Objective:The research was performed to understand the expression of CD80,CD86 and its ligand CD28 on peripheral lymphocytes in patients suffered from idiopathic thrombocytopenic purpura(ITP).Methods:The expression of co-stimulatory molecules(CD80,CD86 and its ligand CD28)on peripheral lymphocytes from 34 ITP patient samples and 34 normal samples was detected by immunofluorescence and flow cytometry.Results:The expression of CD80 and CD86 on peripheral lymphocytes from ITP patients(4.21?2.27%,7.19?5.16%) was higher than that of the normal samples as control(2.34?0.87%,4.08?1.96%,p

OBJECTIVE To investigate the role of XIAP in cisplatin-induced apoptosis and its possible mechanism. METHODS Hep-2 cells were treated with different concentrations of cisplatin for different times. Using crystal violet assay, RT-PCR and flow cytometry (FCM), we investingated the rate of the cell apoptosis and the expression of XIAP protein and mRNA at different times after treating with different concentrations of cisplatin. RESULTS Hep-2 cells were adherent and in normal survival condition with very low apoptosis rate. After treating with cisplatin, the rate of inhibition, the expression of XIAP protein and the rate of apoptosis were remarkably different between different concentrations and times. The expression of XIAP protein was down regulated accompanied by the augmentation of the rate of Hep-2 cell apoptosis. The products of RT-PCR were analyzed, demonstrating that the XIAP mRNA was down regulated with the increased concentrations of cisplatin overtime. Correlation analysis showed the rate of inhibition and the rate of apoptosis were positively correlated with increased concentrations of cisplatin for different times, however, the expression of XIAP protein was negatively correlated. The expression of XIAP protein and the rate of apoptosis were conversely correlated. CONCLUSION The most important pathway that cisplatin induces cell death is apoptosis. The levels of expression of XIAP proteinand mRNA in Hep2 cells are time-and concentration-dependent after treating with cisplatin. Down-regulation of the XIAP protein expression to augment the rate of apoptosis is one of the mechanisms for the cisplatin tokill the carcinoma cells.

OBJECTIVE: To investigate the effects of combined inhibition of signal transducer and activator of transcription 3 (STAT3) and hypoxia-inducible factor-1α (HIF-1α) in the enhancement of chemosensitivity of the model of human laryngeal squamous cacinoma in nude mice. METHOD: Model nude mice were divided into six groups randomly: control group(A) , cisplatin group(B) , cisplatin and AG490 group(C) , cisplatin and HIF-1α⁻/⁻ group (D), cisplatin combined AG490 and HIF-1α⁻/⁻ group (E), HIF-1α⁻/⁻ group (F) (only in calculating tumor inhibition rate). 3mg/kg cisplatin was administered by peritoneal injection for 3 days. Then cisplatin and 10 mg/kg AG490 were administered every other day for 12 days. The expression of Ki67 and HIF-1α was detected by immunocytochemical method. Western blot was used to detect the expression of p-STAT3. RESULT: The expression of HIF-1α in group C and group D were lower than that in group B, and there were significant difference respectively (t₁ = 2.782, t₂ = 3.873, P < 0.05); The expression of HIF-1α in group E was lower than that in group C and group D respectively, and there were significant difference respectively (t₁ = 6.140, t₂ = 3.667, P < 0.01). The expression level of p-STAT3 in group C was markedly lower compared with that in group B, and there were significant difference between them (t = 17.840, P < 0.01); There were no difference between the expression level of p-STAT3 in group D and that in group B (t = 0.038, P > 0.05); The expression level of p-STAT3 in group E was significantly lower compared with that in group C and group D respectively (P < 0.01). Tumor inhibition rate of group E was higher than that in group B, group C , as well as group D respectively and there were significant difference respectively (t₁ = 5.509, P < 0.01; t₂ = 3.422, P < 0.05; t₃ = 2.718, P < 0.05 ). Ki67 index of group E was lower than that in group B, group C as well as group D respectively and there were significant difference respectively(t₁ = 8.307, P < 0.01; t₂ = 3.736, P < 0.05; t₃ = 4.524, P < 0.01). CONCLUSION Combined inhibition of STAT3 and HIF-1α could enhance chemo-sensitivity in the model of human laryngeal squamous cacinoma in nude mice.
Animals ; Antineoplastic Agents ; pharmacology ; Carcinoma, Squamous Cell ; drug therapy ; metabolism ; Cisplatin ; pharmacology ; Drug Resistance, Neoplasm ; Hypoxia-Inducible Factor 1, alpha Subunit ; genetics ; metabolism ; Ki-67 Antigen ; metabolism ; Laryngeal Neoplasms ; drug therapy ; metabolism ; Mice ; Mice, Nude ; Neoplasms, Experimental ; drug therapy ; metabolism ; STAT3 Transcription Factor ; genetics ; metabolism ; Tyrphostins ; pharmacology

OBJECTIVE: To investigate the expression of X-chromosome-linked inhibitors of apoptosis (XIAP) XIAP in laryngeal squamous carcinomas and the relationship between the expression of XIAP and clinical biological behaviors. METHOD: Paraffin-embedded tissue specimens used for this study were obtained from 50 patients with laryngeal squamous carcinomas. The patients had received neither chemotherapy nor radiation therapy before tumor resection. Using immunohistochemical staining for the paraffin sections (SP methods), we examine the expression of XIAP protein in laryngeal squamous carcinomas and normal laryngeal tissues, investigate the connection of the XIAP expression with the clinicopathological parameters. RESULT: The expression of XIAP protein was observed mainly in the cytoplasm and nucleus. The staining color was dark brown. The expression of XIAP is remarkably higher in laryngeal squamous carcinomas than that in normal laryngeal tissue specimens. The statistical analysis revealed that in laryngeal squamous carcinomas XIAP expression had no relationship with the elements such as age, sex, smoking history, tumor site and lymph node metastases. However, there is significant correlation between XIAP expression and tumor clinical stage, T stage and pathological stage (P < 0.05). CONCLUSION XIAP is expressed higher in laryngeal squamous carcinomas than in normal laryngeal tissues. The level of XIAP expression is associated with tumor clinicopathological characteristics in laryngeal squamous carcinomas. While tumor growth and malignancy increased, the expression of XIAP was up-regulated in laryngeal squamous carcinomas. It may play a role of anti-apoptosis in the process of carcinogenesis and development in laryngeal squamous carcinomas.
Adult ; Aged ; Aged, 80 and over ; Carcinoma, Squamous Cell ; metabolism ; pathology ; Female ; Humans ; Laryngeal Neoplasms ; metabolism ; pathology ; Male ; Middle Aged ; Neoplasm Staging ; X-Linked Inhibitor of Apoptosis Protein ; metabolism

OBJECTIVE: To explore the coagulation deficit and genetic basis for a Chinese pedigree affected with Congenital dysfibrinogenemia (CD). METHODS: Peripheral venous blood samples of the proband and her family members (including 4 individuals from three generations) were subjected to routine blood test and assays of liver and kidney functions and viral hepatitis to exclude related diseases. Clauss method and DFg-PT method were used to determine the fibrinogen activity (Fg:C), and an immunoturbidimetric assay was used to determine the level of fibrinogen antigen (Fg:Ag). All of the exons (22 in total) and their flanking sequences of the FGA, FGB and FGG genes were amplified by PCR and directly sequenced. Variants in the coding regions of the three genes and transcriptional splicing sites were screened by using Mutation Surveyor^TM software. RESULTS: The Clauss method showed that Fg:C was significantly reduced in the proband and her father, whilst her mother and son were normal. With the DFg-PT method, the proband, her parents and son were all within the normal range. The Fg:C/Fg:Ag ratio of the proband and her father was lower than 0.7, whilst her mother and son were above 0.7. No significant change in the prothrombin time, activated partial thromboplastin clotting time and thrombin time was noted. Two genetic variants were detected, which included a homozygous missense variant in the FGA gene [c.991A>G (p.Thr331Ala)], which was predicted to be benign, and a heterozygous missense variant of the γ chain of the FGG gene [c.1211C>G (p.Ser404Phe)], which is located in a conserved region and unreported in the CLINVAR/HGMD/EXAC/1000G databases and literature. CONCLUSION This pedigree has conformed to the autosomal dominant inheritance of CD. The c.1211C>T (p.Ser404Phe) missense variant of the γ chain of the FGG gene probably underlay the pathogenesis of CD in this pedigree. The variant was unreported previously and named as "Fibrinogen Harbin II Ser404Phe".
Female ; Humans ; Afibrinogenemia/congenital* ; East Asian People ; Fibrinogen/genetics* ; Mothers ; Mutation ; Pedigree

Objective:To study the remote multi-disciplinary team (MDT) model in diagnosis and treatment of plague, in order to provide scientific basis for clinical treatment of plague.Methods:A retrospective analysis was made on the diagnosis and treatment process of a case of bubonic plague, a sudden imported Class A infectious disease, which was secondary to septicemic plague, involving a remote MDT team consisting of the Infectious Diseases Department, Intensive Care Unit, Respiratory and Critical Care Department, Cardiology Department, Pharmacy Department, and Nosocomial Infection Department of the General Hospital of Ningxia Medical University.Results:The patient was a middle-aged female who was engaged in herding work on the grassland. The first symptom was a sudden pain in the left lower abdomen for three days, accompanied by chest tightness and shortness of breath. After hospitalization, blood culture indicated Yersinia, abdominal CT indicated left lower abdominal lymph node enlargement, and lymph node puncture fluid was positive for Yersinia pestis nucleic acid. Combined with clinical symptoms and signs, the patient was diagnosed as bubonic plague secondary to septicemic plague, and was isolated for treatment. After remote MDT consultation, comprehensive treatment was given, including anti-infection treatment of streptomycin and ciprofloxacin, short-term application of hormones, nutritional support, and local application of chloramphenicol ointment, etc. Secondary acute pancreatitis occurred during the course of the disease, which improved after symptomatic treatment. Finally, after 20 days of treatment, MDT expert group assessed that it met the discharge criteria. No abnormalities were found in follow-up visits outside the hospital. Conclusion:The remote MDT is effective in the treatment of bubonic plague secondary to septicemic plague, which is worth popularizing.

Adult ; Aged ; Arsenicals ; pharmacology ; therapeutic use ; Bone Marrow Cells ; drug effects ; metabolism ; DNA Methylation ; drug effects ; Female ; Humans ; Inhibitor of Differentiation Proteins ; metabolism ; Male ; Middle Aged ; Myelodysplastic Syndromes ; metabolism ; therapy ; Oxides ; pharmacology ; therapeutic use ; Treatment Outcome ; Young Adult