ObjectiveTo investigate the distribution of human immunodeficiency virus-1 (HIV-1)subtypes and the relationship with transmission routes in Shenzhen city. MethodsThe epidemiological survey was conducted in 429 subjects with HIV-1 infection.Vein blood was collected and prepared with anticoagulation.Thereafter,the viral nucleic acid was extracted and subsequently amplified for HIV-1 env,gag genes by reverse transcription nested polymerase chain reaction. The viral sequences were analyzed using Mega software and compared with those in HIV database. The HIV-1 subtypes were confirmed and evolutionary tree was established. The gene discrete rate of different subtypes was calculated.ResultsFour hundred qualified samples were identified as CRF01_AE (n=207),CRF07_BC (n=115),CRF08 _BC (n=14),CRF02_AG (n=1),B (n=49) and C(n=14),respectively.CRF01_AE was the predominant subtype that was detected in the subjects with different transmission routes,such as homosexual contact,heterosexual contact,intravenous drug use and hospital-acquired infection. Among these,sexual contact was the most common route.There were nine cases infected with subtype B HIV-1 in 10 case who were blood borne. The gene discrete rate was more significant in subtype B HIV-1 compared to the other subtypes.According to the evolutionary tree analysis,the viruses under the same subtype formed the relatively independent clusters by different transmission routes. But some overlaps were observed as well. Conclusions Tbere are many HIV-1subtypes in HIV-1 infected subjects in Shenzhen, while the recombinant viruses present as the predominant form.Transmission routes are various with sexual contact as the most common route.Every subset distributes unevenly and forms its own characteristic.Overlap can be observed among the gene distribution of different HIV-1 subtypes.

CD5 Antigens ; metabolism ; Chromosomes, Human, Pair 11 ; Chromosomes, Human, Pair 14 ; Chromosomes, Human, Pair 18 ; Cyclin D1 ; metabolism ; Diagnosis, Differential ; Humans ; Ki-67 Antigen ; metabolism ; Lymphoma, B-Cell, Marginal Zone ; genetics ; metabolism ; pathology ; Lymphoma, Follicular ; genetics ; metabolism ; pathology ; radiotherapy ; Lymphoma, Mantle-Cell ; genetics ; metabolism ; pathology ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; Pseudolymphoma ; metabolism ; pathology ; Translocation, Genetic

Hematopoietic Stem Cell Transplantation ; Humans ; Leukemia, Lymphocytic, Chronic, B-Cell ; surgery ; Transplantation, Homologous

Adult ; Biopsy ; CD3 Complex ; metabolism ; DNA Nucleotidylexotransferase ; metabolism ; Female ; Humans ; Leukemia, Biphenotypic, Acute ; metabolism ; pathology ; Lymph Nodes ; metabolism ; pathology ; Neck ; PAX5 Transcription Factor ; metabolism ; Precursor Cell Lymphoblastic Leukemia-Lymphoma ; metabolism ; pathology

Objective To investigate the mechanism of cyclic adenosine monophosphate / protein kinase A signal transduction pathway in severe acute pancreatitis(SAP)-associated lung injury.Methods Seventy-two male healthy SD rats were completely randomized into three groups:sham operation (SO) group(n =8),SAP group and SAP plus H89 (cAMP inhibitor) group,then the latter two groups were divided into four sub-groups with eight rats in each sub-group according to the sampling time of 3,6,12 and 24 h,and the total numbers of groups were nine.The content change of TNF-α and IL-1β in serum,protein levels of cAMP-dependent protein kinase catalytic subunit (PKA C) and phosphorylated vasodilator-stimulated phosphoprotein(p-VASP) and the expression of VSAP mRNA in lung tissue were detected by enzyme-linked immunosorbent assay (ELISA),immunohistochemistry and quantitative real time PCR,respectively.Pathological changes of the pancreas and lung tissues were also observed.Results Compared with the SO group,the serum levels of TNF-α and IL-1β in the SAP group were obviously increased at different time points(P ＜0.05).Pathological changes of the pancreas and lung tissues were aggravated significantly.The protein levels of PKA C,p-VASP and the expression of VSAP mRNA in lung tissue were increased significantly (P ＜0.05)which peaked at 12 h in the SAP group [TNF-α was (266.07 ± 17.14) pg/mL,IL-1β(169.17 ±25.92) pg/mL,PKA C(210.69 ±6.32) × 103,p-VASP (56.62 ±0.57) × 103,VASP mRNA(2.06 ±0.21)],which had positive correlation with the serum level of TNF-α and IL-1β.Compared with the SAP group,pathological changes of the pancreas and lung tissues were alleviated significantly,the protein levels of PKA C,p-VASP and the expression of VSAP mRNA in lung tissue were decreased significantly in the SAP plus H89 group at different time points(P ＜ 0.05).Conclusion The cyclic adenosine monophosphate / protein kinase A signal transduction pathway is found to participate in the pathological process of SAP-associated lung injury through the up-regulations of TNF-α,IL-1 β and phospho-VASP.

Objective:To investigate the effects of acupoint massage on cognitive function and sleep quality in elderly patients with hypertension. Methods:A total of 68 elderly patients with hypertension were enrolled, and their ages were all over 60 years old. They were divided into a control group and a treatment group by simple random method, with 34 cases in each group. Patients in the control group were treated by routine psychological health guidance and sleep knowledge education, while patients in the treatment group were treated by acupoint massage on the base of the interventions given to the control group. Both of their treatment courses were 3 months. Pittsburgh sleep quality index (PSQI) scores and mini-mental state examination (MMSE) scores before and after treatment were recorded and compared. Results:Two groups’ PSQI scores before treatment had no significant difference (P>0.05). After 3 months of treatment, their PSQI scores were statistically different (P<0.05). There was also no between-group statistical difference in MMSE score before treatment (P>0.05), but there was a significant difference after treatment (P<0.05). Conclusion:Acupoint massage for elderly patients with primary hypertension can improve their sleep quality and enhance their cognitive function, thus it is worthy of being applied in clinical nursing work.

Objective To explore the possibility and reliability of mutual recognition of renal indexs among 20 clinical labora-tories entitled with state key clinical laboratory,and to supply reference for future national mutual recognition of laboratory examination results.Methods Determined the concentrations of TP,ALB,TC,TG and Roche multiple calibrators and sub-mitted the results.The results were analyzed for robust Z score,percentage difference after calibration,bias at medical deci-sion level to observe the possibility and reliability.Results The bias of TG was out of the least allowable bias,thus they were not appropriate to mutual recognition.Conclusion It remains immature in the mutual recognition of lipids’determina-tions and much work needs to be done in field of internal quality control of the laboratory.

Objective To observe the clinical effect of percutaneous transluminal angioplasty (PTA)combined with autologous peripheral blood stem cells(PBSC)transplantation in the treatment of lower extremity ischemic disorders.Methods Fourty-two cases of lower extremity ischemic disorders in the treatment group were treated with PTA and autologous peripheral blood stem cells injection and 40 cases in control group were treated with PTA exclusively.Results All the procedures were successful.In treatment group,ABI improved from 0.32 ±0.11 to(at the 3rd month)and 0.49 ±0.13(at the 6th month)(t=-6.765,-6.040,P＜0.05)while TcPO_2 improved from(26.1 ± 2.3)mm Hg to(32.7 ±4.2)mm Hg(at the 3rd month)and(34.5 ±2.7)mm Hg(at the 6th month)(t=-8.901,-14.250,P＜0.05).In control group,ABI improved from 0.30 ±0.12 to 0.47 ±0.15 and 0.47 ±0.130=-5.631,-5.873,P＜0.05)while TcPO_2 increased from(25.9 ±2.4)mm Hg to(28.9 ±2.9)mm Hg(at the 3rd month)and(28.9 ± 2.1)mm Hg(at the 6th month)(t=-5.090,-5.389,P＜0.05).There was significant difference in TcPO_2 on follow-up between the two groups after the treatment(P＜0.05).Conclusion Autologous PBSC transplantation in combination of PTA was effective for the treatment of lower extremity ischemic disorders.PBSC injection helps to increase TcPO_2.

Objective To investigate the diagnostic value of technologies for arteriovenous malformation(AVM ) ,which are skull to boneless head CTA by surface shaded display technique (hereinafter referred to as the SSD‐CTA technology) .Methods Totally 27 patients of the First Affiliated Hospital of Chongqing Medical University were selected ,which were diagnosed with AVM by VCTDSA .The original data to our hospital CT workstation were imported ,SSD‐CTA technology to bone reconstruction were performed ,and the data of the two groups were compared .Another 5 patients in our hospital which were diagnosed with AVM by SSD‐CTA examination were selected ,and compared the results with DSA .Results The quality score of SSD‐CTA reconstructed image was less than that of VCTDSA ,but the diagnosis of the two technologies for AVM had no significant statistical difference (P>0 .05) .The number of AVM patients from our hospital wsa too less to do the statistical analysis .The detail resolution of SSD‐CTA was less than DSA ,but the diagnosis of SSD‐CTA was consistent with DSA .Conclusion SSD‐CTA has clinical practical val‐ue ,can be used as a check ,intracranial venous malformation diagnosis .

OBJECTIVE: To explore the conversion of resin monomer, the change of inorganic component and the influencing factors on the oxygen inhibition layer formed on the cured surface of resin cement. METHODS: Three kinds of resin cement were divided into three groups: (1) light-cured group: RelyX Veneer, NX3 (light-cured), Variolink N; (2) dual-cured group: RelyX U200 Automix, NX3 (dual-cured), Multilink Speed; (3) chemically-cured group, and the above 3 types of dual-cured resin cement cured without illumination could be used as chemically-cured resin cement. Each sample was provided with and without oxygen exposure of two matching surfaces, cured respectively, and the variables of light intensity and illumination time were set in the light-cured group and the dual-cured group. Scanning electron microscopy was used to observe the samples' surface morphology. Energy dispersive spectrometer was used to analyze the samples' composition of surface elements. Confocal Raman spectroscopy was used to measure the monomer conversion of resin cement and to obtain the thickness of the oxygen inhibition layer. RESULTS: (1) On the surface of cured resin cement, the weight percentage of oxygen element in the aerobic side was higher than that in the anaerobic side (P < 0.05), and the weight percentage of inorganic element was lower than that in the anaerobic side (P < 0.05). (2) The surface monomer conversion of the cured resin cement on the aerobic surface was significantly lower than that on the anaerobic surface (P < 0.05), and the surface monomer conversion on the aerobic surface and the anaerobic surface was the lowest in the chemically-cured group (P < 0.05), the dual-cured group was the highest (P < 0.05), and the light-cured group was between them. With the increase of light intensity or illumination time, the surface monomer conversion increased (P < 0.05). (3) The thickness of the oxygen inhibition layer was the thickest in the chemically-cured group [(40.27±2.81) μm](P < 0.05), the thinnest in the dual-cured group [(21.87±5.42) μm](P < 0.05) and light-cured group [(23.73±3.84) μm] was between them. With the increase of light intensity or illumination time, the thickness of the oxygen inhibition layer of resin cement decreased (P < 0.05). CONCLUSION When resin cement is exposed to oxygen, it will form an oxygen inhibition layer, its surface's inorganic filler is less, the surface monomer conversion is lower. The surface monomer conversion and the thickness of oxygen inhibition layer are affected by curing mode and illumination factors.
Materials Testing ; Oxygen ; Resin Cements