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Zhang WS, Xu LB. A case of acute epigastric pain caused by gastric lymphangioma. Am J Med Sci 2024; 367:e25. [PMID: 37778720 DOI: 10.1016/j.amjms.2023.09.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 09/21/2023] [Accepted: 09/25/2023] [Indexed: 10/03/2023]
Affiliation(s)
- Wei-Sen Zhang
- Department of the Digestive Endoscopy, The Affiliated Hospital of Gui Zhou, Medical University, Gui Yang City, Gui Zhou, China
| | - Liang-Bi Xu
- Department of the Digestive Endoscopy, The Affiliated Hospital of Gui Zhou, Medical University, Gui Yang City, Gui Zhou, China.
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Jiang AR, Wen LM, Ding JW, Zou RZ, Nie XB, Lin H, Chen J, Zhang WS, Dan LY, Zhu YX, Ren CM, Wu YY, Sheng LL, Chen DR, Liao GB, Zhao HY, Li JJ, Zuo Y, Chen J, Bai JY, Xu LB, Yu S. Magnifying image-enhanced endoscopy-only mode boosted early cancer diagnostic efficiency: a multicenter randomized controlled trial. Gastrointest Endosc 2023; 98:934-943.e4. [PMID: 37400038 DOI: 10.1016/j.gie.2023.06.068] [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] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/30/2023] [Accepted: 06/27/2023] [Indexed: 07/05/2023]
Abstract
BACKGROUND AND AIMS Magnifying image-enhanced endoscopy (MIEE) is an advanced endoscopy with image enhancement and magnification used in preoperative examination. However, its impact on the detection rate is unknown. METHODS We conducted an open-label, randomized, parallel (1:1:1), controlled trial in 6 hospitals in China. Patients were recruited between February 14, 2022 and July 30, 2022. Eligible patients were aged ≥18 years and undergoing gastroscopy in outpatient departments. Participants were randomly assigned to the MIEE-only mode (o-MIEE) group, white-light endoscopy-only mode (o-WLE) group, and MIEE when necessary mode (n-MIEE) group (initial WLE followed by switching to another endoscope with MIEE if necessary). Biopsy sampling of suspicious lesions of the lesser curvature of the gastric antrum was performed. Primary and secondary aims were to compare detection rates and positive predictive value (PPV) of early cancer and precancerous lesions in these 3 modes, respectively. RESULTS A total of 5100 recruited patients were randomly assigned to the o-MIEE (n = 1700), o-WLE (n = 1700), and n-MIEE (n = 1700) groups. In the o-MIEE, o-WLE, and n-MIEE groups, 29 (1.51%; 95% confidence interval [CI], 1.05-2.16), 4 (.21%; 95% CI, .08-.54), and 8 (.43%; 95% CI, .22-.85) early cancers were found, respectively (P < .001). The PPV for early cancer was higher in the o-MIEE group compared with the o-WLE and n-MIEE groups (63.04%, 33.33%, and 38.1%, respectively; P = .062). The same trend was seen for precancerous lesions (36.67%, 10.00%, and 21.74%, respectively). CONCLUSIONS The o-MIEE mode resulted in a significant improvement in diagnosing early upper GI cancer and precancerous lesions; thus, it could be used for opportunistic screening. (Clinical trial registration number: ChiCTR2200064174.).
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Affiliation(s)
- Ai-Rui Jiang
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China; Department of Gastroenterology, The People's Hospital of Wansheng District, Chongqing, China
| | - Li-Ming Wen
- Department of Gastroenterology, Sichuan MianYang 404 Hospital, Sichuan, China
| | - Jian-Wei Ding
- Department of Gastroenterology, The People's Hospital of Tongliang District, Chongqing, China
| | - Rui-Zheng Zou
- Department of Gastroenterology, The People's Hospital of Chongqing LiangJiang New Area, Chongqing, China
| | - Xu-Biao Nie
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Hui Lin
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China; Department of Epidemiology, Army Medical University, Chongqing, China
| | - Jing Chen
- Department of Gastroenterology, Chongqing University Three Gorges Hospital, Chongqing, China
| | - Wei-Sen Zhang
- Department of Gastroenterology, The Affiliated Hospital of Guizhou Medical University, Guizhou, China
| | - Liang-Ying Dan
- Department of Gastroenterology, The People's Hospital of Tongliang District, Chongqing, China
| | - Yu-Xia Zhu
- Department of Gastroenterology, The People's Hospital of Chongqing LiangJiang New Area, Chongqing, China
| | - Chun-Mei Ren
- Department of Gastroenterology, Sichuan MianYang 404 Hospital, Sichuan, China
| | - Ying-Yang Wu
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Lin-Lin Sheng
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Ding-Rong Chen
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Guo-Bin Liao
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China; Department of Gastroenterology, The 901 Hospital of Chinese People's Liberation Army Joint Service Support Unit, Hefei, China
| | - Hai-Yan Zhao
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Jian-Jun Li
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Ying Zuo
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Jie Chen
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Jian-Ying Bai
- Department of Gastroenterology, the Second Affiliated Hospital, Army Medical University, Chongqing, China
| | - Liang-Bi Xu
- Department of Gastroenterology, The Affiliated Hospital of Guizhou Medical University, Guizhou, China
| | - Shuang Yu
- Department of Gastroenterology, Chongqing University Three Gorges Hospital, Chongqing, China
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Liu H, Ge Y, Xu LB, Ma GT, Ma XJ. [Brucella endocarditis: a case report]. Zhonghua Nei Ke Za Zhi 2023; 62:850-852. [PMID: 37394855 DOI: 10.3760/cma.j.cn112138-20220709-00502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 07/04/2023]
Affiliation(s)
- H Liu
- Department of Infectious Diseases, Peking Union Medical College Hospital,Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y Ge
- Department of Infectious Diseases, Peking Union Medical College Hospital,Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - L B Xu
- Department of Infectious Diseases, Peking Union Medical College Hospital,Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - G T Ma
- Department of Cardial Surgery, Peking Union Medical College Hospital,Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X J Ma
- Department of Infectious Diseases, Peking Union Medical College Hospital,Peking Union Medical College, Chinese Academy of Medical Sciences, Beijing 100730, China
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Ran JX, Xu LB, Chen WW, Yang HY, Weng Y, Peng YM. Is lymphatic invasion of microrectal neuroendocrine tumors an incidental event?: A case report. World J Clin Cases 2023; 11:859-865. [PMID: 36818613 PMCID: PMC9928715 DOI: 10.12998/wjcc.v11.i4.859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Revised: 01/02/2023] [Accepted: 01/16/2023] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND A rectal neuroendocrine tumor (rNET) is a malignant tumor originating from neuroendocrine cells. Currently, tumor size is the primary basis for assessing tumor risk.
CASE SUMMARY This article reports the case of a 46-year-old male patient who underwent a colonoscopy that found a 3 mm rectal polypoid bulge. The pathological examination of a sample collected with biopsy forceps revealed a neuroendocrine tumor. Further endoscopic submucosal dissection rescue therapy was used. The presence of lymphatic vessels indicated that the tumor had infiltrated the negative resection margin. The lesion was located in the distal rectum near the anal canal. Therefore, to ensure the patient’s quality of life, follow-up observation was conducted after full communication with the patient. No tumor recurrence or distant metastasis has been found during the 13-mo follow-up after surgery.
CONCLUSION Despite the presence of lymphatic invasion and extremely small diameter rNETs in our case, this phenomenon may not imply a higher risk of distant lymph node and organ metastasis.
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Affiliation(s)
- Jing-Xue Ran
- Clinical Medical School, Guizhou Medical University, Guiyang 550000, Guizhou Province, China
| | - Liang-Bi Xu
- Endoscopy Center, Affiliated Hospital of Guizhou Medical University, Guiyang 550000, Guizhou Province, China
| | - Wan-Wei Chen
- Endoscopy Center, Affiliated Hospital of Guizhou Medical University, Guiyang 550000, Guizhou Province, China
| | - Hao-Yi Yang
- Endoscopy Center, Affiliated Hospital of Guizhou Medical University, Guiyang 550000, Guizhou Province, China
| | - Yan Weng
- Clinical Medical School, Guizhou Medical University, Guiyang 550000, Guizhou Province, China
| | - Yong-Mei Peng
- Clinical Medical School, Guizhou Medical University, Guiyang 550000, Guizhou Province, China
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Li HP, Zhang WS, He L, Hu H, Ren MQ, Liu XM, Xu LB, Tuo BG. [Clinical and endoscopic characteristics of gastrointestinal mantle cell lymphoma]. Zhonghua Yi Xue Za Zhi 2022; 102:3673-3679. [PMID: 36509538 DOI: 10.3760/cma.j.cn112137-20220526-01166] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Objective: To study the clinical and endoscopic features of mantle cell lymphoma (MCL). Methods: The clinical data and endoscopic characteristics of 20 patients with gastrointestinal MCL treated in the Affiliated Hospital of Zunyi Medical University and the Digestive Endoscopy Center of Guizhou Medical University from January 2011 to January 2021 were collected, and the histological and immunohistochemical characteristics of the tumor were observed. Meanwhile, 44 cases of non-gastrointestinal MCL in the above two hospitals in the same period were also enrolled. The clinical and endoscopic differences between the two groups were compared. Results: Among the 20 patients with gastrointestinal MCL, the male to female ratio was 4∶1 (16/4), the average age was (60.3±9.7) years, and 11 patients (55.0%, 11/20) were over 60 years old. The main clinical manifestations of 20 patients at the onset of the disease were bloody stool or black stool in 9 cases (45.0%), abdominal pain in 8 cases (40.0%). Moreover, 5.0% (1/20) had B symptoms (fever, night sweat and weight loss). The most frequently involved site was colorectum (50.0%). Endoscopic findings showed mucosal polypoid lesions in 13 cases (65.0%, 13/20), involving multiple intestinal segments, with polyp diameter of 0.2-3.5 cm. Two cases (10%) were in stage Ⅲ and 18 cases (90%) were in stage Ⅳ according to Ann Arbor staging. Seven cases (35.0%, 7/20) had the involvement of the peritoneal and retroperitoneal lymph nodes, 9 cases (45.0%, 9/20) had the involvement of the superficial lymph nodes in 45.0% (9/20), and 4 cases (20%, 4/20) had other extranodal invasion. Splenomegaly accounted for 35.0% (7/20). CD20, Bcl-2 and CD5 were positive or strongly positive in all gastrointestinal MCL tumor cells in 20 cases. Cyclin D1 was positive or strongly positive, accounting for 90.0% (18/20). The sex-determining region of Y chromosome-related high-mobility-group box 11 (SOX11) was positive or strongly positive, accounting for 65.0% (13/20). The positive index of Ki-67 was 5%-80%. Twenty cases (100%, 20/20) were followed up. The median follow-up was 41.2 months (1-74 months). There was no significant difference in the 3-year overall survival rate between the gastrointestinal MCL patients (70.0%) and non-gastrointestinal MCL patients (72.7%) (χ2=0.051, P=0.822). Conclusions: Abdominal discomfort is the main symptom of gastrointestinal MCL, which often occurs in the colorectum and often presents with multiple polypoid lesions. There are relatively few cases with B symptoms and extranodal invasion, and the prognosis is not different from that of patients with non-gastrointestinal MCL.
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Affiliation(s)
- H P Li
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - W S Zhang
- Digestive Endoscopy Center, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - L He
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - H Hu
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - M Q Ren
- Department of Hematology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - X M Liu
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
| | - L B Xu
- Digestive Endoscopy Center, Affiliated Hospital of Guizhou Medical University, Guiyang 550004, China
| | - B G Tuo
- Department of Gastroenterology, Affiliated Hospital of Zunyi Medical University, Zunyi 563000, China
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Li DH, Liu XY, Huang C, Deng CN, Zhang JL, Xu XW, Xu LB. Pathological Analysis and Endoscopic Characteristics of Colorectal Laterally Spreading Tumors. Cancer Manag Res 2021; 13:1137-1144. [PMID: 33603459 PMCID: PMC7881785 DOI: 10.2147/cmar.s286039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 01/13/2021] [Indexed: 12/15/2022] Open
Abstract
Objective This study aims to analyze the endoscopic and pathological characteristics of colorectal laterally spreading tumors (LSTs) to assist malignant risk stratification to inform selection of the appropriate treatment strategy. Methods Patients with colorectal LST were selected as retrospective study objects. Characteristics, including endoscopic findings and the most common site of LSTs of different diameters and histological types, were analyzed. The risk factors for malignancy in colorectal LST were explored by multivariate logistic regression analysis. Results LSTs with diameters of ≥20 mm were found mainly in the rectum and mainly with granular-mixed (G-M) morphology (36% and 44.6%, respectively; p < 0.05), while LSTs with diameters of <20 mm were found mainly in the ascending colon and mainly with granular-homogenous (G-H) morphology (40.9% and 46.2%, respectively; p < 0.05). Adenoma was the main histological type in patients with tumors of all diameters. However, the cancerization rate of LSTs was 31% in patients with tumor diameter ≥20 mm, while there was no invasive cancer in patients with tumor diameter < 20 mm. In the low-grade dysphasia (adenoma) group, most of the lesions were located in the ascending colon and most had the morphology LST-G-H (35.8% and 39.2%, respectively; p < 0.05). In the cancerization group, most of the lesions were located in the rectum, with the morphology LST-G-M (51.6% and 67.2%, respectively; p < 0.05), and the diameter was larger than that of the adenoma group (33.84 ± 17.99 mm vs 21.68 ± 8.99 mm). Conclusion The rectum was the most common site for an LST with a diameter ≥20 mm and cancerization, of which the morphology was mainly LST-G-M (endoscopic submucosal dissection is the preferred treatment for this type of LST). LST malignancy was found to be correlated with lesion diameter, location, and morphological appearance.
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Affiliation(s)
- Da-Huan Li
- Department of the Digestive Endoscopy, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550000, People's Republic of China
| | - Xue-Ying Liu
- Department of the Digestive Endoscopy, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550000, People's Republic of China
| | - Chao Huang
- Department of the Emergency, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550000, People's Republic of China
| | - Chao-Nan Deng
- Department of the Pathology, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550000, People's Republic of China
| | - Jia-Lu Zhang
- Department of the Digestive Endoscopy, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550000, People's Republic of China
| | - Xiao-Wen Xu
- Department of the Digestive Endoscopy, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550000, People's Republic of China
| | - Liang-Bi Xu
- Department of the Digestive Endoscopy, The Affiliated Hospital of Guizhou Medical University, Guiyang, 550000, People's Republic of China
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Li DH, Liu XY, Xu LB. Duodenal giant stromal tumor combined with ectopic varicose hemorrhage: A case report. World J Clin Cases 2020; 8:6009-6015. [PMID: 33344599 PMCID: PMC7723731 DOI: 10.12998/wjcc.v8.i23.6009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Revised: 07/27/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Gastrointestinal stromal tumors (GISTs) are mesenchymal tissue tumors originating from Cajal cells, presenting diverse clinical manifestations due to the different sizes, locations, and growth patterns of the lesions. Duodenum is an uncommon site of GISTs, more with gastrointestinal obstruction and bleeding as the first symptoms. Ectopic duodenal varix, as a rare varix occurring outside the gastroesophageal region, is the main type of heterotopic varices and an unusual cause of gas-trointestinal hemorrhage. The etiology is mainly seen in liver cirrhosis, portal hypertension, vasculitis, portal vein embolism and obstruction caused by various factors. Reports of duodenal stromal tumor combined with ectopic variceal hemorrhage are rarely seen; however, when it occurs, the situation can sometimes be urgent and life-threatening, especially when traditional endoscopy and imaging fail to detect the lesion timely.
CASE SUMMARY We report a 52-year-old female patient who had no obvious inducement to develop black stool. Gastroscopy in a local hospital revealed that the duodenal horizontal ectopic varices were ruptured and bleeding. After metal clamping hemostasis, she still had gastrointestinal bleeding and was transferred to our hospital. Gastroscopy showed that active bleeding was still seen in the horizontal part of duodenum, and suspicious submucosal eminence was seen in the bleeding part. Abdominal computed tomography showed a huge stromal tumor of duodenum, specimens were pathologically confirmed after surgery. After a 3-mo follow-up, no gastrointestinal hemorrhage and complications occurred.
CONCLUSION Ectopic variceal hemorrhage is rare but sometimes fatal. It may be combined with stromal tumor, which can be diagnosed by multiple methods. Endoscopic and surgical treatment are effective.
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Affiliation(s)
- Da-Huan Li
- Center of Digestive Endoscopy, The Affiliated Hospital of Guizhou Medical University, Guiyang 550000, Guizhou Province, China
| | - Xue-Ying Liu
- Department of Gastroenterology, Guizhou Medical University, Guiyang 550000, Guizhou Province, China
| | - Liang-Bi Xu
- Center of Digestive Endoscopy, The Affiliated Hospital of Guizhou Medical University, Guiyang 550000, Guizhou Province, China
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Li DH, Liu XY, Xu LB. Duodenal giant stromal tumor combined with ectopic varicose hemorrhage: A case report. World J Clin Cases 2020. [DOI: 10.12998/wjcc.v8.i23.6005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023] Open
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Xu SF, Wang WW, Chen J, Liu T, Zhang XX, Xu LB, Zhao ZG, Yu SJ, Guo LX. [Analysis of gene mutation profile of adult soft tissue sarcomas using high-throughput sequencing technology]. Zhonghua Zhong Liu Za Zhi 2020; 42:741-745. [PMID: 32988156 DOI: 10.3760/cma.j.cn112152-20200425-00378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To understand the genetic variation of soft tissue sarcomas, and to provide a scientific evidence for the individualized treatment. Methods: The somatic mutation and germline mutation of 45 adult soft tissue sarcomas had been detected by high-throughput sequencing technology, the clinical data were also analyzed. Results: A total of 88 gene mutations were detected in 45 samples, including 78 single nucleotide variation (SNV), 13 insertion/deletion (Indel) and 19 copy number variation (CNV). The most common mutant genes are TP53, CDKN2A, MDM2, CDK4, NF1 and PTEN. Among them, the mutation rates of TP53-MDM2/MDM4-CDKN2A pathway, CDKN2A/CDK4/RB1 pathway, and RAS/NF1/PTEN/PI3K pathway were more frequent (32/88, 36%). In terms of immunotherapy biomarkers among 10 samples, the median value of tumor mutation burden was 2.02 muts/Mb (0-4.24 muts/Mb), and all were microsatellite stable. Conclusions: This study analyzes the genetic variation of soft tissue sarcoma, and determines the high-frequency gene mutations and pathways, which may be the potential drug targets. This finding can provide scientific evidences for the personalized treatment of soft tissue sarcoma.
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Affiliation(s)
- S F Xu
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - W W Wang
- Thorgene Co., Ltd., Beijing 100176, China
| | - J Chen
- BoAo BioTech Group Co., Ltd., Beijing 100176, China
| | - T Liu
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - X X Zhang
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - L B Xu
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - Z G Zhao
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - S J Yu
- Department of Orthopedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Science and Peking Union Medical College, Beijing 100021, China
| | - L X Guo
- BoAo BioTech Group Co., Ltd., Beijing 100176, China
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Chen WS, Huang YS, Xu LB, Shi MM, Chen XD, Ye GQ, Wu TT, Zhu GB. Effects of sarcopenia, hypoalbuminemia, and laparoscopic surgery on postoperative complications in elderly patients with colorectal cancer: A prospective study. Neoplasma 2020; 67:922-932. [PMID: 32386484 DOI: 10.4149/neo_2020_190908n882] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2019] [Accepted: 11/26/2019] [Indexed: 11/08/2022]
Abstract
With the increasing number of elderly patients, the risk of diseases such as colorectal cancer (CRC) has increased. The objective of this prospective study was to explore the effects of sarcopenia, hypoalbuminemia, and laparoscopic surgery on postoperative complications among elderly patients who recently underwent colorectal surgery. Patients aged over 65 years who underwent surgery for CRC at the First Affiliated Hospital of Wenzhou Medical University were considered for this study. The demographical and clinical characteristics of these patients, as well as postoperative complications, were prospectively analyzed. The patients were divided into two groups depending on the diagnosis of sarcopenia, and the clinical variables corresponding to the two groups were compared. Further, the risk factors associated with postoperative complications were evaluated using univariate analysis and multivariate logistic regression analysis. A total of 360 patients fulfilled the inclusion criteria. Incidences of postoperative complications in the sarcopenia and non-sarcopenia groups were at 38.3% and 27.3%, respectively. In addition, sarcopenia (p=0.029) and hypoalbuminemia (p=0.010) were identified as independent risk factors, while laparoscopic surgery (p=0.023) was identified as a protective factor for postoperative complications. However, laparoscopic surgery was a protective factor for postoperative complications in the colon group only (p=0.001). Sarcopenia and hypoalbuminemia are independent risk factors that influence the probability of developing complications following CRC surgery. Laparoscopic surgery is a protective factor for postoperative complications of CRC patients, particularly colon cancer patients.
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Affiliation(s)
- W S Chen
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Y S Huang
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - L B Xu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - M M Shi
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - X D Chen
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - G Q Ye
- Department of Gastrointestinal Surgery, The Second Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - T T Wu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Huzhou University, Huzhou, China
| | - G B Zhu
- Department of Gastrointestinal Surgery, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
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Xu LB, Hanigan MD, Lin XY, Li MM, Yan ZG, Hu ZY, Hou QL, Wang Y, Shi KR, Wang ZH. Effects of jugular infusions of isoleucine, leucine, methionine, threonine, and other amino acids on insulin and glucagon concentrations, mammalian target of rapamycin (mTOR) signaling, and lactational performance in goats. J Dairy Sci 2019; 102:9017-9027. [PMID: 31351725 DOI: 10.3168/jds.2018-16102] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Accepted: 05/22/2019] [Indexed: 01/12/2023]
Abstract
The supply and profile of absorbed AA may affect milk protein synthesis through hormonal changes and mammalian target of rapamycin (mTOR) signaling pathways; and Ile, Leu, Met, and Thr (ILMT) are the 4 AA that have been reported to have the greatest effect on mammary mTOR signaling. The extent to which ILMT and the other remaining AA (RAA) differ in their effects on milk protein synthesis needs to be systematically investigated. In this study, 5 lactating goats, averaging 120 ± 10 d in milk, fitted with jugular vein and carotid artery catheters, were fasted for 24 h, followed by intravenous infusions of a mixture containing AA and glucose for 8 h in a 5 × 5 Latin square design. The AA mixtures were formulated according to the profile of casein. The amounts of AA infused were calculated based on supplies of AA when metabolizable protein (MP) was at requirement (MR). Treatments were an infusate containing glucose without AA (NTAA); an infusate containing 3 × the MR of Ile, Leu, Met and Thr (3F0R); and infusates containing 3F0R plus 1, 2, or 3 × MR of RAA (3F1R, 3F2R, and 3F3R, respectively) according to amounts provided when fed to meet MP requirements for maintenance and lactation for each goat. Milk, arterial blood, and mammary tissue samples were collected immediately after halting the infusion. Relative to NTAA, supplementation of ILMT tended to increase milk protein production and plasma glucose concentrations, and increased milk and lactose production, but had no effects on production or content of milk fat. Graded supplementation of RAA tended to quadratically affect production of milk and lactose. Arterial glucose and glucagon concentrations decreased linearly, and plasma insulin concentrations decreased quadratically with increased RAA. Mammary p70-S6K1 phosphorylation was decreased by addition of ILMT compared with NTAA but increased linearly with increased RAA infusion. Furthermore, EIF4EBP1 gene expression was much lower for 3F-treated goats than for the NTAA treatment. Both MTOR and RPS6KB1 gene expressions were decreased quadratically with increased RAA supply. These results suggested that short-term milk protein yield tended to be increased by elevated ILMT availability, and this trend was not explained by variations in mammary mTOR signaling or pancreatic hormone secretions, whereas graded increase of RAA in combination with ILMT appeared to regulate the efficiency of conversion of glucose to lactose in a manner not involving milk protein production.
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Affiliation(s)
- L B Xu
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian 271018, P. R. China
| | - M D Hanigan
- Department of Dairy Science, Virginia Tech, Blacksburg 24061
| | - X Y Lin
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian 271018, P. R. China
| | - M M Li
- Department of Dairy Science, Virginia Tech, Blacksburg 24061
| | - Z G Yan
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian 271018, P. R. China
| | - Z Y Hu
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian 271018, P. R. China
| | - Q L Hou
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian 271018, P. R. China
| | - Y Wang
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian 271018, P. R. China
| | - K R Shi
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian 271018, P. R. China
| | - Z H Wang
- Ruminant Nutrition and Physiology Laboratory, College of Animal Science and Technology, Shandong Agricultural University, Taian 271018, P. R. China.
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Zhang WG, Xu LB, Xiang YN, Duan CH. Plexiform fibromyxoma of the small bowel: A case report. World J Clin Cases 2018; 6:1067-1072. [PMID: 30568965 PMCID: PMC6288503 DOI: 10.12998/wjcc.v6.i15.1067] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2018] [Revised: 11/05/2018] [Accepted: 11/07/2018] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Plexiform fibromyxoma is a rare, special type of mesenchymal tumor. The most common presenting symptoms are anemia, hematemesis, and hematochezia, without sex or age predilection. The reported cases have mainly occurred in the gastric antrum and pylorus region, with some cases in the duodenum.
CASE SUMMARY We report here a case of plexiform fibromyxoma in the upper segment of the jejunum, which was continuously followed up for 3 years after surgical removal. Plexiform fibromyxoma showed multinodular or plexiform growth. The cells in the tumor node were spindle-shaped but few in number and mitotic figures. Small blood vessels and mucous matrix were found among the tumor cells. Immunohistochemistry revealed that the plexiform fibromyxoma cells were positive for smooth muscle actin, focally positive for CD10, and negative for cytokeratin, CD117, DOG-1 (discovered on GIST-1) desmin, S-100, epithelial membrane antigen, and CD34. Ki-67 labeling index was < 5%. Plexiform fibromyxoma showed benign biological behavior. After 3 years of consecutive postoperative follow-up, no obvious signs of metastasis or recurrence were found by imaging examination.
CONCLUSION Plexiform fibromyxoma is a rare type of mesenchymal tumor. The diagnosis mainly depends on pathological examination, and it should be distinguished from other gastrointestinal mesenchymal tumors.
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Affiliation(s)
- Wei-Guang Zhang
- Department of Endoscopy, the Affiliated Hospital of Guizhou Medical University, Guiyang 550001, Guizhou Province, China
| | - Liang-Bi Xu
- Department of Endoscopy, the Affiliated Hospital of Guizhou Medical University, Guiyang 550001, Guizhou Province, China
| | - Yi-Ning Xiang
- Department of Pathology, the Affiliated Hospital of Guizhou Medical University, Guiyang 550001, Guizhou Province, China
| | - Chen-Hong Duan
- Department of Endoscopy, the Affiliated Hospital of Guizhou Medical University, Guiyang 550001, Guizhou Province, China
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Zhang XX, Xu LB, Xu SF, Zhao ZG, Liu T, Zhang SG, Yu SJ. [Analysis of clinicopathological characteristics and prognostic factors of foot and ankle soft tissue and bone tumors]. Zhonghua Zhong Liu Za Zhi 2018; 40:685-689. [PMID: 30293395 DOI: 10.3760/cma.j.issn.0253-3766.2018.09.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the clinicopathological characteristics of foot and ankle soft tissue and bone tumor, and to analyze the prognosis and the related factors of malignant tumors in this site. Methods: 74 patients with soft tissue and bone tumors of foot and ankle from January 2006 to February 2017 were retrospectively analyzed. The clinicopathological characteristics, the treatment and survival status of malignant tumors were followed up, and the clinical and therapeutic factors related to prognosis were analyzed. Results: Of the 74 patients, 34 were males and 40 were females. The male to female ratio was 1∶1.18; the age ranged from 12 to 64 years and the median age was 42 years. Tumors located in forefoot of 22 cases, 22 in midfoot, 10 in hind foot, 14 in ankle joint and 6 in multiple sites. 14 cases were bone tumors, including 7 benign and 7 malignant, and 60 cases were soft tissue tumors, including 14 benign and 46 malignant. The most common malignant soft tissue tumors were synovial sarcomas (13 cases), and the most common benign soft tissue tumors were hemangiomas (4 cases). 44 cases of malignant tumors underwent surgery were followed up, of which were 7 bone and 37 soft tissue malignant tumors. Limb salvage surgeries were performed in 33 cases and amputation in 11 cases. The median follow-up time was 69.8 months, and the median survival time was 40.7 months. The 1-year, 3-year and 5-year survival rate of soft tissue malignant tumors was 88.0%, 73.0%, and 63.0%, respectively. The 1-year, 3-year and 5-year survival rate of bone malignant tumors was 86.0%, 57.0% and 57.0%, respectively. Univariate analysis showed that the prognostic factors affecting 5-year survival rate were tumor size and adjuvant therapy (P<0.05). Patient's gender, age, tumor location, histological type and surgical procedure had no effect on overall survival(P>0.05). Multivariate analysis showed that tumor size was an independent prognostic factor (RR=7.262, P=0.005). Conclusions: Forefoot and midfoot are more common in foot and ankle soft tissue and bone tumors. Synovial sarcoma is the most common diagnosis in malignant soft tissue tumors, and hemangioma is the most common diagnosis in benign soft tissue tumors. The prognostic factor of malignant soft tissue and bone tumors in foot and ankle is tumor size. Patients with the tumor size of 5 cm or more have a worse prognosis.
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Affiliation(s)
- X X Zhang
- Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L B Xu
- Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S F Xu
- Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Z G Zhao
- Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - T Liu
- Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S G Zhang
- Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S J Yu
- Department of Orthopaedics, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Zhang XX, Fang Y, Xu LB, Xu SF, Zhao ZG, Sun C, Ma PQ, Liu T, Yu SJ, Zhang WJ. [The role of preoperative (18)F-FDG PET-CT in lymphatic metastasis diagnosis of cutaneous malignant melanoma on extremities and trunk]. Zhonghua Zhong Liu Za Zhi 2018; 40:372-378. [PMID: 29860765 DOI: 10.3760/cma.j.issn.0253-3766.2018.05.010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the clinical value of preoperative (18)F-Fludeoxyglucose ((18)F-FDG PET-CT) in lymphatic metastasis diagnosis of cutaneous melanoma on extremities and trunk. Methods: 112 patients with cutaneous melanoma pathologically of extremities and trunk from January 2006 to December 2016, who received (18)F-FDG PET-CT examination preoperatively, were retrospectively reviewed. The correlations between the maximal diameters of lymph nodes, the maximal standard uptake value (SUV) and the diagnostic impression grades of PET-CT examination, and the final pathological diagnosis were analyzed. The correlations between Breslow thickness of primary lesions and the diagnostic impression of PET-CT examination were also analyzed. All the above were analyzed with Receiver Operating Characteristic (ROC) curve to get the cut-off value. Based on the final results of pathological diagnosis of lymph nodes as the golden standard, the statistically significant indicators of ROC curve analysis were used to evaluate the diagnostic effect, as well as to calculate the sensitivity, specificity and accuracy. With gender, age, maximal diameter of lymph nodes, maximal SUV, diagnosis impressions, and Breslow thickness as the independent variables and pathological diagnosis results of lymph nodes as the dependent variable, two-class stepwise Logistic regression analysis was used to determine the independence of diagnostic indicators. ROC curve analysis and log rank test were used to analyze the relationship between Breslow thickness and patient survival. Results: To evaluate melanoma patients' lymph node status, the results of ROC curve analysis showed that the area under the curve of lymph node maximal diameter, maximal SUV, diagnosis impression of PET-CT examinations were 0.789, 0.786 and 0.816, respectively (all P<0.05). The cut-off values were 0.85 cm, 1.45 and 2.5, respectively. The sensitivity of the cut-off values to determine the status of lymph nodes in melanoma patients were 71.4%, 64.9% and 72.1% respectively, and the specificities were 85.2%, 88.7% and 87.0% respectively. Multivariate Logistic regression analysis showed that PET-CT diagnosis impressions had independent diagnostic significance for the lymph node status of melanoma patients (OR=11.296, 95%CI: 2.550~50.033). The area under the curve of Breslow thickness evaluating PET-CT diagnostic impression is 0.664 (P=0.042) and the cut-off value was 4.25 mm. The survival rate of the patients with Breslow thickness ≥ 4.25 mm was lower than that in the group <4.25 mm (P=0.006). Conclusions: (18)F-FDG PET-CT can help to evaluate metastases and make treatment decisions for cutaneous melanoma of extremities and trunk, especially for patients whose primary lesion's Breslow thickness has reached more than 4.25 mm. For the patients whose maximal SUV of regional lymph node is higher than 1.45 and short diameter of the largest lymph node is larger than 0.85cm, the possibility of metastases should be considered.
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Affiliation(s)
- X X Zhang
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Y Fang
- Center of PET-CT, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L B Xu
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S F Xu
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Z G Zhao
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - C Sun
- Department of Nuclear Medicine, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - P Q Ma
- Department of Pathology, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - T Liu
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S J Yu
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - W J Zhang
- Center of PET-CT, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Liao P, Hu SQ, Zhang H, Xu LB, Liu JZ, He B, Liao SG, Li YJ. Study on Anti-Proliferative Activity in Cancer Cells and Preliminary Structure-Activity Relationship of Pseudo-Peptide Chiral Thioureas. B KOREAN CHEM SOC 2018. [DOI: 10.1002/bkcs.11383] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Peng Liao
- School of Pharmacy, Guizhou Medical University; Engineering Research Center for the Development and Application of Ethnic Medicine and TCM; Ministry of Education; Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University; Guiyang 550004 Guizhou, China
| | - Shi-Qin Hu
- School of Pharmacy, Guizhou Medical University; Engineering Research Center for the Development and Application of Ethnic Medicine and TCM; Ministry of Education; Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University; Guiyang 550004 Guizhou, China
| | - Hong Zhang
- The Affiliated Hospital of Guizhou Medical University; Guiyang 550004 Guizhou, China
| | - Liang-Bi Xu
- The Affiliated Hospital of Guizhou Medical University; Guiyang 550004 Guizhou, China
| | - Jing-Zi Liu
- School of Pharmacy, Guizhou Medical University; Engineering Research Center for the Development and Application of Ethnic Medicine and TCM; Ministry of Education; Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University; Guiyang 550004 Guizhou, China
| | - Bin He
- School of Pharmacy, Guizhou Medical University; Engineering Research Center for the Development and Application of Ethnic Medicine and TCM; Ministry of Education; Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University; Guiyang 550004 Guizhou, China
| | - Shang-Gao Liao
- School of Pharmacy, Guizhou Medical University; Engineering Research Center for the Development and Application of Ethnic Medicine and TCM; Ministry of Education; Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University; Guiyang 550004 Guizhou, China
| | - Yong-Jun Li
- School of Pharmacy, Guizhou Medical University; Engineering Research Center for the Development and Application of Ethnic Medicine and TCM; Ministry of Education; Guizhou Provincial Key Laboratory of Pharmaceutics, Guizhou Medical University; Guiyang 550004 Guizhou, China
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16
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Yuan ZN, Xu LB, Zhao ZG, Xu SF, Zhang XX, Liu T, Zhang SG, Yu SJ. [Clinicopathological features and prognosis of malignant peripheral nerve sheath tumor: a retrospective study of 140 cases]. Zhonghua Zhong Liu Za Zhi 2017. [PMID: 28635234 DOI: 10.3760/cma.j.issn.0253-3766.2017.06.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the clinicopathological features and prognosis of malignant peripheral nerve sheath tumors (MPNST). Methods: We retrospectively reviewed the clinical data of MPNST patients who were treated at Cancer Institute & Hospital, Chinese Academy of Medical Science from January 1999 to January 2016. A total of 140 patients with 66 male and 74 female with MPNST were enrolled in the study. The median age was 40 at the time of diagnosis. Survival analysis were estimated by Kaplan-Meier method and Log rank test. Multivariate analysis were estimated by Cox proportional hazards regression model. Results: The median follow-up time was 43.0 months. The 3- and 5-year overall survival (OS) rates were 56.4% and 48.6%, respectively. The 3-year local recurrence (LR) rate and distant metastasis (DM) rates were 42.9% and 49.3%, respectively. Univariate analysis showed that the tumor location, AJCC stage, S-100, radiotherapy and margin status affected 5-year OS rate (all P<0.05). The tumor location, AJCC stage, S-100, Ki-67 staining, margin status, radiotherapy and chemotherapy affected 3-year LR rate (all P<0.05). The tumor location, AJCC stage, S-100, Ki-67 staining and margin status affected 3-year DM rate (all P<0.05). Multivariate analysis showed that the tumor location, AJCC stage, S-100 were independent factors for 5-year OS rate (all P<0.05). The tumor location, Ki-67 staining and chemotherapy were independent factors for LR (all P<0.05) while the AJCC stage, margin status and Ki-67 staining were independent factors for DM (all P<0.05). Conclusions: MPSNT is an aggressive tumor with poor prognosis. Multiple factors were identified in this study. Patients with the tumor located at head and neck, advanced AJCC stage and negative S-100 usually have a low 5-year overall survival rate. Patients with the tumor located at head and neck, Ki-67 staining ≥ 20% and without chemotherapy had a higher tendency of local recurrence. Poor prognosis factors for DM were advanced AJCC stage, positive margin and Ki-67 staining ≥ 20%.
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Affiliation(s)
- Z N Yuan
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - L B Xu
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - Z G Zhao
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S F Xu
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - X X Zhang
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - T Liu
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S G Zhang
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
| | - S J Yu
- Department of Orthopaedics, National Cancer Center/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100021, China
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Zhang R, Wu WR, Shi XD, Xu LB, Zhu MS, Zeng H, Liu C. Dysregulation of Bmi1 promotes malignant transformation of hepatic progenitor cells. Oncogenesis 2016; 5:e203. [PMID: 26926789 PMCID: PMC5154353 DOI: 10.1038/oncsis.2016.6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [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: 07/30/2015] [Revised: 11/26/2015] [Accepted: 12/13/2015] [Indexed: 12/14/2022] Open
Abstract
Adult hepatic progenitor cells (HPCs) are involved in a wide range of human liver diseases, including hepatocellular carcinoma (HCC). Bmi1 has been reported to have vital roles in stem cell self-renewal and carcinogenesis. We have previously demonstrated that Bmi1 is upregulated in HCC with bile duct tumor thrombi, a subtype of HCC characterized by profuse expression of hepatic stem cell markers. However, the function of Bmi1 in HPCs has not yet been well elucidated. The current study was designed to investigate the effects of Bmi1 on the biological properties of rat HPCs. To accomplish this, Bmi1 was silenced or enhanced in two HPC cell lines (WB-F344 and OC3) by, respectively, using either small interfering RNA against Bmi1 or a forced Bmi1 expression retroviral vector. The biological functions of Bmi1 in HPCs were investigated through cell proliferation assays, colony-formation assays, cell cycle analysis and invasion assays, as well as through xenograft-formation assays. In this study, genetic depletion of Bmi1 repressed cell proliferation, colony formation and invasion in both assessed HPC cell lines relative to controls. Conversely, forced expression of Bmi1 in two HPCs cell lines promoted cell proliferation, colony formation and invasion in vitro. Aldehyde dehydrogenase (ALDH) assay revealed a significant increase in the number of ALDH-positive cells following the forced expression of Bmi1 in HPCs. Most importantly, transplantation of forced Bmi1 expression HPCs into nude mice resulted in the formation of tumors with histological features of poorly differentiated HCC. Taken together, our findings indicate that forced expression of Bmi1 promotes the malignant transformation of HPCs, suggesting Bmi1 might be a potential molecular target for the treatment of HCC.
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Affiliation(s)
- R Zhang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hepato-Pancreato-Biliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - W R Wu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hepato-Pancreato-Biliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - X D Shi
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hepato-Pancreato-Biliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - L B Xu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hepato-Pancreato-Biliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - M S Zhu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hepato-Pancreato-Biliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - H Zeng
- Department of Pathology, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - C Liu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetics and Gene Regulation and Department of Hepato-Pancreato-Biliary Surgery, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
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Abstract
This study examined the mechanism of action of amiloride, a urokinase-type plasminogen activator receptor inhibitor, in lowering proteinuria. Podocytes were resuscitated to allow for their proliferation and were observed for morphological changes. In the in vitro experiment, control, lipopolysaccharide, and lipopolysaccharide + amiloride groups were established. The expression of urokinase-type plasminogen activator receptor (uPAR) in podocytes was detected with a flow cytometer and cell motility was detected with the transwell migration assay. In the in vivo test, the urine protein volume of the model was detected at 24 h using Coomassie brilliant blue staining and the morphological changes of the podocytes were detected with immunofluorescence. The protein expression rate of uPAR in the lipopolysaccharide group was significantly higher than those in the control and lipopolysaccharide + amiloride groups (P < 0.05). The viability of cells in the lipopolysaccharide group was significantly higher than those in the control and lipopolysaccharide + amiloride groups (P < 0.05). Compared with the urine protein level in the control group at 24 h, the level in the lipopolysaccharide group increased significantly (P < 0.05), whereas compared with the urine protein level in the lipopolysaccharide group, the level in the lipopolysaccharide + amiloride group decreased (P < 0.05). uPAR expression was significantly downregulated, and the fusion of the podocyte-specific skelemin synaptopodin on the glomerulus podocytes was significantly decreased in the lipopolysaccharide + amiloride group. These results suggest that amiloride is able to reduce cell motility and thus lower proteinuria by inhibiting the expression of uPAR in podocytes.
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Affiliation(s)
- L B Xu
- Department of Nephrology, Guangdong General Hospital of Southern Medical University, Guangzhou, China
| | - N Chi
- Department of Nephrology, Zhujiang Hospital of Southern Medical University, Guangzhou, China
| | - W Shi
- Department of Nephrology, Guangdong General Hospital of Southern Medical University, Guangzhou, China
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Xiang YN, Xu LB. Clinical, endoscopic and pathologic features of inflammatory fibroid polyps of the digestive system. Shijie Huaren Xiaohua Zazhi 2015; 23:1514-1520. [DOI: 10.11569/wcjd.v23.i9.1514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the clinical, endoscopic and pathologic features, as well as differential diagnosis of gastrointestinal inflammatory fibroid polys (IFPs).
METHODS: The clinical data for 16 cases of IFPs were analyzed. The findings of endoscopy, endoscopic ultrasound, and histopathology were reviewed. Immunohistochemistry studies for Vimentin, CD34, CD117, discovered on GIST-1 (DOG-1), smooth muscle actin (SMA), S-100, and Desmin and cytokeratin (CK) were performed.
RESULTS: IFPs were mainly found in adults aged 40-60 years (56.25%), slightly more frequently in women. IFPs occurred mainly in the stomach (56.25%), small bowel (25%), and colon (18.75%), with the antrum being the most common place. The tumor might present as a polyp, submucosal mass or neoplasm-like mass. Endoscopic ultrasound showed hypoechoic lesions in the third or the second sonographic layer of the gastric wall but without involving the fourth layer, and the margin was poorly circumscribed. Histopathology showed that the tumor was mainly located in the submucosa and could invade the mucosa, but not the muscle layer. Microscopically, the main tumor components were fibroblast-like spindle cells, vascular and polymorphic inflammatory cells, usually dominant by eosinophils. The specific pathologic findings included eosinophils and concentric fibroblast-like spindle cells with an 'onion-skin'-like appearance around vessels. Immunohistochemical staining of the spindle cells of IFPs showed 100% positivity for vimentin and 87.5% positivity for CD34. Treatments for IFPs included surgery and endoscopic submucosal dissection (ESD) or endoscopic mucosal resection (EMR).
CONCLUSION: There are similar patterns for patient age and tumor location in IFPs. Endoscopy and endoscopic ultrasound can provide specific findings. The histopathological and immunohistochemical characteristics are useful for accurately diagnosing IFPs and differential diagnosis of the tumors occurring in the submucosa.
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Abstract
AIM: To investigate the clinical manifestations, endoscopic and ultrasonographic features, and endoscopic therapy of gastric inflammatory fibroid polyps (IFPs).
METHODS: A total of 13 patients with IFPs treated at our center were collected between January 2007 January and April 2014. The clinical data for these patients were reviewed. All patients underwent digestive endoscopy, and 5 patients whose lesions were located at the antrum underwent endoscopic ultrasonography before therapy. Therapeutic methods were selected based on endoscopic morphology of the lesion.
RESULTS: IFPs had a modest female predominance (8 women and 5 men), with the majority of patients (11) being more than 50 years. Involved sites included the stomach (10), ileum (2), and colon (1). The tumors ranged in size from 6-60 mm (mean, 21.62 mm). Endoscopic features of the 13 lesions were submucosal tumors (7), polyps (3) and neoplasms (3). All lesions were located in the second (2) or third (3) sonographic layer of the antrum without involvement of the fourth layer. Endoscopic ultrasonographic features were hypoechoic/homogeneous echo pattern and unclear boundary. Four patients underwent endoscopic mucosal resection (EMR), 6 underwent endoscopic submucosal dissection (ESD) and 3 partial gastrointestinalresection. All were confirmed histologically as IFPs.
CONCLUSION: IFPs can occur throughout the gastrointestinal tract, commonly in the antrum. Understanding the characteristic digestive endoscopy and EUS features of IFP scan be helpful to IFP diagnosis. Treatmentby EMR or ESD iseffective and safe.
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Liang DH, Che ZP, Xu LB. Risk factors associated with failure of endoscopic therapy for acute non-variceal upper gastrointestinal bleeding. Shijie Huaren Xiaohua Zazhi 2014; 22:1547-1551. [DOI: 10.11569/wcjd.v22.i11.1547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To determine risk factors associated with failure of endoscopic therapy for acute non-variceal upper gastrointcstinal bleeding (ANVUGIB).
METHODS: This was a retrospective cohort study of 52 patients with acute ANVUGIB who were admitted to the Affiliated Hospital of Guiyang Medical College from January 2010 to October 2013. Based on the therapeutic effect after first endoscopic therapy, the patients were divided into either a success or a failure group. Data including age, sex, bleeding history, chronic disorder history, non-steroidal anti-inflammatory drug history, time from bleeding to endoscope examination, blood transfusion, shock index, hemoglobin, blood routine examination, liver and renal function examination, parameter of anticoagulative system, causes and type of bleeding, lesion size, Rockall and Blatchford grade were compared between the two groups to find the variables with a significant difference. Risk factors for treatment failure were identified using multivariable logistic regression.
RESULTS: Therapeutic failure rate was 23.7% (12/52). The two groups had significant differences in age, blood transfusion, BUN, CHE, ALB, and PT. Logistic regression analysis revealed that age (OR = 1.076, 95%CI: 1.009-1.147) and PT (OR = 1.684, 95%CI: 1.053-2.693) were independent risk factors.
CONCLUSION: ANVUGIB patients with old age or long PT have a higher risk of failure of endoscopic therapy and should be given interventional therapy or surgery when necessary.
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Duan LQ, Otvos IS, Xu LB, Conder N, Wang Y. Field testing Chinese and Japanese gypsy moth nucleopolyhedrovirus and disparvirus against a Chinese population of Lymantria dispar asiatica in Huhhot, Inner Mongolia, People's Republic of China. J Econ Entomol 2012; 105:344-353. [PMID: 22606802 DOI: 10.1603/ec11294] [Citation(s) in RCA: 5] [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] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The activity of three geographic isolates of the gypsy moth nucleopolyhedrovirus (LdMNPV) was evaluated in field trials against larvae of the Chinese population of Lymantria dispar asiatica Vnukovskij in Inner Mongolia, People's Republic of China, in 2004, 2005, and 2006. Although the Chinese isolate of the virus, LdMNPV-H, was the most pathogenic of the isolates tested, having the lowest mean lethal concentration causing 50% and 95% larval mortality, the increase in efficacy that would be obtained by incorporating this isolate into a commercial product does not justify the time or expense required to register it for use in the United States or Canada. The commercially available North American isolate, LdMNPV-D, was moderately pathogenic, whereas the Japanese isolate, LdMNPV-J, was the least pathogenic. The slopes of the dose-response regression lines for the three virus isolates indicated that the Chinese gypsy moth larvae were more homogenously susceptible to LdMNPV-H and LdMNPV-D than to LdMNPV-J. Time-response data showed that LdMNPV-J was significantly more virulent, but at a much higher dose, than the other two isolates, causing 50% mortality in the shortest time, followed by LdMNPV-H and LdMNPV-D. Rainfall immediately after the application of LdMNPV-D in 2005 resulted in significantly reduced gypsy moth larval mortality.
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Affiliation(s)
- L Q Duan
- Agricultural College, Inner Mongolia Agricultural University, 275 Xin Jian East Rd., Huhhot 010019, People's Republic of China
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Xu LB, Xiang YN, Che ZP, Tan QH. Complete removal of carcinoids by gastroenterological endoscopic biopsy: a report of two cases. Shijie Huaren Xiaohua Zazhi 2011; 19:2297-2300. [DOI: 10.11569/wcjd.v19.i21.2297] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The incidence of gastrointestinal carcinoids is low. Complete remove of minute tumors (≤5 mm) by gastrointestinal endoscopic biopsy is rare. Here we report two cases of carcinoids in the fundus and distal ileum which were completely removed by endoscopic biopsy. We also performed a literature review to summarize the endoscopic features, diagnosis and treatment of minute carcinoids.
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Xu LB, Huang YH, Li LJ, Che ZP. Effects of lidocaine in an experimental model of acute pancreatitis induced by contrast medium and pancreatic duct ligation. Shijie Huaren Xiaohua Zazhi 2007; 15:2210-2214. [DOI: 10.11569/wcjd.v15.i20.2210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To explore the effects of lidocaine in an experimental model of acute pancreatitis induced by contrast medium and pancreatic duct ligation, as well the rabbits' pancreatic sphincter pressure.
METHODS: Twenty-four rabbits were randomly divided into four groups, each containing six animals. The rabbit model of acute pancreatitis was set up by retrograde injection of 300 g/L Urografin in biliopancreatic duct and pancreatic duct obstruction. Before operation, lidocaine or distilled water was locally sprayed on the pancreatic duct distal sphincter in theⅠor Ⅱ group, respectively. Then the pancreatic sphincter pressure was determined and pancreas pathological changes were observed after 24 hours. The group Ⅲ rabbits only underwent manometry of pancreatic duct sphincter, and group Ⅳ underwent sham operation.
RESULTS: The histopathological score of pancreas in rabbits showed that sprayed with lidocaine before operation, the head of the pancreas exhibited very mild edema and inflammatory cell infiltration, and the amounts of edema, inflammatory cell infiltration, necrosis and hemorrhage were significantly decreased compared with those in rabbits sprayed with distilled water (edema, 0.83 ± 0.75 vs 2.83 ± 0.41; inflammatory cell infiltration, 1.33 ± 0.52 vs 3.00 ± 0.00; hemorrhage, 0.00 ± 0.00 vs 0.67 ± 0.52; necrosis, 0.17 ± 0.41 vs 1.50 ± 0.55; all P < 0.05); and the pancreatic sphincter pressure was significantly reduced in groupⅠcompared with that in groups Ⅱ and Ⅲ (19.98 ± 6.47 vs 34.77 ± 8.36, 32.67 ± 7.79; both P < 0.05).
CONCLUSION: Before operation, topical application of lidocaine significantly can reduce pancreatic sphincter pressure, and can also prevent pancreatitis induced by contrast medium and pancreatic duct ligation.
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Shi JJ, Ma XH, Diao HL, Ni H, Xu LB, Zhu H, Yang ZM. Differential expression of prostaglandin E receptor subtype EP2 in rat uterus during early pregnancy. Histol Histopathol 2006; 20:1021-8. [PMID: 16136483 DOI: 10.14670/hh-20.1021] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
PGE2 is essential for mammalian female reproduction. This study was to examine the expression of EP2 gene in the rat uterus during early pregnancy, delayed implantation and artificial decidualization by in situ hybridization and immunohistochemistry. There was no detectable EP2 mRNA expression in the uterus from days 1 to 4 of pregnancy (day 1 = day of vaginal sperm). A low level of EP2 immunostaining was observed in the luminal and glandular epithelium from days 1 to 4 of pregnancy. Both EP2 mRNA and protein expression were highly detected in the luminal epithelium at implantation sites on day 6 of pregnancy. EP2 expression decreased from day 7 of pregnancy and was undetectable on days 8 and 9 of pregnancy. After delayed implantation was terminated by estrogen treatment and the embryo implanted, both EP2 mRNA and protein expression were strongly observed in the luminal epithelium at the implantation site. There was no detectable EP2 expression in both control and decidualized uteri. In conclusion, these data suggest that EP2 expression at implantation site may play an important role during embryo implantation in rats.
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Affiliation(s)
- J J Shi
- College of Life Sciences, Northeast Agricultural University, Harbin, China
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Li GP, Tan JH, Sun QY, Meng QG, Yue KZ, Sun XS, Li ZY, Wang HB, Xu LB. Cloned piglets born after nuclear transplantation of embryonic blastomeres into porcine oocytes matured in vivo. ACTA ACUST UNITED AC 2005; 2:45-52. [PMID: 16218845 DOI: 10.1089/15204550050145120] [Citation(s) in RCA: 19] [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: 11/13/2022]
Abstract
Nuclear transplantation in the pig is more difficult than in other domestic animals and only one embryonic nuclear transplantation (NT) pig has been born to date. In this study, reconstituted porcine embryos were produced by electrofusion of blastomeres from in vivo four-cell embryos to enucleated in vivo or in vitro matured (IVM) oocytes. Nuclear transfer using cumulus cells as nuclear donors was also conducted. When blastomeres were used as donors, the electrofusion rate was significantly higher in oocytes matured in vivo (91.5%) than in those matured in vitro (66.1%) (p < 0.01). After fusion, the NT embryos reconstituted from in vivo matured oocytes developed to blastocysts at a rate of 10.3% after culture in rabbit oviducts for up to 5 days, while only 5.9% of the NT embryos reconstructed from in vitro matured oocytes developed to blastocyst stage. Electrofusion rate of cumulus cell nuclei with enucleated IVM oocytes was lower (47.6%) and only 1.5% (2/136) of the reconstituted eggs developed in vitro to morula stage, and 1.9% developed to blastocysts when cultured in the ligated rabbit oviducts. Transfer of 94 embryos reconstructed by blastomere NT with in vivo matured oocytes to five synchronous recipients resulted in the birth of two cloned piglets. No piglet was born following transfer to two recipients of embryos (n = 39) derived from NT with in vitro matured oocytes. The results demonstrate that in vivo matured oocytes are better recipients than those matured in vitro for pig cloning.
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Affiliation(s)
- G P Li
- Department of Biotechnology, Northeast Agriculture University, Harbin, China.
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Tan JH, Zhou Q, Xu LB, Zhang QM, Qin PC. Factors affecting electrofusion of 2-cell mouse embryos. Theriogenology 1994; 42:173-81. [PMID: 16727524 DOI: 10.1016/0093-691x(94)90674-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/1993] [Accepted: 05/02/1994] [Indexed: 11/17/2022]
Abstract
Parameters of electrofusion of 2-cell mouse embryos were optimized for application as a model for nuclear transplantation. There was considerable lysis of embryos with M(2) as the medium for fusion; however, 100% fusion (n = 58) was obtained with a single 0.31-kv / cm, 1280-musec pulse. With mannitol and sucrose solutions as the medium, a wide range of field strengths (0.31-1.41 kv / cm for 0.26 M sucrose solution and 0.31 to 2.04 kv / cm for 0.3 M mannitol solution) and durations of the electrical pulse (10-1280 musec) resulted in high rates of fusion (often 100%). Likewise, osmolarity of sucrose and mannitol solutions did not affect the rate of fusion using a 0.47-kv / cm pulse. With a field strength of 2.04 kv / cm, the proportion of embryos that fused in mannitol solution increased (P<0.05) and the proportion that were lysed decreased (P<0.05) as osmolarity increased. Both fused (162 642 , 25%) and control embryos (32 72 , 44%) continued to develop in culture for 48 h, after which they began to compact. Fused embryos were only at the 4-cell stage by this time, while control embryos were at the 8-cell stage. Optimal pulse durations are plotted for field strengths between 0.31 and 1.41 kv / cm with 0.26 M sucrose as fusion medium.
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Affiliation(s)
- J H Tan
- Department of Animal Science Northeast Agricultural University, Harbin, China 150030
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