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Katsanevakis E, Addo-Yobo W, Bharathan B, Loona A, Gan C, Nunns D, Gajjar K. Is routine gastrointestinal endoscopy required in every woman with mucinous ovarian cancer? An analysis of survival rates and metastatic tumours in a cancer centre. Eur J Obstet Gynecol Reprod Biol 2024; 294:105-110. [PMID: 38237307 DOI: 10.1016/j.ejogrb.2024.01.012] [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] [Subscribe] [Scholar Register] [Received: 08/02/2023] [Revised: 12/29/2023] [Accepted: 01/10/2024] [Indexed: 02/21/2024]
Abstract
INTRODUCTION Mucinous ovarian cancer (MOC) represents a rare entity of ovarian malignant neoplasms. The true incidence could be as low as 3% of all ovarian cancers. The aim of this study is to compare and understand the clinicopathological characteristics of patients with mucinous ovarian cancer, report on the survival rates and evaluate the role of gastrointestinal (GI) endoscopy as part of the peri-operative investigations and the impact it has on the survival rates. METHODOLOGY This is a retrospective data collection on patients with MOC operated in Nottingham gynaecological oncology centre over a 10-year period. Data were analysed using SPSS software. RESULTS 43 cases were included in the final analysis. The median maximal tumour diameter was 180 mm. 32 (74.5 %) and 11 (25.5 %) women presented with unilateral and bilateral tumours respectively. 30 patients (69.7 %) presented with stage 1 disease, 1 (2.3 %) presented with stage 2 disease, 7 women (16.4 %) had stage 3 disease and 1 woman (11.6 %) had stage 4 disease. 41 women had staging surgical procedures and 2 women had limited surgery due to poor performance status. After final histology, 5 cases found to have metastatic disease to the ovary rather than primary MOC. 14 women had GI endoscopy as part of their investigation. The total estimated cost of the endoscopies that have been performed is £5635. Primary GI cancer was diagnosed in 1 case during the endoscopy (1 case of gastric cancer). The 5-year overall survival of the women included in this study is 62.8 %. The 5-year overall survival of the women in the endoscopy and non-endoscopy groups was 60 % and 64.3 % respectively (p-value: 0.767). CONCLUSION The findings of this study show that the survival rates of patients treated for mucinous ovarian cancer in our centre are similar to other published studies. Our findings do not support the routine use of GI endoscopy in the peri-operative investigations of every patient with MOC due to the non-statistically significant difference in the overall survival.
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Affiliation(s)
- E Katsanevakis
- Department of Gynaecological Oncology, Nottingham University Hospitals NHS Trust, Nottingham, UK.
| | - W Addo-Yobo
- Department of Gynaecological Oncology, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - B Bharathan
- Department of Colorectal Surgery, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - A Loona
- Department of Pathology, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - C Gan
- Department of Gynaecological Oncology, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - D Nunns
- Department of Gynaecological Oncology, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - K Gajjar
- Department of Gynaecological Oncology, Nottingham University Hospitals NHS Trust, Nottingham, UK
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Bernhardt I, Van Dorp L, Dixon M, McSweeney M, Gan C, Baruteau J, Chakrapani A. Pyruvate carboxylase deficiency type C; variable presentation and beneficial effect of triheptanoin. JIMD Rep 2024; 65:10-16. [PMID: 38186850 PMCID: PMC10764197 DOI: 10.1002/jmd2.12405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/21/2023] [Revised: 12/01/2023] [Accepted: 12/05/2023] [Indexed: 01/09/2024] Open
Abstract
Pyruvate carboxylase is a mitochondrial enzyme essential for the tricarboxylic acid cycle (TCA), gluconeogenesis and fatty-acid synthesis. Pyruvate carboxylase deficiency (PCD) mostly presents with life-limiting encephalopathy (types A/B). A milder type C presentation is rare, with a comparatively favourable prognosis. Therapies remain essentially supportive. Triheptanoin is an odd-chain triglyceride, with the potential to replenish TCA intermediates (anaplerosis), and its metabolites cross the blood-brain-barrier. Outcomes of triheptanoin treatment in PCD types A/B have been disappointing, but have not been reported in type C. Here, we present two new patients with PCD type C, and report the response to treatment with triheptanoin in one. Patient 1 (P1) presented with neonatal-onset lactic acidosis and recurrent symptomatic lactic acidosis following exercise and during illnesses, with frequent hospitalisations. Speech development was delayed. MRI-brain showed delayed cerebral myelination. Patient 2 (P2) presented with episodic ketoacidosis, hyperlactataemia and hypoglycaemia at 2 years of age, with gross motor delay and mild global volume loss on MRI brain. Treatment with triheptanoin was commenced in P1 at 3 years of age with up-titration to 35 mL/day (25% of daily energy intake) over 6 months, due to transient diarrhoea. Dietary long-chain triglycerides were restricted, with fat-soluble vitamin supplementation. Subsequently, hospitalisations during intercurrent illnesses decreased, post-exertional hyperlactataemia resolved and exercise tolerance improved. Continued developmental progress was observed, and repeat MRI 18 months after initiation showed improved myelination. Triheptanoin was well-tolerated and appeared efficacious during 2 years' follow-up, and has potential to restore energy homeostasis and myelin synthesis in PCD type C.
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Affiliation(s)
- I. Bernhardt
- Department of Paediatric Metabolic MedicineGreat Ormond Street Hospital for ChildrenLondonUK
| | - L. Van Dorp
- Dietetics DepartmentGreat Ormond Street Hospital for ChildrenLondonUK
| | - M. Dixon
- Dietetics DepartmentGreat Ormond Street Hospital for ChildrenLondonUK
| | - M. McSweeney
- Department of Paediatric Metabolic MedicineGreat Ormond Street Hospital for ChildrenLondonUK
| | - C. Gan
- Department of Paediatric Metabolic MedicineGreat Ormond Street Hospital for ChildrenLondonUK
| | - J. Baruteau
- Department of Paediatric Metabolic MedicineGreat Ormond Street Hospital for ChildrenLondonUK
- Great Ormond Street Institute of Child Health, University College LondonLondonUK
| | - A. Chakrapani
- Department of Paediatric Metabolic MedicineGreat Ormond Street Hospital for ChildrenLondonUK
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Zhou H, Zhang Y, Gan C, Fan X, Qi Z, Qi S. [Eriocitrin suppresses proliferation and migration of hepatocellular carcinoma SMMC-7721 cells by promoting ROS production and activating the MAPK pathway]. Nan Fang Yi Ke Da Xue Xue Bao 2023; 43:412-419. [PMID: 37087586 PMCID: PMC10122744 DOI: 10.12122/j.issn.1673-4254.2023.03.11] [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: 04/24/2023]
Abstract
OBJECTIVE To investigate the role of the ROS/MAPK signaling axis in mediating the inhibitory effect of eriocitrin on proliferation and migration of hepatocellular carcinoma SMMC-7721 cells. METHODS SMMC-7721 cells were treated with different concentrations of eriocitrin for 24 h, and the changes in cell viability were detected with CCK-8 assay. The migration and invasion abilities of the treated cells were evaluated using Transwell and scratch healing assays, the cell proliferation was assessed with colony-forming assay, and changes in nuclear morphology were observed with DAPI staining. Western blotting was performed to examine the changes in the expressions of E-cadherin, N-cadherin, MMP-2, MMP-9, PARP, Pro-caspase 3, pJNK, p-P38, and p-ERK. The effect of eriocitrin on PARP cleavage in SMMC-7721 cells pretreated with ERK, JNK and P38 inhibitors (U0126, SB203580 and SP600125, respectively) was detected using Western blotting. The effect of treatment with Nacetyl-cysteine (NAC, 30 μmol/L) and eriocitrin (100, 200, and 300 μg/mL), alone or in combination, on reactive oxygen species (ROS) levels in the cells was examined using a DCFH-DA fluorescent probe. RESULTS Eriocitrin below 50 μg/mL did not produce significant effect on the viability of SMMC-7721 cells (P>0.05). Treatment with eriocitrin significantly inhibited scratch healing, migration, and colony formation of the cells (P < 0.01), reduced the protein expressions of N-cadherin, MMP-2, and MMP-9 (P < 0.01), and up-regulated E-cadherin protein expression (P < 0.05). Eriocitrin-treated SMMC-7721 cells showed obvious apoptotic morphologies with decreased Procaspase 3 expression and increased PARP cleavage (P < 0.01) and phosphorylation levels of JNK, P38, and ERK (P < 0.01); Eriocitrin-induced PAPR cleavage was obviously enhanced by U0126 and SB203580 but attenuated by SP600125. Treatment with 300 μg/mL eriocitrin for 30 min significantly increased ROS level in the cells, and this effect was obviously suppressed by NAC. CONCLUSION Eriocitrin can suppress the proliferation and migration and promote apoptosis of hepatocellular carcinoma SMMC-7721 cells by promoting ROS production and activating the MAPKs signaling pathway.
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Affiliation(s)
- H Zhou
- Key Laboratory of Biologically Active Biomacromolecules, Wannan Medical College, Wuhu 241002, China
| | - Y Zhang
- Key Laboratory of Biologically Active Biomacromolecules, Wannan Medical College, Wuhu 241002, China
| | - C Gan
- Key Laboratory of Biologically Active Biomacromolecules, Wannan Medical College, Wuhu 241002, China
| | - X Fan
- Key Laboratory of Biologically Active Biomacromolecules, Wannan Medical College, Wuhu 241002, China
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu 241002, China
| | - Z Qi
- Key Laboratory of Biologically Active Biomacromolecules, Wannan Medical College, Wuhu 241002, China
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu 241002, China
| | - S Qi
- Key Laboratory of Biologically Active Biomacromolecules, Wannan Medical College, Wuhu 241002, China
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu 241002, China
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Gan C, Attwell-Heap A, Clarke A. Left distal ureter leiomyosarcoma: a case report. J Surg Case Rep 2022; 2022:rjac501. [PMID: 36381984 PMCID: PMC9649425 DOI: 10.1093/jscr/rjac501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Accepted: 10/07/2022] [Indexed: 01/25/2023] Open
Abstract
Primary leiomyosarcoma of the ureter is an extremely rare, aggressive malignancy of the urinary tract. This report describes a case of primary leiomyosarcoma of the distal left ureter in a middle-aged male, with no tumor recurrence achieved following resection and end-to-end ureteroureterostomy.
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Affiliation(s)
- C Gan
- Correspondence address. Department of Urology, St Vincent’s Hospital Melbourne, Fitzroy, Victoria, Australia.
| | - A Attwell-Heap
- Department of Urology, St Vincent’s Hospital Melbourne, Fitzroy, Victoria, Australia
| | - A Clarke
- Department of Urology, St Vincent’s Hospital Melbourne, Fitzroy, Victoria, Australia
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Maikovsky Z, Gan C. 582 Transperineal Prostate Biopsies: Complication Rates and Predictors of Significant Malignancy. Br J Surg 2022. [DOI: 10.1093/bjs/znac269.507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Abstract
Aim
To ascertain the risks of undergoing a transperineal biopsy. To investigate the relationship between assessment tools and biopsy result.
Method
100 consecutive patients who received a transperineal biopsy between January and June 2021 in Lister Hospital completed a questionnaire. Their investigation results were recorded, and data analysed.
Results
Complication rates revealed 10% sustained heavy bleeding, 2% went into urinary retention, and 2% were treated with antibiotics for suspected urinary tract infection.
Erectile dysfunction was not included on the questionnaire, however 4% raised this as a concern.
Average number of cores appeared to be higher in those with complications compared to the whole sample.
Pain score generally decreased with age, over 75s averaged 3.9/10 whilst under 65s averaged as 5.4/10.
High PSA density and high PIRADS scores are well correlated with risk of positive biopsy
PIRADS 2 was an exception to this trend, showing 14% had Gleason >6 compared with 9% in PIRADS 3. Not all PIRADS 2 patients will routinely receive a biopsy and therefore this could be down to preselection bias.
All Gleason >6 cases in PIRADS 2 and PIRADS 3 had PSA density >0.15.
Conclusions
Overall complication rate is low with no readmissions. The procedure is tolerated reasonably well and 85% would be willing to have the procedure again. Possible correlation between number of cores and complications. High PSA density and high PIRADS scores are well correlated with risk of positive biopsy. PIRADS 3 with low PSA density have a low proportion of positive biopsy.
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Affiliation(s)
- Z Maikovsky
- East and North Herts NHS Trust , Stevenage , United Kingdom
| | - C Gan
- East and North Herts NHS Trust , Stevenage , United Kingdom
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Chen Q, Gan C, Guan X, Mou J, Jiang F, Xiao S, Wang W, Hong D, Deng F. POS-244 CLINICAL OBSERVATION OF POTASSIUM LOWERING EFFECT AND ADVERSE REACTIONS OF SODIUM ZIRCONIUM CYCLOSILICATE ON CHRONIC KIDNEY DISEASE PATIENTS WITH HYPERKALEMIA. Kidney Int Rep 2022. [DOI: 10.1016/j.ekir.2022.01.263] [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] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Cai S, Li Q, Zhou H, Xu Y, Song J, Gan C, Qi Z, Qi S. [Mechanism of PI3K/AKT/mTOR signaling pathway for mediating anti-inflammatory and anti-oxidant effects of chrysin: a protein microarray-based study]. Nan Fang Yi Ke Da Xue Xue Bao 2021; 41:1554-1561. [PMID: 34755672 DOI: 10.12122/j.issn.1673-4254.2021.10.15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
OBJECTIVE To investigate the mechanism of PI3K/AKT/mTOR signaling pathway for mediating the anti-inflammatory and anti-oxidant effects of chrysin. METHODS RAW264.7 cells were treated with different concentrations of chrysin for 24 h, and the changes in cell viability were detected using CCK-8 method. The cells with or without chrysin pretreatment for 2 h were stimulated with lipopolysaccharide (LPS) for different lengths of time, and the related signal molecules were screened using protein chip technique. In cells pretreated with chrysin for 2 h followed by LPS stimulation for 18 h, the release of IL-6, MCP-1 and TNF-α by the cells was detected with ELISA, and NO production was examined using Griess method, and ROS level was determined using DCFH-DA. The effects of chrysin, LPS, and their combination on the mRNA expressions of iNOS and COX-2 were detected using RT-PCR; Western blotting was performed to examine the changes in cellular expressions of p-AKT, p-PRAS40, p-mTOR, mTOR, p-P70S6k, p-S6RP and S6RP following the treatments with LPS, N-Acetyl-L-cysteine, and chrysin, alone or in combinations. RESULTS Chrysin below 60 μg/mL did not significantly affect the viability of RAW264.7 cells (P>0.05). Chrysin treatment significantly reduced the release of IL-6, MCP-1, and TNF-α and the level of NO (P < 0.01), and inhibited the mRNA and protein expressions of iNOS and COX-2 (P < 0.01) in the cells. The results of protein chip screening suggested that LPS could activate the AKT/mTOR pathway, which was significantly inhibited by chrysin pretreatment, and the results were verified by Western blotting (P < 0.01). Chrysin treatment significantly reduced the generation of endogenous ROS, and treatment with N-Acetyl-L-cysteine to eliminate intracellular ROS obviously reduced the expressions of iNOS and COX-2 (P < 0.05) and blocked the AKT/mTOR pathway (P < 0.05). CONCLUSION Chrysin can inhibit the synthesis of the upstream signaling molecule ROS to inhibit the activation of AKT/mTOR signaling pathway, regulate the translation process of ribosomes, down-regulate the synthesis and release of pro-inflammatory cytokines and inflammatory mediators, and thus produce anti-inflammatory effects.
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Affiliation(s)
- S Cai
- Key Laboratory of Active Macromolecules, Wannan Medical College, Wuhu 241002, China
| | - Q Li
- Key Laboratory of Active Macromolecules, Wannan Medical College, Wuhu 241002, China.,Department of Human Anatomy, Wannan Medical College, Wuhu 241002, China
| | - H Zhou
- Key Laboratory of Active Macromolecules, Wannan Medical College, Wuhu 241002, China
| | - Y Xu
- Key Laboratory of Active Macromolecules, Wannan Medical College, Wuhu 241002, China
| | - J Song
- Key Laboratory of Active Macromolecules, Wannan Medical College, Wuhu 241002, China
| | - C Gan
- Key Laboratory of Active Macromolecules, Wannan Medical College, Wuhu 241002, China
| | - Z Qi
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu 241002, China.,Key Laboratory of Active Macromolecules, Wannan Medical College, Wuhu 241002, China
| | - S Qi
- Department of Biochemistry and Molecular Biology, Wannan Medical College, Wuhu 241002, China.,Key Laboratory of Active Macromolecules, Wannan Medical College, Wuhu 241002, China
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Ma PP, Meng LN, Wang MT, Jin HF, Fan YH, Zha AS, Huo XH, Chen DF, Cao ZQ, Tang XF, Yang P, Shi ZH, Li TW, Meng J, Gan C, Chen GX, Sha WH, Du Q, Li Y, Lyu B. [A multicenter randomized controlled study of bismuth-containing quadruple therapy followed by Jing-Hua-Wei-Kang in the treatment of patients newly diagnosed with Helicobacter pylori infection and dyspepsia]. Zhonghua Yi Xue Za Zhi 2021; 101:2060-2065. [PMID: 34275239 DOI: 10.3760/cma.j.cn112137-20210305-00563] [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: 11/05/2022]
Abstract
Objective: To investigate the Helicobacter pylori (H. pylori) eradication rate and improvement of dyspepsia in patients who were newly diagnosed with H. pylori infection and dyspepsia and treated by bismuth-containing quadruple therapy followed by Jing-Hua-Wei-Kang(JHWK). Methods: Patients who were newly diagnosed with dyspepsia and H. pylori infection and treated in 16 medical centers in China between December 1, 2017 and September 30, 2019 were randomly divided into two groups. The experimental group received bismuth-containing quadruple therapy (esomeprazole+amoxicillin+furazolidone+colloidal bismuth pectin capsule, 14 days), followed by JHWK (30 days), and the course of treatment was 44 days in total. In the control group, the administration regimen was bismuth-containing quadruple therapy (esomeprazole+amoxicillin+furazolidone+colloidal bismuth pectin capsule, 14 days). The main outcome measure was H. pylori eradication rate, while the secondary outcome measures were dyspepsia symptom changes and adverse events during the treatment and the 1st month after treatment. Results: A total of 1 054 patients were included in the study. There were 522 cases enrolled in the experimental group, including 224(42.91%) men and 298(57.09%) women, and the age was 53(26, 73) years old; 532 cases enrolled in the control group, including 221(41.54%) men and 311(58.46%) women, and the age was 46(22, 71) years old. Based on PP analysis, it was found that the H. pylori eradication rate in the experimental group was significantly higher than those in the control group (93.85% vs 87.88%, P=0.001). In the group of all enrolled patients, the symptom dyspepsia after H. pylori eradication was significantly improved compared with that before treatment [4(4, 7) vs 15(10, 22), P<0.001], so was the superior and middle abdominal pain [1(1, 4) vs 4(1, 8), P<0.001], the postprandial fullness [1(1, 4) vs 4(4, 9), P<0.001], the early satiety [1(1, 1) vs 4(1, 4), P<0.001], and the heartburn [1(1, 1) vs 1(1, 4), P<0.001]. The symptom dyspepsia after treatment was significantly improved compared with that before treatment in the experimental, the control groups, the successful and the unsuccessful H. pylori eradication groups. The superior and middle abdominal pain after treatment was signifcantly improved than that before treatment [1(1, 2) vs 1(1, 4), P<0.001], so were the postprandial fullness [1(1, 3) vs 1(1, 4), P=0.002] and the dyspepsia[4(4, 7) VS 7(4, 10), P<0.001]. There was no statistically significant difference in the incidence of adverse events between the experimental group and the control group (1.34% vs 0.38%, P=0.09). Conclusions: Compared with bismuth-containing quadruple therapy, bismuth-containing quadruple therapy followed by JHWK significantly improves the H. pylori eradication rate without increasing the incidence of adverse events. H. pylori eradication therapy can improve symptoms of patients with H. pylori infection and dyspepsia.
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Affiliation(s)
- P P Ma
- Department of Gastroenterology, the First Affiliated Hospital of Zhejiang Chinese Medical University, Key Laboratory for Pathophysiological Research on Digestive System Diseases of Zhejiang Province, Hangzhou 310060, China
| | - L N Meng
- Department of Gastroenterology, the First Affiliated Hospital of Zhejiang Chinese Medical University, Key Laboratory for Pathophysiological Research on Digestive System Diseases of Zhejiang Province, Hangzhou 310060, China
| | - M T Wang
- Department of Gastroenterology, Jilin People's Hospital, Jilin 132012, China
| | - H F Jin
- Department of Gastroenterology, the First Affiliated Hospital of Zhejiang Chinese Medical University, Key Laboratory for Pathophysiological Research on Digestive System Diseases of Zhejiang Province, Hangzhou 310060, China
| | - Y H Fan
- Department of Gastroenterology, the First Affiliated Hospital of Zhejiang Chinese Medical University, Key Laboratory for Pathophysiological Research on Digestive System Diseases of Zhejiang Province, Hangzhou 310060, China
| | - A S Zha
- Department of Gastroenterology, the First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei 230031, China
| | - X H Huo
- Department of Gastroenterology, the First Hospital of Hebei Medical University, Shijiazhuang 050023, China
| | - D F Chen
- Department of Gastroenterology, the Chinese People's Liberation Army Medical Center, Chongqing 400042, China
| | - Z Q Cao
- Department of Gastroenterology, the Affiliated Hospital of Shandong University of Traditional Chinese Medicine, Jinan 250011, China
| | - X F Tang
- Department of Gastroenterology, Heilongjiang Provincial Hospital, Harbin 150030, China
| | - P Yang
- Department of Gastroenterology, Xiangyin People's Hospital, Xiangyin 410500, China
| | - Z H Shi
- Department of Gastroenterology, Wuhan No.1 Hospital, Wuhan 430033, China
| | - T W Li
- Department of Gastroenterology, Hubei Provincial Hospital of Traditional Chinese Medicine, Wuhan 430006, China
| | - J Meng
- Department of Gastroenterology, the Affiliated Hospital of Hebei University, Baoding 071030, China
| | - C Gan
- the First Department of Gastroenterology, the Affiliated Hospital of Jiangxi University of Traditional Chinese Medicine, Nanchang 330006, China
| | - G X Chen
- Department of Gastroenterology, Xuzhou No.1 People's Hospital, Xuzhou 221002, China
| | - W H Sha
- Department of Gastroenterology, Guangdong Provincial People's Hospital, Guangzhou 510080, China
| | - Q Du
- Department of Gastroenterology, the Second Affiliated Hospital of Zhejiang University School of Medicine, Hangzhou 310009, China
| | - Y Li
- Department of Gastroenterology, Shengjing Hospital of China Medical University, Shenyang 110004, China
| | - B Lyu
- Department of Gastroenterology, the First Affiliated Hospital of Zhejiang Chinese Medical University, Key Laboratory for Pathophysiological Research on Digestive System Diseases of Zhejiang Province, Hangzhou 310060, China
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Jin Z, Gan C, Luo G, Hu G, Yang X, Qian Z, Yao S. Notoginsenoside R1 protects hypoxia-reoxygenation deprivation-induced injury by upregulation of miR-132 in H9c2 cells. Hum Exp Toxicol 2021; 40:S29-S38. [PMID: 34212764 DOI: 10.1177/09603271211025589] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
BACKGROUND Myocardial ischemia/reperfusion injury (IRI) is a common perioperative complication of heart and great vessels surgery, aggravating the original myocardial damage and seriously affecting the postoperative recovery of cardiac function. The aim of this study was to reveal the functional effects and potential mechanisms of notoginsenoside R1 (NG-R1) in myocardial cells injured by hypoxia-reoxygenation (H/R). METHODS The rat cardiomyocyte line H9c2 was subjected to H/R with or without NG-R1 treatment. The levels of miR-132 and HBEGF in the cell were altered by microRNA or short-hairpin RNA transfection. Cell viability, apoptosis, lactate dehydrogenase (LDH) and malondialdehyde (MDA) were monitored. Dual luciferin was used to detect the relationship between miR-132 and HBEGF. RESULTS NG-R1 (20 μM) had no impact on H9c2 cells, but cell viability was significantly reduced at 80 μM. NG-R1 (20 μM) protected H9c2 cells against H/R-induced cell damage, accompanied by increased cell viability, reduced cell apoptosis, and downregulation of LDH and MDA. Furthermore, the level of miR-132 was decreased in response to H/R exposure but then increased after NG-R1 treatment. When miR-132 was overexpressed, H/R-induced cell damage could be recovered. Downregulation of miR-132 limited the protective effect of NG-R1 on H/R damage. We also found that HBEGF was a direct target of miR-132. The expression of HBEGF was increased upon H/R damage, and this increase was reversed after NG-R1 treatment. CONCLUSIONS This study demonstrated that NG-R1 markedly protected H9c2 cells against H/R-induced damage via upregulation of miR-132 and downregulation of its target protein HBEGF.
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Affiliation(s)
- Z Jin
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
| | - C Gan
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
| | - G Luo
- Department of Pharmacy, Jiangshan Hospital of Traditional Chinese Medicine, Quzhou, Zhejiang, China
| | - G Hu
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
| | - X Yang
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
| | - Z Qian
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
| | - S Yao
- Department of Pharmacy, Quzhou College of Technology, Quzhou, Zhejiang, China
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Frick A, Gan C, Vos R, Kifjak D, Neyrinck A, Klepetko W, Jaksch P, Verschuuren E, Hoetzenecker K. Lung Transplantation for Acute Respiratory Distress Syndrome: A Multicenter Experience. J Heart Lung Transplant 2021. [DOI: 10.1016/j.healun.2021.01.1037] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Scott AR, Hu J, Gan C, Morris JA, Meacham KW, Ballard DH. Safety concerns for facial topography customized 3D-printed N95 filtering face-piece respirator produced for the COVID-19 pandemic: initial step is respiratory fit testing. Int J Oral Maxillofac Surg 2020; 49:1660-1661. [PMID: 32962882 PMCID: PMC7489986 DOI: 10.1016/j.ijom.2020.08.017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 08/21/2020] [Indexed: 11/12/2022]
Affiliation(s)
- A R Scott
- Washington University School of Medicine, St. Louis, Missouri, USA
| | - J Hu
- Washington University School of Medicine, St. Louis, Missouri, USA
| | - C Gan
- Washington University School of Medicine, St. Louis, Missouri, USA
| | - J A Morris
- Washington University School of Medicine, St. Louis, Missouri, USA
| | - K W Meacham
- Department of Anesthesiology, Washington University School of Medicine, St. Louis, Missouri, USA
| | - D H Ballard
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, St. Louis, Missouri, USA.
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Gaba F, Blyuss O, Chandrasekaran D, Osman M, Goyal S, Gan C, Izatt L, Tripathi V, Esteban I, McNicol L, Ragupathy K, Crawford R, Evans DG, Legood R, Menon U, Manchanda R. Attitudes towards risk-reducing early salpingectomy with delayed oophorectomy for ovarian cancer prevention: a cohort study. BJOG 2020; 128:714-726. [PMID: 32803845 DOI: 10.1111/1471-0528.16424] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/13/2020] [Indexed: 01/16/2023]
Abstract
OBJECTIVE To determine risk-reducing early salpingectomy and delayed oophorectomy (RRESDO) acceptability and effect of surgical prevention on menopausal sequelae/satisfaction/regret in women at increased ovarian cancer (OC) risk. DESIGN Multicentre, cohort, questionnaire study (IRSCTN:12310993). SETTING United Kingdom (UK). POPULATION UK women without OC ≥18 years, at increased OC risk, with/without previous RRSO, ascertained through specialist familial cancer/genetic clinics and BRCA support groups. METHODS Participants completed a 39-item questionnaire. Baseline characteristics were described using descriptive statistics. Logistic/linear regression models analysed the impact of variables on RRESDO acceptability and health outcomes. MAIN OUTCOMES RRESDO acceptability, menopausal sequelae, satisfaction/regret. RESULTS In all, 346 of 683 participants underwent risk-reducing salpingo-oophorectomy (RRSO). Of premenopausal women who had not undergone RRSO, 69.1% (181/262) found it acceptable to participate in a research study offering RRESDO. Premenopausal women concerned about sexual dysfunction were more likely to find RRESDO acceptable (odds ratio [OR] = 2.9, 95% CI 1.2-7.7, P = 0.025). Women experiencing sexual dysfunction after premenopausal RRSO were more likely to find RRESDO acceptable in retrospect (OR = 5.3, 95% CI 1.2-27.5, P < 0.031). In all, 88.8% (143/161) premenopausal and 95.2% (80/84) postmenopausal women who underwent RRSO, respectively, were satisfied with their decision, whereas 9.4% (15/160) premenopausal and 1.2% (1/81) postmenopausal women who underwent RRSO regretted their decision. HRT uptake in premenopausal individuals without breast cancer (BC) was 74.1% (80/108). HRT use did not significantly affect satisfaction/regret levels but did reduce symptoms of vaginal dryness (OR = 0.4, 95% CI 0.2-0.9, P = 0.025). CONCLUSION Data show high RRESDO acceptability, particularly in women concerned about sexual dysfunction. Although RRSO satisfaction remains high, regret rates are much higher for premenopausal women than for postmenopausal women. HRT use following premenopausal RRSO does not increase satisfaction but does reduce vaginal dryness. TWEETABLE ABSTRACT RRESDO has high acceptability among premenopausal women at increased ovarian cancer risk, particularly those concerned about sexual dysfunction.
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Affiliation(s)
- F Gaba
- Wolfson Institute of Preventive Medicine, Cancer Research UK, Barts Centre, Queen Mary University of London, Charterhouse Square, London, UK.,Department of Gynaecological Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - O Blyuss
- School of Physics, Astronomy and Mathematics, University of Hertfordshire, Hatfield, UK.,Department of Paediatrics and Paediatric Infectious Diseases, Sechenov First Moscow State Medical University, Moscow, Russia.,Department of Applied Mathematics, Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - D Chandrasekaran
- Wolfson Institute of Preventive Medicine, Cancer Research UK, Barts Centre, Queen Mary University of London, Charterhouse Square, London, UK.,Department of Gynaecological Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK
| | - M Osman
- Wolfson Institute of Preventive Medicine, Cancer Research UK, Barts Centre, Queen Mary University of London, Charterhouse Square, London, UK
| | - S Goyal
- Wolfson Institute of Preventive Medicine, Cancer Research UK, Barts Centre, Queen Mary University of London, Charterhouse Square, London, UK
| | - C Gan
- Department of Gynaecological Oncology, Nottingham University Hospitals NHS Trust, Nottingham, UK
| | - L Izatt
- Department of Clinical Genetics, Guy's Hospital, London, UK
| | - V Tripathi
- Department of Clinical Genetics, Guy's Hospital, London, UK
| | - I Esteban
- Ninewells Hospital, NHS Tayside, Dundee, UK
| | - L McNicol
- Ninewells Hospital, NHS Tayside, Dundee, UK
| | | | - R Crawford
- Department of Gynaecological Oncology, Addenbrooke's Hospital, Cambridge University Hospitals NHS Foundation Trust, Cambridge, UK
| | - D G Evans
- Manchester Centre for Genomic Medicine, MAHSC, Division of Evolution and Genomic Sciences, University of Manchester, Manchester, UK
| | - R Legood
- Department of Health Services Research and Policy, London School of Hygiene and Tropical Medicine, London, UK
| | - U Menon
- MRC Clinical Trials Unit, University College London, London, UK
| | - R Manchanda
- Wolfson Institute of Preventive Medicine, Cancer Research UK, Barts Centre, Queen Mary University of London, Charterhouse Square, London, UK.,Department of Gynaecological Oncology, St Bartholomew's Hospital, Barts Health NHS Trust, London, UK.,MRC Clinical Trials Unit, University College London, London, UK
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13
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Liu M, Zeng X, Lu YX, Mo YJ, Liao TH, Gan C, Lu XQ. Study on molecular mechanism of MiRNA-29a in promoting proliferation and invasion of non-small-cell lung cancer by inhibiting MTSS1. Eur Rev Med Pharmacol Sci 2019; 22:5531-5538. [PMID: 30229825 DOI: 10.26355/eurrev_201809_15814] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
OBJECTIVE To investigate the biological role of micro-ribonucleic acid (miR)-29a in non-small-cell lung cancer (NSCLC). PATIENTS AND METHODS 55 cases of NSCLC tissue specimens and paired normal lung tissue specimens collected in the Department II of Oncology, Ruikang Hospital Affiliated to Guangxi University of Chinese Medicine from July 2012 to April 2015 were randomly included. The fluorescent quantitative polymerase chain reaction, Western blotting, and immunohistochemistry were performed to detect the expression levels of miR-29a and metastasis suppressor 1 (MTSS1). Pearson correlation analysis was utilized to investigate the relationship between miR-29a expression and MTSS1 expression in NSCLC tissues, and the Kaplan-Meier survival curves were constructed to analyze the association of miR-29a expression with the survival time of NSCLC patients. A54 proliferation and invasion abilities were measured by means of plate clone formation assay, and transwell assay after the miR-29a was suppressed by miRNA inhibitor. Luciferase assay was used to detect the target gene of miR-29a. RESULTS In NSCLC tissues, the miR-29a expression level was higher than that in normal lung tissues (p<0.05), while the expression level of MTSS1 protein was remarkably lower than that in normal lung tissues (p<0.05). The median survival time of the patients was 15.1 months in high miR-29a expression group and 18.3 months in low miR-29a expression group (p<0.05). The miR-29a expression was negatively correlated with the expression level of MTSS1 protein in NSCLC tissues (r=-0.762, p<0.05). Luciferase results suggest that miR-29a binds to the promoter region of MTSS1 and inhibits its transcription level. The expression of MTSS1 protein was up-regulated notably after miR-29a knockdown by an inhibitor. It was revealed in the results of transwell assay and plate clone formation assay that the proliferative and invasive capacity of A549 cells was significantly decreased after knockdown of miR-29a. CONCLUSIONS The transcribed miR-29a down-regulates the protein level of MTSS1, suppressor of tumor proliferation and invasion, thereby promoting the proliferative and invasive capacity of NSCLC cells. Both miR-29a and MTSS1 are expected to become potential therapeutic targets for NSCLC.
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Affiliation(s)
- M Liu
- Department II of Oncology, Ruikang Hospital Affiliated to Guangxi University of Chinese Medicine, Nanning, Guangxi, China.
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14
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Miah S, Dunford C, Edison M, Eldred-Evans D, Gan C, Shah TT, Lunn P, Winkler M, Ahmed HU, Gibbons N, Hrouda D. A prospective clinical, cost and environmental analysis of a clinician-led virtual urology clinic. Ann R Coll Surg Engl 2019; 101:30-34. [PMID: 30286648 PMCID: PMC6303818 DOI: 10.1308/rcsann.2018.0151] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/02/2018] [Indexed: 12/18/2022] Open
Abstract
INTRODUCTION A virtual clinic is a form of telemedicine where contact between clinical teams and patients occur without face-to-face consultation. Our study aims to quantify the clinical, financial and environmental benefits of our virtual urology clinic. MATERIAL AND METHODS We collected data prospectively from our weekly follow-up virtual clinic over a continuous four-month period between July and September 2017. RESULTS In total, we reviewed 409 patients. Following virtual clinic consultation, 68.5% of our patients were discharged from further follow-up. The majority of our patients (male 57.7%, female 55.5%) were of working age. The satisfaction scores were high, at 90.1%, and there were no reported adverse events as a result of using the virtual clinic. Our calculated cost savings were £18,744, with a predicted 12-month cost saving of £56,232. The creation of additional face-to-face clinic capacity has created an estimated 12-month increase in tariff generation for our unit of £72,072. In total, 4623 travel miles were avoided by patients using the virtual clinic, with an estimated avoided carbon footprint of 0.35-1.45 metric tonnes of CO2e, depending on mode of transport. Our predicted 12-month avoided carbon footprint is 1.04-4.04 metric tonnes of CO2e. CONCLUSIONS Our virtual clinic model has demonstrated a trifecta of positive outcomes, namely, clinical, financial and environmental benefits. The environmental importance and benefits of a virtual clinic should be promoted as a social enterprise value when engaging stakeholders in setting up such a urological service. We propose the adoption of our virtual clinic model in those urological units considering this method of telemedicine.
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Affiliation(s)
- S Miah
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK
- Division of Surgery and Interventional Science, University College London, London, UK
- Both are first joint authors
| | - C Dunford
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK
- Both are first joint authors
| | - M Edison
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK
| | - D Eldred-Evans
- Division of Surgery, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - C Gan
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK
| | - TT Shah
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK
- Division of Surgery, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - P Lunn
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK
| | - M Winkler
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK
| | - HU Ahmed
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK
- Division of Surgery, Department of Surgery and Cancer, Faculty of Medicine, Imperial College London, London, UK
| | - N Gibbons
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK
| | - D Hrouda
- Department of Urology, Imperial Healthcare NHS Trust, Charing Cross Hospital, London, UK
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Gore E, van der Bij W, Leer C, Erasmus M, Gan C, Verschuuren E. Measuring EBV in Lung Transplant Patients - Lessons of 16 Years of Follow Up. J Heart Lung Transplant 2018. [DOI: 10.1016/j.healun.2018.01.914] [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] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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Miah S, Dunford C, Edison M, Gan C, Servian P, Ahmed H, Gibbons N, Hrouda D. A prospective clinical, cost and environmental analysis of a clinician-led urology virtual clinic. ACTA ACUST UNITED AC 2018. [DOI: 10.1016/s1569-9056(18)31680-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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17
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Li F, Kang H, Li J, Zhang D, Zhang Y, Dannenberg AM, Liu X, Niu H, Ma L, Tang R, Han X, Gan C, Ma X, Tan J, Zhu B. Subunit Vaccines Consisting of Antigens from Dormant and Replicating Bacteria Show Promising Therapeutic Effect against Mycobacterium Bovis BCG Latent Infection. Scand J Immunol 2017; 85:425-432. [PMID: 28426145 DOI: 10.1111/sji.12556] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2016] [Accepted: 04/11/2017] [Indexed: 11/28/2022]
Abstract
To screen effective antigens as therapeutic subunit vaccines against Mycobacterium latent infection, we did bioinformatics analysis and literature review to identify effective antigens and evaluated the immunogenicity of five antigens highly expressed in dormant bacteria, which included Rv2031c (HspX), Rv2626c (Hrp1), Rv2007c (FdxA), Rv1738 and Rv3130c. Then, several fusion proteins such as Rv2007c-Rv2626c (F6), Rv2031c-Rv1738-Rv1733c (H83), ESAT6-Rv1738-Rv2626c (LT40), ESAT6-Ag85B-MPT64<190-198> -Mtb8.4 (EAMM), and EAMM-Rv2626c (LT70) were constructed and their therapeutic effects were evaluated in pulmonary Mycobacterium bovis Bacilli Calmette-Guérin (BCG) - latently infected rabbit or mouse models. The results showed that EAMM and F6 plus H83 had therapeutic effect against BCG latent infection in the rabbit model, respectively, and that the combination of EAMM with F6 plus H83 significantly reduced the bacterial load. In addition, the fusion proteins LT40 and LT70 consisting of multistage antigens showed promising therapeutic effects in the mouse model. We conclude that subunit vaccines consisting of both latency and replicating-associated antigens show promising therapeutic effects in BCG latent infection animal models.
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Affiliation(s)
- F Li
- Gansu Key Lab of Evidence Based Medicine and Clinical Transfer Medicine & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - H Kang
- Gansu Key Lab of Evidence Based Medicine and Clinical Transfer Medicine & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - J Li
- Gansu Key Lab of Evidence Based Medicine and Clinical Transfer Medicine & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Department of Immunology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - D Zhang
- Institute of Pathology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - Y Zhang
- Department of Molecular Microbiology and Immunology, Johns Hopkins Bloomberg School of Public Health, Baltimore, MD, USA
| | - A M Dannenberg
- Departments of Environmental Health Sciences, Epidemiology, Molecular Microbiology and Immunologyand Pathology, Johns Hopkins Medical Institutions, Baltimore, MD, USA
| | - X Liu
- Gansu Key Lab of Evidence Based Medicine and Clinical Transfer Medicine & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - H Niu
- Gansu Key Lab of Evidence Based Medicine and Clinical Transfer Medicine & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - L Ma
- Gansu Key Lab of Evidence Based Medicine and Clinical Transfer Medicine & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - R Tang
- Gansu Key Lab of Evidence Based Medicine and Clinical Transfer Medicine & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - X Han
- Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Gansu University of Chinese Medicine, Lanzhou, China
| | - C Gan
- Gansu Key Lab of Evidence Based Medicine and Clinical Transfer Medicine & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - X Ma
- Gansu Key Lab of Evidence Based Medicine and Clinical Transfer Medicine & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Department of Immunology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - J Tan
- Gansu Key Lab of Evidence Based Medicine and Clinical Transfer Medicine & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Department of Immunology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
| | - B Zhu
- Gansu Key Lab of Evidence Based Medicine and Clinical Transfer Medicine & Lanzhou Center for Tuberculosis Research, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China.,Institute of Pathogen Biology, School of Basic Medical Sciences, Lanzhou University, Lanzhou, China
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19
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Raval J, Gan C, Nagaraja V, Rangasamy K, Talisayon R, Burgess D, Denniss A. Elevation of High Sensitive Cardiac Troponin T in the Absence of Significant Obstructive Coronary Artery Disease. Heart Lung Circ 2013. [DOI: 10.1016/j.hlc.2013.05.093] [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] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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20
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Gan C, Cording E, Gregson H, Ventura M, Norton T, Azmy C, MacPhee I, Andrews P, Kingdon E, Heap S, Fronek J, Kessaris N. Hand-Assisted Retroperitoneoscopic Living Donor Nephrectomy: a Single Centre Experience of 295 Cases. Transplantation 2012. [DOI: 10.1097/00007890-201211271-00447] [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] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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21
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Lim H, Willoughby S, Schultz C, Alasady M, Gan C, Brooks A, Lau D, Leong D, Ganesan A, Abed H, Mahajan R, Nayyar S, Roberts-Thomson K, Young G, Worthley M, Sanders P. Rapid Atrial Rates and Atrio-Ventricular Dyssynchrony Predispose to Increased Thrombogenesis in the Human Left Atrium in Patients with Atrial Fibrillation. Heart Lung Circ 2012. [DOI: 10.1016/j.hlc.2012.05.265] [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] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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22
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Poole D, Gan C, Moghissi K, Gibbins S, Dixon K. PDT for Vulval Intraepithelial Neoplasia (VIN): Results of pilot study; lesson learned. Photodiagnosis Photodyn Ther 2011. [DOI: 10.1016/j.pdpdt.2011.03.153] [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] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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23
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Lim H, Willoughby S, Schultz C, Gan C, Brooks A, Alasady M, Lau D, Roberts-Thomson K, Worthley M, Young G, Sanders P. Effect of Atrial Fibrillation and Increased Atrial Rates on Markers of Left Atrial Thrombogenesis in Humans. Heart Lung Circ 2011. [DOI: 10.1016/j.hlc.2011.05.233] [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] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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24
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Lim H, Willoughby S, Gan C, Schultz C, Lau D, Leong D, Alasady M, Dimitri H, Brooks A, Wilson L, Roberts-Thomson K, Worthley M, Young G, Sanders P. Left Atrial Thrombogenesis Due to Atrial Fibrillation: Is it Rate or Rhythm? Heart Lung Circ 2010. [DOI: 10.1016/j.hlc.2010.06.877] [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] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Wang X, Yuan J, Hu J, Wu J, Gan C, He W, Luo G. Tolerant T cells inhibit natural killer cells function in antigen-presenting cells in an independent fashion. Transplant Proc 2009; 41:1844-7. [PMID: 19545741 DOI: 10.1016/j.transproceed.2008.11.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2008] [Accepted: 11/14/2008] [Indexed: 11/17/2022]
Abstract
Understanding the relationships among immune cells in the setting of immunologic tolerance is imperative to maintain organ and tissue transplants. T cells and natural killer (NK) cells are responsible for both immune tolerance and immune rejection; however, there is only limited knowledge about the relevance of T and NK cells in tolerance. To address this issue, we explored the possible actions of tolerant T cells on NK cells by the means of mixed lymphocyte co-cultures and NK cytotoxicity assays. We showed that tolerant T cell-induced blockade of the co-stimulatory pathway significantly inhibited NK cell function in vitro regarding antigen-presenting cells. This action was cell-cell-contact dependent. We argue that tolerant T cells and NK cells impart synergistic cooperation to maintain transplant tolerance.
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Affiliation(s)
- X Wang
- State Key Lab of Trauma, Burns and Combined Injury, Institute of Burn Research, Southwest Hospital, Third Military Medical University, Chongqing, China
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Boschen K, Gerber G, Gan C, Brandys C, Gargaro J. Poster 43. Arch Phys Med Rehabil 2006. [DOI: 10.1016/j.apmr.2006.07.072] [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] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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27
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Gan C, Lin Q. [High performance gel chromatographic behaviour of sodium alginate and determination of its molecular weight parameters]. Se Pu 1997; 15:147-9. [PMID: 15739406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/01/2023] Open
Abstract
The molecular weight parameters of sodium alginate were determined by high performance gel chromatography with Waters Bondagel E-High A column. The differences in high performance gel chromatographic behaviours between the sodium alginate and the non-polar standard Dextran T500 were compared. The influences of the sample concentration and the sample volume on the results were discussed. The high performance gel chromatographic behaviour of sodium alginate is different from that of Dextran T500, and is also different from those on Sepharose or Sephadex columns. The peak shifted toward full osmotic side under in crease of ionic strength. The elution volumn didn't tend toward stable, even though at the high concentration of 0.5mol/L NaCl. A change of the sample concentration at stable sample volume or the sample volume at stable sample concentration would cause tailing peaks. It was showed that the sample size of sodium alginate would be less than 25microg, and the relative standard deviations of Mn, Mw and d were 0.95%, 4.04% and 4.70%.
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Affiliation(s)
- C Gan
- Testing Centre, Fujian Agricultural University, Fuzhou, 350002
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Wu Z, Gan C, Wang A. [Investigation on HBV-M among hospital workers and observation on the efficacy of vaccination against type B hepatitis]. Zhonghua Liu Xing Bing Xue Za Zhi 1994; 15:165-6. [PMID: 7834694] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
An epidemiological study on HBV infection among 315 staff of PUMC Hospital was carried out with detection of HBsAg, anti-HBs and anti-HBc by ELISA. The results showed that 138 persons had one or more markers of HBV infection and an overall HBV prevalence rate 43.8%. The positive rates of HBsAg anti-HBs, anti-HBc were 6.3%, 28.9% and 8.6%, respectively. This indicates that HBV infection is a risk factor for medical staff, but there was no significant difference among medical, surgical and other members. In 1992, 177 workers whose HBV markers were negative received 3 doses of HB vaccine at 0, 1 and 6 months, respectively. 91.3 percent of them showed an anti-HBs response one month after the last inoculation. The result shows that our national made HB vaccine is safe and immunogenic.
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Abstract
Recent studies suggest that corneal acidosis may alter corneal structure and function. We determined whether the range of oxygen transmissibility (Dk/L) provided by a hydrogel lens could affect corneal stromal pH. Stromal pH was measured using a noninvasive fluorometric technique under both open- and closed-eye conditions on subjects who wore hydrogel lenses made of the same material but with different lens powers. Under closed-eye lens wearing conditions, central stromal pH was reduced substantially and there was no relation between degree of acidosis and lens Dk/L. Under open-eye lens wearing conditions, central stromal pH was also reduced but the degree of acidosis was dependent on lens Dk/L. These results suggest extended wear of hydrogel lenses can produce marked decreases in stromal pH which could remain reduced even after the eyes are opened.
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Affiliation(s)
- R Rivera
- Morton D. Sarver Laboratory for Corneal and Contact Lens Research, School of Optometry, University of California, Berkeley
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30
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Songling Y, Gan C, Tianjia L, Yurong L. [Distribution of early carious lesions on permanent tooth surfaces and its relationship with dental plaque]. Sichuan Yi Xue Yuan Xue Bao 1982; 13:123-30. [PMID: 6981218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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