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Eight compounds were isolated from the ethyl acetate fraction of the 80% aqueous ethanol extract of the roots and stems of Rubus pirifolius Smith by AB-8 macroporous resin, silica gel, ODS, Sephadex LH-20 column chromatography, and semi-preparative HPLC. Their structures were identified by spectral analysis such as 1D/2D NMR, MS, UV, IR and by comparison with literature information as rubussecotriterpene A (1), rubussecotriterpene B (2), cecropiacic acid (3), cecropiacic acid 3-methyl ester (4), alphitolic acid (5), betulinic acid (6), betulin (7), and obtusalin (8). Compounds 1 and 2 are new compounds, and compounds 3-8 were isolated from this plant for the first time.
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Abstract Objective To explore the molecular mechanism of neuropathologic damage induced by radiofrequency ablation at different temperatures. Methods This is basic research, and 36 SD rats were used to construct the neuropathological injury model. The rats were subjected to radiofrequency stimulation at different temperatures and were divided into 6 groups according to the temperature injury: 42°, 47°, 52°, 57°, 62°, and 67°C groups. Conduction time, conduction distance, and nerve conduction velocity were recorded after temperature injury. HE-staining was used to observe the histopathological morphology of the sciatic nerve. The expression of SCN9A, SCN3B, and NFASC protein in sciatic nerve tissue were detected by western blot. Results With the increase in temperature, nerve conduction velocity gradually decreased, and neurons were damaged when the temperature was 67°C. HE-staining showed that the degrees of degeneration of neurons in rats at 47°, 52°, 57°, 62°, and 67°C were gradually increased. The expression of SCN9A, SCN3B protein in 57°, 62°, 67°C groups were much higher than that of NC, 42°, 47°, 52°C groups. However, the expression of NFASC protein in 57°, 62°, 67°C groups was much lower than that of the NC, 42°, 47°, 52°C groups. Conclusion There was a positive correlation between temperature caused by the radiofrequency stimulation to neuropathological damage. The mechanism is closely related to the expression of SCN9A, SCN3B, and NFASC protein in nerve tissue caused by heat transfer injury.
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@#Objective - To establish a new non exposed intratracheal instillation method for establishing a rat silicosis model. Methods ， The specific pathogen free SD rats were randomly divided into control group and experimental group with ten rats in ， each group. Rats in the control group were given 1.0 mL of 0.9% sodium chloride solution and rats in the experimental group - were given 1.0 mL of silica suspension with a mass concentration of 50 g/L adopting to the one time intratracheal instillation ， - ， method and then followed by ventilator assisted ventilation immediately. When the tidal volume stabilized at 2.0 mL the ventilator was removed and the tracheal intubation was pulled out. Five rats in each group were sacrificed after two and four ， - Results weeks after modeling and hematoxylin eosin staining and Masson staining of lung tissue were performed. There was ， ， no death in the two groups of rats during the experiment. After two and four weeks the control group had normal lung structure ， ， ， normal alveolar cavity size no inflammatory cell infiltration thin alveolar wall only a small amount of collagen distribution ， around the lung interstitium and bronchus. At the second week of modeling the alveolar wall of the rats in the experimental ， ， ， group was slightly thickened interstitial lymphocytes and macrophages were infiltrated slight hyperplasia was found and a ， small amount of fibroblasts were visible. At the 4th week of modeling the alveolar wall of the rats in the experimental group was ， ， ， ， significantly thickened fibrous nodules were formed and fibroblasts fibrocytes collagen fibers were significantly increased. Conclusion - The combination of ventilator and non exposed intratracheal instillation method can be used to successfully ， ， . establish a rat silicosis model which is simple safe and effective
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@#[Abstract] Objective: The co-culture model of LAG3+Jurkat cells and tumor cells was constructed to investigate the anti-tumor effect and mechanism of a novel fully human anti-LAG3 monoclonal antibody in vitro. Methods: Jurkat cells were stimulated with PHA to simulate TIL, and the secretion of IL-2 was detected by ELISA to evaluate the degree of Jurkat cell activation. Meanwhile, FCM, Immunofluorescence and WB assays were employed to detect the expression of LAG3 in activated Jurkat cells and MHC classⅡmolecule（MHC-Ⅱ）, a LAG3 ligand, in HGC-27, MGC-803 and A549 tumor cells. The co-culture model of activated LAG3+Jurkat cells and tumor cells was constructed, and CCK-8 assays were employed to detect the killing efficiency of LAG3+Jurkat cells against tumor cells at different effector-target ratios and the effect of the anti-LAG3 antibody . The secretion levels of cytokines IL-2, IL-10 and TNF-α in supernatant of co-culture system were detected by ELISA. Results: After 48 h treatment, 2 μg/mL PHA exhibited no obvious cytotoxicity to Jurkat cells (P>0.05), but could significantly induce IL-2 secretion (P<0.01) and LAG3 expression (P<0.01), indicating activated LAG3+Jurkat cells were acquired. MGC-803 and A549 cells significantly expressed MHC-Ⅱ (P<0.01), but HGC-27 cells did not express MHC-Ⅱ (P>0.05). The co-culture model of LAG3+Jurkat cells and tumor cells was constructed at a effector-target ratio of 10∶1. The anti-LAG3 antibody could effectively enhance the killing efficiency of Jurkat cells against MHC-Ⅱ+ tumor cells (P<0.05). Further analysis revealed that the secretion levels of cytokines IL-2, IL-10 and TNF-α were increased in the co-culture supernatant of MHC-Ⅱ+ target cell group (all P<0.01). Conclusion: A co-culture model of LAG3+Jurkat cells and tumor cells was successfully constructed in vitro. The anti-LAG3 antibody might increase the killing effect of Jurkat cells against MGC-803 and A549 tumor cells through blocking LAG3/MHC-Ⅱ interaction, which may be related to the increased secretion levels of cytokines IL-2, IL-10 and TNF-α in the supernatant of co-culture system.
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Objective@#To explore effect of intensive intervention for improving the referral rate of children with visual refractive disorders, and to provide a reference for myopia prevention and control of children and adolescents.@*Methods@#A total of 4 464 preschool children were selected from Zhuanqiao county, Minghang district in Shanghai for the eyesight investigation during April to June in 2019. Stratified random cluster sampling method was used to divide 1 724 children into intervention group and (896) control group (828) depending on the type of kindergartens. The intervention group was provied with an intensive intervention, including children s vision health assessment, parental self management guidance for children s eye care, and community based eye care services, while the control group carried out routine intervention measures.@*Results@#In 2019, the incidence of visual and primary refractive screen abnormalities in preschoolers of Zhuanqiao community was 38.62%. The incidence of naked eye vision abnormalities was 4.40%, the incidence of myopia risk group, hyperopia risk group and astigmatism risk group was 37.10%, 2.20%, and 6.10 %, respectively. After the intervention, the referral rate of the intervention group (68.75%) was significantly higher than that of the control group (17.15%)( χ 2=465.09, P <0.01). The differences between two groups were statistically significant in choosing the hospital for treatment ( χ 2=10.01, 51.51, 15.40, 27.79, 19.96, 24.24, P <0.01).@*Conclusion@#The vision and refractive status of preschoolers worths further attention. Intensive intervention can improve the referral rate for children with screened vision abnormalities, which facilitates the prevention and early diagnosis of vision problems among preschoolers.
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OBJECTIVE@#To establish the in vivo traceable acute myeloid leukemia mice model with Luciferase-Expressing KG1a Cells.@*METHODS@#KG1a cells with stable luciferase gene expression (called as KG1a-Luc cells) were constructed by lentivirus transfection, then sifted out by puromycin. Eighteen male NOD-SCID-IL2rg@*RESULTS@#KG1a cells expressing luciferase stably were successfully obtained. The tumor luminescence wildly spread at day 17 captured by in vivo imaging. The KG1a-Luc tumor cells could be detected in the peripheral blood of the mice, with the average percentage of (16.27±6.66)%. The morphology and pathology result showed that KG1a-Luc cells infiltrate was detected in bone marrow, spleens and livers. The survival time of the KG1a-Luc mice was notably shorter as compared with those in the control group, the median survival time was 30.5 days (95%CI: 0.008-0.260).@*CONCLUSION@#The acute myeloid leukemia NOD-SCID-IL2rg
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Animals , Male , Mice , Disease Models, Animal , Interleukin Receptor Common gamma Subunit , Leukemia, Myeloid, Acute , Luciferases/genetics , Mice, Inbred NOD , Mice, SCIDABSTRACT
@#【Objective】To investigate the sleep status of patients with chronic HBV infection【Methods】From January 2019 to June 2019 ，353 patients with chronic hepatitis B virus infection in the outpatient department of the Third Affiliated Hospital of Sun Yat-sen University，using the sleepiness scale，insomnia scale，sleep quality scale，anxiety self- rating form and depression self- evaluation ，patients were scored and grouped according to sleep grading criteria. Patients were collected for gender，age，disease diagnosis，antiviral therapy，and educational level. Chi-square correlation test and multivariate logistic regression were applied to analyze the influencing factors of sleep. 【Results】 The overall sleepiness rate was 47.88%. The overall insomnia rate was 53.26%. There were 6.8% patients who had poor sleep quality. The risk factor of lethargy was the degree of anxiety（P = 0.000，OR = 3.076，95% CI 1.706~5.545）. The risk factor of insomnia was anxiety（P = 0.000，OR = 14.693，95% CI 5.046~42.782）and depression（P = 0.002，OR = 2.279，95% CI1.340~3.877）. The risk factor of sleep quality was anxiety（P = 0.000，OR = 9.990，95% CI 4.031~24.758）.【Conclusions】 Patients with chronic HBV infection have a high proportion of subjective sleep disorders. The main influencing factor is mental state of the patient. A full understanding of the patients′ sleep status will help the patients′ treatment.
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@#[摘 要] 目的：探讨miR-202-5p对口腔鳞状细胞癌（oral squamous carcinoma，OSCC）细胞生长、集落形成、迁移和侵袭的影响及其可能的机制。方法：通过qPCR法检测OSCC细胞系（Tca8113和SCC-4）和口腔角质细胞HOK中miR-202-5p和T细胞核因子c3（nuclear factor of activated T-cells isoform c3，NFATc3）mRNA的表达水平；将miR-202-5p mimic或/和NFATc3过表达质粒转染入Tca8113和SCC-4细胞，用MTT和集落形成实验检测转染对细胞增殖的影响，划痕伤口愈合实验和Transwell实验检测转染对细胞迁移和侵袭的影响，用Western blotting实验检测转染对NFATc3蛋白表达的影响；通过双荧光素酶报告基因实验验证miR-202-5p对候选靶基因NFATc3的直接调控作用。结果：与正常口腔角质细胞HOK相比，miR-202-5p在OSCC细胞Tca8113和SCC-4中呈低表达（均P<0.01），NFATc3 mRNA和蛋白质表达显著升高（P<0.01）。在Tca8113细胞和SCC-4细胞中，过表达miR-202-5p可显著抑制细胞生长、集落形成、迁移、侵袭以及细胞中NFATc3表达（均P<0.01）。NFATc3被证实是miR-202-5p的靶基因，过表达NFATc3能逆转miR-202-5p对OSCC细胞生长、迁移和侵袭的抑制作用。结论：miR-202-5p通过下调NFATc3表达发挥其肿瘤抑制功能，导致OSCC细胞的生长、迁移和侵袭受到抑制。
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ABSTRACT: The influences of byproduct amendments, containing silicon, calcium, magnesium and potassium, on acidic soil quality in Jiaodong Peninsula of China had been studied and compared with that of lime through monitoring physicochemical properties and enzyme activities of acidic soil over a 120-day period. Byproduct amendments (1125, 2250, 4500 and 9000 kg ha-1) and lime 2250 kg ha-1 was applied in the acidic soil. Results showed that both byproduct amendments and lime significantly increased the pH, EC and enzyme activities of soil. The by-product amendments inhibited microbial biomass carbon and soil respiration. Nevertheless, the lime-treated soil had a much more higher level of CO2 emission than the by-product amendments-treated soil. Compared to the by-product amendments-treated soil, the lime-treated soil had the higher pH, peroxidase activity, phenol oxidase activity and invertase activity. Therefore, lime might be a better choice over by-product amendments to improve chemical and biological properties of the acidic soil in Jiaodong Peninsula of China. For soils lacking available calcium and magnesium, the mixture of 4500 kg ha-1 amendments and 2250 kg ha-1 lime was recommend to treat the soil.
RESUMO: As influências do emprego de subprodutos que contêm silício, cálcio, magnésio e potássio, sobre a qualidade do solo ácido na Península de Jiaodong da China, foram estudadas e comparadas com a da cal através do monitoramento das propriedades físico-químicas e atividades enzimáticas do solo ácido ao longo de um 120- período do dia. Os resultados mostraram que as alterações dos subprodutos e a cal aumentaram significativamente as atividades de pH, CE e enzimas do solo. As alterações dos subprodutos obviamente inibiram o carbono da biomassa microbiana e a respiração do solo, mas o solo tratado com cal apresentou um maior nível de emissão de CO2. Em comparação com as modificações do subproduto, o solo tratado tinha o maior pH, a atividade da peroxidase, a atividade da fenol oxidase e a atividade da invertease. Portanto, o cal pode ser uma escolha melhor em relação às alterações dos subprodutos para melhorar as propriedades químicas e biológicas do solo ácido na Península de Jiaodong da China.
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@# Objective: To investigate the molecular mechanism of chemokine CCL20/CCR6 in promoting invasion and migration of colon cancer SW480 cells. Methods: Colorectal cancer SW480 cells with high expression of CCR6 receptor were screened by immunochemistry (IHC). After co-culture with recombinant human CCL20, the invasion and migration of SW480 cells were detected by Transwell assay and Wound-Healing assay, respectively. Expressions of EMT markers, AKT signal protein and target protein MMP3 were detected by immunofluorescence (IF) and WB. AKT signaling pathway as the key mechanism was confirmed by MK2206 blocking assay. The expressions of CCL20 and MMP3 in colorectal cancer tissues as well as their correlation were analyzed by TCGAdatabase resources (https://portal.gdc.cancer.gov/). Results: CCL20 promoted the invasion and migration ability of SW480 cells significantly (all P <0.01), and this was induced by activation of AKT signaling and up-regulation of downstream target protein MMP3, instead of EMT. Blocking AKT signaling could significantly inhibit the invasion and migration of SW480 cells, and down-regulate MMP3 expression (P<0.05). TCGA platform data showed that the expressions of CCL20 and MMP3 in colorectal cancer tissues were significantly higher than those in normal mucosa tissues (P<0.05 or P<0.01), and an evidently positive correlation was found between CCL20 and MMP3 (r =0.051, P<0.01). Conclusion: The chemokine CCL20 promotes the invasion and migration of SW480 cells throughAKT/MMP3 signal axis, but not the EMT.
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Objective To explore clinical characteristics of human cytomegalovirus (HCMV) and polyomavirus (BKV and JCV) infection after allogeneic hematopoietic stem cell transplantation (allo-HSCT).Methods Clinical data of 53 patients with hematologic malignancies who underwent allo-HSCT from June 2016 to December 2017 were collected.HCMV, BKV and JCV loads in patients' peripheral blood and urine were monitored once a week from day 1 to day 100 after transplantation.Incidence, occurrence time, clinical manifestations, and risk factors of viral infection were analyzed.Results A total of 51 patients had viral infection, infection rate was 96.23％.HCMV, BKV, and JCV infection rates were 54.72％ (29/53), 77.36％ (41/53), and 28.30％ (15/53) respectively.Incidences of pulmonary infection, acute graft-versus-host disease (aGVHD), and hemorrhagic cystitis (HC) were 54.72％, 58.49％, and 20.75％respectively.Analysis on risk factors showed that aGVHD (OR, 24.61[95％ CI, 2.30-46.24]), pretreatment with total body irradiation (TBI) (OR, 33.39[95％ CI, 1.57-79.13]), and use of antithymocyte globulin (ATG) (OR, 24.77[95％ CI, 1.16-52.58]) were independent risk factors affecting HCMV.Human leukocyte antigen (HLA) coincidence (OR, 0.003[95％ CI, 0.00-0.10]) could reduce the risk of HCMV viruria;pretreatment with TBI (OR, 15.10[95％ CI, 1.14-39.27]) was an independent risk factor for BKV viruria, compatible blood group of donor and recipient (OR, 0.07[95％ CI, 0.01-0.64]) could reduce the risk of BKV viruria.Conclusion HCMV and polyomavirus infection in blood and urine of recipient should be monitored as soon as possible after transplantation, so as to prevent and reduce complications in time.
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Xanthii Fructus (XF) is one of important drugs for the treatment of sinusitis and headache.It is commonly used in the treatment of diseases relating to immune abnormalities,such as rheumatoid arthritis,acute and chronic rhinitis,allergic rhinitis,and skin diseases,with a high medicinal value.Modern pharmacological studies have showed a wide range of pharmacological effect and a high medicinal value in XF.However,due to long-term or excessive intake,and improper processing of medicinal materials,toxic reactions have often occurred.Toxicological studies have shown that XF poisoning can cause substantial damage to organs,such as the liver,heart and kidney,especially to liver.This paper reviews the pharmacological action,toxic substances and hepatotoxicity mechanism of XF by systematically reviewing and summarizing relevant literatures on XF both at home and abroad.It is concluded that XF has anti-hypertension,anti-allergic,anti-bacterial,anti-inflammatory,analgesic,anti-tumor and lipid-decreasing effects.The toxic components are mainly atractyloside,carboxy atractyloside and 4'-desulphate-atractyloside.The mechanism of hepatotoxicity induced by XF is closely related to lipid peroxidation,bile cholestasis and hepatocyte energy metabolism.Meanwhile,the discovery of novel biomarkers of hepatotoxicity,such as miRNA-122,also provides new ideals for medical research.Toxic traditional Chinese medicine (TCM) is an important part of TCM.Compatibility or processing can reduce or eliminate toxicity and preserve or increase efficacy.At present,there are few reports on the principle of attenuating the production of XF.The author suggests further strengthening the study on the principle of attenuation of XF,giving full play to the unique curative effect of XF and developing its greater medicinal value.
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This study adopted the 4 pairs of simple sequence repeats(SSR) primers selected by National Resource Center for Chinese Meteria Medica (CACMS) to detect 29 populations of Dendrobium officinale samples from 9 main places of production; 5,7,4 and 3 polymorphism bands were amplified from these 4 pairs of SSR primers. The DNA identities of different populations were constructed by SSR. The 29 D. officinale populations could be divided into 4 classes. The clustering result was related to the places of production. Samples from Yunnan,Guizhou,Sichuan provinces were classified into one category,while samples from Anhui and Guangxi provinces were classified into another category. Samples from Guangdong Danxia,Zhejiang Yongkang,Zhejiang Leqing and Taining belonged to a category. PopGene (version 1.32) software was applied to calculate the genetic similarity of the 29 D. officinale populations. The similarities was between 0.403 4 and 1.0.Based on the genetic similarity,the genetic consistency included three classes,A,B and C. Samples with a similar geographical location and landform environment have higher genetic similarities,which indicate the same genetic background. This paper provides reference information to study the identification, selection and breeding of good varieties.
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OBJECTIVES: To explore the clinical significance and correlation of microRNA-21 (miR-21) and the neutrophil-lymphocyte ratio (NLR) in patients with acute myocardial infarction (AMI). METHODS: The observation group contained 184 patients, while the control group contained 150 patients. The expression of miR-21 in the serum of each group was detected by qRT-PCR. RESULTS: A total of 184 patients and their family members were followed-up for 30 days, among which 35 patients died and 149 patients survived, resulting in a survival rate of 80.97%. According to univariate analysis, there were significant differences in age, cardiac troponin (cTn), heart rate, Killip grade, percutaneous coronary intervention (PCI) operation rate, miR-21 and NLR. In the receiver operating characteristic (ROC) analysis, the area under the curve (AUC) values of miR-21 and NLR for the diagnosis of AMI were 0.909 and 0.868, respectively, and the area under the combined detection curve was 0.960. In the Kaplan-Meier survival analysis, the survival of patients with high miR-21 expression and NLR was significantly higher than that of patients with low miR-21 expression and NLR (p=0.027; p=0.001). The correlation showed that miR-21 expression in serum was positively correlated with the NLR in the observation group (r=0.528, p<0.05). cTn, heart rate, Killip classification, PCI operation rate, miR-21, NLR are independent risk factors for AMI. CONCLUSION: miR-21 and NLR play a role in the diagnosis of AMI and can be used as predictors for the survival of AMI.
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Humans , Male , Female , Adult , Middle Aged , Aged , Aged, 80 and over , Lymphocyte Count , MicroRNAs/genetics , Myocardial Infarction/diagnosis , Myocardial Infarction/blood , Neutrophils , Biomarkers , Case-Control Studies , Risk Factors , ROC Curve , Sensitivity and Specificity , Kaplan-Meier Estimate , Real-Time Polymerase Chain Reaction , Myocardial Infarction/geneticsABSTRACT
ABSTRACT Objective: To determine whether serum levels of anti-acetylcholine receptor antibody (anti-AChR-Abs) are related to clinical parameters of blepharospasm (BSP). Methods: Eighty-three adults with BSP, 60 outpatients with hemifacial spasm (HFS) and 58 controls were recruited. Personal history, demographic factors, response to botulinum toxin type A (BoNT-A) and other neurological conditions were recorded. Anti-AChR-Abs levels were quantified using an enzyme-linked immunosorbent assay. Results: The anti-AChR Abs levels were 0.237 ± 0.022 optical density units in the BSP group, which was significantly different from the HFS group (0.160 ± 0.064) and control group (0.126 ± 0.038). The anti-AChR Abs level was correlated with age and the duration of response to the BoNT-A injection. Conclusion: Patients with BSP had an elevated anti-AChR Abs titer, which suggests that dysimmunity plays a role in the onset of BSP. An increased anti-AChR Abs titer may be a predictor for poor response to BoNT-A in BSP.
RESUMO Objetivo: Determinar se os níveis séricos do anticorpo antirreceptor de acetilcolina (anti-AChR-Abs) estão relacionados aos parâmetros clínicos do blefaroespasmo (BSP). Métodos: Fora recrutados 83 adultos com BSP, 60 pacientes ambulatoriais com espasmo hemifacial (HFS) e 58 controles. Foi aplicado um questionário para registrar história pessoal, fatores demográficos, resposta à toxina botulínica tipo A (BoNT-A) e outras condições neurológicas. Os níveis de anti-AChR-Abs foram quantificados usando um ensaio imunoenzimático. Resultados: O nível de anti-AChR-Abs foi de 0,237 ± 0,022 unidades de densidade óptica (OD) no grupo BSP, significativamente diferente em comparação com o grupo HFS (0,160 ± 0,064) e o grupo controle (0,126 ± 0,038). O nível de anti-AChR-Abs se correlacionou com a idade e a duração da resposta à injeção de BoNT-A. Conclusão: Pacientes com BSP apresentaram títulos elevados de anti-AChR-Abs, o que sugere que a desimunidade desempenha um papel no surgimento de BSP. O aumento do título de anti-AChR-Abs pode ser um preditor de resposta insuficiente à BoNT-A em BSP.
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Humans , Male , Female , Adult , Middle Aged , Aged , Autoantibodies/blood , Blepharospasm/blood , Receptors, Cholinergic/immunology , Hemifacial Spasm/blood , Reference Values , Blepharospasm/physiopathology , Blepharospasm/drug therapy , Enzyme-Linked Immunosorbent Assay , Case-Control Studies , Sex Factors , Analysis of Variance , Age Factors , Botulinum Toxins, Type A/therapeutic use , Hemifacial Spasm/physiopathology , Hemifacial Spasm/drug therapy , Electromyography , Neuromuscular Agents/therapeutic useABSTRACT
<p><b>Objective</b>To evaluate the semen quality of the HIV/AIDS male patients after treated by the highly active antiretroviral therapy (HAART) and their potential of transmitting HIV/AIDS and provide some evidence for this cohort of males who wish for parenthood.</p><p><b>METHODS</b>We collected semen samples from 20 HIV/AIDS male patients who had been treated by HAART for over 6 months and wished for parenthood. We examined sperm concentration, viability and total motility and the percentage of morphologically normal sperm (MNS) using the computer-assisted semen analysis system, measured the HIV-1 RNA loads in the semen by the Cobas Amplicor Monitor test, and counted CD4+ T cells in the peripheral blood by flow cytometry.</p><p><b>RESULTS</b>The patients were aged 25－40 (30.7 ± 5.05) years. After treated by HAART for 6－26 (14.24 ± 12.26) months, the count of blood CD4+ T cells was significantly increased (341－1 058 ［535.76 ± 212.021］ /μl) in comparison with the baseline (226－965 ［422.38 ± 200.86］ /μl). Compared with the normal value, the semen volume was increased except in 1 case (≥2 ml) while total sperm motility was decreased in 13 cases (≥40%), and so were sperm concentration in 2 cases (≥15 × 106 / ml), sperm viability in 5 (58%), the percentage of progressively motile sperm in 18 (≥32%), and the percentage of MNS in 6 (≤4%). HIV-1 RNA in the peripheral blood was <20 copies/mL in all the cases and that in the seminal plasma was also <20 copies/ml in 18 cases but >20 copies/mL in the other 2 (［4.70 × 101］ and ［2.2 × 102］ copies/ml, respectively). Of the 4 couples that had sex without protective measures for over 6 months, all the 4 female partners exhibited negative HIV antibodies in regular follow-up examinations and 1 achieved spontaneous pregnancy and healthy birth, with negative HIV-1 RNA in both the mother and the baby.</p><p><b>CONCLUSIONS</b>The HIV RNA level is higher in the semen than in the blood of the HIV/AIDS male patients after HAART, which indicates the potential risk of their semen transmitting HIV/AIDS to their female partners. Their sperm concentration and total sperm motility are lower than the normal value, which suggests a decreased fertility.</p>
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Adult , Female , Humans , Male , Pregnancy , Young Adult , Antiretroviral Therapy, Highly Active , Flow Cytometry , HIV Infections , Drug Therapy , Virology , RNA, Viral , Semen , Semen Analysis , Sperm Count , Sperm Motility , SpermatozoaABSTRACT
BACKGROUND: Stathmin as a critical protein involved in microtubule polymerization, is necessary for survival of cancer cells. However, extremely little is known about Stathmin in glioblastoma. So, this study was designed to elucidate the function of Stathmin gene in the tumorigenesis and progression of glioblastoma cells. METHOD: The lentiviral interference vector pLV3-si-Stathmin targeting Stathmin gene and the control vector pLV3-NC were established for the co-transfection of 293T cells together with the helper plasmids. Viral titer was determined via limiting dilution assay. Then pLV3-si-Stathmin and pLV3-NC were stably co-transfected into U373 and U87-MG glioblastoma cells. Expression levels of Stathmin protein in each group were determined by using Western Blot, and the proliferation and migration ability of the cells with downregulated Stathmin were evaluated through CCK8 assay and transwell invasion assay, respectively. Cell cycles and cell apoptosis were detected with flow cytometry. Finally, the effect of Stathmin in tumor formation was determined in nude mice. RESULT: DNA sequencing and viral titer assay indicated that the lentiviral interference vector was successfully established with a viral titer of 4 × 108 TU/ml. According to the results from Western Blotting, Stathmin protein expression level decreased significantly in the U373 and U87-MG cells after transfected with pLV3-si-Stathmin, respectively, compared with those transfected with pLV3-NC. In glioblastoma cells, the cell proliferation and migration were greatly inhibited after the downregulation of Stathmin protein. Flow cytometry showed that much more cells were arrested in G2/M phasein Stathmin downregulated group, compared with the non-transfection group and NC group. But Stathmin downregulation did not induce significant cell apoptosis. Tumor formation assay in nude mice showed that tumor formation was delayed after Stathmin downregulation, with a reduction in both tumor formation rate and tumor growth velocity. CONCLUSION: Stathmin downregulation affected the biological behaviors of U373 and U87-MG glioblastoma cells, inhibiting the proliferation and migration of tumor cells. Stathmin gene may serve as a potential target in gene therapy for glioblastoma.
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Animals , Mice , Down-Regulation/genetics , Glioblastoma/metabolism , Cell Proliferation/genetics , Stathmin/genetics , Transfection , Glioblastoma/genetics , Glioblastoma/pathology , Cell Line, Tumor , Stathmin/metabolism , Genetic VectorsABSTRACT
ABSTRACT Diverse communities of bacteria inhabit plant tissues and those bacteria play a crucial role for plant health and growth. Tree peony (Paeonia Sect. Moutan) is known for its excellent ornamental and medicinal values as Chinese traditional plant, but little is known about its associated bacterial community under natural conditions. To examine how endophytic bacteria in tree peony vary across tissues and cultivars, PCR-based Illumina was applied to reveal the diversity of endophytic bacteria in tree peony. A total of 149,842 sequences and 21,463 operational taxonomic units (OTUs) were obtained. The OTU abundance of roots was higher than leaves across other three cultivars except for 'Kinkaku' and 'Luoyanghong'. The community was composed of five dominant groups (Proteobacteria, Firmicutes, Bacteroidetes, Acidobacteria and Actinobacteria) in all samples. Endophytic bacteria community structures had changed in leaves and roots. Sequences of Pseudomonas and Enterobacteriaceae were prevalent in root samples, whereas Succinivibrio and Acinetobacter were the dominant genus in leaf samples. Otherwise, the distribution of each dominant genus among the 5 cultivars was either varied. These findings suggested that both plant genotype and tissues contribute to the shaping of the bacterial communities associated with tree peony.
Subject(s)
Bacteria/isolation & purification , Paeonia/microbiology , Biodiversity , Endophytes/isolation & purification , Bacteria/classification , Bacteria/genetics , Trees/microbiology , Polymerase Chain Reaction , Plant Roots/microbiology , Plant Leaves/microbiology , Endophytes/classification , Endophytes/geneticsABSTRACT
Objective:To study the in vitro and in vivo transdermal enhancement of one kind of arginine oligomer-chitosan ( CS-R9). Methods: In vitro mouse skin as the barrier, Franz diffusion cells were used to study the transdermal property of tinidazole ( TNZ) solution in vitro enhanced by CS-R9 using TNZ solution as the negative control and TNZ solution with Azone as the positive control. The rats were randomly divided into three groups, TNZ solution group ( the negative group) , TNZ solution with Azone group (the positive group) and TNZ solution with CS-R9 group. At the predetermined time intervals, 0. 5 ml blood was withdrawn from the rats and TNZ concentration was detected by HPLC to evaluate the enhancement of CS-R9 on TNZ in vivo. Results:Compared with the negative group, CS-R9 had significant enhancement on TNZ trandermal penetration in vitro(P 0. 05). The in vivo results showed CS-R9 exhibited similar transdermal enhancement on TNZ as Azone at the same concentration (P>0. 05), and CS-R9 had sustalned-release property. Conclusion: CS-R9 has promising transdermal en-hancement on TNZ, which is valuable to be studied further.