Objective To investigate the effects of miR-483-3p on hypoxia/reoxygenation(H/R)-induced apoptosis and pyroptosis of H9c2 cardiomyocytes and its possible mechanism.Methods Rat H9c2 cardiomyocytes were cultured in vitro,adeno-associated virus-infected H9c2 and the H/R model were constructed by triple-air incuba-tor,and the cells were randomly divided into blank control(Sham)group,model(H/R)group,AAV-miR-483-3p mimic+H/R(AAV-miR-483-3p)group,AAV-miR-483-3p negative control+H/R(AAV-NC)group.The growth status of cells in each group was observed using an inverted microscope;cell proliferation activity was detected by cell counting kit-8(CCK-8);LDH release by lactate dehydrogenase(LDH)kit;apoptosis rate by flow cytometry;apoptosis by notched end labeling(TUNEL).Western blot(WB)was used to detect the expression levels of IL-1β and GSDMD proteins in each group.Results Compared with the Sham group,the H/R group showed abnormal cell status and increased cell death,decreased cell activity,increased LDH release,increased apoptosis rate and apopto-sis level,and increased expression levels of IL-1β and GSDMD proteins(P<0.05);compared with the H/R group,the AAV-miR-483-3p group showed improved cell status and less cell death,increased cell proliferation activity,increased LDH release,and increased IL-1β and GSDMD protein expression levels(P<0.05).Compared with the H/R group,the AAV-miR-483-3p group showed improved cell status and less cell death,increased cell proliferation activity,decreased LDH release,decreased apoptosis rate and apoptosis level,and decreased expression of IL-1β and GSDMD proteins(P<0.05).Conclusion Over-expression of miR-483-3p can improve H/R-inducedH9c2 cardiomyocyte injury by enhancing cell activity and cell metabolism,and inhibiting apoptosis and cell charring.

Objective To investigate the effects of miR-483-3p on hypoxia/reoxygenation(H/R)-induced apoptosis and pyroptosis of H9c2 cardiomyocytes and its possible mechanism.Methods Rat H9c2 cardiomyocytes were cultured in vitro,adeno-associated virus-infected H9c2 and the H/R model were constructed by triple-air incuba-tor,and the cells were randomly divided into blank control(Sham)group,model(H/R)group,AAV-miR-483-3p mimic+H/R(AAV-miR-483-3p)group,AAV-miR-483-3p negative control+H/R(AAV-NC)group.The growth status of cells in each group was observed using an inverted microscope;cell proliferation activity was detected by cell counting kit-8(CCK-8);LDH release by lactate dehydrogenase(LDH)kit;apoptosis rate by flow cytometry;apoptosis by notched end labeling(TUNEL).Western blot(WB)was used to detect the expression levels of IL-1β and GSDMD proteins in each group.Results Compared with the Sham group,the H/R group showed abnormal cell status and increased cell death,decreased cell activity,increased LDH release,increased apoptosis rate and apopto-sis level,and increased expression levels of IL-1β and GSDMD proteins(P<0.05);compared with the H/R group,the AAV-miR-483-3p group showed improved cell status and less cell death,increased cell proliferation activity,increased LDH release,and increased IL-1β and GSDMD protein expression levels(P<0.05).Compared with the H/R group,the AAV-miR-483-3p group showed improved cell status and less cell death,increased cell proliferation activity,decreased LDH release,decreased apoptosis rate and apoptosis level,and decreased expression of IL-1β and GSDMD proteins(P<0.05).Conclusion Over-expression of miR-483-3p can improve H/R-inducedH9c2 cardiomyocyte injury by enhancing cell activity and cell metabolism,and inhibiting apoptosis and cell charring.

Objective To study a distinct type of cochlear malformation,differentiated by its radiological feature,from the current Sennaroglu's classification criteria along with its clinical manifestations.Methods By analyzing the radio-logical findings from high-resolution CT(HRCT)of the temporal bone and 3D-dimensional magnetic resonance imaging(3D-MRI)of the inner ear in 11 cases(13 ears)with special cochlear malformations,we summarized the characteristics of this type of cochlear deformity.Results ① The radiological features of this type of cochlear malformation showed that only a part of the cochlear basal turn originated ventrally from the vestibule,with no or only partial inward turning.There were no upper,middle,or apical turns(cochlea with less than 0.5 turns),and the modiolus and interscalar septa were absent.On HRCT axial images,there was no connection observed between the cochlea and the internal auditory canal(IAC).MRI results consistently showed a cochlear nerve deficiency(CND),with audiometric findings indicating complete hearing loss.Most cases were accompanied by abnormally developed vestibules and malformed semicircular canals,and the cochlea on the opposite side often had severe malformations as well.② Based on the imaging characteristics,this type of cochlear malfor-mation,with only partial development of the basal turn(cochlea with less than 0.5 turns),was categorized as cochlear hy-poplasia(CH).We provisionally designated it as cochlear hypoplasia type X(CH-X).Conclusion Cochlear hypoplasia(CH-X),characterized by cochlea with less than 0.5 turns,represents a severe type of inner ear malformation,accounting for approximately 2％of such deformities.Due to the malformed cochlea lacking a distinct bony cochlear nerve canal(BC-NC)and cochlear nerve(CN),the potential benefits of cochlear implant surgery may be relatively limited.

At present,precise radiotherapy has been widely used through the development with many years,but the existing technique still is limited by the limitation of tolerance dose of normal tissues,which cannot achieve the optimal goal of treating tumor.Flash radiotherapy(Flash-RT)is one kind of radiotherapy technique that uses the beam with ultra-high dose rate(UHDR)to conduct irradiation,which can furthest treat tumors while significantly reduce radiation injury of normal tissues.But until now,the biological mechanism,key physical parameters and triggering mechanism of Flash-RT are still unclear,and its principle and clinical translational application are still in the stage of research.This review clarified the technological advance and clinical translational application of Flash-RT research through summarized the relevant research of Flash-RT.

Objective To explore the grading of acute gastrointestinal injury(AGI)events in patients with different severities of acute ischemic stroke(AIS)and correlation of short-term prognosis.Methods AIS patients admitted from the Advanced Stroke Center of the Eighth Clinical Medical College of Guangzhou University of Chinese Medicine from January 2023 to November 2023 were retrospectively selected,and depending on the degree of nerve function defect(NIHSS)scores.AIS patients were divided into two groups:NIHSS ≤ 14 group and NIHSS＞14 group.The National Institute of Health Stroke Scale(NIHSS)score,general baseline data,clinical test indicators,AGI event classification and short-term prognosis were collected at admission.Results A total of 270 patients were included,with an average age of(64.95±13.65)years,70.0％males and 30.0％females.The proportion of AIS patients with AGI incident accounted for 66.30％.AIS patients after AGI incidents,90 days after the onset of the modified Rankin rating scale(mRS)score＞2 points of 83 people,accounting for 30.7％;The poor clinical outcomes of 270 AIS patients with different AGI event grades were significantly different(P＜0.05),among which AGI grade 0 and AGI grade Ⅰ were significantly different from AGI grade Ⅲ and AGI grade Ⅳ,respectively.The incidence of poor prognosis of AGI grade Ⅲ and AGI grade Ⅳ is significantly higher than that of AGI grade 0 and AGI grade Ⅰ.In AIS patients with NIHSS＞14 group,there were significant differences in the adverse clinical outcomes between AGI grade 0,AGI grade Ⅰ and AGI grade Ⅲ(P＜0.05),and the incidence of poor prognosis of AGI grade Ⅲ was significantly higher than that of AGI grade 0 and AGI grade Ⅰ.Multivariate Logistic regression analysis showed that NIHSS score was an independent risk factor for AGI events in AIS patients(P＜0.05).The higher the NIHSS score,the higher the risk of AGI events in AIS patients.And age,NIHSS score,systolic blood pressure is 90 days after AGI events affect AIS patients independent risk factors of poor prognosis(P＜0.05),the higher the age,the greater the NIHSS score,the higher systolic blood pressure of patients with AIS 90 days after AGI events are at higher risk of poor prognosis.Conclusion AGI event grading in patients with AIS of different severity is associated with short-term prognosis.

Objective To explore the grading of acute gastrointestinal injury(AGI)events in patients with different severities of acute ischemic stroke(AIS)and correlation of short-term prognosis.Methods AIS patients admitted from the Advanced Stroke Center of the Eighth Clinical Medical College of Guangzhou University of Chinese Medicine from January 2023 to November 2023 were retrospectively selected,and depending on the degree of nerve function defect(NIHSS)scores.AIS patients were divided into two groups:NIHSS ≤ 14 group and NIHSS＞14 group.The National Institute of Health Stroke Scale(NIHSS)score,general baseline data,clinical test indicators,AGI event classification and short-term prognosis were collected at admission.Results A total of 270 patients were included,with an average age of(64.95±13.65)years,70.0％males and 30.0％females.The proportion of AIS patients with AGI incident accounted for 66.30％.AIS patients after AGI incidents,90 days after the onset of the modified Rankin rating scale(mRS)score＞2 points of 83 people,accounting for 30.7％;The poor clinical outcomes of 270 AIS patients with different AGI event grades were significantly different(P＜0.05),among which AGI grade 0 and AGI grade Ⅰ were significantly different from AGI grade Ⅲ and AGI grade Ⅳ,respectively.The incidence of poor prognosis of AGI grade Ⅲ and AGI grade Ⅳ is significantly higher than that of AGI grade 0 and AGI grade Ⅰ.In AIS patients with NIHSS＞14 group,there were significant differences in the adverse clinical outcomes between AGI grade 0,AGI grade Ⅰ and AGI grade Ⅲ(P＜0.05),and the incidence of poor prognosis of AGI grade Ⅲ was significantly higher than that of AGI grade 0 and AGI grade Ⅰ.Multivariate Logistic regression analysis showed that NIHSS score was an independent risk factor for AGI events in AIS patients(P＜0.05).The higher the NIHSS score,the higher the risk of AGI events in AIS patients.And age,NIHSS score,systolic blood pressure is 90 days after AGI events affect AIS patients independent risk factors of poor prognosis(P＜0.05),the higher the age,the greater the NIHSS score,the higher systolic blood pressure of patients with AIS 90 days after AGI events are at higher risk of poor prognosis.Conclusion AGI event grading in patients with AIS of different severity is associated with short-term prognosis.

Objective To investigate the clinical effect of application of dezocine combined with sufentanil in patients under‐going thoracic surgery ,and discuss its security .Methods Selected 60 cases of patients undergoing thoracic surgery treatedn in the hospital from January to June 2013 ,then divided into two groups with 30 cases in each group randomly .ASA grade Ⅰ - Ⅱ ,the ob‐servation group took dezocine combined with sufentanil after the surgery ,the control group took sufentanil for analgesia ,then ob‐served the analgesia and sedative effect and the occurrence rate of adverse reaction between two groups of patients .Results The observation group′VAS pain score on postoperative 6 ,12 ,24 ,48 h were (3 .21 ± 0 .76)% ,(3 .01 ± 0 .77)% ,(2 .79 ± 0 .69)% , (2 .67 ± 0 .66)% and significantly better than the control group(P<0 .05);The observation group′Ramsay sedation score on post‐operative 6 ,12 ,24 ,48 h were (2 .12 ± 0 .23)% ,(2 .07 ± 0 .22)% ,(2 .02 ± 0 .24)% ,(2 .01 ± 0 .21)% ,the sedative effect was better than the control group(P<0 .05);48 h after the surgery the pressing times and effective analgesia pump frequency and adverse re‐action of the patients in the observation group were lower than that of the control group(P<0 .05) .Conclusion The effect for se‐dation and analgesia of dezocine combined with sufentanil in patients undergoing thoracic surgery is better and safe .

Objective To study the characteristics and treatments of occlusive abdominal injuries during pregnancy. Methods The clinical data of 37 cases with occlusive abdominal injuries admitted in hospital from June 1993 to June 2003 were collected for study. Results All 37 cases received operative treatment, of which two cases complicated by enterorrhexis in the early pregnancy and one by retroperitoneal hematoma were managed using laparoscope. Laparotomy was performed in other 34 cases, of which eight received caesaren section because of placental abruption and enlarged uterus that impeded the management for intraabdominal organs. Of all, 33 cases (33/37,89%) were cured and four (4/37, 11%) died. The postoperative incidence of complications was 16% (6/37). The complications included abdominal cavity infection in two cases (5%), pulmonary infection in three (8%) and multiple organ failure in one (3%). Conclusion Besides obstetrics' diseases, we must keep alert about the injury of abdominal organs during the management of trauma. Accurate diagnosis and timely treatment will win time to save the lives of mother and infant.

Objective :To study mutation of Ps3 gene and its relationship with histologic grade and Dukes' stage in colorectal cancer. Methods :PCR-SSCP was used to detect mutations of Ps3 in 30 colorectal cancer patients. Results: It was found that 6 mutations (20. 0%) in the coding region of P53 gene. One mutation was located in exon4; 5 mutations were located in exon 5; none of mutation was found in exon 2 and 3. According to the histologic grade of of colorectal cancer,the frequencies of P53 gene mutation were 1/8 (12. 5%) in the well differentiated and in the moderately differentiated as well,3/10 (30. 0%) in the poorly differenctiated and 1/4 (25.0%) in the undifferentiated. In clinic, the frequencies of P53 gene mutation were associated with Dukes stage: 1/10 (10. 0 % ) in B stage, 2/12 (16. 7%) in C Stage,3/8(37. 5%) in D stage. Conclusion:The mutation of P53 gene is related to Dukes＇ stage,and the P53 gene mutation hardly occurs in exon 2,3 in coloretal cancer.