Objective To explore the clinical manifestation and laboratory examination of chronic diarrhea in children with acquired immunodeficiency syndrome(AIDS) and analyze the reasons that causes the chronic diarrhea in children.Methods Clinical data of 7 patients (male 4 cases,famale 3 cases)with AIDS with manifestation of chronic diarrhea among the 17 cases were diagnosed as AIDS in Beijing children′s hospital from Jan.1999 to Dec.2006.The time of diarrhea,degree of dinrrhea,characteristic of stool,accompaniment symptom,laboratory examination were retrospectively analyzed.Results The average onset age was 6 years old(from 2-9 years old).The average time of diarrhea was 6 months(from 1-16 months).Four cases main complained with chronic diarrhea,3 cases came to the hospital because of fever,cough and wasting;6 cases with diarrhea,7 cases with malnutrition and anemia,5 cases accompanied hypokalemia and metabolic acidosis,6 cases had delay in growth and development,2 cases with abnormal stool routine exam,1 case with positive stool culture of fungi.All patients were with lower CD4,5 cases with lower CD4/CD8.Conclusions Chronic diarrhea is a common symptom in children with AIDS,and usually accompanied by obvious delay in growth and development,malnutrition and anemia,the reasons that causes the chronic diarrhea are consi-dered to be related with both the opportunistic infection and HIV infection.

Objective To study clinicopathologic features of ALK-positive large B-cell lymphoma.Methods The clinical data,histopathological characteristics,immunophenotype and fluorescence in situ hybridization (FISH) result of a patient with ALK-positive large B-cell lymphoma were analyzed and discussed combined with related literatures.Results A 30-years-old male patients with the left neck lymphadenectasis was studied.Histological evaluation revealed the tumor grew in sheets in the nodal,with round nuclei,dispersed chromatin,a single prominent central nucleolus and moderate amounts of eosinophilic to amphophilic cytoplasm.The neoplastic cells exhibited immunoblastic/plasmablastic morphology.Immunohistochemistry measurement showed that the tumor cells were marked positively by CD138,ALK-1,CD45RO,CD4,Perforin,CD117 and Kappa proteins,while negatively by CD3,CD8,CD20,CD30,CD38,CD57,CD79a,Pax-5,EMA and AE1/AE3 proteins.FISH test demonstrated the presence of ALK gene translocation.The patient was given 4 cycles of CHOP chemotherapy after surgery.However,the conditions deteriorated after 4 months.Now the patient continued to receive treatment.Conclusion ALK-positive large B-cell lymphoma represents a distinct variant of diffuse large B-cell lymphoma,and the tumor has special histological features along with a distinct immunophenotype and ALK gene rearrangement.

18 years of age were enrolled. The blood pressure measurements at the wrist were compared with the results obtained by auscultatory measurement on left upper arm. Both measurements were taken 3 times in each person. A total 273 measurements were obtained in 91 participants. The evaluation of the accuracy was assessed by 2 statistical methods. (1)The differences between the 2 devices for a given measurement. (2) The differences between the 2 devices for a given person. Results Method 1 showed the sample mean errors and standard deviation of errors were 0.5?7.1 mm Hg for systolic blood pressure(SBP) and -1.6?6.1 mm Hg for diastolic blood pressure(DBP). Method 2 showed they were 0.5?6.1 mm Hg for SBP and -1.6?5.3 mm Hg for DBP. Blood pressure level and the wrist circumferences had no influence on the measurement errors. Conclusion The HEM-6000 wrist blood pressure device apparently met the AAMI criteria and is valid for patient self-measurement.

Sphingosine kinase (SphK), sphingosine-1-phosphate (S1P) and S1P receptor (S1PR) are involved in the tumor biological processes such as tumor cell proliferation and migration, and play an important role in the development of cancer. In recent years, researchers have increasingly focused on the interaction between cancer cells and the tumor microenvironment. The tumor microenvironment is genetically stable and can be induced to an antitumor phenotype, which has significant therapeutic advantages. Studies have shown that SphK/S1P/S1PR can regulate multiple aspects of the tumor microenvironment. This review summarizes the effects of SphK and S1P/S1PR signaling on the tumor microenvironment from four perspectives: tumor immune microenvironment, cancer associated fibroblasts, tumor angiogenesis and tumor hypoxic microenvironment, and also outlines potential drug research related to these signal molecules, aiming to elucidate the role of SphK/S1P/S1PR in tumor occurrence and development and provide new ideas for the research of anti-tumor drugs.

Adult ; Arthritis ; diagnosis ; diagnostic imaging ; Female ; Humans ; Radiography ; Tuberculosis, Lymph Node ; diagnosis ; diagnostic imaging ; Tuberculosis, Osteoarticular ; diagnosis ; diagnostic imaging ; Ultrasonography

Objective To investigate the effect of tea polyphenols on global cerebral ischemia reperfusion injury in rats.Method Forty-five pathogen-free male SD rats weighing 180-220 g were randomly divided into 3 groups( n =15 each):sham operation group (group S),cerebral ischemia reperfusion group (group IR) and tea polyphenols group (group TP).Global cerebral ischemia reperfusion injury was establish by four-vessel occlusion method.At 24 h of reperfusion,five rats were chosen and Evan's blue(EB) was injected iv,and then sacrificed and brain was removed for determination of EB content; another five rats were sacrificed and brain was removed for determination of water content; five rats were chosen for Morris water maze test.Result Compared with group S,EB content and water content in brain tissue were increased in groups IR and 'rP,and escape latency was prolonged,frequency of crossing the original platform was reduced in group IR ( P ＜ 0.05 ).Compared with group IR,EB content and water content in brain tissue were decreased,and escape latency was shortened,frequency of crossing the original platform was increased in group Tp ( P ＜ 0.05).Conclusion Tea polyphenols can attenuate global cerebral ischemia reperfusion injury in rats.

AIM: To observe the influence of the selective decontamination of the digestive tract (SDD) and caecosomy/colonic irrigation on gut endotoxin/bacteria translocation following acute severe pancreatitis (ASP). METHODS: Twenty three pigs weighing 16-22 kg were divided into four groups. Group I (n=5): sham-control; Group Ⅱ (n=6): ASP-control; Group Ⅲ (n=6): gntamicin [(8.55?10~5?5.70?10~4) units/time] and nystatin [(1.37?10~5?9.00?10~3) units/time] were fed orally every 8 h for 1 week before the induction of ASP; Group Ⅳ (n=6): caecostomy was performed before the induction of ASP. ASP was induced by infecting 1 mL/kg BW of combined solution of 5% sodium taurocholate and (8-10)?10~6 BAEE units/L of trypsin into pancreas via pancreatic duct. Systemic plasma endotoxin levels were quantified by the chromogenic limulus amebocyte lysate (LAL) technique. Specimens of tissue from mesenteriolum and mesocolon lymph nodes, lung, lymph nodes in hilus pulmonis, pancreas and the samples of both portal and systemic blood were collected before and at 72 h following ASP and cultured for aerobic as well as anaerobic bacteria growth. Positive specimens were subcultured and the bacteria identified by standard procedure. RESULTS: Preventive SDD not only effectively reduced the amount of bacteria in stool (P

Brucellosis ; diagnosis ; drug therapy ; Child ; Child, Preschool ; Female ; Humans ; Male

Objective To investigate the protein expression and genetic alterations of c-myc in primary systemic anaplastic large cell lymphoma (ALCL) and discuss its relationship with clinicopathologic features and immunophenotypes.Methods 87 cases of ALCL were selected.Immunohistochemical method was used to detect the protein expression of c-myc,ALK,CD3,CD10,CD20,CD30 and EMA.c-myc and ALK genetic alterations were detected by using fluorescence in situ hybridization (FlSH).The interrelationships between protein expression,genetic alterations and clinicopathological parameters were analysed statistically.Results Immunohistochemical results:of 87 cases,ALK protein was expressed in 54 cases (62.1％).c-myc protein was expressed in 27 cases (31.0 ％).ALK and c-myc were co-expressed in 20 cases (23.0 ％).c-myc protein expression,ALK and c-myc co-expression increased with the upgrade of ALCL clinical stages,and the expression was higher in International Prognostic Index (IPI) high-risk groups than in low-risk groups (P ＜ 0.05).FISH test results:of 87 ALCL cases,there were 50 cases (57.5 ％) of ALK rearrangements and 19 cases (21.8 ％) of ALK aneuploidy.c-myc rearrangement was detected in none of 87 ALCL cases,but there was aneuploidy in 19 cases (21.8 ％).The differences of c-myc aneuploidy in ALK positive and negative groups were statistically insignificant (P ＞ 0.05),while they were statistically significant in c-myc groups (P ＜ 0.05) and in different IPI groups (P ＜ 0.05).Conclusion c-myc protein expression and aneuploidy were related with ALCL clinical stages and IPI,which could be used as an indicator of estimating ALCL malignant degree and predicting prognosis.

Objective To approach the evaluative effect of respiratory variation of superior vena cava peak flow velocity measured using transthoracic echocardiography (TTE) on fluid responsiveness in patients with mechanical ventilation.Methods A prospective cohort study was conducted.All mechanical ventilated critically ill patients whose fluid therapy was planned due to hypovolemia in Department of Critical Care Medicine of Beijing Tongren Hospital of Capital Medical University from April 2011 to April 2013 were enrolled.Volume expansion was performed with 500 mL Linger solution within 30 minutes.Patients were classified as responders if pulse pressure variation (PPV) increased ≥ 13％ before volume expansion.The respiratory variation in superior vena cava peak velocity was calculated as the difference between maximum and minimum values of velocity in peak A,peak S and peak D over a single respiratory circle,and their variations (ΔA,ΔS,ΔD) were also calculated.The receiver operating characteristic curve (ROC curve) was plotted to assess the evaluative effect of respiratory variation of superior vena cava peak velocity on fluid responsiveness.Results Twenty-seven patients were enrolled in this study.Volume expansion increased PPV ≥ 13％ happened in 14 patients (responders).The velocity of superior vena cava in peak A,peak S,peak D was significantly increased after volume expansion compared with that before volume expansion in responders [peak A (cm/s):34.6 ± 2.2 vs.31.3 ±2.1,t=-2.493,P=0.027; peak S (cm/s):39.1 ± 1.3 vs.35.3 ±2.1,t=-2.564,P=0.024; peak D (cm/s):28.1 ± 1.2 vs.23.3 ± 1.4,t=-4.995,P=0.000],but there was no significant difference in ΔA,ΔS and ΔD between before and after volume expansion.The ΔA,ΔS and ΔD were positively correlated with PPV (r＝0.040,P=0.854; r=0.350,P=0.074; r=0.749,P=0.000).The area under ROC curve (AUC) of peak S was 0.36 [95％ confidence interval (95％CI):0.11-0.52],but the AUC of ΔS was 0.68 (95％CI 0.47-0.89),the AUC of peak D was 0.41 (95％CI 0.19-0.63),but the AUC of ΔD was 0.95 (95％CI 0.86-1.00),so the aberration rate of superior vena cava in respiration was better than the flow rate in superior vena cava.When the cut-off value of ΔS was 20.7％ for predicting fluid responsiveness,the sensitivity was 78.6％ and the specificity was 61.5％.When the cut-off value of ΔD was 12.7％ for predicting fluid responsiveness,the sensitivity was 92.0％ and the specificity was 92.3％.Conclusion Respiratory variations in superior vena cava peak velocity measured by TTE could assess fluid responsiveness in patients with mechanical ventilation.