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Ke H, Fan L. [Annual progress of immunotherapy for tuberculosis in 2023]. Zhonghua Jie He He Hu Xi Za Zhi 2024; 47:371-375. [PMID: 38599815 DOI: 10.3760/cma.j.cn112147-20231031-00283] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/12/2024]
Abstract
As a chronic infectious disease, tuberculosis (TB) is closely related to immune regulation and immune effect. Immunotherapy which can improve the curative effect of tuberculosis and control the spread of tuberculosis, is one of the important means for the comprehensive treatment of tuberculosis. From October 2022 to September 2023, research on the immunotherapy of tuberculosis at home and abroad continues to increase, providing new opportunities for the treatment of multidrug-resistant and extensively drug-resistant tuberculosis. Host-targeted therapy and therapeutic vaccines are new directions for research into TB adjuvant therapy.
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Affiliation(s)
- H Ke
- Department of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai Clinic and Research Center of Tuberculosis, Shanghai Key Laboratory of Tuberculosis, Shanghai 200433, China
| | - L Fan
- Department of Tuberculosis, Shanghai Pulmonary Hospital, Tongji University School of Medicine, Shanghai Clinic and Research Center of Tuberculosis, Shanghai Key Laboratory of Tuberculosis, Shanghai 200433, China
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Lai T, Li J, Zhou Z, Rao J, Zhu Y, Xia L, Lei Y, Huang X, Ke H, Wu Y, Liu P, Zeng H, Xiong H, Luo L, Chen Y, He W, Zhu Y, Lu N. Etiological Changes and Prognosis of Hospitalized Patients with Acute Pancreatitis Over a 15-Year Period. Dig Dis Sci 2024; 69:56-65. [PMID: 37943383 DOI: 10.1007/s10620-023-08172-0] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 10/27/2023] [Indexed: 11/10/2023]
Abstract
BACKGROUND The worldwide incidence of acute pancreatitis (AP) is increasing, but the dominant etiology of AP may vary by country. Mixed etiologies are involved in the increase in the number of AP patients. AIMS This study was to analyze the etiological changes and prognosis of AP patients and explore the prognosis of AP patients with mixed etiologies. METHODS Using a retrospective analysis method, AP patients hospitalized from January 2007 to December 2021 were selected from a pancreatic center in Nanchang, China. Trends in the main etiologies were analyzed, and the severity and prognosis of different etiologies were compared. RESULTS A total of 10,071 patients were included. Cholelithiasis (56.0%), hyperlipidemia (25.3%), and alcohol (6.5%) were the top three etiologies. The proportion of acute biliary pancreatitis (ABP) showed a decreasing trend, while the proportion of hypertriglyceridemic pancreatitis (HTGP) and alcoholic AP showed an increasing trend (all ptrend < 0.001). The incidence of organ failure and necrotizing pancreatitis was higher in patients with HTGP than in those with AP induced by other etiologies (all p < 0.05). There was no statistically significant difference in mortality among patients with different etiologies. Patients with AP due to a mixed hypertriglyceridemia-alcoholic etiology had higher ICU admission rates and were more severe than those with AP induced by other mixed etiologies. CONCLUSION In the past 15 years, the proportion of ABP has trended downward, while those of HTGP and alcoholic AP have risen. Among patients with mixed etiologies, those with a mixed hypertriglyceridemia-alcoholic etiology had a worse prognosis.
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Affiliation(s)
- Tianming Lai
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Jiarong Li
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Zhengang Zhou
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Jingwen Rao
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Yong Zhu
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Liang Xia
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Yupeng Lei
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Xin Huang
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Huajing Ke
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Yao Wu
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Pi Liu
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Hao Zeng
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Huifang Xiong
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Lingyu Luo
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Youxiang Chen
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Wenhua He
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China.
| | - Yin Zhu
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
| | - Nonghua Lu
- Department of Gastroenterology, Digestive Disease Hospital, First Affiliated Hospital of Nanchang University, 17 Yong Wai Zheng Street, 330006, Nanchang, Jiangxi, People's Republic of China
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Liu Z, Ke H, Xiong Y, Liu H, Yue M, Liu P. Gastrointestinal Fistulas in Necrotizing Pancreatitis Receiving a Step-Up Approach Incidence, Risk Factors, Outcomes and Treatment. J Inflamm Res 2023; 16:5531-5543. [PMID: 38026251 PMCID: PMC10676678 DOI: 10.2147/jir.s433682] [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] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2023] [Accepted: 11/10/2023] [Indexed: 12/01/2023] Open
Abstract
Purpose Necrotizing pancreatitis (NP) complicated by gastrointestinal fistula is challenging and understudied. As the treatment of necrotizing pancreatitis changed to a step-up strategy, we attempted to evaluate the incidence, risk factors, clinical outcomes and treatment of gastrointestinal fistulas in patients receiving a step-up approach. Methods Clinical data from 1274 patients with NP from 2014-2022 were retrospectively analyzed. Multivariable logistic regression analysis was conducted to identify risk factors and propensity score matching (PSM) to explore clinical outcomes in patients with gastrointestinal fistulas. Results Gastrointestinal fistulas occurred in 8.01% (102/1274) of patients. Of these, 10 were gastric fistulas, 52 were duodenal fistulas, 14 were jejunal or ileal fistulas and 41 were colonic fistulas. Low albumin on admission (OR, 0.936), higher CTSI (OR, 1.143) and invasive intervention prior to diagnosis of gastrointestinal fistula (OR, 5.84) were independent risk factors for the occurrence of gastrointestinal fistula, and early enteral nutrition (OR, 0.191) was a protective factor. Patients who developed a gastrointestinal fistula were in a worse condition on admission and had a poorer clinical outcome (p<0.05). After PSM, both groups of patients had similar baseline information and clinical characteristics at admission. The development of gastrointestinal fistulas resulted in new-onset persistent organ failure, increased open surgery, prolonged parenteral nutrition and hospitalization, but not increased mortality. The majority of patients received only conservative treatment and minimally invasive interventions, with 7 patients (11.3%) receiving surgery for upper gastrointestinal fistulas and 11 patients (26.9%) for colonic fistulas. Conclusion Gastrointestinal fistulas occurred in 8.01% of NP patients. Independent risk factors were low albumin, high CTSI and early intervention, while early enteral nutrition was a protective factor. After PSM, gastrointestinal fistulas resulted in an increased proportion of NP patients receiving open surgery and prolonged hospitalization. The majority of patients with gastrointestinal fistulas treated with step-up therapy could avoid surgery.
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Affiliation(s)
- Zheyu Liu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People’s Republic of China
| | - Huajing Ke
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People’s Republic of China
| | - Yuwen Xiong
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People’s Republic of China
| | - Hui Liu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, People’s Republic of China
| | - Mengli Yue
- Affiliated Longhua People’s Hospital, The Third School of Clinical Medicine, Southern Medical University, Shenzhen, People’s Republic of China
| | - Pi Liu
- Department of Gastroenterology, Affiliated Longhua People’s Hospital, Southern Medical University, Shenzhen, People’s Republic of China
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Chen X, Shi W, Xie Y, Wang Y, Yao Q, Ke H, Xu X, Liu H, Liu P, Zhou X. Hepatic Krüppel-like factor 14 regulates lipid metabolism in nonalcoholic steatohepatitis mice. FASEB J 2023; 37:e23070. [PMID: 37389939 DOI: 10.1096/fj.202300448r] [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] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 05/31/2023] [Accepted: 06/20/2023] [Indexed: 07/01/2023]
Abstract
Excessive lipid accumulation is a critical characteristic in the development of nonalcoholic steatohepatitis (NASH). The underlying molecular mechanism, however, is unclear. In this study, we explored whether and how Krüppel-like factor 14 (KLF14) affects hepatic lipid metabolism in NASH. KLF14 expression was detected in NASH patients and mice fed a choline-deficient, L-amino acid-defined, high-fat diet (CDAHFD). Adeno-associated viruses and adenoviruses were used to alter hepatic KLF14 expression in vivo or in vitro to investigate how KLF14 functions in lipid regulation. The molecular mechanisms were explored using RNA-seq, luciferase reporter, and ChIP assays. The fatty liver phenotype was analyzed histopathologically, and serum and hepatocyte biochemical parameters were measured. The NASH mouse model developed quickly in C57BL/6J mice fed a CDAHFD for 8 weeks. We found that KLF14 expression was decreased in NASH patients and CDAHFD mice. Oleic acid and palmitic acid treatment also reduced KLF14 levels in hepatocytes. KLF14 knockdown downregulated the genes involved in fatty acid oxidation, promoting the progression of hepatic steatosis. In contrast, hepatic KLF14 overexpression alleviated lipid accumulation and oxidative stress in CDAHFD mice. These effects resulted from direct activation of the PPARα signaling pathway. PPARα inhibition diminished the KLF14 overexpression-reduced protective effects against steatosis in OA&PA-treated MPHs and AAV-KLF14-infected CDAHFD mice. These data reveal that hepatic KLF14 regulates lipid accumulation and oxidative stress through the KLF14-PPARα pathway as NASH progresses. KLF14 may be a novel therapeutic target for hepatic steatosis.
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Affiliation(s)
- Xiaoyan Chen
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Gastroenterology Institute of Jiangxi Province, Nanchang, China
| | - Wenjie Shi
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yong Xie
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Gastroenterology Institute of Jiangxi Province, Nanchang, China
| | - Yunwu Wang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qian Yao
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Gastroenterology Institute of Jiangxi Province, Nanchang, China
| | - Huajing Ke
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xuan Xu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Gastroenterology Institute of Jiangxi Province, Nanchang, China
| | - Hui Liu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Gastroenterology Institute of Jiangxi Province, Nanchang, China
| | - Pi Liu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Gastroenterology, The People's Hospital of Longhua, Shenzhen, China
| | - Xiaojiang Zhou
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
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Peng S, Yao Q, Fu Y, Xu X, Chen S, Ke H, Hu Y, Xiong H, He W, Zhu Y, Xia L, Wu Y, Shu X, Liu Z, Zhu Y, Chen Y, Lu N, Liu P. The severity and infection of acute pancreatitis may increase the risk of bleeding in patients undergoing EUS-guided drainage and endoscopic necrosectomy: a large retrospective cohort. Surg Endosc 2023:10.1007/s00464-023-10059-0. [PMID: 37188909 DOI: 10.1007/s00464-023-10059-0] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Accepted: 04/01/2023] [Indexed: 05/17/2023]
Abstract
BACKGROUND There has been great progress in the use of endoscopic ultrasound (EUS)-guided drainage in acute pancreatitis patients using a novel lumen-apposing metal stent (LAMS) in the last decade, but some patients experience bleeding. Our research analyzed the preprocedural risk factors for bleeding. METHODS From July 13, 2016 to June 23, 2021, we retrospectively analyzed all patients who received endoscopic drainage by the LAMS in our hospital. Univariate and multivariate statistical analyses were used to identify the independent risk factors. We plotted ROC curves based on the independent risk factors. RESULTS A total of 205 patients were analyzed and 5 patients were excluded. A total of 200 patients were included in our research. Thirty (15%) patients presented with bleeding. In the multivariate analysis, computed tomography severity index score (CTSI) score [odds ratio (OR), 2.66; 95% CI: 1.31-5.38; P = 0.007], positive blood cultures [odds ratio (OR), 5.35; 95% CI: 1.31-21.9; P = 0.02], and Acute Physiology and Chronic Health Evaluation II (APACHE II) score [odds ratio (OR), 1.14; 95% CI: 1. 01-1.29; P = 0.045] were associated with bleeding. The area under the ROC curve of the combined predictive indicator was 0.79. CONCLUSION Bleeding in endoscopic drainage by the LAMS is significantly associated with the CTSI score, positive blood cultures, and APACHE II score. This result could help clinicians make more appropriate choices.
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Affiliation(s)
- Siyang Peng
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qian Yao
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yunfeng Fu
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xuan Xu
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - SiHai Chen
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Huajing Ke
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yang Hu
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Huifang Xiong
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wenhua He
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yong Zhu
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Liang Xia
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yao Wu
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xu Shu
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Zhijian Liu
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yin Zhu
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Youxiang Chen
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Nonghua Lu
- Department of Gastroenterology, Pancreatic Disease Centre, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Pi Liu
- Department of Gastroenterology, Affiliated Longhua People's Hospital, Southern Medical University, Shenzhen, 518109, China.
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Xu X, Guan L, Wu Y, Ke H, Zhao Y, Liu P. One hundred most cited articles related to Endoscopic retrograde cholangiopancreatography: A bibliometric analysis. Front Surg 2022; 9:1005771. [PMID: 36439532 PMCID: PMC9681810 DOI: 10.3389/fsurg.2022.1005771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 10/20/2022] [Indexed: 11/11/2022] Open
Abstract
Background Endoscopic retrograde cholangiopancreatography (ERCP) has developed over the past few decades into a reliable technology for diagnostic and therapeutic purposes. Through a bibliometric analysis, this research attempted to evaluate the characteristics of the top 100 articles on ERCP that had the most citations. Methods We extracted pertinent publications from the Web of Science Core Collection (WoSCC) on July 9, 2022. The top 100 ERCP articles with the most citations were identified and analyzed. The following data were extracted: publication year, country/region, organization, total citation times, annual citation times, research type and research field, etc. To implement the network’s visual analysis, a bibliographic coupling network based on keywords was built using the VOSviewer 1.6.17 program. Results The journal with the most publications were GASTROINTESTINAL ENDOSCOPY, with 45 articles. Most of the top 100 articles came from the United States (n = 47) and Italy (n = 14). Indiana University and the University of Amsterdam were among the most important institutions in ERCP research. ML Freeman of the University of Minnesota contributed the highest number (n = 9) and the most highly cited paper. The age of the paper and article type is closely related to citation frequency. Of the 100 most-cited articles, clinical application in the field of ERCP has focused on three aspects: diagnosis, treatment, and complications. Clinical use of ERCP has shifted from diagnosis to treatment. Post-ERCP pancreatitis is the focus of attention, and the clinical application of technically complex therapeutic ERCP is the future development trend. Conclusion This study lists the most influential articles in ERCP by exposing the current state of the field, and showing the evolution of research trends to provide perspective for the future development of ERCP.
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Affiliation(s)
- Xuan Xu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- First Clinical Medical College, Nanchang University, Nanchang, China
| | - Lulu Guan
- First Clinical Medical College, Nanchang University, Nanchang, China
| | - Yao Wu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Huajing Ke
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yuanbin Zhao
- Second Clinical Medical College, Nanchang University, Nanchang, China
| | - Pi Liu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
- Department of Gastroenterology, The People’s Hospital of Longhua, Shenzhen, China
- Correspondence: Pi Liu
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An X, Zang M, Xiong L, Ke H, Tao Y, Chen C, Li H. HX301, a potent CSF1R inhibitor, suppresses tumor associated M2 macrophage (TAM), enhancing tumor immunity and causing transit tumor inhibition in syngeneic EMT-6 tumors. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)01126-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Jiao Z, Ke H, Zhang F, Li H, Wang J. HX301 (ON123300) shows broad antitumor activity in preclinical mantle cell lymphoma models, inclusive of those resistant to BTKi. Eur J Cancer 2022. [DOI: 10.1016/s0959-8049(22)00850-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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Yu C, Ding L, Jiang M, Liao Q, Huang X, Lei Y, Ke H, Xiong H, He W, Xia L, Zeng X, Lu N, Zhu Y. Dynamic Changes and Nomogram Prediction for Sinistral Portal Hypertension in Moderate and Severe Acute Pancreatitis. Front Med (Lausanne) 2022; 9:875263. [PMID: 35721067 PMCID: PMC9198833 DOI: 10.3389/fmed.2022.875263] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 02/14/2022] [Accepted: 04/25/2022] [Indexed: 11/13/2022] Open
Abstract
Objectives To investigate the dynamic changes in gastric varices in patients with acute pancreatitis (AP) and to develop a novel nomogram for the early prediction of sinistral portal hypertension (SPH). Methods This was a retrospective, case-control study with an analysis of the quantitative, dynamic computed tomography imaging results of SPH in patients with moderate and severe AP with a long-term follow-up. Multivariate logistic regression analysis and nomogram were employed. Results The SPH group (n = 94) and non-SPH group (n = 94) were matched. The dynamic changes showed an increasing trend in the diameter of gastric fundus, short gastric, gastric coronary, and gastroepiploic veins, which did not recover during the one-year follow-up. Multivariate analysis showed that male (adjusted odds ratio (adjOR), 8.71; 95% confidence interval (CI), 2.86–26.53; P < 0.001), body mass index ≥27.5 kg/m2 (adjOR, 5.49; 95% CI, 1.85–16.29; P = 0.002), prothrombin time ≥12.6 s (adjOR, 2.82; 95% CI, 1.11–7.17; P = 0.03), and the patency of splenic vein [stenosis (adjOR, 8.48; 95% CI, 2.13–33.71; P = 0.002), and occlusion (adjOR, 34.57; 95% CI, 10.87–110.00; P < 0.001)] were independently associated with the development of SPH. The nomogram incorporating these factors demonstrated good discrimination, calibration and clinical utility. The area under the curve was as high as 0.92 (95% CI, 0.87–0.95). Conclusion The dynamic changes in varices in SPH are long-term and slowly progressing. Males and obese patients with abnormal splenic veins and coagulopathies are at high risk for developing SPH. A simple nomogram tool helps in the early, accurate prediction of SPH.
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Affiliation(s)
- Chen Yu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China.,Jiangxi Province Medical Imaging Research Institute, Nanchang, China
| | - Ling Ding
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Meilan Jiang
- Gaoxin Hospital of the First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qian Liao
- Jiangxi Province Medical Imaging Research Institute, Nanchang, China.,Department of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xin Huang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yupeng Lei
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Huajing Ke
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Huifang Xiong
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wenhua He
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Liang Xia
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xianjun Zeng
- Jiangxi Province Medical Imaging Research Institute, Nanchang, China.,Department of Radiology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Nonghua Lu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yin Zhu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
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Huang X, Xu X, Ke H, Pan X, Ai J, Xie R, Lan G, Hu Y, Wu Y. microRNA-16-5p suppresses cell proliferation and angiogenesis in colorectal cancer by negatively regulating forkhead box K1 to block the PI3K/Akt/mTOR pathway. Eur J Histochem 2022; 66. [PMID: 35536149 PMCID: PMC9134092 DOI: 10.4081/ejh.2022.3333] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 03/23/2022] [Indexed: 12/15/2022] Open
Abstract
MicroRNAs (miRNAs/miRs) have aroused increasing attention in colorectal cancer (CRC) therapy. This study is designed for a detailed analysis of the roles of miR-16-5p and forkhead box K1 (FOXK1) in cell angiogenesis and proliferation during CRC in addition to their underlying mechanisms. CRC tissues and colon cancer cell lines (SW620 and HCT8) were investigated. qRT-PCR and Western blot were utilized to evaluate miR-16-5p and FOXK1 expression. Following gain- and loss-of-function assays on miR-16-5p or FOXK1, the effects of miR-16-5p and FOXK1 were assessed on cell angiogenesis and proliferation in CRC cells. A dual-luciferase reporter assay was employed to evaluate the binding relationship of miR-16-5p and FOXK1. Western blot was used to determine the effects of miR-16-5p and FOXK1 on key molecules of the PI3K/Akt/mTOR pathway. Highly expressed FOXK1 and lowly expressed miR-16-5p were observed in CRC cells and tissues. miR-16-5p overexpression or FOXK1 knockdown reduced CRC cell proliferation and angiogenesis of human umbilical vein endothelial cells co-cultured with the supernatant of CRC cells, whereas miR-16-5p silencing or FOXK1 upregulation caused opposite trends. Additionally, miR-16-5p negatively modulated FOXK1 expression. The blockade of the PI3K/Akt/mTOR pathway was triggered by miR-16-5p overexpression or FOXK1 silencing. In conclusion, miR-16-5p hampers cell angiogenesis and proliferation during CRC by targeting FOXK1 to block the PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Xin Huang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Jiangxi Clinical Research Center for Gastroenterology, Nanchang.
| | - Xuan Xu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Jiangxi Clinical Research Center for Gastroenterology, Nanchang.
| | - Huajing Ke
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Jiangxi Clinical Research Center for Gastroenterology, Nanchang.
| | - Xiaolin Pan
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Jiangxi Clinical Research Center for Gastroenterology, Nanchang.
| | - Jiaoyu Ai
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Jiangxi Clinical Research Center for Gastroenterology, Nanchang.
| | - Ruyi Xie
- Department of Gastroenterology, The Second Affiliated Hospital of Nanchang University, Jiangxi Clinical Research Center for Gastroenterology, Nanchang.
| | - Guilian Lan
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Jiangxi Clinical Research Center for Gastroenterology, Nanchang.
| | - Yang Hu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Jiangxi Clinical Research Center for Gastroenterology, Nanchang.
| | - Yao Wu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Jiangxi Clinical Research Center for Gastroenterology, Nanchang.
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11
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Xiao DK, Chen YM, Xu WJ, Zhan LT, Ke H, Li K. Biochemical-thermal-hydro-mechanical coupling model for aerobic degradation of landfilled municipal solid waste. Waste Manag 2022; 144:144-152. [PMID: 35364520 DOI: 10.1016/j.wasman.2022.03.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Revised: 01/26/2022] [Accepted: 03/20/2022] [Indexed: 06/14/2023]
Abstract
Ventilating solid waste landfills with an oxygen supply can effectively accelerate the degradation of waste, achieve rapid stabilization, and realize the sustainable utilization of landfills. Aiming to understand and verify the aerobic degradation process in landfills, this paper proposed a biochemical-thermal-hydro-mechanical coupling model. The model considers aerobic biochemical reactions, dissolved solute migration, heat transport, two-phase flow, and skeleton deformation. The model was verified by comparison with an in-situ experiment at Jinkou landfill. The results showed the model could accurately represent the observed degradation phenomena during the experiment. The modelling results indicated that the rate of temperature increase and peak temperature of the upper layer, which were lower than those of the middle layer, were affected by heat exchange at the landfill surface. The lowest temperatures occurred near the bottom because of high water content and low oxygen concentrations. The high temperature zone migrated out from the injection well during degradation, reflecting the degradation of degradable organic matter associated with oxygen diffusion rates and aerobic degradation reactions. The initial accumulated settlement value was fast, but slowed and finally stabilized. The surface subsidence also developed from the center around the injection well to the surrounding area, and 70% of the total subsidence occurred within 150 days. This newly developed model provides a theoretical framework for analyzing the multi-field coupling of aerobic degradation of landfilled municipal solid waste (MSW).
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Affiliation(s)
- D K Xiao
- MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China; Center for Hypergravity Experimental and Interdisciplinary Research, Zhejiang University, Hangzhou 310058, China
| | - Y M Chen
- MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China; Center for Hypergravity Experimental and Interdisciplinary Research, Zhejiang University, Hangzhou 310058, China
| | - W J Xu
- MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China; Center for Hypergravity Experimental and Interdisciplinary Research, Zhejiang University, Hangzhou 310058, China.
| | - L T Zhan
- MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China; Center for Hypergravity Experimental and Interdisciplinary Research, Zhejiang University, Hangzhou 310058, China
| | - H Ke
- MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China; Center for Hypergravity Experimental and Interdisciplinary Research, Zhejiang University, Hangzhou 310058, China
| | - K Li
- MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Hangzhou 310058, China; Center for Hypergravity Experimental and Interdisciplinary Research, Zhejiang University, Hangzhou 310058, China
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12
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He W, Chen P, Lei Y, Xia L, Liu P, Zhu Y, Zeng H, Wu Y, Ke H, Huang X, Cai W, Sun X, Huang W, Sutton R, Zhu Y, Lu N. Randomized controlled trial: neostigmine for intra-abdominal hypertension in acute pancreatitis. Crit Care 2022; 26:52. [PMID: 35241135 PMCID: PMC8892692 DOI: 10.1186/s13054-022-03922-4] [Citation(s) in RCA: 7] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Accepted: 01/30/2022] [Indexed: 02/08/2023] Open
Abstract
Background Intra-abdominal hypertension (IAH) in acute pancreatitis (AP) is associated with deterioration in organ function. This trial aimed to assess the efficacy of neostigmine for IAH in patients with AP. Methods In this single-center, randomized trial, consenting patients with IAH within 2 weeks of AP onset received conventional treatment for 24 h. Patients with sustained intra-abdominal pressure (IAP) ≥ 12 mmHg were randomized to receive intramuscular neostigmine (1 mg every 12 h increased to every 8 h or every 6 h, depending on response) or continue conventional treatment for 7 days. The primary outcome was the percent change of IAP at 24 h after randomization. Results A total of 80 patients were recruited to neostigmine (n = 40) or conventional treatment (n = 40). There was no significant difference in baseline parameters. The rate of decrease in IAP was significantly faster in the neostigmine group compared to the conventional group by 24 h (median with 25th–75th percentile: −18.7% [− 28.4 to − 4.7%] vs. − 5.4% [− 18.0% to 0], P = 0.017). This effect was more pronounced in patients with baseline IAP ≥ 15 mmHg (P = 0.018). Per-protocol analysis confirmed these results (P = 0.03). Stool volume was consistently higher in the neostigmine group during the 7-day observational period (all P < 0.05). Other secondary outcomes were not significantly different between neostigmine and conventional treatment groups. Conclusion Neostigmine reduced IAP and promoted defecation in patients with AP and IAH. These results warrant a larger, placebo-controlled, double-blind phase III trial. Trial registration Clinical Trial No: NCT02543658 (registered August /27, 2015). Supplementary Information The online version contains supplementary material available at 10.1186/s13054-022-03922-4.
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Affiliation(s)
- Wenhua He
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China.,Liverpool Pancreatitis Research Group, Institute of Systems, Molecular and Integrative Biology, University of Liverpool and Liverpool University Hospitals NHS Foundation Trust, Liverpool, Merseyside, UK
| | - Peng Chen
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yupeng Lei
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Liang Xia
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Pi Liu
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yong Zhu
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hao Zeng
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yao Wu
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Huajing Ke
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xin Huang
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wenhao Cai
- Liverpool Pancreatitis Research Group, Institute of Systems, Molecular and Integrative Biology, University of Liverpool and Liverpool University Hospitals NHS Foundation Trust, Liverpool, Merseyside, UK.,Departments of Integrated Traditional Chinese and Western Medicine & Clinical Research Management, Sichuan Provincial Pancreatitis Center & West China-Liverpool Biomedical Research Center, West China Hospital, Sichuan University, Chengdu, China
| | - Xin Sun
- Chinese Evidence-Based Medicine Center and CREAT Group, West China Hospital, Sichuan University, Chengdu, China
| | - Wei Huang
- Departments of Integrated Traditional Chinese and Western Medicine & Clinical Research Management, Sichuan Provincial Pancreatitis Center & West China-Liverpool Biomedical Research Center, West China Hospital, Sichuan University, Chengdu, China
| | - Robert Sutton
- Liverpool Pancreatitis Research Group, Institute of Systems, Molecular and Integrative Biology, University of Liverpool and Liverpool University Hospitals NHS Foundation Trust, Liverpool, Merseyside, UK
| | - Yin Zhu
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China.
| | - Nonghua Lu
- Pancreatic Intensive Care Unit, Department of Gastroenterology, First Affiliated Hospital of Nanchang University, Nanchang, China.
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13
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Ding L, He C, Li X, Huang X, Lei Y, Ke H, Chen H, Yang Q, Cai Y, Liao Y, He W, Xia L, Xiong H, Lu N, Zhu Y. Efficacy and Safety of Faecal Microbiota Transplantation for Acute Pancreatitis: A Randomised, Controlled Study. Front Med (Lausanne) 2022; 8:772454. [PMID: 35083238 PMCID: PMC8784600 DOI: 10.3389/fmed.2021.772454] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 09/13/2021] [Accepted: 12/16/2021] [Indexed: 12/11/2022] Open
Abstract
Aims: We investigated whether faecal microbiota transplantation (FMT) decreases intra-abdominal pressure (IAP) and improves gastrointestinal (GI) dysfunction and infectious complications in acute pancreatitis (AP). Methods: In this first randomised, single-blind, parallel-group, controlled study, we recruited and enrolled consecutive patients with AP complicated with GI dysfunction. Eligible participants were randomly assigned to receive faecal transplant (n = 30) or normal saline (n = 30) via a nasoduodenal tube once and then again 2 days later. The primary endpoint was the rate of IAP decline; secondary endpoints were GI function, infectious complications, organ failure, hospital stay and mortality. Analyses were based on intention to treat. Results: We enrolled 60 participants and randomly assigned them to the FMT (n = 30) or control (n = 30) group. Baseline characteristics and disease severity were similar for both groups. IAP decreased significantly 1 week after intervention in both groups, with no difference in the IAP decline rate between FMT and Control group [0.1 (-0.6, 0.5) vs. 0.2 (-0.2, 0.6); P = 0.27]. Normal gastrointestinal failure (GIF) scores were achieved in 12 (40%) patients in the FMT group and 14 (47%) in the control group, with no significant difference (P = 0.60). However, D-lactate was significantly elevated in the FMT group compared to the control group, as calculated by the rate of decline [-0.3 (-3.7, 0.8) vs. 0.4 (-1.1, 0.9); P = 0.01]. Infectious complications occurred in 15 (50%) and 16 (53.33%) patients in the FMT and control groups, respectively (P = 0.80). However, interleukin-6 (IL-6) was significantly elevated in the FMT group compared to the control group, as calculated by the rate of decline [0.4 (-3.6, 0.9) vs. 0.8 (-1.7, 1.0); P = 0.03]. One participant experienced transient nausea immediately after FMT, but no serious adverse events were attributed to FMT. Conclusion: FMT had no obvious effect on IAP and infectious complications in AP patients, though GI barrier indictors might be adversely affected. Further multi-centre studies are needed to confirm our findings. The study was registered at https://clinicaltrials.gov (NCT02318134).
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Affiliation(s)
- Ling Ding
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Cong He
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xueyang Li
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Xin Huang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yupeng Lei
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Huajing Ke
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Hongyan Chen
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Qinyu Yang
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yan Cai
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yuanhang Liao
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Wenhua He
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Liang Xia
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Huifang Xiong
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Nonghua Lu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
| | - Yin Zhu
- Department of Gastroenterology, The First Affiliated Hospital of Nanchang University, Nanchang, China
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14
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Wan J, Cui J, Guang Jiao S, Zhao S, Liu M, Li QT, Chen SY, Wang L, Ke H. Inhibition of Axl: Enhancement of Erlotinib Cytotoxicity in Human Pancreatic Cancer Cells. Indian J Pharm Sci 2022. [DOI: 10.36468/pharmaceutical-sciences.spl.532] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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15
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Ke H, Xu C, Wang W, Zhang Q, Zhuang W, Zhu Y, Huang Y, Chen G, Fang M, Lv T, Song Y. EP1.03-17 Outcomes of Molecular Characteristics in Chinese BAP1-Mutant Non-Small Cell Lung Cancer Patients. J Thorac Oncol 2019. [DOI: 10.1016/j.jtho.2019.08.2098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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16
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Almirall N, Wells PB, Ke H, Edmondson P, Morgan D, Yamamoto T, Odette GR. On the Elevated Temperature Thermal Stability of Nanoscale Mn-Ni-Si Precipitates Formed at Lower Temperature in Highly Irradiated Reactor Pressure Vessel Steels. Sci Rep 2019; 9:9587. [PMID: 31270423 PMCID: PMC6610118 DOI: 10.1038/s41598-019-45944-z] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2019] [Accepted: 06/19/2019] [Indexed: 11/17/2022] Open
Abstract
Atom probe tomography (APT) and scanning transmission electron microscopy (STEM) techniques were used to probe the long-time thermal stability of nm-scale Mn-Ni-Si precipitates (MNSPs) formed in intermediate and high Ni reactor pressure vessel steels under high fluence neutron irradiation at ≈320 °C. Post irradiation annealing (PIA) at 425 °C for up to 57 weeks was used to determine if the MNSPs are: (a) non-equilibrium solute clusters formed and sustained by radiation induced segregation (RIS); or, (b) equilibrium G or Γ2 phases, that precipitate at accelerated rates due to radiation enhanced diffusion (RED). Note the latter is consistent with both thermodynamic models and x-ray diffraction (XRD) measurements. Both the experimental and an independently calibrated cluster dynamics (CD) model results show that the stability of the MNSPs is very sensitive to the alloy Ni and, to a lesser extent, Mn content. Thus, a small fraction of the largest MNSPs in the high Ni steel persist, and begin to coarsen at long times. These results suggest that the MNSPs remain a stable phase, even at 105 °C higher than they formed at, thus are most certainly equilibrium phases at much lower service relevant temperatures of ≈290 °C.
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Affiliation(s)
- N Almirall
- Materials Department, University of California, Santa Barbara, CA, 93106, USA
| | - P B Wells
- Materials Department, University of California, Santa Barbara, CA, 93106, USA.,Intel Corporation, Hillsboro, OR, 97124, USA
| | - H Ke
- Department of Materials Science and Engineering Department, University of Wisconsin, Madison, WI, 53706, USA.,Materials Science and Engineering Department, Ohio State University, Columbus, OH, 43210, USA
| | - P Edmondson
- Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN, 37831, USA
| | - D Morgan
- Department of Materials Science and Engineering Department, University of Wisconsin, Madison, WI, 53706, USA
| | - T Yamamoto
- Materials Department, University of California, Santa Barbara, CA, 93106, USA
| | - G R Odette
- Materials Department, University of California, Santa Barbara, CA, 93106, USA.
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17
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Abstract
PURPOSE This study aimed to elucidate the molecular mechanisms of the anti-pancreatic fibrosis effects of matrine in rats. MATERIALS AND METHODS Trinitrobenzene sulfonic acid was administrated to rats to establish a pancreatic fibrosis model. Rats were divided into four groups: Control, Sham, Model, and Matrine (n=8). Hematoxylin-eosin staining, Masson staining, and Azan staining were performed to evaluate pancreatic fibrosis. Expression of transforming growth factor-β1 (TGF-β1), α-smooth muscle actin (α-SMA), and collagen I in pancreatic tissues was evaluated by immunohistochemical staining. mRNA and protein levels of TGF-β receptor 1 (TβR1), TβR2, and Smad2 in pancreatic tissues were determined by RT-PCR and Western blot, respectively. RESULTS In the model group, hyperplasia of glandules around the glandular ducts, mitochondrial swelling of acinous cells, and severe fibrosis were found. Interestingly, in the Matrine group, mitochondrial swelling was only found in a small number of acinous cells, and the fundamental structures of pancreatic tissues were intact. Moreover, pancreatic fibrosis was markedly alleviated. Comparing to the Sham group, expression of α-SMA, TGF-β1, and collagen I was sharply elevated in the Model group (p<0.05); however, their expressions were much lower in the Matrine group, compared to the Model group (p<0.05). Compared with the Sham group, mRNA and protein levels of Smad2, TβR1, and TβR2 in the Model group were notably raised (p<0.05). However, their high expression was significantly downregulated in the Matrine group (p<0.05). CONCLUSION Matrine suppressed pancreatic fibrosis by regulating TGF-β/Smad signaling in rats.
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Affiliation(s)
- Pi Liu
- Department of Gastroenterology, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China.
| | - Luhong Zhu
- Department of Gastroenterology, Nanchang University, Nanchang, Jiangxi, China
| | - Guohui Zou
- Department of Gastroenterology, Chinese People's Liberation Army No.171 Hospital, Jiujiang, Jiangxi, China
| | - Huajing Ke
- Department of Gastroenterology, the First Affiliated Hospital of Nanchang University, Nanchang, Jiangxi, China
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18
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Ni J, El-Ansary D, Heiberg J, Shen G, You Q, Gao Y, Liu K, Ke H, Royse CF. Validation of a revised Mandarin Chinese language version of the Postoperative Quality of Recovery Scale. Anaesth Intensive Care 2018; 46:278-289. [PMID: 29716486 DOI: 10.1177/0310057x1804600305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [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: 11/17/2022]
Abstract
The aim of the study was to validate a revised Mandarin version of the Postoperative Quality of Recovery Scale (PostopQRS) and to apply the revised version in a Chinese population. In a prospective design, bilingual volunteers completed the scale at baseline, day one, day seven, and day 14 in both languages, with the order of language and parallel forms randomised. In addition, lung cancer patients undergoing open or video-assisted thoracoscopic surgery (VATS) completed the Mandarin version prior to surgery, day one, day three, day seven, day 14, one month, and three months postoperatively. Sixty-eight volunteers participated in the validation part of the study and in the clinical application, 93 lung cancer patients were included. The scores in the Mandarin version were equal to the English version in all domains at all timepoints including the word generation task, when the Mandarin morpheme was included in any part of the Mandarin word. However, Mandarin scores were lower in the word generation task if the morpheme was only included in the first part of the word. In addition, the Mandarin version was able to identify lower rates of overall recovery (<i>P</i> <0.01), nociceptive (<i>P</i> <0.01), emotive (<i>P</i> <0.01), and activities of daily living recovery (<i>P</i>=0.02) after open surgery compared to after VATS. The revised Mandarin version is equivalent to the English version for the cognitive domain, if morpheme substitution for the word generation task is allowed as any part of the word, and it is able to discriminate quality of recovery in Chinese patients.
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Affiliation(s)
- J Ni
- Associate Professor of Rehabilitation, Department of Rehabilitation Medicine, The Affiliated Hospital of Nantong University; Nantong University; Nantong, China
| | - D El-Ansary
- Associate Professor and Director of Physiotherapy, Faculty of Health Sciences, Swinburne University; Honorary Senior Research Fellow, Department of Surgery, School of Medicine, The University of Melbourne; Melbourne, Victoria
| | - J Heiberg
- Research Fellow, Department of Anaesthesia and Pain Management, Royal Melbourne Hospital; Department of Surgery, University of Melbourne; Melbourne, Victoria
| | - G Shen
- Professor, Department of Rehabilitation Medicine, The Affiliated Hospital of Nantong University; Department of Rehabilitation Medicine, Nantong University; Nantong, China
| | | | | | | | | | - C F Royse
- Consultant Anaesthetist, Department of Anaesthesia and Pain Management, Royal Melbourne Hospital; Professor, Department of Surgery, University of Melbourne; Melbourne, Victoria
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Liu M, Kurimoto P, Zhang J, Niu QT, Stolina M, Dechow PC, Feng JQ, Hesterman J, Silva MD, Ominsky MS, Richards WG, Ke H, Kostenuik PJ. Sclerostin and DKK1 Inhibition Preserves and Augments Alveolar Bone Volume and Architecture in Rats with Alveolar Bone Loss. J Dent Res 2018; 97:1031-1038. [PMID: 29617179 DOI: 10.1177/0022034518766874] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [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: 12/15/2022] Open
Abstract
Alveolar bone is a mechanosensitive tissue that provides structural support for teeth. Alveolar bone loss is common with aging, menopause, tooth loss, and periodontitis and can lead to additional tooth loss, reduced denture fixation, and challenges in placing dental implants. The current studies suggest that sclerostin and DKK1, which are established osteocyte-derived inhibitors of bone formation, contribute to alveolar bone loss associated with estrogen ablation and edentulism in rats. Estrogen-deficient ovariectomized rats showed significant mandibular bone loss that was reversed by systemic administration of sclerostin antibody (SAB) alone and in combination with DKK1 antibody (DAB). Osteocytes in the dentate and edentulous rat maxilla expressed Sost (sclerostin) and Dkk1 (DKK1) mRNA, and molar extraction appeared to acutely increase DKK1 expression. In a chronic rat maxillary molar extraction model, systemic SAB administration augmented the volume and height of atrophic alveolar ridges, effects that were enhanced by coadministering DAB. SAB and SAB+DAB also fully reversed bone loss that developed in the opposing mandible as a result of hypo-occlusion. In both treatment studies, alveolar bone augmentation with SAB or SAB+DAB was accompanied by increased bone mass in the postcranial skeleton. Jaw bone biomechanics showed that intact sclerostin-deficient mice exhibited stronger and denser mandibles as compared with wild-type controls. These studies show that sclerostin inhibition, with and without DKK1 coinhibition, augmented alveolar bone volume and architecture in rats with alveolar bone loss. These noninvasive approaches may have utility for the conservative augmentation of alveolar bone.
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Affiliation(s)
- M Liu
- 1 Department of Cardiometabolic and Bone Disorders, Amgen Inc., Thousand Oaks, CA, USA
| | - P Kurimoto
- 1 Department of Cardiometabolic and Bone Disorders, Amgen Inc., Thousand Oaks, CA, USA
| | - J Zhang
- 1 Department of Cardiometabolic and Bone Disorders, Amgen Inc., Thousand Oaks, CA, USA.,Merck Research Labs, South San Francisco, CA, USA
| | - Q T Niu
- 1 Department of Cardiometabolic and Bone Disorders, Amgen Inc., Thousand Oaks, CA, USA
| | - M Stolina
- 1 Department of Cardiometabolic and Bone Disorders, Amgen Inc., Thousand Oaks, CA, USA
| | - P C Dechow
- 2 Baylor College of Dentistry, Texas A&M University, Dallas, TX, USA
| | - J Q Feng
- 2 Baylor College of Dentistry, Texas A&M University, Dallas, TX, USA
| | | | | | - M S Ominsky
- 1 Department of Cardiometabolic and Bone Disorders, Amgen Inc., Thousand Oaks, CA, USA.,Radius Health Inc., Waltham, MA, USA
| | - W G Richards
- 1 Department of Cardiometabolic and Bone Disorders, Amgen Inc., Thousand Oaks, CA, USA
| | - H Ke
- 1 Department of Cardiometabolic and Bone Disorders, Amgen Inc., Thousand Oaks, CA, USA.,4 UCB Pharma, Slough, UK
| | - P J Kostenuik
- 1 Department of Cardiometabolic and Bone Disorders, Amgen Inc., Thousand Oaks, CA, USA.,Phylon Pharma Services, Newbury Park, CA, USA, and School of Dentistry, University of Michigan, Ann Arbor, MI, USA
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Yao W, Dai W, Jiang L, Lay EYA, Zhong Z, Ritchie RO, Li X, Ke H, Lane NE. Sclerostin-antibody treatment of glucocorticoid-induced osteoporosis maintained bone mass and strength. Osteoporos Int 2016; 27:283-294. [PMID: 26384674 PMCID: PMC4958115 DOI: 10.1007/s00198-015-3308-6] [Citation(s) in RCA: 79] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/11/2015] [Accepted: 08/25/2015] [Indexed: 12/18/2022]
Abstract
UNLABELLED This study was to determine if antibody against sclerostin (Scl-Ab) could prevent glucocorticoid (GC)-induced osteoporosis in mice. We found that Scl-Ab prevented GC-induced reduction in bone mass and bone strength and that the anabolic effects of Scl-Ab might be partially achieved through the preservation of osteoblast activity through autophagy. INTRODUCTION Glucocorticoids (GCs) inhibit bone formation by altering osteoblast and osteocyte cell activity and lifespan. A monoclonal antibody against sclerostin, Scl-Ab, increased bone mass in both preclinical animal and clinical studies in subjects with low bone mass. The objectives of this study were to determine if treatment with the Scl-Ab could prevent loss of bone mass and strength in a mouse model of GC excess and to elucidate if Scl-Ab modulated bone cell activity through autophagy. METHODS We generated reporter mice that globally expressed dsRed fused to LC3, a protein marker for autophagosomes, and evaluated the dose-dependent effects of GCs (0, 0.8, 2.8, and 4 mg/kg/day) and Scl-Ab on autophagic osteoblasts, bone mass, and bone strength. RESULTS GC treatment at 2.8 and 4 mg/kg/day of methylprednisolone significantly lowered trabecular bone volume (Tb-BV/TV) at the lumbar vertebrae and distal femurs, cortical bone mass at the mid-shaft femur (FS), and cortical bone strength compared to placebo (PL). In mice treated with GC and Scl-Ab, Tb-BV/TV increased by 60-125 %, apparent bone strength of the lumbar vertebrae by 30-70 %, FS-BV by 10-18 %, and FS-apparent strength by 13-15 %, as compared to GC vehicle-treated mice. GC treatment at 4 mg/kg/day reduced the number of autophagic osteoblasts by 70 % on the vertebral trabecular bone surface compared to the placebo group (PL, GC 0 mg), and GC + Scl-Ab treatment. CONCLUSIONS Treatment with Scl-Ab prevented GC-induced reduction in both trabecular and cortical bone mass and strength and appeared to maintain osteoblast activity through autophagy.
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Affiliation(s)
- W. Yao
- Center for Musculoskeletal Health, Internal Medicine, University of California at Davis Medical Center, Sacramento, CA 95817, USA
| | - W. Dai
- Center for Musculoskeletal Health, Internal Medicine, University of California at Davis Medical Center, Sacramento, CA 95817, USA
- Science and Technology Experimental Center, Integrative Medicine Discipline, Longhua Hospital Shanghai University of Traditional Chinese Medicine, Shanghai 200032, China
| | - L. Jiang
- Center for Musculoskeletal Health, Internal Medicine, University of California at Davis Medical Center, Sacramento, CA 95817, USA
| | - E. Y.-A. Lay
- Center for Musculoskeletal Health, Internal Medicine, University of California at Davis Medical Center, Sacramento, CA 95817, USA
| | - Z. Zhong
- Center for Musculoskeletal Health, Internal Medicine, University of California at Davis Medical Center, Sacramento, CA 95817, USA
| | - R. O. Ritchie
- Department of Materials Science and Engineering, University of California at Berkeley, Berkeley, CA 94720, USA
| | - X. Li
- Department of Metabolic Disorders, Amgen Inc., Thousand Oaks, CA, USA
| | - H. Ke
- Department of Metabolic Disorders, Amgen Inc., Thousand Oaks, CA, USA
| | - N. E. Lane
- Center for Musculoskeletal Health, Internal Medicine, University of California at Davis Medical Center, Sacramento, CA 95817, USA
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Ma YP, Liu ZX, Hao L, Ma JY, Liang ZL, Li YG, Ke H. Analysing codon usage bias of cyprinid herpesvirus 3 and adaptation of this virus to the hosts. J Fish Dis 2015; 38:665-673. [PMID: 25491502 DOI: 10.1111/jfd.12316] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/17/2014] [Revised: 08/31/2014] [Accepted: 09/04/2014] [Indexed: 06/04/2023]
Abstract
The codon usage patterns of open reading frames (ORFs) in cyprinid herpesvirus 3 (CyHV-3) have been investigated in this study. The high correlation between GC12 % and GC3 % suggests that mutational pressure rather than natural selection is the main factor that determines the codon usage and base component in the CyHV-3, while mutational pressure effect results from the high correlation between GC3 % and the first principal axis of principle component analysis (Axis 1) on the relative synonymous codon usage (RSCU) value of the viral functional genes. However, the interaction between the absolute codon usage bias and GC3 % suggests that other selections take part in the formation of codon usage, except for the mutational pressure. It is noted that the similarity degree of codon usage between the CyHV-3 and goldfish, Carassius auratus (L.), is higher than that between the virus and common carp, Cyprinus carpio L., suggesting that the goldfish plays a more important role than the common carp in codon usage pattern of the CyHV-3. The study of codon usage in CyHV-3 can provide some evidence about the molecular evolution of the virus. It can also enrich our understanding about the relationship between the CyHV-3 and its hosts by analysing their codon usage patterns.
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Affiliation(s)
- Y P Ma
- Guangdong Public Laboratory of Veterinary Public Health, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Z X Liu
- Guangdong Public Laboratory of Veterinary Public Health, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - L Hao
- Guangdong Public Laboratory of Veterinary Public Health, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - J Y Ma
- Guangdong Public Laboratory of Veterinary Public Health, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Z L Liang
- Guangdong Public Laboratory of Veterinary Public Health, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
| | - Y G Li
- South China Agricultural University, Guangzhou, China
| | - H Ke
- Guangdong Public Laboratory of Veterinary Public Health, Institute of Animal Health, Guangdong Academy of Agricultural Sciences, Guangzhou, China
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Varotsos C, Ondov J, Tzanis C, Öztürk F, Nelson M, Ke H, Christodoulakis J. Corrigendum to “An observational study of the atmospheric ultra-fine particle dynamics” [Atmos. Environ. 59 (2012) 312–319]. Atmospheric Environment 2014; 94:817. [DOI: 10.1016/j.atmosenv.2014.05.052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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23
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Ke H, Chen SL, Chen X, Liu YD, Ye DS, He YX. Cumulative live birth rate after three ovarian stimulation IVF cycles for poor ovarian responders according to the Bologna criteria. Fertil Steril 2013. [DOI: 10.1016/j.fertnstert.2013.07.259] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Ominsky M, Li X, Warmington K, Niu QT, Asuncion F, Dwyer D, Grisanti M, Han CY, Kostenuik P, Stolina M, Ke H. THU0397 Increased Bone Mass and Bone Strength by Sclerostin Antibody (Scl-Ab) is Maintained by a RANKL Inhibitor in OVX Rats with Established Osteopenia. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.925] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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25
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Varotsos C, Ondov J, Tzanis C, Öztürk F, Nelson M, Ke H, Christodoulakis J. An observational study of the atmospheric ultra-fine particle dynamics. Atmospheric Environment 2012; 59:312-319. [DOI: 10.1016/j.atmosenv.2012.05.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
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26
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Longjiang M, Duowen M, Ke H, Jinghong Y. Distribution of the rare earth elements in the surface sediments from the lower Wuding River of China. J Radioanal Nucl Chem 2010. [DOI: 10.1007/s10967-010-0551-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Chen YM, Zhan TLT, Wei HY, Ke H. Aging and compressibility of municipal solid wastes. Waste Manag 2009; 29:86-95. [PMID: 18430560 DOI: 10.1016/j.wasman.2008.02.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/30/2007] [Revised: 01/20/2008] [Accepted: 02/08/2008] [Indexed: 05/26/2023]
Abstract
The expansion of a municipal solid waste (MSW) landfill requires the ability to predict settlement behavior of the existing landfill. The practice of using a single compressibility value when performing a settlement analysis may lead to inaccurate predictions. This paper gives consideration to changes in the mechanical compressibility of MSW as a function of the fill age of MSW as well as the embedding depth of MSW. Borehole samples representative of various fill ages were obtained from five boreholes drilled to the bottom of the Qizhishan landfill in Suzhou, China. Thirty-one borehole samples were used to perform confined compression tests. Waste composition and volume-mass properties (i.e., unit weight, void ratio, and water content) were measured on all the samples. The test results showed that the compressible components of the MSW (i.e., organics, plastics, paper, wood and textiles) decreased with an increase in the fill age. The in situ void ratio of the MSW was shown to decrease with depth into the landfill. The compression index, Cc, was observed to decrease from 1.0 to 0.3 with depth into the landfill. Settlement analyses were performed on the existing landfill, demonstrating that the variation of MSW compressibility with fill age or depth should be taken into account in the settlement prediction.
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Affiliation(s)
- Y M Chen
- MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering, Zhejiang University, Zheda Road #38, Hangzhou 310027, China
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Yeh H, Wu W, Yang S, Chang L, Lin H, Ke H, Li C, Huang C. MP-5.11: Increased Nuclear Factor-Kappa B Activation and Its Prognostic Significance in Human Upper Urinary Tract Transitional Cell Carcinoma. Urology 2008. [DOI: 10.1016/j.urology.2008.08.275] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Jie H, Ke H, Lihua T, Jiachun W, Zibin Z, Weiyong Y. Phase behavior and kinetics of polystyrene degradation in supercritical toluene. J Appl Polym Sci 2008. [DOI: 10.1002/app.28405] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Abstract
Dentin Matrix Protein 1 (DMP1) is highly expressed in alveolar bone and cementum, which are important components of the periodontium. Therefore, we hypothesized that Dmp1 is critical for the integrity of the periodontium, and that deletion may lead to increased susceptibility to disease. An early-onset periodontal defect was observed in the Dmp1 null mouse, a mouse model of hypophosphatemic rickets. The alveolar bone is porous, with increased proteoglycan expression. The cementum is also defective, as characterized by irregular, punctate fluorochrome labeling and elevated proteoglycan. The osteocyte and cementocyte lacuno-canalicular system of both alveolar bone and cementum is abnormal, with irregular lacunar walls and fewer canaliculi. As a consequence, there is significant interproximal alveolar bone loss, combined with detachment between the periodontal ligament (PDL) and cementum. We propose that defective alveolar bone and cementum may account for the periodontal breakdown and increased susceptibility to bacterial infection in Dmp1 null mice.
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Affiliation(s)
- L Ye
- Oral Biology, School of Dentistry, University of Missouri-Kansas City, Kansas City, MO 64108, USA.
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Gu Y, Zheng C, Zhao Y, Ke H, Fan H. A new iterative procedure for combining direct methods with solvent flattening - dealing with the phase ambiguity in protein crystallography. Acta Crystallogr D Biol Crystallogr 2005; 53:792-4. [PMID: 15299873 DOI: 10.1107/s090744499700680x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A new procedure for combining direct methods with the solvent-flattening technique is proposed for phasing single isomorphous replacement (SIR) or one-wavelength anomalous scattering (OAS) data of proteins. The new procedure differs from the previous one [Zheng, Zheng, Gu, Mo, Fan & Hao (1997). Acta Cryst. D53, 49-55] in that the direct method not only provides input phases to but also accepts feedback phases from solvent flattening, thus forming an iterative process for breaking the ambiguities and refining the values of phases. The new procedure was tested with the experimental SIR data of the known structure ribonuclease Sa. For the strongest 1000 of the total 7264 reflections, the mean F(obs)-weighted phase error is 7.5 and 9.4 degrees lower than that of the previous procedure and that of solvent flattening alone, respectively.
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Affiliation(s)
- Y Gu
- Institute of Physics, Chinese Academy of Science, Beijing, People's Republic of China
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Abstract
Phosphodiesterases (PDEs) control cellular concentrations of cyclic adenosine monophosphate (cAMP) or cyclic guanosine monophosphate (cGMP). PDE4 and PDE5 selectively hydrolyze cAMP and cGMP, respectively. PDE family members share approximately 25% sequence identity within a conserved catalytic domain of about 300 amino acids. Crystal structure analysis of PDE4's catalytic domain identifies two metal-binding sites: a high-affinity site and a low-affinity site, which probably bind zinc (Zn2+) and magnesium (Mg2+), respectively. Absolute conservation among the PDEs of two histidine and two aspartic acid residues for divalent metal binding suggests the importance of these amino acids in catalysis. Although active sites of PDEs are apparently structurally similar, PDE4 is specifically inhibited by selective inhibitors such as rolipram, while PDE5 is preferentially blocked by sildenafil. Modeling interactions of the PDE5 inhibitor sildenafil with the PDE4 active site may help explain inhibitor selectivity and provide useful information for the design of new inhibitors.
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Affiliation(s)
- H Ke
- Department of Biochemistry and Biophysics, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7260, USA
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34
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Zhang W, Ke H, Colman RW. Identification of interaction sites of cyclic nucleotide phosphodiesterase type 3A with milrinone and cilostazol using molecular modeling and site-directed mutagenesis. Mol Pharmacol 2002; 62:514-20. [PMID: 12181427 DOI: 10.1124/mol.62.3.514] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [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: 11/22/2022] Open
Abstract
To identify amino acid residues involved in PDE3-selective inhibitor binding, we selected eight presumed interacting residues in the substrate-binding pocket of PDE3A using a model created on basis of homology to the PDE4B crystal structure. We changed the residues to alanine using site-directed mutagenesis technique, expressed the mutants in a baculovirus/Sf9 cell system, and analyzed the kinetic characteristics of inhibition of the mutant enzymes by milrinone and cilostazol, specific inhibitors of PDE3. The mutants displayed differential sensitivity to the inhibitors. Mutants Y751A, D950A, and F1004A had reduced sensitivity to milrinone (K(i) changed from 0.66 microM for the recombinant PDE3A to 7.5 to 156 microM for the mutants), and diminished sensitivity to cilostazol (K(i) of the mutants were 18- to 371-fold higher than that of the recombinant PDE3A). In contrast, the mutants T844A, F972A and Q975A showed increased K(i) for cilostazol but no difference for milrinone from the recombinant PDE3A. Molecular models show that the PDE3 inhibitors cilostazol and milrinone share some of common residues but interact with distinct residues at the active site, suggesting that selective inhibitors can be designed with flexible size against PDE3 active site. Our study implies that highly conserved residuals Y751, D950 and F1004 in the PDE families are key residues for binding of both substrate and inhibitors, and nonconserved T844 may be responsible for the cilostazol selectivity of PDE3A. Detailed knowledge of the structure of inhibitory sites should contribute to development of more potent and specific inhibitory drugs.
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Affiliation(s)
- W Zhang
- The Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, Pennsylvania 19140, USA
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35
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Swapna GV, Shukla K, Huang YJ, Ke H, Xia B, Inouye M, Montelione GT. Resonance assignments for cold-shock protein ribosome-binding factor A (RbfA) from Escherichia coli. J Biomol NMR 2001; 21:389-390. [PMID: 11824762 DOI: 10.1023/a:1013302924843] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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36
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Huai Q, Xia Y, Chen Y, Callahan B, Li N, Ke H. Crystal structures of 1-aminocyclopropane-1-carboxylate (ACC) synthase in complex with aminoethoxyvinylglycine and pyridoxal-5'-phosphate provide new insight into catalytic mechanisms. J Biol Chem 2001; 276:38210-6. [PMID: 11431475 DOI: 10.1074/jbc.m103840200] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The structures of tomato 1-aminocyclopropane-1-carboxylate synthase (ACS) in complex with either cofactor pyridoxal-5'-phosphate (PLP) or both PLP and inhibitor aminoethoxyvinylglycine have been determined by x-ray crystallography. The structures showed good conservation of the catalytic residues, suggesting a similar catalytic mechanism for ACS and other PLP-dependent enzymes. However, the proximity of Tyr152 to the C-gamma-S bond of model substrate S-adenosylmethionine implies its critical role in the catalysis. The concerted accomplishment of catalysis by cofactor PLP and a protein residue, as proposed on the basis of the ACS structures in this paper, may represent a general scheme for the diversity of PLP-dependent catalyses. PLP-dependent enzymes have been categorized into four types of folds. A structural comparison revealed that a core fragment of ACS in fold type I is superimposable over tryptophan synthase beta subunit in fold type II and mouse ornithine decarboxylase in fold type III, thus suggesting a divergent evolution of PLP-dependent enzymes.
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Affiliation(s)
- Q Huai
- Department of Biochemistry and Biophysics and Lineberger Comprehensive Cancer Center, University of North Carolina, Chapel Hill, 27599-7260, USA
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37
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Huai Q, Colandene JD, Topal MD, Ke H. Structure of NaeI-DNA complex reveals dual-mode DNA recognition and complete dimer rearrangement. Nat Struct Biol 2001; 8:665-9. [PMID: 11473254 DOI: 10.1038/90366] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
NaeI, a novel DNA endonuclease, shows topoisomerase and recombinase activities when a Lys residue is substituted for Leu 43. The NaeI-DNA structure demonstrates that each of the two domains of NaeI recognizes one molecule of DNA duplex. DNA recognition induces dramatic rearrangements: narrowing the binding site of the Topo domain 16 A to grip DNA, widening that of the Endo domain 8 A to encircle and bend DNA 45 degrees for cleavage, and completely rebuilding the homodimer interface. The NaeI-DNA structure presents the first example of novel recognition of two copies of one DNA sequence by two different amino acid sequences and two different structural motifs in one polypeptide.
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MESH Headings
- Amino Acid Motifs
- Amino Acid Substitution/genetics
- Base Sequence
- Binding Sites
- Crystallography, X-Ray
- DNA/chemistry
- DNA/genetics
- DNA/metabolism
- DNA Topoisomerases, Type I/chemistry
- DNA Topoisomerases, Type I/genetics
- DNA Topoisomerases, Type I/metabolism
- DNA-Binding Proteins/chemistry
- DNA-Binding Proteins/genetics
- DNA-Binding Proteins/metabolism
- Deoxyribonucleases, Type II Site-Specific/chemistry
- Deoxyribonucleases, Type II Site-Specific/genetics
- Deoxyribonucleases, Type II Site-Specific/metabolism
- Dimerization
- Escherichia coli
- Hydrogen Bonding
- Models, Molecular
- Multienzyme Complexes/chemistry
- Multienzyme Complexes/genetics
- Multienzyme Complexes/metabolism
- Nucleic Acid Conformation
- Protein Binding
- Protein Structure, Quaternary
- Protein Structure, Tertiary
- Recombination, Genetic/genetics
- Substrate Specificity
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Affiliation(s)
- Q Huai
- Department of Biochemistry and Biophysics, The University of North Carolina, Chapel Hill, North Carolina 27599-7260, USA
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Zhang W, Ke H, Tretiakova AP, Jameson B, Colman RW. Identification of overlapping but distinct cAMP and cGMP interaction sites with cyclic nucleotide phosphodiesterase 3A by site-directed mutagenesis and molecular modeling based on crystalline PDE4B. Protein Sci 2001; 10:1481-9. [PMID: 11468344 PMCID: PMC2374088 DOI: 10.1110/ps.6601] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Cyclic nucleotide phosphodiesterase 3A (PDE3A) hydrolyzes cAMP to AMP, but is competitively inhibited by cGMP due to a low k(cat) despite a tight K(m). Cyclic AMP elevation is known to inhibit all pathways of platelet activation, and thus regulation of PDE3 activity is significant. Although cGMP elevation will inhibit platelet function, the major action of cGMP in platelets is to elevate cAMP by inhibiting PDE3A. To investigate the molecular details of how cGMP, a similar but not identical molecule to cAMP, behaves as an inhibitor of PDE3A, we constructed a molecular model of the catalytic domain of PDE3A based on homology to the recently determined X-ray crystal structure of PDE4B. Based on the excellent fit of this model structure, we mutated nine amino acids in the putative catalytic cleft of PDE3A to alanine using site-directed mutagenesis. Six of the nine mutants (Y751A, H840A, D950A, F972A, Q975A, and F1004A) significantly decreased catalytic efficiency, and had k(cat)/K(m) less than 10% of the wild-type PDE3A using cAMP as substrate. Mutants N845A, F972A, and F1004A showed a 3- to 12-fold increase of K(m) for cAMP. Four mutants (Y751A, H840A, D950A, and F1004A) had a 9- to 200-fold increase of K(i) for cGMP in comparison to the wild-type PDE3A. Studies of these mutants and our previous study identified two groups of amino acids: E866 and F1004 contribute commonly to both cAMP and cGMP interactions while N845, E971, and F972 residues are unique for cAMP and the residues Y751, H836, H840, and D950 interact with cGMP. Therefore, our results provide biochemical evidence that cGMP interacts with the active site residues differently from cAMP.
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Affiliation(s)
- W Zhang
- The Sol Sherry Thrombosis Research Center, Temple University School of Medicine, Philadelphia, Pennsylvania 19140, USA
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39
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Abstract
Escherichia coli contains a large CspA family, CspA to CspI. Here, we demonstrate that E. coli is highly protected against cold-shock stress, as these CspA homologues existed at approximately a total of two million molecules per cell at low temperature and growth defect was not observed until four csp genes (cspA, cspB, cspE and cspG) were deleted. The quadruple-deletion strain acquired cold sensitivity and formed filamentous cells at 15 degrees C although chromosomes were normally segregated. The cold-sensitivity and filamentation phenotypes were suppressed by all members of the CspA family except for CspD, which causes lethality upon overexpression. Interestingly, the cold sensitivity of the mutant was also suppressed by the S1 domain of polynucleotide phosphorylase (PNPase), which also folds into a beta-barrel structure similar to that of CspA. The present results show that cold-shock proteins and S1 domains share not only the tertiary structural similarity but also common functional properties, suggesting that these seemingly distinct protein categories may have evolved from a common primordial RNA-binding protein.
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Affiliation(s)
- B Xia
- Department of Biochemistry, UMDNJ-Robert Wood Johnson Medical School, 675 Hoes Lane, Piscataway, NJ 08854, USA
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Fox DS, Cruz MC, Sia RA, Ke H, Cox GM, Cardenas ME, Heitman J. Calcineurin regulatory subunit is essential for virulence and mediates interactions with FKBP12-FK506 in Cryptococcus neoformans. Mol Microbiol 2001; 39:835-49. [PMID: 11251806 DOI: 10.1046/j.1365-2958.2001.02295.x] [Citation(s) in RCA: 153] [Impact Index Per Article: 6.7] [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: 11/20/2022]
Abstract
Calcineurin is a Ca2+-calmodulin-regulated protein phosphatase that is the target of the immunosuppressive drugs cyclosporin A and FK506. Calcineurin is a heterodimer composed of a catalytic A and a regulatory B subunit. In previous studies, the calcineurin A homologue was identified and shown to be required for growth at 37 degrees C and hence for virulence of the pathogenic fungus Cryptococcus neoformans. Here, we identify the gene encoding the calcineurin B regulatory subunit and demonstrate that calcineurin B is also required for growth at elevated temperature and virulence. We show that the FKR1-1 mutation, which confers dominant FK506 resistance, results from a 6 bp duplication generating a two-amino-acid insertion in the latch region of calcineurin B. This mutation was found to reduce FKBP12-FK506 binding to calcineurin both in vivo and in vitro. Molecular modelling based on the FKBP12-FK506-calcineurin crystal structure illustrates how this mutation perturbs drug interactions with the phosphatase target. In summary, our studies reveal a central role for calcineurin B in virulence and antifungal drug action in the human fungal pathogen C. neoformans.
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Affiliation(s)
- D S Fox
- Department of Genetics, 322 CARL Bldg., Box 3546, Duke University Medical Center, Research Drive, Durham, NC 27710, USA
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Abstract
Leptin, the product of the obese gene, is a circulating hormone secreted primarily from adipocytes. The lack of leptin in ob/ob mice, who are homozygous for the obese gene, results in hyperglycemia, hyperinsulinemia, hyperphagia, obesity, infertility, decreased brain size and decreased stature. To this end, we investigated the role of leptin as a hormonal regulator of bone growth. Leptin administration led to a significant increase in femoral length, total body bone area, bone mineral content and bone density in ob/ob mice as compared to vehicle treated controls. The increase in total body bone mass was a result of an increase in both trabecular and cortical bone mass. These results suggest that the decreased stature of the ob/ob mouse is due to a developmental defect that is readily reversible upon leptin administration. Our demonstration that the signalling or long form (Ob-Rb) of the leptin receptor is present in both primary adult osteoblasts and chondrocytes suggests that the growth promoting effects of leptin could be direct. In summary, these results indicate a novel role for leptin in skeletal bone growth and development.
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Affiliation(s)
- C M Steppan
- Department of Metabolic Diseases, Pfizer Central Research, Eastern Point Road, 06340, Groton, CT, USA
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42
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Abstract
NAE:I is transformed from DNA endonuclease to DNA topoisomerase and recombinase by a single amino acid substitution. The crystal structure of NAE:I was solved at 2.3 A resolution and shows that NAE:I is a dimeric molecule with two domains per monomer. Each domain contains one potential DNA recognition motif corresponding to either endonuclease or topoisomerase activity. The N-terminal domain core folds like the other type II restriction endonucleases as well as lambda-exonuclease and the DNA repair enzymes MutH and Vsr, implying a common evolutionary origin and catalytic mechanism. The C-terminal domain contains a catabolite activator protein (CAP) motif present in many DNA-binding proteins, including the type IA and type II topoisomerases. Thus, the NAE:I structure implies that DNA processing enzymes evolved from a few common ancestors. NAE:I may be an evolutionary bridge between endonuclease and DNA processing enzymes.
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Affiliation(s)
- Q Huai
- Department of Biochemistry and Biophysics and Lineberger Comprehensive Cancer Center, The University of North Carolina, Chapel Hill, NC 27599-7260, USA
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Xu RX, Hassell AM, Vanderwall D, Lambert MH, Holmes WD, Luther MA, Rocque WJ, Milburn MV, Zhao Y, Ke H, Nolte RT. Atomic structure of PDE4: insights into phosphodiesterase mechanism and specificity. Science 2000; 288:1822-5. [PMID: 10846163 DOI: 10.1126/science.288.5472.1822] [Citation(s) in RCA: 280] [Impact Index Per Article: 11.7] [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: 11/02/2022]
Abstract
Cyclic nucleotides are second messengers that are essential in vision, muscle contraction, neurotransmission, exocytosis, cell growth, and differentiation. These molecules are degraded by a family of enzymes known as phosphodiesterases, which serve a critical function by regulating the intracellular concentration of cyclic nucleotides. We have determined the three-dimensional structure of the catalytic domain of phosphodiesterase 4B2B to 1.77 angstrom resolution. The active site has been identified and contains a cluster of two metal atoms. The structure suggests the mechanism of action and basis for specificity and will provide a framework for structure-assisted drug design for members of the phosphodiesterase family.
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Affiliation(s)
- R X Xu
- Department of Structural Chemistry, Department of Molecular Sciences, Glaxo Wellcome Research and Development, Research Triangle Park, NC 27709, USA
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44
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Abstract
Two types of pseudo-translation symmetry, pseudo-twofold translational symmetry and pseudo-body-centered symmetry, have been found in protein crystals of chorismate mutase and cyclophilin C. Statistics on diffraction intensity from these two crystals showed that the presence of pseudo-translations in atomic space yielded a distribution of systematically strong and weak reflections at low resolution. The diffraction pattern resulting from pseudo-translational symmetry was apparently similar to that from true crystallographic symmetry at 4 A resolution, but was distinct at high resolution. Pseudo-translation can be detected by comparing the average magnitudes of certain parity groups of reflections in three-dimensional hkl space. Based on the structures of chorismate mutase and cyclophilin C, the ratio of >1.2 for the average magnitudes of parity groups is sufficient to indicate the existence of pseudo-translation. Although pseudo-translation often makes structure determination more difficult, the additional information of pseudo-translation has been used successfully in the structure determination of chorismate mutase by multiple isomorphous replacement and of cyclophilin C by molecular replacement. Thus, examination of pseudo-translation is recommended at an early stage of structure determination.
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Affiliation(s)
- Y M Chook
- Laboratory of Cellular Biology, Howard Hughes Medical Institute, The Rockefeller University, 1230 York Avenue, New York, NY 10021, USA
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45
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Wang X, Ke H, Wang H. [A clinicopathological analysis in 46 elderly cases with cor pulmonale]. Zhonghua Jie He He Hu Xi Za Zhi 1997; 20:228-30. [PMID: 10072809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/11/2023]
Abstract
OBJECTIVE To recognize the successful experience in diagnosis of cor pulmonale. METHOD Autopsy records of 46 elderly patients with cor pulmonale were retrospectively analyzed. RESULTS The average age of cor pulmonale in aged patients is 65. Most patients were died in the age of 70-79. The rates of incorrect diagnosis and mis diagnoss of cor pulmonale in elderly patients were 27% and 6% respectively. Chronic bronchitis and chronic obstructive emphysema were the most commen causes of cor pulmonale in elderly patients with a rate of 84%. The main cause of death were respiratory failure and heart failure with a rate of 53%. The average thickness of right ventricle wall increased with the course of cor pulmonale and the age of death. About 41% cor pumonale cases were combined with coronary heart disease. CONCLUSIONS These results indicated that the rate of incorrect diagnoses of cor pulmonale in elderly patients was high, and great effort should be made to draw the clinician's attention for diagnose this illness correctly. The best way to reduce the incidence of cor pulmonale is to prevent and treat chronic bronchitis and chronic obstructive emphysema. Prevent and treat respiratory failure and heart failure effectively may decrease the mortality of cor pulmonale in elderly patients.
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46
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Abstract
BACKGROUND Cyclophilin A (CyPA), a receptor of the immunosuppressive drug cyclosporin A, catalyzes the cis-trans isomerization of peptidyl-prolyl bonds and is required for the infectious activity of human immunodeficiency virus type 1 (HIV-1). The crystal structure of CyPA complexed with a fragment of the HIV-1 gag protein should provide insights into the nature of CyPA-gag interactions and may suggest a role for CyPA in HIV-1 infectious activity. RESULTS The crystal structure of CyPA complexed with a 25 amino acid peptide of HIV-1 gag capsid protein (25-mer) was determined and refined to an R factor of 0.195 at 1.8 A resolution. The sequence Ala88-Gly89-Pro90-Ile91 of the gag fragment is the major portion to bind to the active site of CyPA. Two residues of the 25-mer (Pro90-Ile91) bind to CyPA in a similar manner to two residues (Pro-Phe) of the CyPA substrate, succinyl-Ala-Ala-Pro-Phe-p-nitroanilide (AAPF). However, the N-terminus of the 25-mer (Ala88-Gly89) exhibits a different hydrogen-bonding pattern and molecular conformation than AAPF. The peptidyl-prolyl bond between Gly89 and Pro90 of the 25-mer has a trans conformation, in contrast to the cis conformation observed in other known CyPA-peptide complexes. The residue preceding proline, Gly89, has an unfavorable backbone conformation usually only adopted by glycine. CONCLUSIONS The unfavorable backbone conformation of Gly89 of the gag 25-mer fragment suggests that binding between HIV-1 gag protein and CyPA requires a special sequence, Gly-Pro. Thus, in HIV-1 infectivity, CyPA is likely to function as a chaperone, rather than as a cis-trans isomerase. However, the observation of similarities between the C termini of the 25-mer and the substrate AAPF means that the involvement of the cis-trans isomerase activity of CyPA cannot be completely ruled out.
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Affiliation(s)
- Y Zhao
- Department of Biochemistry and Biophysics, School of Medicine, The University of North Carolina, Chapel Hill, NC 27599, USA
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Abstract
p21, a universal inhibitor of mammalian cyclin-dependent kinases (CDK), regulates cell cycle progression by forming various distinct protein complexes with cyclins, CDKs, and the proliferating cell nuclear antigen. We have overexpressed recombinant human p21 in E. coli and purified active p21 to near homogeneity on a large scale. Crystals of recombinant p21 have been grown in the space group P2(1) a = 157.4, b = 152.7, c = 90.6 A, and beta = 92.7 degrees. The diffraction data of the recombinant p21 have been collected to 2.5 and 3.5 A resolution for the native crystal and two heavy atom derivatives of mercury and iridium.
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Affiliation(s)
- D R Mayrose
- Department of Biochemistry, University of North Carolina at Chapel Hill 27599-7260, USA
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48
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Jarchow S, Ke H. Preliminary crysallization of a cyclin-dependent kinase inhibitor: P18. Acta Crystallogr A 1996. [DOI: 10.1107/s0108767396089982] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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49
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Zhao Y, Ke H. Crystal structures of cyclophilin A complexed with proline-containing dipeptides and tetrapeptide. Acta Crystallogr A 1996. [DOI: 10.1107/s0108767396094342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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50
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Luo F, Ke H. Preliminary structure characterisation of human acid β-glucosidase. Acta Crystallogr A 1996. [DOI: 10.1107/s0108767396091490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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