Objective To evaluate the clinical value of epicardial echocardiographic examination in cardiac valve surgery.Methods Epicardial echocardiography were performed in 46 patients undergoing valvular plasty or valvular replacement surgery to estimate the function of valve and left ventricle and residual shunt during cardiac surgery.Results Twelve cases of 46(26.1％)showed abnormality during cardiac surgery.Two cases of 15 patients performed valvuloplasty were changed to valvular replacement because of remarkable regurgitation of native valves.There was 1 case of periprosthetic leakage,3 cases of left atrial appendage thrombus,1 case of patent foramen ovale and 5 cases of low ejection of left ventricle in all 31 cases of valvular replacement.Conclusions Epicardial echocardiograpyc examination is an effective examination in cardiac valve surgery with clearly image,simplicity operation and promptness.

Objective Cancer radio-therapy may induce bone damage of the patients.collagen type I gene expressions in osteoblast after radiation indicates the influence of radiation on the function of early and late osteoblast.Methods Bone marrow stromal cells were differentiated into osteoblasts in vitro.and the characteristics was indentified.The collagen type I expressions in early and late stage osteoblasts exposed to 1～4Gy radiation were examined by RT-PCR.Results Compared to control group,collagen type I gene expressions increased in early osteoblast after 1～3 Gy radiation (P＜0.05),while the gene expressions in late osteoblast that cultured 10 days decreased.Collagen type I gene expression in late stage ostoblast after 4 Gy irradiation was greatly higher than that in early stage osteoblast (P＜0.01).Conclusion After 1～3 Gy irradiation,the collagen type I expression in early osteoblast was enhanced,indicating the increased ability of bone formation.The exposure to 1～3 Gy decreased collagen type I expression in late osteoblast and weakened the ability of bone formation.The result of high expression of collagen type I in late osteoblast after 4 Gy irradiation may be the manifestation of compensatory function.

Objective To study the influence of irradiation on the osteoblast function by the gene expression changes of RANKL and OPG.Methods Bone marrow stromal cells were induced to develop into early and mature osteoblasts in vitro.The characterization of osteoblasts was indentified by ALP staining.The RANKL and OPG mRNA levels in early and mature osteoblasts, which exposed to 0 -4 Gy radiation were determined by RT-PCR.Results Bone marrow stromal cells had been induced to early and mature osteoblasts by osteoblast differentiation medium in vitro.In early stage of osteoblast, RANKL mRNA expression levels treated with 1Gy irradiation was 2.83-fold higher than those other irradiation dosage groups.The RANKL mRNA expression levels of each group in early stage of osteoblasts were significantly higher than those in the mature counterpart ( t = 8.34 - 103.57, P ＜ 0.05 ).The ratio of RANKL/OPG mRNA was obviously greater in early osteoblast compared with the mature cells ( t = 2.84 - 20.99, P ＜0.05 ), and it was the highest in 1Gy irradiation treated early osteoblast.Conclusions Radiation exposure of the early osteoblasts promotes osteoclasts function and results in the bone loss.

Objective:To explore the effect of multidisciplinary collaboration（MDT）mode on perioperative nursing of chronic ulcer of diabetes mellitus patients following lower extremity trauma.Methods:A retrospective case-control study was conducted to analyze the clinical data of 122 diabetes mellitus patients combined with chronic ulcer following lower extremity trauma admitted to Sir Run Run Shaw Hospital affiliated to Zhejiang University School of Medicine from January 2015 to December 2019. There were 58 males and 64 females at age of 40-76 years［（56.0 ± 4.7）years］. The wounds were located at the heel in 10 patients，at the lateral ankle in 12，at the toe in 22，at the calf in 59 and at the thigh in 19. Sixty patients received MDT care（collaborative care group），and 62 patients received traditional care（traditional care group）. Visual analogue scale（VAS）and level of fasting plasma glucose were measured at days 1 and 3 postoperatively and on the day of discharge. Mental status of the patients was evaluated using self-evaluation of anxiety scale（SAS）and self-rating depression scale（SDS）after nursing. Area and depth of wounds was detected at postoperative 2 weeks and 1 month，and level of fasting glucose was measured again within 1 month after operation. The rate of amputation，incidence of debridement and direct suture rate were documented while hospitalized again at postoperative 1 month.Results:All patients were followed up for 0.5-3 months［（1.2 ± 0.7）months］. VAS was 1.0（1.0，2.0）points，1.0（0.0，1.0）points and 1.0（0.0，1.0）points in collaborative care group at days 1 and 3 postoperatively and on the day of discharge，compared to 2.0（2.0，2.3）points，2.0（2.0，2.0）points and 1.0（1.0，2.0）points in traditional care group（ P < 0.05）. Level of fasting blood glucose was（7.2 ± 0.8）mmol/L，（6.9 ± 0.8）mmol/L and（6.9 ± 0.7）mmol/L in collaborative care group on days 1 and 3 postoperatively and on the day of discharge，compared to（7.8 ± 0.8）mmol/L，（7.8 ± 0.8）mmol/L and（7.7 ± 0.9）mmol/L in traditional care group（ P < 0.05）. Scores of SAS and SDS were（8.4 ± 0.8）points and（11.2 ± 1.0）points in collaborative care group after nursing，compared to（8.7 ± 0.7）points and（12.3 ± 1.0）points in traditional care group（ P < 0.05）. Area and depth of wounds were（29.4 ± 3.9）cm 2 and（1.4 ± 0.4）cm in collaborative care group at postoprative 2 weeks，compared to（33.3 ± 3.6）cm 2 and（1.5 ± 0.5）cm in traditional care group（ P < 0.05）. Area and depth of wounds were（24.5 ± 3.8）cm 2 and（0.9 ± 0.4）cm in collaborative care group at postoprative 1 month，compared to（30.6 ± 4.8）cm 2 and（1.2 ± 0.5）cm in traditional care group（ P < 0.05）. Level of fasting blood glucose in collaborative care group was significantly lower than that in traditional care group at postoprative 1 month（ P < 0.05）. During hospital re-admission 1 month after operation，rate of amputation and incidence of re-debridement were 5%（3/60）and 7%（4/60）in collaborative care group，significantly lower than those in traditional care group［18%（11/62），22%（13/62）］（ P < 0.05），and direct repair suture rate was 88%（53/60）in collaborative care group，significantly higher than that in traditional care group［61%（38/62）］（ P < 0.05）. Conclusion:For chronic ulcer of diabetes mellitus patients following lower extremity trauma，MDT model is superior over traditional nursing for alleviated pain，controlled blood glucose，improved psychological state，promoted wound healing and reduced rate of amputation and incidence of re-debridement.

Objective To explore the clinical efficacy of raltitrexed combined with oxaliplatin in the treatment of patients with advanced colorectal cancer (CRC) and its influence on tumor necrosis factor-α (TNF-α) and interleukin-2 (IL-2).Methods A total of 69 patients with advanced CRC were selected and randomly divided into treatment group (n =35) and control group (n =34).Treatment group was treated with raltitrexed combined with oxaliplatin,while control group was treated with capecitabine combined with oxaliplatin.Short-and long-term clinical efficacy as well as the changes of levels of TNF-α and IL-2 before and 3 weeks after treatment were compared,and the occurrence rates of toxic and adverse reactions were recorded during treatment.Results Treatment group was slightly higher than control group in clinical efficacy and disease control rate (P ＞0.05),and there was also no significant difference between two groups in time to progression (TFP)and median overall survival time (OS) (P ＞ 0.05).After treatment for 3 weeks,levels of TNF-α and IL-2 increased in both groups (P ＜ 0.01),which increased more significantly in treatment group than control group (P ＜ 0.01).Treatment group was significantly lower in the rates of diarrhea,nausea and vomiting,and neutropenia,bur was prominently higher in the increase of transaminase than control group (P ＜ 0.05).Conclusion Rahitrexed combined with oxaliplatin has similar clinical efficacy to capecitabine combined with oxaliplatin in the treatment of advanced CRC,but the former is mild in toxic and adverse reactions.

Objective To explore the clinical efficacy of raltitrexed combined with oxaliplatin in the treatment of patients with advanced colorectal cancer (CRC) and its influence on tumor necrosis factor-α (TNF-α) and interleukin-2 (IL-2).Methods A total of 69 patients with advanced CRC were selected and randomly divided into treatment group (n =35) and control group (n =34).Treatment group was treated with raltitrexed combined with oxaliplatin,while control group was treated with capecitabine combined with oxaliplatin.Short-and long-term clinical efficacy as well as the changes of levels of TNF-α and IL-2 before and 3 weeks after treatment were compared,and the occurrence rates of toxic and adverse reactions were recorded during treatment.Results Treatment group was slightly higher than control group in clinical efficacy and disease control rate (P ＞0.05),and there was also no significant difference between two groups in time to progression (TFP)and median overall survival time (OS) (P ＞ 0.05).After treatment for 3 weeks,levels of TNF-α and IL-2 increased in both groups (P ＜ 0.01),which increased more significantly in treatment group than control group (P ＜ 0.01).Treatment group was significantly lower in the rates of diarrhea,nausea and vomiting,and neutropenia,bur was prominently higher in the increase of transaminase than control group (P ＜ 0.05).Conclusion Rahitrexed combined with oxaliplatin has similar clinical efficacy to capecitabine combined with oxaliplatin in the treatment of advanced CRC,but the former is mild in toxic and adverse reactions.

Objective:To investigate the distribution of HIV-1 genotypes and drug resistance in newly diagnosed HIV-1 patients in Baoding in 2020.Methods:A self-developed method was used to amplify the pol gene sequence of HIV-1, and the sequencing results were analyzed by phylogenetic analysis and compared with the Stanford drug resistance database to determine the HIV-1 subtypes and gene mutations. Results:A total of 96 patients with HIV-1 infection were recruited in this study, and 83 pol gene sequences were successfully obtained. In the study population, 88 (91.7%) were male with an average age of 39 years and 54 (56.3%) were married. Most of the patients were infected through sexual contact (95.8%, 92/96), and 75.0% (72/96) were through homosexual transmission. Phylogenetic analysis showed that various HIV-1 subtypes were detected and among them, CRF01_AE (51.8%, 43/83), CRF07_BC (24.1%, 20/83) and B subtype (10.8%, 9/83) were the most epidemic strains. Moreover, the subtypes of newly identified recombinant strains in recent years accounted for 13.3% (11/83). Drug resistance test results showed that the pre-treatment drug resistance rate in newly diagnosed HIV-1 patients was 8.4% (7/83), and the drug resistance rates to protease inhibitor (PIs), non-nucleoside reverse transcriptase inhibitors (NNRTIs) and integrase inhibitors (INIs) were 3.6% (3/83), 1.2% (1/83) and 3.6% (3/83), respectively. Conclusions:The HIV-1 subtypes in the newly diagnosed population in Baoding in 2020 were complex and diverse. There were many unique recombinant strains and drug-resistant strains. Therefore, it was necessary to strengthen drug resistance monitoring as well as the prevention and control of HIV-1 infection in this area.

Objective To explore the application value of echocardiography in the differential diagnosis of transthyretin cardiac amyloidosis(ATTR-CA)and immunoglobulin light chain cardiac amyloidosis(AL-CA).Methods We conducted a retrospective analysis of echocardiographic parameters of 50 confirmed CA patients diagnosed between November 2021 and January 2024 at The First Affiliated Hospital of Xi'an Jiaotong University,including 6 cases of ATTR and 44 cases of AL.Parameters that could potentially distinguish between the two subtypes were selected using t-tests and x2 tests,and the diagnostic capabilities of these parameters for the two subtypes were analyzed using receiver operating characteristic(ROC)curves.Results There were no statistically significant differences in general characteristics,global longitudinal strain(GLS),ratio of apical to basal strain,ejection fraction to GLS ratio(EFSR),maximum thickness of left ventricular myocardium,relative thickness of left ventricular wall,presence of thickened atrioventricular valves,or presence of enlarged atria between ATTR and AL groups(P＞0.05).The interventricular septal thickness was greater than in ATTR group than in AL group(P＜0.05),and the E/e'ratio(ratio of spectral Doppler early diastolic peak velocity to tissue Doppler early diastolic peak velocity)was greater in ATTR group than in AL group(P＜0.05).ROC curve analysis showed that the areas under the curve for distinguishing between the two subtypes based on interventricular septal thickness and E/e'ratio were 0.891(95％CI:0.792-0.991)and 0.826(95％CI:0.698-0.955),respectively,with a sensitivity of 100.00％and specificity of 95.24％for combined diagnosis.Conclusion Echocardiographic parameters,including E/e'ratio and interventricular septal thickness,may have clinical significance in distinguishing between the two main subtypes of CA in patients.

Objective To identify the plasma miRNAs which are differentially expressed in the patients with traumatic avascular necrosis of the femoral head by means of high-throughput screening so as to provide data for further research into the pathogenesis of traumatic avascular necrosis of the femoral head.Methods We selected 10 patients with femoral neck fracture who had been treated from January to April 2015 for traumatic avascular necrosis of the femoral head following manual reduction and internal fixation with percutaneous hollow screws (necrosis group) and another contemporary age-matched 10 patients with femoral neck fracture who had been treated in the similar way but did not develop traumatic avascular necrosis of the femoral head for over 2 years (control group).After the peripheral blood was obtained from the 20 patients,Axon GenePix 4000B chip scanner was used for peripheral blood chip screening to identify the miRNAs which were differentially expressed.QPCR technique was used to verify the top 5 miRNAs which were significantly up-regulated and the top 5 miRNAs which were significantly down-regulated.Results The Harris score for the necrosis group was significantly lower than that for the control group while the Visual Analog Scale score for the former significantly higher than that for the latter (P ＜ 0.05).There were no significant differences between the 2 groups in general data (P ＞ 0.05).In comparison of the 2 groups,the chip screening identified 95 miRNAs which were significantly up-regulated and 413 miRNAs which were significantly down-regulated.The "volcano" analysis screened out 147 miRNAs differentially expressed of which 35 were up-regulated genes and 112 down-regulated genes.Of the 10 genes selected,8 were found in line with the results of microarray screening:hsa-miR-93-5p,hsa-let-7i-5p,hsa-miR-320a,hsa-miR-25-3p,hsa-miR-16-2-3p,hsa-miR-122-5p,hsa-miR-4711-3p and hsa-miR-3191-5p.Conclusion This study indentified 8 differentially expressed miRNAs associated with traumatic osteonecrosis of the femoral head,providing data for further study.

BACKGROUND:The impact of the endometrium's structure and spiral artery blood flow parameters on the pregnancy rate of artificial insemination by husband remains unclear.This study identified the independent factors and constructed a prediction model with good clinical application efficacy after calibration of other confounding factors. OBJECTIVE:To construct and validate a clinical pregnancy prediction model for artificial insemination by husband based on endometrial structure and uterine spiral artery blood flow parameters. METHODS:A retrospective analysis was conducted on 1 299 patients who underwent artificial insemination by husband treatment at Changzhou Maternal and Child Health Hospital from January 2017 to January 2021.The non-pregnancy group consisted of 1 182 patients,while the pregnancy group included 117 patients.Out of these patients,93 cases were successfully matched between the pregnancy and non-pregnancy groups using a 1∶1 propensity score matching method.Single-factor and multi-factor analyses were used to screen the endometrial structure and uterine spiral artery blood flow parameters to determine their influence on artificial insemination by husband outcomes.The optimal cutoff value was established for each independent influencing factor through receiver operating curve analysis and their risk trend affecting artificial insemination by husband pregnancy outcomes was analyzed using a restricted cubic spline.The clinical efficacy of this combined forecast model was tested by using clinical decision curve and clinical influence curve methods. RESULTS AND CONCLUSION:(1)There was no statistical significance in non-endometrial factors between the pregnancy group and the non-pregnancy group,and the data had a good balance by propensity score matching(P>0.05).(2)Single-factor analysis identified several subendometrial parameters as significant influencing factors of artificial insemination by husband pregnancy outcomes,including vascularization index,flow index,vascular flow index,resistance index,pulsatility index,maximum systolic velocity/end-diastolic velocity,thickness of average junction zone and maximum junction zone from the basal endometrium to the outer myometrium inner layer(P<0.05).(3)Multivariate logistic regression analysis revealed that thickness of average junction zone,pulsatility index,and vascular flow index were independent influencing factors of pregnancy outcomes of artificial insemination by husband,vascular flow index>thickness of average junction zone>pulsatility index.(4)Receiver operating characteristic curve analysis indicated that the area under receiver operating characteristic curve of vascular flow index was 0.704(0.629,0.779),and the optimal cutoff value was 6.26;the area under receiver operating characteristic curve of thickness of average junction zone was 0.660(0.582,0.739),and the optimal cutoff value was 6.38;the area under receiver operating characteristic curve of pulsatility index was 0.642(0.563,0.721),and the optimal cutoff value was 1.18.(5)The restricted cubic spline analysis revealed that artificial insemination by husband pregnancy outcomes were significantly positively affected when the vascular flow index was>6.24 or the thickness of average junction zone was≤6.55 mm,while a negative risk was associated with pulsatility index>1.27.(6)The clinical decision curve and clinical influence curve analyses exhibited that the combined prediction model had the maximum clinical net benefit at the threshold probability value of 0.17-0.93,and the ratio of loss to benefit was consistently less than 1 in the threshold probability range,indicating that the model had good clinical efficacy.(7)It is concluded that after adjusting for other confounding factors outside of the endometrium using propensity score matching and multifactorial logistic regression,the thickness of average junction zone,pulsatility index and vascular flow index were independent factors that influenced pregnancy outcomes of artificial insemination by husband.Through determining their optimal cutoff values and assessing their risk trends,it was confirmed that the combined prediction model had good predictive value and clinical efficacy.