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Peng Z, Ya L, Yichi Z, Dong L, Dechun Z. A systematic review and meta-analysis of minimally invasive versus conventional open proctectomy for locally advanced colon cancer. Medicine (Baltimore) 2024; 103:e37474. [PMID: 38489676 PMCID: PMC10939686 DOI: 10.1097/md.0000000000037474] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 12/12/2023] [Accepted: 02/12/2024] [Indexed: 03/17/2024] Open
Abstract
BACKGROUND Locally advanced colon cancer is considered a relative contraindication for minimally invasive proctectomy (MIP), and minimally invasive versus conventional open proctectomy (COP) for locally advanced colon cancer has not been studied. METHODS We have searched the Embase, Cochrane Library, PubMed, Medline, and Web of Science for articles on minimally invasive (robotic and laparoscopic) and COP. We calculated pooled standard mean difference (SMD), relative risk (RR), and 95% confidence intervals (CIs). The protocol for this review has been registered on PROSPERO (CRD42023407029). RESULTS There are 10132 participants including 21 articles. Compared with COP, patients who underwent MIP had less operation time (SMD 0.48; CI 0.32 to 0.65; I2 = 0%, P = .000), estimated blood loss (MD -1.23; CI -1.90 to -0.56; I2 = 95%, P < .0001), the median time to semi-liquid diet (SMD -0.43; CI -0.70 to -0.15; I2 = 0%, P = .002), time to the first flatus (SMD -0.97; CI -1.30 to -0.63; I2 = 7%, P < .0001), intraoperative blood transfusion (RR 0.33; CI 0.24 to 0.46; I2 = 0%, P < .0001) in perioperative outcomes. Compared with COP, patients who underwent MIP had fewer overall complications (RR 0.85; CI 0.73 to 0.98; I2 = 22.4%, P = .023), postoperative complications (RR 0.79; CI 0.69 to 0.90; I2 = 0%, P = .001), and urinary retention (RR 0.63; CI 0.44 to 0.90; I2 = 0%, P = .011) in perioperative outcomes. CONCLUSION This study comprehensively and systematically evaluated the difference between the safety and effectiveness of minimally invasive and open treatment of locally advanced colon cancer through meta-analysis. Minimally invasive proctectomy is better than COP in postoperative and perioperative outcomes. However, there is no difference in oncological outcomes. This also provides an evidence-based reference for clinical practice. Of course, multi-center RCT research is also needed to draw more scientific and rigorous conclusions in the future.
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Affiliation(s)
- Zhang Peng
- Department of Gastrointestinal Surgery, Pengzhou People’s Hospital, Pengzhou City, Chengdu, Sichuan, China
| | - Lu Ya
- Department of Respiratory Medicine, First Affiliated Hospital of Chengdu Medical College, Xindu District, Chengdu, Sichuan, China
| | - Zhang Yichi
- Department of Gastrointestinal Surgery, Pengzhou People’s Hospital, Pengzhou City, Chengdu, Sichuan, China
| | - Lin Dong
- Department of Urology, Pengzhou People’s Hospital, Pengzhou City, Chengdu, Sichuan, China
| | - Zhang Dechun
- Department of Gastrointestinal Surgery, Pengzhou People’s Hospital, Pengzhou City, Chengdu, Sichuan, China
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Yi Chi Z, Gang O, Xiao Li F, Ya L, Zhijun Z, Yong Gang D, Dan R, Xin L, Yang L, Peng Z, Yi L, Dong L, De Chun Z. Laparoscopic total mesorectal excision versus transanal total mesorectal excision for mid and low rectal cancer: A systematic review and meta-analysis. Medicine (Baltimore) 2024; 103:e36859. [PMID: 38277570 PMCID: PMC10817019 DOI: 10.1097/md.0000000000036859] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/12/2023] [Accepted: 12/14/2023] [Indexed: 01/28/2024] Open
Abstract
BACKGROUND Laparoscopic total mesorectal excision (LaTME) and transanal total mesorectal excision (TaTME) are popular mid and low rectal cancer trends. However, there is currently no systematic comparison between LaTME and TaTME of mid and low rectal cancer. Therefore, we systematically study the perioperative and pathological outcomes of LaTME and TaTME in mid and low rectal cancer. METHODS Articles included searching through the Embase, Cochrane Library, PubMed, Medline, and Web of science for articles on LaTME and TaTME. We calculated pooled standard mean difference (SMD), relative risk (RR), and 95% confidence intervals (CIs). The protocol for this review has been registered on PROSPERO (CRD42022380067). RESULTS There are 8761 participants included in 33 articles. Compared with TaTME, patients who underwent LaTME had no statistical difference in operation time (OP), estimated blood loss (EBL), postoperative hospital stay, over complications, intraoperative complications, postoperative complications, anastomotic stenosis, wound infection, circumferential resection margin, distal resection margin, major low anterior resection syndrom, lymph node yield, loop ileostomy, and diverting ileostomy. There are similarities between LaTME and TaTME for 2-year DFS rate, 2-year OS rate, distant metastasis rat, and local recurrence rate. However, patients who underwent LaTME had less anastomotic leak rates (RR 0.82; 95% CI: 0.70-0.97; I2 = 10.6%, P = .019) but TaTME had less end colostomy (RR 1.96; 95% CI: 1.19-3.23; I2 = 0%, P = .008). CONCLUSION This study comprehensively and systematically evaluated the differences in safety and effectiveness between LaTME and TaTME in the treatment of mid and low rectal cancer through meta-analysis. Patients who underwent LaTME had less anastomotic leak rate but TaTME had less end colostomy. There is no difference in other aspects. Of course, in the future, more scientific and rigorous conclusions need to be drawn from multi-center RCT research.
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Affiliation(s)
- Zhang Yi Chi
- Department of Gastrointestinal Surgery, Pengzhou People’s Hospital, Chengdu, China
| | - Ou Gang
- Department of Anesthesiology, The Fourth Clinical College of Chongqing Medical University, Chongqing, China
| | - Feng Xiao Li
- Department of Respiratory Medicine, First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Lu Ya
- Department of Respiratory Medicine, First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Zhou Zhijun
- Department of Urology, Pengzhou People’s Hospital, Chengdu, China
| | - Du Yong Gang
- Department of Gastrointestinal Surgery, Pengzhou People’s Hospital, Chengdu, China
| | - Ran Dan
- Internal Medicine-Cardiovascular Department, Pengzhou People’s Hospital, Chengdu, China
| | - Liu Xin
- Anesthesiology Department, Pidu District Maternal and Child Health Hospital, Chengdu, China
| | - Liu Yang
- Department of Urology, Pengzhou People’s Hospital, Chengdu, China
| | - Zhang Peng
- Department of Gastrointestinal Surgery, Pengzhou People’s Hospital, Chengdu, China
| | - Luo Yi
- Otolaryngology Head and Neck Surgery, Panzhihua Central Hospital, Panzhihua City, China
| | - Lin Dong
- Department of Urology, Pengzhou People’s Hospital, Chengdu, China
| | - Zhang De Chun
- Department of Gastrointestinal Surgery, Pengzhou People’s Hospital, Chengdu, China
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Gang DY, Dong L, DeChun Z, Yichi Z, Ya L. A systematic review and meta-analysis of minimally invasive total mesorectal excision versus transanal total mesorectal excision for mid and low rectal cancer. Front Oncol 2023; 13:1167200. [PMID: 37377919 PMCID: PMC10291686 DOI: 10.3389/fonc.2023.1167200] [Citation(s) in RCA: 1] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 05/10/2023] [Indexed: 06/29/2023] Open
Abstract
Background Minimally invasive total mesorectal excision (MiTME) and transanal total mesorectal excision (TaTME) are popular trends in mid and low rectal cancer. However, there is currently no systematic comparison between MiTME and TaTME of mid and low-rectal cancer. Therefore, we systematically study the perioperative and pathological outcomes of MiTME and TaTME in mid and low rectal cancer. Methods We have searched the Embase, Cochrane Library, PubMed, Medline, and Web of Science for articles on MiTME (robotic or laparoscopic total mesorectal excision) and TaTME (transanal total mesorectal excision). We calculated pooled standard mean difference (SMD), relative risk (RR), and 95% confidence intervals (CIs). The protocol for this review has been registered on PROSPERO (CRD42022374141). Results There are 11010 patients including 39 articles. Compared with TaTME, patients who underwent MiTME had no statistical difference in operation time (SMD -0.14; CI -0.31 to 0.33; I2=84.7%, P=0.116), estimated blood loss (SMD 0.05; CI -0.05 to 0.14; I2=48%, P=0.338), postoperative hospital stay (RR 0.08; CI -0.07 to 0.22; I2=0%, P=0.308), over complications (RR 0.98; CI 0.88 to 1.08; I2=25.4%, P=0.644), intraoperative complications (RR 0.94; CI 0.69 to 1.29; I2=31.1%, P=0.712), postoperative complications (RR 0.98; CI 0.87 to 1.11; I2=16.1%, P=0.789), anastomotic stenosis (RR 0.85; CI 0.73 to 0.98; I2=7.4%, P=0.564), wound infection (RR 1.08; CI 0.65 to 1.81; I2=1.9%, P=0.755), circumferential resection margin (RR 1.10; CI 0.91 to 1.34; I2=0%, P=0.322), distal resection margin (RR 1.49; CI 0.73 to 3.05; I2=0%, P=0.272), major low anterior resection syndrome (RR 0.93; CI 0.79 to 1.10; I2=0%, P=0.386), lymph node yield (SMD 0.06; CI -0.04 to 0.17; I2=39.6%, P=0.249), 2-year DFS rate (RR 0.99; CI 0.88 to 1.11; I2=0%, P = 0.816), 2-year OS rate (RR 1.00; CI 0.90 to 1.11; I2=0%, P = 0.969), distant metastasis rate (RR 0.47; CI 0.17 to 1.29; I2=0%, P = 0.143), and local recurrence rate (RR 1.49; CI 0.75 to 2.97; I2=0%, P = 0.250). However, patients who underwent MiTME had fewer anastomotic leak rates (SMD -0.38; CI -0.59 to -0.17; I2=19.0%, P<0.0001). Conclusion This study comprehensively and systematically evaluated the safety and efficacy of MiTME and TaTME in the treatment of mid to low-rectal cancer through meta-analysis. There is no difference between the two except for patients with MiTME who have a lower anastomotic leakage rate, which provides some evidence-based reference for clinical practice. Of course, in the future, more scientific and rigorous conclusions need to be drawn from multi-center RCT research. Systematic review registration https://www.crd.york.ac.uk/PROSPERO, identifier CRD42022374141.
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Affiliation(s)
- Du Yong Gang
- Department of Gastrointestinal Surgery, Pengzhou People's Hospital, Chengdu, Sichuan, China
| | - Lin Dong
- Department of Urology, Pengzhou People's Hospital, Chengdu, Sichuan, China
| | - Zhang DeChun
- Department of Gastrointestinal Surgery, Pengzhou People's Hospital, Chengdu, Sichuan, China
| | - Zhang Yichi
- Department of Gastrointestinal Surgery, Pengzhou People's Hospital, Chengdu, Sichuan, China
| | - Lu Ya
- Department of Respiratory Medicine, First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
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Dong L, Xiaoli F, Ya L, Dan W, Jingwen H, Xun L, Shujin C, Zhijun Z, Tian Z, Hao L, Chuanlang Y, Guangrong C, Xiaodong W, Gewen L, Yichi Z, Pei C, Yang L, Youliang W. Bayesian network analysis of long-term oncologic outcomes of open, laparoscopic, and robot-assisted radical cystectomy for bladder cancer. Medicine (Baltimore) 2022; 101:e30291. [PMID: 36042614 PMCID: PMC9410639 DOI: 10.1097/md.0000000000030291] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND To understand the long-term oncologic outcomes of open radical cystectomy (ORC) versus laparoscopic radical cystectomy (LRC) versus robot-assisted radical cystectomy (RARC) for bladder cancer (BCa). Therefore, we performed the conventional meta-analysis and network meta-analysis to evaluate the long-term oncologic outcomes of ORC, LRC, and RARC for BCa. METHODS A systematic search of PubMed, Embase, Cochrane Library, Medline, and Web of science was performed up until July 1, 2021. Long-term oncologic outcomes include the 5-year overall survival (OS) rate, the 5-year recurrence-free survival (RFS) rate, and the 5-year cancer specific-survival (CSS) rate. The Bayesian network analysis has been registered in PROSPERO (CRD42020208396). RESULTS We found that 10 articles (including 3228 patients) were included in our Bayesian network analysis. No significant differences were found between ORC, LRC, and RARC in long-term oncologic outcomes in either direct meta-analysis or network meta-analysis. Therefore, the clinical effects of 5-year OS, RFS, and CSS of RARC, LRC, and ORC are similar. But LRC may be ranked first in 5-year OS, RFS, and CSS compared to other surgical approaches by probabilistic analysis ranking via Bayesian network analysis. CONCLUSION We found that there were no statistical differences in the 3 surgical approaches of RAPC, LPC, and OPC for Bca in long-term oncologic outcomes by direct meta-analysis. However, Subtle differences between these surgical approaches can be concluded that LRC may be a better surgical approach than RARC or ORC in long-term oncologic outcomes by probabilistic analysis ranking via Bayesian network analysis. Moreover, we need a large sample size and more high-quality studies to improve and verify further.
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Affiliation(s)
- Lin Dong
- Department of Urology, Pengzhou People’s Hospital, Chengdu, Sichuan, China
| | - Feng Xiaoli
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
| | - Lu Ya
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
| | - Wu Dan
- Department of Urology, Pengzhou People’s Hospital, Chengdu, Sichuan, China
| | - Hu Jingwen
- ICU, Affiliated Hospital of Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, China
| | - Liu Xun
- Department of Urology, Affiliated Hospital of Chengdu University, Chengdu, Sichuan, China
| | - Chen Shujin
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
| | - Zhou Zhijun
- Department of Urology, Pengzhou People’s Hospital, Chengdu, Sichuan, China
| | - Zhang Tian
- Department of Urology, Pengzhou People’s Hospital, Chengdu, Sichuan, China
| | - Luo Hao
- Department of Urology, Pengzhou People’s Hospital, Chengdu, Sichuan, China
| | - Yi Chuanlang
- Department of Urology, Pengzhou People’s Hospital, Chengdu, Sichuan, China
| | - Chen Guangrong
- Department of Anesthesiology (Operating Room), Pengzhou People’s Hospital, Chengdu, Sichuan, China
| | - Wang Xiaodong
- Department of Orthopedics, Affiliated Hospital of Chengdu University, Chengdu, Sichuan, China
| | - Luo Gewen
- Department of Respiratory and Critical Care Medicine, The First Affiliated Hospital of Chengdu Medical College, Chengdu, Sichuan, China
| | - Zhang Yichi
- Department of Gastrointestinal Surgery, Pengzhou People’s Hospital, Chengdu, Sichuan, China
| | - Cao Pei
- Department of Urology, Pengzhou People’s Hospital, Chengdu, Sichuan, China
| | - Liu Yang
- Department of Urology, Pengzhou People’s Hospital, Chengdu, Sichuan, China
| | - Wang Youliang
- Department of Laboratory, Pengzhou People’s Hospital, Chengdu, Sichuan, China
- *Correspondence: Wang Youliang, Department of Laboratory, Pengzhou People’s Hospital, Chengdu, Sichuan 611930, China (e-mail: )
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Dong L, Liang WY, Ya L, Yang L, Qiang W. A Systematic Review and Meta-Analysis of Minimally Invasive Partial Nephrectomy Versus Focal Therapy for Small Renal Masses. Front Oncol 2022; 12:732714. [PMID: 35692758 PMCID: PMC9178090 DOI: 10.3389/fonc.2022.732714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 04/15/2022] [Indexed: 12/24/2022] Open
Abstract
BackgroundMinimally invasive partial nephrectomy (MIPN) and focal therapy (FT) are popular trends for small renal masses (SRMs). However, there is currently no systematic comparison between MIPN and FT of SRMs. Therefore, we systematically study the perioperative, renal functional, and oncologic outcomes of MIPN and FT in SRMs.MethodsWe have searched the Embase, Cochrane Library, and PubMed for articles between MIPN (robot-assisted partial nephrectomy and laparoscopic partial nephrectomy) and FT {radiofrequency ablation (RFA), microwave ablation (MWA), cryoablation (CA), irreversible electroporation, non-thermal [irreversible electroporation (IRE)] ablation, and stereotactic body radiation therapy (SBRT)}. We calculated pooled mean difference (MD), odds ratios (ORs), and 95% confidence intervals (CIs) (CRD42021260787).ResultsA total of 26 articles (n = 4,420) were included in the study. Compared with MIPN, the operating time (OP) of FT had significantly lower (SMD, −1.20; CI, −1.77 to −0.63; I2 = 97.6%, P < 0.0001), estimated blood loss (EBL) of FT had significantly less (SMD, −1.20; CI, −1.77 to −0.63; I2 = 97.6%, P < 0.0001), length of stay (LOS) had shorter (SMD, −0.90; CI, −1.26 to −0.53; I2 = 92.2%, P < 0.0001), and estimated glomerular filtration rate (eGFR) of FT was significantly lower decrease (SMD, −0.90; CI, −1.26 to −0.53; I2 = 92.2%, P < 0.0001). However, FT possessed lower risk in minor complications (Clavien 1–2) (OR, 0.69; CI, 0.45 to 1.07; I2 = 47%, P = 0.023) and overall complications (OR, 0.71; CI, 0.51 to 0.99; I2 = 49.2%, P = 0.008). Finally, there are no obvious difference between FT and MIPN in local recurrence, distant metastasis, and major complications (P > 0.05).ConclusionFT has more advantages in protecting kidney function, reducing bleeding, shortening operating time, and shortening the length of stay. There is no difference in local recurrence, distant metastasis, and major complications. For the minimally invasive era, we need to weigh the advantages and disadvantages of all aspects to make comprehensive choices.Systematic Review Registrationhttps://www.crd.york.ac.uk/PROSPERO/#recordDetails, identifier PROSPERO (CRD42021260787).
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Affiliation(s)
- Lin Dong
- Department of Urology, Pengzhou People’s Hospital, Chengdu, China
| | - Wang You Liang
- Department of Laboratory, Pengzhou People’s Hospital, Chengdu, China
| | - Lu Ya
- Department of Respiratory and Critical Care Medicine, First Affiliated Hospital of Chengdu Medical College, Chengdu, China
| | - Liu Yang
- Department of Urology, Pengzhou People’s Hospital, Chengdu, China
- *Correspondence: Liu Yang,
| | - Wei Qiang
- Department of Urology, West China Fourth Hospital of Sichuan University, Chengdu, China
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Dong L, Qin Y, Ya L, Liang C, Tinghui H, Pinlin H, Jin Y, Youliang W, Shu C, Tao W. Bayesian network analysis of open, laparoscopic, and robot-assisted radical cystectomy for bladder cancer. Medicine (Baltimore) 2020; 99:e23645. [PMID: 33350743 PMCID: PMC7769378 DOI: 10.1097/md.0000000000023645] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Accepted: 11/11/2020] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND We have performed the direct and network meta-analysis to evaluate the safety and efficacy of robot-assisted (RARC) versus laparoscopic (LRC) versus open radical cystectomy (ORC) for bladder cancer (BCa). METHODS A systematic search of PubMed, Cochrane Library, and Embase was performed up until Dec 20, 2019. Outcome indexes include oncologic outcomes (the recurrence rate, mortality), pathologic outcomes (lymph node yield (LNY), positive lymph node (PLN), positive surgical margins (PSM)), perioperative outcomes (operating time (OP), estimated blood loss (EBL), blood transfusion rate, the length of hospital stay (LOS) and the time to regular diet) and postoperative 90-day complications. RESULTS We have analyzed 6 RCTs, 23 prospective studies, and 25 retrospective studies (54 articles: 6382 patients). On one hand, the direct meta-analysis shows RARC is better than LRC or ORC. On the other hand, the clinical effects of the recurrence rate, Morbidity, PSM, LNY, PLN, and postoperative 90-day complications of RARC, LRC and ORC are all no statistical significance by network meta-analysis. Moreover, the probability rank shows that the comprehensive rank of RARC is better than LRC or ORC. The clinical effects of OP, EBL, LOS, blood transfusion rate and the time to regular diet are all statistical significance by network meta-analysis. There are ORC > LRC > RARC in the EBL ranking. Patients with RARC exhibited a decrease of LOS compared to those with LRC or ORC. Patients with RARC exhibited a decrease in blood transfusion rate and the time to regular diet compared to those with ORC. Patients with ORC exhibited an increase of OP compared to those with RARC or LRC. The heterogeneity tests of most studies are < 50%. Most studies have no publication bias and the quality of the selected studies is good. CONCLUSION The direct meta-analysis and network meta-analysis suggest that RARC is better than LRC or ORC according to comprehensive analysis. However, we need a large sample size and more high-quality studies to verify and improve in the further.
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Affiliation(s)
- Lin Dong
- Department of Urology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan
| | - Yu Qin
- Department of Orthopaedics, West China Hospital, Sichuan University, Chengdu
| | - Lu Ya
- Department of Respiratory, Affiliated Hospital of Chengdu Medical College
| | - Cao Liang
- Department of Urology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan
| | - Hu Tinghui
- Department of Urology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan
| | - He Pinlin
- Department of Urology, Affiliated Hospital of Chengdu University
| | - Yang Jin
- Department of Urology, Affiliated Hospital of Chengdu University
| | - Wang Youliang
- Department of Laboratory, Pengzhou People's Hospital, Chengdu, Sichuan, China
| | - Cui Shu
- Department of Urology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan
| | - Wu Tao
- Department of Urology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan
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Guitang Y, Ya L, Wang Z, Yanchun L, Yi S, Rong L, Guoqing X, Yaling H. ASSA14-02-10 Clinical research of ch-BNP in treatment of patients with acute left heart failure. Heart 2015. [DOI: 10.1136/heartjnl-2014-307109.16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Mei-Ling Z, Yun-Hai Z, Yong T, Ya L, Hong-Guo C, Yun-Sheng L, Oto H, Josef K, Xiao-Rong Z. 16 EFFECT OF DONOR CELL AND TRICHOSTATIN A ON DEVELOPMENT OF CLONED DAIRY CATTLE EMBRYOS. Reprod Fertil Dev 2012. [DOI: 10.1071/rdv24n1ab16] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The objective of present study was to investigate the effects of treatments to donor cells with fresh digestion (FD), cryopreservation/thawing (CT), trichostatin A (TSA) and durations of culture using TSA-CR1aa medium on in vitro development of dairy cow cloned embryos. In addition, some somatic cell cloned embryos were transferred to surrogates in heat to evaluate the in vivo developmental competence. The results (Table 1) showed that pretreatment of donor cells using TSA could significantly increase both cleavage and blastocyst rates of embryos (P < 0.05) compared with FD and CT group, whereas no significant difference was found between FD and CT group. When cloned embryos were subjected to TSA treatment in CR1aa for different times (0, 24, 48 and 60 h), the results showed that the blastocyst rate in the 60-h group was the highest (36.11 ± 1.78%) compared with the other groups (P < 0.05). Whereas the reconstructed embryos derived from donor cells treated with TSA for 24 h were continually cultured in TSA for different times (24, 48 and 60 h), the results showed that the blastocyst rate (37.39 ± 1.78%) in the 60-h group was significantly higher than that of the 24-h (25.48 ± 1.34%) group (P < 0.05). Finally, when the cloned embryos from different groups were respectively transferred to 40 natural oestrus recipients, no significant difference in terms of pregnancy rate among groups was found; however, a viable cloned calf was successfully obtained from TSA-treated donor cells and cloned embryo. Therefore, cloned embryos treated with optimized methods can develop to term.
Table 1.Pregnancy results established from embryos of different origins
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