Effect of boschniakia rossica polysaccharides on hypoxia/reoxygenation-induced cardiomyocyte damage by down-regulating miR-302a-3p expression / 中国药理学通报

Aim To explore the effect of boschniakia rossica polysaccharides ( BRPS ) on cardiomyocyte damage induced by hypoxia/reoxygenation (H/R) and its possible mechanism. Methods H/R was used to induce rat cardiomyocyte H9c2 to establish a cell inju¬ry model, and different doses of BRPS were used to treat H9c2 cells. ELISA method was used to detect the level of MDA and the activity of SOD and GSH-Px. Flow cytometry was used to detect the rate of apopto-sis. qRT-PCR was used to detect the expression of miR-302a-3p. anti-miR-NC and anti-miR-302a-3p were respectively transfected into H9c2 cells and then subjected to H/R treatment. miR-NC and miR-302a-3p mimics were respectively transfected into H9c2 cells and treated with 100 mg • L

Clinical analysis of combined immunotherapy in patients with malignant pleural mesothelioma / 中华肿瘤杂志

Objective: To observe the present situation, efficacy and safety of immunotherapy in patients with malignant pleural mesothelioma (MPM). Methods: The data of 39 patients with MPM in two centers from 2016 to 2021 were collected and the efficacy and safety were evaluated. According to the application of immune checkpoint inhibitors (ICIs), these patients, whose median clinical follow-up amounting to 18.97 months, were divided into immunotherapy group (19 cases) and control group (20 cases). Kaplan-Meier method and Log-rank test were used for the survival analysis. Results: The objective response rate (ORR) and the disease control rate (DCR) in the immunotherapy group is 21.05% and 79.0% respectively, compared with 10.0% and 55.0% in the control group; and the difference was not statistically significant (P>0.05). The median overall survival (OS) in the immunotherapy group was significantly longer than that in the control group (14.53 months vs 7.07 months, P=0.015), but there was no significant difference in the median progression free survival (PFS) between two groups (4.80 months vs 2.03 months, P=0.062). Single factor survival analysis showed that the nature of pleural effusion, pathological subtype and the efficacy of immunotherapy were related to both PFS and OS of the patients with MPM (P<0.05). The incidence of adverse reactions in immunotherapy group was 89.5% (17 out of 19 cases), and the most common adverse event was hematological toxicity (9 cases), followed by nausea and vomiting (7 cases), fatigue (6 cases) and skin damage (6 cases). Five patients had immune checkpoint inhibitors (ICIs) related adverse reactions with grade 1-2. Conclusions: Patients with MPM have begun to receive immunotherapy in more than 2-line mainly combined chemotherapy in the real world, and the median treatment line is 2-line. Either combined with chemotherapy or anti-angiogenesis therapy, ICI inhibitors have significant efficacy, controllable adverse events and good clinical value.

Composition changes reveal relationship between color and enzymatic reaction of Magnoliae Officinalis Cortex during "sweating" process / 中国中药杂志

In this study, we employed Q Exactive to determine the main differential metabolites of Magnoliae Officinalis Cortex du-ring the "sweating" process. Further, we quantified the color parameters and determined the activities of polyphenol oxidase(PPO), peroxidase(POD), and tyrosinase of Magnoliae Officinalis Cortex during the "sweating" process. Gray correlation analysis was performed for the color, chemical composition, and enzyme activity to reveal the effect of enzymatic reaction on the color of Magnoliae Officinalis Cortex during the "sweating" process. Magnoliae Officinalis Cortex sweating in different manners showed similar metabolite changes. The primary metabolites that changed significantly included amino acids, nucleotides, and sugars, and the secondary metabolites with significant changes were phenols and phenylpropanoids. Despite the different sweating methods, eleven compounds were commonly up-regulated, including L-glutamic acid, acetylarginine, hypoxanthine, and xanthine; six compounds were commonly down-re-gulated, including L-arginine, L-aspartic acid, and phenylalanine. The brightness value(L~*), red-green value(a~*), and yellow-blue value(b~*) of Magnoliae Officinalis Cortex kept decreasing during the "sweating" process. The changes in the activities of PPO and POD during sweating were consistent with those in the color parameter values. The gray correlation analysis demonstrated that the main differential metabolites such as amino acids and phenols were closely related to the color parameters L~*, a~* and b~*; POD was correlated with amino acids and phenols; PPO had strong correlation with phenols. The results indicated that the color change of Magnoliae Officinalis Cortex during "sweating" was closely related to the reactions of enzymes dominated by PPO and POD. The study analyzed the correlations among the main differential metabolites, color parameters, and enzyme activities of Magnoliae Officinalis Cortex in the "sweating" process. It reveals the common law of material changes and ascertains the relationship between color changes and enzymatic reactions of Magnoliae Officinalis Cortex during "sweating". Therefore, this study provides a reference for studying the "sweating" mechanism of Magnoliae Officinalis Cortex and is of great significance to guarantee the quality of Magnoliae Officinalis Cortex.

Analysis of Equivalence Between Traditional and Nontraditional Medicinal Varieties of Citri Reticulatae Semen from Sichuan Province / 中国实验方剂学杂志

Objective:To study the differences in genetic relationship， shape， size， and flavonoid content between traditional and nontraditional medicinal varieties of Citri Reticulatae Semen produced in Sichuan province as well as their equivalence. Method:Six batches of traditional medicinal Citri Reticulatae Semen （<italic>Citrus reticulata</italic> 'Dahongpao'） and 23 batches of nontraditional medicinal varieties were collected， and their genetic relationship was explored using sequence-related amplified polymorphism （SRAP） markers. Following the observation of their shapes and sizes under a stereomicroscope， the contents of naringin， hesperidin， and neohesperidin were measured by high performance liquid chromatography （HPLC）. SIMCA 14.1 software was used for cluster analysis of their shapes， sizes， and flavonoid contents， thus figuring out the similarities between the traditional and nontraditional medicinal varieties in character， size， and chemical components. Result:SRAP markers-based genetic relationship analysis effectively distinguished different Citri Reticulatae Semen varieties from each other. Some samples collected from the same or adjacent places exhibited a close genetic relationship and they shared high similarities in shape， size， and flavonoid content. However， the traditional medicinal Citri Reticulatae Semen was still quite different from most nontraditional medicinal varieties. Conclusion:The analysis of differences in genetic materials， appearance， character， and active ingredient content between the traditional and nontraditional medicinal varieties revealed that the equivalence<italic> </italic>of <italic>C.</italic> <italic>reticulata</italic> 'Ponkan' samples from some regions with the traditional medicinal variety was the largest， enabling them to be considered as the emerging medicinal variety.

Epidemiological investigation of tinnitus in Sichuan and Chongqing / 中华耳鼻咽喉头颈外科杂志

Objectives: To investigate the prevalence and associated risk factors of tinnitus in Sichuan and Chongqing. Methods: We designed a tinnitus epidemiological questionnaire. The multi-stage stratified cluster random sampling methods was applied to obtain study subjects in six areas (Nanchong, Jiangjin, Fengdu, Yunyang, Suining and Ya'an), which were selected for epidemiological investigation. Home visit completion of epidemiological questionnaires was conducted. The trained investigators guided the respondents to fill in the tinnitus epidemiological questionnaires, and the epidemiological status of six areas on prevalence and risk factor was investigated. SPSS 22.0 software was used for statistical analysis. Results: Sampling population were 10 289, in which 9 273 were valid questionnaires. There were 4 281 males and 4 992 females, with an average age of 47.3 years, among which 34.83% (3 230/9 273) had tinnitus. 3.99% (370/9 273) were diagnosed with bothersome tinnitus. In a multivariable logistic regression mod, the following factors were associated with onsetting of tinnitus: sleep disorder [Odds Ratio(OR)=3.74] and noise exposure(OR=1.99). The risk of disease was lowest in the age of 30-40 years old, while the risk of disease was higher for people under 30 and over 40. In another multivariable logistic regression mode, the following factors were associated with having bothersome tinnitus: older people were more likely to suffer from tinnitus, sleep disorders (OR=4.68) and noise exposure (OR=1.56). Conclusions: The prevalence of tinnitus in Sichuan and Chongqing is about 34.83%, but most of the tinnitus is short-lived and has low loudness, which will not affect the patients. Only a small number of patients with tinnitus (3.99%) persist and affect their health and need treatment. The occurrence and exacerbation of tinnitus may be related to sleep, age, and noise exposure.

Effects and mechanisms of sodium ibandronate in ovariectomy-induced osteoporosis rats / 中国组织工程研究

BACKGROUND: Bisphosphonates are a novel inhibitor of bone resorption that can inhibit the activity and function of osteoclasts. OBJECTIVE: To observe the effects of sodium ibandronate on the expression of dentin matrix protein 1, Caspace3, Bcl-2 and Bax in condylar cartilage in osteoporosis rats. METHODS: Thirty-six female rats were randomly divided into sham group, osteoporosis group and sodium ibandronate group, twelve in each group. The sham group did not excise ovaries during surgery. Bilateral ovaries of rats were removed in the osteoporosis and sodium ibandronate groups. On the 7th day after operation, rats in the sodium ibandronate group were intraperitoneally given sodium ibandronate 10 µg/kg, once every 7 days. After 90 days, the rat ovaries were taken. Bone mineral density was measured in each group. The changes of condylar cartilage were observed by toluidine blue staining and TUNEL staining. The expression of dentin matrix protein 1 protein was detected by immunohistochemistry. The levels of Caspase3, Bcl-2 and Bax were detected by western blot assay. The study protocol was approved by the Animal Ethics Committee of Nanhua Hospital in China with the approval No. SLXD_201804010. RESULTS AND CONCLUSION: Compared with the sham group or sodium ibandronate group, the bone mineral density in the osteoporosis group was significantly decreased (P < 0.05). The results of toluidine blue staining showed that the hypertrophic layer of condylar cartilage in the sodium ibandronate group was significantly thicker than that in the osteoporosis group. Compared with the sham group or sodium ibandronate group, the number of apoptotic cells in condylar cartilage and subchondral bone increased significantly in the osteoporosis group (P < 0.05). The expression of dentin matrix protein 1 protein was significantly lower in the osteoporosis group than the sham group, but it increased after treatment with sodium ibandronate (P < 0.05). Compared with the sham group, the expression of Caspase 3 and Bax in the osteoporosis group increased significantly, and the expression of Bcl-2 decreased. However, treatment with sodium ibandronate decreased the expression of Caspase 3 and Bax and increased the expression of Bcl-2 significantly. Overall, our findings reveal that sodium ibandronate can inhibit the apoptosis of condylar chondrocytes and the number of osteoclasts in osteoporotic state, which may be related to the regulation of Caspase 3, Bcl-2, Bax and dentin matrix protein 1 expression.

Microbial community diversity and its characteristics in Magnolia Officinalis Cortex "sweating" process based on high-throughput sequencing / 中国中药杂志

Magnolia Officinalis Cortex has been used as a traditional Chinese herb for thousands of years in China. According to Chinese Pharmacopoeia,the processing of Magnolia Officinalis Cortex needs " sweating" or " Fahan",which was a special drying process and considered to be an important symbol for high quality and genuine medicinal materials. In this unique processing mode,Magnolia Officinalis Cortex's microbial community structure may be changed,but little is known about microbial diversity during the " sweating". In this study,to analyze the change and its change rules of microbial community of Magnolia Officinalis Cortex in the whole process of " sweating",and find out the microbial community that affects the quality of Magnolia Officinalis Cortex in the process of its " sweating",and provide a basis for further research on the microbial transformation of Magnolia Officinalis Cortex,MiSeq highthroughput sequencing was used to evaluate the microbial diversity of natural " sweating" of Magnolia Officinalis Cortex. In this research,334 genera fungi and 674 genera bacteria were identified. The dominant species weren' t obvious during the early stage of " sweating". Candida was the dominant fungal species( 45. 01%-71. 93%) during the medium " sweating" stage. Aspergillus is the dominant fungal species( 45. 83%-95. 51%) during the late stage of " sweating". Moreover,Enterobacter and Klebsiella were the primary bacterial genus( ≥56. 05%) during the middle and late stages of " sweating". In addition,the predominant bacteria in the process of " sweating" included Bacillus,Deinococcus,Sphingomonas,Hymenobacter and Jatrophihabitans. In conclusion,the microbial diversities and the main dominant fungi and bacteria in the process of " sweating" of Magnolia Officinalis Cortex were initially determined. It was also found that the metabolism of Aspergillus and Candida may be related to the character formation,which were sweet odor and brown inner surface after " sweating". The results provide a theoretical basis for the study of the influence of different microorganisms on the excellent traits formation of " sweating" Magnolia Officinalis Cortex.

Early effectiveness of mini-Swashbuckler approach for distal femoral type C fractures / 中国修复重建外科杂志

Objective: To explore the early effectiveness and advantages of mini-Swashbuckler approach in treatment of distal femoral type C fractures by comparing with Swashbuckler approach. Methods: A retrospective analysis was made on 43 patients with distal femoral type C fractures between January 2014 and June 2018. Twenty-two patients were treated with open reduction via mini-Swashbuckler approach and internal fixation with less invasive stabilization system (LISS) plate in modified group; and 21 patients were treated with open reduction via Swashbuckler approach and internal fixation with LISS plate in traditional group. There was no significant difference in age, gender, cause of trauma, fracture classification, fracture side, interval between injury and operation, and complications between the two groups ( P>0.05). The operation time, intraoperative blood loss, intraoperative fluoroscopy times, hospitalization time, fracture healing time, Hospital for Special Surgery (HSS) scores of the knee, and postoperative complications were recorded and compared between the two groups. Results: The operation successfully completed in both groups. The operation time of the modified group was significantly longer than that of the traditional group, the fluoroscopy times was increased and the blood loss was reduced, the differences were significant ( P0.05). Conclusion: Compared with Swashbuckler approach, mini-Swashbuckler approach has limited visual field exposure, which leads to prolonged operation time and increased fluoroscopy times, but the risks of complications do not increase. Because of its small soft tissue injury and less blood loss, it is conducive to the recovery of knee joint function after operation.

Cloning and expression analysis of MYB transcription factor genes in safflower / 药学学报

Safflower is a dried flower of the annual herbaceous plant safflower (Carthamus tinctorius L.). As a traditional Chinese medicine, it was widely used in the regulation of blood circulation. Flavonoids are the main active ingredients in safflower. MYB transcription factors are involved in the regulation of flavonoids. The cloning and expression analysis of MYB transcription factor genes in safflower is of great significance, not only for clarifying the regulation mechanism of flavonoids biosynthesis in safflower, but also for the artificial regulation of flavonoid biosynthesis in safflower. Based on the transcriptome data, we used iTAK to annotate the MYB transcription factors in safflower. The MYB transcription factors were cloned and their sequences were analyzed. Besides, their expressions were analyzed by a Real-time PCR. In the experiment, eight long fragment MYB transcription factors were screened and six MYB transcription factors was successfully cloned, named CtMYB-TF1, CtMYB-TF2, CtMYB-TF4, CtMYB-TF5, CtMYB-TF6 and CtMYB-TF7, respectively. The six MYB transcription factors had the core domain of MYB transcription factor family, and evolutionary analysis showed that the CtMYB-TF7 transcription factor was closely related to the factors AtMYBL2 and AtMYB12. Expression analysis showed that the expression of CtMYB-TF5, CtMYB-TF6 and CtMYB-TF7 was low in roots, stems and leaves, and was high in the flower. The results provide a foundation for study of mechanism of molecular regulation of safflower flavonoids.

Filtration of the Best Medicine Concentration for Treatment of Open Soft Tissue Damage with the Improved Gudaofang / 现代医院

Objective To observe the clinical efficacy of improved Gudaofang at different concentrations for the treatment of soft tissue damage so as to determine its optimal concentration.Methods 150 patients with open soft tissue damage treated in our hospital from June 2014 to June 2016 were randomly divided into treatment Group A (n=40) and Group B (n=40), Group C(n=30)and control Group D (n=40).Group A, Group B and Group C were treated with 10%, 20%, 30% of improved Gudaofang respectively, while the control Group D was treated with 75% of alcohol.Its clinical efficacy was evaluated by tenderness score and swelling degree.Results Compared with post-treatment, different concentrations of improved Gudaofang significantly reduced the tenderness score and swelling degree (P<0.05).The total effective rate of Group A, Group B, Group C were 92.5%, 97.5% and 97.5%, respectively, were significantly better than the control Group D with 77.5% (P<0.05).Conclusion Different concentrations of improved Gudaofang has a certain clinical efficacy on treating open soft tissue damage.20% concentration of improved Gudaofang has the best cost-effective and is optimal drug concentration.

Construction and characterization of host-vector balanced lethal system of attenuated Salmonella typhimurium SL1344ΔsseK1Δasd / 中国免疫学杂志

Objective:To develop a host-vector balanced lethal system of attenuated Salmonella typhinurium secreted effector K1 mutant,and an live vaccine vector which stably carries exogenous genes. Methods:We constructed SL1344ΔsseK1Δasd mutant strain by recombinant suicide plasmid( pREΔasd) ,and screened by two-step method,transformed pYA3493 plasmid containing the asd gene without resistance electric into the mutant strain of SL1344ΔsseK1Δasd, then the recombinant strain SL1344ΔsseK1Δasd (pYA3493) was constructed successfully. Results:The results of PCR and sequencing showed that SL1344ΔsseK1Δasd(pYA3493)was constructed successfully. Further studies had shown that the serotype of the recombinant strain was identical to the parent SL1344ΔsseK1 and wild SL1344 strains,and the mutant was stable with the recombinant Δasd gene in vitro. It was found that the re-combinant strain had displayed identical growth profile and biochemical characteristics compared with the parent SL1344ΔsseK1 strain and wild SL1344 strain. The oral challenge of bacteria in mice revealed that LD50 of the recombinant strain was 5. 24×108 CFU,and the toxicity reduced to about 0. 048%;the immunoprotective effect assay showed that the protection rate infected with wild strain of Salmonella typhimurium was 62. 5% on the 17th day post-immunization,which was identical to the parent SL1344ΔsseK1. Conclusion:These results show that the secreted effector K1 gene deleted mutant host-vector balanced lethal system of Salmonella typhimurium SL1344 strain has been successfully constructed,and genetic stability,significantly reduced virulence,which has laid a foundation for developing potential oral live vaccin vector to express foreign genes.

Construction and characterization of host-vector balanced lethal system of attenuated Salmonella typhimurium SL1344ΔsseK1Δasd / 中国免疫学杂志

Objective:To develop a host-vector balanced lethal system of attenuated Salmonella typhinurium secreted effector K1 mutant,and an live vaccine vector which stably carries exogenous genes. Methods:We constructed SL1344ΔsseK1Δasd mutant strain by recombinant suicide plasmid( pREΔasd) ,and screened by two-step method,transformed pYA3493 plasmid containing the asd gene without resistance electric into the mutant strain of SL1344ΔsseK1Δasd, then the recombinant strain SL1344ΔsseK1Δasd (pYA3493) was constructed successfully. Results:The results of PCR and sequencing showed that SL1344ΔsseK1Δasd(pYA3493)was constructed successfully. Further studies had shown that the serotype of the recombinant strain was identical to the parent SL1344ΔsseK1 and wild SL1344 strains,and the mutant was stable with the recombinant Δasd gene in vitro. It was found that the re-combinant strain had displayed identical growth profile and biochemical characteristics compared with the parent SL1344ΔsseK1 strain and wild SL1344 strain. The oral challenge of bacteria in mice revealed that LD50 of the recombinant strain was 5. 24×108 CFU,and the toxicity reduced to about 0. 048%;the immunoprotective effect assay showed that the protection rate infected with wild strain of Salmonella typhimurium was 62. 5% on the 17th day post-immunization,which was identical to the parent SL1344ΔsseK1. Conclusion:These results show that the secreted effector K1 gene deleted mutant host-vector balanced lethal system of Salmonella typhimurium SL1344 strain has been successfully constructed,and genetic stability,significantly reduced virulence,which has laid a foundation for developing potential oral live vaccin vector to express foreign genes.

Safflower's origin and changes of producing areas / 中国中药杂志

Human's application of safflower (Carthamus tinctorius) has a long history, but the origin remains unclear. Safflower was introduced into China for traditional Chinese medicine, and Sichuan was major producing area. However, in recent years, the main producing area is in Xinjiang province, in contrast Sichuan safflower is difficult to find. By reading relevant document literature and the production and marketing information of safflower, and having field investigation in the main producing areas, the origin of safflower and the reasons of producing areas' changes were explored. The origin of safflower is considered as the Fertile Crescent in reasonably. The change of producing areas in China is effected by the factors of natural environment and society. The suitability of producing areas and quality of safflower still need to study further.

Correlation between accumulation of flavoneand expression of functional genes in Carthamus tinctorius / 中国中药杂志

The average yield of safflower blooming from 1 to 7 day was recorded and calculated, HPLC was used to detect the percentage composition of HYSA,quercetin,naringenin and kaempferol, and the real-time PCR was used to analyze the expression of chs and chi. The average yield,percentage composition of HYSA and naringenin as well as functional genes' expression presented similar trends. The average yield reached the highest peak at the third day, showing highpositive correlation with the contents of HYSA (r=0.756,P<0.05), and significant correlation with the expression of chi (r=0.892,P<0.01). The contents of naringenin showed a high positive correlation with the expression of chs(r=0.766,P<0.05). The study provides a theory basis for the composition and regulation mechanism of the flavonoid constituents and lays foundation for molecular mechanisms which lead to the difference of quality in C. tinctorius.

Study on the role of miRNA-183 family in malignant cancer / 天津医药

MiRNAs have a close relation with the development of malignancy. As a new type of regulatory factor, miRNA plays an important role in the development and progression of tumors, and plays the role of oncogene or tumor suppressor gene. Abnormal expression of miRNA is found in tumors. Most of the abnormal expression of miRNA are related to tumor staging, malignancy, treatment and prognosis, which provides a new strategy for the evaluation of early diagnosis, treatment and prognosis of tumors. The miRNA-183 family is composed of three types of miRNAs including miRNA-96, miRNA-182 and miRNA-183. They present abnormal expressions in tumors of digestive system, urogenital system and respiratory system. More and more researches have been done on the relationship between miRNA-183 family and tumor, and the mechanism has been deeply studied.

Impact of Intraoperative Blood Pressure Control and Temporary Parent Artery Blocking on Prognosis in Cerebral Aneurysms Surgery / 中国医学科学杂志(英文版)

Objective In cerebral aneurysm clipping and embolization, blood pressure control and temporary parent artery blocking are common methods to prevent aneurysm rupture. Their influence on the prognosis is uncertain. In this study, we try to find out the association between methods above and prognostic indicators.Methods We held a retrospective analysis on patients' medical records of cerebral aneurysms surgical clipping and endovascular coiling , and recorded gender, age, diagnosis, Hunt-Hess grade, Glasgow coma scale score, treatment methods, a history of hypertension, preoperative systolic blood pressure, with or without controlled hypotension, systolic blood pressure difference before and after controlled hypotension, with or without temporary artery blocking, with or without hypertension after treated aneurysm, prognostic indicators including mortality after 1 month, intensive care unit (ICU) stay time of survivors, discharged Glasgow outcome scale (GOS) score. Prognostic indicators were regarded as dependent variable, all the factors were regarded as independent variable, and the strength analysis of influence factors on prognostic indicators was made by binary logistic regression.Results Total cases were 165, including 68 males and 97 females, with an average age of 56 (12-85) years. The mortality after 1 month was 10.9% (18 cases). The ICU stay time of survivors was 7.35 (0-67) days. GOS score at discharge was 1-3 in 40 (24.2%) patients and 4-5 in 125 (75.8%) patients. Systolic blood pressure difference before and after controlled hypotension was an independent factor influencing mortality (t=2.273, P=0.024), and the greater the difference was, the higher the mortality would be. Timely hypertension after aneurysm treated was an independent factor affecting ICU stay time of survivors and patients with hypertension had shorter ICU stay time (χ=10.017, P=0.001). Blood pressure control (χ=0.088, P=0.767) and temporary blocking (χ=1.307, P=0.253) did not show significant influence on GOS score at discharge.Conclusions Timely controlled hypertension after aneurysm clipping and embolization can significantly shorten the stay time in ICU. The degree of controlled hypotension associates with postoperative mortality, the greater systolic blood pressure difference before and after antihypertensive treatment is, the higher the mortality will be.

Salinomycin Enhances the Apoptosis of T-cell Acute Lymphoblastic Leukemia Cell Line Jurkat Cells Induced by Vincristine / 中国实验血液学杂志

<p><b>OBJECTIVE</b>This study was aimed to investigate the effect of salinomycin combined with vincristine on the proliferation and apoptosis of Jurkat cells and its possible mechanisms.</p><p><b>METHODS</b>The proliferation of Jurkat cells was examined by CKK-8 assay. Flow cytometry was used to assess cellular apoptosis. Levels of BCL-2, caspase-3, and caspase- 8 were measured by Western blot.</p><p><b>RESULTS</b>The salinomycin or vincristine, either alone or in combination, inhibited the proliferation of Jurkat cells in a dose-dependent manner. Salinomycin combined with vincristine produced more obveous inhibition of cell proliferation than either compound used alone (P<0.05). Western blot analysis showed that the combined use of Sal and VCR reduced the expression of BCL-2 protein, and increased expression of caspase 3 and caspase 8 protein, more significantly. Furthermore, combination of Sal and VCR synergistally promoted apoptosis of the Jurkat cells (P<0.05).</p><p><b>CONCLUSION</b>The combination of salinomycin and vincristine synergistically inhibits proliferation and promotes apoptosis of T-cell acute lymphoblastic leukemia Jurkat cells.</p>

Comparison of therapeutic effect of different treatments for cerebrospinal fluid leakage induced by surgical operation of spinal fracture combined with dural injury / 中华创伤杂志

Objective To compare the therapeutic effect of three treatments for cerebrospinal fluid leakage induced by surgical operation of spinal fracture combined with dural injury.Methods From June 2005 to June 2010,64 patients with cerebrospinal fluid leakage after surgery to spinal fracture combined with dural injury were analyzed.Patients were treated with positioning adjustment and incision pressure dressing (Group A,n =21),with cerebrospinal fluid leakage drainage via a lumbar percutaneous subarachnoid catheter (Group B,n =21),and with continuous wound drainage followed by catheter removing and wound closure when wound is completely healed (Group C,n =22).Time to stop cerebrospinal fluid leaking from a surgical incision,wound healing time,success rate in the primary intervention and postoperative complications were reviewed among these groups.Results In Group A,the incisional cerebrospinal fluid leakage disappeared at (19.0 ±3.9)days,with healing time of (25.0 ± 4.6)days.The primary wound healing was achieved in 13 patients but failure to the primary intervention occurred in 8 patients,of whom 6 patients presented complications which were then cured.In Group B,the incisional cerebrospinal fluid leakage disappeared at (3.0 ± 1.0) days,with healing time of (16.0 ± 2.6) days.There were 15 patients with primary wound healing but 6 patients got healing after further treatment,with no complications occurred.In Group C,there was no incisonal cerebrospinal fluid leakage or complications and all patients presented primary wound healing in a period of (13.0± 1.0)days.Healing time was shorter and success rate in the primary intervention in Group C was higher than those in Groups A and B (P ＜ 0.05).Conclusions Continuous wound drainage till catheter removal and wound closure on complete wound healing is a good choice for treating cerebrospinal fluid leakage induced by surgical operation of spinal fracture combined with dural injury,for it has advantages of good incisional healing,high success rate and few complications in the primary treatment.

Mitogen-activated protein kinase signal pathways play an important role in right ventricular hypertrophy of tetralogy of Fallot / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Tetralogy of Fallot (TOF) is the most common malformation of children with an incidence of approximately 10% of congenital heart disease patients. There can be a wide spectrum to the severity of the anatomic defects, which include ventricular septal defect, aortic override, right ventricular outflow tract obstruction, and right ventricular hypertrophy. We examined the relationship between right ventricular hypertrophy in patients with TOF and the gene expression of factors in the mitogen-activated protein kinase (MAPK) signal pathway.</p><p><b>METHODS</b>To gain insight into the characteristic gene(s) involved in molecular mechanisms of right ventricular hypertrophy in TOF, differential mRNA and micro RNA expression profiles were assessed using expression-based micro array technology on right ventricular biopsies from young TOF patients who underwent primary correction and on normal heart tissue. We then analyzed the gene expression of the MAPK signal pathway using reverse transcription-polymerase chain reaction (RT-PCR) in normals and TOF patients.</p><p><b>RESULTS</b>Using the micro RNA chip V3.0 and human whole genome oligonucleotide microarray V1.0 to detect the gene expression, we found 1068 genes showing altered expression of at least two-fold in TOF patients compared to the normal hearts, and 47 micro RNAs that showed a significant difference of at least two-fold in TOF patients. We then analyzed these mRNAs and micro RNAs by target gene predicting software Microcosm Targets version 5.0, and determined those mRNA highly relevant to the right ventricular hypertrophy by RT-PCR method. There were obvious differences in the gene expression of factors in the MAPK signal pathway when using RT-PCR, which was consistent to the results of the cDNA microarray.</p><p><b>CONCLUSION</b>The upregulation of genes in the MAPK signal pathway may be the key events that contribute to right ventricular hypertrophy and stunted angiogenesis in patients with TOF.</p>

Comparison of multi-slice spiral CT portography and endoscopy in the diagnosis of esophageal and gastric varices in liver cirrhosis / 中华放射学杂志

Objective To study the correlation of multi-slice CT portography (MSCTP) and digestive endoscopy in the diagnosis and evaluation of esophageal and gastric varices (EGV) caused by cirrhosis.Methods A total of 92 patients with cirrhosis were enrolled in the prospective study.All the patients were examined by endoscopy and 64-slice spiral CT scan in 4 weeks.The types,grading of EGV were observed by endoscopy and MSCTP,and Kappa conformance test was applied with the endoscopic findings as gold standard.The sensitivity,specificity,consistency,and Youden index were evaluated for the diagnosis of sophageal and gastric varices by MSCTP.Results Sixty-five patients were diagnosed to have EGV by endoscopy and 27 were negative.The positive patients included 45 patients of GOV1,19 of GOV2 and 1 patient of IGV1.MSCTP diagnosed 67 cases of EGV and 25 patients of negative results.The positive patients included 46 of GOV1,18 of GOV2 and 3 of IGV1.Two patients of IGV1 varicose veins without positive findings on endoscopy were diagnosed by using MDCTP,which revealed isolated varicose veins under the gastric mucosa.There was high consistency between MSCTP and EGV in the diagnosis of EGV (Kappa =0.732,P ＜ 0.01).The sensitivity of MSCTP was 93.8％,specificity was 77.8％,consistency was 89.1％,and Youden index 71.6％.There was high consistency between MSCTP and EGV in the classification of EGV (Kappa values were 0.743 and 0.763,P ＜ 0.01).Conclusions There is high consistency between MSCTP and digestive endoscopic in the diagnosis and classification of EGV in cirrhosis.MSCTP is superior to endoscopy in the detection of gastric varices.