Risk factors of sarcopenia among the elderly: a case-control study / 预防医学

Objective@#To investigate the risk factors of sarcopenia among the elderly, so as to provide insights into prevention of sarcopenia among the elderly.@*Methods@#A case-control study was conducted. A total of 371 patients with sarcopenia at ages of 60 years and older admitted to the First Affiliated Hospital of Xinjiang Medical University were selected as the case group, while 1∶1 matching healthy volunteers by gender, age and ethnicity in the hospital during the study period served as controls. Participants' demographics, disease history and nutrition were collected using questionnaire surveys, and factors affecting the development of sarcopenia were identified using a multivariable conditional logistic regression model. @*Results@#Participants in the case group included 171 men (46.09%), 254 Han ethnic populations (68.46%) and had a mean age of (73.04±7.83) years. Univariable conditional logistic regression analysis showed that participants with smoking, alcohol consumption, hypertension, diabetes, dyslipidemia, thyroid dysfunction and malnutrition had higher risk of developing sarcopenia (all P<0.05). Multivariable conditional logistic regression analysis identified hypertension (OR=1.851, 95%CI: 1.344-2.549), diabetes (OR=1.537, 95%CI: 1.068-2.213), dyslipidemia (OR=1.542, 95%CI: 1.112-2.140) and thyroid dysfunction (OR=2.575, 95%CI: 1.838-3.609) as risk factors of sarcopenia among the elderly. @*Conclusion@#Hypertension, diabetes, dyslipidemia and thyroid dysfunction may be risk factors of sarcopenia among the elderly.

Research progress of bacterial endotoxin detection methods / 中国生物制品学杂志

@#As a powerful pyrogen substance,bacterial endotoxin in small amounts can cause many serious effects on human health and would cause fever,microcirculation disorders,endotoxemia,endotoxin shock,diffuse intravascular coagulation and even death.Therefore,it is very important to detect endotoxin in pharmaceutical products.In recent years,due to overfishing of horseshoe crab and environmental deterioration,the number of horseshoe crab in China is decreasing rapidly.It has been listed as the second-class protected animal in China,and the traditional endotoxin detection methods of limulus amoebocyte lysate will be replaced gradually.With the deepening of research,a series of rapid,sensitive and accurate methods for endotoxin detection have been developed.This paper reviews various endotoxin detection methods,focusing on their innovations such as recombinant factor C method and biosensor method,and elaborates their advantages,disadvantages and development trends with the hope that new detection technologies will be more widely developed and applied.

Effect of SHP2 knockdown on the proliferation and osteogenic differentiation of human periodontal ligament stem cells under inflammatory environment / 口腔疾病防治

Objective @# The purpose of this study was to clarify the regulatory effect and mechanism of Src homology-2 domain containing protein tyrosine phosphatase-2 (SHP2) on human periodontal ligament stem cell (hPDLSC) proliferation and osteogenic differentiation under inflammatory environment and to provide a new target for the treatment of periodontitis. @*Methods@#SHP2 was knocked down in hPDLSCs, and the transfection efficiency of SHP2 was detected by RT-qPCR and Western blot. An in vitro inflammatory environment was created using tumor necrosis factor-α (TNF-α) and interleukin-1β (IL-1β). The effect of SHP2 knockdown on hPDLSC viability under normal and inflammatory conditions was detected by CCK-8, and the osteogenic capacity of hPDLSCs under normal and inflammatory conditions was detected by ALP staining, ALP activity, ARS staining, RT-qPCR and Western blot. The mechanism by which SHP2 knockdown affected the MAPK pathway and its downstream NF-κB pathway under inflammatory conditions was assessed by Western blot. @*Results@# Green fluorescence was observed after transfection for 72 h, and the titer of SHP2 shRNA recombinant lentivirus was 2.9×108 TU/mL. SHP2 expression was significantly downregulated in lentivirus-transfected cells, as demonstrated by Western blot and RT-qPCR (P<0.001). SHP2 knockdown inhibited hPDLSC proliferation to a certain extent and increased the expression of early osteogenic markers under normal conditions, including increased ALP activity and increased ALP and COL-1 expression (P<0.05). However, SHP2 knockdown exerted no effect on mineralized nodule formation. In the TNF-α- and IL-1β-induced inflammatory environment, SHP2 knockdown exerted no effect on hPDLSC proliferation (P>0.05). Osteogenic markers were upregulated (P<0.05), and mineralized nodules were significantly increased (P<0.05) after SHP2 knockdown. Western blot analysis showed that p65 phosphorylation and IκB-α degradation were reduced in SHP2-knockdown hPDLSCs in the inflammatory environment. Moreover, SHP2 knockdown significantly inhibited the expression of p-p38 and p-JNK MAPK, which represent pathways upstream of the NF-κB pathway (P<0.05). @*Conclusion @# SHP2 knockdown did not affect cell viability but promoted the osteogenic potential of hPDLSCs by inhibiting the MAPK/NF-κB-mediated signaling pathway under inflammatory environment.

Clinical Treatment of Insomnia with Syndrome of Qi Stagnation and Blood Stasis by Uyghur Medicine Yangxin Dawayimicol Honey Ointment / 中国实验方剂学杂志

ObjectiveTo evaluate the clinical efficacy and safety of Yangxin Dawayimicol honey ointment （YDHO） in the treatment of insomnia with the syndrome of Qi stagnation and blood stasis. MethodEighty insomnia patients who met the inclusion criteria in the Department of Encephalopathy of the Third Affiliated Hospital of Henan University of Chinese Medicine from November 2019 to October 2020 were randomly divided into an experimental group （48 cases） and a control group （32 cases）. The experimental group was treated with YDHO + Xuefu Zhuyu capsule simulators，and the control group was treated with Xuefu Zhuyu capsules + YDHO simulators for eight weeks. The changes in Pittsburgh sleep quality index（PSQI）score，traditional Chinese medicine （TCM） syndrome score，insomnia severity index （ISI），neurotransmitter indexes ［γ-aminobutyric acid（GABA），glutamic acid（Glu），and 5-hydroxy tryptamine（5-HT）］，serum inflammatory indexes ［interleukin-6（IL-6）and interleukin-10（IL-10）］， and safety index of the two groups were compared. ResultThe total effective rate was 97.83%（45/46） in the experimental group， higher than 68.75%（22/32） in the control group（Z=-4.292，P<0.01）. The experimental group was superior to the control group in PSQI score，ISI score，TCM syndrome score， and sleep duration（P<0.05）. The curative effects were equivalent between the two groups in shortening the time to fall asleep. The experimental group showed increased serum content of GABA，5-HT， and IL-10 and reduced content of Glu and IL-6，with few adverse reactions （P<0.05）. ConclusionYDHO is effective，safe， and reliable in the treatment of insomnia with Qi stagnation and blood stasis syndrome.

Relationship Between Syndrome Elements and Therapy of Ischemic Stroke Based on Scale Hierarchy and Principal Component Analysis / 中国实验方剂学杂志

Objective:To study the distribution of ischemic stroke treatment with data mining technology and evaluate its clinical efficacy. Method:China National Knowledge Infrastructure Database（CNKI），China Science and Technology Reader's Digest Database（VIP），Wanfang Data，Chinese Biomedical Literature Database（Sino Med）were retrieved from January 1978 to December 2018. The clinical observation and study literatures on the treatment of ischemic stroke with the combination of traditional Chinese medicine and Western medicine were retrieved in the four databases. After standardized and hierarchical collection and processing of all syndromes，treatment methods，prescriptions and other information in the literatures，a database of syndrome elements and treatment of ischemic stroke was established. Syndrome factors and treatment methods were analyzed by scale evaluation and hierarchical classification methods. Kendall's tau-b correlation analysis，principal component analysis and other statistical methods were used to describe the correlation and distribution of syndrome factors and treatment methods of ischemic stroke. Result:The results of heterogeneity analysis showed that the included literatures were homogeneous and could be combined with subsequent statistics. A total of 450 syndromes and treatment methods were included in this study，and 1 287 single syndrome elements and 1 562 single treatment methods were obtained after unified and standardized splitting. Besides the corresponding syndrome elements and treatment methods，phlegm-dampness-invigorating Qi（-0.52） and Qi deficiency-invigorating Qi（-0.56） were also highly correlated. The study team represented the importance of syndrome and treatment elements with class Ⅰ，Ⅱ，Ⅲ from high to low. Qi deficiency，blood stasis and fire heat，phlegm，viscera excess were class Ⅰ syndrome elements；Yin deficiency，endogenous wind were class Ⅱ syndrome elements；Yin deficiency and Yang deficiency were class Ⅲ syndrome elements；Removing phlegm dampness，clearing heat，clearing the hollow viscera and extinguishing wind，promoting blood circulation to remove blood stasis，tonifying Qi were class Ⅰ treatment of ischemic stroke，and removing phlegm dampness，clearing heat，clearing the hollow viscera were more likely to appear simultaneously； and extinguishing wind，activating blood circulation and removing blood stasis，and benefiting Qi were more likely to appear simultaneously. Nourishing Yin and regulating Qi were class Ⅱ therapies of ischemic stroke，which were highly correlated and often appear simultaneously. Inducing resuscitation，tonifying Yang and dredging collaterals were class Ⅲ，Ⅳ，Ⅴ therapies. Conclusion:Qi deficiency，blood stasis，phlegm dampness，fire heat and viscera excess were the main syndromes of ischemic stroke，while Qi deficiency and blood stasis，phlegm heat and viscera excess were the main syndromes. Eliminating phlegm and dampness，clearing heat，clearing the hollow viscera，promoting blood circulation and removing blood stasis，extinguishing wind and benefiting Qi were the main therapies for the treatment of ischemic stroke. In clinical treatment for ischemic stroke，the therapies for relieving phlegm and dampness，clearing heat and relieving organs are often used in combination，and the therapies for promoting blood circulation and removing blood stasis were often used in combination with the therapies for invigorating Qi and extinguishing wind for the synergistic effect.

Vitrification-based cryopreservation of tissues: Strengths and existing problems / 中国组织工程研究

BACKGROUND: Vitrification-based cryopreservation is a promising cryopreservation method, which can change the state of the biological materials by using high concentration vitrification reagent to realize active preservation. OBJECTIVE: To review the biological principle of vitrification-based cryopreservation, the classification of cryopreservation reagents, as well as the cryopreservation of ovary skin, cornea and other medical tissue specimens. METHODS: PubMed and WanFang databases were searched for relevant articles published from January 1994 through October 2019. Search terms were “tissue; vitrification; cryopreservation” in English and Chinese, respectively. According to the inclusion and exclusion criteria, 45 articles were finally included in result analysis.RESULTS AND CONCLUSION: The process of vitrification-based cryopreservation can avoid ice crystallization by which the cells are damaged, and effectively preserve the cell’s biological activity and basic functions. Vitrified cryopreservation reagents can be divided into permeable and non-permeable reagents. Their operation is simple and efficient. The only disadvantage is that the high concentration of cryopreservation reagents can cause some toxic injuries to the cells. To reduce the risk of overall tissue damage, a variety of low-toxic cryopreservation reagents can be mixed and used. At present, vitrification-based cryopreservation technology has been successfully applied in a variety of cells. However, the technical problems in the cryopreservation of tissues have not been solved completely.

New furo3,2-hisochroman from the mangrove endophytic fungus Aspergillus sp. 085242 / 中国天然药物

Four new compounds, asperisocoumarin G (1), asperisocoumarin H (2), (±)-asperisocoumarin I [(±)-3], along with the known pergillin (4) and penicisochroman L (5) were isolated from a mangrove endophytic fungus Aspergillus sp. 085242 by further chemical investigation. The structures of the new compounds, including their absolute configurations, were established by analysis of HR-ESI-MS and NMR spectroscopic data, and ECD calculation. Asperisocoumarins G-I (1-3) were new isocoumarins belonging to the class of furo[3, 2-h]isocoumarins which are rarely found in natural sources. All of the isolated compounds were evaluated for their α-glucosidase inhibitory effects, and compounds 1 and 4 showed moderate α-glucosidase inhibitory activity, respectively. In an antimicrobial test, the racemate of 3 showed antibacterial activity against Salmonella.

Analysis of the role of the interleukins in colon cancer

BACKGROUND: The role of interleukin family in colon cancer remained controversial. The purpose of this study was to investigate the association between interleukin family and colon cancer progression through bioinformatics methods and to validate such association in clinical patients. METHODS: A total of 15 differentially expressed interleukins between the colon cancer tissue and normal colon tissue were evaluated from the Cancer Genome Atlas (TCGA) database with R software and only interleukin-7 (IL-7) was significantly associated with survival. The signaling pathway associated with IL-7 was then investigated using gene enrichment analysis. In addition, subsets of TNM were analyzed in detail and univariate and multivariate COX regression analysis were conducted. Finally, we performed western blotting, immunohistochemistry, cell proliferation and cell apoptosis analysis to examine the expression of IL-7 in patients with intestinal cancer. RESULTS: The study demonstrated that IL-7 could inhibit the progression of colon cancer. In addition, IL-7 was found to be associated with overall survival (OS) and pathological stage. Further analysis of IL-7 expression with clinical data indicated that IL-7 was a key factor in inhibiting colon cancer progression. CONCLUSION: IL-7 was a key factor in inhibiting the progression of colon cancer and was closely related to overall survival.

Association of bone mineral density with chronic obstructive pulmonary disease in postmenopausal women

Abstract Background Osteoporosis (OP) is common in patients with chronic obstructive pulmonary disease (COPD). The relationship between OP and COPD has been primarily studied in male patients, and few reports are available in postmenopausal women. Objective The purpose of this study was to investigate the association between bone mineral density (BMD) and COPD in postmenopausal women. Methods This cross-sectional study included 133 clinically stable female ex-smokers with confirmed COPD, and 31 age-matched “ex-smoker” female controls. We analyzed groups according to their airway obstruction category. BMD was measured on dual-energy X-ray absorptiometry images of the left femoral neck. Results Patients with COPD had lower T-scores and higher prevalence of osteopenia/OP than the control group. In the COPD group, the airway obstruction category was significantly associated with the T-score after adjustment for confounders. Multivariate logistic regression analysis showed COPD was an independent marker for increased risk of osteopenia/OP in postmenopausal women. Conclusions COPD and airway obstruction category were strongly related to BMD. Postmenopausal women with COPD, especially those with severe airway obstruction, had a higher prevalence rate and a higher risk of osteopenia and OP than female controls without COPD.

Acetoacetate extract of pleione bulbocodioides (franch. ) rolfe induces apoptosis of human leukemia thp-1cells through a mitochondria-regulated intrinsic apoptotic pathway / Extrato de acetoacetato de Pleione bulbocodioides (Franch. ) Rolfe induz a apoptose de células THP-1 de leucemia humana através de uma via apoptótica intrínseca regulada por mitocôndrias

The tubers of three orchidaceous plants, includingPleione bulbocodioides (Franch.) Rolfe, have been used as 'Shan-Ci-Gu' in traditional Chinese medicine for the treatment of bacterial infections and cancers for thousands of years. In this study, the effects of an acetoacetate (EtOAc) extract of P. bulbocodioides on the cell viability and apoptosis of THP-1 (human acute monocytic leukemia cell line) cells and its interaction with possible apoptotic pathways were investigated. THP-1 cells were treated with the EtOAc extract of P. bulbocodioides at different concentrations. The results showed that THP-1 cell viability was significantly inhibited by the EtOAc extract ofP. bulbocodioides with an IC50 of 51.37±2.68 µ g/ mL at 24 h. The examination of cytotoxic effects on healthy cells showed that the EtOAc extract of P. bulbocodioidesdid not show any effect on healthy Vero cells. Selectivity indexes were greater than 15.57, suggesting that the EtOAc extract of P. bulbocodioides had selective toxicity against THP-1 cells. The results of annexin V-FITC/PI and DAPI staining showed that the EtOAc extract of P. bulbocodioides induced cell apoptosis in a dose-dependent manner. The apoptotic rate was increased in the treatment groups compared with that in the control group (P<0.05). The distribution of cells in the G2 phase of the cell cycle increased along with typical cell apoptosis-induced morphological changes. The levels of the pro-apoptotic proteins Bax, cleaved PARP and cleaved caspase-3 increased with increasing concentration of acetoacetate extract of P. bulbocodioides, while the anti-apoptosis protein Bcl-2 was downregulated. Cyt c and AIF, which are characteristic proteins of the mitochondria-regulated intrinsic apoptosis pathway, also increased in the cytosol with increasing concentrations of the EtOAc extract of P. bulbocodioides. These results showed that the EtOAc extract of P. bulbocodioidessignificantly inhibits cell viability and induces cell apoptosis in the human leukemia cell line THP-1 through a mitochondria-regulated intrinsic apoptotic pathway

Os tubérculos de três plantas orquidáceas, incluindo Pleione bulbocodioides (Franch.) Rolfe, têm sido usados como "Shan-Ci-Gu" na medicina tradicional chinesa para o tratamento de infecções bacterianas e cânceres por milhares de anos. Neste estudo, os efeitos de um extrato de acetoacetato (EtOAc) de P. bulbocodioides na viabilidade celular e apoptose de células THP-1 (linhagem celular de leucemia monocítica aguda humana) e sua interação com possíveis vias apoptóticas foram investigados. As células THP-1 foram tratadas com o extrato EtOAc de P. bulbocodioides em diferentes concentrações. Os resultados mostraram que a viabilidade das células THP-1 foi significativamente inibida pelo extrato EtOAc de P. bulbocodioides com IC50 de 51,37 ± 2,68 µ g/mL às 24 h. O exame dos efeitos citotóxicos em células saudáveis mostrou que oextrato de EtOAc de P. bulbocodioides não mostrou nenhum efeito sobre células Vero saudáveis. Os índices de seletividade foram maiores que 15,57, sugerindo que o extrato de EtOAc de P. bulbocodioides teve toxicidade seletiva contra as células THP-1. Os resultados da coloração da anexina V-FITC/PI e DAPI mostraram que o extrato de EtOAc de P. bulbocodioides induziu a apoptose celular de maneira dose-dependente. A taxa de apoptose foi aumentada nos grupos de tratamento em comparação com o grupo controle (P <0,05). A distribuição de células na fase G2 do ciclo celular aumentou juntamente com alterações morfológicas típicas induzidas pela apoptose celular. Os níveis das proteínas pró-apoptóticas Bax, PARP clivada e caspase-3 clivada aumentaram com o aumento da concentração do extrato acetoacetato de P. bulbocodioides, enquanto a proteína anti-apoptose Bcl-2 foi regulada negativamente. Cyt c e AIF, que são proteínas características da via de apoptose intrínseca regulada por mitocôndrias, também aumentaram no citosol com concentrações crescentes do extrato de EtOAc de P. bulbocodioides. Estes resultados mostraram que o extrato de EtOAc de P. bulbocodioides inibe significativamente a viabilidade celular e induz a apoptose na linha celular de leucemia humana THP-1 através de uma via apoptótica intrínseca regulada por mitocôndrias.

Role of Th9, Th17, Treg Cells levels and IL-9, IL-17 and TGF-β Expression in Peripheral Blood of Patients with ITP in Pathogenesis of ITP / 中国实验血液学杂志

OBJECTIVE@#To detect the levels of Treg, Th17, Th9 cells and expression of transforming growth factor-β (TGF-β), interleukin-17 (IL-17) and interleukin-9 (IL-9) in peripheral blood of patients with immune thrombocytopenia (ITP) and to explore its role in the pathogenesis of ITP.@*METHODS@#Fifty-four patients with ITP (ITP group) and 40 healthy volunteers (control group) were selected in our hospital. The of Treg, Th17 and Th9 cells in peripheral blood of 2 groups were measured by flow cytometry, and the expression of cytokines, such as TGF-β, IL-17 and IL-9 in the peripheral blood of 2 groups were detected by enzyme linked immunosorbent assay (ELISA).@*RESULTS@#The level of Treg cells in the peripheral blood of the ITP group was significantly decreased in comparison with the control group, while the levels of Th17 and Th9 cells significantly increased in comparison with the control group (all P<0.01). The expression of cytokine such as TGF-β in the peripheral blood of the case group significantly decreased in comparison with the control group, while the expression levels of IL-17 and IL-9 significantly increased in comparison with the control group (P<0.01). The results of Pearson correlation analysis showed that there was a positive correlation between the level of Treg cells and platelet count (PLT) in peripheral blood of the ITP group (r=0.35, P<0.05), and there were negative correlation between the level rate of Th17, Th9 cells and Plt count (r=-0.37, -0.43, P<0.05); there was a positive correlation between the expression of the TGF-β in the ITP group and Plt count (r=0.46, P<0.05), while the expression of IL-17 and IL-9 showed negative correlation with PLT (r=-0.48, -0.54, P<0.05).@*CONCLUSION@#The percentage of Treg, Th17 and Th9 cells in the peripheral blood of patients with ITP is abnormal, and the expression of TGF-β, IL-17 and IL-9 also is abnormal, which may play an important role in the pathogenesis of ITP.

Association of Severity of Coronary Lesions with Bone Mineral Density in Postmenopausal Women / Associação entre Gravidade das Lesões Coronarianas e Densidade Mineral Óssea em Mulheres Pós-Menopausa

Abstract Background: Coronary artery disease (CAD) and osteoporosis (OP) are common diseases in postmenopausal women. In both cross-sectional and longitudinal epidemiologic studies, low bone mass has been related to increased frequency of CAD. However, available data on the relationship between bone mineral density (BMD) and severity of coronary lesions is limited. Objective: To investigate association between the BMD and severity of coronary lesions assessed by Gensini score in postmenopausal women. Methods: This study included 122 postmenopausal women who were diagnosed with CAD. These patients were divided into two groups according to the severity of coronary lesions assessed by the Gensini score - patients with mild coronary lesions (Gensini score < 25) and patients with severe coronary lesions (Gensini score ≥ 25). Femoral neck mineral density was measured with dual energy X-ray absorptiometry (DXA). Results: The study included postmenopausal women aged 64.31 ± 4.71 years, 85 of whom (69.7%) exhibited severe coronary lesions. Participants with severe coronary lesions had a significantly higher T score than did those with mild coronary lesions at the femoral neck (p < 0.05). The mean T-score was −0.84 ± 1.01 in mild coronary lesions group, −1.42 ± 1.39 in severe coronary lesions group (p < 0.05). Multivariable logistic regression analysis showed that osteopenia-osteoporosis at the Femoral neck (odds ratio 2.73; 95% confidence interval 1.06 to 6.13) was associated with an increased risk of developing severe coronary lesions. The multiple regression model showed that T-scores (b = −0.407, SE = 0.151, p=0.007) were the independent predictors of Gensini score. Conclusion: The relationship between severity of coronary lesions and BMD was significant in postmenopausal women. BMD, a low-cost technique involving minimal radiation exposure, widely used for osteoporosis screening, is a promising marker of severity of coronary lesions.

Resumo Fundamento: A doença arterial coronariana (DAC) e a osteoporose são doenças comuns em mulheres pós-menopausa. Tanto em estudos transversais como em estudos epidemiológicos longitudinais, a massa óssea diminuída foi relacionada à frequência aumentada de DAC. No entanto, dados disponíveis sobre a relação entre densidade mineral óssea (DMO) e gravidade das lesões coronarianas são limitados. Objetivo: Investigar a associação entre DMO e gravidade das lesões coronarianas avaliadas pelo escore de Gensini em mulheres pós-menopausa. Métodos: Este estudo incluiu 122 mulheres pós-menopausa diagnosticadas com DAC. As pacientes foram divididas em dois grupos de acordo com a gravidade das lesões coronarianas avaliada pelo escore de Gensini - pacientes com lesões coronarianas leves (escore de Gensini < 25) e pacientes com lesões coronarianas graves (escore de Gensini ≥ 25). A densidade mineral do colo femoral foi medida por absorção de raios-X de dupla energia (DXA). Resultados: O estudo incluiu mulheres pós-menopausa com idade de 64,31 ± 4,71 anos, 85 delas (69,7%) com lesões coronarianas graves. Pacientes com lesões coronarianas graves apresentaram um escore T mais elevado que aquelas com lesões coronarianas leves no colo femoral (p < 0,05). O escore T médio foi -0,84 ± 1,01 no grupo com lesões leves, e -1,42 ± 1,39 no grupo com lesões graves (p < 0,05). A análise de regressão logística multivariada mostrou que a osteopenia-osteoporose no colo femoral (odds ratio 2,73; intervalo de confiança de 95% 1,06 - 6,13) esteve associada com um risco aumentado de se desenvolver lesões coronarianas graves. O modelo de regressão múltipla mostrou que os escores T (b = -0,407; EP= 0,151; p = 0,007) foram preditores independentes do escore de Gensini. Conclusão: Encontrou-se uma relação significativa entre a gravidade das lesões coronarianas e a DMO em mulheres pós-menopausa. DMO, uma técnica de baixo custo que envolve mínima exposição à radiação, e amplamente utilizada no rastreamento de osteoporose, é um marcador promissor da gravidade de lesões coronarianas graves.

Independent external verification of the nomograms for predicting lymph node metastasis in penile cancer / 中华男科学杂志

<p><b>Objective</b>To evaluate the two newly established nomograms for predicting lymph node metastasis in penile cancer based on the clinical data on a large cohort of patients.</p><p><b>METHODS</b>We retrospectively studied the clinical data on 93 patients with penile cancer treated in the Center for Tumor Prevention and Treatment. Using the two recently established nomograms (Bhagat nomogram and Zhu nomogram), we predicted lymph node metastasis in the patients, analyzed the differences between prediction and the results of postoperative pathology, and compared the accuracy of prediction between the two nomograms with the receiver operating characteristic (ROC) curve and the area under the curve (AUC).</p><p><b>RESULTS</b>The median age of the patients was 55 (27－82) years. Positive lymph nodes were found in 31 cases (33.3%) postoperatively and in 9 (21.9%) of the 41 clinically negative cases. The AUC of the Bhagat nomogram was 0.739 and that of Zhu nomogram was 0.808, both of which were similar to the prediction accuracy of internal verification and manifested a medium predictive ability.</p><p><b>CONCLUSIONS</b>The newly established Bhagat and Zhu nomograms can be used for predicting lymph node metastasis in penile cancer, but with a low precision, and therefore cannot be relied exclusively for the option of inguinal lymphadenectomy.</p>

Relation between single Nucleotide Polymorphisms of CYP3A5 Gene and MDR1 Gene Loci and Risk of CML Cytogenetic Relapse / 中国实验血液学杂志

OBJECTIVE@#To analyze the relation between the signle nucleotide polymorphisms (SNP) of CYP3A5 gene and MDR1 gene loci and the risk of cytogenetic relapse in chronic myeloid leukemia (CML).@*METHODS@#The clinical data of 90 patients with CML treated with imatinib in our hospital were collected.The patients were divided into 2 groups: non-relapse and relapse according to relapse and non-relapse, then the relation between the SNP of CYP3A5 gene and MRD1 gene loci and the risk of cytogenetic relapse in CML patients.@*RESULTS@#The grouping result showed that the patients with non cytogenetic relapse accounted for 41 cases those were enrolled in non-relapse group, and patient-with cytogenetic relapse accounted for 49 cases those were enrolled in relapse group. The follow-up time was 36 months. The detection showed that the incidence of cytogenetic relapse in the patients with CC genotype was significantly higher than that in the patients with TT+CT genotype of C3435T and C1236T at MDR1 gene loci (P<0.05).Compared with the patients with CT+CC genotype in C3435T locus of MDR1 gene, the rate of cytogenetic relapse in the patients with TT genotype decreased significantly (P<0.05). Compared with patients with CT+CC phemotype of C3435T in MDR1 gene locus, the non-relapse survival time of TT genotypes was significantly prolonged (P<0.05). Compared with non-relapse group, the incidence of neutropenia (29.27% vs 71.43%) and blood toxicity (39.02% vs 61.22%) in the relapse group increased significantly (P<0.05). The imatinib dose (OR=2 95, 95% CI:1.37~7.76) and the C3435T genotype in MDR1 genes (OR=0.09, 95% CI:0.05~0.72) were the factors affecting the cytogenetic relapse of the patients with CML (both P<0.05).@*CONCLUSION@#The therapeutic dose of imatinib and the C3435T and C1236T genotypes in MDR1 gene have a certain effect on the cytogenetic relapse of CML patients. C3435T genotypes in the.MDR1 gene showed a certain predictive value for evaluating the risk of cytogenetic relapse, which can be used as a clinical biomarker.

Prognosis of 591 Fetuses with Ultrasonic Soft Markers during Mid-Term Pregnancy / 华中科技大学学报（医学）（英德文版）

The present study aimed to examine the value of ultrasonic soft markers in prenatal screening by analyzing the clinical outcome of fetuses with ultrasonic soft markers during the second trimester of pregnancy.A retrospective analysis was performed to evaluate the outcome of 591 fetuses with ultrasonic soft markers from January 2015 to August 2016 in Zhongnan Hospital of Wuhan University,China.It was found that 591 fetuses showed ultrasonic soft markers in 4927 cases with the occurrence rate being 12.0％.Among them,564 fetuses (95.4％) were delivered and the remaining 27 cases (4.6％) were aborted.Five hundred and sixty-seven cases had single ultrasonic soft marker,including echogenic intracardiac focus (n=343),mild renal pelvis dilatation (n=116),short long bones (n=72),single umbilical artery (n=31),mild lateral ventriculomegaly (n=21),choroid plexus cysts (n=19),and echogenic bowel (n=13),with the disappearing rates in pregnancy being 97.1％ (333/343),77.6％ (90/116),0％ (0/72),0％ (0/31),57.1％ (12/21),89.5％ (17/19) and 61.5％ (8/13) respectively.The rate of pregnancy termination due to single ultrasonic soft marker was 3.4％ (19/567),and that was 33.3％ (8/24) due to two ultrasonic soft markers with the difference being statistically significant (P＜0.05).The reasons of pregnancy termination included malformations (polycystic kidney,cleft lip and palate,congenital heart diseases,pcromphalus,hypospadias,hydrocephalus),chromosome abnormality,and stillbirth.It was concluded that single ultrasonic soft marker is usually transient manifestation in pregnancy.Without the other structural defects,single ultrasonic soft marker usually disappears spontaneously with favorable prognosis in a low-risk population.It is suggested that ultrasonic soft markers should be appropriately interpreted to avoid unnecessary invasive examination.

Clinical presentation of hemophagocytic lymphohistiocytosis in adults is less typical than in children

OBJECTIVE: Hemophagocytic lymphohistiocytosis in adults is largely underdiagnosed. To improve the rate and accuracy of diagnosis in adults, the clinical and laboratory characteristics of hemophagocytic lymphohistiocytosis were analyzed in and compared between adults and children in a Chinese cohort. METHOD: Data from 50 hemophagocytic lymphohistiocytosis patients, including 34 adults and 16 children who fulfilled the 2004 hemophagocytic lymphohistiocytosis diagnostic criteria, were collected and analyzed. RESULTS: 1. Etiological factors: The proportion of Epstein-Barr virus infection was lower in adults compared with children, whereas fungal infection and natural killer/T cell lymphoma were more frequent in adults (P<0.05). 2. Clinical manifestations and laboratory findings: Over 90% of adults and pediatric patients presented with fever, thrombocytopenia and high serum ferritin levels. However, in adults, the proportions of hepatomegaly, splenomegaly and jaundice were much lower (P<0.01) than in children, and serous cavity effusion was more frequent in adult patients (P<0.05). More children had hemoglobin <90 g/L, total bilirubin >19 mmol/L and lactate dehydrogenase >500 U/L compared with adults (P<0.05). 3. The time interval from the onset of symptoms to clinical diagnosis was significantly shorter in pediatric patients than in adults (P<0.05). CONCLUSIONS: Certain clinical features were different between the two groups. The less characteristic clinical presentation of hemophagocytic lymphohistiocytosis in adults may make the disease more difficult to diagnose. Our findings suggest that hemophagocytic lymphohistiocytosis should be considered when an adult patient presents with the above-mentioned symptoms.

The Role of Minimally Invasive Plate Osteosynthesis in Rib Fixation: A Review

More than a century ago, the first scientific report was published about fracture fixation with plates. During the 1950's, open reduction and plate fixation for fractures were standardized by the founders of Arbeitsgemeinschaft fur osteosynthesefragen/Association for the Study of Internal Fixation. Since the introduction of plate fixation for fractures, several plates and screws have been developed, all with their own characteristics. To accomplice more fracture stability, it was thought the bigger the plate, the better. The counter side was a compromised blood supply of the bone, often resulting in bone necrosis and ultimately delayed or non-union. With the search and development of new materials and techniques for fracture fixation, less invasive procedures have become increasingly popular. This resulted in the minimally invasive plate osteosynthesis (MIPO) technique for fracture fixation. With the MIPO technique, procedures could be performed with smaller incisions and thus with less soft tissue damage and a better preserved blood supply. The last 5 years rib fixation has become increasingly popular, rising evidence has become available suggesting that surgical rib fixation improves outcome of patients with a flail chest or isolated rib fractures. Many surgical approaches for rib fixation have been described in the old literature, however, most of these techniques are obscure nowadays. Currently mostly large incisions with considerable surgical insult are used to stabilize rib fractures. We think that MIPO deserves a place in the surgical treatment of rib fractures. We present the aspects of diagnosis, preoperative planning and operative techniques in regard to MIPO rib fixation.

Histomorphometric characterization of forestomach of yak (Bos grunniens) in the Qinghai-Tibetan Plateau / Caracterización histomorfométrica del preestómago del yak (Bos grunniens) en la Meseta Qinghai-Tíbet

Six forestomachs of yaks (Bos grunniens) were studied with gross dissection and histological methods. It was found that the forestomach of yak consisted of the following three parts, rumen, reticulum and omasum, which were composed of the mucosa, submucosa, muscularis and serosa. In addition, the mucosal epithelium was covered with stratified squamous epithelium, with part of keratinized the shallow cells. Rumen, the mucosa of which formed ligulate papillae varying in size and shape, was no muscularis mucosa. Reticulum, consisted of a surface epithelium that invaginated to various extent into the lamina propria, formed various folds in shape, namely, grid-like small rooms. Furthermore, there are many secondary folds densely covered with keratinized papillae. The most striking feature of the omasum was to be formed the laminae omasi varying in length, with short and rough papillae distributing on both sides. Taken together, there was no glands within the mucosa and lamina propria of forestomach of yak, where diffuse lymphoid tissues can be observed clearly. It is, therefore, believed that the yak forestomach may have evolved those specific structural characteristics in response to the unique living environment and dietary habits impose on the Qinghai-Tibetan Plateau.

Seis preestómagos de yaks (Bos grunniens) fueron estudiados mediante disección macroscópica y métodos histológicos. Se encontró que el preestómago del yak constaba de tres partes: rumen, retículo y omaso, compuestas de mucosa, submucosa, muscular y serosa. Además, el epitelio de la mucosa se conformó con epitelio escamoso estratificado, con parte de células cornificadas superficiales. En el rumen, la mucosa formó papilas linguladas que variaron en tamaño y forma. El retículo, consistió en una superficie epitelial que se invaginó en distinta medida en la lámina propia, conformando varias formas de pliegues, es decir, cuadrículas como pequeños cubículos. Además, existían muchos pliegues secundarios densamente cubiertos con papilas cornificadas. La característica más llamativa del omaso, fue formar láminas que variaron en longitud, con papilas cortas y ásperas distribuidas en ambos lados. Tomados en conjunto, no hubo glándulas dentro de la mucosa y la lámina propia del preestómago del yak, donde los tejidos linfoides difusos se pueden observar claramente. Por lo tanto, creemos que esas características estructurales específicas del preestómago del yak pudieron haber evolucionado en respuesta a las condiciones de vida únicas y hábitos dietéticos que se presentan en la meseta de Qinghai-Tíbet.

Are Diatom-based Indices from Europe Suitable for River Health assessment in China? A Case Study from Taizi River, Northeastern China.

Aims: Diatom-based indices are widely used for river health assessment. Many such indices were originally developed in European countries based on a specific taxa list of benthic diatoms. Thus, the transferability of these indices to other rivers and geographic locations has been questioned. Design, Place and Duration of Study: In this study, we sampled benthic diatoms in the Taizi River, a temperate river in northeastern China during May 2009 to evaluate the applicability of eight commonly used diatom-based indices for assessing the principal water quality gradient and relationship with different water chemical parameters. Methodology: Sensitivities of the eight indices were evaluated by applying the principle component analysis (PCA), the box-plot map and multiple comparisons of the Kruskal– Wallis nonparametric test (K-W test). Results: The results showed that all eight of the tested indices showed significant correlations with the principal contamination gradient of both nutrient enrichment and organic pollution. The contamination gradient was extracted through principal component analysis and the first three axes explained 40.19%, 18.72%, and 9.77% of the total variation, respectively. Conclusion: Our results confirmed that the diatom-based indices did not properly reflect the current Chinese surface water quality classes. However, these indices showed consistent trends with chemical parameters that reflected general water quality condition, such as electric conductivity (EC); organic pollution, as reflected by dissolved oxygen (DO) and chemical oxygen demand (COD) and nutrient enrichment, as reflected by total nitrogen (TN) and total phosphorus (TP). The results indicated that both BDI and SHE were the most suitable diatom-based indices among the eight tested indices, although SPI, DES and ROTT were also suitable for river health assessment in the Taizi River.

Expression of leukocyte-associated immunoglobulin-like receptor-1 (LAIR-1) on osteoclasts and its potential role in rheumatoid arthritis

OBJECTIVE: Leukocyte-associated immunoglobulin-like receptor-1 is an inhibitory receptor primarily expressed by immune cells. This study was undertaken to define the role of this molecule in osteoclast differentiation and rheumatoid arthritis. METHODS: In vitro osteoclast assays were performed to characterize the role of Leukocyte-associated immunoglobulin-like receptor-1 in murine and human osteoclastogenesis. Human Leukocyte-associated immunoglobulin-like receptor-1 expression was assessed by immunohistochemistry staining in the synovium of patients with rheumatoid arthritis. The levels of soluble Human Leukocyte-associated immunoglobulin-like receptor-1 were determined by enzyme-linked immunosorbent assay. RESULTS: We found that multinucleated osteoclast formation from mouse bone marrow cells was inhibited by treatment with a monoclonal antibody against mouse Leukocyte-associated immunoglobulin-like receptor-1 in vitro. By immunohistochemistry, we found that Leukocyte-associated immunoglobulin-like receptor-1 was mainly expressed by macrophages in the inflamed synovial tissue of rheumatoid arthritis patients. In addition, serum and synovial fluid levels of soluble Leukocyte-associated immunoglobulin-like receptor-1 were higher in rheumatoid arthritis patients compared to healthy controls or osteoarthritis patients. Moreover, overexpression of Leukocyte-associated immunoglobulin-like receptor-1 in CD14+ monocytes from healthy volunteers also inhibited human osteoclastogenesis. CONCLUSION: Collectively, these data demonstrate for the first time that Leukocyte-associated immunoglobulin-like receptor-1 inhibits osteoclastogenesis. Therefore, these results may have therapeutic implications for the treatment of rheumatoid arthritis. .