1.γ-Synuclein protects colon cancer cells through autophagy regulation
Qing YE ; Jinhu CHEN ; Shengyuan LIU ; Yangming LI ; Lijie HUANG ; Yangmei XU ; Feng HUANG
Chinese Journal of Pathophysiology 2024;40(9):1612-1621
AIM:To investigate the effects of γ-synuclein on autophagy and apoptosis of colon cancer cells in-duced by endoplasmic reticulum stress,as well as the protective effect on the cells.METHODS:Gene expression profile chip analysis was performed to compare the cDNA expression profiles between human colon cancer HCT116 cells with γ-synu-clein knockdown and HCT116 cells with control siRNA,and to identify potential molecules related to autophagy and apop-tosis.In colon cancer cell lines,the functional effects of γ-synuclein on autophagy and apoptosis induced by thapsigargin(TG),an endoplasmic reticulum stress-inducing agent,were systematically explored by conducting immunofluorescence staining,Western blot,CCK-8 assay,flow cytometry,and transmission electron microscopy.Western blot was used to de-tect the expression of γ-synuclein protein,autophagy-related proteins[microtubule-associated protein 1 light chain 3(LC3),beclin-1,autophagy-related protein 5(ATG5)and ATG7],and apoptosis-related proteins[poly(ADP-ribose)polymerase(PARP),pro-caspase-3,and pro-caspase-9].To further analyze the mechanism of γ-synuclein in regulating autophagy and apoptosis,extracellular signal-regulated kinase(ERK)inhibitor PD98059,ERK inhibitor SP600125 and c-Jun N-terminal kinase(JNK)activator anisomycin were applied separately to test HCT116 cells transfected with γ-synu-clein siRNA.Subsequently,autophagy proteins,apoptosis proteins,and ERK and JNK pathway-related proteins were de-tected by Western blot.RESULTS:The TG-induced autophagy of colon cancer cells mainly occurred at the early stage(0~24 h),and apoptosis mainly occurred at the late stage(36~48 h).Endoplasmic reticulum stress up-regulated the ex-pression of γ-synuclein in colon cancer cells,which was associated with enhanced autophagy.γ-Synuclein promoted au-tophagy by activating ERK and JNK pathways at the early stage(0~24 h),and inhibited apoptosis by blocking JNK path-ways at the late stage(24~48 h)to protect HCT116 cells.In our model,γ-synuclein was observed to play a critical role in the transition from endoplasmic reticulum stress-induced autophagy to apoptosis.CONCLUSION:In the context of endo-plasmic reticulum stress,γ-synuclein promotes autophagy and inhibits apoptosis by regulating ERK and JNK signaling pathways,thus protecting colon cancer cells.This provides a potential idea for anti-tumor therapy.
2.Historical evolution and research progress of perioperative therapy of locally advanced gastric cancer.
Jinhu CHEN ; Qing YE ; Feng HUANG
Chinese Journal of Gastrointestinal Surgery 2019;22(2):196-200
Based on the four major classic studies of perioperative treatment of locally advanced gastric cancer (LAGC), the North American Intergroup-0116 trial, the European MRC MAGIC trial, the Japan ACTS-GC trial and Korea-China CLASSIC trial, the perioperative therapy of LAGC was divided into three major patterns in the world, namely, postoperative adjuvant chemoradiotherapy in the North America, perioperative chemotherapy in the Europe and postoperative adjuvant chemotherapy in the East Asia. In recent years, scholars around the world have done many researches on the perioperative treatment of gastric cancer. For instance the German FLOT4-AIO trial pushed the perioperative chemotherapy of gastric cancer to a high point, so the NCCN guide changed perioperative chemotherapy to the preferred recommendation, and rewrote the perioperative chemotherapy regimen. The ARTIST trial in Korea showed that the addition of radiotherapy to the adjuvant chemotherapy after D2 radical resection of gastric cancer could not improve the overall survival rate, and further defined adjuvant chemotherapy as the standard treatment in D2 resection of gastric cancer. Asian scholars are actively exploring the application of perioperative chemotherapy in LAGC. For Bulky N cases, neoadjuvant chemotherapy has been recommended as the standard treatment in the Japanese guidelines. The JOCG1509,the RESOLVE and other studies will provide more effective evidence-based recommendations for the best perioperative therapy options of LAGC in Asian countries. At present, it is not clear whether perioperative chemotherapy or postoperative adjuvant chemotherapy is better. In this article, the development course of the three patterns of perioperative therapy of gastric cancer, the research progress in the perioperative period of gastric cancer in recent years, and the changes of guidelines are reviewed in order to provide reference for clinical practice.
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3.Curative effect of middle and high flow intracranial -external vascular bypass on complex intracranial aneurysms and selection of grafts
Jinhu LIN ; Junyu WANG ; Fenghua CHEN ; Yunhong TANG ; Yuanbing CHEN ; Jian LI ; Jun HUANG
Chinese Journal of Neuromedicine 2019;18(2):144-149
Objective To explore the efficacy of middle and high (mid-high) flow intracranial-external vascular bypass in treatment of complex intracranial aneurysms and selection of grafts. Methods The clinical data of 79 patients with complicated intracranial aneurysms treated by mid-high flow extracranial-intracranial bypass in our hospital from August 2010 to October 2017 were collected retrospectively. The grafts were radial artery (n=21), saphenous vein of the calf segment (n=29) or thigh saphenous vein segment (n=29). The efficacy was determined based on Glasgow outcome scale (GOS) scores at discharge and modified Rankin scale (mRS) scores at follow-up, and the differences of occlusion in different types of grafts were analyzed. Results CTA showed patency of the grafts in all patients one d after surgery. There were 6 patients having vascular occlusion: 2 patients (the grafts at saphenous vein of the calf segment ) were occluded 3 and 4 d after surgery, without symptom; 2 patients (the grafts at the radial artery), with decreased limb muscle strength, were occluded 5 and 25 d after procedure; 2 patients ( the grafts at the saphenous veins of the calf segment) were occluded 6 months after procedure without any symptom. There were 4 patients developed cerebral ischemia after operation: one had cerebral infarction and three had vasospasm. GOS scores at discharge and mRS scores at follow-up showed that 78 patients had improved symptoms and good prognosis; one patient showed no improvement in symptoms and plant survival. Conclusion Mid-high flow extracranial-intracranial bypass for treatment of complex intracranial aneurysms is effective; the graft should be individually selected based on preoperative assessment results.
4.Evaluation of implementation effect of schistosomiasis control program in Jiangsu Province from 2010 to 2015
Liang SHI ; Jian-Feng ZHANG ; Yi-Xin HUANG ; De-Rong HANG ; Jie MIN ; Jun GE ; Chao-Yong XIE ; Lian-Heng ZHANG ; Lin WANG ; Yin-Ping ZUO ; Jing ZHOU ; Xuan ZHANG ; Yi-Qing XIE ; Bo-Chao SUN ; Gui-Sheng DING ; Jian-Feng CHEN ; Dao-Kuan SUN ; Wei LI ; Kun YANG
Chinese Journal of Schistosomiasis Control 2018;30(6):615-618
Objective To evaluate the actual effect of the schistosomiasis control program in Jiangsu Province from 2010 to 2015. Methods A total of 67 schistosomiasis-endemic counties in 10 cities were selected, and a combination of retrospective investigation and on-site investigation was adopted to collect and record the epidemic data of the counties from 2010 to 2015, and a retrospective survey database of epidemic situation was established. The effects of integrated control strategies with both Oncomelania hupensis snail control and infection source control were evaluated. Results From 2010 to 2015, 2 465 911 persons who lived in endemic areas were detected for schistosomiasis, with 16 974 positive cases of blood examinations, and 8 positive cases of fecal examinations. Totally 5 145 people with advanced schistosomiasis were treated and 40 460 people with the history of schistosome cercarial-infested water contact received the expanded chemotherapy. A total of 127 636 cattle raised in the endemic areas were detected, and 51 619 cattle (head-times) with the history of cercarial-infested water contact also received the expanded chemotherapy. The area with snails control by molluscicides was 18 604.84 hm2. By the end of 2015, schistosomeinfected snails had not been found and there was no zoological schistosome infection for 5 consecutive years, and in addition, there had been no acute schistosome-infected persons for 6 consecutive years in the whole province. The area with snails dropped to 1 977.18 hm2, with a decreasing rate of 55.24% compared with that in 2010. Conclusion After the implementation of the plan for the prevention and control of schistosomiasis in Jiangsu Province (2010–2015), the prevention and control of schistosomiasis has achieved remarkable effects and realized the goal of the plan.
5.Clinical treatment progress of pseudomyxoma peritonei syndrome
Jinhu CHEN ; Qing YE ; Feng HUANG
Cancer Research and Clinic 2018;30(5):344-347
Pseudomyxoma peritonei syndrome (PMP) is characterized by a gradual expansion of mucoid tumour and fluid at specific sites within abdominopelvic regions as a result of a perforated appendiceal adenoma. The standard therapy for PMP is combining cytoreductive surgery (CRS) plus hyperthermic intraperitoneal chemotherapy. Maximal tumor debulking surgery (MTD) may be beneficial in patients in whom complete cytoreductive surgery (CCRS) cannot be achieved. It is now recognized that CCRS is one of the strongest predictors of long term survival in patients with PMP. The 5-year survival rate in patients who underwent CCRS was 80.0 %-87.4 %, however the rate in patients who underwent MTD was only 24.0 %-39.2 %.This article reviews the pathological classification,diagnosis and treatment of PMP.
6.A study on the relationship between intrauterine infection and early-onset neonatal sepsis
Yuanzhi ZHONG ; Jinhu WANG ; Yuxia CHEN ; Yuqin YAN ; Tihai XIAO ; Ling LIU ; Zhen HE ; Wei SONG ; Guoqing HUANG ; Huayan LIU ; Benqing WU
Chinese Journal of Neonatology 2017;32(4):246-249
Objective To study the relationship between intrauterine infection and early neonatal sepsis.Method From October 2015 to September 2016,the clinical data of pregnant mothers and their newborns in Shenzhen Longhua District Central Hospital were collected,and data of Shenzhen People's Hospital from January 2016 to June 2016 were collected.100 pairs of pregnant mothers and their newborns with confirmed or suspected intrauterine infection were selected as the observation group,and another 100 pairs without intrauterine infection during the same period as the control group.The ratio of term infants vs.premature infants was 1∶ 1.The complete blood count (CBC),CD64,procalcitonin (PCT) and C-reactive protein (CRP) were measured in peripheral blood of all mothers on the day of delivery.The CBC,CD64,CRP,PCT,blood culture of both umbilical venous blood and peripheral blood in neonates were examined and the pathological examination of placenta was performed.Result The positive rate of placental pathology and umbilical cord blood culture in observation group were significantly higher than that in the control and the positive rate in preterms was higher than the terms in observation group (P < 0.05).No significant differences existed between term and premature newborns on the positive rate of peripheral blood culture (P > 0.05).The positive rate of blood culture from umbilical cord blood was higher than peripheral blood in observation group (P < 0.05),but no significant difference in control group (P > 0.05).The incidence of septicemia in term and premature newborns in observation group was significantly higher than the control group (P< 0.05).The CD64,PCT in mother's peripheral blood and umbilical cord blood,and CRP in mother's blood were all higher than the control group,the differences were statistically significant (P < 0.05),but CRP in umbilical cord blood in both group were similar (P > 0.05).The area under ROC curve of CD64 and PCT in mother's peripheral blood,CD64 and PCT in umbilical cord blood to diagnose early-onset septicemia in newborns was 0.755,0.793,0.852 and 0.811,respectively.Conclusion The risk of neonatal infections is significantly increased because of intrauterine infection.Combination of peripheral and umbilical blood cultures can increase the accuracy of sepsis diagnosis.Both CD64 and PCT in umbilical cord blood and maternal blood can be used as indicators of intrauterine infection with a predictive value in the diagnosis of early-onset neonatal sepsis.
7.Survey on the service contract signature of primary medical and health institutions in China
Tao YIN ; Delu YIN ; Kun QIN ; Ruifang SHE ; Lin JING ; Jinhu HUANG ; Chenggang JIN ; Chunfang MAO ; Xiangdong ZHANG ; Bowen CHEN
Chinese Journal of Hospital Administration 2016;32(3):213-216
Objective To understand the status of service contract signing conducted by primary medical and health institutions.Methods A questionnaire survey and in-depth interview methods were used to study the service contract signing at primary health care institutions.Results The contract signing rate of the institutions surveyed was 1 9.1%,and valid contract signing rate was 76%.Senior people above 65 years old accounted for 33.5% of those signers,while hypertension patients accounted for 1 9.5% and diabetes patients for 10.6%.Interviews to the general practitioners team at the primary health institutions found that main factors affecting residents′ intention to sign were drug availability, attraction for signing the services,treatment habits among others.Interviews to the staff the primary health institutions found that contracted services are facing such difficulties as medical staff shortage,lack of motivation,lack of competence among others.Interviews to leaders of the primary health institutions found that the lack of publicity and support of medical insurance also has great influence to service contract signing.Conclusions The enthusiasm of general practitioners and residents to sign up for the service remains to be improved.
8.Effect of sign-contract service on blood pressure control and patients satisfaction of hyperten-sive patients in primary health centers:Based on investigation in 10 provinces
Tao YIN ; Delu YIN ; Kun QIN ; Ruifang SHE ; Lin JING ; Jinhu HUANG ; Chenggang JIN ; Chunfang MAO ; Xiangdong ZHANG ; Bowen CHEN
Chinese Journal of Health Policy 2015;(6):46-51
Objective:To investigate the effects of sign-contract services on hypertension patient disease control and the satisfaction of medical staff. Methods:a face-to-face questionnaire survey was conducted among hypertension patients selected from 20 primary health centers in 10 provinces in China. Results:This paper collected 1 ,881 valid questionnaires, and the average age of the population was 65. 72 ± 10. 88. Respondents that received sign-contract services accounted for 53. 88%, and there was no difference between patients who signed the service contract and who did not in terms of demographics. In self-reporting of blood pressure controls, respondents who signed the service contract, aged 40~50 years old, enjoyed the free medical care, preferred to seek medical services from primary a-gencies ( i. e. community health centers and township hospitals) for minor illnesses, controlled their blood pressure better ( P<0. 05 ) . Respondents enjoyed the civil resident medical insurance, preferred to seek medical care from community health centers for minor illnesses and signed the service contract were more likely to be satisfied with their medical practitioner (P<0. 05). After adjusting for age, gender, education level, medical insurance style, patient willingness to seek medical care for minor illnesses, signing service contracts was found to be an independent factor both associated with blood pressure self-control and attitudes towards medical service providers, with the odds ratio of 3. 007 (95%CI:2. 572 -3. 517) and 1. 814 (95%CI: 1. 563 -2. 105) respectively. Conclusion: Contracts are correlated with blood pressure control and satisfaction toward medical practitioners, which means that patients who signed the service contract control their blood pressure better and are more satisfied with their medical deliverers.
9.Determination of Camphol and Isoborneol in Shaoshang Yuhe Gao
Jili ZOU ; Bin XU ; Jinhu WU ; Yonggang CHEN ; Dandan HUANG
Herald of Medicine 2014;(7):944-946
Objective To establish a capillary gas chromatography method for determination of camphol and isoborneol in Shaoshang yuhe gao ( burn healing cream) . Methods The capillary gas chromatography was adopted under the following conditions: use PEG-2000 as the stationary liquid,nitrogen as carrier gas,ZB-WAX (30 m×0. 25 mm,0. 25 μm) as the chromatographic column,and the flame ionization detector. The column temperature was programmed at 80 ℃ for 5 min as the initial temperature,then raised to 180 ℃ at the rate of 5℃·min-1 and kept for 10 min. The shunt ratio was 101. Results The liner range for camphol was 0. 487 5-31. 25 μg ( r =0. 999 6),and the average recovery was 95. 95%( n =6). The liner range for isoborneol was 0. 487 5-31. 25 μg( r =0. 999 7),and the average recovery was 96. 44%( n =6). Conclusion The method is accurate,sensitive,and can be applied to quality control of shaoshang yuhe gao.
10.Surgical technique of combined anterior-lateral and lateral approach in the management of bone tumor of femoral neck
Dengxing LUN ; Yongcheng HU ; Hongchao HUANG ; Qun XIA ; Jun MIAO ; Jinhu YU
Chinese Journal of Orthopaedics 2011;31(2):119-125
Objective To explore surgical procedure of combined anterior-lateral and lateral approach for the treatment of bone tumors of femoral neck. Methods Forty patients with bone tumors of femoral neck treated in Tianjin Hospital were included from July 2005 to August 2009. Of the patients, 12 who were treated with curettage and bone graft through combined anterior-lateral and lateral incision were analyzed in this study. There were 7 males and 5 females with an average age of 34 years ranging from 17 to 68 years. 4 patients were diagnosed as chondroblastoma, 2 giant cell tumor, 3 fibrous dysplasia, and 3 single bone cysts. 7 patients suffered from pathologic fractures, and 5 had presented thin cortical bone because of tumor involvement. There were 1 tumor located in H1 zone, 4 in H2 zone and 7 in H1,2 zone according to ISOLS femoral neck classification. All patients were treated by curettage and bone graft via anterior-lateral approach, 10 cases underwent internal fixation with anatomical plate, and 2 cases with canulated screws with lateral approach. Results The follow-up time ranged from 10 to 68 months with an average of 35 months.Pain disappeared in all patients, and there were not recurrence of tumor, pathologic fractures and avascular necrosis. One case had complained of lateral femoral skin numbness which may be caused by injures of femoral lateral nerves. One case had difficulties in the valgus of hip joint. The mean MSTS score was 29.2 points ranging from 27 to 30 points. Conclusion Anterior approaches of "SP" incision is helpful to thorough curettage which decrease the risk of recurrence due to good visualization and intemal fixation is easy to perform via lateral approaches. The result suggested that combined anterior-lateral "SP" and lateral incision is liable option in treatment of bone tumors of femoral neck.

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