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Zhang LS, Wang JY, Xu JF. [Annual review of bronchiectasis research in 2023]. Zhonghua Jie He He Hu Xi Za Zhi 2024; 47:152-156. [PMID: 38309966 DOI: 10.3760/cma.j.cn112147-20231122-00328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/05/2024]
Abstract
This review focuses on the latest advances in bronchiectasis from October 1st, 2022 to September 30th, 2023, including the etiology, diagnosis, treatment, comorbidities, and management of bronchiectasis in order to provide a reference in clinical diagnosis and treatment, and future research of bronchiectasis for domestic peers.
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Affiliation(s)
- L S Zhang
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Institute of Respiratory Medicine, School of Medicine, Tongji University, Shanghai 200433, China
| | - J Y Wang
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Institute of Respiratory Medicine, School of Medicine, Tongji University, Shanghai 200433, China
| | - J F Xu
- Department of Respiratory and Critical Care Medicine, Shanghai Pulmonary Hospital, Institute of Respiratory Medicine, School of Medicine, Tongji University, Shanghai 200433, China
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Wu DP, Bai J, Chu SL, Hao ZD, Guo XJ, Zhang LS, Li LJ. [Changes and clinical significance of erythrocyte lifespan in megaloblastic anemia]. Zhonghua Nei Ke Za Zhi 2023; 62:688-692. [PMID: 37263952 DOI: 10.3760/cma.j.cn112138-20221025-00788] [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: 06/03/2023]
Abstract
Objective: To investigate the lifespan of erythrocytes in megaloblastic anemia (MA) patients. Methods: A prospective cohort study analysis. Clinical data from 42 MA patients who were newly diagnosed at the Department of Hematology, Lanzhou University Second Hospital from January 2021 to August 2021 were analyzed, as were control data from 24 healthy volunteers acquired during the same period. The carbon monoxide breath test was used to measure erythrocyte lifespan, and correlations between erythrocyte lifespan and laboratory test indexes before and after treatment were calculated. Statistical analysis included the t-test and Pearson correlation. Results: The mean erythrocyte lifespan in the 42 newly diagnosed MA patients was (49.05±41.60) d, which was significantly shorter than that in the healthy control group [(104.13±42.62) d; t=5.13,P=0.001]. In a vitamin B12-deficient subset of MA patients the mean erythrocyte lifespan was (30.09±15.14) d, and in a folic acid-deficient subgroup it was (72.00±51.44) d, and the difference between these two MA subsets was significant (t=3.73, P=0.001). The mean erythrocyte lifespan after MA treatment was (101.28±33.02) d, which differed significantly from that before MA treatment (t=4.72, P=0.001). In MA patients erythrocyte lifespan was positively correlated with hemoglobin concentration (r=0.373), and negatively correlated with total bilirubin level (r=-0.425), indirect bilirubin level (r=-0.431), and lactate dehydrogenase level (r=-0.504) (all P<0.05). Conclusions: Erythrocyte lifespan was shortened in MA patients, and there was a significant difference between a vitamin B12-deficient group and a folic acid-deficient group. After treatment the erythrocyte lifespan can return to normal. Erythrocyte lifespan is expected to become an informative index for the diagnosis and treatment of MA.
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Affiliation(s)
- D P Wu
- Department of Hematology, Lanzhou University Second Hospital, Key Laboratory of Hematology in Gansu Province, National Hematology Clinical Medical Research Center of Gansu Province (Gansu Hematology Clinical Medical Research Center), Lanzhou 730030, China
| | - J Bai
- Department of Hematology, Lanzhou University Second Hospital, Key Laboratory of Hematology in Gansu Province, National Hematology Clinical Medical Research Center of Gansu Province (Gansu Hematology Clinical Medical Research Center), Lanzhou 730030, China
| | - S L Chu
- Department of Hematology, Lanzhou University Second Hospital, Key Laboratory of Hematology in Gansu Province, National Hematology Clinical Medical Research Center of Gansu Province (Gansu Hematology Clinical Medical Research Center), Lanzhou 730030, China
| | - Z D Hao
- Department of Hematology, Lanzhou University Second Hospital, Key Laboratory of Hematology in Gansu Province, National Hematology Clinical Medical Research Center of Gansu Province (Gansu Hematology Clinical Medical Research Center), Lanzhou 730030, China
| | - X J Guo
- Department of Hematology, Lanzhou University Second Hospital, Key Laboratory of Hematology in Gansu Province, National Hematology Clinical Medical Research Center of Gansu Province (Gansu Hematology Clinical Medical Research Center), Lanzhou 730030, China
| | - L S Zhang
- Department of Hematology, Lanzhou University Second Hospital, Key Laboratory of Hematology in Gansu Province, National Hematology Clinical Medical Research Center of Gansu Province (Gansu Hematology Clinical Medical Research Center), Lanzhou 730030, China
| | - L J Li
- Department of Hematology, Lanzhou University Second Hospital, Key Laboratory of Hematology in Gansu Province, National Hematology Clinical Medical Research Center of Gansu Province (Gansu Hematology Clinical Medical Research Center), Lanzhou 730030, China
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3
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Liao MJ, Zhang LS. [Standardized diagnosis and treatment of iron deficiency and iron-deficiency anemia]. Zhonghua Nei Ke Za Zhi 2023; 62:722-727. [PMID: 37263959 DOI: 10.3760/cma.j.cn112138-20230210-00074] [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: 06/03/2023]
Affiliation(s)
- M J Liao
- Lanzhou University Second Medical College, Lanzhou 730030, China
| | - L S Zhang
- Lanzhou University Second Medical College, Lanzhou 730030, China Department of Hematology, Lanzhou University Second Hospital, Key Laboratory of Hematology in Gansu Province, National Hematology Clinical Medical Research Center of Gansu Province (Gansu Hematology Clinical Medical Research Center), Lanzhou 730030, China
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Wu JL, Hu MC, Wang Q, Liu DH, Zhang LS, Zhu L, Sun CS, Cao ZG, Wang TP. [Comparison of pathogenicity and gene expression profiles between adult Schistosoma japonicum isolated from hilly and marshland and lake regions of Anhui Province]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2022; 34:580-587. [PMID: 36642897 DOI: 10.16250/j.32.1374.2022031] [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: 01/17/2023]
Abstract
OBJECTIVE To compare the differences in pathogenicity and gene expression profiles between adult Schistosoma japonicum isolated from hilly and marshland and lake regions of Anhui Province, so as to provide the scientific evidence for formulating the precise schistosomiasis control strategy in different endemic foci. METHODS C57BL/6 mice were infected with cercariae of S. japonicum isolates from Shitai County (hilly regions) and Susong County (marshland and lake regions) of Anhui Province in 2021, and all mice were sacrificed 44 days post-infection and dissected. The worm burdens, number of S. japonicum eggs deposited in the liver, and the area of egg granulomas in the liver were measured to compare the difference in the pathogenicity between the two isolates. In addition, female and male adult S. japonicum worms were collected and subjected to transcriptome sequencing, and the gene expression profiles were compared between Shitai and Susong isolates of S. japonicum. The differentially expressed genes (DEGs) were subjected to Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment analyses. RESULTS The total worm burdens [(14.50 ± 3.96) worms/mouse vs. (16.10 ± 3.78) worms/mouse; t = 0.877, P = 0.392], number of female and male paired worms [(4.50 ± 0.67) worms/mouse vs. (5.10 ± 1.45) worms/mouse; t = 1.129, P = 0.280], number of unpaired male worms [(5.50 ± 4.01) worms/mouse vs. (5.60 ± 1.69) worms/mouse; t = 0.069, P = 0.946], number of eggs deposited in per gram liver [(12 116.70 ± 6 508.83) eggs vs. (16 696.70 ± 4 571.56) eggs; t = 1.821, P = 0.085], and area of a single egg granuloma in the liver [(74 359.40 ± 11 766.34) µm2 vs. (74 836.90 ± 13 086.12) µm2; t = 0.081, P = 0.936] were comparable between Shitai and Susong isolates of S. japonicum. Transcriptome sequencing identified 584 DEGs between adult female worms and 1 598 DEGs between adult male worms of Shitai and Susong isolates of S. japonicum. GO enrichment analysis showed that the DEGs between female adults were predominantly enriched in biological processes of stimulus response, cytotoxicity, multiple cell biological processes, metabolic processes, cellular processes and signaling pathways, cellular components of cell, organelles and cell membranes and molecular functions of binding and catalytic ability, and KEGG enrichment analysis showed that these DEGs were significantly enriched in pathways of vascular endothelial growth factor signaling, glutathione metabolism, arginine and proline metabolism. In addition, the DEGs between male adults were predominantly enriched in biological processes of signaling transduction, multiple cell biological processes, regulation of biological processes, metabolic processes, development processes and stimulus responses, cellular components of extracellular matrix and cell junction and molecular functions of binding and catalytic ability, and these DEGs were significantly enriched in pathways of Wnt signaling, Ras signaling, natural killer cells-mediated cytotoxicity, extracellular matrix-receptor interactions and arginine biosynthesis. CONCLUSIONS There is no significant difference in the pathogenicity between S. japonicum isolates from hilly and marshland and lake regions of Anhui Province; however, the gene expression profiles vary significantly between S. japonicum isolates.
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Affiliation(s)
- J L Wu
- School of Basic Medical Sciences, Wannan Medical College, Wuhu, Anhui 241002, China.,Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230031, China
| | - M C Hu
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230031, China
| | - Q Wang
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230031, China
| | - D H Liu
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230031, China
| | - L S Zhang
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230031, China
| | - L Zhu
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230031, China
| | - C S Sun
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230031, China
| | - Z G Cao
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230031, China
| | - T P Wang
- Anhui Provincial Institute of Schistosomiasis Control, Hefei, Anhui 230031, China
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Zhang LS, Wang SH, Deng Y, Zhao L, Liu ZW, Lu X. [The versions of Shiguzhai Hui Ju Jian Bian Dan Fang by Wu Mianxue]. Zhonghua Yi Shi Za Zhi 2022; 52:362-368. [PMID: 36624677 DOI: 10.3760/cma.j.cn112155-20220526-00072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/19/2023]
Abstract
Shiguzhai Hui Ju Jian Bian Dan Fang, was the only medical book for prescription and formula collected and compiled by Wu Mianxue in the period of the Wanli in the Ming Dynasty (1573-1620). It had seven volumes in total with six of them popular at that time. The volumes contained 1,460 folk formula and clinical prescriptions which were divided into 111 categories based on their corresponding symptoms of diseases. The set was issued in the beginning of the 17th century, with only three subsets of the volumes left in China today. The three remained versions were the subset of volumes 4-5 left in the Ming Dynasty in the Medical College of Tianjin, the subset of volumes 1-2 and 6-7, with preface, left in the seventeenth of the Shun Zhi Period in the Qing Dynasty (1660) in the Shanghai University of Chinese Medicine and the subset of volumes 4 and 6-7 from time unknown. Additionally, three unabridged versions were found in the Cabinet Library of the National Archives of Japan. They were the Ming version with preface of the seventeenth of the Shun Zhi Period in the Qing Dynasty and a hand-copied version left in the Edo period. It was found that the preface in the seventeenth of the Shun Zhi Period in the Qing Dynasty in both of these versions in China as well as the version in Japan, were counterfeit. The main texts in these versions were edited according to the Ming version. The hand-copied version in Japan was transcribed by Kasahara Eisan and edited by Tanba Motoken according to the Ming version in the late Edo Period.
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Affiliation(s)
- L S Zhang
- School of Traditional Chinese Medicine, Anhui University of Traditional Chinese Medicine, Hefei 230012, China
| | - S H Wang
- School of Traditional Chinese Medicine, Anhui University of Traditional Chinese Medicine, Hefei 230012, China
| | - Y Deng
- Library of Anhui University of Traditional Chinese Medicine, Hefei 230012, China
| | - L Zhao
- School of Traditional Chinese Medicine, Anhui University of Traditional Chinese Medicine, Hefei 230012, China
| | - Z W Liu
- School of Traditional Chinese Medicine, Anhui University of Traditional Chinese Medicine, Hefei 230012, China
| | - X Lu
- Institute of Medical History Literature, Anhui Academy of Chinese Medicine Sciences, Hefei 230012, China
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He JC, Chen XF, Wang TP, Gao FH, Tao W, Dai B, Ding SJ, Liu T, Li Y, Wang H, Mao WF, Zhang LS, Xu XJ, Zhang SQ. [Investigation on prevalence of Schistosoma japonicum infections in wild mice in Shitai County, Anhui Province, 2018]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2022; 34:622-625. [PMID: 36642903 DOI: 10.16250/j.32.1374.2022039] [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: 01/17/2023]
Abstract
OBJECTIVE To investigate the prevalence of Schistosoma japonicum infection in wild mice in Shitai County, Anhui Province, so as to provide insights into precise control of the source of S. japonicum infections. METHODS Wild mice were captured using the trapping method for three successive nights at snail-infested settings from Jitan Village of Jitan Township, and Shiquan Village and Xibai Village of Dingxiang Township, Shitai County, Anhui Province in June and October, 2018. All trapped wild mice were sacrificed and liver and mesenteric vein specimens were collected for detection of S. japonicum eggs using microscopy, while the fecal samples in mouse intestines were collected for identification of S. japonicum infections using Kato-Katz technique. In addition, the population density of trapped wild mice was estimated and the prevalence of S. japonicum infection was calculated in trapped wild mice. RESULTS A total of 376 wild mice were trapped from three villages in Shitai County. The population density of trapped wild mice was 9.1% (376/4 124), and the prevalence of S. japonicum infection was 24.2% (91/376) in trapped wild mice. The highest prevalence of S. japonicum infection was detected in Shiquan Village of Dingxiang Township (30.1%), and the lowest prevalence was seen in Xibai Village of Dingxiang Township; however, there was no significant difference in the prevalence of S. japonicum infection in trapped wild mice among three villages (χ2= 4.111, P > 0.05). In addition, there was no significant difference in the prevalence of S. japonicum infection in wild mice captured between on June (26.8%, 34/127) and October (22.9%, 57/249) (χ2 = 0.690, P = 0.406). The trapped wild mice included 6 species, including Rattus norvegicus, Niviventer niviventer, R. losea, Apodemus agrarius, Mus musculus and N. coning, and the two highest prevalence of S. japonicum infection was detected in R. losea (34.9%, 22/63) and R. norvegicus (31.2%, 44/141). CONCLUSIONS The prevalence of S. japonicum infections is high in wild mice in Shitai County, and there is a natural focus of schistosomiasis transmission in Shitai County.
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Affiliation(s)
- J C He
- Anhui Institute of Schistosomiasis Control, Hefei, Anhui 230000, China.,Co-first authors
| | - X F Chen
- Shitai County Station of Schistosomiasis Control, Shitai, Anhui 245100, China.,Co-first authors
| | - T P Wang
- Anhui Institute of Schistosomiasis Control, Hefei, Anhui 230000, China
| | - F H Gao
- Anhui Institute of Schistosomiasis Control, Hefei, Anhui 230000, China
| | - W Tao
- Shitai County Station of Schistosomiasis Control, Shitai, Anhui 245100, China
| | - B Dai
- Anhui Institute of Schistosomiasis Control, Hefei, Anhui 230000, China
| | - S J Ding
- Anhui Institute of Schistosomiasis Control, Hefei, Anhui 230000, China
| | - T Liu
- Anhui Institute of Schistosomiasis Control, Hefei, Anhui 230000, China
| | - Y Li
- Chizhou Center for Disease Control and Prevention, Anhui Pmvince, China
| | - H Wang
- Anhui Institute of Schistosomiasis Control, Hefei, Anhui 230000, China
| | - W F Mao
- Chizhou Center for Disease Control and Prevention, Anhui Pmvince, China
| | - L S Zhang
- Anhui Institute of Schistosomiasis Control, Hefei, Anhui 230000, China
| | - X J Xu
- Anhui Institute of Schistosomiasis Control, Hefei, Anhui 230000, China
| | - S Q Zhang
- Anhui Institute of Schistosomiasis Control, Hefei, Anhui 230000, China
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Zhang LS, Ling PY, Chen Y, Chen DZ. [Progress in the effect of human epididymis protein 4 on sperm maturation]. Zhonghua Yu Fang Yi Xue Za Zhi 2022; 56:1123-1126. [PMID: 35922242 DOI: 10.3760/cma.j.cn112150-20220314-00236] [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
Human epididymis protein 4(HE4) is a secretory glycoprotein found in human distal epididymis epithelial cells. It is often used in the early diagnosis, efficacy evaluation and monitoring of ovarian cancer, and also has been considered as an effective serum marker for many other types of cancer. However, its function in the process of sperm maturation is not fully unknown. The maturation of sperm in epididymis is characterized by the acquisition of motility and fertilization. As a member of the whey acid protein (WAP) family, several studies proposed the importance of HE4 in the maturity of sperm in epididymis. This article reviews the effect of HE4 on spermatozoa maturation in epididymis, which provides basis for the evaluation of male reproductive ability, early detection, early diagnosis and pathogenesis of male infertility.
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Affiliation(s)
- L S Zhang
- State Key Laboratory of Reproductive Medicine of Nanjing Medical university, Nanjing 210000, China
| | - P Y Ling
- State Key Laboratory of Reproductive Medicine of Nanjing Medical university, Nanjing 210000, China
| | - Y Chen
- Research Institute for Reproductive Health and Genetic Diseases, Wuxi 214002, China
| | - D Z Chen
- Research Institute for Reproductive Health and Genetic Diseases, Wuxi 214002, China
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Yao F, Jiang DD, Guo WH, Guo LS, Gao MM, Bai Y, Wang X, Zhang LS. FABP4 inhibitor attenuates inflammation and endoplasmic reticulum stress of islet in leptin receptor knockout rats. Eur Rev Med Pharmacol Sci 2021; 24:12808-12820. [PMID: 33378030 DOI: 10.26355/eurrev_202012_24182] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE Metabolic syndrome is characterized by abdominal obesity, hypertriglyceridemia and hyperglycemia. Fatty acid binding protein 4 (FABP4), as a member of intracellular lipid chaperones, is not only engaged in lipid transport but involved in inflammation and insulin resistance. The present study was to investigate the effects of BMS309403, a specific FABP4 inhibitor, on metabolic syndrome and its possible molecular mechanisms in islets. MATERIALS AND METHODS Leptin receptor knockout (Lepr-/-) rat, a novel and representative animal model of metabolic syndrome, was adopted in this study. Lepr-/- male rats and their wild littermates were grouped and intragastrically administered with BMS309403. Glucose Tolerance Test (GTT) and Insulin Tolerance Test (ITT) were performed on all rats. Serum insulin was detected by ELISA. The metabolic characters, as well as liver and kidney functions, were evaluated by serum biochemical assay. Immunohistochemistry and Western blot were adopted to detect the expression levels of FABP4, CD68, GRP78, ATF6, p-IRE1a, and Cleaved caspase-3. RESULTS Lepr-/- rats showed prominent characteristics of metabolic syndrome with increased FABP4, inflammatory infiltration, ER stress and apoptosis in islets. BMS309403 administration attenuated inflammation, ER stress and apoptosis in Lepr-/- rat islets while stimulating insulin secretion as well as improving manifestation of metabolic syndrome without hepatic and renal toxicity. CONCLUSIONS FABP4 increased in Lepr-/- rat islets and might be involved in the regulation of islet inflammation and apoptosis via ER stress. FABP4 inhibitor BMS309403 could ameliorate islet inflammation and apoptosis in metabolic syndrome through suppressing ER stress.
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Affiliation(s)
- F Yao
- Department of Pathology, Hebei Medical University, Shijiazhuang, Hebei, China.
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Tan MF, Zou G, Wei Y, Liu WQ, Li HQ, Hu Q, Zhang LS, Zhou R. Protein-protein interaction network and potential drug target candidates of Streptococcus suis. J Appl Microbiol 2021; 131:658-670. [PMID: 33249680 DOI: 10.1111/jam.14950] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 11/15/2020] [Accepted: 11/25/2020] [Indexed: 02/06/2023]
Abstract
AIMS This study aimed to explore potential drug targets of Streptococcus suis at the system level. METHODS AND RESULTS A homologous protein mapping method was used in the construction of a protein-protein interaction (PPI) network of S. suis, which presented 1147 non-redundant interaction pairs among 286 proteins. The parameters of PPI networks were calculated and showed scale-free network properties. In all, 41 possibly essential proteins identified from 47 highly connected proteins were selected as potential drug target candidates. Of these proteins, 30 were already regarded as drug targets in other bacterial species. Six transporters with high connections to other functional proteins were identified as probably not essential but important functional proteins. Afterward, the subnetwork centred with cell division protein FtsZ was used in confirming the PPI network through bacterial two-hybrid analysis. CONCLUSIONS The predicted PPI network covers 13·04% of the proteome in S. suis. The selected 41 potential drug target candidates are conserved between S. suis and several model bacteria. SIGNIFICANCE AND IMPACT OF THE STUDY The predictions included proteins known to be drug targets, and a verifying experiment confirmed the reliability of predicted interactions. This work is the first to present systematic computational PPI data for S. suis and provides potential drug targets, which are valuable in exploring novel anti-streptococcus drugs.
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Affiliation(s)
- M-F Tan
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China.,Institute of Animal Husbandry and Veterinary Medicine, Jiangxi Academy of Agricultural Sciences, Nanchang, China
| | - G Zou
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China
| | - Y Wei
- Institute of Animal Husbandry and Veterinary Medicine, Jiangxi Academy of Agricultural Sciences, Nanchang, China
| | - W-Q Liu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China
| | - H-Q Li
- Institute of Animal Husbandry and Veterinary Medicine, Jiangxi Academy of Agricultural Sciences, Nanchang, China
| | - Q Hu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China
| | - L-S Zhang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China
| | - R Zhou
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University College of Veterinary Medicine, Wuhan, China.,International Research Center for Animal Disease (Ministry of Science & Technology of China), Wuhan, China.,Cooperative Innovation Center of Sustainable Pig Production, Wuhan, China
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Cheng ZY, Liu LY, Lei YJ, Li HL, Zhang LS, Li RJ, Huang QX. Modeling and improvement of a low-frequency micro-accelerometer. Rev Sci Instrum 2021; 92:025002. [PMID: 33648148 DOI: 10.1063/5.0024940] [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] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 01/06/2021] [Indexed: 06/12/2023]
Abstract
A sensitivity- and resolution-improving method for a low-frequency micro-vibration accelerometer is presented in this paper. A sensitivity model of the measurement system is derived and established. The key parameters that limit the sensitivity and the resolution of the accelerometer were identified through the sensitivity coefficient analysis method. The structural parameters and the signal process method were then optimized. Experimental results show that the sensitivity of the accelerometer has improved from 1.10 V/(m/s2) to 19.21 V/(m/s2), and the resolution has improved from 1.47 mm/s2 to 0.21 mm/s2. The lowest working frequency range has expanded from 1 Hz to 0.7 Hz. The presented method is effective and cheap and can be applied to other sensors.
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Affiliation(s)
- Z Y Cheng
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - L Y Liu
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - Y J Lei
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - H L Li
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - L S Zhang
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - R J Li
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
| | - Q X Huang
- School of Instrument Science and Opto-Electronics Engineering, Hefei University of Technology, Hefei 230009, China
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Tian FQ, Zhang LS, Li JH, Tang MQ, Jiang J, Cheng XH, Zhang XC, Jiang M. [Venetoclax combined with azacitidine in the treatment of elderly patients with acute myeloid leukemia or myeloid sarcoma: Three cases reports and literature review]. Zhonghua Xue Ye Xue Za Zhi 2021; 41:694-696. [PMID: 32942828 PMCID: PMC7525173 DOI: 10.3760/cma.j.issn.0253-2727.2020.08.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- F Q Tian
- Department of Hematology, Longgang District People's Hospital of Shenzhen, Shenzhen 518172, China
| | - L S Zhang
- Department of Hematology, Lanzhou University Second Hospital, Lanzhou 730030, China
| | - J H Li
- Department of Hematology, Longgang District People's Hospital of Shenzhen, Shenzhen 518172, China
| | - M Q Tang
- Department of Hematology, Longgang District People's Hospital of Shenzhen, Shenzhen 518172, China
| | - J Jiang
- Department of Hematology, Longgang District People's Hospital of Shenzhen, Shenzhen 518172, China
| | - X H Cheng
- Department of Hematology, Longgang District People's Hospital of Shenzhen, Shenzhen 518172, China
| | - X C Zhang
- Department of Hematology, Longgang District People's Hospital of Shenzhen, Shenzhen 518172, China
| | - M Jiang
- Department of Hematology, Longgang District People's Hospital of Shenzhen, Shenzhen 518172, China
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Zhang LS, Ma HG, Sun FH, Zhao WC, Li G. MiR-203 inhibits the malignant behavior of prostate cancer cells by targeting RGS17. Eur Rev Med Pharmacol Sci 2020; 23:5667-5674. [PMID: 31298318 DOI: 10.26355/eurrev_201907_18303] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE The aim of this study was to explore the role of microRNA-203 (miR-203) in Prostate Cancer (PCa), and to further verify its influence in PCa cell function. PATIENTS AND METHODS The expression level of miR-203 in 55 clinical PCa cases and cell lines was detected by qRT-PCR. Then, the target gene of miR-203 in PCa cells was predicted and verified by online prediction software and Luciferase reporter gene assay, respectively. Furthermore, the role of miR-203 in PCa cell proliferation, colony formation, cell cycle and metastasis capacities was detected through a series of in vitro experiments. RESULTS The expression of miR-203 in PCa tissues and cells was significantly reduced when compared with that of normal tissues and cells. In searching for potential downstream targets of miR-203, a regulator of G-protein signaling 17 (RGS17) entered our sight due to its active role in a variety of malignant tumors. More importantly, the negative regulation of RGS17 by miR-203 was verified by Luciferase reporter gene assay. Functional experiments demonstrated that low expression of RGS17 in PCa cells induced by up-regulation of miR-203 could significantly restrain the proliferation, invasion and migration capacities of PCa cells. CONCLUSIONS MiR-203 served as a tumor suppressor gene in PCa. Through targeting RGS17, miR-203 significantly controlled the malignant behavior of PCa cells. Our findings revealed that miR-203/RGS17 axis might be a potential therapeutic target for the treatment of PCa.
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Affiliation(s)
- L-S Zhang
- Department of Urology, The First Affiliated Hospital of Soochow University, Suzhou, China.
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Abstract
In this Rapid Communication, the Rayleigh-Taylor instability (RTI) along the density interfaces of gravity current fronts is analyzed. Both the location and the spanwise wave number of the most unstable mode determined by the local dispersion relation agree with those of the strongest perturbation obtained from numerical simulations, suggesting that the original formation mechanism of lobes and clefts at the current front is RTI. Furthermore, the predictions of the semi-infinite RTI model, i.e., the original dominating spanwise wave number of the Boussinesq current substantially depends on the Prandtl number and has a 1/3 scaling law with the Grashof number, are confirmed by the three-dimensional numerical simulations.
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Affiliation(s)
- C Y Xie
- CAPT-HEDPS, SKLTCS, Collaborative Innovation Center of IFSA, Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, People's Republic of China
| | - J J Tao
- CAPT-HEDPS, SKLTCS, Collaborative Innovation Center of IFSA, Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, People's Republic of China
| | - L S Zhang
- CAPT-HEDPS, SKLTCS, Collaborative Innovation Center of IFSA, Department of Mechanics and Engineering Science, College of Engineering, Peking University, Beijing 100871, People's Republic of China
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Wang L, Zhang LS, Wang C, Zhang F, Shao H. [Analysis of occupational health surveillance for workers on offshore platforms]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2019; 37:236-240. [PMID: 31189254 DOI: 10.3760/cma.j.issn.1001-9391.2019.03.021] [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 understand the status of occupational health surveillance for workers on offshore platforms. Methods: The research period was from 2014 to 2016. From 2014 to 2016, a cross-sectional survey method was adopted to select 429 people for offshore oil production, drilling and operation platforms and their first-line workers to conduct workplace occupational hygiene. Investigation, occupational hazard factor testing, occupational health check of workers, collation and statistical analysis of surveys and test data, and comparison of occupational health surveillance among workers of different types of offshore platforms. Results: From 2014 to 2016, the results of chemical harmful factors detection of occupational diseases in the offshore platform were in line with the national occupational health exposure limit requirements. The noise of some platform posts exceeded the standard, such as: oil platform oil, oil and oil and gas processing workers, diesel engines for drilling and working platforms. Worker noise exceeds national occupational health limits p[L(ex, 8 h)>85 dB(A)].There was a statistically significant difference in the occupational health of workers on the same platform with the age and length of service (P<0.05). Conclusion: Workers on different platforms at sea may be subject to different levels of occupational health damage, and the occupational hazards brought by noise to platform workers are particularly prominent.
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Affiliation(s)
- L Wang
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250062, China; Shandong Academy of Occupational Health and Occupational Medicine, Jinan 250062, China
| | - L S Zhang
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250062, China; Shandong Academy of Occupational Health and Occupational Medicine, Jinan 250062, China
| | - C Wang
- School of Medicine and Life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Jinan 250062, China; Shandong Academy of Occupational Health and Occupational Medicine, Jinan 250062, China
| | - F Zhang
- Shandong Academy of Occupational Health and Occupational Medicine, Jinan 250062, China
| | - H Shao
- Shandong Academy of Occupational Health and Occupational Medicine, Jinan 250062, China
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Zhang BF, Cheng ML, Zhang Q, Zhao XK, Yu L, Yang J, Deng KS, Zhang LS, Wang J, Hu YX. [Clinical study on blocking mother-to-child transmission of hepatitis B virus with high viral load and HBeAg positivity during pregnancy in Guizhou province]. Zhonghua Gan Zang Bing Za Zhi 2019; 26:945-950. [PMID: 30669789 DOI: 10.3760/cma.j.issn.1007-3418.2018.12.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To observe the efficacy and safety related measures by blocking mother-to-child transmission of hepatitis B virus with high viral load and HBeAg positivity during pregnancy in Guizhou province. Methods: Outpatient and inpatient cases of the Department of Infectious Diseases and Obstetrics of Guizhou Medical University Affiliated Hospitals from May 2016 to July 2017 were retrospectively divided into intervention group, non-intervention group and non- hepatitis B pregnant women group; with 75 cases in each group. HBsAg and HBeAg were positive in the intervention group. Pregnant women with HBV DNA ≥10(6) IU/ml were treated with anti-HBV therapy for 24 to 28 weeks of gestation until delivery. According to oral drugs, they were divided into tenofovir (TDF) group or telbivudine (LDT) group, non-intervention group (HBsAg and HBeAg positive), HBV DNA positive pregnant women, pregnant women with no anti-HBV drugs, non-hepatitis B pregnant women (normal pregnant women without HBV infection). Infants and young children born to the three groups of women were immunized with the national viral hepatitis B action plan. The gestational weeks and Apgar scores at birth, delivery mode, feeding mode, sex and 7-months-old age were observed and counted. Serum hepatitis B markers (HBVM) and HBV DNA were quantitatively detected. HBVM was detected by time-resolved fluorescence immunoassay (TRFIA), and HBV DNA was detected by real-time PCR (FQ-PCR). The changes of liver parameters, HBsAg, HBeAg, HBV DNA, adverse drug reactions and treatment response of pregnant intervention group before medication (12-24 weeks of gestation), 4 weeks of medication (28-32 weeks of gestation), 36-40 weeks of gestation (36-40 weeks of gestation) were statistically calculated. A t-test was used to compare the data between the measurements. Data measurements within the groups were analyzed using rank -sum test. Results: In the intervention group, therapeutic medications showed no differences in demographic and clinical characteristics between TDF group and LDT group, including liver parameters, HBsAg, HBeAg and log10HBV DNA level. Compared with pre-treatment (TDF group: 4.84 ± 2.01; LDT group: 5.08 ± 1.99), TDF and LDT were significantly lower at the end of pregnancy (TDF group: 3.06 ± 0.66; LDT group: 3.51 ± 1.20). P < 0.05); and the treatment response rate was 100%. There were no serious adverse events in the intervention group. Infants and young children (7-months-old) in the intervention group had negative HBsAg, HBeAg and HBV DNA. The mother-to-child transmission rate of HBV was zero, with blocking rate of 100%. In addition, both infants and young children had different degrees of hepatitis B protective antibodies (anti-HBs, M: 144.33), and their antibody titers were higher than that of non-intervention group (anti-HBs, M: 65.91) and non-hepatitis B pregnant women (anti-HBs, M: 58.43). The difference was statistically significant (P < 0.05), and there was no significant correlation between the use of antiviral and the way of delivery and feeding. Outcomes of mother-to-child transmission of HBV infection in infants and young children (7-months-old) delivered by three groups of pregnant women in the non-intervention groups had 20.0% (15/75)/ 17.3% (13/75) HBsAg/HBeAg positivity rate, and 17.3% (13/75) HBV DNA positivity rate. Overall, mother-to-child transmission rate of HBV infection was 20% (15/75). Furthermore, the relationship between mother's HBV DNA load and infant HBV infection in the non-intervention group showed mother's HBV DNA ≥10(6) IU/ml. Conclusion: In the non-intervention group, mother-to-child transmission of HBV occurred, and infected mothers HBV DNA was ≥106 IU/ml before delivery. This suggests that HBeAg positive and high load HBV DNA replication were independent risk factors for mother-to-child transmission of hepatitis B. Therefore, prenatal drug intervention and postpartum standard immune blockade are necessary for high-risk pregnant women with hepatitis B to achieve zero mother-to-child transmission of hepatitis B in real- clinical practice.
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Affiliation(s)
- B F Zhang
- 550004 Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China (now Suzhou University 215006)
| | - M L Cheng
- 550004 Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - Q Zhang
- 550004 Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - X K Zhao
- 550004 Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - L Yu
- Prenatal Diagnosis Center, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - J Yang
- 550004 Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - K S Deng
- 550004 Department of Infection, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - L S Zhang
- Hepatitis Laboratory, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - J Wang
- Clinical Research Heart, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - Y X Hu
- Prenatal Diagnosis Center, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
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Zou DY, Coudron TA, Zhang LS, Gu XS, Xu WH, Liu XL, Wu HH. Performance of Arma chinensis reared on an artificial diet formulated using transcriptomic methods. Bull Entomol Res 2019; 109:24-33. [PMID: 29463319 DOI: 10.1017/s0007485318000111] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
An artificial diet formulated for continuous rearing of the predator Arma chinensis was inferior to natural prey when evaluated using life history parameters. A transcriptome analysis identified differentially expressed genes in diet-fed and prey-fed A. chinensis that were suggestive of molecular mechanisms underlying the nutritive impact of the artificial diet. Changes in the diet formulation were made based on the transcriptome analysis and tested using life history parameters. The quantity of pig liver, chicken egg, tuna fish, biotin, nicotinamide, vitamin B6, thiamine, riboflavin, vitamin C, L-glutamine, and sucrose was reduced, and wheat germ oil, calcium pantothenate and folic acid were increased. Ecuadorian shrimp was added as a partial substitute for tuna fish. Several parameters improved over six generations, including increased egg viability, and decreased egg and adult cannibalism. Additionally, several parameters declined, including longer developmental times for 2nd-5th instars, and decreased nymphal weights. The improvements in life history parameters support the use of transcriptome analyses to help direct formulation improvements. However, the decline in some parameters suggests that additional information, e.g., proteomic data, may be useful as well to maximize diet formulations.
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Affiliation(s)
- D Y Zou
- Insect Pest Control Laboratory, Tianjin Institute of Plant Protection, Tianjin Academy of Agricultural Sciences,Tianjin 300384,China
| | - T A Coudron
- Biological Control of Insects Research Laboratory, USDA-Agricultural Research Service,Columbia, MO 65203,USA
| | - L S Zhang
- USDA-ARS Sino-American Biological Control Laboratory, Institute of Plant Protection, Chinese Academy of Agricultural Sciences,Beijing 100193,China
| | - X S Gu
- Insect Pest Control Laboratory, Tianjin Institute of Plant Protection, Tianjin Academy of Agricultural Sciences,Tianjin 300384,China
| | - W H Xu
- Insect Pest Control Laboratory, Tianjin Institute of Plant Protection, Tianjin Academy of Agricultural Sciences,Tianjin 300384,China
| | - X L Liu
- Insect Pest Control Laboratory, Tianjin Institute of Plant Protection, Tianjin Academy of Agricultural Sciences,Tianjin 300384,China
| | - H H Wu
- Agricultural Analysis and Test Center, Tianjin Agricultural University,Tianjin 300384,China
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Lu CD, Sun XC, Zhang LS, Zhang F. [PAHs exposure and occupational health risk assessment of workers in coal tar pitch factory]. Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi 2018; 36:38-41. [PMID: 29495178 DOI: 10.3760/cma.j.issn.1001-9391.2018.01.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To Investigation of industrial sites involving coal tar pitch to detect PAHs in the occupational environment and to assess their occupational health risks to workers. Methods: Taking coal tar pitch enterprises as the research object, and making the occupational health field investigation and inspection. Detecting the 16 PAHs in the samples by high performance liquid chromatography (HPLC) , analyze the PAHs exposed dose of the workers in the place, and using cumulative toxic equivalent quantity method, loss of life expectancy method and carcinogenic risk factor method to assessment worker's occupational health risk. Results: In the 15 posts involved, Some workers' exposed to the total concentration of PAHs is higher than others, the maximum exposure concentration is 1931.45ng/m3. There are different hazard risk levels in different working post due to different processes.The lifetime risk of workers is significantly higher than the acceptable range. Some workers has higher carcinogenic risk and workers' life expectancy loss is up to 1033.95 hours. Conclusion: Part of the coal tar pitch workers exposed to higher concentrations of PAHs, and beyond the occupational exposure limits.And there is a high occupational health risk due to high exposure to PAHs.
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Affiliation(s)
- C D Lu
- School of Medicine and life Sciences, University of Jinan-Shandong Academy of Medical Sciences, Shandong Academy of Occupational Health and Occupational Medicine, Jinan 250062, China
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Zhang LS, Zhang J, Zou XM. Perioperative nursing intervention on patients undergoing laparoscopic gastric stromal tumor resection. J BIOL REG HOMEOS AG 2018; 32:153-158. [PMID: 29504380] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
This study aimed to investigate the effectiveness of perioperative nursing intervention on patients undergoing laparoscopic gastric stromal tumor resection. Sixty patients with gastric stromal tumor were selected from our hospital and evenly divided into group A and group B. Patients in both groups underwent laparoscopic resection. Patients in group A were given conventional nursing intervention before and after surgery, while those in group B were given comprehensive nursing intervention. Various indicators were compared between the two groups. The amount of bleeding of group B was less than that of group A, and the first anal exsufflation of group B was also earlier than that of group A; the differences had statistical significance (p less than 0.05). Patients in group B felt less pain than patients in group A; except for 72 h after surgery, difference of pain degree between group A and B had statistical significance in other periods (p less than 0.05); the number of cases with complications and categories of complications of group B were less than those of group A, and the difference had statistical significance (p less than 0.05). The efficacy satisfaction of group B was also higher than that of group A, and the difference was statistically significant (p less than 0.05). Perioperative nursing intervention is beneficial and positive and has bright development prospects.
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Affiliation(s)
- L S Zhang
- Department of Gastrointestinal Surgery, the 2nd Affiliated Hospital of Harbin Medical University, Heilongjiang, China
| | - J Zhang
- Department of Gastrointestinal Surgery, the 2nd Affiliated Hospital of Harbin Medical University, Heilongjiang, China
| | - X M Zou
- The 7th Ward, Department of General Surgery, the 2nd Affiliated Hospital of Harbin Medical University, Heilongjiang, China
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Zeng Y, Zhang L, Zhu W, He H, Sheng H, Tian Q, Deng FY, Zhang LS, Hu HG, Deng HW. Network based subcellular proteomics in monocyte membrane revealed novel candidate genes involved in osteoporosis. Osteoporos Int 2017; 28:3033-3042. [PMID: 28741036 PMCID: PMC5812280 DOI: 10.1007/s00198-017-4146-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Accepted: 07/04/2017] [Indexed: 01/18/2023]
Abstract
UNLABELLED In this study, label-free-based quantitative subcellular proteomics integrated with network analysis highlighted several candidate genes including P4HB, ITGB1, CD36, and ACTN1 that may be involved in osteoporosis. All of them are predicted as significant membrane proteins with high confidence and enriched in bone-related biological process. The results were further verified in transcriptomic and genomic levels. INTRODUCTION Osteoporosis is a metabolic bone disease mainly characterized by low bone mineral density (BMD). As the precursors of osteoclasts, peripheral blood monocytes (PBMs) are supported to be important candidates for identifying genes related to osteoporosis. We performed subcellular proteomics study to identify significant membrane proteins that involved in osteoporosis. METHODS To investigate the association between monocytes, membrane proteins, and osteoporosis, we performed label-free quantitative subcellular proteomics in 59 male subjects with discordant BMD levels, with 30 high vs. 29 low BMD subjects. Subsequently, we performed integrated gene enrichment analysis, functional annotation, and pathway and network analysis based on multiple bioinformatics tools. RESULTS A total of 1070 membrane proteins were identified and quantified. By comparing the proteins' expression level, we found 36 proteins that were differentially expressed between high and low BMD groups. Protein localization prediction supported the notion that the differentially expressed proteins, P4HB (p = 0.0021), CD36 (p = 0.0104), ACTN1 (p = 0.0381), and ITGB1 (p = 0.0385), are significant membrane proteins. Functional annotation and pathway and network analysis highlighted that P4HB, ITGB1, CD36, and ACTN1 are enriched in osteoporosis-related pathways and terms including "ECM-receptor interaction," "calcium ion binding," "leukocyte transendothelial migration," and "reduction of cytosolic calcium levels." Results from transcriptomic and genomic levels provided additional supporting evidences. CONCLUSION Our study strongly supports the significance of the genes P4HB, ITGB1, CD36, and ACTN1 to the etiology of osteoporosis risk.
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Affiliation(s)
- Y Zeng
- College of Life Sciences and Bioengineering, Beijing Jiaotong University, Beijing, 100044, China
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
| | - L Zhang
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
| | - W Zhu
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
- College of Life Sciences, Hunan Normal University, Changsha, Hunan, 410081, China
| | - H He
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
| | - H Sheng
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
| | - Q Tian
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
| | - F-Y Deng
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA
- Laboratory of Proteins and Proteomics, Department of Epidemiology, Soochow University School of Public Health, Suzhou, Jiangsu, 205123, China
| | - L-S Zhang
- College of Life Sciences and Bioengineering, Beijing Jiaotong University, Beijing, 100044, China
| | - H-G Hu
- College of Life Sciences and Bioengineering, Beijing Jiaotong University, Beijing, 100044, China
| | - H-W Deng
- College of Life Sciences and Bioengineering, Beijing Jiaotong University, Beijing, 100044, China.
- Center of Bioinformatics and Genomics, Tulane University School of Public Health and Tropical Medicine, New Orleans, LA, 70112, USA.
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Zhu CG, Zhang LS. [Effect of platycodin D on radiosensitivity of human hepatoma cell line and related mechanisms of action]. Zhonghua Gan Zang Bing Za Zhi 2017; 25:458-462. [PMID: 28763865 DOI: 10.3760/cma.j.issn.1007-3418.2017.06.013] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [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 of platycodin D on the radiosensitivity of human hepatoma cell lines HepG2 and SMMC-7721 and related mechanisms of action. Methods: MTT assay was used to analyze the effect of different concentrations of platycodin D with different treatment times on cell viability. The cells were pretreated with 5 μg/ml platycodin D for 24 hours followed by X-ray irradiation at different radiation doses. Colony-forming assay was used to measure the radiosensitizing effect of platycodin D on cells. The quasi-threshold dose (Dq), mean lethal dose (Do), extrapolation number (N), sensitizer enhancement ratio (SER), and survival fraction (SF) at different radiation doses were calculated, and the multi-target single-hit model was used to fit the cell survival curve according to the formula SF = l-(l-e(-D/D0))N. Flow cytometry was used to investigate the distribution of cell cycle, and Western blotting was used to measure the changes in the protein expression of phosphorylated phosphatidylinositol 3'-kinase (pPI3K), phosphorylated protein kinase (pAkt), nuclear factor-κB (NF-κB), and phosphorylated nuclear factor inhibiting protein (pIκBα). A one-way analysis of variance, the t-test, or the least significant difference test was used for statistical analysis based on the type of data. Results: Platycodin D reduced the viability of HepG2 and SMMC-7721 cells in a dose-dependent manner; the IC50 value for HepG2 cells was 24.2 ± 0.61 μg/ml at 24 hours and 7.68 ± 0.46 μg/ml at 48 hours, and that for SMMC-7721 cells was 23.8 ± 0.57 μg/ml at 24 hours and 8.63 ± 0.86 μg/mL at 48 hours. After the combined treatment with platycodin D and irradiation, there were significant reductions in Dq (P = 0.002), Do (P = 0.002), and N value (P = 0.003), the survival curve markedly shifted to the left, and SER was 1.347 ± 0.04 in HepG2 cells and 1.418 ± 0.05 in SMMC-7721 cells. In addition, platycodin D significantly inhibited the increase in the proportion of cells in G2/M phase, the increases in the protein expression of pPI3k (P = 0.002), pAkt (P = 0.003), and NF-κB (P = 0.002), and the reduction in the protein expression of pIκBα (P = 0.003). Conclusion: Platycodin D can increase the radiosensitivity of HepG2 or SMMC-7721 cells, possibly by enhancing the growth inhibition effect of irradiation and inhibiting the activation of the PI3k/Akt and NF-κB pathways.
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Affiliation(s)
- C G Zhu
- Department of Hematology and Oncology, Shimen County People's Hospital, Shimen Hunan 415300, China
| | - L S Zhang
- Department of Clinical Pharmacy, Shimen County People's Hospital, Shimen Hunan 415300, China
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Wu WQ, Zhang LS, Liao SP, Lin XL, Zeng J, Du D. Association between XRCC1 polymorphisms and laryngeal cancer susceptibility in a Chinese sample population. Genet Mol Res 2016; 15:gmr8525. [PMID: 27808358 DOI: 10.4238/gmr.15048525] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [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
Laryngeal cancer is the major malignant tumor affecting the upper respiratory tract. Previous studies have reported on the association between XRCC1 genetic polymorphisms and risk of laryngeal cancer, but with conflicting results. In this study, we attempted to assess the association between XRCC1 Arg194Trp, Arg280His and Arg399Gln polymorphisms and risk of laryngeal cancer in a Chinese population. A total of 126 laryngeal cancer patients and 254 control subjects were recruited to this study from the Second Medical College of Jinan University between December 2013 and May 2015. The XRCC1 Arg194Trp, Arg280His, and Arg399Gln polymorphic sites were genotyped by polymerase chain reaction-restriction fragment length polymorphism. Our results revealed a significant association between the AA genotype of XRCC1 Arg280His [odds ratio (OR) = 2.51, 95% confidence interval (CI) = 1.29-4.87, P = 0.01] and an increased risk of laryngeal cancer susceptibility compared to the GG genotype. Moreover, the A allele showed a higher risk of laryngeal cancer susceptibility compared to the G allele (OR = 1.63, 95%CI = 1.19-2.50, P = 0.002). In conclusion, the results of our study suggest that the AA genotype and A allele of the XRCC1 Arg280His polymorphism are associated with an increased laryngeal cancer risk in a Chinese population.
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Affiliation(s)
- W Q Wu
- Department of Health management, The Second Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, China
| | - L S Zhang
- Otolaryngological Department, Zhumadian Central Hospital of Henan Province, Zhumadian, China
| | - S P Liao
- Department of Health management, The Second Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, China
| | - X L Lin
- Department of Health management, The Second Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, China
| | - J Zeng
- Central Laboratory, Shenzhen People's Hospital, Shenzhen, China
| | - D Du
- Department of Health management, The Second Medical College of Jinan University, Shenzhen People's Hospital, Shenzhen, China
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Ren XY, Zhang LS, Han YH, An T, Liu Y, Li YY, Chen HY. Proteomic research on diapause-related proteins in the female ladybird, Coccinella septempunctata L. Bull Entomol Res 2016; 106:168-174. [PMID: 26603522 DOI: 10.1017/s0007485315000954] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
In the experiments reported here, we used the female ladybird Coccinella septempunctata L. as a model to identify diapause-associated proteins using proteomics technology. Our results indicated that protein expression patterns of diapausing and nondiapausing individuals were highly differentiated. A total of 58 spots showed significant differences in abundance (Ratio > 2 and P < 0.05) according to two-dimensional electrophoresis and GE Image Scanner III analysis. Sixteen protein spots were further investigated using mass spectrometry. Eight proteins were characterized, including chaperones and proteins involved in glucose metabolism, lipid metabolism, and the tricarboxylic acid cycle. Among these proteins, five proteins were upregulated in diapausing female adults, including a chaperone (Symbionin symL), malate dehydrogenase (putative), two proteins linked to lipid metabolism (unknown and conserved hypothetical protein) and phosphoglyceromutase (partial). By contrast, isocitrate dehydrogenase (RH49423p), fumarylacetoacetate hydrolase (AGAP001942-PA), and a putative medium chain acyl-CoA dehydrogenase were downregulated. These results contribute to the understanding of diapause mechanisms of the ladybird C. septempunctata and may suggest methods for improving the application of this natural enemy insect.
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Affiliation(s)
- X Y Ren
- State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences;Sino-American Biological Control Laboratory,USDA-ARS,Beijing 100081,P.R. China
| | - L S Zhang
- State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences;Sino-American Biological Control Laboratory,USDA-ARS,Beijing 100081,P.R. China
| | - Y H Han
- State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences;Sino-American Biological Control Laboratory,USDA-ARS,Beijing 100081,P.R. China
| | - T An
- State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences;Sino-American Biological Control Laboratory,USDA-ARS,Beijing 100081,P.R. China
| | - Y Liu
- State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences;Sino-American Biological Control Laboratory,USDA-ARS,Beijing 100081,P.R. China
| | - Y Y Li
- State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences;Sino-American Biological Control Laboratory,USDA-ARS,Beijing 100081,P.R. China
| | - H Y Chen
- State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences;Sino-American Biological Control Laboratory,USDA-ARS,Beijing 100081,P.R. China
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Xia MF, Ling Y, Bian H, Lin HD, Yan HM, Chang XX, Li XM, Ma H, Wang D, Zhang LS, Wang SS, Wu BJ, He WY, Zhao NQ, Gao X. I148M variant of PNPLA3 increases the susceptibility to non-alcoholic fatty liver disease caused by obesity and metabolic disorders. Aliment Pharmacol Ther 2016; 43:631-42. [PMID: 26765961 DOI: 10.1111/apt.13521] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2015] [Revised: 09/23/2015] [Accepted: 12/16/2015] [Indexed: 12/28/2022]
Abstract
BACKGROUND The patatin-like phospholipase 3 (PNPLA3) rs738409 gene polymorphism is an important genetic determinant of non-alcoholic fatty liver disease (NAFLD). However, the associations between liver fat and metabolic traits in rs738409 G allele carriers and the allelic influence on this association have not been fully studied. AIM To investigate the influence of the PNPLA3 gene polymorphism on the association of liver fat with serum metabolic factors and carotid atherosclerosis. METHODS Liver fat was measured by quantitative ultrasound in 4300 subjects in the Shanghai Changfeng community and analysed for its association with obesity and metabolic factors in individuals with the PNPLA3 CC, CG and GG genotypes. RESULTS Non-alcoholic fatty liver disease occurred in 37.9% and 28.8% of the subjects with the GG and CC genotypes respectively (P < 0.001). Liver fat was significantly associated with body mass index, waist circumference, serum triglycerides, high-density lipoprotein cholesterol, fasting blood glucose and insulin in the PNPLA3 rs738409 G allele carriers (P < 0.001). Compared with the CC homozygotes, the GG homozygotes presented higher liver fat and liver fibrosis scores despite their better metabolic status (comparison of regression line slopes, P < 0.05). An increase in liver fat was accompanied by a significant increase in the average and maximum carotid intima-media thickness in subjects with the PNPLA3 CC genotype but not in those with the GG genotype. CONCLUSIONS PNPLA3 rs738409 G allele carriers were found to be more susceptible to the metabolic-related hepatic steatosis, and developed NAFLD and liver fibrosis despite presenting relatively better metabolic statuses and lower risks for carotid atherosclerosis.
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Affiliation(s)
- M-F Xia
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.,Institute of Chronic Metabolic Diseases, Fudan University, Shanghai, China
| | - Y Ling
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.,Institute of Chronic Metabolic Diseases, Fudan University, Shanghai, China
| | - H Bian
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.,Institute of Chronic Metabolic Diseases, Fudan University, Shanghai, China
| | - H-D Lin
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.,Institute of Chronic Metabolic Diseases, Fudan University, Shanghai, China
| | - H-M Yan
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.,Institute of Chronic Metabolic Diseases, Fudan University, Shanghai, China
| | - X-X Chang
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.,Institute of Chronic Metabolic Diseases, Fudan University, Shanghai, China
| | - X-M Li
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China
| | - H Ma
- Department of Geriatrics, Zhongshan Hospital, Fudan University, Shanghai, China
| | - D Wang
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China
| | - L-S Zhang
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.,Institute of Chronic Metabolic Diseases, Fudan University, Shanghai, China
| | - S-S Wang
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China
| | - B-J Wu
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China
| | - W-Y He
- Department of Ultrasonography, Zhongshan Hospital, Fudan University, Shanghai, China
| | - N-Q Zhao
- Department of Health Statistics and Social Medicine, School of Public Health, Fudan University, Shanghai, China
| | - X Gao
- Department of Endocrinology and Metabolism, Zhongshan Hospital, Fudan University, Shanghai, China.,Institute of Chronic Metabolic Diseases, Fudan University, Shanghai, China
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Liu Y, Yuan JM, Zhang LS, Zhang YR, Cai SM, Yu JH, Xia ZF. Effects of tryptophan supplementation on growth performance, antioxidative activity, and meat quality of ducks under high stocking density. Poult Sci 2015; 94:1894-901. [PMID: 26089478 DOI: 10.3382/ps/pev155] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2015] [Indexed: 11/20/2022] Open
Abstract
High stocking density (STD) could affect duck welfare and production. The objective of our study was to investigate whether dietary tryptophan (TRP) supplementation could alleviate the detrimental effects of high STD on ducks. White Pekin ducks at 4 to 6 wk of age were raised at 11 birds/m(2) and fed diets containing 0.18, 0.48, 0.78, or 1.08% TRP for 21 d. Growth performance, concentrations of TRP and metabolites in the blood and hypothalamus, antioxidative activities in serum and tissue, meat quality, serum uric acid, and urea nitrogen were measured. Weight gain and feed efficiency were significantly improved by TRP supplementation at ≥ 0.48 and ≥ 0.78% (P < 0.05 and P < 0.001, respectively). Serum TRP, hypothalamic TRP, 5-hydroxytryptamine (5-HT), 5-hydroxyindoleacitic acid (5-HIAA), and 5-HIAA/5-HT were also increased significantly (P < 0.01). These increases plateaued at 0.48% TRP, and no further improvement was obtained by adding more TRP to the diet. Dietary TRP supplementation significantly increased levels of total antioxidant capacity, glutathione peroxidase (GSH-Px), and catalase (CAT) in serum; GSH-Px in liver; and GSH-Px and CAT in breast muscle (P < 0.05). Malondialdehyde levels in breast muscle decreased (P < 0.001). Drip loss of breast muscle and pH decline at 45 min postmortem were reduced by TRP supplementation (P < 0.01 and P < 0.05, respectively). Meat color was similar among different treatments (P > 0.05). Breast muscle shear force was increased significantly when dietary TRP level increased to 1.08% (P < 0.01). For ducks raised at 11 birds/m², dietary TRP supplementation could alleviate stress and improve growth performance, antioxidative activity, and meat quality.
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Affiliation(s)
- Y Liu
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - J M Yuan
- College of Animal Science and Technology, China Agricultural University, Beijing 100193, China
| | - L S Zhang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - Y R Zhang
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - S M Cai
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
| | - J H Yu
- Animal Department, Beijing Aquarium, Beijing 100044, China
| | - Z F Xia
- College of Veterinary Medicine, China Agricultural University, Beijing 100193, China
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Zou DY, Coudron TA, Wu HH, Gu XS, Xu WH, Zhang LS, Chen HY. Performance and Cost Comparisons for Continuous Rearing of Arma chinensis (Hemiptera: Pentatomidae: Asopinae) on a Zoophytogenous Artificial Diet and a Secondary Prey. J Econ Entomol 2015; 108:454-461. [PMID: 26470156 DOI: 10.1093/jee/tov024] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/03/2014] [Accepted: 01/11/2015] [Indexed: 06/05/2023]
Abstract
The impact of a zoophytogenous, insect-free artificial diet and a secondary prey, pupae of Chinese oak silk moth Antheraea pernyi (Guérin-Méneville) (Lepidoptera: Saturniidae), on the developmental rate, life history parameters, and fertility was examined for F6, F9, and F12 consecutive generations for domesticated Arma chinensis (Fallou) (Heteroptera: Pentatomidae). This study showed that when fed an insect-free artificial diet during both the nymphal and adult stages, developmental times were prolonged, and fecundity, egg viability, net reproductive rates (R0), and intrinsic rates of increase (rm) declined. As a result, the cost to rear A. chinensis on the artificial diet approached 1.7 times the cost of rearing A. chinensis on pupae of A. pernyi. Future diet improvements should attempt to reduce developmental time, increase fecundity, and egg viability and use less costly nutrient sources.
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Affiliation(s)
- D Y Zou
- Insect Pest Control Laboratory, Tianjin Institute of Plant Protection, Tianjin 300381, China. Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100081, China. Sino-American Biological Control Laboratory, USDA-Agricultural Research Service, Beijing 100081, China.
| | - T A Coudron
- Biological Control of Insects Research Laboratory, USDA-Agricultural Research Service, Columbia, MO 65203
| | - H H Wu
- Agricultural Analysis and Test Center, Tianjin Agricultural University, Tianjin 300384, China
| | - X S Gu
- Insect Pest Control Laboratory, Tianjin Institute of Plant Protection, Tianjin 300381, China
| | - W H Xu
- Insect Pest Control Laboratory, Tianjin Institute of Plant Protection, Tianjin 300381, China
| | - L S Zhang
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100081, China. Sino-American Biological Control Laboratory, USDA-Agricultural Research Service, Beijing 100081, China
| | - H Y Chen
- Key Laboratory of Integrated Pest Management in Crops, Ministry of Agriculture, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100081, China. Sino-American Biological Control Laboratory, USDA-Agricultural Research Service, Beijing 100081, China
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Zhang LS, Hu HG, Liu YJ, Li J, Yu P, Zhang F, Yang TL, Tian Q, Zheng YP, Guo Y, Deng HW. A follow-up association study of two genetic variants for bone mineral density variation in Caucasians. Osteoporos Int 2012; 23:1867-75. [PMID: 22159821 PMCID: PMC3682467 DOI: 10.1007/s00198-011-1863-z] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2011] [Accepted: 09/12/2011] [Indexed: 10/14/2022]
Abstract
SUMMARY We tested whether two genetic variants were associated with BMD at multiple clinically relevant skeletal sites in Caucasians. We found that variant rs7776725 is consistently associated with hip, spine, wrist and whole-body BMD, which highlights the potential importance of this variant or linked variants for osteoporosis. INTRODUCTION A recent genome-wide association study identified two single nucleotide polymorphisms (SNPs), rs7776725 and rs1721400, that were associated with bone mineral density (BMD) variation at the radius, tibia and calcaneus in a Korean population. In this study, we aimed to test whether the association of these two genetic variants can be replicated in Caucasians and whether their association with BMD can be extended to other clinically relevant skeletal sites. METHODS We performed this study in two large cohorts of unrelated US Caucasians. Area BMD at the hip, spine, wrist (ultra-distal radius) and whole body were measured with Hologic dual-energy X-ray absorptiometer. SNPs were genotyped with Affymetrix human genome-wide genotyping arrays. Association analyses were performed using PLINK. RESULTS We detected highly significant association (combined p = 1.42 × 10(-16)) of rs7776725 with wrist BMD but only borderline association signal (combined p = 0.017) for rs1721400 with wrist BMD. In addition, we found that rs7776725 was associated with BMD at the hip, spine and whole body. At the FAM3C gene locus where rs7776725 was located, we identified several other SNPs (rs4727922, rs1803389, rs718766 and rs7793554) that were also associated with BMD. CONCLUSIONS This is the first follow-up association study of rs7776725 and rs1721400 with BMD. The rs7776725 showed consistent association with BMD at multiple clinically important skeletal sites, which highlighted the potential importance of rs7776725 or linked SNPs for risk of osteoporosis. Further in-depth re-sequencing studies and functional assays are necessary to elucidate the underlying mechanisms.
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Affiliation(s)
- L-S Zhang
- College of Life Sciences and Bioengineering, School of Science, Beijing Jiaotong University, Beijing, 100044, People's Republic of China
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Zhu CH, Cui LL, Zhang LS. Comparison of a Commercial ELISA with the Modified Agglutination Test for Detection of Toxoplasma gondii Antibodies in Sera of Naturally Infected Dogs and Cats. Iran J Parasitol 2012; 7:89-95. [PMID: 23109967 PMCID: PMC3469177] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2011] [Accepted: 07/11/2012] [Indexed: 11/15/2022]
Abstract
BACKGROUND Toxoplasma gondii can infect all warm-blooded animals. Modified agglutination test (MAT) and ELISA are widely used for the detection of T. gondii antibodies. However, there is little information on their acceptability for detecting antibodies in companion animals. METHODS This study compared ELISA and MAT for their ability to detect T. gondii infection in naturally infected dogs and cats. Blood samples were collected from dogs and cats in different areas of Beijing, China and analyzed by ELISA and MAT. The χ(2) test and κ analysis were used to evaluate their efficiency and agreement. RESULTS For dogs, the seroprevalence of T. gondii antibodies detected by ELISA was 34.7%, which was significantly higher than that detected by MAT (P<0.05). There was no significant difference between ELISA and MAT for detecting T. gondii antibodies in cats. Good agreements between MAT and ELISA were seen in both dogs and cats; however, inconsistent results were demonstrated by κ analysis and in MAT titer assay. CONCLUSION Serum-based ELISA may be more satisfactory for screening test of T. gondii infection in dogs, whereas both methods could be acceptable in cats.
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Affiliation(s)
- CH Zhu
- School of public health, Sichuan University, Chengdu, 610041, China,College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China
| | - LL Cui
- College of Veterinary Medicine, China Agricultural University, Beijing, 100193, China,Corresponding author:Tel.: +98 261 457 0038 (2098),
| | - LS Zhang
- School of public health, Sichuan University, Chengdu, 610041, China
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28
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Song Y, Zhang LS, Wang H, Jin H, Li C, Jin N. Immune responses of mice to prime-boost vaccination with the recombinant DNA and Fowlpox virus both expressing HIV-2 Gag-gp105. Acta Virol 2010; 54:293-6. [PMID: 21175253 DOI: 10.4149/av_2010_04_293] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Human immunodeficiency viruses 1 and 2 (HIV-1, 2) present a public health problem for which there is neither an effective antiviral therapy nor a preventive vaccine. In this study, the immune responses of mice to prime-boost vaccination with the recombinant DNA (rDNA) and recombinant Fowlpox virus (rFPV) both expressing HIV-2 Gag-gp105 chimeric protein, were compared to those elicited by each vector alone. Mice primed with the rDNA and boosted with the rFPV showed HIV-2-specific antibody levels, splenic CD4+ and CD8+ T-lymphocyte numbers, and Gag-gp105-specific cytotoxic T-lymphocytes (CTL) activity increased by 20-30% as compared with those elicited by these vaccines alone. These findings suggested that the prime-boost strategy combining rDNA and rFPV elicited significant Gag-gp105 - specific cellular and humoral immune responses, thus supporting this novel approach to the immunization against HIV infections.
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MESH Headings
- AIDS Vaccines/administration & dosage
- AIDS Vaccines/genetics
- AIDS Vaccines/immunology
- Animals
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/virology
- Chick Embryo
- Disease Models, Animal
- Female
- Fowlpox virus/genetics
- Fowlpox virus/immunology
- HIV Infections/drug therapy
- HIV Infections/immunology
- HIV Infections/prevention & control
- HIV Infections/virology
- HIV-2/genetics
- HIV-2/immunology
- Humans
- Immunization, Secondary
- Mice
- Mice, Inbred BALB C
- T-Lymphocytes, Cytotoxic/immunology
- T-Lymphocytes, Cytotoxic/virology
- Vaccination
- Vaccines, DNA/administration & dosage
- Vaccines, DNA/genetics
- Vaccines, DNA/immunology
- env Gene Products, Human Immunodeficiency Virus/administration & dosage
- env Gene Products, Human Immunodeficiency Virus/genetics
- env Gene Products, Human Immunodeficiency Virus/immunology
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Affiliation(s)
- Y Song
- Tianjin University, Tianjin, People's Republic of China
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Gao CS, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HB, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu ZA, Liu ZX, Lu F, Lu GR, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma QM, Ma XY, Mao ZP, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JX, Wang JZ, Wang K, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wei DH, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Ye M, Ye MH, Ye YX, Yi LH, Yi ZY, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang YJ, Zhang YY, Zhang Y, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zou BS. Observation of two new N* peaks in J/psi-->ppi-n and ppi+n decays. Phys Rev Lett 2006; 97:062001. [PMID: 17026161 DOI: 10.1103/physrevlett.97.062001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2004] [Indexed: 05/12/2023]
Abstract
The decay J/psi-->NNpi provides an effective isospin 1/2 filter for the piN system due to isospin conservation. Using 58x10(6) J/psi decays collected with the Beijing Electromagnetic Spectrometer at the Beijing Electron Positron Collider, more than 100 thousand J/psi-->ppi-n+c.c. events are obtained. Besides the two well-known N* peaks at around 1500 MeV/c2 and 1670 MeV/c2, there are two new, clear N* peaks in the ppi invariant mass spectrum around 1360 MeV/c2 and 2030 MeV/c2 with statistical significance of 11sigma and 13sigma, respectively. We identify these as the first direct observation of the N*(1440) peak and a long-sought missing N* peak above 2 GeV/c2 in the piN invariant mass spectrum.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Ahluwalia BPS, Cheong WC, Yuan XC, Zhang LS, Tao SH, Bu J, Wang H. Design and fabrication of a double-axicon for generation of tailorable self-imaged three-dimensional intensity voids. Opt Lett 2006; 31:987-9. [PMID: 16599233 DOI: 10.1364/ol.31.000987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/08/2023]
Abstract
We propose a new design for fabrication of a highly power-efficient double axicon to generate self-imaged three-dimensional intensity voids along the propagation of a beam. The conventional conical structure of an axicon is modified and shaped like an axiconlike structure with a double-gradient surface profile. The gradient conical surfaces generate Bessel beams with varying radial wave vectors that are superimposed and interfere to generate a sequence of three-dimensional intensity voids. The proposed element was fabricated using electron-beam lithography, and experimental verification of the design is reported.
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Affiliation(s)
- B P S Ahluwalia
- School of Electrical & Electronic Engineering, Nanyang-Technological University, Nanyang Avenue, Singapore 639798, Singapore
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Moh KJ, Yuan XC, Cheong WC, Zhang LS, Lin J, Ahluwalia BPS, Wang H. High-power efficient multiple optical vortices in a single beam generated by a kinoform-type spiral phase plate. Appl Opt 2006; 45:1153-61. [PMID: 16523777 DOI: 10.1364/ao.45.001153] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/07/2023]
Abstract
We propose using a solitary kinoform-type spiral phase plate structure to generate an array of vortices located in a single beam. Kinoform-type spiral surfaces allow each wavelength component of the phase modulation value to be wrapped back to its 2 pi equivalent for optical vortices of high charge. This allows the surface-relief profiles of high-charge vortices to be microfabricated with the same physical height as spiral phase plates of unity-charged optical vortices. The m-charged optical vortex obtained interacts with the inherent coherent background, which changes the propagation dynamics of the optical vortex and splits the initial m charge into /m/ unity-charged optical vortices within the same beam. Compared to a hologram, a multistart spiral phase plate is more efficient in the use of available spatial frequencies and beam energy and also is computationally less demanding. Furthermore, using microfabrication techniques will allow for greater achievable tolerances in terms of smaller feature sizes.
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Affiliation(s)
- K J Moh
- Photonics Research Centre, School of Electrical & Electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore 639798
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Ablikim M, Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen JC, Chen J, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Gao CS, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Harris FA, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu ZA, Liu ZX, Lu F, Lu GR, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma QM, Ma XY, Mao ZP, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JX, Wang JZ, Wang K, Wang L, Wang LS, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wei DH, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Ye M, Ye MH, Ye YX, Yi LH, Yi ZY, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang YJ, Zhang YY, Zhang Y, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao MG, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu Y, Zhu ZA, Zhuang BA, Zou BS. Observation of a threshold enhancement in the plambda invariant-mass spectrum. Phys Rev Lett 2004; 93:112002. [PMID: 15447331 DOI: 10.1103/physrevlett.93.112002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2004] [Indexed: 05/24/2023]
Abstract
An enhancement near the m(p)+M(Lambda) mass threshold is observed in the combined pLambda and pLambda invariant-mass spectrum from J/psi-->pK(-)Lambda;+c.c. decays. It can be fit with an S-wave Breit-Wigner resonance with a mass m=2075+/-12(stat)+/-5(syst) MeV and a width of Gamma=90+/-35(stat)+/-9(syst) MeV; it can also be fit with a P-wave Breit-Wigner resonance. Evidence for a similar enhancement is also observed in psi(')-->pK(-)Lambda;+c.c. decays. The analysis is based on samples of 5.8x10(7)J/psi and 1.4x10(7)psi(') decays accumulated in the BES II detector at the Beijing Electron-Positron Collider.
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Affiliation(s)
- M Ablikim
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen HX, Chen J, Chen JC, Chen J, Chen ML, Chen YB, Chi SP, Chu YP, Cui XZ, Dai HL, Dai YS, Deng ZY, Dong LY, Du SX, Du ZZ, Fang J, Fang SS, Fu CD, Fu HY, Fu LP, Gao CS, Gao ML, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Han SW, Harris FA, He J, He KL, He M, He X, Heng YK, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Ji XB, Jia QY, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Lai YF, Li F, Li G, Li HH, Li J, Li JC, Li QJ, Li RB, Li RY, Li SM, Li W, Li WG, Li XL, Li XQ, Li XS, Liang YF, Liao HB, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu Y, Liu ZA, Liu ZX, Lu GR, Lu F, Lu JG, Luo CL, Luo XL, Ma FC, Ma JM, Ma LL, Ma XY, Mao ZP, Meng XC, Mo XH, Nie J, Nie ZD, Olsen SL, Peng HP, Qi ND, Qian CD, Qin H, Qiu JF, Ren ZY, Rong G, Shan LY, Shang L, Shen DL, Shen XY, Sheng HY, Shi F, Shi X, Song LW, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang X, Tao N, Tian YR, Tong GL, Varner GS, Wang DY, Wang JZ, Wang L, Wang LS, Wang M, Wang M, Wang P, Wang PL, Wang SZ, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wu N, Wu YM, Xia XM, Xie XX, Xin B, Xu GF, Xu H, Xu Y, Xue ST, Yan ML, Yan WB, Yang F, Yang HX, Yang J, Yang SD, Yang YX, Yi LH, Yi ZY, Ye M, Ye MH, Ye YX, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JM, Zhang JY, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XM, Zhang XY, Zhang Y, Zhang YJ, Zhang YY, Zhang ZP, Zhang ZQ, Zhao DX, Zhao JB, Zhao JW, Zhao PP, Zhao WR, Zhao XJ, Zhao YB, Zhao ZG, Zheng HQ, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu Y, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zou BS. Observation of the decay psi(2S)-->K0SK0L. Phys Rev Lett 2004; 92:052001. [PMID: 14995298 DOI: 10.1103/physrevlett.92.052001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2003] [Indexed: 05/24/2023]
Abstract
The decay psi(2S)-->K(0)(S)K(0)(L) is observed using psi(2S) data collected with the Beijing Spectrometer at the Beijing Electron-Positron Collider; the branching fraction is determined to be B(psi(2S)-->K(0)(S)K(0)(L))=(5.24+/-0.47+/-0.48)x10(-5). Compared with J/psi-->K(0)(S)K(0)(L), the psi(2S) branching fraction is enhanced relative to the prediction of the perturbative QCD "12%" rule. The result, together with the branching fractions of psi(2S) decays to other pseudoscalar meson pairs (pi(+)pi(-) and K+K-), is used to investigate the relative phase between the three-gluon and the one-photon annihilation amplitudes of psi(2S) decays.
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Affiliation(s)
- J Z Bai
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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Bai JZ, Ban Y, Bian JG, Cai X, Chang JF, Chen HF, Chen HS, Chen J, Chen J, Chen JC, Chen YB, Chi SP, Chu YP, Cui XZ, Dai YM, Dai YS, Dong LY, Du SX, Du ZZ, Dunwoodie W, Fang J, Fang SS, Fu CD, Fu HY, Fu LP, Gao CS, Gao ML, Gao YN, Gong MY, Gong WX, Gu SD, Guo YN, Guo YQ, Guo ZJ, Han SW, Harris FA, He J, He KL, He M, He X, Heng YK, Hong T, Hu HM, Hu T, Huang GS, Huang L, Huang XP, Izen JM, Ji XB, Jiang CH, Jiang XS, Jin DP, Jin S, Jin Y, Jones BD, Ke ZJ, Kong D, Lai YF, Li F, Li G, Li HH, Li J, Li JC, Li K, Li QJ, Li RB, Li RY, Li W, Li WG, Li XQ, Li XS, Liu CF, Liu CX, Liu F, Liu F, Liu HM, Liu JB, Liu JP, Liu RG, Liu Y, Liu ZA, Liu ZX, Lou XC, Lu GR, Lu F, Lu HJ, Lu JG, Lu ZJ, Luo XL, Ma EC, Ma FC, Ma JM, Malchow R, Mao ZP, Meng XC, Mo XH, Nie J, Nie ZD, Olsen SL, Paluselli D, Peng HP, Qi ND, Qian CD, Qiu JF, Rong G, Shen DL, Shen H, Shen XY, Sheng HY, Shi F, Song LW, Sun HS, Sun SS, Sun YZ, Sun ZJ, Tang SQ, Tang X, Tian D, Tian YR, Toki W, Tong GL, Varner GS, Wang J, Wang JZ, Wang L, Wang LS, Wang M, Wang M, Wang P, Wang PL, Wang WF, Wang YF, Wang Z, Wang Z, Wang Z, Wang ZY, Wei CL, Wu N, Xia XM, Xie XX, Xu GF, Xu Y, Xue ST, Yan ML, Yan WB, Yang GA, Yang HX, Yang J, Yang SD, Ye MH, Ye YX, Ying J, Yu CS, Yu GW, Yuan CZ, Yuan JM, Yuan Y, Yue Q, Zang SL, Zeng Y, Zhang BX, Zhang BY, Zhang CC, Zhang DH, Zhang HY, Zhang J, Zhang JM, Zhang JW, Zhang LS, Zhang QJ, Zhang SQ, Zhang XY, Zhang YJ, Zhang Y, Zhang YY, Zhang ZP, Zhao DX, Zhao J, Zhao JW, Zhao PP, Zhao WR, Zhao YB, Zhao ZG, Zheng JP, Zheng LS, Zheng ZP, Zhong XC, Zhou BQ, Zhou GM, Zhou L, Zhou NF, Zhu KJ, Zhu QM, Zhu Y, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zou BS. Observation of a near-threshold enhancement in the pp mass spectrum from radiative J/psi-->gammapp decays. Phys Rev Lett 2003; 91:022001. [PMID: 12906471 DOI: 10.1103/physrevlett.91.022001] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2003] [Indexed: 05/24/2023]
Abstract
We observe a narrow enhancement near 2m(p) in the invariant mass spectrum of pp pairs from radiative J/psi-->gammapp decays. No similar structure is seen in J/psi-->pi(0)pp decays. The results are based on an analysis of a 58 x 10(6) event sample of J/psi decays accumulated with the BESII detector at the Beijing electron-positron collider. The enhancement can be fit with either an S- or P-wave Breit-Wigner resonance function. In the case of the S-wave fit, the peak mass is below 2m(p) at M=1859(+3)(-10) (stat)+5-25(syst) MeV/c(2) and the total width is Gamma<30 MeV/c(2) at the 90% confidence level. These mass and width values are not consistent with the properties of any known particle.
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Affiliation(s)
- J Z Bai
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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35
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Bai JZ, Ban Y, Bian JG, Chen AD, Chen HF, Chen HS, Chen JC, Chen XD, Chen YB, Cheng BS, Chi SP, Chu YP, Choi JB, Cui XZ, Dai YS, Dong LY, Du ZZ, Dunwoodie W, Fu HY, Fu LP, Gao CS, Gu SD, Guo YN, Guo ZJ, Han SW, Han Y, Harris FA, He J, He JT, He KL, He M, He X, Hong T, Heng YK, Hu GY, Hu HM, Hu QH, Hu T, Huang GS, Huang XP, Huang YZ, Izen JM, Ji XB, Jiang CH, Jin Y, Jones BD, Kang JS, Ke ZJ, Kim HJ, Kim SK, Kim TY, Kong D, Lai YF, Li D, Li HB, Li HH, Li J, Li JC, Li PQ, Li QJ, Li RY, Li W, Li WG, Li XN, Li XQ, Liu B, Liu F, Liu F, Liu HM, Liu J, Liu JP, Liu TR, Liu RG, Liu Y, Liu ZX, Lou XC, Lu GR, Lu F, Lu JG, Lu ZJ, Luo XL, Ma EC, Ma JM, Malchow R, Mao HS, Mao ZP, Meng XC, Mo XH, Nie J, Nie ZD, Olsen SL, Paluselli D, Park H, Qi ND, Qi XR, Qian CD, Qiu JF, Que YK, Rong G, Shao YY, Shen BW, Shen DL, Shen H, Shen XY, Sheng HY, Shi F, Shi HZ, Song XF, Suh JY, Sun HS, Sun LF, Sun YZ, Tang SQ, Toki W, Tong GL, Varner GS, Wang J, Wang JZ, Wang L, Wang LS, Wang P, Wang PL, Wang SM, Wang YY, Wang ZY, Wei CL, Wu N, Xi DM, Xia XM, Xie XX, Xu GF, Xu Y, Xue ST, Yan WB, Yan WG, Yang CM, Yang CY, Yang GA, Yang HX, Yang W, Yang XF, Ye MH, Ye SW, Ye YX, Yu CS, Yu CX, Yu GW, Yuan Y, Zhang BY, Zhang C, Zhang CC, Zhang DH, Zhang HL, Zhang HY, Zhang J, Zhang JW, Zhang L, Zhang LS, Zhang P, Zhang QJ, Zhang SQ, Zhang XY, Zhang YY, Zhang ZP, Zhao DX, Zhao HW, Zhao J, Zhao JW, Zhao M, Zhao PP, Zhao WR, Zhao YB, Zhao ZG, Zheng JP, Zheng LS, Zheng ZP, Zhou BQ, Zhou GM, Zhou L, Zhu KJ, Zhu QM, Zhu YC, Zhu YS, Zhu ZA, Zhuang BA, Zou BS. Measurements of the cross section for e(+)e(-) --> hadrons at center-of-mass energies from 2 to 5 GeV. Phys Rev Lett 2002; 88:101802. [PMID: 11909342 DOI: 10.1103/physrevlett.88.101802] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/03/2001] [Indexed: 05/23/2023]
Abstract
We report values of R = sigma(e(+)e(-)-->hadrons)/sigma(e(+)e(-)-->mu(+)mu(-)) for 85 center-of-mass energies between 2 and 5 GeV measured with the upgraded Beijing Spectrometer at the Beijing Electron-Positron Collider.
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Affiliation(s)
- J Z Bai
- Institute of High Energy Physics, Beijing 100039, People's Republic of China
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36
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Li FW, Zhang LS, Liu H, Cai YC, Pan JH, Jia XY, Ding JX. [Study of protective effect of leech, radix Salviae miltiorrhizae and its composite recipe on vascular endothelial cells in rats with blood stasis syndrome]. Zhongguo Zhong Yao Za Zhi 2001; 26:703-6. [PMID: 12776322] [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: 03/02/2023]
Abstract
OBJECTIVE To study the protective effect for Chinese medicine of promoting blood circulation and removing blood stasis (PBCRBS) on vascular endothelial cells (VEC) in rats, aiming at further research on the mechanism of blood stasis syndrome and PBCRBS. METHOD Establishing a model of blood stasis with endothelial damage by means of giving rats an injection of adrenalin and making it swim in ice-cold water, then measuring the number of circulating endothelial cells (CEC) in whole blood and rheology. Moreover observing the change of the above indexes after the rats have taken Leech, Radix salviae miltrorrhizae (RSM) and its composite recipe for 5 days or 10 days. RESULT It could increase the number of CEC accompanied by whole blood viscosity, fibrinogen and hematocrit in rats with blood stasis. But for groups taking Chinese medicine, the number of CEC was decreased distinctively and blood rheology was improved. CONCLUSION The rat with blood stasis syndrome suffered from obvious injury of VEC. The Leech, RSM and its composite recipe could protect VEC.
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Affiliation(s)
- F W Li
- Institute of Basic Theory, China Academy of Traditinal Chinese Medicine, Beijing 100700, China
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37
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Qin WX, Wan F, Sun FY, Zhang PP, Han LW, Huang Y, Jiang HQ, Zhao XT, He M, Ye Y, Cong WM, Wu MC, Zhang LS, Yang NW, Gu JR. Cloning and characterization of a novel gene (C17orf25) from the deletion region on chromosome 17p13.3 in hepatocelular carcinoma. Cell Res 2001; 11:209-16. [PMID: 11642406 DOI: 10.1038/sj.cr.7290088] [Citation(s) in RCA: 17] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Using a combination of hybridization of PAC to a cDNA library and RACE technique, we isolated a novel cDNA, designated as C17orf25 (Chromosome 17 open reading frame 25, previously named it HC71A), from the deletion region on chromosome 17p13.3. The cDNA encodes a protein of 313 amino acids with a calculated molecular mass of 34.8 kDa. C17orf25 is divided into 10 exons and 9 introns, spanning 23 kb of genomic DNA. Northern blot analysis showed that the mRNA expression of C17orf25 was decreased in hepatocellular carcinoma samples as compared to adjacent noncancerous liver tissues from the same patients. The transfection of C17orf25 into the hepatocellular carcinoma cell SMMC7721 and overexpression could inhibit the cell growth. The above results indicate that C17orf25 is a novel human gene, and the cloning and preliminary characterization of C17orf25 is a prerequisite for further functional analysis of this novel gene in human hepatocellular carcinoma.
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Affiliation(s)
- W X Qin
- National Laboratory for Oncogenes and Related Genes, Shanghai Cancer Institute, China
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38
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Li WY, Zhang LS, Ni DF, Zhang BQ. [Nasopharyngeal stenosis following uvulopalatopharyngoplasty]. Lin Chuang Er Bi Yan Hou Ke Za Zhi 2000; 14:53-4. [PMID: 12541472] [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: 02/28/2023]
Abstract
OBJECTIVE To report nasopharyngeal stenosis following UPPP and our treatment experience. METHOD Two clinical cases were analysised. RESULT In this paper, the complications were attributed to excessive excision palapharyngeal arches, which juried mucous membrane of nasopharyngeal inlet during the long management time as bleeding and the laser used. Surgical management was performed in two cases. One failed. One was treated successfully by rotation palato-pharyngeal flap and prolonged nasopharyngeal stent, Follow-up 20 months there was no recurrence of stenosis. CONCLUSION Surgical correction of nasopharyngeal stenosis following UPPP is challenging and the best treatment is prevention.
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Affiliation(s)
- W Y Li
- Department of Otolaryngology, Chinese Academy of Medical Sciences, Peking Union Medical College Hospital, Beijing 100730
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39
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Honma M, Zhang LS, Hayashi M, Takeshita K, Nakagawa Y, Tanaka N, Sofuni T. Illegitimate recombination leading to allelic loss and unbalanced translocation in p53-mutated human lymphoblastoid cells. Mol Cell Biol 1997; 17:4774-81. [PMID: 9234733 PMCID: PMC232329 DOI: 10.1128/mcb.17.8.4774] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
Abstract
Allelic loss and translocation are critical mutational events in human tumorigenesis. Allelic loss, which is usually identified as loss of heterozygosity (LOH), is frequently observed at tumor suppressor loci in various kinds of human tumors. It is generally thought to result from deletion or mitotic recombination between homologous chromosomes. In this report, we demonstrate that illegitimate (nonhomologous) recombination strongly contributes to the generation of allelic loss in p53-mutated cells. Spontaneous and X-ray-induced LOH mutations at the heterozygous thymidine kinase (tk) gene, which is located on the long arm of chromosome 17, from normal (TK6) and p53-mutated (WTK-1) human lymphoblastoid cells were cytogenetically analyzed by chromosome 17 painting. We observed unbalanced translocations in 53% of LOH mutants spontaneously arising from WTK-1 cells but none spontaneously arising from TK6 cells. We postulate that illegitimate recombination was occurring between nonhomologous chromosomes after DNA replication, leading to allelic loss and unbalanced translocations in p53-mutated WTK-1 cells. X-ray irradiation, which induces DNA double-strand breaks (DSBs), enhanced the generation of unbalanced translocation more efficiently in WTK-1 than in TK6 cells. This observation implicates the wild-type p53 protein in the regulation of homologous recombination and recombinational DNA repair of DSBs and suggests a possible mechanism by which loss of p53 function may cause genomic instability.
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Affiliation(s)
- M Honma
- Division of Genetics and Mutagenesis, National Institute of Health Sciences, Setagaya, Tokyo, Japan
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40
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Ma XY, Zhang LS, He RR. [Expression of c-fos in spinal cord, medulla oblongata and thalamus following epicardial application of adenosine]. Sheng Li Xue Bao 1997; 49:395-9. [PMID: 9812870] [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: 02/09/2023]
Abstract
Effects of epicardial application of adenosine on the expression of c-fos proto-oncogene in spinal cord, medulla oblongata and thalamus were examined in 12 sinoaortic denervated and vagotomized anesthetized rats. The results showed that following epicardial application of adenosine the Fos-like protein immunoreactive (FLI) neurons were remarkably increased in the dorsal horn of T3 spinal segment, nucleus paragigantocellularis lateralis (PGL) of medulla oblongata, ventral postero-lateral thalamic nucleus (VPL), posterior thalamic nucleus (Po), parafascicular thalamic nucleus (PF) and centrolateral thalamic nucleus (CL), while the blood pressure and heart rate were not affected. Only a few FLI neurons were found in the vehicle-control rats. The results indicate that epicardial application of adenosine may activate the pain-related neurons in spinal cord, medulla oblongata and thalamus.
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Affiliation(s)
- X Y Ma
- Department of Physiology, Institute of Basic Medicine, Hebei Medical University, Shijiazhuang
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Yüan SM, Zhang LS, Xu QZ, Guo JQ. Echocardiography of the right ventricle-to-pulmonary artery homograft conduit of patients with transposition of the great arteries or double outlet right ventricle undergoing the Rastelli procedure. Zhonghua Yi Xue Za Zhi (Taipei) 1997; 59:359-66. [PMID: 9294916] [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: 02/05/2023]
Abstract
BACKGROUND Aortic valved homograft conduits have been valuable in right ventricular outflow tract (RVOT) reconstruction in complex congenital heart disease. METHODS Since 1995, 12 patients ranging in age from 3 to 22 years, with transposition of the great arteries or double outlet right ventricle associated with pulmonary stenosis and ventricular septal defect, underwent the Rastelli procedure with the RVOT reconstruction utilizing cryopreserved aortic valved homograft conduits. RESULTS Operative deaths for three patients were caused by the complexity of the heart defects (25%). One late death (8.33%) occurred as a result of pulmonary embolism one month after conduit implantation. The remaining eight patients (66.67%) survived asymptomatically with a mean postoperative hospitalization of 22 days. Preoperative Doppler echocardiographic flow visualization distinguished not only the corresponding location among the atrium, ventricle and great arteries, but also intracardiac. Mosaic flow pattern could be detected in the right ventricle and right atrium (n = 11). Postoperative echocardiographic flow visualization showed the valved homograft extracardiac conduit lay between the right ventricle and the pulmonary artery, and the valve inside the conduit could faintly be seen. Mosaic flow pattern could be observed with the systole and diastole jet in the cardiac circle (n = 8). Peak velocity and pressure gradient across the pulmonary valve after the Rastelli procedure were significantly decreased when compared with those before operation (4.13 +/- 0.44 m/s vs. 3.15 +/- 1.13 m/s, p = 0.032; 72.46 +/- 15.79 mmHg vs. 39.87 +/- 23.23 mmHg, p = 0.003). However, there were no significant differences between pre- and postoperative peak velocity and pressure gradient beyond the pulmonary valve. CONCLUSIONS Apart from operative mortality, the application of aortic valved homograft conduits were all excellent choice for the correction of complex congenital heart disease.
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Affiliation(s)
- S M Yüan
- Department of Surgery, Fuwai Heart Hospital, Chinese Academy of Medical Sciences, Beijing, P.R.C
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Zhang LS, Honma M, Matsuoka A, Suzuki T, Sofuni T, Hayashi M. Chromosome painting analysis of spontaneous and methyl methanesulfonate-induced trifluorothymidine-resistant L5178Y cell colonies. Mutat Res 1996; 370:181-90. [PMID: 8917664 DOI: 10.1016/s0165-1218(96)00069-9] [Citation(s) in RCA: 12] [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] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Spontaneous and methyl methanesulfonate-induced trifluorothymidine-resistant mutants in mouse lymphoma L5178Y cells were analyzed using fluorescence in situ hybridization with mouse probes specific for chromosome 11, on which the tk gene is located, and chromosome 3, as the control. 76.5% (13/17) of small-colony mutants (thought to be the result of chromosomal mutation) and 28.6% (4/14) of large-colony mutants (thought to be the result of gene mutation) showed rearranged chromosome 11. Of the mutants with abnormal chromosome 11 painting pattern, 5 small- and 2 large-colony mutants carried clonal aberrations, while the remaining 8 small- and 2 large-colony mutants showed mosaic aberrations. Most abnormalities in the small-colony mutants involved the distal region of one painted chromosome 11, where the tk+ gene maps. An increase, rather than a decrease, in chromosome 11 material was found in a majority of abnormally painted mutants. On the contrary, no rearrangements involving chromosome 3 were found in any small- and large-colony mutants analyzed except one large-colony mutant, which showed chromosome rearrangements involving both chromosome 11 and 3. The present study confirms that the majority of small-colony mutants in L5178Y cells have chromosome 11 rearrangements that can be detected by chromosome painting and that the majority of the chromosomal abnormalities in TFT-resistant mutants involved complex rearrangements.
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Affiliation(s)
- L S Zhang
- Division of Genetics and Mutagenesis, National Institute of Health Sciences, Tokyo, Japan
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Fu GS, Yu W, Li XW, Han L, Zhang LS. Dynamic processing of SiH4+CH4 plasma induced by an infrared laser. Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics 1995; 52:5304-5311. [PMID: 9964029 DOI: 10.1103/physreve.52.5304] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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Zhang LS, Honma M, Hayashi M, Suzuki T, Matsuoka A, Sofuni T. A comparative study of TK6 human lymphoblastoid and L5178Y mouse lymphoma cell lines in the in vitro micronucleus test. Mutat Res 1995; 347:105-15. [PMID: 7565900 DOI: 10.1016/0165-7992(95)00027-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Micronucleus induction was compared in human lymphoblastoid TK6 and mouse lymphoma L5178Y cell lines treated with model clastogens and spindle poisons, i.e., X-rays, methyl methanesulfonate, ethyl methanesulfonate, mitomycin C, colcemid, and vincristine. The spontaneous micronucleated cell (MNC) frequency was stable and reproducible in both cell lines. All clastogens and spindle poisons studied here induced micronuclei in both cell lines. They increased MNC frequency at lower concentrations or caused a greater increase at the same concentration in TK6 cells. These clastogens and spindle poisons, however, were also more toxic to TK6 than to L5178Y cells and when comparison was based on cytotoxicity, they showed more efficient MNC induction in L5178Y cells. In conclusion, neither cell line was superior to the other, and both of them can be used as target cells in the in vitro micronucleus assay.
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Affiliation(s)
- L S Zhang
- Division of Genetics and Mutagenesis, National Institute of Health Sciences, Tokyo, Japan
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Zhang LS, Huang Y, Li FY. [Mitochondrial DNA mutation in Leber's hereditary optic neuropathy in China]. Zhonghua Yi Xue Za Zhi 1994; 74:349-51, 390. [PMID: 7994643] [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: 01/28/2023]
Abstract
Leber's hereditary optic neuropathy (LHON), a typical maternally inherited disease, is caused by a single nucleotide change of G to A at the site of nucleotide 11,788 of mtDNA. We used PCR method to analysis mtDNA from 102 individuals of nineteen pedigrees. The results showed that 67% of the patients (30/45) and 55% (29/53) of the maternal relatives have such a mutation, while no mutation exists in the four normal individuals. The results show that Wallace's mutation is a main cause of LHON in China.
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Zhang LS. [A molecular genetic study of Leber's disease]. Zhonghua Yan Ke Za Zhi 1993; 29:103-4. [PMID: 8404350] [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: 01/30/2023]
Abstract
That Leber's hereditary optic neuropathy is caused by a single nucleotide change in the mitochondrial DNA (mtDNA) was first verified by Wallace and his colleagues in 1988. The mtDNA of 11 patients with Leber's disease from different families and of normal persons are analyzed with polymerase chain reaction by the authors, with results that confirm those of Wallace. The procedure is simple and speedy, and hence recommended for clinical utilization.
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Affiliation(s)
- L S Zhang
- Department of Biology, Nanjing Railway Medical College
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Groopman JD, Zhu JQ, Donahue PR, Pikul A, Zhang LS, Chen JS, Wogan GN. Molecular dosimetry of urinary aflatoxin-DNA adducts in people living in Guangxi Autonomous Region, People's Republic of China. Cancer Res 1992; 52:45-52. [PMID: 1727385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Hepatocellular carcinoma is one of the five leading human cancers causing at least 250,000 deaths each year. One of the major risk factors for this disease is exposure to dietary aflatoxins, and the development of appropriate molecular dosimetry biomarkers would facilitate the identification of individuals at risk. This study was undertaken to explore the relationship between dietary intake of aflatoxins and the excretion of the major aflatoxin-DNA adduct and other metabolites into the urine of chronically exposed people. The following protocol was developed for this investigation in Guangxi Autonomous Region, People's Republic of China, where the diets of 30 males and 12 females (ages, 25-64 years) were monitored for 1 week and aflatoxin intake levels determined each day. Starting on the fourth day, total urine volumes were obtained in consecutive 12-h fractions for 3 or 4 days. High performance liquid chromatography and competitive radioimmunoassay analyses were done on each of the urine samples, and the relationships between excretion of total aflatoxin metabolites, aflatoxin-N7-guanine, aflatoxin M1, aflatoxin P1, and aflatoxin B1, and aflatoxin B1 intake values were determined. The average intake of aflatoxin B1 by men was 48.4 micrograms/day, giving a total mean exposure during the study period of 276.8 micrograms. The average daily intake by women was 77.4 micrograms/day, resulting in a total average exposure during the 7-day period of 542.6 micrograms aflatoxin B1. Initial efforts to characterize aflatoxin metabolites in urine samples were with an analysis by competitive radioimmunoassay. The analysis by linear regression of the association between aflatoxin B1 intake/day and total aflatoxin metabolite excretion/day showed a correlation coefficient of only 0.26. These findings stimulated the immunoaffinity/analytical high performance liquid chromatography analysis for individual metabolites. When the data were analyzed by linear regression analysis, the aflatoxin N7-guanine excretion and aflatoxin B1 intake from the previous day showed a correlation coefficient of 0.65 and P less than 0.000001. Similar analysis for aflatoxin M1 resulted in a correlation coefficient of 0.55 and P less than 0.00001, whereas there was no positive statistical association between exposure in the diet and aflatoxin P1 excretion, despite aflatoxin P1 being quantitatively a major metabolite. Analysis of the total aflatoxin-N7-guanine excretion in the urine during the complete collection period plotted against the total aflatoxin B1 exposure in the diet for each of the individuals, smoothing the day to day variations, revealed a correlation coefficient of 0.80 and P less than 0.0000001.(ABSTRACT TRUNCATED AT 400 WORDS)
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Affiliation(s)
- J D Groopman
- Department of Environmental Health Sciences, Johns Hopkins University, School of Hygiene and Public Health, Baltimore, Maryland 21205
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Zhang LS, Yoshida T, Aoki K, Kuroiwa Y. Metabolism of cinobufagin in rat liver microsomes. Identification of epimerized and deacetylated metabolites by liquid chromatography/mass spectrometry. Drug Metab Dispos 1991; 19:917-9. [PMID: 1686236] [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: 12/28/2022] Open
Abstract
The metabolism of cinobufagin (CB) in rat liver microsomes was studied. By comparison of retention times and fragmentation patterns obtained by thermospray LC/MS with those of authentic standards, four metabolites of CB were also identified, in addition to deacetylCB (M1) and 3-epideacetylCB (M2), which have been reported previously. The additional four metabolites were identified to be 3-epiCB (M4), 3-ketoCB (M5), 3-keto-16 beta-OH-deacetylCB (M3), and 3-keto-16 alpha-OH-deacetylCB (M6). The primary metabolic products of CB were M1 and M2, with a small amount of M4 and trace amounts of M3, M5, and M6. These results indicate that major metabolic routes of CB were deacetylation at the 16-position and epimerization at the 3-position via the 3-keto intermediate.
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Affiliation(s)
- L S Zhang
- Department of Biochemical Toxicology, School of Pharmaceutical Sciences, Showa University, Tokyo, Japan
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Abstract
The predominant cultivable bacteria associated with juvenile periodontitis (JP) in China were studied for the first time. Subgingival plaque samples were taken on paper points from 23 diseased sites in 15 JP patients and from 7 healthy sites in 7 control subjects. Serially diluted plaque samples were plated on nonselective blood agar and on MGB agar, a selective medium for the isolation of Actinobacillus actinomycetemcomitans. Fifteen or more isolated colonies from each sample (in sequence without selection) were purified for identification. The results indicated that the microflora in healthy sulci of the 7 control subjects was significantly different from that in diseased sites of JP patients. The predominant species in healthy sulci were Streptococcus spp. and Capnocytophaga gingivalis. In JP patients, Eubacterium sp. was found in significantly higher frequency and proportion. Actinobacillus actinomycetemcomitans was not detected in any samples. It appears that this species is not associated with juvenile periodontitis in China.
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Affiliation(s)
- N M Han
- Department of Periodontology, College of Stomatology, West China University of Medical Sciences, Chengdu
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