Implementation of mind mapping with problem-based learning in prosthodontics course for Chinese dental students.

BACKGROUND: The traditional Chinese dentistry classroom teaching model focuses on the instruction of knowledge details, but less on the frameworks and learners' motivation. Here, we introduced a combination of mind mapping and PBL instruction (MBL)into the prosthodontics course for Chinese dental students. This study aimed to evaluate the effectiveness and efficiency of MBL in prosthodontics and make observations from the students' perspectives, based on their response with the learning process. METHODS: We prospectively enrolled 56 fourth-year undergraduates of stomatology, and these participants were randomly allocated into either the combined mind map teaching group (MBL) or the problem-based learning group (PBL) to attend the prosthodontics course. An anonymous questionnaire was also administered to both groups to evaluate the students' perceptions and experiences, using closed and open-ended items. Data were analyzed using descriptive statistics and thematic analysis. RESULTS: The students' responses to closed items indicate their experience in PBL and MBL to be positive, including increased motivation, improved memory of knowledge, enhanced discipline connection and raised teamwork, with fairly higher ratings for the MBL group. However, the tutor-guided competence scores including the memory and framework part, were significantly higher for MBL group than PBL group (two-way ANOVA, p < 0.01, p < 0.001, respectively). Meanwhile, the self-perceived competence scores including the motivation, framework and teamwork part, were significantly higher for MBL group than PBL group (two-way ANOVA, p < 0.01, p < 0.001, p < 0.05, respectively). CONCLUSION: Our findings suggest that MBL teaching approach can help in integration of knowledge structure and enhance clinical reasoning. MBL is an effective and well-organized method in prosthodontics course for dental students.

Clinical and endoscopic characteristics of adult celiac disease / 中华内科杂志

Objective:The study aimed to analyze the clinical and endoscopic characteristics of adult celiac disease (CD) to provide a scientific basis for more effective CD diagnosis and treatment.Methods:In this cross-sectional study, the clinical and endoscopic data of 96 adult CD patients treated in the Department of Gastroenterology of the People′s Hospital of Xinjiang Uygur Autonomous Region from March 2016 to December 2021 were retrospectively collected and analyzed.Results:A total of 96 CD patients were diagnosed, including 33 men and 63 women. The average age was 47±14 years (range, 18-81 years). The disease occurred mainly in the age group of 31-60 years. The median course of the disease was 2.0 (0.2-40.0) years. There were 41 (42.7%) classical and 55 (57.3%) non-classical CD patients. All patients with classical CD showed chronic diarrhea, often accompanied by abdominal pain (46.3%, 19/41), abdominal distension (17.1%, 7/41), anemia (65.9%, 27/41), and chronic fatigue (48.8%, 20/41). The main manifestations of non-classical CD were chronic abdominal pain (58.2%, 32/55), abdominal distension (32.7%, 18/55), anemia (40.0%, 22/55), and osteopenia/osteoporosis (38.2%, 21/55). Compared with non-classical CD, anemia developed more frequently in classical CD, and the difference was statistically significant ( P = 0.012). The incidence of complications in CD patients was 36.5% (35/96), and the main complications were thyroid disease (19.8%, 19/96), connective tissue disease (6.2%, 6/96), and kidney disease (6.2%, 6/96). There was no significant difference between classical and non-classical CD ( P>0.05). The frequency of endoscopic manifestations in CD patients was 84.4% (81/96). Duodenal bulb endoscopy showed nodular changes (72.9%, 70/96), grooved changes (10.4%, 10/96), and focal villous atrophy (9.4%, 9/96). The main manifestations of descending endoscopy were the decrease, flattening, or disappearance of duodenal folds (43.8%, 42/96), scallop-like changes (38.5%, 37/96), and nodular changes (34.4%, 33/96). Conclusions:Adult CD patients are mostly female. CD occurred mainly in the age group of 31-60 years. The clinical manifestations were mainly those of non-classical CD. Some patients often had other autoimmune diseases. Patients with characteristic endoscopic manifestations should be warned about the possibility of developing CD. Clinicians should strengthen the understanding of CD and reduce the related rates of missed diagnosis.

Effects of 3 kinds of processing techniques on the fitness of metal clasp / 中南大学学报(医学版)

OBJECTIVES@#At present, removable partial denture is still one of the main restoration methods for dentition defects. However, the trend for digital partial denture is becoming more and more obvious in the field of oral repair. However, there are relatively few studies on digital removable partial denture. The aim of this study is to investigate the effects of 3 processing technologies (precision casting, digital cutting, and 3D printing) on the fitness for the clasps of cobalt chromium alloy and pure titanium removable partial denture, and to provide a theoretical basis for the clinical application of digital removable partial denture.@*METHODS@#Clasps of Co-Cr alloy and pure titanium were produced by 3 different processing technologies (precision casting, digital cutting, and 3D printing). There are 6 groups, including a casting pure titanium group, a casting cobalt chromium group, a cutting pure titanium group, a cutting cobalt chromium group, a printing pure titanium group, and a printing cobalt chromium group (@*RESULTS@#There was no statistical difference in fitness between the casting pure titanium group and the casting cobalt chromium group (@*CONCLUSIONS@#The cobalt chromium alloy and pure titanium clasps made by precision casting, digital cutting, and 3D printing have good fitness. Under the same process, there is no significant difference between cobalt chromium alloy and pure titanium clasps. The 3D printing pure titanium clasps have better fitness than casting pure titanium and cutting pure titanium clasps, which meet the needs of clinical application.

Clinical manifestations and pathological features of 28 cases of adult celiac disease in Xinjiang Uygur Autonomous Region, China / 中华消化杂志

Objective:To investigate the clinical manifestations and pathological features of adult celiac disease in Xinjiang Uygur Autonomous Region.Methods:From January 2016 to December 2019, the clinical data of 943 patients with gastrointestinal symptoms such as chronic diarrhea, abdominal pain, abdominal distension and visited the People′s Hospital of Xinjiang Uygur Autonomous Region were collected. All patients tested for serum anti-tissue transglutaminase antibody inmunoglobulin A (tTG-IgA). And patients with positive serum tTG-IgA underwent gastroscopy and colonoscopy examination. To observe whether duodenal and ileal mucosal villi atrophy and histopathological examination was performed. Body mass index (BMI), hemoglobin, serum calcium, serum albumin level were compared between patients with and without celiac disease. T test and chi-square test were used for statistical analysis. Results:Serum tTG-IgA was positive in 30 patients, and 28 cases were finally diagnosed as celiac disease. The detection rate of celiac disease of Kazakh patients was higher than that of Uygur and Han patients (17.3%, 9/52 vs. 3.2%, 12/375 and 1.4%, 6/427), the detection rate of celiac disease of Uygur was higher than that of Han, and the differences were statistically significant ( χ2=7.65, 5.42 and 5.98, all P<0.05). The main clinical manifestations of 28 patients with celiac disease were weight loss or marasmus (71.4%, 20/28), iron deficiency anemia (67.9%, 19/28), persistent fatigue (57.1%, 16/28) and chronic diarrhea (53.6%, 15/28). The serum tTG-IgA level of patients with celiac disease was higher than that of patients without celiac disease ((131.97±64.58) CU vs. (7.58±1.92) CU), while the levels of BMI, hemoglobin, serum calcium and serum albumin were all lower than those of patients without celiac disease ((15.4±2.9) kg/m 2 vs. (23.8±3.4) kg/m 2, (110±28) g/L vs. (138±12) g/L, (1.70±0.20) mmol/L vs. (2.52±0.15) mmol/L, and (31.5±11.6) g/L vs. (48.2±7.3) g/L, respectively), and the differences were statistically significant ( t=2.473, 2.521, 2.641, 2.734 and 2.512, all P<0.05). Under gastroscopy all patients with celiac disease had atrophy of duodenal mucosal villi, which mainly appeared as nodular mucosal atrophy, grooves and fissure like changes, and villous atrophy was confirmed by histopathology. Conclusions:The detection rates of celiac disease in Kazakh and Uyghur in Xinjiang Uygur Antonomous Region are significantly higher than that of Han nationality. Celiac disease screening has a certain clinical significance.

Single-arm external stent combined with free flap used in forearm fractures of Gustilo type Ⅲ / 中华创伤骨科杂志

Objective To evaluate the clinical application of single-arm external stent combined with free flap in the treatment of forearm fractures of Gnstilo type Ⅲ.Methods A retrospective study was conducted of the 16 patients who had been treated at Repair and Reconstruction Center,Traditional Chinese Medicine Hospital Affiliated to Southwest Medical University from September 2015 to January 2018 for open forearm fractures combined with soft tissue defects with single-arm external stent combined with free flap.They were 11 men and 5 women,aged from 18 to 64 years (average,41.6 years).By the Gustilo classification,9 cases were type ⅢB and 7 type Ⅲ C.The area of soft tissue defects at the upper arm and hand ranged from 7.5 cm ×5.5 cm to 16.5 cm × 11.0 cm.Emergency debridement was performed at the primary stage.After repair of major blood vessels,nerves and tendons,the reduced fractures were fixated with a single-arm external stent.The soft tissue defects were repaired with free flaps at the secondary stage.Nine cases were repaired with a free anterolateral perforating branch flap and 7 with a free ilioinguinal flap.The single-arm external stent became the ultimate fixation mode in 5 cases but was changed into plate fixation after survival of the flaps in the other 11 cases.Complications were recorded postoperatively.At the last follow-up,the upper limb function was evaluated according to the tentative criteria for evaluation of the upper limb function proposed by the Hand Surgery Society of Chinese Medical Association.Results Of all the free flaps,14 survived smoothly but 2 anterolateral ones survived only after the venous crisis appearing at 24 h after operation was relieved by exploration.The 16 patients were followed up for 9 to 18 months (average,13.5 months).The fractures united well with fine alignment of the fracture ends and recovered force line.According to the Anderson criteria for forearm fractures,10 cases were excellent,4 good and 2 fair after operation.According to the tentative criteria for evaluation of the upper limb function proposed by the Hand Surgery Society of Chinese Medical Association,11 cases were excellent and 5 good.No nail infection or nonunion occurred.Conclusion In the treatment of forearm fractures of Gustilo type Ⅲ,single-arm external stent plus free flap can effectively restore the force line of upper extremity,promote bone healing,allow reasonable timing for wound repair,reduce postoperative complications like infection and osteomyelitis and facilitate functional recovery of the affected extremity.

Single-arm external stent combined with free flap used in forearm fractures of Gustilo type Ⅲ / 中华创伤骨科杂志

Objective@#To evaluate the clinical application of single-arm external stent combined with free flap in the treatment of forearm fractures of Gustilo type Ⅲ.@*Methods@#A retrospective study was conducted of the 16 patients who had been treated at Repair and Reconstruction Center, Traditional Chinese Medicine Hospital Affiliated to Southwest Medical University from September 2015 to January 2018 for open forearm fractures combined with soft tissue defects with single-arm external stent combined with free flap. They were 11 men and 5 women, aged from 18 to 64 years (average, 41.6 years). By the Gustilo classification, 9 cases were type ⅢB and 7 type ⅢC. The area of soft tissue defects at the upper arm and hand ranged from 7.5 cm×5.5 cm to 16.5 cm × 11.0 cm. Emergency debridement was performed at the primary stage. After repair of major blood vessels, nerves and tendons, the reduced fractures were fixated with a single-arm external stent. The soft tissue defects were repaired with free flaps at the secondary stage. Nine cases were repaired with a free anterolateral perforating branch flap and 7 with a free ilioinguinal flap. The single-arm external stent became the ultimate fixation mode in 5 cases but was changed into plate fixation after survival of the flaps in the other 11 cases. Complications were recorded postoperatively. At the last follow-up, the upper limb function was evaluated according to the tentative criteria for evaluation of the upper limb function proposed by the Hand Surgery Society of Chinese Medical Association.@*Results@#Of all the free flaps, 14 survived smoothly but 2 anterolateral ones survived only after the venous crisis appearing at 24 h after operation was relieved by exploration. The 16 patients were followed up for 9 to 18 months (average, 13.5 months). The fractures united well with fine alignment of the fracture ends and recovered force line. According to the Anderson criteria for forearm fractures, 10 cases were excellent, 4 good and 2 fair after operation. According to the tentative criteria for evaluation of the upper limb function proposed by the Hand Surgery Society of Chinese Medical Association, 11 cases were excellent and 5 good. No nail infection or nonunion occurred.@*Conclusion@#In the treatment of forearm fractures of Gustilo type Ⅲ, single-arm external stent plus free flap can effectively restore the force line of upper extremity, promote bone healing, allow reasonable timing for wound repair, reduce postoperative complications like infection and osteomyelitis and facilitate functional recovery of the affected extremity.

Epidemiological survey on the inpatients with injury first discharged from Department of Orthopedic Trauma, Nanfang Hospital from 2013 to 2017 / 中华创伤骨科杂志

Objective To analyze the injury causes and types in the inpatients first discharged from the Department of Orthopedic Trauma,Nanfang Hospital after treatment of injury from 2013 to 2017.Methods An epidemiological survey was conducted on the inpatients first discharged from the Department of Orthopedic Trauma,Nanfang Hospital after injury treatment from January 2013 to December 2017.Their data were extracted by information system IBM SPSS 23.0 for analyses of their gender,regional origin,distribution of injury causes and types.Results From 2013 to 2017,a total of 6,736 inpatients were first discharged after treatment of injury.The total ratio of male to female was 2.71∶ 1.Although the male to female ratios were significantly different between different years (x2 =10.755,P =0.029),the proportions of males were all over 70％.Although the distribution of regional origins of the patients was significantly different between different years (x2 =86.193,P ＜ 0.001),the patients mostly came from the regions outside the administrative district where Nanfang Hospital was located,especially those from the provinces other than Guangdong.The major external cause of injury was falling,followed by exposure to inanimate mechanical violence.There were differences in external cause of injury between different age groups.Wrist and hand injury,knee and lower leg injury,shoulder and upper arm injury were the top three sorts of injury for hospitalization.Wrist and hand injury was mainly found in the age group from 20 to 29 years old,knee and lower leg injury mostly in the age group from 30 to 39 years old,and shoulder and upper arm injury mainly in the age group younger than 10 years old,hip and thigh injury mostly in the age group older than 70 years old.Conclusions Falling was the major external cause of injury;injury predominated in males;the majority of the patients came from the regions outside the administrative district where Nanfang Hospital was located;wrist and hand injury were more common in young people while hip and thigh injury more common in the elderly.

Clinical Observation of Astragalus Injection Combined with Neoadjuvant Chemotherapy and Three Dimen-sional Conformal Radiotherapy in the Treatment of Colorectal Cancer / 中国药房

OBJECTIVE:To observe clinical efficacy and safety of Astragalus injection combined with neoadjuvant chemother-apy and three dimensional conformal radiotherapy in the treatment of colorectal cancer. METHODS:A total of 80 patients with me-dium and advanced colorectal cancer were selected from oncology department of our hospital during Jun. 2010 to Jun. 2014,and di-vided into observation group and control group according to random number table,with 40 cases in each group. Control group re-ceived neoadjuvant chemotherapy combined with three-dimensional conformal radiotherapy. Observation group was additionally giv-en Astragalus injection 10-20 mL added into 5％ Glucose injection 250-500 mL,ivgtt,qd,on the basis of control group. A treat-ment course lasted for 21 d,and both groups received 3 courses. Short-term efficacies as well as immune indexes [CD3+,CD4+, CD4+/CD8+ and NK cells] before and after treatment were observed in 2 groups. The occurrence of ADR and survival situation were compared between 2 groups. RESULTS:Clinical response rate of observation group was 87.5％,which was slightly higher than that of control group(77.5％),but there was no statistical significance(P>0.05). Before treatment,there was no statistical signifi-cance in immune index levels between 2 groups(P>0.05). After treatment,NK cells,CD3+,CD4+ and CD4+/CD8+ levels of con-trol group were decreased significantly,which was significantly lower than observation group,with statistical significance (P0.05). Two-year survival rate of observa-tion group was significantly higher than that of control group;the recurrence rate and distant metastasis rate were significantly low-er than control group,with statistical significance(P<0.05). CONCLUSIONS:Astragalus injection not only can improve therapeu-tic efficacy of neoadjuvant chemotherapy in patients with colorectal cancer,balance inflammatory state,improve survival rate,re-duce recurrence rate and distant metastasis rate with good safety.

Analysis of clinical characteristics of 22 906 gravidas with Hepatitis B Virus infection / 实用医学杂志

Objective To analyze the clinical characteristics of gravidas with HBV in Nanfang Hospital from 2008 to 2014. Methods 22 906 gravidas were retrospectively investigated. Results The HBsAg positive rates were 11.64% and 6.16% when the gravidas were divided into Cantonese and non-Cantonese groups (χ2 =193.370, P < 0.005). The ALT abnormal rates in HBeAg positive and HBeAg negative gravidas were 17.96% and 6.68% (χ2=62.594, P<0.005). Conclusion The HBsAg positive rate of gravidas in Guangdong and the ALT abnormal rate of HBeAg positive gravidas are higher.

Association Study Between the rs4373814 Polymorphisms of Calcium Channel Gene and the Susceptibility of Essential Hypertension in Han Population at Northeastern Area of China / 中国循环杂志

Objective: To investigate the relationship between rs4373814 polymorphisms of calcium channel (CACNB2) gene and the susceptibility of essential hypertension (EH) occurrence in Han population at northeastern area of China. Methods: A case-control study in Han population at northeastern of China was carried out and the research included 1998 participants as 2 groups: EH group,n=1006 patients treated in our hospital, and Control group,n=992 subjects with normal blood pressure from physical examination. The rs4373814 polymorphisms were examined by Snapshot technique and the statistical analysis was performed by SPSS 19.0 software. Results: The rs4373814 risk allele C frequency of CACNB2 gene was signiifcantly different between EH group and Control group,P=0.039, OR=1.068, 95% CI (1.004-1.137). Logistic regression analysis showed that with adjusted gender, age, BMI, smoking, drinking, in dominant model, the genotype rs4373814 carring CC + GC/GG obviously increased the risk of EH occurrence,P=0.037, OR=1.260, 95% CI (1.013-1.567). Conclusion: The rs4373814 polymorphisms of CACNB2 gene are related to the susceptibility of EH occurrence in Han population at northeastern area of China.

Association between polymorphism of ATP2B1 gene, its interaction with smoking and essential hypertension -a case-control study / 中华流行病学杂志

<p><b>OBJECTIVE</b>To investigate the association between polymorphism of ATP2B1 gene, its interaction with smoking and susceptibility of essential hypertension.</p><p><b>METHODS</b>A case-control study was conducted to elucidate the role of ATP2B1 gene variants related to the risk of essential hypertension. Genomic DNA was extracted from peripheral blood leukocytes, using the QIAamp DNA Mini Kit (QIAGEN,Germany). Two SNPs, - rs17249754 and rs6253, were examined on 1 280 patients and 1 010 healthy controls, using a Snapshot method. Statistical analyses were performed with SPSS Windows software (version 19.0;SPSS, Chicago, IL).</p><p><b>RESULTS</b>A significant difference was found in rs17249754 allele frequency between cases and controls (OR = 1.223, 95%CI: 1.083-1.381, P = 0.001). After adjustment for age, sex, BMI, smoking and drinking, the difference was still statistically significant (OR = 1.212, 95%CI:1.070-1.373, P = 0.003). In addition, data from genotype distribution analysis under different models showed that appeared significant associations between ATP2B1 gene polymorphism and essential hypertension (additive model OR = 1.469, 95%CI: 1.121-1.925, P = 0.005; dominant model OR = 1.324, 95%CI:1.029-1.704, P = 0.029;recessive model OR = 1.123, 95%CI:1.031-1.223, P = 0.008). In this study, the proportion of smokers in cases was significantly higher than that in controls (P = 0.005), but no associations between rs17249754-smoking interaction and essential hypertension were found after the adjustment for gender, age, BMI and alcohol consumption (OR = 1.024, 95% CI:0.614-1.707).</p><p><b>CONCLUSION</b>Our research findings showed that the polymorphism of ATP2B1 gene rs17249754 was significantly associated with the incidence of essential hypertension in Han population of northeastern China. However, the interaction between rs17249754 and smoking did not seem to have contributed to the occurrence of the essential hypertension.</p>

Association between polymorphism of ATP2B1 gene,its interaction with smoking and essential hypertension--a case-control study / 中华流行病学杂志

Objective To investigate the association between polymorphism of ATP2B1 gene,its interaction with smoking and susceptibility of essential hypertension. Methods A case-control study was conducted to elucidate the role of ATP2B1 gene variants related to the risk of essential hypertension. Genomic DNA was extracted from peripheral blood leukocytes,using the QIAamp DNA Mini Kit(QIAGEN,Germany). Two SNPs,-rs17249754 and rs6253,were examined on 1 280 patients and 1 010 healthy controls,using a Snapshot method. Statistical analyses were performed with SPSS Windows software(version 19.0;SPSS,Chicago,IL). Results A significant difference was found in rs17249754 allele frequency between cases and controls(OR=1.223,95%CI:1.083-1.381,P=0.001). After adjustment for age,sex,BMI,smoking and drinking,the difference was still statistically significant(OR=1.212,95%CI:1.070-1.373,P=0.003). In addition,data from genotype distribution analysis under different models showed that appeared significant associations between ATP2B1 gene polymorphism and essential hypertension(additive model OR=1.469,95%CI:1.121-1.925,P=0.005;dominant model OR=1.324,95%CI:1.029-1.704,P=0.029;recessive model OR=1.123,95%CI:1.031-1.223,P=0.008). In this study,the proportion of smokers in cases was significantly higher than that in controls(P=0.005),but no associations between rs17249754-smoking interaction and essential hypertension were found after the adjustment for gender,age,BMI and alcohol consumption (OR=1.024,95%CI:0.614-1.707). Conclusion Our research findings showed that the polymorphism of ATP2B1 gene rs17249754 was significantly associated with the incidence of essential hypertension in Han population of northeastern China. However,the interaction between rs17249754 and smoking did not seem to have contributed to the occurrence of the essential hypertension.

Association between polymorphism of ATP2B1 gene,its interaction with smoking and essential hypertension--a case-control study / 中华流行病学杂志

Objective To investigate the association between polymorphism of ATP2B1 gene,its interaction with smoking and susceptibility of essential hypertension. Methods A case-control study was conducted to elucidate the role of ATP2B1 gene variants related to the risk of essential hypertension. Genomic DNA was extracted from peripheral blood leukocytes,using the QIAamp DNA Mini Kit(QIAGEN,Germany). Two SNPs,-rs17249754 and rs6253,were examined on 1 280 patients and 1 010 healthy controls,using a Snapshot method. Statistical analyses were performed with SPSS Windows software(version 19.0;SPSS,Chicago,IL). Results A significant difference was found in rs17249754 allele frequency between cases and controls(OR=1.223,95%CI:1.083-1.381,P=0.001). After adjustment for age,sex,BMI,smoking and drinking,the difference was still statistically significant(OR=1.212,95%CI:1.070-1.373,P=0.003). In addition,data from genotype distribution analysis under different models showed that appeared significant associations between ATP2B1 gene polymorphism and essential hypertension(additive model OR=1.469,95%CI:1.121-1.925,P=0.005;dominant model OR=1.324,95%CI:1.029-1.704,P=0.029;recessive model OR=1.123,95%CI:1.031-1.223,P=0.008). In this study,the proportion of smokers in cases was significantly higher than that in controls(P=0.005),but no associations between rs17249754-smoking interaction and essential hypertension were found after the adjustment for gender,age,BMI and alcohol consumption (OR=1.024,95%CI:0.614-1.707). Conclusion Our research findings showed that the polymorphism of ATP2B1 gene rs17249754 was significantly associated with the incidence of essential hypertension in Han population of northeastern China. However,the interaction between rs17249754 and smoking did not seem to have contributed to the occurrence of the essential hypertension.

Development of ultrasound-based monitor of relative blood volume / 生物医学工程学杂志

Assessing dry weight accurately is crucial in providing effective and safe haemodialysis. Biases towards dry weight assessment may bring a series of dialysis complications. This study introduces an online detection technique of relative blood volume (RBV) based on ultrasound, which analyzes the correlation between changes in blood density and sound speed. By measuring the attenuation in sound velocity, this method was employed to calculate RBV, and then to evaluate the dry weight of patients on dialysis. TDC-GP2 time measurement chip and MSP430 Single-chip Microcontroller (SCM) were used in the system to measure the ultrasonic travel time. In the clinical trials, RBV values range between 71.3% and 108.1%, showing consistent result with Fresenius 4008S blood volume monitor (BVM). This detection method possesses several advantages, such as real time, convenient, reproducible, non-invasive, and etc.

Influence of indomethacin on the effect of interferon alpha-2b combined with low dose cytarabine on chronic myeloid leukemia / 白血病·淋巴瘤

Objective To investigate the influence of indomethacin to the unite treatment effect on chronic phase myeloid leukemia (CML-CP) with interferon alpha-2b (IFNα-2b) and low dose cytarabine (LD-Ara-C).Methods 22 CML-CP patients were randomly divided into two groups.Control groups (10 cases) injected with IFNα-2b (3 million units),injection frequency was q.o.d,the duration of treatment was about 3-18 months,cytarabine (Ara-C) by slowly intravenous driped (30 mg/d).In this treatment schedule,every course of treatment sustained 10 days,and with a 2 weeks interval.During this process,patients in treatment group were treated with hydroxyl urea only when their WBC in peripheral blood exceed 20×109/L,otherwise,discontinue it.Treatment group (12 cases),on the first day of treatment with IFNα-2b and Ara-C,added indomethacin (25 mg) through oral administration,the frequency was t.i.d.During treatment in the two group,the end point of observation was completely hematology ease,at the same time,these indicators in the two groups needed to be compared,the time when WBC begin to fall,the time when WBC fall to normal range,the time when immature cells returned to normal,the time which complete hematological remission and the highest temperature of patients after IFNα-2b was subcutaneous injected.Results The time when WBC begin to fall in treatment group was (4.2±2.7) d,and the time was (5.0±2.5) d in control group (t =0.714,P ＞ 0.05).In treatment group,the time when WBC fall to normal range was(10.0±4.5) d,and the time was (12.0±4.5) d in control group (t =1.036,P ＞ 0.05).The time when immature cells returned to normal in treatment group was (14.2±4.8) d,and the time was (19.0±3.6) d in control group (t =2.609,P ＜ 0.02).The time which complete hematological remission was achieved in control group was (45.8±5.6) d,but it was (53.9±10.5) d in control group (t =2.314,· P ＜ 0.05).Meanwhile,the fever degree after IFNα-2b was subcutaneous injected obviously achieved improvement in treatment group (x2 =12.041,P ＜ 0.005).Conclusion The advantage of indomethacin to the unite treatment with IFNα-2b and LD-Ara-C on CML mainly lays in which cound alleviated the adverse reaction such as flu-like of IFN,and more,there are synergy effect in antagonist CML.

Study on triterpenes from Solanum torvum / 中国中药杂志

<p><b>OBJECTIVE</b>To study on the chemical constituents of Solanum torvum.</p><p><b>METHOD</b>The aerial parts of S. torvum swartz were extracted with 95% alcohol and the constituents were isolated and purified by chromatographic silica gel and Sephadex LH-20. Their structures were determined by NMR and MS spectral analysis.</p><p><b>RESULT</b>Six triterpenes were isolated and identified as 3beta-acetyloleanolic acid (1), 3-O-acetyl-11alpha, 12alpha-epoxy-oleanan-28, 13beta-olide (2), oleanolic acid (3), ursolic acid (4), 2alpha-hydroxy-oleanolic acid (5), 2alpha, 3beta-dihydroxyursolic acid (6).</p><p><b>CONCLUSION</b>All compounds were obtained from this plant for the first time.</p>

The research of that Shikonin effects on VEGF production in IL-17-stimulated HaCaT cells / 中华微生物学和免疫学杂志

Objective To investigate whether IL-17 could stimulate the vascular endothelial growth factor (VEGF) production on HaCaT cells alone. We also investigated whether shikonin could inhibited the proinflamation effects of interleukin-17(IL-17) acting on HaCaT cells. MethodsWe examined the expression of VEGF by double antibody sandwich enzyme-linked immunosorbent assay ( ELISA ) and realtime polymerase chain reaction(RT-PCR) in HaCaT cells and the cell supernatant. The viability of HaCaT cells in the drug group was detected by the Cell Counting Kit-8 (CCK-8). ResultsThe expression of VEGF in different time IL-17-stimulated groups on HaCaT cells and the cell supernatant were higher than the control group( P＜0.001 ). The expression of VEGF in different drug treatment groups on HaCaT cells and the cell supematant were lower than the stimulated group by IL-17 ( P＜0. 001 ). The cell viability of different drug treatment groups have no significant difference( P＞0.05 ). ConclusionWe show that IL-17 specifically and time-dependently augmented and induced VEGF expression on HaCaT cells and the cell supernatantThen shikonin markedly inhibited the increase tengency of IL-17 effection on HaCaT cells and the cell supematant level.

Effects of G. Pentaphyllumon on photoaging skin in nake mice / 中华医学美学美容杂志

Objective To investigate G. Pentaphyllums influence on the activity of glutathione peroxidase (GSH-PX) and catalase (CAT) in the skin of hireless photoaging mice, as well as the content of hydroxyproline (HYP). At the same time, G. Pentaphyllum's effect on the hireless photoaging mice was studied. Methods Healthy KM hireless mice were randomly divided into five groups. A skin photoaging model was established by G. Pentaphyllum administration. The changes of the activity of GSH-PX, CAT and the contents of dermal hydroxyproline in the skin were then measured by biochemical methods in each group of the experiment. Results In the model group, the activity of GSHPX, CAT and the content of HYP of skin were all decreased significantly (P＜0. 05). And there were different degrees of improvements in those of the herb given groups. Conclusion G. Pentaphyllumhas the protective effect on the skin of the photoageing in the hairless mice. The mechanism may be that G. Pentaphyllum could inhibit the oxidative damages of ultraviolet and skin photoaging by increasing the synthesis of collagen in skin.

The rescue of H1N1 subtype swine influenza virus / 生物工程学报

The swine influenza virus (SIV) strain A/Swine/TianJin/01/2004(H1N1) (A/S/TJ/04) was rescued successfully by an eight-plasmid rescue system. The cDNAs of SIV 8 gene segments were synthesized by RT-PCR and cloned into the RNA polymerase I/II bidirection expression vector PHW2000 independently, resulting in 8 recombinant plasmids. The 8 recombinant plasmids were cotransfected into COS-1 cell, 30 h later TPCK-trypsin was added to 0.5 microg/mL. The COS-1 cell and supernatant were harvested 48 h after cotransfection and were inoculated into the allantoic cavity of 9-day-old specific-pathogen free (SPF) chicken eggs. The allantoic fluid of dead eggs was harvested and passaged 3 generations in SPF chicken eggs to get infective virus. The successful rescue of A/S/TJ/04 SIV was identified by hemagglutination assay, hemagglutination inhibition assay, sequence analysis and electron microscope observation. The successful rescue of SIV built a platform for the research of the relationship between genome structure and function of SIV, the mechanisms of trans-species transmission of influenza virus and for the generation of new SIV as vaccine.

Optimization of culture condition of a moderately thermophilic acidophilic Ferroplasma thermophilum / 生物工程学报

The extreme microorganisms Ferroplasma spp., play an important role in bioleaching of sulphide ores at low pH value and temperatures around 50 degrees C. Without cell wall, Ferroplasma spp. is sensitive to pulp density, shearing force and heavy metal ions. Thus it is difficult to obtain their high cell density cultures, which limits the large-scale industrial application. In this paper, the optimum culture conditions of Ferroplasma thermophilum were studied by shaking culture. The results showed that the optimum culture conditions are as follows: 50 degrees C, initial pH 0.5, 50 mL working volume in 250 mL shaking-flask, inorganic nitrogen source (NH4)2SO4. The optimum combination of FeSO4.7H2O, yeast extract and peptone was determined by orthogonal experiments, including FeSO4.7H2O 40 g/L, yeast extract 0.3 g/L, peptone 0.2 g/L. Under the optimum culture conditions, the cell density was up to 6.3 x 10(7) cell/mL, and the oxidation of 40 g/L ferrous sulfate heptahydrate was finished in less than 72 hours. The results might provide information for scale-up of archaeon culture as well as its industrial application.