021] [Accepted: 05/25/2021] [Indexed: 10/21/2022]
Affiliation(s)
- Kylynn K Koh
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Y X Wang
- Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Z Y Chang
- National University Hospital, Singapore
| | - H Kaur
- National University Hospital, Singapore
| | - R Y H Soh
- National University Hospital, Singapore
| | | | - John T Y Soong
- National University Hospital, Singapore; Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Imperial College London, United Kingdom.
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2
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Chou S, Chang ZY, Zhao GD, Song DD, Zhang X, Hu MG, Liu R. [Robotic hilar cholangiocarcinoma radical resection compared with laparotomy in prognosis]. Zhonghua Wai Ke Za Zhi 2020; 58:230-234. [PMID: 32187928 DOI: 10.3760/cma.j.issn.0529-5815.2020.03.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the long term and short term outcomes between robotic and open surgery for hilar cholangiocarcinoma radical resection. Methods: This is a single-center and retrospective case-control study. Patients underwent hilar cholangiocarcinoma radical resection between January 2016 and December 2016 at Department of Hepatobiliary Surgery of the General Hospital of the Chinese People's Liberation Army were included. Safety, effectiveness and long-term prognosis of tumors were evaluated. Patients were divided into robotic hilar cholangiocarcinoma radical surgery group (robotic group, n=16) and open hepatic hilar cholangiocarcinoma radical surgery group (open group, n=31) . All cases were confirmed by pathology histological. Age, gender, histology, resection margin status, extent of surgical resection, disease-free survival (DFS) , and overall survival (OS) were retrospectively collected and analyzed.In the follow-up cohort, the primary outcome was patient death and the secondary outcome was tumor recurrence. Continuous variables were expressed as means and medians and were compared using the Student t test if normally distributed or Wilcoxon-Mann-Whitney test for nonparametric variables. Discrete variables were expressed as frequency and percentages and χ(2) or Fisher exact test, when appropriate, were used for comparisons. Kaplan-Meier curves were used to calculate the probability of survival and comparisons were performed using log-rank test. Results: In this study, compared with the open group, the robotic group had a longer operation time ( (338±71) minutes vs. (256±56) minutes, t=4.251, P=0.001) , but the intraoperative blood loss was less (100 ml vs. 200 ml, Z=121.50, P=0.040) , the gastric tube removal time was earlier (3 days vs. 4 days, Z=136.0, P=0.011) , and the postoperative hospital stay was shorter (9 days vs. 12 days, Z=144.50, P=0.040) , and the difference was statistically significant.There was no significant difference in the blood transfusion rate, R0 resection rate, and tumor size between the two groups.The recurrence rates in the robotic group and open surgery were 53.3% and 67.0%, respectively (χ(2)=1.04, P=0.307) .The median survival time of the robotic group and the open group was 22.0 months and 25.0 months. There was no significant difference in the overall survival rate between the two groups (P>0.05) . Conclusion: Compared with laparotomy, robotic HCC radical resection could have an equivalence or non-inferiority approach with acceptable long-term outcome.
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Affiliation(s)
- S Chou
- Second Department of Hepatobiliary Surgery, the First Medical Center of People's Liberation Army General Hospital, Beijing 100853, China
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Ma YS, Wang XF, Zhang YJ, Luo P, Long HD, Li L, Yang HQ, Xie RT, Jia CY, Lu GX, Chang ZY, Zhang JJ, Xue SB, Lv ZW, Yu F, Xia Q, Fu D. Inhibition of USP14 Deubiquitinating Activity as a Potential Therapy for Tumors with p53 Deficiency. Mol Ther Oncolytics 2020; 16:147-157. [PMID: 32055678 PMCID: PMC7005481 DOI: 10.1016/j.omto.2019.12.013] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2019] [Accepted: 12/23/2019] [Indexed: 01/17/2023]
Abstract
Functional elimination of p53 is a common feature of a large percentage of human malignancies. Here, we report the development of a pharmacological strategy aimed at restoring p53 function and its use for targeted therapy in p53-deficient mice. Specific inhibition of deubiquitinases ubiquitin-specific peptidase 14 (USP14) resulted in durable tumor regressions of autochthonous lymphomas and sarcomas in p53-deficient mice without affecting normal tissues, and therapeutic response was correlated with an increase in the ubiquitination of constitutive photomorphogenesis 9 (COP9) signalosome subunit 5 (COPS5), a key negative regulatory effector for p53. Inhibition of USP14 resulted in durable tumor regression through COPS5 deubiquitilation and a p53-dependent and -independent regulation mechanism by USP14. This series highlights the utility of proteasome deubiquitinating activity inhibition as a novel treatment paradigm for p53-deficient cancers. In addition, it provides preliminary evidence that inhibition of USP14 resulted in durable tumor regression through COPS5 deubiquitilation and p53-dependent and -independent regulation mechanism by USP14. These findings suggest that the deubiquitinating activity of the 19S regulatory particle is a new anticancer drug target for patients with p53 deficiency.
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Affiliation(s)
- Yu-Shui Ma
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China.,Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Xiao-Feng Wang
- Department of Orthopedics, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Yun-Jie Zhang
- Department of Orthopedics, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Pei Luo
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Hui-Deng Long
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Liu Li
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Hui-Qiong Yang
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Ru-Ting Xie
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Cheng-You Jia
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Gai-Xia Lu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Zheng-Yan Chang
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Jia-Jia Zhang
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Shao-Bo Xue
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Zhong-Wei Lv
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Fei Yu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Qing Xia
- Department of Orthopedics, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Da Fu
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
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4
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Long HD, Ma YS, Yang HQ, Xue SB, Liu JB, Yu F, Lv ZW, Li JY, Xie RT, Chang ZY, Lu GX, Xie WT, Fu D, Pang LJ. Reduced hsa-miR-124-3p levels are associated with the poor survival of patients with hepatocellular carcinoma. Mol Biol Rep 2018; 45:2615-2623. [PMID: 30341691 DOI: 10.1007/s11033-018-4431-1] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2018] [Accepted: 10/09/2018] [Indexed: 12/31/2022]
Abstract
Hsa-MicroRNA-124a-3p (hsa-miR-124-3p) is involved in tumor progression in certain malignant tumors. However, its function and clinical implication in hepatocellular carcinoma (HCC) have not yet been illustrated. In this study, we explored the expression and prognostic value of hsa-miR-124-3p in patients with HCC. Hsa-miR-124-3p expression in HCC was analyzed in silico, which was subsequently confirmed by quantitative PCR in 155 HCC biopsy samples. Overall survival (OS) and disease-free survival in HCC patients was evaluated by Kaplan-Meier survival analysis, and univariate and multivariate Cox proportional hazard models were used. The in silico results demonstrated that hsa-miR-124-3p was reduced in cell lines and tissues of HCC, and hsa-miR-124-3p expression was lower in HCC tumor samples than in normal liver tissues. Moreover, a decrease in hsa-miR-124-3p expression was closely correlated with tumor diameter (≥ 5 cm) and number of lesions (multiple). Lower hsa-miR-124-3p expression was shown to be correlated with a shorter OS and poor prognosis in HCC. Our findings demonstrate that hsa-miR-124-3p might be a potential target for the diagnosis and prognosis of HCC.
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Affiliation(s)
- Hui-Deng Long
- Department of Pathology, Shihezi University School of Medicine, The First Affiliated Hospital of Shihezi University School of Medicine, Shihezi, 832003, Xinjiang, China
| | - Yu-Shui Ma
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Hui-Qiong Yang
- Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Shao-Bo Xue
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Ji-Bin Liu
- Cancer Institute of Nantong Tumor Hospital, Nantong, 226631, China
| | - Fei Yu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Zhong-Wei Lv
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Ji-Yu Li
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Ru-Ting Xie
- Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Zheng-Yan Chang
- Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Gai-Xia Lu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Wen-Ting Xie
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Da Fu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China.
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China.
| | - Li-Juan Pang
- Department of Pathology, Shihezi University School of Medicine, The First Affiliated Hospital of Shihezi University School of Medicine, Shihezi, 832003, Xinjiang, China.
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5
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Ma YS, Lv ZW, Yu F, Chang ZY, Cong XL, Zhong XM, Lu GX, Zhu J, Fu D. MicroRNA-302a/d inhibits the self-renewal capability and cell cycle entry of liver cancer stem cells by targeting the E2F7/AKT axis. J Exp Clin Cancer Res 2018; 37:252. [PMID: 30326936 PMCID: PMC6192354 DOI: 10.1186/s13046-018-0927-8] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 10/02/2018] [Indexed: 02/06/2023]
Abstract
BACKGROUND There is increasing evidence that liver cancer stem cells (LCSCs) contribute to hepatocellular carcinoma (HCC) initiation and progression. MicroRNA (miRNA) plays a significant functional role by directly regulating respective targets in LCSCs-triggered HCC, however, little is known about the function of the miRNA-302 family in LCSCs. METHODS MiRNAs microarray was used to detect the miRNAs involved in LCSCs maintenance and differentiation. Biological roles and the molecular mechanism of miRNA-302a/d and its target gene E2F7 were detected in HCC in vitro. The expression and correlation of miRNA-302a/d and E2F7 in HCC patients was evaluated by quantitative PCR and Kaplan-Meier survival analysis. RESULTS We found that the miRNA-302 family was downregulated during the spheroid formation of HCC cells and patients with lower miRNA-302a/d expression had shorter overall survival (OS) and progression-free survival (PFS). Moreover, E2F7 was confirmed to be directly targeted and inhibited by miRNA-302a/d. Furthermore, concomitant low expression of miRNA-302a/d and high expression of E2F7 correlated with a shorter median OS and PFS in HCC patients. Cellular functional analysis demonstrated that miRNA-302a/d negatively regulates self-renewal capability and cell cycle entry of liver cancer stem cells via suppression of its target gene E2F7 and its downstream AKT/β-catenin/CCND1 signaling pathway. CONCLUSIONS Our data provide the first evidence that E2F7 is a direct target of miRNA-302a/d and miRNA-302a/d inhibits the stemness of LCSCs and proliferation of HCC cells by targeting the E2F7/AKT/β-catenin/CCND1 signaling pathway.
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Affiliation(s)
- Yu-Shui Ma
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China.,Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China.,Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Zhong-Wei Lv
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Fei Yu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Zheng-Yan Chang
- Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Xian-Ling Cong
- Department of Biobank, China-Japan Union Hospital, Jilin University, Changchun, 130033, China
| | - Xiao-Ming Zhong
- Department of Radiology, Jiangxi Provincial Tumor Hospital, Nanchang, 330029, China
| | - Gai-Xia Lu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China
| | - Jian Zhu
- Department of Digestive Surgery, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Da Fu
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, 200072, China.
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6
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Lu HM, Yi WW, Ma YS, Wu W, Yu F, Fan HW, Lv ZW, Yang HQ, Chang ZY, Zhang C, Xie WT, Jiang JJ, Song YC, Chai L, Jia CY, Lu GX, Zhong XJ, Hou LK, Wu CY, Shi MX, Liu JB, Fu D. Prognostic implications of decreased microRNA-101-3p expression in patients with non-small cell lung cancer. Oncol Lett 2018; 16:7048-7056. [PMID: 30546438 PMCID: PMC6256371 DOI: 10.3892/ol.2018.9559] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Accepted: 08/21/2018] [Indexed: 12/11/2022] Open
Abstract
To investigate the expression level of microRNA-101-3p (miR-101-3p) and its possible association with progression, prognosis and chemotherapy in patients with non-small cell lung cancer (NSCLC), the Gene Expression Omnibus (GEO) database was used. Quantitative polymerase chain reaction was used to verify the expression in 327 NSCLC and 42 adjacent normal lung tissues, of which 42 viable tissues were paired with nearby normal lung tissues. Based on the Cox regression model, univariate and multivariate analyses were used to address the factors that had effects on overall survival (OS) and disease-free survival (DFS) rate. Data from the GEO database demonstrated that the miR-101-3p expression in NSCLC was downregulated, compared with normal lung cancer. Survival analysis through univariate and multivariate models indicated that the miR-101-3p expression level was a crucial risk factor for OS and DFS in patients with NSCLC. A number of clinical parameters were determined to be associated with miR-101-3p expression, including tumor diameter, lymph node metastasis and tumor-node-metastasis stage. Adjuvant chemotherapy with high expression of miR-101-3p was determined to increase OS and DFS in patients with NSCLC, compared with patients with de novo or low expression of miR-101-3p. The present results demonstrated that miR-101-3p expression levels were associated with NSCLC progression and prognosis, which indicated that miR-101-3p may serve as a biomarker for patients with NSCLC who have received adjuvant chemotherapy.
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Affiliation(s)
- Hai-Min Lu
- Department of Thoracic Surgery, Nantong Tumor Hospital, Nantong, Jiangsu 226631, P.R. China
| | - Wan-Wan Yi
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Yu-Shui Ma
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China.,Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P.R. China
| | - Wei Wu
- Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, P.R. China
| | - Fei Yu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Heng-Wei Fan
- Department of Hepatic Surgery I, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, P.R. China
| | - Zhong-Wei Lv
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Hui-Qiong Yang
- Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Zheng-Yan Chang
- Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Chao Zhang
- Department of Hepatic Surgery I, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai 200438, P.R. China
| | - Wen-Ting Xie
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Jun-Jian Jiang
- Department of Hand Surgery, Huashan Hospital, Fudan University, Shanghai 200040, P.R. China
| | - Ying-Chun Song
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Li Chai
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Cheng-You Jia
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Gai-Xia Lu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Xiao-Jun Zhong
- Department of Oncology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangsu 330006, P.R. China
| | - Li-Kun Hou
- Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, P.R. China
| | - Chun-Yan Wu
- Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai 200433, P.R. China
| | - Min-Xin Shi
- Department of Thoracic Surgery, Nantong Tumor Hospital, Nantong, Jiangsu 226631, P.R. China
| | - Ji-Bin Liu
- Department of Thoracic Surgery, Nantong Tumor Hospital, Nantong, Jiangsu 226631, P.R. China
| | - Da Fu
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
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7
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Qi RZ, Zhao X, Wang SZ, Zhang K, Chang ZY, Hu XL, Wu ML, Zhang PR, Yu LX, Xiao CH, Shi XJ, Li ZW. [Postoperative complications and survival analysis of 1 118 cases of open splenectomy and azygoportal disconnection in the treatment of portal hypertension]. Zhonghua Wai Ke Za Zhi 2018; 56:436-441. [PMID: 29886667 DOI: 10.3760/cma.j.issn.0529-5815.2018.06.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To analyze the recent postoperative and long-term postoperative complications of open-splenectomy and disconnection in patients with portal hypertension. Methods: There were 1 118 cases with portal hypertension who underwent open splenectomy and azygoportal disconnection from April 2010 to September 2015 at Department of Surgery, People's Liberation Army 302 Hospital. Retrospective case investigation and telephone follow-up were conducted in October 2016. All patients had history of upper gastrointestinal bleeding before operation. Short-term complications after surgery were recorded including secondary laparotomy of postoperative abdominal hemostasis, severe infection, intake disorders, liver insufficiency, postoperative portal vein thrombosis and perioperative mortality. Long-term data including postoperative upper gastrointestinal rebleeding, postoperative survival rate and incidence of postoperative malignancy were recorded, too. GraphPad Prism 5 software for data survival analysis and charting. Results: Postoperative short-term complications in 1 118 patients included secondary laparotomy of postoperative abdominal hemostasis(1.8%, 21/1 118), severe infection(2.9%, 32/1 118), intake disorders(1.0%, 11/1 118), liver dysfunction (1.6%, 18/1 118), postoperative portal vein thrombosis(47.1%, 526/1 118)and perioperative mortality(0.5%, 5/1 118). After phone call following-up, 942 patients' long-term data were completed including 1, 3, 5 years postoperative upper gastrointestinal rebleeding rate(4.4%, 12.1%, 17.2%), 1, 3, 5-year postoperative survival rate(97.0%, 93.5%, 90.3%); the incidence of postoperative malignant tumors in 1, 3 and 5 years were 1.7%, 4.4% and 6.2%. Conclusions: Reasonable choosing of surgical indications and timing, proper performing the surgery process, effective conducting perioperative management of portal hypertension are directly related to the patient's short-term prognosis after portal hypertension. Surgical intervention can reduce the rates of patients with upper gastrointestinal rebleeding, improve survival, and do not increase the incidence of malignant tumors.
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Affiliation(s)
- R Z Qi
- Department of General Surgery, People's Liberation Army 302 Hospital, Beijing 100039, China
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8
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Xie RT, Cong XL, Zhong XM, Luo P, Yang HQ, Lu GX, Luo P, Chang ZY, Sun R, Wu TM, Lv ZW, Fu D, Ma YS. MicroRNA-33a downregulation is associated with tumorigenesis and poor prognosis in patients with hepatocellular carcinoma. Oncol Lett 2018. [PMID: 29541227 DOI: 10.3892/ol.2018.7892] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
In order to examine the prognostic significance of miR-33a in patients with hepatocellular carcinoma (HCC), total RNA was extracted from 149 HCC biopsies, 36 of which were paired with para-carcinoma tissues, and miR-33a expression was measured by reverse transcription-quantitative polymerase chain reaction. The results demonstrated that miR-33a expression was decreased in HCC biopsies compared with normal liver tissue samples. It was also demonstrated that miR-33a expression was significantly associated with tumor foci number. Furthermore, overall and progression-free survival time was decreased in patients expressing low miR-33a with multiple tumor foci. Taken together, the low expression of miR-33a may be a potential risk factor for HCC.
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Affiliation(s)
- Ru-Ting Xie
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China.,Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Xian-Ling Cong
- Tissue Bank, China-Japan Union Hospital, Jilin University, Changchun, Jilin 130033, P.R. China
| | - Xiao-Ming Zhong
- Department of Radiology, Jiangxi Provincial Tumor Hospital, Nanchang, Jiangxi 330029, P.R. China
| | - Ping Luo
- Department of Breast Cancer, Nanchang Third Hospital, Nanchang, Jiangxi 330002, P.R. China
| | - Hui-Qiong Yang
- Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Gai-Xia Lu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Pei Luo
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Zheng-Yan Chang
- Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Ran Sun
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Ting-Miao Wu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Zhong-Wei Lv
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Da Fu
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China
| | - Yu-Shui Ma
- Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, P.R. China.,Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P.R. China
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9
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Abstract
With increasing emphasis on patient autonomy, patients are encouraged to be more involved in end-of-life issues, including the use of extraordinary efforts to prolong their lives. Being able to make anticipatory decisions is seen to promote autonomy, empower patients and optimise patient care. To facilitate shared decision-making, patients need to have a clear and accurate understanding of cardiopulmonary resuscitation (CPR). This study aims to understand the knowledge and perspectives of the local community regarding resuscitation options and end-of-life decision-making and to explore ways to improve the quality of end-of-life discussions. An interviewer-administered survey was conducted with a prospectively recruited group of surgical patients admitted postoperatively to the day surgery ward of a single tertiary institution in Singapore from April to May 2015. The survey, modelled after two validated questionnaires, measured patients' knowledge, attitudes and preferences regarding CPR in a series of 18 questions. Fifty-one out of 67 (76.1%) patients completed the survey. Results indicated that 80.4% (n=41) of participants correctly understood the purpose of CPR, but 64.7% (n=33) did not know of any possible complications of CPR. Less than half (n=21, 41.2%) of participants had thought about life support measures they wanted for themselves. Most of the participants agreed that they should personally be involved in making end-of-life decisions (n=44, 86.3%). Many patients had a poor knowledge of CPR and other resuscitation measures and the majority overestimated the success rate of CPR. However, a majority were receptive to improving their knowledge and keen to discuss end-of-life issues with physicians.
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Affiliation(s)
- S Wee
- Resident, Department of Anaesthesiology, Intensive Care and Pain Medicine, Tan Tock Seng Hospital, Singapore
| | - Z Y Chang
- Medical student, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Y H Lau
- Consultant, Department of Anaesthesiology, Intensive Care and Pain Medicine, Tan Tock Seng Hospital, Singapore
| | - Yky Wong
- Senior Epidemiologist, Clinical Research and Innovation Office, Tan Tock Seng Hospital, Singapore
| | - Cym Ong
- Consultant, Department of Anaesthesiology, Intensive Care and Pain Medicine, Tan Tock Seng Hospital, Singapore
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10
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Ma YS, Wu TM, Lv ZW, Lu GX, Cong XL, Xie RT, Yang HQ, Chang ZY, Sun R, Chai L, Cai MX, Zhong XJ, Zhu J, Fu D. High expression of miR-105-1 positively correlates with clinical prognosis of hepatocellular carcinoma by targeting oncogene NCOA1. Oncotarget 2017; 8:11896-11905. [PMID: 28060733 PMCID: PMC5355313 DOI: 10.18632/oncotarget.14435] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Accepted: 12/21/2016] [Indexed: 12/21/2022] Open
Abstract
Increasing evidence supports that microRNA (miRNA) plays a significant functional role in cancer progression by directly regulating respective targets. In this study, the expression levels of miR-105-1 and its target gene were analyzed using genes microarray and hierarchical clustering analysis followed by validation with quantitative RT-PCR in hepatocellular carcinoma (HCC) and normal liver tissues. We examined the expression of nuclear receptor coactivator 1 (NCOA1), the potential target gene of miR-105-1, following the transfection of miR-105-1 mimics or inhibitors. Our results showed that miR-105-1 was downregulated in HCC tissues when compared with normal liver tissues and patients with lower miR-105-1 expression had shorter overall survival (OS) and progression free survival (PFS). Moreover, NCOA1 was confirmed to be a direct target of miR-105-1. Furthermore, concomitant high expression of NCOA1 and low expression of miR-105-1 correlated with a shorter median OS and PFS in HCC patients. In conclusion, our results provide the first evidence that NCOA1 is a direct target of miR-105-1 suggesting that NCOA1 and miR-105-1 may have potential prognostic value and may be useful as tumor biomarkers for the diagnosis of HCC patients.
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Affiliation(s)
- Yu-Shui Ma
- 1 Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
- 2 Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, China
| | - Ting-Miao Wu
- 1 Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
- 3 Department of Radiology, the Fourth Affiliated Hospital, Medical University of Anhui, Hefei 230601, China
| | - Zhong-Wei Lv
- 1 Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Gai-Xia Lu
- 1 Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Xian-Ling Cong
- 4 Tissue Bank, China-Japan Union Hospital, Jilin University, Changchun 130033, China
| | - Ru-Ting Xie
- 5 Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Hui-Qiong Yang
- 5 Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Zheng-Yan Chang
- 5 Department of Pathology, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Ran Sun
- 4 Tissue Bank, China-Japan Union Hospital, Jilin University, Changchun 130033, China
| | - Li Chai
- 1 Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Ming-Xiang Cai
- 1 Department of Nuclear Medicine, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
| | - Xiao-Jun Zhong
- 6 Department of Medical Oncology, the First Affiliated Hospital of Nanchang University, Nanchang 330006, China
| | - Jian Zhu
- 7 Department of Digestive Surgery, Rui Jin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Da Fu
- 8 Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
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11
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Hou LK, Ma YS, Han Y, Lu GX, Luo P, Chang ZY, Xie RT, Yang HQ, Chai L, Cai MX, Wu TM, Yu F, Qin SS, Lv ZW, Wu CY, Fu D. Association of microRNA-33a Molecular Signature with Non-Small Cell Lung Cancer Diagnosis and Prognosis after Chemotherapy. PLoS One 2017; 12:e0170431. [PMID: 28141816 PMCID: PMC5283662 DOI: 10.1371/journal.pone.0170431] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2016] [Accepted: 01/04/2017] [Indexed: 12/14/2022] Open
Abstract
OBJECTIVE This study aims to explore the expression pattern and prognostic significance of miR-33a in non-small cell lung cancer (NSCLC) treated with adjuvant chemotherapy. METHODS MiR-33aexpression in NSCLC was analyzed in silico using the GEO database and was subsequently confirmed by quantitative RT-PCR in 147 NSCLC biopsies. Among these, 32 of these biopsies were paired with adjacent non-neoplastic tissues. The survival analysis of NSCLC by Kaplan-Meier estimates was stratified based on miR-33a expression. In addition, multivariate survival analysis in corresponding groups of NSCLC patients was conducted by Cox proportional hazards regression model. RESULTS The in silico analysis of miR-33a expression in NSCLC resulted to its down-regulation in different tumor types. The expression level of miR-33a was lower in each grade of NSCLC tumor biopsies than in normal lung tissues. Univariate and multivariate survival analysis further established that low miR-33a expression was an important risk factor for overall survival and disease free survival in NSCLC patients. CONCLUSION Our study implied that miR-33a expression levels may have an essential role in NSCLC progression, and could act as a specific and sensitive biomarker for NSCLC patients who have undergone adjuvant chemotherapy.
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Affiliation(s)
- Li-Kun Hou
- Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yu-Shui Ma
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, College of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
- Department of Nuclear Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yang Han
- Department of Radiology, Department of Translational Medicine Center & Medical Imaging Research Institute, Central Hospital of Baotou, Inner Mongolia, Inner Mongolia Medical University, China
| | - Gai-Xia Lu
- Department of Nuclear Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Pei Luo
- Veterinary Faculty, College of Veterinary Medicine, Hunan Agricultural University, Changsha, China
| | - Zheng-Yan Chang
- Department of Pathology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ru-Ting Xie
- Department of Pathology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Hui-Qiong Yang
- Department of Pathology, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Li Chai
- Department of Nuclear Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ming-Xiang Cai
- Department of Nuclear Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Ting-Miao Wu
- Department of Nuclear Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Fei Yu
- Department of Nuclear Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Shan-Shan Qin
- Department of Nuclear Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Zhong-Wei Lv
- Department of Nuclear Medicine, Shanghai Tenth People’s Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chun-Yan Wu
- Department of Pathology, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai, China
| | - Da Fu
- Central Laboratory for Medical Research, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
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12
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Chang ZY, Sun R, Ma YS, Fu D, Lai XL, Li YS, Wang XH, Zhang XP, Lv ZW, Cong XL, Li WP. Differential gene expression of the key signalling pathway in para-carcinoma, carcinoma and relapse human pancreatic cancer. Cell Biochem Funct 2014; 32:258-67. [PMID: 24122964 DOI: 10.1002/cbf.3009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2013] [Revised: 09/01/2013] [Accepted: 09/16/2013] [Indexed: 01/21/2023]
Abstract
Pancreatic cancer (PC) has a high rate of mortality and a poorly understood mechanism of progression. Investigation of the molecular mechanism of PC and exploration of the specific markers for early diagnosis and specific targets of therapy are key points to prevent and treat PC effectively and to improve their prognosis. In our study, expression profiles experiment of para-carcinoma, carcinoma and relapse human PC was performed using Agilent human whole genomic oligonucleotide microarrays with 45 000 probes. Differentially expressed genes related with PC were screened and analysed further by Gene Ontology term analysis and Kyoto encyclopaedia of genes and genomes pathway analysis. Our results showed that there were 3853 differentially expressed genes associated with pancreatic carcinogenesis and relapse. In addition, our study found that PC was related to the Jak-STAT signalling pathway, PPAR signalling pathway and Calcium signalling pathway, indicating their potential roles in pancreatic carcinogenesis and progress.
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Affiliation(s)
- Zheng-Yan Chang
- Veterinary Faculty, College of Veterinary Medicine, Hunan Agricultural University, Changsha, China
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Etzkorn FA, Chang ZY, Stolz LA, Walsh CT. Cyclophilin residues that affect noncompetitive inhibition of the protein serine phosphatase activity of calcineurin by the cyclophilin.cyclosporin A complex. Biochemistry 1994; 33:2380-8. [PMID: 8117697 DOI: 10.1021/bi00175a005] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Mutation of three cationic surface residues of human cyclophilin A (hCyPA), R69, K125, and R148, to both anionic and neutral residues left its intrinsic peptidyl-prolyl isomerase (PPIase) activity and cyclosporin A (CsA) binding unaffected, but altered its ability to inhibit the serine phosphatase activity of calcineurin (CN). R69E was 13-fold less effective (Ki = 3400 nM) than wild-type hCyPA (Ki = 270 nM) in presenting CsA for calcineurin phosphatase inhibition, while R148E was 17-fold more effective (Ki < or = 16 nM), and human CyPB was 13-fold better (Ki < or = 21 nM), establishing that a composite drug/protein surface is being recognized. The phosphoserine phosphatase reaction catalyzed by CN using unlabeled phosphoserine RII19 peptide was coupled to a continuous spectrophotometric assay to measure inorganic phosphate production using the enzyme purine ribonucleoside phosphorylase and the substrate N7-methyl-2-thioguanosine [Webb, M. R. (1992) Proc. Natl. Acad. Sci. U.S.A. 89, 4884-4887]. With this assay, we have determined that human cyclophilin A complexed with the immunosuppressive drug cyclosporin A is a noncompetitive inhibitor of calcineurin phosphatase activity. This mutational analysis identified hCyPA residues that interact with CN, and comparison to similar data on FKBP allowed us to begin to map out the CN recognition surface. The p-nitrophenylphosphatase activity of CN was stimulated ca. 3-fold by CyP.CsA, presumably reflecting altered active site geometry and selective access of this small substrate.
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Affiliation(s)
- F A Etzkorn
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, Massachusetts 02115
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14
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Ke H, Mayrose D, Belshaw PJ, Alberg DG, Schreiber SL, Chang ZY, Etzkorn FA, Ho S, Walsh CT. Crystal structures of cyclophilin A complexed with cyclosporin A and N-methyl-4-[(E)-2-butenyl]-4,4-dimethylthreonine cyclosporin A. Structure 1994; 2:33-44. [PMID: 8075981 DOI: 10.1016/s0969-2126(00)00006-x] [Citation(s) in RCA: 69] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
BACKGROUND Cyclophilin (CyP) is a ubiquitious intracellular protein that binds the immunosuppressive drug cyclosporin A (CsA). CyP-CsA forms a ternary complex with calcineurin and thereby inhibits T-cell activation. CyP also has enzymatic activity, catalyzing the cis-trans isomerization of peptidyl-prolyl amide bonds. RESULTS We have determined the structure of human cyclophilin A (CyPA) complexed with CsA to 2.1 A resolution. We also report here the structure of CyPA complexed with an analog of CsA, CsA (MeBm2t1-CsA), which binds less well to CyPA, but has increased immunosuppressive activity. Comparison of these structures with previously determined structures of unligated CyPA and CyPA complexed with a candidate substrate for the isomerase activity, the dipeptide AlaPro, reveals that subtle conformational changes occur in both CsA and CyPA on complex formation. CONCLUSIONS MeBm2t1-CsA binds to CyPA in an essentially similar manner to CsA. The 100-fold weaker affinity of its binding may be attributable to the close contact between MeBmt1 and the active site residue Ala103 of CyPA, which causes small conformational changes in both protein and drug. One change, the slight movement of MeLeu6 in CsA relative to MeBm2t1-CsA, may be at least partially responsible for the higher affinity of the CyPA-MeBm2t1-CsA complex for calcineurin. Our comparison between CyPA-CsA and CyPA-AlaPro suggests that CsA is probably not an analog of the natural substrate, confirming that the catalytic activity of CyPA is not related to its role in immunosuppression either structurally or functionally.
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Affiliation(s)
- H Ke
- Department of Biochemistry and Biophysics, School of Medicine, University of North Carolina, Chapel HIll 27599
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Chang ZY, Nygaard P, Chinault AC, Kellems RE. Deduced amino acid sequence of Escherichia coli adenosine deaminase reveals evolutionarily conserved amino acid residues: implications for catalytic function. Biochemistry 1991; 30:2273-80. [PMID: 1998686 DOI: 10.1021/bi00222a033] [Citation(s) in RCA: 98] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The goal of the research reported here is to identify evolutionarily conserved amino acid residues associated with enzymatic deamination of adenosine. To do this, we isolated molecular clones of the Escherichia coli adenosine deaminase gene by functional complementation of adenosine deaminase deficient bacteria and deduced the amino acid sequence of the enzyme from the nucleotide sequence of the gene. Nucleotide sequence analysis revealed the presence of a 996-nucleotide open reading frame encoding a protein of 332 amino acids having a molecular weight of 36,345. The deduced amino acid sequence of the E. coli enzyme has approximately 33% identity with those of the mammalian adenosine deaminases. With conservative amino acid substitutions the overall sequence homology approaches 50%, suggesting that the structures and functions of the mammalian and bacterial enzymes are similar. Additional amino acid sequence analysis revealed specific residues that are conserved among all three adenosine deaminases and four AMP deaminases for which sequence information is currently available. In view of previously published enzymological data and the conserved amino acid residues identified in this study, we propose a model to account for the enzyme-catalyzed hydrolytic deamination of adenosine. Potential catalytic roles are assigned to the conserved His 214, Cys 262, Asp 295, and Asp 296 residues of mammalian adenosine deaminases and the corresponding conserved amino acid residues in bacterial adenosine deaminase and the eukaryotic AMP deaminases.
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Affiliation(s)
- Z Y Chang
- Verna and Marrs McLean Department of Biochemistry, Baylor College of Medicine, Houston, Texas 77030
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Abstract
Measurements were made of the plasma glucose and insulin responses to a 75 g oral glucose challenge in 50 Chinese born in Taiwan, divided into two groups on the basis of family history of Type 2 diabetes. Twenty-five individuals (age 29 +/- 5 (+/- SD) years) had 2 parents with normal oral glucose tolerance, whereas at least 1 parent had Type 2 diabetes in the other 25 subjects (age 30 +/- 6 years). In addition, in vivo insulin action was estimated by determining the steady-state plasma glucose concentration during a 3-h continuous infusion of glucose, insulin, and somatostatin. Steady-state plasma glucose concentration was used as a measure of insulin-induced glucose disposal. The 50 subjects were non-obese, and of comparable gender distribution and body mass index. Plasma glucose and insulin concentrations in response to oral glucose were similar in the two groups. However, the steady-state plasma glucose concentration was significantly (p less than 0.01) higher in offspring with a family history of Type 2 diabetes when compared by two-way analysis of variance (mean +/- SE was 5.87 +/- 0.27 vs 5.12 +/- 0.32 mmol l-1). This difference was found despite a significantly (p less than 0.01) higher steady-state plasma insulin concentration during the infusion studies (0.705 +/- 0.027 vs 0.643 +/- 0.025 nmol l-1) in offspring of people with diabetes. The results support the view that resistance to insulin-stimulated glucose uptake is present in offspring of diabetic parents.
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Affiliation(s)
- L T Ho
- Department of Medicine, Veterans General Hospital, Taipei, Taiwan, Republic of China
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