1.The role of large language models in recommending intervention disciplines and interventional therapies
Journal of Interventional Radiology 2025;34(11):1204-1209
Objective To explore the current status of big language models in recommending intervention disciplines and interventional therapies.Methods Four mainstream models,including Kimi k1.5,Doubao,DeepSeek-Rl and ChatGPT-4o were selected,and the standardized questions("recommended departments"and"treatment methods")for 18 common interventional diseases were designed.Through three repeated tests,the recommendation data were collected,and SPSS 25.0 was used to perform statistical analysis.Results Major language models recommended interventional physicians and their treatment methods to a certain extent,among which lower limb arterial occlusion and Stanford B-type aortic dissection in circulatory system diseases got the highest recommendation rates(100%)in interventional medicine and interventional treatment respectively,ranking among the top three recommendations.In contrast,benign prostatic hyperplasia had the lowest recommendation rate,with no recommendations for either interventional department or interventional treatment.Conclusion Large language models show disease-specific differences in recommendations for interventional radiology.Among the diseases involved in this study,circulatory system diseases have the highest referral degree,while urogenital system diseases have the lowest.The training data of the models need to further strengthen the coverage of scenario data related to the interventional department and its treatment methods,so as to gradually improve the social awareness of the interventional department.
2.Protective mechanism of tanshinone on acute liver failure induced by D-galactosamine in rats
Yanting XIAO ; Danxia HUANG ; Fengrui HUANG ; Zhihui ZHAO
Journal of Clinical Medicine in Practice 2025;29(7):58-63,70
Objective To investigate the protective effect and mechanism of tanshinone ⅡA on D-galactosamine(D-GalN)-induced acute liver failure in rats.Methods SD rats were randomly di-vided into control group,model group(intraperitoneal injection of 1.1 g/kg D-GalN),low-dose group(intraperitoneal injection of 1.1 g/kg D-GalN+daily gavage of 25 mg/kg tanshinone ⅡA),and High-dose group(intraperitoneal injection of 1.1 g/kg D-GalN+daily gavage of 50 mg/kg tan-shinone ⅡA).Liver function indicators[aspartate aminotransferase(AST),alanine aminotransferase(ALT),and γ-glutamyltransferase(γ-GT)]were measured using a Hitachi7600-210 biochemical an-alyzer,and serum total bilirubin(TBIL)and direct bilirubin(DBIL)levels were determined.The mitotic index(MI)and proliferating cell nuclear antigen(PCNA)positivity in liver tissues were examined.Enzyme-linked immunosorbent assay(ELISA)was used to detect plasma levels of tumor necrosis factor(TNF-α),interleukin(IL)-1β,IL-10,and IL-6 in rats from each group.Kits were employed to measure superoxide dismutase(SOD),glutathione(GSH),and malondialdehyde(MDA)contents in liver tissues of rats from each group.The TUNEL method was adopted to detect hepatocyte apoptosis rates in liver tissues,and immunoblotting was used to assess the expression of phosphorylated extracellular signal-regulated kinase 1/2(p-ERK1/2)and extracellular signal-regu-lated kinase 1/2(ERK1/2)proteins in liver tissues.Results Compared with the control group,the model group exhibited increased p-ERK1/2 protein expression(P<0.05).Compared with the model group,both the low-dose and high-dose groups showed decreased p-ERK1/2 protein expres-sion(P<0.05).The model group had an increased hepatocyte apoptosis index compared with the control group(P<0.05).Both the low-dose and high-dose groups demonstrated decreased hepato-cyte apoptosis indices compared with the model group(P<0.05).Compared with the control group,the model group had increased MDA levels and decreased SOD and GSH levels(P<0.05).Both the low-dose and high-dose groups exhibited decreased MDA levels and increased SOD and GSH levels compared with the model group(P<0.05).The model group showed increased levels of TNF-α,IL-1β,IL-10,and IL-6 compared with the control group(P<0.05).Both the low-dose and high-dose groups had decreased levels of TNF-α,IL-1 β,IL-10,and IL-6 compared with the model group(P<0.05).Compared with the control group,the model group had decreased MI and PCNA positivity rates(P<0.05).Both the low-dose and high-dose groups exhibited increased MI and PCNA positivity rates compared with the model group(P<0.05).The model group had in-creased AST,ALT,γ-GT,TBIL and DBIL values compared with the control group(P<0.05).Both the low-dose and high-dose groups showed decreased AST,ALT,γ-GT,TBIL and DBIL val-ues compared with the model group(P<0.05).Conclusion Tanshinone ⅡA may alleviate D-GalN-induced acute liver failure in rats through the ERK1/2 signaling pathway.
3.Methods and application effects of simultaneous correction of sunken upper eyelid during double eyelid plasty
Zhihui DAI ; Lei WU ; Sen HAI ; Bin DONG ; Chong LIN ; Lulu ZHANG ; Li ZHAO
Chinese Journal of Plastic Surgery 2025;41(9):951-960
Objective:To investigate the method and clinical efficacy of simultaneous correction of sunken upper eyelid during double eyelid plasty.Methods:A retrospective analysis was conducted on patients with single eyelids and sunken upper eyelid treated at the Department of Plastic Surgery, the First People’s Hospital of Zhengzhou, from October 2022 to February 2024. All patients underwent incisional double eyelid plasty with individualized correction based on depression severity. For mild depression, a combination of pretarsal orbicularis oculi muscle flap folding and orbital septum fat flap transposition was performed for correction. For moderate depression, additional autologous stromal vascular fraction (SVF)-gel grafting would be performed if residual depression persisted after the aforementioned approach. For severe depression, if the orbital fat was sufficient, the orbicularis oculi muscle flap folding, orbital fat flap repositioning and autologous SVF-gel transplantation were used. If there was insufficient orbital fat, the correction involved the use of a orbicularis oculi muscle flap and SVF-gel transplantation. Postoperative follow-up was conducted regularly, and related complications were statistically analyzed. Six months after the surgery, two blinded plastic surgeons evaluated outcomes via visual analog scale (VAS), including five aspects: symmetry of palpebral folds(including width and curvature of the double eyelid fold), fold contour, depression improvement, scar quality, overall eyelid aesthetics. Each aspect was rated on a scale from 1 to 10, with higher scores indicating better outcomes. Patient satisfaction was scored separately (1-5 per item), with higher scores indicating greater satisfaction.Results:A total of 64 patients were enrolled, including 4 males and 60 females; the age ranged from 19 to 66 years[ (32.0±9.7) years]. The degree of sunken upper eyelid was mild in 33 cases, moderate in 19 cases and severe in 12 cases. All patients underwent double eyelid plasty and orbicularis oculi flap folding. Based on this, 45 cases (33 mild and 12 moderate cases) underwent orbital septum fat flap transposition, 11 severe cases underwent SVF-gel grafting, and 8 cases (7 moderate and 1 severe cases) required combined approaches to correct depression. During the procedure, 19 cases (38 sides) received (1.8±0.8) ml of SVF-gel injection. Among these cases, one case with severe sunken upper eyelid who did not receive orbital fat transfer was injected with high density fat (left side: 0.6 ml, right side: 0.8 ml) due to insufficient SVF-gel volume. Two cases with severe sunken upper eyelid who only had autologous SVF-gel transplantation did not fully correct the depression within 3 months post-surgery received a second SVF-gel injection[(1.0±0.1) ml]. Follow-up was conducted for 6 to 12 months after surgery. All patients experienced varying degrees of eyelid edema, which typically lasted 2 to 3 months. Ecchymosis (34 sides), conjunctival congestion (3 sides), and temporary ptosis (5 sides) all resolved within 2 weeks. Pigmentation (14 sides) and scar hyperplasia (3 sides) disappeared or stabilized within 6 months. No patients developed complications such as incision infection, hematoma, fat liquefaction, local skin unevenness, or induration. The surgeons’ VAS scores of the above five indicators were all > 8 points, and the satisfaction scores of patients for the five indicators were all > 4 points. In both scoring, the improvement of sunken upper eyelid scored the highest, which were (9.2 ± 0.9) points and (4.8 ± 0.6) points respectively.Conclusion:For patients with single eyelids and varying degrees of sunken upper eyelid, performing double eyelid plasty and orbicularis oculi muscle flap folding, individualized correction is achieved through autologous fat redistribution techniques, based on the severity of the sunken upper eyelid and the amount of orbital fat. This single procedure can restore upper eyelid volume and rejuvenate the appearance, resulting in a natural and aesthetically pleasing double eyelid with minimal complications and high patient satisfaction.
4.Efficacy of reduction robot system combined with minimally invasive, microenvironmental protection, micro-stress shielding fixator in the treatment of Sanders types II and III calcaneal fractures
Xiaohui HAO ; Yongqing WANG ; Zhanmin XU ; Xinan ZHANG ; Zhihui ZHAO ; Jingtao SUN ; Zhiqiang YANG ; Meiyue LIU ; Weiyong WU ; Baoxi HAO ; Juwen CHEN
Chinese Journal of Trauma 2025;41(5):463-470
Objective:To evaluate the efficacy of reduction robot system combined with minimally invasive, microenvironmental protection, micro-stress shielding fixator (short for "3M fixator") for Sanders types II and III calcaneal fractures.Methods:A retrospective case series study was conducted to analyze the clinical data of 26 patients (26 feet) with calcaneal fractures admitted to Fourth Affiliated Central Hospital of Tianjin Medical University from June 2022 to June 2024, including 21 males and 5 females, aged 27-69 years [(46.5±2.5)years]. Among them, 10 patients had fractures in the left foot and 16 in the right. According to the Sanders classification, the fractures were classified as type II in 16 patients and type III in 10. All the patients were treated with the close reduction with reduction robot system combined with 3M fixator in a minimally invasive procedure. The surgical waiting time, operative duration, and fracture healing time were recorded. The length, width and height of the calcaneus, B?hler′s angle and Gissane′s angle were compared before operation and at 1, 3 months after operation. The visual analogue scale (VAS) and American Orthopedic Foot and Ankle Society (AOFAS) ankle-hindfoot score before operation and at 1, 3 months after operation and at the last follow-up were detected. The postoperative complications were recorded.Results:All the patients were followed up for 6-12 months [(9.7±1.1)months]. The surgical waiting time was 1-4 days [(2.0±0.8)days]. The operative duration was 36-66 minutes [(53.2±9.5)minutes]. All the fractures achieved primary union with a healing period of 3-4 months [(3.2±0.4)months]. At 1, 3 months after operation, the length of the calcaneus [(83.3±3.7)mm and (83.6±3.6)mm], width of the calcaneus [(44.3±5.8)mm and (44.3±5.7)mm], height of the calcaneus [(50.1±3.8)mm and (50.3±3.6)mm], B?hler′s angle [(29.8±2.9)° and (29.8±3.0)°], and Gissane angle [(121.1±6.7)° and (123.9±5.9)°] were significantly improved compared with those before operation [(79.3±4.5)mm, (53.6±4.1)mm, (46.2±3.7)mm, (18.9±3.8)°, (109.0±7.5)°, respectively] ( P<0.05), with no significant differences between those indicators at 1, 3 months after operation ( P>0.05). The VAS scores were (3.2±0.6)points, (1.9±0.5)points, and (1.6±0.3)points at 1, 3 months after operation and at the last follow-up, which were lower than (7.1±0.5)points preoperatively and decreased with the prolongation of follow-up time ( P<0.05). The AOFAS scores were (73.5±6.9)points, (90.1±4.3)points, and (92.0±3.6)points, which were higher than (32.0±4.6)points preoperatively and increased with the follow-up time ( P<0.05). One patient had lateral calcaneal pain after operation, and was alleviated after rehabilitation. No complications such as infection or nonunion were found after operation. Conclusion:The reduction robot system combined with 3M fixator for Sanders types II and III calcaneal fractures demonstrates significant clinical advantages, such as reduced surgical waiting time and operative duration, promoted fracture healing, early alleviated pain, enhanced ankle joint functional recovery, and decreased complication occurrence.
5.Analysis of gene detection results of next-generation sequencing of liquid based cytological specimens of lung adenocarcinoma cavity effusion and evaluation of clinical efficacy
Shuo LIANG ; Yuan WANG ; Zihan SUN ; Jiameng ZHANG ; Xiaoyue XIAO ; Cong WANG ; Yue SUN ; Xinxiang CHANG ; Linlin ZHAO ; Huan ZHAO ; Huiqin GUO ; Zhihui ZHANG
Chinese Journal of Oncology 2025;47(9):905-912
Objective:To analyze the results of next generation sequencing (NGS) gene testing in liquid-based cytological specimens of lung adenocarcinoma cavity and evaluate the clinical efficacy of epidermal growth factor receptor-tyrosine kinase inhibitor (EGFR-TKI) treatment.Methods:Liquid based cytological specimens of 222 cases of lung adenocarcinoma with cavity effusion and 201 cases of metastatic lymph node biopsy were collected. Specimens were obtained from the Cytology Laboratory of the Cancer Hospital of the Chinese Academy of Medical Sciences. The collection period was from January 2018 to December 2022. The results of NGS gene detection were compared. The clinical efficacy of 91 patients treated with EGFR-TKI was evaluated, and the survival curve was analyzed by Kaplan-Meier and other statistical methods.Results:The mutation rates of cancer-related genes detected by NGS were 82.0% (182/222) vs 79.1% (159/201), ( P=0.455) in liquid-based cytological specimens and histological specimens of metastatic lymph node biopsy, respectively. However, the mutation rate of EGFR T790M was significantly higher in cavity effusion than in lymph node biopsy specimens [12.2%(27/222)>3.5%(7/201), P=0.001]. The results of gene mutation were identical in 10 of the 13 cases with cavity effusion and metastatic lymph node biopsy, and the agreement rate of EGFR was 84.6%(11/13). In 3 inconsistent cases, EGFR mutations were detected in 2 cavity effusion cases that were not detected by lymph node biopsy. Results of genetic analysis of fluid-based cytological samples of 91 patients with cavity effusion were evaluated after drug treatment with EGFR-TKI. The mean progression-free survival (PFS) of the patients was 11.4 months (95% CI: 9.9-12.9). The mean PFS of patients harboring EGFR mutation was 12.3 months (95% CI: 10.8-13.9), and the mean PFS of EGFR wild type was 4.1 months (95% CI: 2.1-6.2). Conclusions:The results of NGS gene detection in liquid-based cytological specimens of lung adenocarcinoma patients with cavity effusion show that the PFS time is similar to that of histological specimens after clinical treatment with EGFR-TKI, which proves the reliability of NGS gene detection results in liquid cytological specimens. NGS gene testing appears higher sensitivity in cavity liquid-based samples than in metastatic lymph node samples.
6.Prevalence of common chronic diseases and related factors in HIV-infected persons in Henan Province, 2023
Zhaoyun CHEN ; Qingxia ZHAO ; Xuan YANG ; Meng DENG ; Shuxian ZHAO ; Chunli LIU ; Mingjie HOU ; Zhihui ZHANG ; Qiong LI ; Yan SUN
Chinese Journal of Epidemiology 2025;46(2):258-263
Objective:To understand the prevalence and related factors of three common chronic diseases, hyperlipidemia, hypertension and diabetes in HIV-infected persons.Methods:As of December 2023, HIV-infected persons >15 years old who are receiving antiviral therapy (ART) and follow-up in Henan Province were selected as the study objects. Questionnaires, physical examinations, and blood samples were collected to collect demographic information, ART, body weight, blood lipids, blood pressure, and blood sugar of HIV-infected persons. The logistic regression model was used to analyze the related factors of hyperlipidemia, hypertension and diabetes.Results:Among 4 023 HIV-infected patients, the prevalence rates of hyperlipidemia, hypertension, and diabetes were 64.47% (2 594/4 023), 16.80% (676/4 023), and 10.54% (424/4 023), respectively. Multivariate analysis showed that hyperlipidemia was positively associated with ≥40 years of age, overweight and obesity, two nucleoside reverse transcriptase inhibitors (NRTIs) + proteasome inhibitors (PIs) regimen and two NRTIs+ integrase inhibitor regimen, and negatively associated with low body weight. Hypertension was positively correlated with the age group ≥40 years old, family history of cardiovascular and cerebrovascular diseases, overweight and obesity, ART time ≥0.5 years, and negatively correlated with low body weight. Diabetes was positively associated with age group ≥40 years, family history of cardiovascular and cerebrovascular disease, overweight and obesity, and negatively associated with the use of two NRTIs+PIs treatment regimens.Conclusions:In 2023, the prevalence of hyperlipidemia, hypertension, and diabetes among HIV-infected people in Henan Province was relatively high, and the risk of common chronic diseases among those ≥40 years old, overweight and obese, and those with a family history of cardiovascular and cerebrovascular diseases was also relatively high. It is recommended to strengthen the prevention and management of common chronic diseases among HIV-infected people.
7.The Value of Angiography-derived Microcirculatory Resistance in Predicting Ventricular Remodeling in Patients With ST-segment Elevation Myocardial Infarction
Guanyu LU ; Lei ZHAO ; Keyao HUI ; Zhihui LU ; Lanling WANG ; Hai GAO ; Xiaohai MA
Chinese Circulation Journal 2025;40(2):138-144
Objectives:To explore the correlation between angiography-derived microcirculatory resistance(AMR)and microvascular obstruction(MVO)extent,and AMR's predictive value for ventricular remodeling in patients with ST-segment elevation myocardial infarction(STEMI)post-primary percutaneous coronary intervention(PCI).Methods:This retrospective study included STEMI patients who underwent PCI at Beijing Anzhen Hospital from April 2019 to January 2023.Patients underwent acute and follow-up cardiac magnetic resonance(CMR)examinations 3-7 days and 3 months post-PCI.Ventricular remodeling was defined as a 20%or more increase in left ventricular end-diastolic volume at follow-up.Patients were divided into ventricular remodeling and non-ventricular remodeling groups.Baseline clinical characteristics,AMR values and CMR indices of both groups were compared.Pearson's correlation coefficient was used to explore the correlation between AMR and MVO extent on CMR.Logistic regression and receiver operating characteristic curve analysis were employed to evaluate the predictive performance of AMR for ventricular remodeling.Results:A total of 168 STEMI patients([56.4±11.4]years,139[82.7%]males)were included,with 49(29.2%)in the ventricular remodeling group and 119(70.8%)in the non-ventricular remodeling group.AMR was positively correlated with MVO extent on CMR(r=0.42,P<0.01).Compared to the non-ventricular remodeling group,patients in the ventricular remodeling group exhibited a higher AMR value(3.00[2.56,3.52]mmHg?s/cm vs.2.48[2.20,2.74]mmHg?s/cm,1 mmHg=0.133 kPa,P<0.01).Multivariate logistic analysis showed that AMR was independently associated with ventricular remodeling post-PCI in STEMI patients.For every 0.2 mmHg·s/cm increase in AMR,the risk for ventricular remodeling increased 45.1%(adjusted OR=1.451,95%CI:1.228-1.714,P<0.01).Area under the curve of AMR for predicting ventricular remodeling was 0.769.Conclusions:AMR is positively correlated with MVO extent and is an independent predictor for ventricular remodeling in STEMI patients post-PCI.
8.Interventional Treatment Strategy for Different Types of Pulmonary Artery Lesions in Chronic Thromboembolic Pulmonary Hypertension
Xin LI ; Tao YANG ; Yi ZHANG ; Qin LUO ; Qing ZHAO ; Qixian ZENG ; Sicheng ZHANG ; Zhihui ZHAO ; Zhihong LIU
Chinese Circulation Journal 2025;40(2):190-196
Chronic thromboembolic pulmonary hypertension is characterised by the persistent obstruction of the proximal pulmonary arteries by organized thrombi and peripheral microvascular disease,which can lead to right-sided heart failure and mortality.Pulmonary endarterectomy enables complete removal of visible obstructive elements within the pulmonary arteries and is recommended for operable patients.Nevertheless,over 40%of patients are precluded from pulmonary endarterectomy because of factors such as surgically inaccessible lesions,compromised general health status,or concurrent comorbidities or still with residual pulmonary hypertension after pulmonary endarterectomy.For inoperable patients or those with residual pulmonary hypertension after pulmonary endarterectomy,balloon pulmonary angioplasty is an effective therapeutic option,which could significantly improve the hemodynamic,exercise tolerance and outcome of the patients.With the emerging accumulation of clinical experience and evidence,2022 European Society of Cardiology/European Respiratory Society guidelines of pulmonary hypertension recommend balloon pulmonary angioplasty as an alternative therapeutic option for these patients.However,different types of lesions may have their own lesion characteristics,the strategy and device of balloon pulmonary angioplasty should thus be individually considered for different lesions,in fact,the success rate of treatment and the incidence rate of complications are varied significantly.Therefore,the aim of this review is to comprehensively summarize the existing studies on balloon pulmonary angioplasty treatment strategies for different types of lesions and the management of complications to provide guidance and reference for clinicians.
9.Nanoparticles preparation from ethanol extracts of Euphorbia helioscopia L.and antibacterial mechanism
Zhiying SHI ; Fengting LANG ; Li ZHAO ; Yangyang RU ; Jintao SUN ; Zhihui HAO
Chinese Journal of Veterinary Science 2025;45(9):1990-1998
In order to explore the potential of nanoparticles from ethanol extracts of Euphorbia he-lioscopia L.(ZQNPs)in antibacterial application.In this study,ZQNPs were prepared by the self-assembly method using alcohol extract of Euphorbia helioscopia L.,polylysine and polyethylene glycol 1 000 as raw materials.The morphology and structure of ZQNPs were characterized by transmission electron microscopy,UV-vis spectrophotometer,and Fourier transform infrared spec-troscopy.The growth and biofilm inhibition of ZQNPs against methicillin-resistant Staphylococcus aureus(MRSA)were tested by broth microdilution,crystal violet,and checkerboard assays.The broad-spectrum antibacterial activity and antibacterial activity of ZQNPs against three clinical strains were evaluated by broth microdilution method.Finally,the antibacterial mechanism of ZQNPs was preliminarily explored by morphological observation and soluble protein detection of MRSA.The results showed that ZQNPs were self-assembled and cross-linked multi-faceted spheres with an average diameter of 67 nm.The MIC of ZQNPs against MRSA was 8 mg/L,and the antibacterial effect was much better than that of Euphorbia helioscopia L.mongolicum alcohol extract(MIC>32 mg/L).The time killing curve again showed that ZQNPS had a good antibacteri-al effect on MRSA(8 mg/L)biofilm inhibition rate of 89%,and the antibacterial effect of ZQNPS combined with cefquinome sulfate showed additive results.The mics of ZQNPs against Gram-posi-tive bacteria(S.aureus)and gram-negative bacteria(E.coli)were 16 mg/L and 8 mg/L,respec-tively.The mics of ZQNPS against E.coli clinical strains were stable between 8 and 16 mg/L.The MIC of Salmonella clinical strains was 32-64 mg/L,and the MIC of S.aureus clinical strains was 8-64 mg/L.Preliminary antibacterial mechanism showed that ZQNPs could destroy the membrane structure of MRSA,lead to the release of intracellular substances,and affect the growth of MRSA.These results indicate that ZQNPs have a good antibacterial effect and have potential application value in antimicrobial therapy.
10.Ghrelin-mediated HO-1/PGC-1α signaling pathway regulates mitochondrial oxidative stress to improve traumatic brain injury in rats
Zhihui ZHAO ; Xiuli ZHAI ; Jing WANG ; Min MA ; Xianghua BAI ; Nan SU
Journal of China Medical University 2025;54(4):351-358
Objective To investigate the protective effect of Ghrelin on traumatic brain injury(TBI)in rats based on the HO-1/PGC-1αsignaling pathway.Methods Thirty SPF male rats were randomly divided into sham,TBI,and Ghrelin groups,with 10 rats in each group.A TBI rat model was established using the Feeney free-fall impingement method.The Ghrelin group was injected by caudal vein at a dose of 20 μg/kg 30 min after modeling,while the sham group was not impinged.After 72 h of modeling,the brain tissues of the rats were col-lected,and the brain water content was measured in order to analyze the severity of brain edema.HE staining was used to observe patho-logical changes in brain tissue.The levels of the oxidative stress factors MDA,SOD,and GSH-Px were determined using ELISA.TUNEL staining was used to detect the apoptosis of the brain cells,and the expression levels of Bcl-2,Bax,caspase-3 and caspase-9 in the brain tissues were detected by Western blotting.Mitochondrial reactive oxygen species(mtROS)in the brain tissues were detected by immuno-fluorescence.Mitochondrial function indicators,including mitochondrial mitogen Mfn 1/2,nuclear respiration factor 1(NRF1),and mito-chondrial transcription factor A(TFAM)were detected by Western blotting.The expression levels of HO-1 and PGC-1α in the brain tis-sues of rats in each group were detected by Western blotting.Twenty TBI model rats treated with Ghrelin were divided into Ghrelin+sh-NC and Ghrelin+sh-HMOX1 group with 10 rats in each group.Rats were treated with Ghrelin and injected with knock-down control(adenovirus 2.5 × 109 pfu)or knock-down HMOX1 adenovirus(2.5 × 109 pfu)via tail vein.Western blotting was used to detect the expressions of HO-1,PGC-1 α,Bcl-2,Bax,caspase-3 and caspase-9 in the brain tissues of the two groups.The levels of MDA,SOD and GSH-Px in brain tissue of two groups were detected by ELISA.Results Compared with the sham group,the pathological injury and brain edema in TBI group were aggravated,the number of brain cell apoptosis increased,the levels of oxidative stress factors SOD and GSH-Px decreased,the level of MDA increased,the level of mtROS in brain tissue decreased,the expressions of Bax,caspase-3 and caspase-9 increased,and the expressions of Mfn1/2,NRF1,TFAM,HO-1 and PGC-1α decreased(P<0.05).Compared with TBI group,the pathological damage of brain tissue in Ghrelin group was improved,the brain edema was alleviated,the number of brain cell apoptosis was reduced,the levels of oxidative stress factors SOD and GSH-Px were increased,the level of MDA was decreased,the mtROS in brain tissue was decreased,the expression of Bcl-2 protein was increased,the expressions of Bax,caspase-3 and caspase-9 protein were decreased,and the expressions of Mfn1/2,NRF1,TFAM,HO-1 and PGC-1α were decreased(P<0.05).Compared with Ghrelin+sh-NC group,the expressions of Bax,caspase-3 and caspase-9,MDA in brain tissue of Ghrelin+sh-HMOX1 group increased,while the levels of SOD and GSH-Px decreased(P<0.05).Conclusion Chrelin has protective effect on TBI in rats,and can inhibit brain tissue injury and apoptosis in rats.Its mechanism may be achieved by regulating mitochondrial oxidative stress through HO-1/PGC-1α signaling pathway.

Result Analysis
Print
Save
E-mail