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Zhao YM, Wang WH, Zhang W, Wang L, Li S, Wang JW, Liao LE, Yu GY, Sun Z, Qu YL, Gong Y, Lu Y, Wu T, Li YF, Wang Q, Zhao GH, Xiao Y, Ding PR, Zhang Z, Wu AW. [Long-term outcome of patients with rectal cancer who achieve complete or near complete clinical responses after neoadjuvant therapy: a multicenter registry study of data from the Chinese Watch and Wait Database]. Zhonghua Wei Chang Wai Ke Za Zhi 2024; 27:372-382. [PMID: 38644243 DOI: 10.3760/cma.j.cn441530-20240227-00074] [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: 04/23/2024]
Abstract
Objective: To report the long-term outcomes of Chinese rectal cancer patients after adopting a Watch and Wait (W&W) strategy following neoadjuvant therapy (NAT). Methods: This multicenter, cross-sectional study was based on real-world data. The study cohort comprised rectal cancer patients who had achieved complete or near complete clinical responses (cCRs, near-cCRs) after NAT and were thereafter managed by a W&W approach, as well as a few patients who had achieved good responses after NAT and had then undergone local excision for confirmation of pathological complete response. All participants had been followed up for ≥2 years. Patients with distant metastases at baseline or who opted for observation while living with the tumor were excluded. Data of eligible patients were retrospectively collected from the Chinese Wait-and-Watch Data Collaboration Group database. These included baseline characteristics, type of NAT, pre-treatment imaging results, evaluation of post-NAT efficacy, salvage measures, and treatment outcomes. We herein report the long-term outcomes of Chinese rectal cancer patients after NAT and W&W and the differences between the cCR and near-cCR groups. Results: Clinical data of 318 rectal cancer patients who had undergone W&W for over 2 years and been followed up were collected from eight medical centers (Peking University Cancer Hospital, Fudan University Shanghai Cancer Center, Sun Yat-sen University Cancer Center, Shanghai Changhai Hospital, Peking Union Medical College Hospital, Liaoning Cancer Hospital, the First Hospital of Jilin University, and Yunnan Cancer Hospital.) The participants comprised 221 men (69.4%) and 107 women (30.6%) of median age 60 (26-86) years. The median distance between tumor and anal verge was 3.4 (0-10.4) cm. Of these patients, 291 and 27 had achieved cCR or near-cCR, respectively, after NAT. The median duration of follow-up was 48.4 (10.2-110.3) months. The 5-year cumulative overall survival rate was 92.4% (95%CI: 86.8%-95.7%), 5-year cumulative disease-specific survival (CSS) rate 96.6% (95%CI: 92.2%-98.5%), 5-year cumulative organ-preserving disease-free survival rate 86.6% (95%CI: 81.0%-90.7%), and 5-year organ preservation rate 85.3% (95%CI: 80.3%-89.1%). The overall 5-year local recurrence and distant metastasis rates were 18.5% (95%CI: 14.9%-20.8%) and 8.2% (95%CI: 5.4%-12.5%), respectively. Most local recurrences (82.1%, 46/56) occurred within 2 years, and 91.0% (51/56) occurred within 3 years, the median time to recurrence being 11.7 (2.5-66.6) months. Most (91.1%, 51/56) local recurrences occurred within the intestinal lumen. Distant metastases developed in 23 patients; 60.9% (14/23) occurred within 2 years and 73.9% (17/23) within 3 years, the median time to distant metastasis being 21.9 (2.6-90.3) months. Common sites included lung (15/23, 65.2%), liver (6/23, 26.1%), and bone (7/23, 30.4%) The metastases involved single organs in 17 patients and multiple organs in six. There were no significant differences in overall, cumulative disease-specific, or organ-preserving disease-free survival or rate of metastases between the two groups (all P>0.05). The 5-year local recurrence rate was higher in the near-cCR than in the cCR group (41.6% vs. 16.4%, P<0.01), with a lower organ preservation rate (69.2% vs. 88.0%, P<0.001). The success rates of salvage after local recurrence and distant metastasis were 82.1% (46/56) and 13.0% (3/23), respectively. Conclusion: Rectal cancer patients who achieve cCR or near-cCR after NAT and undergo W&W have favorable oncological outcomes and a high rate of organ preservation. Local recurrence and distant metastasis during W&W follow certain patterns, with a relatively high salvage rate for local recurrence. Our findings highlight the importance of close follow-up and timely intervention during the W&W process.
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Affiliation(s)
- Y M Zhao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/ Beijing),Gastrointestinal Cancer Center, Unit III, Peking University Cancer Hospital & Institute, Beijing 100142,China
| | - W H Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - W Zhang
- Department of Colorectal Surgery, Changhai Hospital, Navy Medical University, Shanghai 200433, China
| | - L Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/ Beijing),Gastrointestinal Cancer Center, Unit III, Peking University Cancer Hospital & Institute, Beijing 100142,China
| | - S Li
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - J W Wang
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai Key Laboratory of Radiation Oncology, Shanghai 200032, China
| | - L E Liao
- Department of Colorectal Surgery, Sun Yat - sen University Cancer Center, Guangzhou 510060, China
| | - G Y Yu
- Department of Colorectal Surgery, Changhai Hospital, Navy Medical University, Shanghai 200433, China
| | - Z Sun
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - Y L Qu
- Department of General Surgery, Liaoning Cancer Hospital, Shenyang 110042, China
| | - Y Gong
- Department of Gastrocolorectal Surgery, the First Hospital of Jilin University, Changchun 130021,China
| | - Y Lu
- Department of General Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266555,China
| | - T Wu
- Department of Colorectal Surgery, Yunnan Cancer Hospital, Kunming 650118, China
| | - Y F Li
- Department of Colorectal Surgery, Yunnan Cancer Hospital, Kunming 650118, China
| | - Q Wang
- Department of Gastrocolorectal Surgery, the First Hospital of Jilin University, Changchun 130021,China
| | - G H Zhao
- Department of General Surgery, Liaoning Cancer Hospital, Shenyang 110042, China
| | - Y Xiao
- Department of General Surgery, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100730, China
| | - P R Ding
- Department of Colorectal Surgery, Sun Yat - sen University Cancer Center, Guangzhou 510060, China
| | - Z Zhang
- Department of Radiation Oncology, Fudan University Shanghai Cancer Center, Department of Oncology, Shanghai Medical College, Fudan University, Shanghai Key Laboratory of Radiation Oncology, Shanghai 200032, China
| | - A W Wu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/ Beijing),Gastrointestinal Cancer Center, Unit III, Peking University Cancer Hospital & Institute, Beijing 100142,China State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Beijing Key Laboratory of Carcinogenesis and Translational Research, Gastrointestinal Cancer Center, Unit III, Peking University Cancer Hospital & Institute, Beijing 100142, China
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Zhao MH, Sun TT, Wang L, Huang YL, Xie XY, Lu Y, Zhao GH, Wu AW. [Reassessment of practice of Chinese surgeons since introduction of the watch and wait strategy after neoadjuvant therapy for rectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2024; 27:383-394. [PMID: 38644244 DOI: 10.3760/cma.j.cn441530-20240108-00011] [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: 04/23/2024]
Abstract
Objective: To investigate perspectives and changes in treatment selection by Chinese surgeons since introduction of the watch-and-wait approach after neoadjuvant therapy for rectal cancer. Methods: A cross-sectional survey was conducted using a questionnaire distributed through the "Wenjuanxing" online survey platform. The survey focused on the recognition and practices of Chinese surgeons regarding the strategy of watch-and-wait after neoadjuvant therapy for rectal cancer and was disseminated within the China Watch-and-Wait Database (CWWD) WeChat group. This group targets surgeons of deputy chief physician level and above in surgical, radiotherapy, or internal medicine departments of nationally accredited tumor-specialist or comprehensive hospitals (at provincial or municipal levels) who are involved in colorectal cancer diagnosis and treatment. From 13 to 16 December 2023, 321 questionnaires were sent with questionnaire links in the CWWD WeChat group. The questionnaires comprised 32 questions encompassing: (1) basic physician characteristics (including surgical volume); (2) assessment methods and criteria for clinical complete response (cCR); (3) patients eligible for watch-and-wait; (4) neoadjuvant therapies and other measures for achieving cCR; (5) willingness to implement watch-and-wait and factors influencing that willingness; (6) risks and monitoring of watch-and-wait; (7) subsequent treatment and follow-up post watch-and-wait; (8) suggestions for development of the CWWD. Descriptive statistics were employed for data analysis, with intergroup comparisons conducted using the χ2 or Fisher's exact probability tests. Results: The response rate was 31.5%, comprising 101 responses from the 321 individuals in the WeChat group. Respondents comprised 101 physicians from 70 centers across 23 provinces, municipalities, and autonomous regions nationwide, 85.1% (86/101) of whom represented provincial tertiary hospitals. Among the respondents, 87.1% (88/101) had implemented the watch-and-wait strategy. The approval rate (65.6%, 21/32) and proportion of patients often informed (68.8%, 22/32) were both significantly higher for doctors in oncology hospitals than for those in general hospitals (27.7%, 18/65; 32.4%, 22/68) (χ2=12.83, P<0.001; χ2=11.70, P=0.001, respectively). The most used methods for diagnosing cCR were digital rectal examination (90.1%, 91/101), colonoscopy (91.1%, 92/101), and rectal T2-weighted magnetic resonance imaging (86.1%, 87/101). Criteria used to identify cCR comprised absence of a palpable mass on digital rectal examination (87.1%, 88/101), flat white scars or new capillaries on colonoscopy (77.2%, 78/101), absence of evident tumor signals on rectal T2-weighted sequences or T2WI low signals or signals equivalent to the intestinal wall (83.2%, 84/101), and absence of tumor hyperintensity on diffusion-weighted imaging with no corresponding hypointensity on apparent diffusion coefficient maps (66.3%, 67/101). As for selection of neoadjuvant regimen and assessment of cCR, 57.4% (58/101) of physicians preferred a long course of radiotherapy with or without induction and/or consolidation capecitabine + oxaliplatin, whereas 25.7% (26/101) preferred immunotherapy in combination with chemotherapy and concurrent radiotherapy. Most (96.0%, 97/101) physicians believed that the primary lesion should be assessed ≤12 weeks after completion of radiotherapy. Patients were frequently informed about the possibility of achieving cCR after neoadjuvant therapy and the strategy of watch-and-wait by 43.6% (44/101) of the responding physicians and 38.6% (39/101) preferred watch-and-wait for patients who achieved cCR or near cCR after neoadjuvant therapy for rectal cancer. Capability for multiple follow-up evaluations (70.3%, 71/101) was a crucial factor influencing physicians' choice of watch-and-wait after cCR. The proportion who patients who did not achieve cCR and underwent surgical treatment was lower in provincial tertiary hospitals (74.2%, 23/31) than in provincial general hospitals (94.5%, 52/55) and municipal hospitals (12/15); these differences are statistically significant (χ2=7.43, P=0.020). The difference between local recurrence and local regrowth was understood by 88.1% (89/101) of respondents and 87.2% (88/101) agreed with monitoring every 3 months for 5 years. An increase in local excision or puncture rates to reduce organ resections in patients with pCR was proposed by 64.4% (65/101) of respondents. Conclusion: Compared with the results of a previous survey, Chinese surgeons' awareness of the watch-and-wait concept has improved significantly. Oncologists in oncology hospitals are more aware of the concept of watch-and-wait.
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Affiliation(s)
- M H Zhao
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/ Beijing),Gastrointestinal Cancer Center, Unit III, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - T T Sun
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/ Beijing),Gastrointestinal Cancer Center, Unit III, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - L Wang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/ Beijing),Gastrointestinal Cancer Center, Unit III, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - Y L Huang
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/ Beijing),Gastrointestinal Cancer Center, Unit III, Peking University Cancer Hospital & Institute, Beijing 100142, China
| | - X Y Xie
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Department of Radiation Oncology, Peking University Cancer Hospital & Institute, Beijing 100191, China
| | - Y Lu
- Department of Gastrointestinal Surgery of Qingdao University Affiliated Hospital, Qingdao 266000, China
| | - G H Zhao
- Department of General Surgery, Cancer Hospital of China Medical University, Shenyang 110042, China
| | - A W Wu
- Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/ Beijing),Gastrointestinal Cancer Center, Unit III, Peking University Cancer Hospital & Institute, Beijing 100142, China State Key Laboratory of Holistic Integrative Management of Gastrointestinal Cancers, Beijing Key Laboratory of Carcinogenesis and Translational Research, Gastrointestinal Cancer Center, Unit III, Peking University Cancer Hospital & Institute, Beijing 100142, China
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Chen Y, Liu L, Xing YY, Li Q, Zhao GH, Lu YY, Yang JJ. Down-regulation of miR-365 suppresses cerebral ischemia injury by targeting IGF1R. J BIOL REG HOMEOS AG 2020; 34:1857-1862. [PMID: 33103413 DOI: 10.23812/20-321-l] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Y Chen
- Department of Geriatrics, Shandong Provincial Third Hospital, Jinan, China
| | - L Liu
- Department of Neurology, Shandong Provincial Third Hospital, Jinan, China
| | - Y Y Xing
- Department of Neurology, Shandong Provincial Third Hospital, Jinan, China
| | - Q Li
- Department of Neurology, Shandong Provincial Third Hospital, Jinan, China
| | - G H Zhao
- Department of Neurology, Shandong Provincial Third Hospital, Jinan, China
| | - Y Y Lu
- Department of Neurology, Shandong Provincial Third Hospital, Jinan, China
| | - J J Yang
- Department of General practice, Shandong Provincial Third Hospital, Jinan, China
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Nie GK, Xu C, Wei QK, Li J, Xiao T, Sun H, Kong XL, Yin K, Zhao GH, Zhang BG, Yan G, Huang BC. [Analysis of drug - resistant gene polymorphisms in Plasmodium falciparum imported from Equatorial Guinea to Shandong Province in 2015 and 2016]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020; 32:612-617. [PMID: 33325196 DOI: 10.16250/j.32.1374.2020114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
OBJECTIVE To investigate the drug-resistant gene polymorphisms in Plasmodium falciparum imported from Equatorial Guinea to Shandong Province. METHODS From 2015 to 2016, blood samples were collected from imported P. falciparum malaria patients returning from Equatorial Guinea to Shandong Province, and genome DNA of the malaria parasite was extracted. The drug-resistant Pfcrt, Pfmdr1, Pfdhfr, Pfdhps, and K13 genes of P. falciparum were amplified using a PCR assay, followed by DNA sequencing, and the sequences were aligned. RESULTS The target fragments of all 5 drug-resistant genes of P. falciparum were successfully amplified and sequenced. There were 72.8%, 18.6%, and 8.6% of P. falciparum parasites carrying the wild-, mutant-, and mixed-type Pfcrt gene, respectively, and all mutant haplotypes were CVIET (the underline indicates the mutation site). There were 20.0%, 61.4% and 18.6% of P. falciparum parasites carrying the wild-, mutant-, and mixed-type Pfmdr1 gene, respectively, and the mutant haplotypes mainly included YF and NF (the underlines indicate the mutation sites). There were 1.4%, 98.6%, and 0 of P. falciparum parasites carrying the wild-, mutant-, and mixed-type Pfdhfr gene, respectively, and AIRNI was the predominant mutant haplotype (the underline indicates the mutation site). There were 1.4%, 94.3%, and 4.3% of P. falciparum parasites carrying the wild-, mutant-, and mixed-type Pfdhps gene, respectively, and SGKAA was the predominant mutant haplotype (the underline indicates the mutation site). The complete drug-resistant IRNGE genotype consisted of 8.6% of the Pfdhfr and Pfdhps genes, and the K13 gene A578S mutation occurred in 1.4% of the parasite samples. CONCLUSIONS There are mutations in the Pfcrt, Pfmdr1, Pfdhfr, Pfdhps, and K13 genes of P. falciparum imported from Equatorial Guinea to Shandong Province, with a low frequency in the Pfcrt gene mutation and a high frequency in the Pfmdr1, Pfdhfr, and Pfdhps gene mutations, and the K13 gene A578S mutation is detected in the parasite samples.
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Affiliation(s)
- G K Nie
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
- School of Medicine and Life Sciences, Shandong Academy of Medical Sciences, University of Jinan, China
- Jining Health School, Shandong Province, China
| | - C Xu
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| | - Q K Wei
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
- School of Medicine and Life Sciences, Shandong Academy of Medical Sciences, University of Jinan, China
| | - J Li
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| | - T Xiao
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| | - H Sun
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
- School of Medicine and Life Sciences, Shandong Academy of Medical Sciences, University of Jinan, China
| | - X L Kong
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| | - K Yin
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
- School of Medicine and Life Sciences, Shandong Academy of Medical Sciences, University of Jinan, China
| | - G H Zhao
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| | - B G Zhang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| | - G Yan
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
| | - B C Huang
- Shandong Institute of Parasitic Diseases, Shandong First Medical University & Shandong Academy of Medical Sciences, Jining 272033, China
- School of Medicine and Life Sciences, Shandong Academy of Medical Sciences, University of Jinan, China
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Zhang HJ, Song JK, Wu XM, Li YH, Wang Y, Lin Q, Zhao GH. First report of Giardia duodenalis genotypes in Zangxiang pigs from China. Parasitol Res 2019; 118:2305-2310. [PMID: 31079254 DOI: 10.1007/s00436-019-06340-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2018] [Accepted: 04/29/2019] [Indexed: 11/24/2022]
Abstract
Giardia duodenalis is an important zoonotic intestinal protozoan of animals and humans. We collected 450 faecal specimens from four age groups (pre-weaned piglets, weaned piglets, juveniles, adults) of Zangxiang pigs from Shaanxi and Qinghai provinces, to investigate the prevalence and genetic diversity of G. duodenalis at the β-giardin (bg), triosephosphate isomerase (tpi) and glutamate dehydrogenase (gdh) loci using nested PCRs in the present study. A total of 28 faecal samples were positive for presence of G. duodenalis, with an overall prevalence of 6.2%. Giardia duodenalis was detected in pigs from all age groups and in both investigated provinces. Significant differences (P < 0.0001) in prevalence were observed among the four age groups with prevalence decreasing with age. Sequence analysis indicated existence of genetic diversity of G. duodenalis isolates from Zangxiang pigs, with 4, 2 and 4 haplotypes at the bg, tpi and gdh loci, respectively. Two assemblages were identified, including the zoonotic assemblage B and assemblage E, with the latter as the predominant assemblage found in both locations and all age groups except adults. The present study expanded the host range of G. duodenalis and provided fundamental data for controlling G. duodenalis infection in Zangxiang pigs.
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Affiliation(s)
- H J Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi Province, People's Republic of China
| | - J K Song
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi Province, People's Republic of China
| | - X M Wu
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi Province, People's Republic of China
| | - Y H Li
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi Province, People's Republic of China
| | - Y Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi Province, People's Republic of China
| | - Q Lin
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi Province, People's Republic of China.
| | - G H Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, 712100, Shaanxi Province, People's Republic of China.
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Zhao GH, Li WF, Li C, Shi PP, Jiang S, He YW. [Efficacy of continuous positive airway pressure on patients with refractory otitis media with effusion]. Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2018; 32:949-950. [PMID: 29921081 DOI: 10.13201/j.issn.1001-1781.2018.12.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Key Words] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Indexed: 06/08/2023]
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Zhao GH, Hu XF, Liu TL, Hu RS, Yu ZQ, Yang WB, Wu YL, Yu SK, Song JK. Correction to: Molecular characterization of Blastocystis sp. in captive wild animals in Qinling Mountains. Parasitol Res 2017; 117:343-344. [PMID: 29204717 DOI: 10.1007/s00436-017-5692-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
There were errors in Fig. 1 of the originally published article. Correct fig. 1 is presented here.
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Affiliation(s)
- G H Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China
| | - X F Hu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China
| | - T L Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China
| | - R S Hu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China
| | - Z Q Yu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China
| | - W B Yang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China
| | - Y L Wu
- Xian Qinling Wildlife Park, Xian, Shaanxi Province, 710100, People's Republic of China
| | - S K Yu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China.
| | - J K Song
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China.
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Peng T, Wang LM, Wu JX, Liu M, Li XY, Rong WQ, Wu F, Zhao WQ, Zhao GH. [Effects of perioperative transfusion of blood components on the long-term prognosis of hepatocellular carcinoma]. Zhonghua Yi Xue Za Zhi 2017; 97:1079-1083. [PMID: 28395433 DOI: 10.3760/cma.j.issn.0376-2491.2017.14.011] [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 investigate the effects of perioperative transfusion of blood components on the long-term prognosis of hepatocellular carcinoma (HCC) patients. Methods: A total of 339 patients with primary HCC who underwent curative hepatectomy between January 2003 and December 2010 at the Cancer Hospital, Chinese Academy of Medical Sciences were enrolled. The clinical data of the patients were retrospectively analyzed. These patients were divided into non-transfusion, fresh frozen plasma (FFP) transfusion only and concentrated red cells (CRC) transfusion groups. Disease-free survival and overall survival were estimated using the Kaplan-Meier method, and Cox regression was performed to identify clinicopathological factors related with survival. Results: Among the 339 patients, the 1-, 3- and 5-year disease-free survival rates were 63.1%, 35.4% and 22.4%, respectively, and the median disease-free survival was 22 months. While the 1-, 3- and 5-year overall survival rates were 90.5%, 69.5% and 56.4%, respectively, and the median overall survival was 72 months. The median disease-free survivals of the non-transfusion (n=181), FFP transfusion only (n=48) and CRC transfusion (n=110) groups were 28, 22 and 12 months, respectively, while the median overall survivals of the three groups were 99, 63 and 40 months respectively. Significant differences in the disease-free and overall survivals were observed among the three groups (both P<0.01). Multivariate Cox regression analyses showed that FFP transfusion only (HR=1.658, P=0.026), CRC transfusion (HR=1.470, P=0.030), serum alpha-fetoprotein>400 μg/L (HR=1.686, P=0.002), albumin<35 g/L (HR=1.782, P=0.047), tumor capsule (HR=0.597, P=0.012), tumor necrosis (HR=1.820, P=0.001) and the TNM stage Ⅲ or above (HR=2.537, P=0.000) were independent predictors of overall survival after hepatectomy. Conclusion: Both perioperative FFP only transfusion and CRC transfusion may have detrimental effect on the long-term prognosis of HCC.
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Affiliation(s)
- T Peng
- Department of Blood Transfusion, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Liu L, Zhao GH, Gao QQ, Chen YJ, Chen ZP, Xu ZS, Li WD. Changes of mineralogical characteristics and osteoblast activities of raw and processed pyrites. RSC Adv 2017. [DOI: 10.1039/c7ra03970k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Pyrite, a commonly used mineral medicine in traditional Chinese medicine (TCM), is normally prescribed in the form of calcined or processed pyrite to ensure clinical safety and efficacy.
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Affiliation(s)
- L. Liu
- College of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
| | - G. H. Zhao
- College of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
| | - Q. Q. Gao
- College of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
| | - Y. J. Chen
- Modern Analysis Center of Nanjing University
- Nanjing
- China
| | - Z. P. Chen
- College of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
- Engineering Center of State Ministry of Education for Standardization of Chinese Medicine Processing
| | - Z. S. Xu
- Wuhu Pure Sunshine Natural Medicine Company Limited
- Wuhu
- China
| | - W. D. Li
- College of Pharmacy
- Nanjing University of Chinese Medicine
- Nanjing
- China
- Engineering Center of State Ministry of Education for Standardization of Chinese Medicine Processing
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10
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Wang XT, Wang RJ, Ren GJ, Yu ZQ, Zhang LX, Zhang SY, Lu H, Peng XQ, Zhao GH. Multilocus genotyping of Giardia duodenalis and Enterocytozoon bieneusi in dairy and native beef (Qinchuan) calves in Shaanxi province, northwestern China. Parasitol Res 2016; 115:1355-61. [DOI: 10.1007/s00436-016-4908-6] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2015] [Accepted: 01/08/2016] [Indexed: 11/24/2022]
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11
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Zhao GH, Fang YQ, Ryan U, Guo YX, Wu F, Du SZ, Chen DK, Lin Q. Dynamics of Th17 associating cytokines in Cryptosporidium parvum-infected mice. Parasitol Res 2015; 115:879-87. [PMID: 26593737 DOI: 10.1007/s00436-015-4831-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Accepted: 11/10/2015] [Indexed: 12/20/2022]
Abstract
Cryptosporidium parvum commonly inhabits the intestinal tract of animals and humans and can cause acute watery diarrhea and weight loss. However, host immune responses to Cryptosporidium infections are not fully understood. IL-17 (also called IL-17A) is a pro-inflammatory cytokine of Th17 cells that plays a role in the host response to Cryptosporidium baileyi infection. The present study examined levels of IL-17-specific messenger RNA (mRNA) and Th17 associating cytokines in C. parvum-infected immune-suppressed BALB/c mice using real-time quantitative PCR (qPCR). Levels of IL-17 protein were determined by ELISA. The results showed that levels of IL-17 mRNA and Th17 cell-related cytokines, namely TGF-β, IL-6, STAT-3, RORγt, IL-22, TNF-α, and IL-23, were significantly increased (P < 0.05) in gut-associated lymphoid tissue (GALT) and spleen. IL-17 protein levels in GALT were also significantly increased (P < 0.05) after infection. The present study suggested that Th17 cells play a role in host-C. parvum interaction. These results could inform future studies of the immune response against C. parvum infection in transient immunosuppressed populations.
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Affiliation(s)
- G H Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China
| | - Y Q Fang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China
| | - U Ryan
- School of Veterinary and Life Sciences, Murdoch University, Murdoch, WA, 6150, Australia
| | - Y X Guo
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China
| | - F Wu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China
| | - S Z Du
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China
| | - D K Chen
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China.
| | - Q Lin
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province, 712100, People's Republic of China.
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12
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Qi MZ, Fang YQ, Wang XT, Zhang LX, Wang RJ, Du SZ, Guo YX, Jia YQ, Yao L, Liu QD, Zhao GH. Molecular characterization of Cryptosporidium spp. in pre-weaned calves in Shaanxi Province, north-western China. J Med Microbiol 2014; 64:111-116. [PMID: 25385243 DOI: 10.1099/jmm.0.079327-0] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Cryptosporidium, a worldwide protozoan parasite, is one of the most common causes of diarrhoea in humans and animals. The aim of the present study was to determine Cryptosporidium species/genotypes in pre-weaned calves in Shaanxi Province using PCR and sequencing based on the small subunit rRNA gene. A total of 258 faecal samples were collected from pre-weaned calves in 19 different farms from six areas in Shaanxi Province, north-western China. Cryptosporidium infection was detected in 14 of 19 farms (73.7 %), with a total prevalence of 20.2 % (52/258). Both dairy and Qinchuan (beef) cattle were found with Cryptosporidium infection. Three Cryptosporidium species, namely Cryptosporidium bovis (n = 26), Cryptosporidium andersoni (n = 14) and Cryptosporidium ryanae (n = 12), were detected in pre-weaned calves in Shaanxi Province, with C. bovis (in 12 farms) identified as the most common species on cattle farms. Two additional and previously unknown C. ryanae genotypes, CRTypes III and IV, were observed in the present study. However, the zoonotic species, Cryptosporidium parvum, was not detected in this study, which suggested a low zoonotic potential in Cryptosporidium-infected pre-weaned calves in this province.
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Affiliation(s)
- M Z Qi
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - Y Q Fang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - X T Wang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - L X Zhang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan Province 450002, PR China
| | - R J Wang
- College of Animal Science and Veterinary Medicine, Henan Agricultural University, Zhengzhou, Henan Province 450002, PR China
| | - S Z Du
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - Y X Guo
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - Y Q Jia
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - L Yao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - Q D Liu
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
| | - G H Zhao
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi Province 712100, PR China
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13
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Li J, Zhao GH, Chen F, Song HQ, Zhu XQ, Zhao GH, Li J, Chen F, Lin RQ, Weng YB, Mahmoud MS, Zou FC. A cleaved amplified polymorphic sequence (CAPS) method for the identification of geographical isolates of Schistosoma japonicum in China. Ann Trop Med Parasitol 2011; 105:531-6. [PMID: 22185948 PMCID: PMC4100313 DOI: 10.1179/2047773211y.0000000004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2011] [Revised: 10/21/2011] [Accepted: 10/24/2011] [Indexed: 10/31/2022]
Affiliation(s)
- J Li
- State Key Laboratory of Veterinary Etiological Biology, Key Laboratory of Veterinary Parasitology of Gansu Province, Lanzhou Veterinary Research Institute, CAAS, Lanzhou 730046, China
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14
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Lin Q, Li HM, Gao M, Wang XY, Ren WX, Cong MM, Tan XC, Chen CX, Yu SK, Zhao GH. Characterization of Baylisascaris schroederi from Qinling subspecies of giant panda in China by the first internal transcribed spacer (ITS-1) of nuclear ribosomal DNA. Parasitol Res 2011; 110:1297-303. [PMID: 21870244 DOI: 10.1007/s00436-011-2618-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2011] [Accepted: 08/05/2011] [Indexed: 11/26/2022]
Abstract
In the present study, a total of 20 nematode isolates, (including 10 male and 10 female worms) representing Baylisascaris schroederi from 5 Qinling subspecies of giant pandas (Ailuropoda melanoleuca) in Shaanxi Province of China, were characterized and grouped genetically by the first internal transcribed spacer (ITS-1) of nuclear ribosomal DNA (rDNA). The rDNA fragment spanning 3' end of 18S rDNA, complete ITS-1 rDNA, and 5' end of 5.8S rDNA were amplified and sequenced. The sequence variability in ITS-1 rDNA was examined within B. schroederi and among parasites in order Ascaridata available in GenBank™, and their phylogenetic relationships were also reconstructed. The sequences of ITS-1 rDNA for all the B. schroederi isolates were 427 bp in length, with no genetic variation detected among these isolates. Phylogenetic analyses based on the ITS-1 rDNA sequences revealed that all the male and female B. schroederi isolates sequenced in the present study were posited into the clade of genus Baylisascaris, sistered to zoonotic nematodes in genus Ascaris, and the ITS-1 rDNA sequence could distinguish different species in order Ascaridata. These results showed that the ITS-1 rDNA provides a suitable molecular marker for the inter-species phylogenetic analysis and differential identification of nematodes in order Ascaridata.
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Affiliation(s)
- Q Lin
- College of Veterinary Medicine, Northwest A & F University, Yangling, Shaanxi Province 712100, People's Republic of China
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15
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Ai L, Weng YB, Elsheikha HM, Zhao GH, Alasaad S, Chen JX, Li J, Li HL, Wang CR, Chen MX, Lin RQ, Zhu XQ. Genetic diversity and relatedness of Fasciola spp. isolates from different hosts and geographic regions revealed by analysis of mitochondrial DNA sequences. Vet Parasitol 2011; 181:329-34. [PMID: 21524854 DOI: 10.1016/j.vetpar.2011.03.057] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2010] [Revised: 03/24/2011] [Accepted: 03/31/2011] [Indexed: 10/18/2022]
Abstract
The present study examined sequence variability in a portion of the mitochondrial cytochrome c oxidase subunit 1 (pcox1) and NADH dehydrogenase subunits 4 and 5 (pnad4 and pnad5) among 39 isolates of Fasciola spp., from different hosts from China, Niger, France, the United States of America, and Spain; and their phylogenetic relationships were re-constructed. Intra-species sequence variations were 0.0-1.1% for pcox1, 0.0-2.7% for pnad4, and 0.0-3.3% for pnad5 for Fasciola hepatica; 0.0-1.8% for pcox1, 0.0-2.5% for pnad4, and 0.0-4.2% for pnad5 for Fasciola gigantica, and 0.0-0.9% for pcox1, 0.0-0.2% for pnad4, and 0.0-1.1% for pnad5 for the intermediate Fasciola form. Whereas, nucleotide differences were 2.1-2.7% for pcox1, 3.1-3.3% for pnad4, and 4.2-4.8% for pnad5 between F. hepatica and F. gigantica; were 1.3-1.5% for pcox1, 2.1-2.9% for pnad4, 3.1-3.4% for pnad5 between F. hepatica and the intermediate form; and were 0.9-1.1% for pcox1, 1.4-1.8% for pnad4, 2.2-2.4% for pnad5 between F. gigantica and the intermediate form. Phylogenetic analysis based on the combined sequences of pcox1, pnad4 and pnad5 revealed distinct groupings of isolates of F. hepatica, F. gigantica, or the intermediate Fasciola form irrespective of their origin, demonstrating the usefulness of the mtDNA sequences for the delineation of Fasciola species, and reinforcing the genetic evidence for the existence of the intermediate Fasciola form.
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Affiliation(s)
- L Ai
- College of Animal Science and Veterinary Medicine, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang Province 163319, PR China
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16
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Su QL, Song HQ, Lin RQ, Yuan ZG, Yang JF, Zhao GH, Huang WY, Zhu XQ. The detection of "Candidatus Mycoplasma haemobos" in cattle and buffalo in China. Trop Anim Health Prod 2010; 42:1805-8. [PMID: 20596775 DOI: 10.1007/s11250-010-9640-0] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/17/2010] [Indexed: 12/01/2022]
Abstract
"Candidatus Mycoplasma haemobos" is a hemoplasma species found in cattle and has been recently reported in Switzerland and Japan. In this study, "Candidatus Mycoplasma haemobos" was shown to occur in cattle and buffalo in tropical China by PCR amplification and sequence analysis of the 16S rRNA gene from blood samples. Based on the 16S rDNA sequence, a specific PCR assay was developed. Occurrence of "Candidatus Mycoplasma haemobos" in cattle and buffalo in Guangxi, China, was determined by examining 25 buffalo blood samples, 12 yellow cattle blood samples and 42 dairy cow blood samples. The results showed that 32% (8/25) of buffalo, 41.7% (5/12) of yellow cattle, and 14.3% (6/42) of dairy cows were positive for "Candidatus Mycoplasma haemobos", respectively. Direct sequencing of representative PCR products confirmed that the amplified partial 16S rDNA sequence represented "Candidatus Mycoplasma haemobos". This is the first report of "Candidatus Mycoplasma haemobos" in buffalo, yellow cattle, and dairy cows in China.
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Affiliation(s)
- Q L Su
- Guangxi Veterinary Research Institute, 51 Youai Bei Road, Nanning, Guangxi Zhuang Nationality Autonomous Region, 530001, People's Republic of China
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17
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Li J, Zhao GH, Zou FC, Mo XH, Yuan ZG, Ai L, Li HL, Weng YB, Lin RQ, Zhu XQ. Combined mitochondrial 16S and 12S rDNA sequences: an effective genetic marker for inter-species phylogenetic analysis of zoonotic trematodes. Parasitol Res 2010; 107:561-9. [PMID: 20461407 DOI: 10.1007/s00436-010-1895-x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2010] [Accepted: 04/23/2010] [Indexed: 11/26/2022]
Abstract
The present study studied the genetic variation among Schistosoma japonicum isolates from different endemic regions in mainland China and examined the phylogenetic relationships of zoonotic trematodes using the combined mitochondrial 16S and 12S ribosomal DNA sequences. The fragments of 16S and 12S rDNA were amplified from 22 S. japonicum isolates, and sequenced, and the relevant sequences of other nine trematode species belonging to six genera in four families were downloaded from GenBank, and their phylogenetic relationships were re-constructed by unweighted pair-group method with arithmetic averages analyses using the combined 16S and 12S rDNA sequences, with Trichinella spiralis as outgroup. The results showed that the partial sequences of mitochondrial 16S and 12S rDNA of S. japonicum were 757 and 797 bp, respectively, and they were quite conserved among the S. japonicum isolates. Phylogenetic analysis revealed that the combined 16S and 12S rDNA sequences were not able to distinguish S. japonicum isolates in mountainous areas from those in lake/marshland areas in mainland China. However, the combined sequences could distinguish different species of zoonotic trematodes. Therefore, the combined mitochondrial 16S and 12S rDNA sequences provide an effective molecular marker for the inter-species phylogenetic analysis and differential identification of zoonotic trematodes.
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Affiliation(s)
- J Li
- College of Veterinary Medicine, South China Agricultural University, Tianhe District, Guangzhou, Guangdong Province, People's Republic of China
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18
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Zhao GH, Li J, Zou FC, Liu W, Mo XH, Lin RQ, Yuan ZG, Weng YB, Song HQ, Zhu XQ. Heterogeneity of class I and class II MHC sequences in Schistosoma japonicum from different endemic regions in mainland China. Parasitol Res 2009; 106:201-6. [PMID: 19830455 DOI: 10.1007/s00436-009-1652-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2009] [Accepted: 10/01/2009] [Indexed: 11/26/2022]
Abstract
The present study examined sequence variation in class I and class II major histocompatibility complex (MHC) genes among Schistosoma japonicum isolates from different endemic regions in mainland China and assessed the level of horizontal gene transfer and sequence similarity between parasites and their hosts. S. japonicum cercariae were used to infect male adult rabbits to obtain adult S. japonicum samples. A portion of the class I MHC gene (pMHC I) and class II MHC genes (pMHC II) were amplified separately from individual adult trematodes by polymerase chain reaction and sequenced. Among all the examined isolates of S. japonicum, sequence differences between male and female parasites were 0.0-26.6% for pMHC I and 0.0-7.0% for pMHC II. Sequence variations between male and female parasites among different geographical locations from the mountainous areas were 1.1-26.6% for pMHC I and 1.5-3.0% for pMHC II. Sequence variations between samples from Yunnan and those from Sichuan were 2.7-23.5% for pMHC I and 1.1-3.7% for pMHC II. In the lake/marshland areas, sequence variations between male and female parasites among different geographical locations were 0.0-25.0% for pMHC I and 0.0-7.0% for pMHC II. Sequence variations between S. japonicum isolates from mountainous areas, and those from lake/marshland areas were 0.0-26.1% for pMHC I and 0.4-6.1% for pMHC II. BLASTN analysis indicated that all the pMHC II sequences showed high homology to a portion of exon 3 in rabbit MHC class II DP beta gene with more than 89% similarity, and all the pMHC I sequences except isolates in Yunnan (Eryuan) revealed high homology to the portion of exon 2 in rabbit MHC I gene with more than 81% similarity. Phylogenetic analysis showed no specific clustering comprising parasites from single geographical or endemic regions, and the paired parasites were even found in different clusters. These results demonstrated that pMHC I and II of S. japonicum isolates in mainland China existed heterogeneity, but the pMHC I, II, or combined sequences were not suitable markers for examining genetic relationship among different isolates from endemic regions in mainland China.
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Affiliation(s)
- G H Zhao
- Laboratory of Parasitology, College of Veterinary Medicine, South China Agricultural University, Guangzhou, Guangdong Province, 510642, People's Republic of China
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19
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Yang L, Liu YF, Wu G, Zhang JL, Wang FS, Fu DZ, Zhao GH, Li TM. Blocking the CC chemokine receptor 5 pathway by antisense peptide nucleic acid prolongs islet allograft survival. Transplant Proc 2007; 39:185-90. [PMID: 17275502 DOI: 10.1016/j.transproceed.2006.10.193] [Citation(s) in RCA: 7] [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] [Received: 05/22/2006] [Indexed: 12/31/2022]
Abstract
Chemokines are important regulators in the development, differentiation, and anatomic location of leukocytes. The CC chemokine receptor 5 (CCR5) is the receptor for the proinflammatory chemokines and plays an important role in islet allograft rejection. Peptide nucleic acid (PNA) is a nucleic acid analog in which the sugar phosphate backbone of natural nucleic acid has been replaced by a synthetic peptide backbone. Studies indicate that PNA inhibits both transcription and translation of targeted genes. Fullly major histocompatibility complex (MHC)-mismatched murine islet transplant models were used to test the in vivo effect of PNA CCR5 by targeting CCR5 in acute allograft rejection. PNA CCR5-treated recipients demonstrated significant prolongation (12.0 +/- 1.75 days) of functional allograft survival compared with saline (6.5 +/- 0.58 days)- or PNA mismatch-treated recipients (6.5 +/- 0.50 days). The PNA CCR5 blocked the expression of CCR5 in spleen CD3+ T cells. Lymphocytes from PNA CCR5-treated mice exhibited a reduced degree of proliferation comparable to that of saline- and PNA mismatch-treated mice. The present study indicated that PNA CCR5 has a substantial therapeutic effect to inhibit acute allograft rejection.
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Affiliation(s)
- L Yang
- Department of Transplantation, the First Affiliated Hospital of China Medical University, Shenyang City, Liaoning Province, China.
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20
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Abstract
In 16HBE transformed human bronchial epithelial cells, histamine stimulated interleukin (IL)-8 mRNA and protein secretion, and this histamine stimulation was inhibited by the H1-receptor antagonist diphenhydramine (DPH), by the inhibitor of 5-lipoxygenase-activating protein (FLAP) MK-886, by the 5-lipoxygenase inhibitor Zileuton, and by dexamethasone. Histamine stimulated bronchial epithelial cell production of leukotriene B4 (LTB4), and this production was inhibited by FLAP inhibitors MK-886 and L-655,238 and Zileuton. Histamine stimulated IL-8 luciferase reporter gene activity that was inhibited with DPH, dexamethasone, MK-886 and L-655,238, and Zileuton. The inhibition of IL-8 transcription and protein secretion by FLAP inhibitors and Zileuton was reversed with exogenous LTB4. There was increased IL-8 nuclear factor-kappaB (NF-kappaB) DNA-binding activity after histamine stimulation, and this was inhibited by DPH and MK-886. Cytoplasmic phospholipase A2 mRNA levels were also potently induced by histamine. Thus histamine stimulation of bronchial epithelial cells involves binding at H1 receptors, production of LTB4, activation of NF-kappaB and increased expression of IL-8.
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Affiliation(s)
- Y Aoki
- Pulmonary and Critical Care Medicine, Stanford University Medical Center, Stanford, California 94305-5236, USA
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21
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Li CY, Gao JZ, Zhao GH, Kang JW, He HH. Determination of stability constants of Cu(II), Fe(III) and Pb(II) chelates with N,N,N′,N′-ethylenediamine tetrakis (methylenephosphonic acid) by reversed-phase ion-pair chromatography. Chromatographia 1997. [DOI: 10.1007/bf02496366] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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Zhao GH, Duez C, Lepage S, Forceille C, Rhazi N, Klein D, Ghuysen JM, Frère JM. Site-directed mutagenesis of the Actinomadura R39 DD-peptidase. Biochem J 1997; 327 ( Pt 2):377-81. [PMID: 9359404 PMCID: PMC1218804 DOI: 10.1042/bj3270377] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [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: 02/05/2023]
Abstract
The role of various residues in the conserved structural elements of the Actinomadura R39 penicillin-sensitive dd-peptidase has been studied by site-directed mutagenesis. Replacement of Ser-298 of the 'SDN loop' by Ala or Gly significantly decreased the kcat/Km value for the peptide substrate, but only by a factor of 15 and had little effect on the other catalytic properties. Mutations of Asn-300 of the same loop and of Lys-410 of the KTG triad yielded very unstable proteins. However, the N300S mutant could be purified as a fusion protein with thioredoxin that exhibited decreased rates of acylation by the peptide substrate and various cephalosporins. Similar fusion proteins obtained with the N300A, K410H and K410N mutants were unstable and their catalytic and penicillin-binding properties were very strongly affected. In transpeptidation reactions, the presence of the acceptor influenced the kcat/Km values, which suggested a catalytic pathway more complex than a simple partition of the acyl-enzyme between hydrolysis and aminolysis. These results are compared with those obtained with two other penicillin-sensitive enzymes, the Streptomyces R61 dd-peptidase and Escherichia coli penicillin-binding protein (PBP) 5.
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Affiliation(s)
- G H Zhao
- Centre d'Ingénierie des Protéines and Laboratoire d'Enzymologie, Université de Liège, Institut de Chimie, B6, B-4000 Sart Tilman (Liège), Belgium
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23
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Zhao GH, Frère JM. Reversible inhibition of enzymatic systems involving covalent intermediates. J Enzyme Inhib 1997; 11:245-64. [PMID: 9208368 DOI: 10.3109/14756369709027654] [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] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Reversible inhibition phenomena are analyzed for enzymatic systems involving covalent intermediates, where the inhibitor can bind to the pure enzyme, the Henri-Michaelis complex or the covalent intermediate, or to two or three of these enzyme forms. Classical competitive, non-competitive or un-competitive phenomena can be observed in some cases but unexpected features are also observed. Complex phenomena sometimes prevail where increased kcat/Km values can be accompanied by decreased or increased kcat values.
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Affiliation(s)
- G H Zhao
- Centre d'Ingénierie des Protéines and Laboratoire d'Enzymologie, Institut de Chimie, B6, Université de Liège au Sart Tilman, Belgium
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24
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Damblon C, Zhao GH, Jamin M, Ledent P, Dubus A, Vanhove M, Raquet X, Christiaens L, Frère JM. Breakdown of the stereospecificity of DD-peptidases and beta-lactamases with thiolester substrates. Biochem J 1995; 309 ( Pt 2):431-6. [PMID: 7626006 PMCID: PMC1135750 DOI: 10.1042/bj3090431] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [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
With peptide analogues of their natural substrates (the glycopeptide units of nascent peptidoglycan), the DD-peptidases exhibit a strict preference for D-Ala-D-Xaa C-termini. Gly is tolerated as the C-terminal residue, but with a significantly decreased activity. These enzymes were also known to hydrolyse various ester and thiolester analogues of their natural substrates. Some thiolesters with a C-terminal leaving group that exhibited L stereochemistry were significantly hydrolysed by some of the enzymes, particularly the Actinomadura R39 DD-peptidase, but the strict specificity for a D residue in the penultimate position was fully retained. These esters and thiolesters also behave as substrates for beta-lactamases. In this case, thiolesters exhibiting L stereochemistry in the ultimate position could also be hydrolysed, mainly by the class-C and class-D enzymes. However, more surprisingly, the class-C Enterobacter cloacae P99 beta-lactamase also hydrolysed thiolesters containing an L residue in the penultimate position, sometimes with a higher efficiency than the D isomer.
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Affiliation(s)
- C Damblon
- Laboratoire d'Enzymologie, Université de Liège, Institut de Chimie, Belgium
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Zhao GH. [Histopathological analysis of gastric polyps: classification and relationship to cancer]. Zhonghua Bing Li Xue Za Zhi 1993; 22:279-81. [PMID: 8168194] [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: 01/29/2023]
Abstract
34 cases of gastric polyps were investigated histopathologically. Based on Nakamura's classification, hyperplastic polyps were further classified into the following subtypes: the foveolar epithelial type, fundic glandular hyperplastic type and pyloric glandular hyperplastic type, each being described in detail. It was found that atypical hyperplastic foci usually appear in the foveolar epithelial subtype, indicating a close relationship to cancer. This finding suggests that the subclassification of hyperplastic gastric polyp has a higher practical value in clinical application. The article has also presented a histochemical and CEA immunohistochemical comparative study between hyperplastic polyps, adenoma and atypical hyperplasia of the stomach. The malignant transformation of gastric polyps is discussed and the definition of polyp reconsidered.
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Affiliation(s)
- G H Zhao
- Department of pathology, Sino-Japanese Friendship Hospital, Beijing
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Dang H, Zhao GH. [1-stage repair of congenital blepharostenosis]. Zhonghua Zheng Xing Shao Shang Wai Ke Za Zhi 1993; 9:353-4. [PMID: 8143206] [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: 01/29/2023]
Abstract
Nine cases of congenital blepharostenosis have been corrected by operation. The procedure included shortening of the ligaments of the inner canthus, correcting epicanthus, incision of the external canthus, and rectifying drooping of the upper lid in one stage. After operation, incision scar is not noticeable.
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Wilkin JM, Jamin M, Damblon C, Zhao GH, Joris B, Duez C, Frère JM. The mechanism of action of DD-peptidases: the role of tyrosine-159 in the Streptomyces R61 DD-peptidase. Biochem J 1993; 291 ( Pt 2):537-44. [PMID: 8484734 PMCID: PMC1132558 DOI: 10.1042/bj2910537] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Tyrosine-159 of the Streptomyces R61 penicillin-sensitive DD-peptidase was replaced by serine or phenylalanine. The second mutation yielded a very poorly active protein whose rate of penicillin binding was also drastically decreased, except for the reactions with nitrocefin and methicillin. The consequences of the first mutation were more surprising, since a large proportion of the thiolesterase activity was retained, together with the penicillin-binding capacity. Conversely, the peptidase properties was severely affected. In both cases, a drastic decrease in the transferase activity was observed. The results are compared with those obtained by mutation of the corresponding residue in the class A beta-lactamase of Streptomyces albus G.
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Affiliation(s)
- J M Wilkin
- Centre d'Ingéniérie des protéines, Université de Liège, Belgium
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Zhao GH. [Musculocutaneous flaps for repair of scar contracture of neck]. Zhonghua Wai Ke Za Zhi 1991; 29:519-20, 527. [PMID: 1813252] [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: 12/28/2022]
Abstract
Twenty-four cases of scar contracture of neck were repaired with musculocutaneous flaps. Latissimus dorsi musculocutaneous flap was used in 21 cases, latissimus dorsi-serratus anterior musculocutaneous flap in 2, and lower trapezius musculocutaneous flap in 1. All the flaps were alive with satisfactory functional results and shape. This simple method is also suitable for patients with scar contracture of armpit, anterior chest and lower lip.
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Affiliation(s)
- G H Zhao
- First Hospital of Shijiazhuang, Hebei
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Zhao GH. Modified five herb decoction in treating infantile acute nephritis. J TRADIT CHIN MED 1988; 8:216. [PMID: 3216668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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