Objective the purpose of this study is to investigate the correlation of RDW and different pathological types of acute appendicitis(AA).Methods According to the pathological classification,AA can be divided into pure,suppurative and gangrenous AA.The RDW values were compared among the 3 kinds of AA patients,and compared with control group.Correlation analysis were performed in patients with the 3 types of AA respectively.ROC was used to analyse RDW′s the diagnosic value for different types of AA.Results In patients with pure and suppurative AA,RDW values were statistically different from those in control group(P <0.05),and weren′t correlated with WBC count(P >0.05);while in patients with gangrenous AA,RDW values were not statistically different from those in control group,and were positively correlated with WBC count(r=0.646,P <0.05).Conclusion The decline RDW is correlated with simple and suppurative AA,and can provide some reference for the diagnosis of simple and suppurative AA,but not be used as diagnostic indicator because the sample quantity is not enough in the study.

By co-culturing humm mesenchymal stem cells (hMSCs) and human umbilical rein endothelial cells (HUVECs) under hypoxia and creating a microenvironment similar to that of transplanted hMSCs for the treatment of avascular ni ANFH, the effect of hMSCs on survival, apoptosis, migration and angiogenesis of human umbilical vein endothelial cells (HUVECs) under the hypoxic condition were investigated in vitro. hMSCs and HUVECs were cultured and identified in vitro. Three kinds of conditioned media, CdM-CdM(NOR), CdM-CdM(HYP) and HUVEC-CdM(HYP) were prepared. HUVECs were cultured with these conditioned media under hypoxia. The survival rate, apoptosis rate, migration and angiogenesis of HUVECs were respectively detected by CCK-8, flow cytometry, Transwell and tube formation assay. The content of SDF-1α, VEGF and IL-6 in CdM was determined by ELISA. Our results showed that hMSCs and HUVECs were cultured and identified successfully. Compared with MSC-CdM(NOR) and HUVEC-CdM(HYP) groups, the survival rate, migration and angiogenesis of HUVECs in MSC-CdM(HYP) group were significantly increased while the apoptosis rate was declined (P<0.05). Moreover, the expression of SDF-1α, VEGF and IL-6 in MSC-CdM(HYP) group was up-regulated. Under hypoxia, the apoptosis of HUVECs was inhibited while survival, migration and angiogenesis were improved by co-culture of hMSCs and HUVECs. The underlying mechanism may be that hMSCs could secrete a number of cytokines and improve niche, which might be helpful in the treatment of femoral head necrosis.

In this study, 38 experimental subjects of diabetes mellitus were given pectin 25g extra per day orally under carefully controlled dietary plan for six weeks. Another 38 cases were selected at random as control group.Pre- and posttreatrnent, blood and urine sugar and serum insulin of each subject were measured and compared. The results were: 1) the blood sugar dropped markedly as compared with that of pretreatment (p05). 2) sugar in urine decreased evidently in contrast with control group, but no difference was seen in the volume of urine between the two groups. 3) serum insulin levels dropped significantly when compared with control group (p

The clinical application of arthroscopic minimally invasive treatment of shoulder joint disease technology has become a routine,and it has been widely carried out around the world.Compared with the traditional open surgery,it only needs to establish a few channels in the shoulder and then the diagnosis and treatment of the structure under the acromion and glenoid joint internal lesions can be completed through the arthroscopic technique under direct vision,of course,including local collection of pathological specimens.Shoulder arthroscopic surgery has the advantages of simple operation technique,small economic burden of patients,small tissue trauma,quick recovery and high accuracy of disease diagnosis.At present,there are two main options for shoulder arthroscopy:the beach chair position (BCP) and the lateral decubitus position (LDP).The choice of surgical position for surgeons is closely related to the intraoperative operation,the risk of complications,the efficacy of surgery,and the cost of setting the posture.Shoulder arthroscopy of these two positions have their own advantages and disadvantages:in the BCP,the surgeon gets a better anatomical operation experience,if necessary,can be converted into open surgery at any time.Without continuous traction,upper limb nerve and vascular damage caused by traction can be avoid.But the incidence of cerebral ischemic events in patients may increase in the BCP.There is also possibility of the nerve damage of the pillow small nerve,great auricular nerve,lateral femoral cutaneous nerve and other nerves.In theory the risk of air embolism in the patients will increase in the BCP,and the cost of setting the position is also higher than the LDP.While in the LDP due to the patient's forearm continuous traction,the surgeon can get a more extensive operating space,and the occurrence of cerebral ischemic events is very rare.In the treatment of anterior shoulder instability after shoulder arthroscopic surgery,there is a lower recurrence rate in the LDP.The cost of setting the position is also significantly lower than the BCP.Of course,the disadvantages of the LDP is also obvious.In the LDP,the brachial plexus and other nerves or vascular injury may increase due to the continuous traction of the forearm.Meanwhile sustained traction in the LDP is also a risk factor for thrombosis,and so on.Therefore,there is still a debate about the optimal location of the shoulder arthroscopy.Many clinicians choose shoulder arthroscopic position based on their own experience and habits.

Objective To evaluate the efficacy and safety of neurokinin1 (NK1) receptor antagonist aprepitant combined with prednisone and tropisetron in prevention of nausea and vomiting (CINV) induced by R-CHOP or CHOP regimen. Methods A total of 90 patients with diffuse large B-cell lymphoma (DLBCL) who accepted R-CHOP or CHOP regimen in the People''s Hospital of Tianjin from October 2015 to January 2016 were divided into aprepitant group (45 cases) and the control group (45 cases) according to the random number table. In aprepitant group, day 1: aprepitant 125 mg 1 h before chemotherapy, prednison 100 mg, tropisetron 10 mg, and tropisetron 5 mg 2 hours after chemotherapy;day 2-3:aprepitant 80 mg and prednison 100 mg, tropisetron 10 mg; day 4-5: prednison 100 mg. In the control group, day 1: prednison 100 mg 1 h before chemotherapy, tropisetron 10 mg, and tropisetron 5 mg 2 h after chemotherapy; days 2-3: prednison 100 mg, tropisetron 10 mg; day 4-5: prednison 100 mg. Data on nausea, vomiting and remission treatment were collected every day. The complete remission (CR) rates of CINV without vomiting and remission drugs in the whole cycle were recorded. Functional living index-emesis questionnaire (FILE) was used to assess the effect of CINV on the life quality of the patients. Results CR in aprepitant group was higher than that in the control group (77.8 ％ vs. 55.6 ％, χ2= 5.000, P= 0.025). The rate of no vomiting in aprepitant regimen was higher than that in the control regimen (82.2 ％ vs. 62.2 ％, χ2 = 4.486, P= 0.034). The average scores of FILE between the two groups were (113 ±10) and (100 ±11) scores respectively, and there was a significant difference (t=12.437, P<0.001). The related adverse reactions of vomiting-stopping drugs in both groups had no statistical difference. Conclusion The aprepitant combined with tropisetron and prednisone can improve effectively nausea and vomiting induced by R-CHOP or CHOP chemotherapy regimen for DLBCL patients.

By co-culturing humm mesenchymal stem cells (hMSCs) and human umbilical rein endothelial cells (HUVECs) under hypoxia and creating a microenvironment similar to that of transplanted hMSCs for the treatment of avascular ni ANFH,the effect of hMSCs on survival,apoptosis,migration and angiogenesis of human umbilical vein endothelial cells (HUVECs) under the hypoxic condition were investigated in vitro.hMSCs and HUVECs were cultured and identified in vitro.Three kinds of conditioned media,CdM-CdMNOR,CdM-CdMHYP and HUVEC-CdMHYP were prepared.HUVECs were cultured with these conditioned media under hypoxia.The survival rate,apoptosis rate,migration and angiogenesis of HUVECs were respectively detected by CCK-8,flow cytometry,Transwell and tube formation assay.The content of SDF-1α,VEGF and IL-6 in CdM was determined by ELISA.Our results showed that hMSCs and HUVECs were cultured and identified successfully.Compared with MSC-CdMNOR and HUVEC-CdMHYP groups,the survival rate,migration and angiogenesis of HUVECs in MSC-CdMHYP group were significantly increased while the apoptosis rate was declined (P＜0.05).Moreover,the expression of SDF-1a VEGF and IL-6 in MSC-CdMHYP group was up-regulated.Under hypoxia,the apoptosis of HUVECs was inhibited while survival,migration and angiogenesis were improved by co-culture of hMSCs and HUVECs.The underlying mechanism may be that hMSCs could secrete a number of cytokines and improve niche,which might be helpful in the treatment of femoral head necrosis.

Objective This study aims to explore and evaluate internal fixation with double titanium plates in mandibular condylar fracture. Methods Twenty-eight patients with mandibular condylar fracture were treated by rigid internal fixation with double titanium plates. The effects of the treatment on occlusion, mouth opening, and titanium plate rupture were evaluated by pantomograms or 3D CT. Results Good retention was observed in all 28 patients with mandibular condylar fracture. Occlusion and mouth opening returned to normal. None of the patients experienced titanium plate rupture or fracture displacement. Two patients suffered from mild facial nerve injury but recovered within 3 months after neurotrophic drug treatment. Two patients suffered from temporo-mandibular joint disease but improved after plate removal. Conclusion Rigid internal fixation with double titanium plates is an ideal treatment for mandibular condylar fracture.

Objective: To understand the prevalence of school bullying and the comorbidity of anxiety and depressive symptoms among middle school students and their association, so as to provide a basis for developing related intervention strategies. Methods: From September to December 2023, a multistage random cluster sampling was employed to select 107 851 middle school students across 104 counties in Anhui Province. The Center for Epidemiological Studies Depression Scale (CES-D) and the Generalized Anxiety Disorder-7 (GAD-7) Scale were used to assess depressive and anxiety symptoms. Logistic regression analysis was utilized to examine the correlations between experiences of school bullying and the comorbidity of anxiety and depressive symptoms. Results: The findings revealed that 2.80% of middle school students had experienced school bullying in the past 30 days. Additionally, 27.03% exhibited potential symptoms of depression, 8.94% showed signs of anxiety symptom, and the comorbidity rate of anxiety and depressive symptoms was 8.04%. Logistic regression analysis showed that statistically significant correlations were identified between experiences of school bullying and increased risks of depressive symptoms (OR=6.42, 95%CI=5.93-6.94, P<0.01), anxiety symptoms (OR=5.94, 95%CI=5.47-6.44, P<0.01), and their comorbidity (OR=6.38, 95%CI=5.88-6.93, P<0.01). Compared with those who did not suffer from school bullying, junior high school students, ordinary senior high school students, vocational senior high school students, boys and girls who suffered from school bullying all had increased risks of comorbidity of anxiety and depressive symptoms (OR=7.25, 5.55, 4.80, 6.42, 6.27, P＜0.01). Conclusions The study underscores the significant impact of school bullying on increasing the risk of comorbidity of anxiety and depressive symptoms among middle school students. It is important to pay attention to the psychological health of bullied students and implement timely psychological intervention measures.

Venous thromboembolism (VTE) is a common complication of hip and knee arthroplasty and of many major orthopedic surgeries.VTE mainly includes two aspects,ie,deep vein thrombosis (DVT) and pulmonary embolism (PE).Symptomatic PE is likely to endanger patients' life,resulting in irreversible severe consequences.With the return of venous blood,DVT may also fall off at any time,forming a new PE.Therefore,the prevention of VTE in large orthopedic surgeries has been highly valued by scholars worldwide.However,the problem of VTE after arthroscopic surgery has not drawn much attention from clinicians.Researchers have not reached a consensus on whether routine anticoagulation therapy is required after surgery because of VTE's low incidence and discrepancy among various studies (0.42％-17.9％).With a large number of knee arthroscopy being performed per year,the postoperative VTE incidence can not be ignored.For these reasons,some scholars have suggested that patients after knee arthroscopy should be stratified and that patients with a higher risk of postoperative VTE need to be given anticoagulant therapy.Risk factors for VTE after knee arthroscopy may have effects on the clinical treatment of patients.Therefore,a review of the literature to explore the possible risk factors for postoperative VTE was conducted.