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Du LM, Hu SJ, Chen XM, Deng YY, Yong HL, Shi RC, Liu JG, Cao ZZ, You YJ, Liu YX, Ma SC, Ma LK, Li XF, Li XM, Hou JB, Ye ZC, Sang T, Cao Y, Liu H, Wei XX, Hu AL, Li YL, Gao HJ. [Survey of Helicobacter pylori levofloxacin and clarithromycin resistance rates and drug resistance genes in Ningxia, 2020-2022]. Zhonghua Yi Xue Za Zhi 2023; 103:2163-2167. [PMID: 37482728 DOI: 10.3760/cma.j.cn112137-20230214-00206] [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] [Subscribe] [Scholar Register] [Indexed: 07/25/2023]
Abstract
Objective: To explore the rate of Helicobacter pylori (Hp) resistance to levofloxacin and clarithromycin and the common mutation patterns of resistance genes in Ningxia, and to assess the concordance between phenotypic resistance and genotypic resistance. Methods: Cross-sectional study. Patients diagnosed with Hp infection in 14 hospitals in Ningxia region from February 2020 to May 2022 were retrospectively selected. Hp strains were isolated from gastric biopsy specimens of Hp-infected patients and subjected to phenotypic drug sensitivity testing and detection of resistance genes to analyze the rate of Hp resistance to levofloxacin and clarithromycin and the common mutation patterns of resistance genes in Ningxia region; and the concordance rate and Kappa concordance test were used to assess the concordance between phenotypic resistance and genotypic resistance. Results: A total of 1 942 Hp strains were isolated and cultured, and among the infections, 1 069 cases (55.0%) were male and 873 cases (45.0%) were female, aged (50.0±12.5) years (15-86 years). The rates of Hp resistance to levofloxacin and clarithromycin in Ningxia were 42.1% (818/1 942) and 40.1% (779/1 942), respectively, and the rate of dual resistance to both was 22.8% (443/1 942). The rate of resistance to levofloxacin and clarithromycin of Hp strains from female patients was higher than in male patients (levofloxacin: 50.4%(440/873) vs 35.4%(378/1 069); clarithromycin: 44.4%(388/873) vs 36.6%(391/1 069), both P<0.001). Among the GyrA gene mutations associated with levofloxacin resistance, the differences in mutation rate of amino acid at positions 87 and 91 were statistically significant in both drug-resistant and sensitive strains(both P<0.001), except for Asn87Thr. Hp strains were statistically significant for levofloxacin (Kappa=0.834, P<0.001) and clarithromycin (Kappa=0.829, P<0.001) had good concordance in resistance at the phenotypic and genotypic levels. Conclusion: The resistance of Hp to levofloxacin and clarithromycin in Ningxia region is severe, and there is good consistency between genotypic and phenotypic resistance.
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Affiliation(s)
- L M Du
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - S J Hu
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - X M Chen
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - Y Y Deng
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - H L Yong
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - R C Shi
- Department of Gastroenterology, Wuzhong People's Hospital, Wuzhong 751199, China
| | - J G Liu
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - Z Z Cao
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - Y J You
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - Y X Liu
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - S C Ma
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - L K Ma
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - X F Li
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - X M Li
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - J B Hou
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - Z C Ye
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - T Sang
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - Y Cao
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - H Liu
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - X X Wei
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - A L Hu
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - Y L Li
- Department of Gastroenterology, the Third Clinical Medical College of Ningxia Medical University, Ningxia Hui Autonomous Region People's Hospital, Yinchuan 750002, China
| | - H J Gao
- Department of Gastroenterology, Tongji Hospital, Tongji University, Institute of Digestive Disease, School of Medicine, Tongji University, Shanghai 200120, China
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Gao HJ, Qiao YC, Zhang YY, Wang YR, Niu WY. [Association study of serum LncRNA MALAT1 and SAA with type 2 diabetic kidney disease]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1838-1843. [PMID: 36536575 DOI: 10.3760/cma.j.cn112150-20220325-00282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
To investigate the correlation of serum long noncoding RNA-metastasis associated lung adenocarcinoma transcript 1(LncRNA MALAT1) and serum amyloid A(SAA) with diabetic kidney disease. Retrospective research was used, and 40 patients with type 2 diabetes and 80 patients with type 2 diabetic kidney disease patients who were treated in Tianjin Medical University Chu Hsien-I Memorial Hospital from August 2021 to February 2022 were selected, and 40 healthy subjects were selected during the same period. Reverse transcription-polymerase chain reaction(RT-PCR) was used to detect serum LncRNA MALAT1. SAA were detected with enzyme linked immunosorbent assay (ELISA). Automatic biochemistry analyzer was used to detect serum creatinine (CREA) and low-density lipoprotein cholesterol(LDL-C),automatic blood glucose analyzer to detect serum fasting plasma glucose (FPG), automatic glycated hemoglobin analyzer to detect hemoglobin A1C (HbA1c), and automatic immunoassay analyzer to detect urinary albumin to creatinine ratio(UACR). Differences between groups were compared by t test and analysis of variance. Pearson analysis was used to analyze the correlation between MALAT1, SAA and other indicators. Receiver operating characteristic curve(ROC) was used to evaluate the auxiliary diagnostic value of MALAT1 and SAA for diabetic kidney disease. The results showed that MALAT1 and SAA in the diabetic kidney disease with mass albuminuria group were higher than those in the type 2 diabetes mellitus group (q=8.57, P<0.01; q=11.09, P<0.01) and the diabetic kidney disease with microalbuminuria group (q=3.96, P<0.05; q=7.85, P<0.01). MALAT1 had a high correlation with UACR, CREA, SAA, HbA1c and FPG (r value was 0.706, 0.643, 0.578, 0.553, and 0.524, all P<0.01), and SAA had a high correlation with UACR, HbA1c and FPG (r value was 0.664, 0.617, and 0.595, all P<0.01). ROC curve analysis of the diagnostic value of LncRNA MALAT1 and protein SAA for diabetic kidney disease showed that the areas under curve (AUC) were 0.741 and 0.744, respectively. The combined diagnostic value of the two was the greatest (AUC=0.801). In summary, MALAT1 and SAA were elevated in the serum of patients with type 2 diabetes. Their concentrations in the serum of group with diabetic kidney disease were higher than that in the type 2 diabetes group, and the serum concentrations of MALAT1 and SAA in group with mass albuminuria are higher than the group with microalbuminuria. MALAT1 and SAA were both closely related to UACR and HbA1c, and there is a correlation between them. Both of them may have ancillary diagnostic value for diabetic kidney disease.
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Affiliation(s)
- H J Gao
- Clinical Laboratory,National Health Commission Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - Y C Qiao
- Clinical Laboratory,National Health Commission Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - Y Y Zhang
- Clinical Laboratory,National Health Commission Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - Y R Wang
- Clinical Laboratory,National Health Commission Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
| | - W Y Niu
- Clinical Laboratory,National Health Commission Key Laboratory of Hormones and Development, Tianjin Key Laboratory of Metabolic Diseases, Chu Hsien-I Memorial Hospital & Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin 300134, China
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Wang LD, Li X, Song XK, Zhao FY, Zhou RH, Xu ZC, Liu AL, Li JL, Li XZ, Wang LG, Zhang FH, Zhu XM, Li WX, Zhao GZ, Guo WW, Gao XM, Li LX, Wan JW, Ku QX, Xu FG, Zhu AF, Ji HX, Li YL, Ren SL, Zhou PN, Chen QD, Bao SG, Gao HJ, Yang JC, Wei WM, Mao ZZ, Han ZW, Chang YF, Zhou XN, Han WL, Han LL, Lei ZM, Fan R, Wang YZ, Yang JJ, Ji Y, Chen ZJ, Li YF, Hu L, Sun YJ, Chen GL, Bai D, You D. [Clinical characteristics of 272 437 patients with different histopathological subtypes of primary esophageal malignant tumors]. Zhonghua Nei Ke Za Zhi 2022; 61:1023-1030. [PMID: 36008295 DOI: 10.3760/cma.j.cn112138-20210929-00668] [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: 06/15/2023]
Abstract
Objective: To characterize the histopathological subtypes and their clinicopathological parameters of gender and onset age by common, rare and sparse primary esophageal malignant tumors (PEMT). Methods: A total of 272 437 patients with PEMT were enrolled in this study, and all of the patients were received radical surgery. The clinicopathological information of the patients was obtained from the database established by the State Key Laboratory of Esophageal Cancer Prevention & Treatment from September 1973 to December 2020, which included the clinical treatment, pathological diagnosis and follow-up information of esophagus and gastric cardia cancers. All patients were diagnosed and classified by the criteria of esophageal tumor histopathological diagnosis and classification (2019) of the World Health Organization (WHO). The esophageal tumors, which were not included in the WHO classification, were analyzed separately according to the postoperative pathological diagnosis. The χ2 test was performed by the SPSS 25.0 software on count data, and the test standard α=0.05. Results: A total of 32 histopathological types were identified in the enrolled PEMT patients, of which 10 subtypes were not included in the WHO classification. According to the frequency, PEMT were divided into common (esophageal squamous cell carcinoma, ESCC, accounting for 97.1%), rare (esophageal adenocarcinoma, EAC, accounting for 2.3%) and sparse (mainly esophageal small cell carcinoma, malignant melanoma, etc., accounting for 0.6%). All the common, rare, and sparse types occurred predominantly in male patients, and the gender difference of rare type was most significant (EAC, male∶ female, 2.67∶1), followed with common type (ESCC, male∶ female, 1.78∶1) and sparse type (male∶ female, 1.71∶1). The common type (ESCC) mainly occurred in the middle thoracic segment (65.2%), while the rare type (EAC) mainly occurred in the lower thoracic segment (56.8%). Among the sparse type, malignant melanoma and malignant fibrous histiocytoma were both predominantly located in the lower thoracic segment (51.7%, 66.7%), and the others were mainly in the middle thoracic segment. Conclusion: ESCC is the most common type among the 32 histopathological types of PEMT, followed by EAC as the rare type, and esophageal small cell carcinoma and malignant melanoma as the major sparse type, and all of which are mainly occur in male patients. The common type of ESCC mainly occur in the middle thoracic segment, while the rare type of EAC mainly in the lower thoracic segment. The mainly sparse type of malignant melanoma and malignant fibrous histiocytoma predominately occur in the lower thoracic segment, and the remaining sparse types mainly occur in the middle thoracic segment.
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Affiliation(s)
- L D Wang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - X Li
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China Department of Pathology and Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - X K Song
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - F Y Zhao
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - R H Zhou
- Department of Thoracic Surgery, Anyang Tumor Hospital, Anyang 455000, China
| | - Z C Xu
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - A L Liu
- Department of Oncology, Linzhou Tumor Hospital, Linzhou 456550, China
| | - J L Li
- Department of Oncology, Linzhou Tumor Hospital, Linzhou 456550, China
| | - X Z Li
- Department of Pathology, Linzhou Esophageal Cancer Hospital, Linzhou 456592, China
| | - L G Wang
- Department of Oncology, Linzhou People's Hospital, Linzhou 456550, China
| | - F H Zhang
- Department of Thoracic Surgery, Xinxiang Central Hospital, Xinxiang 453000, China
| | - X M Zhu
- Department of Pathology, Xinxiang Central Hospital, Xinxiang 453000, China
| | - W X Li
- Department of Pathology, Cixian People's Hospital, Handan 056599, China
| | - G Z Zhao
- Department of Pathology, the First Affiliated Hospital of Xinxiang Medicine University, Xinxiang 453100, China
| | - W W Guo
- Department of Oncology, Linzhou Tumor Hospital, Linzhou 456550, China
| | - X M Gao
- Department of Oncology, Linzhou People's Hospital, Linzhou 456550, China
| | - L X Li
- Xinxiang Key Laboratory for Molecular Therapy of Cancer, Xinxiang Medical University, Xinxiang 453003, China
| | - J W Wan
- Department of Oncology, Nanyang Central Hospital, Nanyang 473009, China
| | - Q X Ku
- Department of Endoscopy, the Second Affiliated Hospital of Nanyang Medical College, Nanyang 473000, China
| | - F G Xu
- Department of Oncology, the First People's Hospital of Nanyang, Nanyang 473002, China
| | - A F Zhu
- Department of Oncology, the First People's Hospital of Shangqiu, Shangqiu 476000, China
| | - H X Ji
- Department of Clinical Laboratory, the Affiliated Heping Hospital of Changzhi Medical College, Changzhi 046000, China
| | - Y L Li
- Department of Pathology, the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450003, China
| | - S L Ren
- Department of Pathology, the Second Affiliated Hospital, Zhengzhou University, Zhengzhou 450003, China
| | - P N Zhou
- Department of Pathology, Henan People's Hospital, Zhengzhou 450003, China
| | - Q D Chen
- Department of Thoracic Surgery, Henan Tumor Hospital, Zhengzhou 450003, China
| | - S G Bao
- Department of Oncology, Anyang District Hospital, Anyang 455002, China
| | - H J Gao
- Department of Oncology, the First Affiliated Hospital, Henan University of Science and Technology, Luoyang 471003, China
| | - J C Yang
- Department of Pathology, Anyang Tumor Hospital, Anyang 455000, China
| | - W M Wei
- Department of Thoracic Surgery, Linzhou Esophageal Cancer Hospital, Linzhou 456592, China
| | - Z Z Mao
- Department of Thoracic Surgery, Cancer Hospital of the University of Chinese Academy of Sciences, Hangzhou 310005, China
| | - Z W Han
- Department of Pathology, Zhenping County People's Hospital, Nanyang 474250, China
| | - Y F Chang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - X N Zhou
- Department of Gastroenterology, the Second Affiliated Hospital, Zhengzhou University, Zhengzhou 450003, China
| | - W L Han
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - L L Han
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - Z M Lei
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - R Fan
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - Y Z Wang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - J J Yang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - Y Ji
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - Z J Chen
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - Y F Li
- Department of Gastroenterology, the Third People's Hospital of Huixian, Huixian 453600, China
| | - L Hu
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - Y J Sun
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China Department of Pathology and Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - G L Chen
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China Department of Pathology and Pathophysiology, School of Basic Medical Sciences, Zhengzhou University, Zhengzhou 450001, China
| | - D Bai
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
| | - Duo You
- State Key Laboratory of Esophageal Cancer Prevention & Treatment and Henan Key Laboratory for Esophageal Cancer Research of the First Affiliated Hospital, Zhengzhou University, Zhengzhou 450052, China
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Gao HJ, Zhong LJ, Yan XY, Zhang WX, Shen W. [Personalized therapy for Helicobacter pylori on initial treatment: the initial treatment is the decisive battle]. Zhonghua Yi Xue Za Zhi 2022; 102:1631-1634. [PMID: 35692014 DOI: 10.3760/cma.j.cn112137-20220224-00384] [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: 06/15/2023]
Abstract
As widespread eradication treatment continues, the rate of (Helicobacter pylori, H. pylori) antibiotic resistance is increasing. Together with host CYP2C19 gene polymorphisms, H. pylori coccoid transformation, patient compliance, irregular treatment regimens or empirical repeated eradication therapy by physician, H. pylori eradication rates have gradually decreased. Personalized treatment is an effective measure to achieve successful eradication of H. pylori in the initial treatment. With the first approval of molecular diagnostic kit for H. pylori clarithromycin resistance in China and the updated definition of refractory H. pylori infection by the American Gastroenterological Association (AGA), the personalized treatment of H. pylori guided by antibiotic resistance genotype detection in initial treatment, that follows the latest international consensus and guidelines, conforms to the national situation and surpasses the international standards, has come to the forefront.
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Affiliation(s)
- H J Gao
- Tongji Hospital, Institute of Digestive Diseases, School of Medicine, Tongji University, Shanghai 200065, China
| | - L J Zhong
- Tongji Hospital, Institute of Digestive Diseases, School of Medicine, Tongji University, Shanghai 200065, China
| | - X Y Yan
- China Center for Helicobacter pylori Molecular Medicine, Shanghai 201321, China
| | - W X Zhang
- National Engineering Center for Biochips at Shanghai, Shanghai 201203, China
| | - Weixiang Shen
- National Engineering Center for Biochips at Shanghai, Shanghai 201203, China
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Xie XH, Wang YJ, Lei W, Gao HJ, Duan YJ, Hou X. [CXCL5 inhibits tumor immune of lung cancer via modulating PD1/PD-L1 signaling]. Zhonghua Zhong Liu Za Zhi 2022; 44:382-388. [PMID: 35615793 DOI: 10.3760/cma.j.cn112152-20200223-00118] [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] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Objective: To investigate the role of CXCL5 in tumor immune of lung cancer and to explore the potential molecular mechanisms. Methods: A total of 62 cases of patients with lung cancer admitted in the First Affiliated Hospital of Henan University from May 2018 to December 2019 were recruited as study object. Another 20 cases of patients with pulmonary infectious diseases and 20 cases of healthy control were selected as control. Enzyme-linked immunosorbent assay (ELISA) was used to determine serum levels of CXCL5 in patients with lung cancer, pulmonary infectious diseases and healthy control. Immunohistochemical staining (IHC) was used to detect the expressions of CXCL5 and PD-1/PD-L1 in tumor and paracarcinoma tissues of patients with lung cancer. Pearson correlation analysis was used to evaluate the correlation between CXCL5 and PD-1 in tumor and paracarcinoma tissues of patients with lung cancer. Lewis cells either expressing CXCL5 or vector plasmids were used to establish C57BL/6J mice model of lung cancer, and all mice were then divided into vehicle and PD-1 antibody treatment groups, 10 mice for each group. The mice survival and tumor growth curves were recorded. IHC was used to evaluate the expressions of CXCL5, PD-1 as well as the proportions of CD8(+) T and Treg cells in xenograft tumor tissues. Results: In patients with lung cancer, the serum level of CXCL5 [(351.7±51.5) ng/L] was significant higher than that in patients with pulmonary infectious diseases and healthy control [(124.7±23.4) ng/L, P<0.001]. The expression levels of CXCL5 (0.136±0.034), CXCR2 (0.255±0.050), PD-1 (0.054±0.012) and PD-L1 (0.350±0.084) in tumor were significant higher than those in paracarcinoma normal tissues [(0.074±0.022), (0.112±0.023), (0.041±0.007) and (0.270±0.043) respectively, P<0.001]. CXCL5 was significant positively correlated with PD-1 in tumor tissues of lung cancer (r=0.643, P<0.001), but not correlated with PD-1 in paracarcinoma tissues(r=0.088, P=0.496). The vector control group, CXCL5 overexpression group, vector control + anti-PD-1 antibody treatment group and CXCL5 overexpression + anti-PD-1 antibody treatment group all successfully formed tumors in mice, while CXCL5 overexpression increased the tumor growth significantly (P<0.01), which was abrogated by the treatment of anti-PD-1 antibody. CXCL5 overexpression decreased the mice survival time significantly (P<0.01), this effect was also abrogated by the treatment of anti-PD-1 antibody. The proportion of CD8(+) T cells in CXCL5 overexpression group [(10.40±2.00)%] was significant lower than that in vector control group [(21.20±3.30)%, P=0.002]. The proportion of CD4(+) Foxp3(+) Treg cells in CXCL5 overexpression group [(38.40±3.70)%] was significant higher than that in vector control group [(23.30±2.25)%, P<0.001]. After the treatment of anti-PD-1 antibody, no significant difference were observed for the proportion of CD8(+) T cells [(34.10±5.00)% and (33.40±4.00)% respectively] and Treg cells [(14.70±3.50)% and (14.50±3.30)% respectively] in xenograft tumor tissues between CXCL5 overexpression+ anti-PD-1 antibody treatment group and vector control + anti-PD-1 antibody treatment group (P>0.05). Conclusion: The expressions of CXCL5 and PD-1/PD-L1 are all increased significantly in the tumor tissues of patients with lung cancer, CXCL5 may inhibit tumor immune of lung cancer via modulating PD-1/PD-L1 signaling.
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Affiliation(s)
- X H Xie
- Department of Oncology, the First Affiliated Hospital of Henan University, Kaifeng 475000, China
| | - Y J Wang
- Department of Gynaecology and Obstetrics, the First Affiliated Hospital of Henan University, Kaifeng 475000, China
| | - W Lei
- Department of Ultrasonography, the First Affiliated Hospital of Henan University, Kaifeng 475000, China
| | - H J Gao
- Department of Oncology, the First Affiliated Hospital of Henan University, Kaifeng 475000, China
| | - Y J Duan
- Department of Oncology, the First Affiliated Hospital of Henan University, Kaifeng 475000, China
| | - X Hou
- Department of Oncology, the First Affiliated Hospital of Henan University, Kaifeng 475000, China
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Chi YX, Gao HJ, Li QY, Kuang J, Yan JQ. [Mediastinal emphysema following thyroidectomy: report of five cases]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2021; 56:652-654. [PMID: 34256492 DOI: 10.3760/cma.j.cn115330-20210316-00129] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Y X Chi
- Department of Breast and Thyroid Surgery, Shaoxing People's Hospital (Shaoxing Hospital of Zhejiang University), Zhejiang 312000, China
| | - H J Gao
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Q Y Li
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - J Kuang
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - J Q Yan
- Department of General Surgery, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
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Gao HJ, Pang HS, Sun XD, Zhang T, Jing T, Wang XL, Mo XJ, Hu W. [Effects of persistent Echinococcus multilocularis infections on hepatic fibrosis in mice]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2021; 33:54-61. [PMID: 33660475 DOI: 10.16250/j.32.1374.2020282] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
OBJECTIVE To investigate the effects of persistent Echinococcus multilocularis infections on hepatic fibrosis in mice, so as to provide insights into the understanding of liver fibrogenesis induced by E. multilocularis infections and the treatment of alveolar echinococcosis. METHODS Hepatic stellate HSC-T6 and LX-2 cells were exposed to the sera (25, 50 and 100 μL) from Meriones unguiculatus infected with E. multilocularis, and E. multilocularis, germinal layer cells (GCs) and protoscoleces (PSCs) for 48 hours, respectively. The cell proliferation was measured using a CCK-8 assay, and the levels of collagen 1 (Col1) and α-smooth muscle actin (α-SMA) were measured in the culture supernatant of HSC-T6 cells using ELISA. In addition, the serum and liver samples were collected 1, 2, 4, 6, 8 months post-infection with E. multilocularis, respectively. The serum Col1 and α-SMA concentrations were measured using enzyme-linked immunosorbent assay (ELISA), and the deposition of collagen fibers was examined in mice livers using Sirius red staining. RESULTS The sera of E. multilocularis-infected gerbils promoted the proliferation of HSC-T6 and LX-2 cells in vitro, and there were significant differences seen in the proliferative rate of HSC-T6 (FHSC-T6 = 126.50, P < 0.05) and LX-2 cells (FLX-2 = 201.50, P < 0.05) among different serum groups, with the highest proliferative rate of HSC-T6 (573.36% ± 206.34%) and LX-2 cells (940.38% ± 61.65%) found following exposure to 100 μL mouse sera. Exposure to serum from E. multilocularis-infected gerbils resulted in an increase in the Col1 and α-SMA levels in the culture supernatant of HSC-T6 cells, with the greatest Col1 (20.99 ng/mL ± 2.01 ng/mL) and α-SMA levels (305.52 pg/mL ± 16.67 pg/mL) measured following exposure to 100 μL sera. The metacestodes (142.65% ± 9.17% and 189.99% ± 7.75%), GCs (118.55% ± 8.96% and 122.54% ± 0.21%) and PSCs of E. multilocularis (156.34% ± 17.45% and 160.59% ± 31.41%) all promoted the proliferation of HSC-T6 and LX-2 cells in vitro, and there were significant differences in the proliferative rates of HSC-T6 (FHSC-T6 = 11.24, P < 0.05) and LX-2 cells among groups (FLX-2 = 47.72, P < 0.05). Exposure to E. multilocularis resulted in an increase in Col1 and α-SMA levels in the culture supernatant of HSC-T6 cells, and the highest Col1 (4.43 ng/mL ± 2.23 ng/mL) and α-SMA levels (285.20 pg/mL ± 90.67 pg/mL) were detected following treatment with E. multilocularis metacestodes. In addition, a persistent increase was seen in the deposition of collagen fibers in mice livers 1 to 8 months post-infection with E. multilocularis, with the greatest Col1 level (280.26 ng/mL ± 23.04 ng/mL) seen 6 months post-infection and the highest α-SMA level (33.68 ng/mL ± 4.45 ng/mL) detected 8 months post-infection, respectively. CONCLUSIONS Persistent E. multilocularis infections promote hepatic stellate cell proliferation, induce an increase in mouse serum Col1 and α-SMA levels, and cause elevated deposition of collagen fibers in mice livers. The infective stage of E. multilocularis is a critical period for inducing hepatic fibrosis of alveolar echinococcosis.
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Affiliation(s)
- H J Gao
- National Health Commission Key Laboratory of Echinococcosis Prevention and Control, Tibet Autonomous Region Centre for Disease Control and Prevention, Lhasa 850000, China.,School of Basic Medical Sciences, Lanzhou University, China.,National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention, Chinese Centre for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Centre for International Research on Tropical Diseases, Ministry of Science and Technology, Key Laboratory of Parasites and Vector Biology, National Health Commission, China.,Garze Tibetan Autonomous Prefecture Centre for Disease Control and Prevention, Sichuan Province, China.,Co-first authors
| | - H S Pang
- National Health Commission Key Laboratory of Echinococcosis Prevention and Control, Tibet Autonomous Region Centre for Disease Control and Prevention, Lhasa 850000, China.,Co-first authors
| | - X D Sun
- School of Basic Medical Sciences, Lanzhou University, China
| | - T Zhang
- National Health Commission Key Laboratory of Echinococcosis Prevention and Control, Tibet Autonomous Region Centre for Disease Control and Prevention, Lhasa 850000, China.,National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention, Chinese Centre for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Centre for International Research on Tropical Diseases, Ministry of Science and Technology, Key Laboratory of Parasites and Vector Biology, National Health Commission, China
| | - T Jing
- School of Basic Medical Sciences, Lanzhou University, China
| | - X L Wang
- National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention, Chinese Centre for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Centre for International Research on Tropical Diseases, Ministry of Science and Technology, Key Laboratory of Parasites and Vector Biology, National Health Commission, China
| | - X J Mo
- National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention, Chinese Centre for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Centre for International Research on Tropical Diseases, Ministry of Science and Technology, Key Laboratory of Parasites and Vector Biology, National Health Commission, China
| | - W Hu
- National Institute of Parasitic Diseases, Chinese Centre for Disease Control and Prevention, Chinese Centre for Tropical Diseases Research, WHO Collaborating Centre for Tropical Diseases, National Centre for International Research on Tropical Diseases, Ministry of Science and Technology, Key Laboratory of Parasites and Vector Biology, National Health Commission, China
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8
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Zheng PM, Gao HJ, Li JM, Zhang P, Li G. [Effect of exosome-derived miR-223 from macrophages on the metastasis of gastric cancer cells]. Zhonghua Yi Xue Za Zhi 2020; 100:1750-1755. [PMID: 32536099 DOI: 10.3760/cma.j.cn112137-20200425-01309] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the effect and mechanism of exosome-derived miR-223 from macrophage on gastric cancer (GC) cell metastasis. Methods: Exosomes isolated from macrophages culture medium were characterized and cocultured with GC cell, the miRNA level was detected by qRT-PCR. The migration and invasion of GC cell were detected by transwell. The internalization of exosomes, transfer of miR-223 was observed by immunofluorescence. Macrophage were transfected with a miR-223 inhibitor or negative control, transwell and scratch test were employed to explore the effect of macrophage derived exosome on the migration and invasion of GC cell. Western blot and RT-PCR assay were performed to uncover the underlying mechanisms of miR-223 and PTEN-PI3K/AKT pathway. Results: This study showed that macrophage and macrophage-derived exosomes promoted the migration and invasion of gastric cancer cell(253.2±6.3, 451.8±12.8, 453.4±14.4, all P<0.01, and 98.4±5.1, 276.5±10.3, 257.3±8.5, all P<0.01, respectively). miR-223 was enriched in macrophage-derived exosomes, which was transferred to the co-cultivated gastric cancer cells. miR-223 knockdown in macrophage reversed the migration and invasion of exosomes on gastric cancer cells(215.6±9.2, 402.5±11.6, 253.7±10.4, all P<0.01, and 91.5±8.2,263.4±9.3,105.8±9.3,all P<0.01, respectively).Functional studies revealed that exosomal miR-223 derived from macrophage promoted the metastasis of GC cells via the PTEN-PI3K/AKT pathway. In addition, itshowed thatthe actin cytoskeleton was altered, and multiple proteins associated with epithelial-mesenchymaltransition (EMT) were upregulated. Conclusion: Exosomal transfer of macrophage-derived miR-223 promote the metastasis of GC cells through targeting the PTEN-PI3K/AKT pathway.
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Affiliation(s)
- P M Zheng
- Department of Clinical Laboratory, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Henan University People's Hospital, Zhengzhou 450003, China
| | - H J Gao
- Department of Oncology, the First Affiliated Hospital of Henan University, Kaifeng 475000, China
| | - J M Li
- Department of Gastrointestinal surgery, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Henan University People's Hospital, Zhengzhou 450003, China
| | - P Zhang
- Department of Gastrointestinal surgery, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Henan University People's Hospital, Zhengzhou 450003, China
| | - G Li
- Department of Clinical Laboratory, Henan Provincial People's Hospital; Zhengzhou University People's Hospital, Henan University People's Hospital, Zhengzhou 450003, China
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Gao HJ, Zhan BJ. [Successful eradication of Helicobacter pylori in initial treatment: deep integration of personalized and standardized therapy]. Zhonghua Yi Xue Za Zhi 2020; 100:2336-2339. [PMID: 32791807 DOI: 10.3760/cma.j.cn112137-20200117-00114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Affiliation(s)
- H J Gao
- Institute of Digestive Diseases, School of Medicine, Tongji University, Shanghai 201203, China
| | - B J Zhan
- China Center for Helicobacter pylori Molecular Medicine, Shanghai 201321, China
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Guo XK, Gao HJ, Wang ML, Han B, Wang B, Ge N, Shi GD, Wei YC. [Comparison of short-term and long-term outcomes between thoracoscopic pneumonectomy and open pneumonectomy for non-small cell lung cancer: a study based on propensity score matching]. Zhonghua Wai Ke Za Zhi 2020; 58:131-136. [PMID: 32074813 DOI: 10.3760/cma.j.issn.0529-5815.2020.02.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To compare the short-term and long-term results of thoracoscopic and open pneumonectomy for non-small cell lung cancer. Methods: The clinical data of patients with non-small cell lung cancer who underwent pneumonectomy in the Department of Thoracic Surgery, Qingdao University Hospital from January 2008 to December 2016 were collected. Totally 142 patients (55 in the thoracoscopic group and 87 in the open group) were included in the study. A total of 29 pairs of patients were successfully matched by propensity score matching (PSM). Perioperative outcomes and overall survival were compared between the two groups using t test, χ(2) test, Kaplan-Meier curve and Log-rank test, respectively. Results: Camparion with open group, the thoracoscopic group had longer operative time ((209.7±70.2) minutes vs. (171.3±43.5) minutes, t=2.50, P=0.02), more mediastinal lymph node dissection (M(Q(R)): 17(9) vs. 11(10), W=388, P=0.02) and shorter postoperative hospital stay (7.0(3.5) vs. 9.0(3.0), W=285, P=0.03). There was no significant difference in estimated blood loss, postoperative drainage time, dissected lymph node number, dissected lymph node station and perioperative complications. After PSM, there were no signifificant differences found in 3-year survival (71.4% vs. 48.1%, P=0.10) and 3-year disease-free survival (67.4% vs. 47.2%, P=0.13) between the two groups. Conclusion: Thoracoscopic pneumonectomy is safe and feasible for the treatment of non-small cell lung cancer with more mediastinal lymph node dissection and accelerating recovery, and equivalent long-term prognosis when compared with open approach.
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Affiliation(s)
- X K Guo
- Department of Thoracic Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - H J Gao
- Department of Thoracic Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - M L Wang
- Department of Thoracic Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - B Han
- Department of Thoracic Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - B Wang
- Department of Thoracic Surgery, Changyi People's Hospital, Changyi 261300, Shandong Province, China
| | - N Ge
- Department of Thoracic Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - G D Shi
- Department of Thoracic Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
| | - Y C Wei
- Department of Thoracic Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
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Gao HJ, Shang XB, Yu ZT. [Current status and prognosis of immune checkpoint inhibitors for esophageal cancer]. Zhonghua Wai Ke Za Zhi 2019; 57:77-82. [PMID: 31510736 DOI: 10.3760/cma.j.issn.0529-5815.2019.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Programmed cell death protein 1 (PD-1/CD279) and cytotoxic T Lymphocyte Antigen-4 (CTLA-4) are important immune checkpoints, through the role of the corresponding ligands and inhibit T cell activation and production of cytokines, in maintaining the body's vital role in peripheral tolerance. The use of anti-CTLA-4/PD-1 /PD-L1 monoclonal antibodies to block the tumor signaling pathway has shown excellent anti-tumor efficacy in a variety of solid tumors, and it is expected that immunotherapy will be available for the treatment of 60% advanced tumors in the next decade. Esophageal cancer is one of the major causes of cancer-related deaths worldwide, and its 5-year survival rate is generally low. Currently, radiotherapy, chemotherapy, and surgery are the standard treatments for esophageal cancer, and there is no effective treatment scheme for patients with esophageal cancer who fail to respond to standard treatment. Due to the diversity of somatic cell gene mutations and the generation of neo-antigens in esophageal cancer, immunotherapy has become a feasible treatment scheme to improve the prognosis of esophageal cancer. In this situation, the application of immunotherapy for esophageal cancer or more specific immune checkpoint inhibitors has gradually become the focus of the treatment of esophageal cancer. Nowadays, the research of immune checkpoint inhibitors, such as ipilimumab, tremelimumab, pembrolizumab, nivolumab and avelumab on esophageal cancer is proceeding at an amazing speed. The phase Ⅰ b clinical study of immunotherapy for esophageal cancer, which previously attracted great interest, has been replaced by the phase Ⅲ clinical study, and the results of the relevant studies also show a good prospect for the application of immune checkpoint inhibitors for esophageal cancer. However, the prediction of therapeutic effect and the selection of the best candidates still need to be further studied.
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Affiliation(s)
- H J Gao
- Department of Thoracic Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266003, China
| | - X B Shang
- Department of Esophageal Cancer, Tianjin's Clinical Research Center for Cancer and Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
| | - Z T Yu
- Department of Esophageal Cancer, Tianjin's Clinical Research Center for Cancer and Key Laboratory of Cancer Prevention and Therapy, National Clinical Research Center for Cancer, Tianjin Medical University Cancer Institute and Hospital, Tianjin 300060, China
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Shi B, Wang XQ, Duan WD, Tan GD, Gao HJ, Pan YW, Guo QJ, Zhang HY. Effects of positive acceleration (+Gz stress) on liver enzymes, energy metabolism, and liver histology in rats. World J Gastroenterol 2019; 25:346-355. [PMID: 30686902 PMCID: PMC6343093 DOI: 10.3748/wjg.v25.i3.346] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2018] [Revised: 12/12/2018] [Accepted: 12/21/2018] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Exposure to high sustained +Gz (head-to-foot inertial load) is known to have harmful effects on pilots’ body in flight. Although clinical data have shown that liver dysfunction occurs in pilots, the precise cause has not been well defined.
AIM To investigate rat liver function changes in response to repeated +Gz exposure.
METHODS Ninety male Wistar rats were randomly divided into a blank control group (BC group, n = 30), a +6 Gz/5 min stress group (6GS group, n = 30), and a +10 Gz/5min stress group (10GS group, n = 30). The 6GS and 10GS groups were exposed to +6 Gz and +10 Gz, respectively, in an animal centrifuge. The onset rate of +Gz was 0.5 G/s. The sustained time at peak +Gz was 5 min for each exposure (for 5 exposures, and 5-min intervals between exposures for a total exposure and non-exposure time of 50 min). We assessed liver injury by measuring the portal venous flow volume, serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST), liver tissue malondialdehyde (MDA), Na+-K+-ATPase, and changes in liver histology. These parameters were recorded at 0 h, 6 h, and 24 h after repeated +Gz exposures.
RESULTS After repeated +Gz exposures in the 6GS and the 10GS groups, the velocity and flow signal in the portal vein (PV) were significantly decreased as compared to the BC group at 0 h after exposure. Meanwhile, we found that the PV diameter did not change significantly. However, rats in the 6GS group had a much higher portal venous flow volume than the 10GS group at 0 h after exposure. The 6GS group had significantly lower ALT, AST, and MDA values than the 10GS group 0 h and 6 h post exposure. The Na+-K+-ATPase activity in the 6GS group was significantly higher than that in the 10GS group 0 h and 6 h post exposure. Hepatocyte injury, determined pathologically, was significantly lower in the 6GS group than in the 10GS group.
CONCLUSION Repeated +Gz exposures transiently cause hepatocyte injury and affect liver metabolism and morphological structure.
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Affiliation(s)
- Bin Shi
- Department of Hepatobiliary Surgery, Air Force Medical Center, PLA, Beijing 100142, China
| | - Xian-Qiang Wang
- Department of Pediatrics, Chinese PLA General Hospital and PLA Medical School, Beijing 100853, China
| | - Wei-Dong Duan
- Department of Hepatobiliary Surgery, Chinese PLA General Hospital and PLA Medical School, Beijing 100853, China
| | - Guo-Dong Tan
- Outpatient Department, Air Command Headquarters, Beijing 100038, China
| | - Han-Jing Gao
- Department of Ultrasound, Chinese PLA General Hospital and PLA Medical School, Beijing 100853, China
| | - Ying-Wei Pan
- Department of Hepatobiliary Surgery, Chinese PLA General Hospital and PLA Medical School, Beijing 100853, China
| | - Qing-Jun Guo
- Department of Endocrinology, Changhai Hospital, Second Military Medical University, Shanghai 200433, China
| | - Hong-Yi Zhang
- Department of Hepatobiliary Surgery, Air Force Medical Center, PLA, Beijing 100142, China
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Albers L, von Kries R, Sobotzki C, Gao HJ, Buka SL, Clifton VL, Grzeskowiak LE, Oken E, Paus T, Pausova Z, Rifas-Shiman SL, Sharma AJ, Gilman SE. Differences in maternal smoking across successive pregnancies - dose-dependent relation to BMI z-score in the offspring: an individual patient data (IPD) meta-analysis. Obes Rev 2018; 19:1248-1255. [PMID: 30035359 PMCID: PMC6107372 DOI: 10.1111/obr.12698] [Citation(s) in RCA: 9] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2018] [Revised: 03/19/2018] [Accepted: 03/20/2018] [Indexed: 12/17/2022]
Abstract
INTRODUCTION Uncontrolled family factors may bias the estimation of the association between maternal smoking during pregnancy and offspring body mass index (BMI). The objective was to assess if there is an association between maternal smoking during pregnancy and offspring BMI z-score independent of factors in the siblings' shared environment and if such association is linear. METHODS We performed an individual patient data meta-analysis using five studies providing sibling data (45,299 children from 14,231 families). In a multi-level model, separating within-family and between-family effects and with random intercept for families, we analysed the dose-response association between maternal number of cigarettes per day during pregnancy and offspring's BMI z-score using B-splines to allow for non-linear associations. RESULTS A linear within-family effect for number of cigarettes smoked in the range from 1 to 30 cigarettes per day on the offspring's BMI z-score was observed. Each additional cigarette per day between sibling pregnancies resulted in an increase in BMI z-score of 0.007 (95% CI [0.006, 0.009]). A between family-effect emerged only with doses ≥25 cigarettes per day. CONCLUSIONS The number of cigarettes mothers smoke per day during pregnancy is positively associated with offspring BMI z-score even among siblings, suggesting that the association is not entirely explained by confounding by family factors.
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Affiliation(s)
- L Albers
- Institute of Social Paediatrics and Adolescents Medicine, Division of Epidemiology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - R von Kries
- Institute of Social Paediatrics and Adolescents Medicine, Division of Epidemiology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - C Sobotzki
- Institute of Social Paediatrics and Adolescents Medicine, Division of Epidemiology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - H J Gao
- Institute of Social Paediatrics and Adolescents Medicine, Division of Epidemiology, Ludwig-Maximilians-University Munich, Munich, Germany
| | - S L Buka
- Department of Epidemiology, Brown University School of Public Health, Providence, RI, USA
| | - V L Clifton
- Adelaide Medical School, The Robinson Research Institute, The University of Adelaide, Adelaide, SA, Australia
| | - L E Grzeskowiak
- Adelaide Medical School, The Robinson Research Institute, The University of Adelaide, Adelaide, SA, Australia
| | - E Oken
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School, Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - T Paus
- Rotman Research Institute and Departments of Psychology and Psychiatry, University of Toronto, Toronto, ON, Canada
| | - Z Pausova
- Hospital for Sick Children and Departments of Physiology and Nutritional Sciences, University of Toronto, Toronto, ON, Canada
| | - S L Rifas-Shiman
- Obesity Prevention Program, Department of Population Medicine, Harvard Medical School, Harvard Pilgrim Health Care Institute, Boston, MA, USA
| | - A J Sharma
- Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - S E Gilman
- Health Behavior Branch, Division of Intramural Population Health Research, Eunice Kennedy Shriver National Institute of Child Health and Human Development, Bethesda, MD, USA.,Department of Social and Behavioral Sciences, Harvard TH Chan School of Public Health, Boston, MA, USA.,Department of Epidemiology, Harvard TH Chan School of Public Health, Boston, MA, USA.,Department of Mental Health, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
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Pan MJ, Gao HJ, Jiang ZH, Wang D, Liu K, Wei YC. [Short-term and long-term survival in sleeve lobectomy by video-assisted thoracic surgery versus thoracotomy basing on the propensity score matching]. Zhonghua Wai Ke Za Zhi 2018; 56:533-537. [PMID: 30032536 DOI: 10.3760/cma.j.issn.0529-5815.2018.07.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the safety and efficacy of patients with centrally located lung cancer in sleeve lobectomy by video-assisted thoracic surgery (VATS). Methods: A retrospective analysis was performed on consecutive patients with centrally located lung cancer who underwent sleeve lobectomy admitted in the Affiliated Hospital of Qingdao University from January 2010 to September 2014. Propensity score matching analysis was performed to compare patients for thoracoscopic surgery and open surgery. Twenty-one pairs (42 cases) patients were included for analysis. The t-test, χ(2) test or Fisher's exact probabilities was adopted, if appropriate, to compare demographics and outcomes between the 2 groups. The Kaplan-Meier method and the Log-rank test were used for the distributions of disease free survival (DFS) and overall survival (OS) and their comparisons. Results: After propensity score-matched analysis, the VATS group had a longer operative time ((296.9±73.6) minutes vs. (218.1±59.2) minutes, t=3.82, P=0.00), but shorter postoperative drainage time ((3.3±1.5) days vs. (2.0±3.0) days, t=-0.93, P=0.01) and hospitalization time((6.7±2.8) days vs. (12.1±8.7)days, t=-1.72, P=0.01) than that of the thoracotomy group. Perioperative complications, 1-year and 3-year disease-free and overall survival rates were not statistically different between the two groups. Conclusion: For suitable patients, sleeve lobectomy by VATS is an acceptable safe and effective surgical procedure for patients with central lung cancer.
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Affiliation(s)
- M J Pan
- Department of Thoracic Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
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Gao HJ, Poon B, Harrison R, Mathu-Muju K. Social determinants in dental health of young Chinese immigrant children in British Columbia, Canada. Eur J Public Health 2017. [DOI: 10.1093/eurpub/ckx189.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- HJ Gao
- University of British Columbia, Vancouver, Canada
| | - B Poon
- University of British Columbia, Vancouver, Canada
| | - R Harrison
- University of British Columbia, Vancouver, Canada
| | - K Mathu-Muju
- University of British Columbia, Vancouver, Canada
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Wen LM, Lü GD, Zhao J, Lu S, Gao HJ, Chen B, Ma YF, Xiao YF, Yuan Y, Zhang HB, Liu H, Wang JH. Molecular Cloning and Characterization of Ribosomal Protein RPS9 in Echinococcus granulosus. J Parasitol 2017; 103:699-707. [PMID: 28902565 DOI: 10.1645/16-164] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023] Open
Abstract
Ribosomal protein S9 (RPS9) is an essential functional gene that participates in DNA repair and developmental regulations. A sequence homolog of RPS9 has been found to be upregulated in the protoscoleces (PSCs) of Echinococcus granulosus treated with artemisinin. However, E. granulosus RPS9 (EgRPS9) has not been identified before. In the present study, the 657-base pair (bp) cDNA encoding EgRPS9 was cloned. Amino acid sequence analysis showed that EgRPS9 was similar to the RSP9 proteins from Schistosoma japonicum (SjRPS9, 86%) and Schistosoma mansoni (SmRPS9, 79%). Phylogenetic tree analysis showed that EgRPS9, SmRPS9, and SjRPS9 were clustered together. We detected the EgRPS9 gene and protein expression in PSCs exposed to artesunate (AS) which displayed a dose-dependent reduction in PSC viability for 24 hr. The results showed that the EgRPS9 ratio of the 10-μM AS-treated ( P < 0.01) and 40-μM AS-treated ( P < 0.05) groups were increased from that of the control group. In addition, the level of reactive oxygen species (ROS) in the AS-treated groups increased in a dose-dependent manner compared to the level in the control group. In conclusion, the expression of EgRPS9 could be induced by ROS and might participate in the oxidative damage-based anti-parasite mechanism of AS treatment.
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Affiliation(s)
- L M Wen
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
| | - G D Lü
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
| | - J Zhao
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
| | - S Lu
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
| | - H J Gao
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
| | - B Chen
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
| | - Y F Ma
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
| | - Y F Xiao
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
| | - Y Yuan
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
| | - H B Zhang
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
| | - H Liu
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
| | - J H Wang
- Department of Clinical Pharmacy, First Affiliated Hospital of Xinjiang Medical University, No. 137 Liyushan South Road, Urumqi 830054, Xinjiang, China
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Zhu M, Zhu B, Wang YH, Wu Y, Xu L, Guo LP, Yuan ZR, Zhang LP, Gao X, Gao HJ, Xu SZ, Li JY. Linkage Disequilibrium Estimation of Chinese Beef Simmental Cattle Using High-density SNP Panels. Asian-Australas J Anim Sci 2014; 26:772-9. [PMID: 25049849 PMCID: PMC4093237 DOI: 10.5713/ajas.2012.12721] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 03/18/2013] [Accepted: 02/27/2013] [Indexed: 11/27/2022]
Abstract
Linkage disequilibrium (LD) plays an important role in genomic selection and mapping quantitative trait loci (QTL). In this study, the pattern of LD and effective population size (Ne) were investigated in Chinese beef Simmental cattle. A total of 640 bulls were genotyped with IlluminaBovinSNP50BeadChip and IlluminaBovinHDBeadChip. We estimated LD for each autosomal chromosome at the distance between two random SNPs of <0 to 25 kb, 25 to 50 kb, 50 to 100 kb, 100 to 500 kb, 0.5 to 1 Mb, 1 to 5 Mb and 5 to 10 Mb. The mean values of r2 were 0.30, 0.16 and 0.08, when the separation between SNPs ranged from 0 to 25 kb to 50 to 100 kb and then to 0.5 to 1 Mb, respectively. The LD estimates decreased as the distance increased in SNP pairs, and increased with the increase of minor allelic frequency (MAF) and with the decrease of sample sizes. Estimates of effective population size for Chinese beef Simmental cattle decreased in the past generations and Ne was 73 at five generations ago.
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Affiliation(s)
- M Zhu
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - B Zhu
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Y H Wang
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Y Wu
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - L Xu
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - L P Guo
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Z R Yuan
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - L P Zhang
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - X Gao
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - H J Gao
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - S Z Xu
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - J Y Li
- Laboratory of Molecular Biology and Bovine Breeding, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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18
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Zou Q, Liu M, Wang GQ, Lu HL, Yang TZ, Guo HM, Ma CR, Xu X, Zhang MH, Jiang JC, Meletis EI, Lin Y, Gao HJ, Chen CL. Step terrace tuned anisotropic transport properties of highly epitaxial LaBaCo2O5.5+δ thin films on vicinal SrTiO3 substrates. ACS Appl Mater Interfaces 2014; 6:6704-6708. [PMID: 24716582 DOI: 10.1021/am500422j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Highly epitaxial LaBaCo2O5.5+δ (LBCO) thin films were grown on different miscut (001) SrTiO3 substrates (miscut angle of 0.5°, 3.0°, and 5.0°) to study the substrate surface step terrace effect on the in-plane electrical transport properties. The microstructure studies by X-ray diffraction and transmission electron microscopy indicate that the as-grown films are A-site disordered cubic perovskite structures with the c-axis highly oriented along the film growth direction. The four-probe scanning tunneling microscopy (STM) studies show that the LBCO thin films grown on the vicinal SrTiO3 substrates have a typical semiconductor behavior with the substrate surface terrace step inducing anisotropic electronic transport properties. These results indicate that in highly epitaxial thin films the surface terrace step induced local strains can play an important role in controlling the electronic transport properties and the anisotropic nature.
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Affiliation(s)
- Q Zou
- Institute of Physics, Chinese Academy of Sciences , Beijing 100080, China
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19
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Du XH, Gan QF, Yuan ZR, Gao X, Zhang LP, Gao HJ, Li JY, Xu SZ. Polymorphism of MyoD1 and Myf6 genes and associations with carcass and meat quality traits in beef cattle. Genet Mol Res 2013; 12:6708-17. [PMID: 24391012 DOI: 10.4238/2013.december.13.4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Myogenic determination factor 1 (MyoD1) and myogenic factor 6 (Myf6) genes belong to the myogenic differentiation (MyoD) gene family, which play key roles in growth and muscle development. The study aimed to investigate the effects of variants in cattle MyoD1 and Myf6 on carcass and meat traits. We screened single nucleotide polymorphisms (SNPs) of both genes in 8 cattle populations, including Simmental, Angus, Hereford, Charolais, Limousin, Qinchuan, Luxi, and Jinnan by sequencing. The G782A locus was identified in exon 1 of MyoD1 (MyoD1-BglI) as well as the T186C locus in exon 1 of Myf6 (Myf6-ApaLI). For the two SNPs, the A allele was significantly more frequent than the B allele in the populations tested. The χ(2) test showed that the MyoD1-BglI locus conformed to Hardy-Weinberg equilibrium in the 8 populations, as did the Myf6-ApaLI locus, with the exception of the Simmental population (P > 0.05). Association analysis revealed that the MyoD1-BglI locus was significantly associated with loin muscle area (LMA) (P < 0.05), and the Myf6-ApaLI locus was significantly associated with carcass length (CL) (P < 0.05). Animals with BB and AB genotypes for the MyoD1-BglI locus had larger LMAs compared to animals with AA genotype. Individuals with BB genotype had longer CLs compared to those with AA and AB genotypes. We conclude that the two SNPs might provide useful genetic markers, opening up new possibilities for cattle breeding and improvements in gene-assisted selection.
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Affiliation(s)
- X H Du
- Laboratory of Molecular Biology and Bovine Breeding, Key Laboratory for Farm Animal Genetic Resources and Utilization, Ministry of Agriculture of China, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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20
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Xu L, Zhang LP, Yuan ZR, Guo LP, Zhu M, Gao X, Gao HJ, Li JY, Xu SZ. Polymorphism of SREBP1 is associated with beef fatty acid composition in Simmental bulls. Genet Mol Res 2013; 12:5802-9. [PMID: 24301949 DOI: 10.4238/2013.november.22.7] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The sterol regulatory element binding factor 1 gene (SREBP1) plays an important role in the biosynthesis of fatty acids and cholesterol, and in lipid metabolism. The objective of this study was to investigate the effect of genetic polymorphisms of SREBP1 on the fatty acid composition of muscle and carcass traits in Simmental bulls and Snow Dragon black cattle. The 84-bp insertion/deletion (indel) in intron 5 of the bovine SREBP1 gene was genotyped by polymerase chain reaction to investigate its associations with traits. The results showed that the 84-bp indel in intron 5 was significantly associated with palmitoleic acid (C16:1), stearic acid (C18:0), saturated fatty acids (SFA), triglycerides (TAG), and the C16 index in Simmental bulls (P < 0.05). Cattle with the LL genotype had higher palmitic acid (C16:1), triglycerides, and C16 index but lower stearic acid (C18:0) and SFA compared to those with the LS genotype (P < 0.05). In conclusion, the 84-bp indel of SREBP1 could be used as a genetic marker for selecting Simmental breeding stock for healthier fatty acid composition.
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Affiliation(s)
- L Xu
- Laboratory of Molecular Biology and Bovine Breeding, The Key Laboratory for Farm Animal Genetic Resources and Utilization, Ministry of Agriculture of China, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
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21
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Gao HJ, Zhou W, Zhang XF, Zhou CY, Qian JH. Coexistent gestational choriocarcinoma and mixed adenocarcinoma of the uterus. EUR J GYNAECOL ONCOL 2013; 34:362-367. [PMID: 24020150] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE To report the first case of a uterine gestational choriocarcinoma coexisting with an endometrial carcinoma (EC) and to discuss its possible pathogenesis. MATERIALS AND METHODS All tissues were examined histologically and monoclonal antibodies were used to evaluate the expression of HCG, HPL, P53, PTEN, and ER. Genotyping was performed on DNA extracted from the freshly dissected choriocarcinoma and the paraffin-embedded endometrial carcinoma along with parental blood DNA using multiplex STR-PCR at 16 loci. RESULTS Histology identified two distinct tumors: a uterine tumor containing cytotrophoblastic and syncytiotrophoblastic cells and a second distinct neoplasm composed of adenocarcinoma resembling endometrioid and mucinous adenocarcinoma. Genotyping of the choriocarcinoma revealed alleles from both the patient and her husband and was classified as biparental in origin. The endometrial adenocarcinoma contained only maternal alleles and was thus classified as maternal in origin. CONCLUSIONS This is the first description of the simultaneous diagnosis of a uterine gestational choriocarcinoma and an EC within the same patient. DNA genotyping and immunohistochemistry are valuable tools in distinguishing the different origins of coexisting tumors.
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Affiliation(s)
- H J Gao
- Hangzhou First People's Hospital, Hangzhou Hospital of Nanjing Medical University, Hangzhou, China
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22
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Murali P, Guo TF, Zhang YW, Narasimhan R, Li Y, Gao HJ. Atomic scale fluctuations govern brittle fracture and cavitation behavior in metallic glasses. Phys Rev Lett 2011; 107:215501. [PMID: 22181893 DOI: 10.1103/physrevlett.107.215501] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/14/2011] [Indexed: 05/31/2023]
Abstract
We perform atomistic simulations on the fracture behavior of two typical metallic glasses, one brittle (FeP) and the other ductile (CuZr), and show that brittle fracture in the FeP glass is governed by an intrinsic cavitation mechanism near crack tips in contrast to extensive shear banding in the ductile CuZr glass. We show that a high degree of atomic scale spatial fluctuations in the local properties is the main reason for the observed cavitation behavior in the brittle metallic glass. Our study corroborates with recent experimental observations of nanoscale cavity nucleation found on the brittle fracture surfaces of metallic glasses and provides important insights into the root cause of the ductile versus brittle behavior in such materials.
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Affiliation(s)
- P Murali
- Department of Engineering Mechanics, Institute of High Performance Computing, Singapore, Singapore
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23
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Yang RJ, Li JY, Zhao ZH, Gao X, Gao HJ, Xu SZ. Fas Expression and Mediated Activation of an Apoptosis Programme in Bovine Follicular Granulosa Cells In Vitro. Reprod Domest Anim 2011; 47:537-43. [DOI: 10.1111/j.1439-0531.2011.01914.x] [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: 11/28/2022]
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24
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Abstract
Under increasing tensile load, the lifetime of a single catch bond counterintuitively increases up to a maximum and then decreases exponentially like a slip bond. So far, the characteristics of single catch bond dissociation have been extensively studied. However, it remains unclear how a cluster of catch bonds behaves under tensile load. We perform computational analysis on the following models to examine the characteristics of clustered catch bonds: (i) clusters of catch bonds with equal load sharing, (ii) clusters of catch bonds with linear load sharing, and (iii) clusters of catch bonds in micropipette-manipulated cell detachment. We focus on the differences between the slip and catch bond clusters, identifying the critical factors for exhibiting the characteristics of catch bond mechanism for the multiple-bond system. Our computation reveals that for a multiple-bond cluster, the catch bond behaviour could only manifest itself under relatively uniform loading conditions and at certain stages of decohesion, explaining the difficulties in observing the catch bond mechanism under real biological conditions.
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Affiliation(s)
- L Sun
- Department of Materials Science and Engineering, National University of Singapore, Singapore
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25
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Xu ZX, Gao HJ, Zhang LM, Chen XQ, Qiao XG. The biomimetic immunoassay based on molecularly imprinted polymer: a comprehensive review of recent progress and future prospects. J Food Sci 2011; 76:R69-75. [PMID: 21535786 DOI: 10.1111/j.1750-3841.2010.02020.x] [Citation(s) in RCA: 64] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
UNLABELLED Immunoassay, based on a selective affinity of the biological antibody for its antigen, is one of the most usual analytical methods in food safety and environmental chemistry. However, it presents several drawbacks because of the nature of the antibody. Molecular imprinting technique, due to its high selectivity and stability, ease of preparation and low cost, has shown great potential in producing artificial antibodies in biomimetic immunoassays. This article focuses on the recent states, advantages, current problems and outlooks of molecularly imprinted radio, fluoro, enzyme-linked and chemiluminescent immunoassays, and biomimetic immunosensor, with special emphasis on the challenges in developing biomimetic enzyme-linked immunosorbent assays (BELISAs). The biomimetic immunoassay method will provide an important new analysis platform in food safety, although the sensitivity and specificity is relatively low. PRACTICAL APPLICATION As a new simple analysis method, the biomimetic immunoassay has attractive prospect, although some limitations were existed in real-sample assay. In this critical review, some promising solutions for overcoming its drawbacks were put forward, which may promote the more quick development and extensive application of this method in food safety.
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Affiliation(s)
- Z X Xu
- College of Food Science and Engineering, Shandong Agricultural Univ, Taian 271018, China
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26
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Cheng QH, Chen B, Gao HJ, Zhang YW. Sliding-induced non-uniform pre-tension governs robust and reversible adhesion: a revisit of adhesion mechanisms of geckos. J R Soc Interface 2011; 9:283-91. [PMID: 21775325 DOI: 10.1098/rsif.2011.0254] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Several mechanisms have been proposed in the literature to explain the robust attachment and rapid, controllable detachment of geckos' feet on vertical walls or ceilings, yet, it is still debatable, which one is ultimately responsible for geckos' extraordinary capabilities for robust and reversible adhesion. In this paper, we re-examine some of the key movements of geckos' spatula pads and seta hairs during attachment and detachment, and propose a sequence of simple mechanical steps that would lead to the extraordinary properties of geckos observed in experiments. The central subject under study here is a linear distribution of pre-tension along the spatula pad induced by its sliding motion with respect to a surface. The resulting pre-tension, together with a control of setae's pulling force and angle, not only allows for robust and strong attachment, but also enables rapid and controllable detachment. We perform computational modelling and simulations to validate the following key steps of geckos' adhesion: (i) creation of a linear distribution of pre-tension in spatula through sliding, (ii) operation of an instability envelope controlled by setae's pulling force and angle, (iii) triggering of an adhesion instability leading to partial decohesion along the interface, and (iv) complete detachment of spatula through post-instability peeling. The present work not only reveals novel insights into the adhesion mechanism of geckos, but also develops a powerful numerical simulation approach as well as additional guidelines for bioinspired materials and devices.
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Affiliation(s)
- Q H Cheng
- Department of Engineering Mechanics, Institute of High Performance Computing, Singapore 138632, Singapore
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27
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Wu XX, Yang ZP, Shi XK, Li JY, Ji DJ, Mao YJ, Chang LL, Gao HJ. Association of SCD1 and DGAT1 SNPs with the intramuscular fat traits in Chinese Simmental cattle and their distribution in eight Chinese cattle breeds. Mol Biol Rep 2011; 39:1065-71. [PMID: 21607624 DOI: 10.1007/s11033-011-0832-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2011] [Accepted: 05/05/2011] [Indexed: 10/18/2022]
Abstract
Intramuscular fat (IMF) is a key parameter for evaluation of nutritional quality of beef, with its endogenous synthesis regulated by stearoyl CoA desaturase (SCD1) and diacylglycerol-acyl transferase 1 (DGAT1) genes in cattle. The object of this research was to evaluate the effect of SCD1 and DGAT1 polymorphisms on IMF trait in beef cattle and to estimate the frequency distribution of SNPs in the two genes in Chinese cattle populations. The SCD1 and DGAT1 polymorphisms were detected by PCR-single strand conformation polymorphism (PCR-SSCP) method in Chinese Simmental cattle and their associations with IMF traits were analyzed using the general linear model (GLM). The frequency distribution of SNPs in SCD1 and DGAT1 genes were detected by PCR-SSCP method and analyzed in seven other cattle populations. The results showed significant associations of SNPs SCD1-878, SCD1-762, and DGAT1 10433 and 10434 with IMF (%) and shearing force values (SFV; kg) in Chinese Simmental cattle. A haplotype combining SCD1-878C, SCD1-762T, and DGAT1 10433 and 10434-GC had the highest IMF, marbling score and shearing force. The polymorphic investigation indicated that the frequency of SCD1-878C or SCD1-762T was significantly higher in Chinese southern cattle (Leiqiong, Yunnan High pump, BMY or Minnan Cattle) than in Chinese northern cattle (Chinese Simmental, Luxi Cattle, Bohai Black or Chinese Holstein), while the frequency of DGAT1 10433 and 10434-GC in Chinese indigenous breed (Leiqiong, Yunnan High pump, BMY, Luxi Cattle, Bohai Black, or Minnan Cattle) was significantly lower than breeds with imported blood (Chinese Simmental or Chinese Holstein). These findings demonstrated that both the SCD1 and DGAT1 SNPs were prospect genetic markers for IMF traits, and the SCD1 SNPs could be used as a genetic marker for southern or northern blood in Chinese cattle.
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Affiliation(s)
- X X Wu
- Key Lab of Animal Genetics, Breeding and Molecular Design of Jangsu Province, College of Animal Science and Technology Yangzhou University, Yangzhou 225009, People's Republic of China
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28
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Sun L, Cheng QH, Gao HJ, Zhang YW. Computational modeling for cell spreading on a substrate mediated by specific interactions, long-range recruiting interactions, and diffusion of binders. Phys Rev E Stat Nonlin Soft Matter Phys 2009; 79:061907. [PMID: 19658524 DOI: 10.1103/physreve.79.061907] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2008] [Revised: 04/28/2009] [Indexed: 05/28/2023]
Abstract
A continuum model was proposed to study cell spreading on a flat substrate mediated by specific interaction, long-range recruiting interaction, and the diffusion of binders. Specific interactions between the mobile receptors embedded in the cell membrane and ligands coated on the substrate surface result in cell adhesion to the substrate surface. This receptor-ligand interaction was described by a chemical reaction equation. Long-range recruiting interactions between the receptors and the substrate were simplified by a traction-separation law. The governing equations and boundary conditions were formulated for the entire process of cell spreading and solved using a finite element scheme. Parametric studies were conducted to investigate the effect of system parameters on the cell spreading kinetics. It is shown that kinetic factors play an important role in cell adhesion and three regimes, that is, the binder reaction limited regime, long-range recruiting force-driven binder recruitment limited regime, and the concentration gradient-driven diffusion limited regime, were identified.
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Affiliation(s)
- Lu Sun
- Department of Materials Science and Engineering, National University of Singapore, Singapore 119260, Singapore
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29
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Abstract
We develop a theoretical model to elucidate the nucleation of strained islands on patterned substrates. We show that island nucleation is directed to the preferred sites by a much lower energy barrier and smaller critical size. Strain relaxation directs island nucleation to the bottom of a pit rather than the top of a ridge as commonly perceived, while large surface energy anisotropy favors nucleation at both places. The theory explains some puzzling experimental results and provides useful guidelines for future experiments.
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Affiliation(s)
- Hao Hu
- Institute of Physics, Chinese Academy of Science, Beijing 100190, China
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30
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Zhang Q, Tong MY, Li YS, Gao HJ, Fang XC. Extensive desulfurization of diesel by Rhodococcus erythropolis. Biotechnol Lett 2006; 29:123-7. [PMID: 17091384 DOI: 10.1007/s10529-006-9209-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2006] [Revised: 09/12/2006] [Accepted: 09/13/2006] [Indexed: 10/23/2022]
Abstract
The resting cells of a new isolate of Rhodococcus erythropolis FSD-2 were used to desulfurize diesel fuels. About 97% of the total sulfur content in the hydrodesulfurized diesel was removed by the two consecutive biodesulfurization (BDS) processes with the majority ( approximately 94%) being removed in the first treatment, resulting in diesel with a sulfur content of 5.7 microg ml(-1).
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Affiliation(s)
- Q Zhang
- Fushun Research Institute of Petroleum and Petrochemicals, SINOPEC, Fushun, PR China.
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31
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Du SX, Gao HJ, Seidel C, Tsetseris L, Ji W, Kopf H, Chi LF, Fuchs H, Pennycook SJ, Pantelides ST. Selective nontemplated adsorption of organic molecules on nanofacets and the role of bonding patterns. Phys Rev Lett 2006; 97:156105. [PMID: 17155345 DOI: 10.1103/physrevlett.97.156105] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2006] [Indexed: 05/12/2023]
Abstract
A key element of functionalizing nanocrystals with organic molecules is the nontemplated selective adsorption of different molecules on different facets. Here we report scanning-tunneling-microscopy images of perylene-3,4,9,10-tetracarboxylic-dianhydride and 2,5-dimethyl-N,N'-dicyanoquinonediimine on silver, demonstrating selective adsorption on different facets. We also report first-principles calculations that account for the data and show that bonding, which controls selectivity, occurs via the end atoms, while the molecule's midregion arches away from the substrate. The results are also consistent with data that have been interpreted in terms of bonding via the midregion.
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Affiliation(s)
- S X Du
- National Laboratory of Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, P.O. Box 603, Beijing 100080, China
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32
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Gao HJ, Jiang X, Wang F, Wang DZ, Bian YR. Residual levels and bioaccumulation of chlorinated persistent organic pollutants (POPs) in vegetables from suburb of Nanjing, People's Republic of China. Bull Environ Contam Toxicol 2005; 74:673-80. [PMID: 16094881 DOI: 10.1007/s00128-005-0636-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/03/2023]
Affiliation(s)
- H J Gao
- State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, People's Republic of China
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Gao F, Chen XL, Wei P, Gao HJ, Liu YX. Expression of matrix metalloproteinase-2, tissue inhibitors of metalloproteinase-1, -3 at the implantation site of rhesus monkey during the early stage of pregnancy. Endocrine 2001; 16:47-54. [PMID: 11822827 DOI: 10.1385/endo:16:1:47] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2001] [Revised: 06/23/2001] [Accepted: 07/02/2001] [Indexed: 11/11/2022]
Abstract
We have examined the expression of MMP-2, TIMP-1, and TIMP-3 mRNA at the implantation site of rhesus monkeys during early stage of pregnancy using in situ hybridization and Northern blot analysis. The results indicate that MMP-2 mRNA was mainly localized in the chorinoic villi and epithelial plaque, suggesting that MMP-2 may be involved in the process of epithelial plaque and trophoblast invasion. TIMP-3 was specifically expressed in the cells around the spiral arteries and maternal-fetal interface. Therefore, TIMP-3 may be the main inhibitor that restricts the trophoblast invasion. The TIMP-1 mRNA was detected in trophoblast villi and maternal decidua; however, its distribution was not cell-specific, suggesting a general role in the protection of trophoblast villi and maternal decidua from proteolysis by the MMPs secreted by themselves.
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Affiliation(s)
- F Gao
- State Key Laboratory of Reproductive Biology, Chinese Academy of Sciences, Beijing, PR China
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34
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Gao HJ, Chen J, Zhang YF, Du GC. [Nutrition condition of hyaluronic acid fermentation with Streptococcus zooepidemicus]. Sheng Wu Gong Cheng Xue Bao 2000; 16:396-9. [PMID: 11059289] [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: 02/18/2023]
Abstract
Based on the analysis of metabolic pathway Streptococcous zooepidemicus for hyaluronic acid (HA) synthesis, nucleotide, especially uracil, was considered to be important to cell growth and metabolism. When 0.005 g.L-1 uracil added in the media in which yeast extract as complex nitrogen source, cell growth and HA production were increased by 32% and 34% respectively. From analysis of amino acid in fermentation process, it was show that arginine(Arg) was needed for cell metabolism, and concentration of free Arg maintained at 0 g.L-1 in fermentation process, which was proposed to limit cell growth and HA production. By shake-flask experiment HA concentration reached 0.510 g.L-1 when 0.06 g.L-1 Arg added, in the fermentation with 2.5 L fermentor, when uracil 0.005 g.L-1 and Arg 0.06 g.L-1 were added, the rate of cell growth increased, maximum of specific growth rate, concentration of HA and HA molecular weight reached 0.67 h-1, 5.2 g.L-1 and 2.15 x 10(6) Da from 0.54 h-1, 4.2 g.L-1, 2.0 x 10(6) Da, respectively.
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Affiliation(s)
- H J Gao
- Lab. of Environmental Biotechnology School of Biotechnology, Wuxi University of Light Industry
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Gao HJ, Sohlberg K, Xue ZQ, Chen HY, Hou SM, Ma LP, Fang XW, Pang SJ, Pennycook SJ. Reversible, nanometer-scale conductance transitions in an organic complex. Phys Rev Lett 2000; 84:1780-1783. [PMID: 11017624 DOI: 10.1103/physrevlett.84.1780] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/23/1999] [Indexed: 05/23/2023]
Abstract
Reversible conductance transitions are demonstrated on the molecular scale in a complex of 3-nitrobenzal malononitrile and 1, 4-phenylenediamine, by application of local electric field pulses. Both macroscopic and local current-voltage (I/V) measurements show similar electrical bistability behavior. The mechanism of the electrical bistability is discussed.
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Affiliation(s)
- HJ Gao
- Solid State Division, Oak Ridge National Laboratory, P.O. Box 2008, Oak Ridge, Tennessee 37831-6031 and Beijing Laboratory of Vacuum Physics, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing
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Du GC, Chen J, Gao HJ, Chen YG, Lun SY. [Studies on fermentation conditions for the accumulation of poly-beta-hydroxybutyrate in Alcaligenes eutrophus]. Sheng Wu Gong Cheng Xue Bao 2000; 16:103-7. [PMID: 10883288] [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: 02/16/2023]
Abstract
The results of the cultivation of Alcaligenes eutrophus showed that nitrogen limitation or exhaustion could stimulate the substantial accumulation of PHB. But the exhaustion of nitrogen source in PHB formation period would result in the rapid drop of PHB synthetic rate. Oxygen limitation could also stimulate the formation of PHB, but the content of PHB in the cell was much less than that in case of nitrogen controlled conditions. Obvious influences were observed on PHB fermentation when ammonia water feeding was stopped at different cell growth phases, and better results could be obtained when it was performed at 20 g/L to 30 g/L of residual biomass. Cell dry weight, PHB content and PHB concentration reached 61.9 g/L, 80.5% and 49.0 g/L, respectively under desired conditions.
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Affiliation(s)
- G C Du
- Lab of Environ. Biotech, School of Biotechnol., Wuxi University of Light Industry
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