Analysis of lipoprotein(a) level and related factors in healthy Tajik and Kazak adults in Xinjiang / 中华检验医学杂志

Objective:To investigate the distribution and related factors of lipoprotein(a) [Lp(a)] level in healthy Tajik and Kazak adults in China.Methods:A cross-sectional study was conducted from May to October 2021 and March to June 2022, and blood samples were collected from 2, 637 healthy Tajik adults [1 010 men, average age: (40.08±14.74) years; 1 627 women, average age: (38.27±12.90) years] in Tashkurgan Tajik Autonomous County and 1 911 healthy Kazak adults [720 men, average age: (42.10±12.26) years; 1 191 women, average age: (38.27±12.90) years] in Fuyun County of Xinjiang. Fasting blood glucose (FBG), creatinine (Cr), total cholesterol (TC), triglycerides (TG), high-density lipoprotein cholesterol (HDL-C), and Lp(a) were measured. The distribution of Lp(a) levels in different sex and age groups was compared. The Lp(a) level of Tajik and Kazakh ethnic groups was compared by Mann-Whitney U test, and correlation factors of Lp(a) level were analyzed by multiple logistic regression. Results:The distribution of Lp(a) level in Tajik and Kazak population was skewed. Lp(a) levels of Tajik and Kazak ranged from the lowest 0.40 mg/L and 0.62 mg/L to the highest 1 229.40 mg/L and 2 108.58 mg/L, respectively, and the median Lp(a) level was 78.90 (38.60, 190.20) mg/L and 103.30 (49.57, 234.27) mg/L, respectively. Median Lp(a) level of Kazak was significantly higher than that of Tjik ( P<0.001). The median Lp(a) levels of Tajik males and females were similar: 77.45 (39.80, 187.10) mg/L and 79.90 (38.60, 192.30) mg/L ( P=0.948). The median Lp(a) levels of Kazakh males and females were also similar: 109.42 (50.49, 230.38) mg/L and 99.01 (49.11, 237.25) mg/L, respectively ( P=0.578). After pooling the data of Tajik and Kazak and adjusting for age, sex, BMI, smoking, drinking, blood pressure, blood glucose and other factors, Lp(a) level was correlated with ethnic (standard partial regression coefficient 0.066, P=0.008) and LDL-C level (standard partial regression coefficient 0.136, P<0.001). Conclusions:Lp(a) level in healthy Tajik and Kazak adults varied greatly among individuals, and Kazak residents had a higher Lp(a) level than Tajik residents. There was no significant sex difference in Lp(a) level among Tajik and Kazakh, and LDL-C and ethnicity are independent factors related to Lp(a) level.

Construction and significance of prediction model for chronic obstructive pulmonary disease assessment test based on fusion deep network fused with air data / 中华健康管理学杂志

Objective:To construct a chronic obstructive pulmonary disease (COPD) assessment test (CAT) score prediction model based on a deep network fused with air data, and to explore its significance.Methods:From February 2015 to December 2017, the outdoor environmental monitoring air data near the residential area of the patients with COPD from the Respiratory Outpatient Clinics of Peking University Third Hospital, Peking University People′s Hospital and Beijing Jishuitan Hospital were collected and the daily air pollution exposure of patients was calculated. The daily CAT scores were recorded continuously. The CAT score of the patients in the next week was predicted by fusing the time series algorithm and neural network to establish a model, and the prediction accuracy of the model was compared with that of the long short-term memory model (LSTM), the LSTM-attention model and the autoregressive integrated moving average model (ARIMA).Results:A total of 47 patients with COPD were enrolled and followed up for an average of 381.60 days. The LSTM-convolutional neural networks (CNN)-autoregression (AR) model was constructed by using the collected air data and CAT score, and the root mean square error of the model was 0.85, and the mean absolute error was 0.71. Compared with LSTM, LSTM-attention and ARIMA, the average prediction accuracy was improved by 21.69%.Conclusion:Based on the air data in the environment of COPD patients, the fusion deep network model can predict the CAT score of COPD patients more accurately.

Circular RNA circ-MYBL2 inhibits the proliferation and migration of prostate cancer cells by adsorbing miR-324-3p / 国际外科学杂志

Objective:To explore the expression of circular RNA circ-MYBL2 in prostate cancer tissue and the molecular mechanism of its influence on the occurrence and metastasis of prostate cancer.Methods:From February 2017 to April 2021, 45 cases of prostate cancer tissues and paracancerous tissues from patients with prostate cancer in the Department of Urology, Jingmen No.2 People′s Hospital were selected. quantitative real-time fluorescence polymerase chain reaction (qRT-PCR) was used to detect the difference in expression of circ-MYBL2 in prostate cancer tissues and adjacent tissues, and the difference in expression of circ-MYBL2 in prostate cancer cell lines and immortalized prostate duct epithelial cells. Cell lines with low circ-MYBL2 expression were respectively transfected with circ-MYBL2 plasmid (circ-MYBL2 group) or negative control plasmid (control group). qRT-PCR was used to detect the transfection efficiency of circ-MYBL2 plasmid. CCK-8 method and cell scratch test were used to detect the effect of circ-MYBL2 on cell proliferation and migration. The starBase v2.0 software was used to predict the miRNA bound by circ-MYBL2 and the target gene of miRNA. The dual luciferase reporter gene experiment was used to verify the regulatory relationship between circ-MYBL2 and miRNA. qRT-PCR was used to detect the influence of circ-MYBL2 on miRNA expression and the influence of miRNA on target gene mRNA expression. Western blotting was used to detect the expression of target gene protein and Wnt/β-catenin signaling pathway proteins. The measurement data were expressed as mean±standard deviation ( Mean± SD), the comparison between the means of multiple samples used one-way analysis of variance, and the comparison between the means of two samples used the t-test. Results:The expression of circ-MYBL2 of DU-145 cells in prostate cancer tissue was significantly lower than that in adjacent tissues ( P<0.01). The expression of circ-MYBL2 in prostate cancer cell lines was significantly lower than that of prostate ductal epithelial cells ( P<0.01), and the expression of DU-145 cells was the lowest ( P<0.01). Compared with the control group, the expression of circ-MYBL2 of DU-145 cells in the circ-MYBL2 group increased significantly ( P<0.01), and circ-MYBL2 reduced the proliferation activity ( P<0.05) and migration ability ( P<0.01) of DU-145 cells. circ-MYBL2 acted as a sponge to adsorb miR-324-3p, and miR-324-3p complementarily bound to the suppressor of SUFU gene. circ-MYBL2 inhibited the expression of miR-324-3p ( P<0.01), SUFU gene expression was increased ( P<0.01), and Wnt/β-catenin signal pathway transduction was inhibited. Conclusion:circ-MYBL2 promotes the expression of SUFU gene by adsorbing miR-324-3p, inhibits the Wnt/β-catenin signaling pathway, thereby reducing the proliferation activity and migration ability of prostate cancer cells.

Application of 99Tc m-MDP SPECT/CT imaging in Langerhans cell histiocytosis in children / 中华核医学与分子影像杂志

Objective:To explore the clinical value of 99Tc m-methylene diphosphonate (MDP) SPECT/CT imaging in Langerhans cell histiocytosis (LCH) in children. Methods:From June 2018 to October 2019, the imaging characteristics of 99Tc m-MDP SPECT/CT imaging in 13 children (8 males, 5 females; age: 1-11 (4.2±2.8) years) with LCH confirmed by pathology and immunohistochemistry in Wuhan Children′s Hospital were analyzed retrospectively. The location, number, imaging manifestations, and maximum standardized uptake value (SUV max) of the lesions were evaluated. Results:There were 18 lesions (8 in the vertebral body, 3 in the femur, 3 in the skull, 2 in the rib, 1 in the shoulder blade, 1 in the sciatic and pubic bone) in 13 children, including 9 with single lesion and 4 with multiple lesions. Of 18 lesions, 17 showed different degrees of osteolytic bone destruction, 15 presented as soft tissue masses, and 3 showed marginal sclerosis on CT imaging. All lesions showed increased 99Tc m -MDP uptake (SUV max: 1.22-15.57 (8.67±3.19)). Conclusion:99Tc m-MDP SPECT/CT has the advantage of combining functional and morphological imaging, and is helpful in the early diagnosis, clinical classification and evaluation of curative effect of children′s LCH, which provides objective basis for clinical practice.

Acute lymphoblastic leukemia after rhabdomyosarcoma caused by germline TP53 mutation: a case report and literature review / 中华实用儿科临床杂志

Objective:To understand the hereditary cancer related to germline TP53 mutations. Methods:A retrospective analysis was performed on a case of acute lymphoblastic leukemia(ALL) secondary to rhabdomyosarcoma admitted to Wuhan Children′s Hospital in February 2019.The clinical characteristics and gene detection were analyzed, and the correlative literature was studied.Results:The patient was diagnosed with rarely pleomorphic rhabdomyosarcoma at the age of 9 months, and only underwent complete excision without subsequent chemotherapy and radiotherapy.Seven years later, without exposure to suspicious carcinogenic risk factors, she was suffered from secondary ALL, germline TP53 mutations were confirmed by mutation gene detection and genetic verification.She received the induction treatment with Vincristine+ Daunorubicin+ L-Asparaginase+ Dexamethasone(VDLD), and then achieved the complete remission.According to the literature review result, there were 1 438 mutations emerging in TP53 gene, which were dominant by missense point mutations (707 kinds). These mutations could result in early-onset tumors that commonly arose in female patients.Molecular targeted therapy through TP53 gene mutation pathway could resist tumors. Conclusions:Germline TP53 mutation screening should be recommended for the early-onset tumor with genetic predisposition, and systematical monitoring of the family is also suggested, so as to early intervene and prevent the occurrence of the second tumor.The targeted drugs for germline TP53 mutations can reduce the toxicity of radiotherapy and chemotherapy and achieve high treatment effects.

Years of potential life lost due to premature death of cardiovascular diseases among residents in Suzhou from 1987 to 2017 / 中华预防医学杂志

From 1987 to 2017, cardiovascular disease (CVD) had been ranking the first cause of death in Suzhou, and the mortality rate showed an upward trend annual percentage changes (APC=0.62%, P=0.001), while the standardized mortality rate showed a downward trend (APC=-2.65%, P<0.001). The probability of premature death of CVD declined consistently from 7.06% in 1987 to 2.00% in 2017 (APC=-4.45%, P<0.001). When the life expectancy was set at 70, the potential years of life lost rate (PYLLR) decreased from 6.35‰ in 1987 to 3.30‰ in 2017, and the standardized PYLLR decreased from 7.30‰ to 2.68‰. When the life expectancy was set at 75, the PYLLR decreased from 10.12‰ to 5.19‰, and the standardized PYLLR decreased from 11.44‰ to 3.88‰. With the increase of years, all PYLLR and standardized PYLLR showed a significantly downward trend (APC=-2.51%--3.89%, P<0.001).

The relationship between physical activity and incident hypertension in rural Chinese / 中华预防医学杂志

Objective@#To investigate the relationship between physical activity (PA) and the risk of incident hypertension among population in rural areas of China.@*Methods@#The Community Intervention of Metabolic Syndrome in China & Chinese Family Health Study (CIMIC) was conducted in 2007-2008. Data on PA, smoking, drinking, blood pressure and other variables were obtained at baseline. Then the follow-up study of incident hypertension was performed during 2012-2015. A total of 41 457 participants aged ≥18 years and free from hypertension at baseline were included in the final analyses. PA was calculated as metabolic equivalent (MET) for each participant. Cox proportional hazard models were used to explore the relationship of PA with incident hypertension according to the quartiles of PA.@*Results@#A total of 6 780 participants developed hypertension during an average follow up of 5.8 years. The annual incidence of hypertension was 2.80%. Compared to participants in the first quartile of PA, HR (95%CI) of incident hypertension decreased with the level of PA of 0.92 (0.86, 0.99), 0.72 (0.67, 0.77) and 0.70 (0.65, 0.75) for the 2nd, 3rd and 4th quartile, respectively (Ptrend<0.001). In subgroup analyses, compared to the first quartile, hazards of hypertension among normotensive participants (systolic blood pressure less than 120 mmHg (1 mmHg=0.133 kPa) and diastolic blood pressure less than 80 mm Hg) in the 2nd, 3rd and 4th quartile were 0.82 (0.70, 0.95), 0.73 (0.63, 0.85) and 0.78 (0.67, 0.90), respectively (Ptrend=0.002). Among participants with prehypertension (systolic blood pressure from 120 to 139 mmHg and/or diastolic blood pressure from 80 to 89 mmHg), similar trend for the relationship of PA and incident hypertension was also found with HR (95%CI) of 0.94 (0.87, 1.01), 0.71 (0.65, 0.77) and 0.66 (0.61, 0.71) for the 2nd, 3rd and 4th quartile, respectively (Ptrend<0.001).@*Conclusion@#There was linear trend association between PA and incident hypertension. Increased PA in daily life may be a protective factor against hypertension.

The association of fruit and vegetable intake with the changes of serum lipid levels in middle-aged and older Chinese population / 中华预防医学杂志

Objective@#To investigate the association of fruit and vegetable intake with long-term changes of serum lipid levels in middle-aged Chinese and older Chinese population.@*Methods@#The study analyzed the data collected in the 2004 and 2007-2008 cohorts of China Multicenter Collaborative Study of Cardiovascular Epidemiology. Finally, 4 495 participants from 10 groups in various regions of China, who both were followed up in the two cohorts, were included for data analysis. They were aged 41-66 years in 2004. Fruit and vegetable consumption were collected with a simple food frequency questionnaire. The percent changes (Δ%) of serum TC, TG, HDL-C and LDL-C between the two surveys were calculated. Multivariate linear regression models were used to estimate the association of fruit and vegetable intake in 2004 with percentage changes of serum lipid levels during the two surveys.@*Results@#The proportions of individuals who consumed fruits <250, 250-499 and ≥500 g/week were 24.0%, 21.8% and 54.2%, respectively. The proportions of individuals who consumed vegetables <500 and ≥500 g/day were 76.7% and 23.3%, respectively. Compared with fruit intake <250 g/week, the regression coefficients (95% CI) of ΔTC% in 250-499 and ≥500 g/week group were -1.54 (-2.71, -0.37) and -1.77 (-2.79, -0.76). And the regression coefficients (95% CI) of ΔLDL-C% were -2.43 (-4.39, -0.48) and -2.89 (-4.59, -1.19). Compared with vegetable intake <500 g/d, the regression coefficients (95%CI) of ΔTC% and ΔLDL-C% in vegetable intake ≥500 g/d group were -1.01 (-1.95, -0.06) and -1.83 (-3.41, -0.24). However, fruit and vegetable intake had no relationship with ΔTG% and ΔHDL-C%.@*Conclusion@#The consumption of fruit and vegetable was inversely related to long-term changes of TC and LDL-C in middle-aged and older population, but no association was found for changes of TG and HDL-C.

Predictive value of the GRACE discharge score on the long-term out-of-hospital coronary thrombotic events after implantation of drug-eluting stents / 中华心血管病杂志

Objective@#To evaluate the predictive value of GRACE discharge score on the long-term out-of-hospital coronary thrombotic events (CTE) after percutaneous coronary intervention (PCI) with drug-eluting stents.@*Methods@#Present study was a prospective, observational, single center study. 10 724 consecutive patients underwent PCI in Fuwai Hospital between January and December 2013 were included, stents were implanted with conventional method. After PCI, patients were prescribed aspirin 100 mg once daily indefinitely, and either clopidogrel 75 mg once daily or ticagrelor 90 mg twice daily for at least 1 year. A total of 9 782 patients were included in the final analysis after excluding patients who did not undergo successful stent implantation, who were not discharged on dual anti-platelet therapy (DAPT), who only underwent bare-metal stents, who experienced in-hospital major bleeding, stent thrombosis, myocardial infarction (MI) or death,and who lost follow up. Clinical data were collected from all patients. 9 543 patients with complete baseline data were further analyzed for risk stratification and predictive value of GRACE discharge score. CTE was defined as stent thrombosis or spontaneous myocardial infarction. All patients were followed through Fuwai Hospital Follow-up Center, and evaluated either by phone, letter, or clinic visits or at 1, 6, 12 and 24 months after PCI. Risk stratification was performed according to the GRACE discharge score, and the predictive value of the GRACE discharge score was assessed using the receiver operating characteristic (ROC) curve.@*Results@#After 2 years follow-up, there were 95 CTE among the 9 782 patients. The patients were divided into 2 groups according to the presence or absence of CTE: CTE group (95 cases) and no CTE group (9 687 cases). GRACE discharge score was significantly higher in CTE group than no CTE group (82.98±27.58 vs. 75.51±22.46, t=-2.57, P=0.012). According to risk stratification of GRACE discharge score, the patients were divided into low-risk (≤88) group (n=6 902), moderate-risk (89-118) (n=2 988) and high-risk (>118) (n=343) groups. As compared to the low-risk group, CTE risk in moderate- and high-risk groups was 1.59 times (HR 1.59, 95%CI 1.01-2.52, P=0.046) and 3.89 times higher (HR 3.89, 95%CI 1.98-7.65, P<0.001), respectively. Further analysis showed that the GRACE score had predictive value in the total cohort for CTE (area under the receiver operating characteristic (AUROC) 0.576, 95%CI 0.512-0.640, P=0.012) and in the acute coronary syndromes(ACS) subgroup for CTE: (AUROC 0.594, 95%CI 0.509-0.680, P=0.019), but not in the non-ACS subgroup: (AUROC 0.561, 95%CI 0.466-0.657, P=0.187).@*Conclusion@#GRACE discharge score can predict the long-term out-of-hospital CTE in patients undergoing PCI with drug-eluting stents and treated with DAPT, and patients can be stratified into the low-, moderate- and high-risk groups of CTE by the GRACE discharge score.

Relationship of lipid accumulation product with hypertension and diabetes among Beijing residents study / 中华预防医学杂志

Objective@#To explore the lipid accumulation product (LAP) formula for Beijing adults and to investigate the relationship between lipid accumulation product and hypertension, as well as diabetes.@*Methods@#A cross-sectional study with a representative sample of 19 606 residents in Beijing aged 18-79 years was conducted in 2011. The sex-specific hypothetical minimum waist circumference (WC) was calculated in order to obtain the more applicable LAP formula. Multivariate logistic regression was used to analyze the associations of LAP, combination of LAP and body mass index (BMI) with hypertension and diabetes.@*Results@#The LAP formula for Beijing adults was established as follows: LAP (male)= (WC-61.3) × TG, and LAP (female)= (WC-55.6) × TG. There was an obvious trend of increased risk of hypertension and diabetes with an increment in the tertiles of the LAP both in men and women. The OR (95%CI) for hypertension in the group with highest tertile LAP was 3.62 (3.11-4.22) in men, and 5.79 (4.84-6.93) in women, compared with the lowest tertile group, respectively; and the corresponding OR for diabetes was 3.47 (2.73-4.41) in men, and 4.10 (2.90-5.80) in women, respectively. Compared with the lowest tertile of LAP and normal BMI group, the OR (95%CI) for hypertension in the highest tertile of LAP and obesity group was 6.79 (5.50-8.37) in men, and 9.75 (7.76-12.25) in women, respectively; while the corresponding value for diabetes was 3.97 (2.87-5.49) in men, and 4.13 (2.78-6.14) in women, respectively.@*Conclusion@#The elevated level of LAP was associated with an increased risk of hypertension and diabetes among Beijing adults. LAP could be an important predictor for hypertension and diabetes.

Preliminary study on atherectomy for treatment of Tosaka class Ⅲ in-stent restenosis in femoropo-pliteal artery / 中国医师杂志

Objective o investigate the clinical efficacy of atherectomy in the treatment of Tosaka class Ⅲ in-stent restenosis in the femoropopliteal artery. Methods From June 2013 to December 2015, 33 restenotic lesions after femoropopliteal artery stenting were retrospectively analyzed by clinical information including technical success rate, incidence of complications, improvement of postoperative symptoms and objective indicators, and target vessel patency. Results To January 2016, twenty-eight cases were followed up. The average follow-up time was 17. 9 months. Five cases were lost. The follow-up rate was 84. 9％. The technical success rate was 100％. The patency rate was 79. 9％ at 6 months and 65. 8％ at 1 year after surgery. Conclusions Atherectomy is safe and effective for treatment of Tosaka classⅢin-stent restenosis in femoropopliteal artery with good short-term and medium-term efficacy.

Gene mutation associated with hemophagocytic lymphohistiocytosis in children / 临床儿科杂志

Objectives To detect gene mutation associated with hemophagocytic lymphohistiocytosis (HLH) and to identify mutation spectrum and clinical feature in HLH in children. Methods Thirty-seven (37) pediatric patients diagnosed with HLH according to 2004 clinical and laboratory criteria were enrolled from July 2012 to November 2015. Nucleotide sequences of all exons and their flanking intronic sequences of ten genes associated with HLH were amplified with PCR followed by direct sequencing. Point mutation analysis was performed after the direct sequencing. Results The median age of all the 37 patients was 2.6 years. The median ages of patients with gene mutation (n=22) and without gene mutation (n=15) was 2.09 years and 2.67 years, without statistical significance. Twenty-two patients were identified with gene mutations. All of them were heterozygous. UNC13D mutation (50%) is of the highest frequency in the above genes. The splicing mutations (38%) were the main type of UNC13D mutations,and missense mutations or frame-shift mutations were also found. There was no statistical difference in ages of onset and laboratory data of neutrophils, thrombocytes, NK cell activities within the three groups: multi-site mutations, single-site mutations and no mutations. EBV infection was detected in 70.3% patients. In mutation group, one patient died when he was in the period of inducing remission, and four patients were relapsed. Among them four patients were infected with EBV and one patients was negative at the onset while positive in recurrence. Conclusions UNC13D was the predominant causative gene in the Chinese population according our data. There was no significant relevance between age of onset, severity of disease and gene mutations. Attention should be paid to a patient with HLH gene mutation infected by EBV, which it might mean a poor prognosis.

A Cross-sectional Study for the Relationship Between Tea Drinking and Blood Lipids in Middle and Aged Population / 中国循环杂志

Methods: A cross-sectional study was conducted based on the data cohort of China multicenter collaborative study of cardiovascular epidemiology in 2007-2008. A total of 7227 participants were enrolled including 3304 male and 3923 female at the mean age of (55.6±7.1) years. Tea drinking information was collected by questionnaire; participants were stratified by gender and grouped by regular tea drinking. Relationship between tea drinking and blood lipids, lipoprotein levels were assessed by covariance analysis. Results: There were 3012/7227 (41.7%) participants (male: 58.9% and female: 27.2%) regularly drunk tea. With adjusted age, urban and rural, education level, cigarette smoking, alcohol drinking, body mass index (BMI), daily red meat intake, physical work intensity, exercise intensity, histories of hypertension, diabetes and hypercholesterolemia, in male gender, compared with non-regular tea drinker, regular tea drinker had decreased blood level of low density lipoprotein cholesterol (LDL-C), the difference was -0.12 mmol/L, P=0.0001 and increased triglyceride (TG), the difference was 0.11 mmol/L, P=0.0001; in female gender, regular tea drinker showed increased high density lipoprotein cholesterol (HDL-C), the difference was 0.06 mmol/L, P<0.0001. Conclusion: In our research, regular tea drinking was negatively related to blood LDL-C level and positively related to TG in male gender, while it was positively related to HDL-C in female gender; the above correlations were independent from possible influencing factors. The impact of long term regular tea drinking on blood lipids and lipoprotein levels should be further prospectively investigated in community based middle and aged population.

Non-biodegradable and biodegradable long-term subdermal contraceptive implants:advances in theoretical research and application / 中国组织工程研究

BACKGROUND:Subdermal contraceptive implants as a novel contraceptive method have been extensively used worldwide.OBJECTIVE:To review the research progress in the non-biodegradable and biodegradable long-term subdermal contraceptive implants and to explore their advantages and disadvantages.METHODS:A computer-based search of CNKI,Wanfang,and PubMed (1967-2015) was performed by the first author for relevant articles,using the key words of contraceptive implants,non-biodegradable,biodegradable in Chinese and English,respectively.Initially 240 articles were retrieved,and finally 70 articles were included in result analysis.RESULTS AND CONCLUSION:Long-term subdermal contraceptive implants that pass through the local capillaries into the blood circulation system can avoid the gastrointestinal absorption,improve the bioavailability of drugs,and reduce adverse drug reactions.According to the performance,there are two kinds of drug carriers,non-biodegradable and biodegradable.Although non-biodegradable implants have been widely used and the contraceptive effect is excellent,the implants must be removed surgically because they cannot be absorbed or metabolized in the body.Significant efforts have been devoted to developing biodegradable implants because they can degrade at the end of use.However,the utility of some biodegradable polymers as drug carriers in implantable applications has been hampered by their shortcomings,and further study on alternative materials is urgently required.

Analysis of the association of human leukocyte antigen DQ gene polymorphisms with unexplained recurrent spontaneous abortion among ethnic Han Chinese from Wenzhou region / 中华医学遗传学杂志

<p><b>OBJECTIVE</b>To assess the association of human leukocyte antigen DQ gene polymorphisms with unexplained recurrent spontaneous abortion (URSA) among ethnic Han Chinese from Wenzhou region.</p><p><b>METHODS</b>Fifty couples with URSA (URSA group) and 66 couples with normal pregnancy history (control group) were recruited. The alleles of HLA-DQA1 and HLA-DQB1 were analyzed by polymerase chain reaction with specific sequence primers (PCR-SSP) in all subjects. The frequency distribution of HLA-DQ alleles, odds ratios (OR) between each group and sharing of HLA-DQ alleles were calculated.</p><p><b>RESULTS</b>The frequency distribution of HLA-DQB1*03:03 allele in the females with URSA was significantly higher than that healthy females (21.00% vs. 9.85%, OR=2.433, 95%CI: 1.232-4.894, χ(2)=5.657, P<0.05). The HLA-DQB1*05:03 allele was present among the healthy females with a frequency of 3.03%, and was not detected among females with URSA. For both males and females, the HLA-DQB1*05:02 allele were only typed in control group with frequencies of 6.06% and 5.30%, respectively. The sharing of HLA-DQA1 alleles in couples with URSA was increased compared with the control group (70.27% vs. 44.64%, OR=2.931, 95%CI: 1.216-7.067, P<0.05).</p><p><b>CONCLUSION</b>The increased sharing of HLA-DQA1 alleles may contribute to the susceptibility of URSA among ethnic Han Chinese from Wenzhou region. The allele of HLA-DQB1*03:03 in the females may be predisposing factor for URSA. However, the HLA-DQB1*05:02 allele in both gender and HLA-DQB1*05:03 allele in females may confer a protective effect.</p>

Association between STAT3 gene and children with acute lymphoblastic leukemia / 中华实用儿科临床杂志

Objective To investigate the association between single nucleotide polymorphism (SNPs) (rs1053005 and rs744166) and expression level of STAT3 gene and the susceptibility to acute lymphoblastic leukemia (ALL) in Chinese children.Methods A case-control study was performed,and 184 children with ALL and 377 healthy children as controls were recruited.The genotypes of 2 SNPs were detected by using polymerase chain reaction-restriction fragment length polymorphism method.And the expression level of STAT3 gene was detected by using real-time PCR;All the data were analyzed by using SPSS 16.0 software.Results (1) In this study,the genotypes (GG,AG,AA) of rs1053005 had a significant difference between the ALL group and control group (x2 =6.737,P =0.034).Compared with control group,the A allele had a higher frequency in ALL group and A allele was a risk factor(x2 =5.853,P =0.016).But,there was no difference in frequency of genotype rs744166 between the 2 groups (x2 =1.866,P =0.393).(2) There was no significant association between genotypes and risk degree among 3 groups (high risk group,medial risk group and standard risk group) (x2 =0.335,P =0.987).(3) The expression level of STAT3 gene in patients with AA genotype was lower than that of the patients with GG genotype (t =4.758,P =0.009);and compared with patients of the standard risk group,high risk patients had a lower expression level of STAT3 gene (t =5.284,P =0.007).Conclusions The polymorphism of SNP rs1053005 was associated with ALL,with A allele being a risk factor;and the expression level of STAT3 gene maybe associated with the risk degree in ALL patients.

Establishment and evaluation of a diabetic rat model of hindlimb ischemia / 中国实验动物学报

Objective To establish a diabetic rat model of hindlimb ischemia, and provide a test method for dia-betic limb ischemia and diabetic foot study.Methods Twenty-five Wistar rats were divided into three groups:the model group and control group ( n=10) , and sham operated group ( n=5) .The rats of model group were induced by intraperito-neal injection of streptozotocin ( STZ, 60 mg/kg) , with the blood glucose level over 16.8 mmol/L, while the rats of control group were injected with normal saline.All the rats had the left femoral artery and its branches ligated, and then Doppler scan blood flow analysis was performed for the two hind limbs after operation at different time points.In the meantime, the changes of body weight and blood glucose were observed.The animals were sacrificed at 21days after operation.HE stai-ning was used to observe the pathological changes of gastrocnemius and femoral arteries.Capillary density and intima hyper-plasia were examined using immunostaining for CD31 and a-SMA.Results Blood glucose of the model group rats was sig-nificantly increased as well as the quantity of urine and feces,and associated with weight loss, which were maintained for more than 21 days.The blood flow of control rats was markedly decreased immediatly after operation, reached to the lowest point after surgery, and recovered from 7 -14 days after operation.In contrast to the control group, the model group showed a marked reduction in blood flow in the ischemic hind limb.Pathological examination revealed remarkable vascular atrophy and a significantly reduced number of vessels per high power field in the gastrocnemius muscle of model group rats with respect to the control group, and the femoral arteries of model rats were more narrowed than that of the control rats. Conclusions In this study, an effective, convenient diabetic rat model of hindlimb ischemia is successfully established which will facilitate the studies of drug intervention for diabetic limb ischemia and diabetic foot in the future.

Analysis on bacterial culture and drug resistance of 2 125 blood specimen / 国际检验医学杂志

Objective To analyze distribution and drug resistance of pathogenic bacteria isolated from blood specimens of inpa-tients,so as to guiding the principle of clinical use of antibacterials and improve clinical efficacy.Methods The results of bacterial culture and drug sensitivity test of 2 125 blood specimens,from November 2012 to November 2014,in the Rizhao Hospital of Tradi-tional Chinese Medicine were retrospectively analyzed.Results A total of 233 strains of pathogens were isolated(the positive rate was 10.96%),including 57 strains of gram-positive coccus(accounted for 24.46%)and 1 74 strains of gram-negative bacilli(accoun-ted for 74.68%).The coagulase-negative staphylococci and Staphylococcus aureus were most common in gram-positive coccus,the detection rate of methicillin-resistant coagulase-negative staphylococci (MRCNS)and methicillin-resistant Staphylococcus aureus (MRSA)were 84.2% and 40.0%,respectively.The rate of drug resistance of coagulase-negative staphylococci and Staphylococcus aureus to penicillin,erythromycin and clindamycin were no less than 80.0%.The Escherichia coli,Klebsiella pneumoniae and Pseud-omonas aeruginosa were most common in gram-negative bacilli,the detection rate of extended spectrum beta-lactamases(ESBLs) producing Escherichia coli and Klebsiella pneumoniae were 35.85% and 28.13%,respectively.The sensitive rate of Escherichia coli and Klebsiella pneumoniae to imipenem were both 100.0%.Conclusion Gram-negative bacilli is the most common pathogen in this hospital and multidrug resistance is observed.Therefore,cultures of blood specimen should be timely submitted in order to guiding the rational antimicrobial application in clinic.

A case report of childhood hepatosplenic γδT cell lymphoma and literature review / 中华实用儿科临床杂志

Objective To investigate the clinic characteristics of hepatosplenic γδT cell lymphoma (γδ HSTCL) and analyze the important role of morphology,immunology,cytogenetics and molecular(MICM) in the early diagnosis of γδHSTCL.Methods The clinical features of MICM of a rare case of childhood γδHSTCL had been analyzed,and the related literatures were reviewed.Results Bone marrow aspiration showed approximately 0.365 abnormal cells infiltrated.The immune phenotype analysis displayed 0.245 of the nuclear cells were abnormal ones,which possessed CD2/CD3/CD7/CD19/CD3s/cCD3 and TCRγδ expression.The immunohistochemical staining of spleen tissues showed clusters of differentiation (CD) 3/CD45 RO/CD8/Cytotoxic-granule associated protein (TIA-1)/leukocyte common antigen (LCA)/Granzyme B positive,CD4/CD20/T cell receptor (TCR) β/CD79 α/CD30/terminal deoxynucleotidy transferase (TdT) /CD10/ myeloperoxidase (MPO)/anaplasticlymphoma kinase (ALK) negative and 80.00％ of tumor cells displayed Ki-67 positive.The detection of spleen tissues by flow cytometry displayed that 72.26％ of the karyocytes were lymphocytes,with 88.90％ T lymphocytes.And 92.09％ of the T lymphocytes showed Ki-67/CD7dim,TCRγδ/CD2/CD8/CD34 positive,and TCRαβ/CD5/CD4/CD56 negative.And about 59.16％ of these karyocytes were abnormally matured T lymphocytes.The cytogenetic karyotype of bone marrow showed 46,XY.The detection of T cell receptor gene rearrangement showed TCRβ,TCRγ and TCRδ positive.The patient had been given prednisone of 60 mg/m2 when the diagnosis of γδHSTCL affirmed.But his parents discontinued chemotherapy for him and died.Conclusions MICM has shown a significant value in the diagnosis of γδHSTCL,a rare lymphoma in childhood.

Effect of sorafenib on serum hepatoma marker in patients with advanced hepatocellular carcinoma / 中国生化药物杂志

Objective To investigate effect of sorafenib on serum hepatoma marker in patients with advanced hepatocellular carcinoma. Methods 101 patients with advanced hepatocellular carcinoma were selected, and divided into two groups.50 cases in control group were treated with routine clinical treatment, and 51 cases in experimental group were treated with sorafenib on the basis of control group.The survival time, adverse reactions, VEGF, CTGF, HIF-1 and OPN levels were compared after the treatment.Results The survival time of experimental group was higher than control group (P<0.05).Compared with control group, the serum levels of VEGF、CTGF,HIF-1, OPN,AFP, CEA, and CA199 in experiment group were lower (P<0.05,P <0.01).There were no significant differences of total adverse reactions between experimental group and control group. Conclusion Sorafenib can effectively prolong survival time of patients with advanced hepatocellular carcinoma, reduce serum VEGF, CTGF, HIF-1 alpha and OPN levels.