Impact of bicuspid aortic valve or tricuspid aortic valve on hemodynamics and left ventricular reverse remodeling in patients after transcatheter aortic valve replacement / 中华心血管病杂志

Objective: To compare the impact of bicuspid aortic valve (BAV) or tricuspid aortic valve (TAV) on hemodynamics and left ventricular reverse remodeling after transcatheter aortic valve replacement (TAVR). Methods: We retrospectively analyzed the clinical data of patients who underwent TAVR in our hospital from January 2019 to March 2021. Patients were divided into BAV group and TAV group according to aortic contrast-enhanced CT. Each patient was followed up by N-terminal pro B-type natriuretic peptide (NT-proBNP) and echocardiography at four time points, namely before TAVR, 24 hours, 1 month and 6 months after TAVR. Echocardiographic data, including mean pressure gradient (MPG), aortic valve area (AVA), left ventricular ejection fraction (LVEF), left ventricle mass (LVM) and LV mass index (LVMi) were evaluated. Results: A total of 41 patients were included. The age was (75.0±8.6) years, and male patients accounted for 53.7%. There were 19 BAV patients and 22 TAV patients in this cohort. All patients undergoing TAVR using a self-expandable prosthesis Venus-A valve. MPG was (54.16±21.22) mmHg(1 mmHg=0.133 kPa) before TAVR, (21.11±9.04) mmHg at 24 hours after TAVR, (18.84±7.37) mmHg at 1 month after TAVR, (17.68±6.04) mmHg at 6 months after TAVR in BAV group. LVEF was (50.42±13.30)% before TAVR, (53.84±10.59)% at 24 hours after TAVR, (55.68±8.71)% at 1 month after TAVR and (57.42±7.78)% at 6 months after TAVR in BAV group. MPG and LVEF substantially improved at each time point after operation, and the difference was statistically significant (all P<0.05) in BAV group. MPG in TAV group improved at each time point after operation, and the difference was statistically significant (all P<0.05). LVMi was (164.13±49.53), (156.37±39.11), (146.65±38.84) and (134.13±39.83) g/m2 at the 4 time points and the value was significantly reduced at 1 and 6 months post TAVR compared to preoperative level(both P<0.05). LVEF in the TAV group remained unchanged at 24 hours after operation, but it was improved at 1 month and 6 months after operation, and the difference was statistically significant (all P<0.05). LVMi in TAV group substantially improved at each time point after operation, and the difference was statistically significant (all P<0.05). NT-proBNP in both two groups improved after operation, at 1 month and 6 months after operation, and the difference was statistically significant (all P<0.05). MPG in TAV group improved better than in BAV group during the postoperative follow-up (24 hours after TAVR: (11.68±5.09) mmHg vs. (21.11±9.04) mmHg, P<0.001, 1 month after TAVR: (10.82±3.71) mmHg vs. (18.84±7.37) mmHg, P<0.001, 6 months after TAVR: (12.36±4.42) mmHg vs. (17.68±6.04) mmHg, P=0.003). There was no significant difference in NT-proBNP between BAV group and TAV group at each time point after operation (all P>0.05). There was no significant difference in paravalvular regurgitation and second prosthesis implantation between the two groups (all P>0.05). Conclusions: AS patients with BAV or TAV experience hemodynamic improvement and obvious left ventricular reverse remodeling after TAVR, and the therapeutic effects of TAVR are similar between BAV and TAV AS patients in the short-term post TAVR.

MiR-494-3p Upregulation Exacerbates Cerebral Ischemia Injury by Targeting Bhlhe40

Purpose@#Cerebral ischemia is related to insufficient blood supply and is characterized by abnormal reactive oxygen species (ROS) production and cell apoptosis. Previous studies have revealed a key role for basic helix-loop-helix family member e40 (Bhlhe40) in oxidative stress and cell apoptosis. This study aimed to investigate the roles of miR-494-3p in cerebral ischemia/reperfusion (I/R) injury. @*Materials and Methods@#A mouse middle cerebral artery occlusion (MCAO/R) model was established to mimic cerebral ischemia in vivo. Brain infarct area was assessed using triphenyl tetrazolium chloride staining. Oxygen-glucose deprivation/reoxygenation (OGD/R) operation was adopted to mimic neuronal injury in vitro. Cell apoptosis was analyzed by flow cytometry. The relationship between miR-494-3p and Bhlhe40 was validated by luciferase reporter and RNA immunoprecipitation assays. @*Results@#Bhlhe40 expression was downregulated both in MCAO/R animal models and OGD/R-induced SH-SY5Y cells. Bhlhe40 overexpression inhibited cell apoptosis and reduced ROS production in SH-SY5Y cells after OGD/R treatment. MiR-494-3p was verified to bind to Bhlhe40 and negatively regulate Bhlhe40 expression. Additionally, cell apoptosis and ROS production in OGD/ R-treated SH-SY5Y cells were accelerated by miR-494-3p overexpression. Rescue experiments suggested that Bhlhe40 could reverse the effects of miR-494-3p overexpression on ROS production and cell apoptosis. @*Conclusion@#MiR-494-3p exacerbates brain injury and neuronal injury by regulating Bhlhe40 after I/R.

Research on the systematization of sports students in scientific exercise training / Pesquisa sobre a sistematização do treinamento científico esportivo de alunos de educação física / Investigación sobre la sistematización de la formación deportiva científica de los estudiantes de educación física

ABSTRACT Introduction: It is not unusual that students do not like physical education. It has become a common educational phenomenon in current school physical education. Students have become less participative in physical education, serious and cold, less enjoyable, and stressed. The emergence of this series of changes is not entirely a matter of student attitudes. Objective: Aiming at school students who like sports but do not fall in love with physical education, participation quality continues to decline, students do not exercise themselves, and have no concept of exercise load. This research aims to learn and master the knowledge and skills of physical exercise through a digital fitness teaching system, effectively improve students' scientific exercise ability, mobilize students' hobbies to actively participate in physical exercise, improve the unscientific physical exercise habits of students in the past, promote students' physical and mental health, and lay the foundation for lifelong physical education. Methods: The methods studied in this article mainly include an experimental method, document method, expert interview method, questionnaire survey method, mathematical analysis method and other methods. Results: After two weeks of experimental preparation and ten weeks of teaching experiments to develop students' physical exercise ability, the students' aerobic exercise ability has been steadily improved. Through the digital fitness teaching system, students' interest in participating in physical exercise is strengthened and the cultivation of sports emotions and physical habits, improving the school's physical exercise environment and meeting students' physical exercise needs. Conclusions: The digital fitness teaching system is in the development and test stage. The first generation of digital fitness bikes has many problems with hardware and software. As an important supplementary form of school physical education under the new situation, this system greatly promotes students' lifelong physical education and learning scientific physical exercise. Level of evidence II; Therapeutic studies - investigation of treatment results.

RESUMO Introdução: Não é incomum que os alunos não gostem de educação física. Tornou-se um fenômeno educacional comum na educação física escolar atual. Os alunos tornaram-se menos engajados na educação física, sérios e descolados, menos agradáveis e estressados. O surgimento dessa série de mudanças não é exclusivamente uma questão de atitudes dos alunos. Objetivo: Visando alunos que gostam de esportes, mas não se apaixonam por educação física, a qualidade da participação continua em declínio, os alunos não praticam exercícios e não têm noção de carga de exercícios. Esta pesquisa tem como objetivo aprender e dominar os conhecimentos e habilidades de exercício físico através de um sistema de ensino de fitness digital, efetivamente melhorar a capacidade de exercício científico dos alunos, mobilizar os hobbies dos alunos para participarem ativamente do exercício. Aptidão física, melhorar os hábitos de exercícios físicos não científicos dos alunos em passado, promover a saúde física e mental dos alunos e estabelecer as bases para a educação física ao longo da vida. Métodos: Os métodos estudados neste artigo incluem principalmente um método experimental, método de documento, método de entrevista com especialista, método de pesquisa por questionário, método de análise matemática e outros métodos. Resultados: Após duas semanas de preparação experimental e dez semanas de experimentos de ensino para desenvolver a capacidade de exercício físico dos alunos, a capacidade de exercício aeróbio dos alunos tem melhorado continuamente. Através do sistema de ensino de fitness digital, o interesse dos alunos em praticar exercícios físicos e o cultivo de emoções e hábitos de esportes físicos é potencializado, melhorando o ambiente de exercícios físicos da escola e satisfazendo as necessidades de exercícios físicos dos alunos. Conclusões: O sistema digital de ensino de fitness está em desenvolvimento e testes. A primeira geração de bicicletas de fitness digitais tem muitos problemas com hardware e software. Como uma importante forma complementar de educação física escolar na nova situação, esse sistema promove enormemente a educação física ao longo da vida dos alunos e o aprendizado de exercícios físicos científicos. Nível de evidência II; Estudos terapêuticos: investigação dos resultados do tratamento.

RESUMEN Introducción: No es raro que a los estudiantes no les guste la educación física. Se ha convertido en un fenómeno educativo común en la educación física escolar actual. Los estudiantes se han vuelto menos participativos en educación física, serios y fríos, menos agradables y estresados. El surgimiento de esta serie de cambios no es exclusivamente una cuestión de actitudes de los estudiantes. Objetivo: Apuntando a escolares a los que les guste el deporte pero no se enamoren de la educación física, la calidad de la participación sigue decayendo, los alumnos no se ejercitan y no tienen concepto de carga de ejercicio. Esta investigación tiene como objetivo aprender y dominar el conocimiento y las habilidades del ejercicio físico a través de un sistema de enseñanza de fitness digital, mejorar eficazmente la capacidad de ejercicio científico de los estudiantes, movilizar los pasatiempos de los estudiantes para participar activamente en el ejercicio físico, mejorar los hábitos de ejercicio físico no científicos de los estudiantes en el pasado, promover la salud física y mental de los estudiantes y sentar las bases para la educación física de por vida. Métodos: Los métodos estudiados en este artículo incluyen principalmente un método experimental, método de documento, método de entrevista a expertos, método de encuesta por cuestionario, método de análisis matemático y otros métodos. Resultados: Después de dos semanas de preparación experimental y diez semanas de experimentos de enseñanza para desarrollar la capacidad de ejercicio físico de los estudiantes, la capacidad de ejercicio aeróbico de los estudiantes ha mejorado de manera constante. A través del sistema de enseñanza digital de fitness se potencia el interés de los estudiantes por participar en el ejercicio físico y el cultivo de las emociones y hábitos físicos deportivos, mejorando el entorno de ejercicio físico del colegio y satisfaciendo las necesidades de ejercicio físico de los estudiantes. Conclusiones: El sistema de enseñanza de fitness digital se encuentra en etapa de desarrollo y prueba. La primera generación de bicicletas fitness digitales tiene muchos problemas con el hardware y el software. Como una forma complementaria importante de educación física escolar en la nueva situación, este sistema promueve en gran medida la educación física a lo largo de la vida de los estudiantes y el aprendizaje del ejercicio físico científico. Nivel de evidencia II; Estudios terapéuticos: investigación de los resultados del tratamiento.

The value of oxygen index and base excess in predicting the outcome of neonatal acute respiratory distress syndrome

Abstract Objective This study aimed to identify the predictors and threshold of failure in neonatal acute respiratory distress syndrome. Methods Newborns with severe acute respiratory distress syndrome aged 0-28 days and gestational age ≥36 weeks were included in the study if their cases were managed with non-extra corporal membrane oxygenation treatments. Patients were divided into two groups according to whether they died before discharge. Predictors of non-extra corporal membrane oxygenation treatment failure were sought, and the threshold of predictors was calculated. Results A total of 103 patients were included in the study. A total of 77 (74.8%) survived hospitalization and were discharged, whereas 26 (25.2%) died. Receiver operating characteristic analysis of oxygen index, pH, base excess, and combinations of these indicators demonstrated the advantage of the combination of oxygen index and base excess over the others variables regarding their predictive ability. The area under the curve for the combination of oxygen index and base excess was 0.865. When the cut-off values of oxygen index and base excess were 30.0 and −7.4, respectively, the sensitivity and specificity for predicting death were 77.0% and 84.0%, respectively. The model with base excess added a net reclassification improvement of 0.090 to the model without base excess. Conclusion The combination of oxygen index and base excess can be used as a predictor of outcomes in neonates receiving non-extra corporal membrane oxygenation treatment for acute respiratory distress syndrome. In neonates with acute respiratory distress syndrome, if oxygen index >30 and base excess <−7.4, non-extra corporal membrane oxygenation therapy is likely to lead to death.

Expert consensus on clinical management of metabolic bone disease of prematurity (2021) / 中国当代儿科杂志

Metabolic bone disease of prematurity (MBDP) is a systemic bone disease with a reduction in bone mineral content due to disorder of calcium and phosphorus metabolism. There is still a lack of in-depth research and systematic understanding of MBDP in China, and there are many irregularities in clinical management of this disease. Based on relevant studies in China and overseas, Grading of Recommendations Assessment, Development and Evaluation was used to develop the expert consensus on the clinical management of MBDP, which provides recommendations from the following five aspects: high-risk factors, screening/diagnosis, prevention, treatment, and post-discharge follow-up of MBDP, so as to provide relevant practitioners with recommendations on the clinical management of MBDP to reduce the incidence rate of MBDP and improve its short- and long-term prognosis.

Research Progress in Genetic Research of Fatigue / 中国实验方剂学杂志

Fatigue refers to the manifestation of disorders in the process of carrying out or maintaining random activities， which can be regarded as an independent disease or as a symptom in a variety of chronic diseases. The high incidence of fatigue has seriously affected people's physical and mental health， and the prevention and treatment of fatigue has become an important problem to be solved urgently. The pathogenesis of fatigue mainly includes energy consumpation， accumulation of metabolites， abnormal secretion of neurotransmitters， decline of mitochondrial function， dysfunction of hypothalamus pituitary adrenal axis， etc. At present， there is no unified understanding about the pathogenesis of fatigue at home and abroad. The gene research of fatigue is the current research frontier. Gene expression profiling provides a new method for the study of the mechanism of fatigue. The combination of gene chip technology and traditional Chinese medicine（TCM） theory is expected to bring a breakthrough in the study of the pathogenesis of fatigue. In the study of fatigue gene chip， messenger RNA（mRNA） and microRNA（miRNA） are the common research objects， but few explorations are focused on the gene expression rule of fatigue by a specific signaling pathway and the effective regulation targets of TCM for treating fatigue. In recent years， the dysfunction of reward and inhibition mechanism in the central nervous system has become a research hotspot. In particular， gamma amino butyric acid （GABA） and dopamine （DA） have attracted much attention as the main substances of inhibition and reward mechanism， respectively. GABA and DA are used as inhibition and reward mechanisms to maintain the balance， and the body will not feel fatigue. Once the balance is broken， the fatigue will be formed. At the same time， DA and GABA receptors can also regulate cyclic adenosine monophosphate signaling pathway（cAMP） to affect fatigue. The research on key genes in GABA/DA balance mechanism and related cAMP signaling pathway by gene chip technology is expected to reveal the pathogenesis of fatigue in depth. The gene chip method is used to detect the changes of key genes in GABA/DA pathway and the related cAMP signaling pathway in the fatigue population and the normal population， so as to further explore the pathogenesis of fatigue. In this paper， the key genes in GABA/DA balance mechanism and cAMP signaling pathway related to fatigue were summarized by using the review method， so as to provide the basis for further study on the pathogenesis of fatigue and effective prevention and treatment from the perspective of genetics.

Pulmonary deportation of hydatidiform mole: a 12-year, single tertiary center experience in China / 中华医学杂志(英文版)

BACKGROUND@#Pulmonary deportation of hydatidiform mole is an exceedingly rare entity. The underlying mechanisms and proper management strategies remain unclear based on sporadic case reports over the past six decades. This study aimed to investigate the clinical features and rational treatment of patients with benign molar pregnancies with pulmonary deportation based on our experience.@*METHODS@#Medical records of 20 cases of hydatidiform mole with pulmonary deportation were retrospectively reviewed at Peking Union Medical College Hospital from November 2006 to May 2019. The detailed information of all patients was recorded and analyzed. Patients were divided into different groups according to their characteristics and Mann-Whitney U test was used to compare the duration to achieve a normal β-human chorionic gonadotrophin (β-hCG) level after the first evacuation among groups.@*RESULTS@#Initial pulmonary computed tomography scans showed suspected bilateral, left and right chest deportation of hydatidiform mole in 12, four, and four patients, respectively, with the maximum nodular diameter ranging from 0.6 to 1.2 cm. Ten patients achieved lesion resolution while the remaining ten patients achieved decreases in the size of their pulmonary lesions. The median duration to achieve a normal β-hCG level after the first evacuation was 15.5 (13.0, 21.9) weeks. There was no significant difference in the duration to achieve a normal β-hCG level after the first evacuation between two groups based on age (≥40 years vs. 0.5 cm vs. ≤0.5 cm: 13.0 [11.3, 17.2] weeks vs. 16.0 [14.5, 23.8] weeks, Z = 1.815, P = 0.070), and number of uterine evacuations (once vs. twice or three times: 15.0 [13.0, 16.3] weeks vs. 16.0 [12.8, 23.9] weeks, Z = 0.832, P = 0.405). The post-molar cohort was followed up for 17 to 139 months, and no gestational trophoblastic neoplasia was observed.@*CONCLUSIONS@#No surgeries other than uterine evacuation and no chemotherapy regimens are recommended for such patients if they achieve satisfactory decreases in the level of hCG and gradual decrease or disappearance of pulmonary deportation nodules. Patients should be informed about the necessity of long-term follow-up. More collaborative international studies on this exceedingly rare condition may guide decisions regarding optimal management strategies.

Mining and discovery for active components of "Coptidis Rhizome-Magnoliae Officinalis Cortex" based on network pharmacology / 中国中药杂志

To mine and discover the active components of " Coptidis Rhizome-Magnoliae Officinalis Cortex( C&M) " based on the network pharmacology,integrate and analyze the potential targets and mechanisms. The TCMSP database was used to screen active ingredients. TTD and Drug Bank databases were used to predict the potential targets by referring to relevant literature,and the pathway annotation technology was used to enrich and analyze the active ingredients and potential targets of " C&M". A total of 29 potential target active ingredients were screened from " C&M",including 12 alkaloids components such as( R)-canadine,berberine,coptisine,and palmatine; 3 lignans consisting of magnolol,honokiol and obovatol; 6 volatile oils consisting of α-eudesmol,β-eudesmol,eucalyptol and so on,and flavonoids including quercetin and neohesperidin. Corresponding 199 predicted targets were screened out,mainly including PTGS2,PTGS1,NCOA2,Hsp90 AB1,and so on. 72 signaling pathways were involved,8 of which were related to cancer,such as prostate cancer,bladder cancer,and pancreatic cancer; 9 of which were related to endocrine,including oxytocin signaling pathway,insulin signaling pathway,thyroid hormone signaling pathway and so on,as well as inflammation-related pathway. This study has preliminarily mined and discovered the main active components and potential targets of " C&M",providing material source for the study on the preparation of structural components of traditional Chinese medicine.

Comparative study with the effect of stromal cell derived factor-1 on osteogenic differentiation of human healthy and inflammatory periodontal ligament stem cells / 华西口腔医学杂志

OBJECTIVE@#This study aims to compare the osteogenic differentiation capability of stem cells derived from human inflammatory periodontal ligament tissues (iPDLSCs) with those of stem cells derived from healthy periodontal ligament tissues (hPDLSCs). Both types of tissues were induced by stromal cell derived factor (SDF-1) in vitro.@*METHODS@#iPDLSCs and hPDLSCs were primarily cultured by tissue digestion method and purified by limited dilution cloning. The cells were passaged and identified by stem cell surface marker expression through flow cytometry. Then, we used thiazolyl blue tetrazolium bromide to detect and compare the proliferation capabilities of the iPDLSCs and hPDLSCs. Express of bone volumes were detected by alizarin red staining after SDF-1 was added to the cells. Using alkaline phosphatase, we evaluated the osteogenic differentiation capability of the cells induced by SDF-1. The expression levels of the osteogenesis-related genes of the cells induced by SDF-1 were determined by reverse transcription-polymerase chain reaction.@*RESULTS@#After purification, both iPDLSCs and hPDLSCs expressed stem cell markers. hPDLCSs had a higher proliferation capability than iPDLSCs. Osteogenesis-related genes had higher expression levels in the cells induced by SDF-1 than in those without induction (P<0.05). SDF-1 at 50 and 200 ng·mL⁻¹ concentration greatly affected the differen-tiation capabilities of iPDLSCs and hPDLSCs respectively.@*CONCLUSIONS@#iPDLSCs and hPDLSCs had osteogenic differentia-tion capability. The level of osteogenic differentiation in normal and inflamed periodontal ligament stem cells increases after SDF-1 induction.

Evodiamine activates cellular apoptosis through suppressing PI3K/AKT and activating MAPK in glioma / 中国药理学与毒理学杂志

OBJECTIVE Glioblastoma multiforme (GBM) is the most malignant primary tumor of the central nervous system and is associated with a very poor prognosis. No further improvements in outcomes have been reported since radiotherapy-temozolomide therapy was introduced.Therefore,de-veloping new agents to treat GBM is important. This study aimed to evaluate the anti-tumor effect of evodiamine (Evo) on GBM cells, and to determine the underlying mechanisms involved. METHODS U251,LN229,HEB and PC12 cells were treated with various concentrations of evodiamine for 24 and 48 hours,cell viability was measured by MTT assay.The U251 and LN229 cells were treated with evo-diamine(0-10 μmol·L-1)for 24 h,and then stained with Hoechst 33258.An Annexin V-FITC Apoptosis Detection Kit was used to detect apoptosis in the cells.Reactive oxygen species(ROS)production was detected using dichlorofluorescein diacetate (DCFH-DA) staining. The changes in mitochondrial mem-brane potential (MMP) were assessed by JC-1 after cells were treated with evodiamine. The expres-sion levels of p-PI3K,PI3K,p-Akt,Akt,Bax,Bcl-2,p-p38,p38,p-JNK,JNK,p-ERK,ERK,Cytochrome c, Caspase-3, cleaved Caspase-3, PRAP, and cleaved PARP were measured by Western blot analy-ses. RESULTS According to MTT assay results, Evo significantly inhibited the cell proliferation in a time- and dose-dependent manner. Fluorescence microscopy and flow cytometry analyses revealed that Evo induced cell apoptosis in a concentration-dependent manner.Moreover,Evo induced reactive oxygen species (ROS) production and mitochondrial membrane potential (MMP) disruption. Finally, Evo induced apoptosis in cancer cells by suppressing PI3K/AKT signaling and inducing MAPK phos-phorylation(p38 and JNK,but not ERK)to regulate apoptotic proteins(Bax,Bcl-2,Cytochrome c,Cas-pase-3, and PARP). CONCLUSION In summary, Evo inhibits cell proliferation by inducing cellular apoptosis via suppressing PI3K/AKT and activating MAPK in GBM;these results indicate that Evo may be regarded as a new approach for GBM treatment.

Analysis on 4 cases of polycythemia vera transforming to acute myeloid leukemia / 重庆医学

Objective To explore the clinical characteristics,diagnosis and treatment of polycythemia vera(PV) transforming to acute myeloid leukemia(AML).Methods The clinical features and process of diagnosis and treatment in 4 cases of PV transforming to AML were analyzed.Results The case 1 had 10 years history of PV,after experiencing PV,had myelofibrosis and transformed to AML at the end stage of natural disease course;the case 2 had 7 years history of PV,orally took hydroxyurea(HU) treatment in recent 2 years and transformed to AML at present,his chromosome karyotype analysis showed 46,XY,del(7)(q31q36),del (18) (q22)[10],which was considered as treatment-related AML;the case 3 and 4 orally took H U for a long time after diagnosing HU,and respectively turned into AML during the pathologic polyemia stage after 6 and 7 years.Conclusion PV can be transformed to AML,the safety of HU in treatment should by paid attention to.

Photosynthetic production of wheat under precision planting patterns in northern china / Produção fotossintética de trigo através de padrões de plantação de precisão no norte da china

Winter wheat (Triticum aestivum) is cultivated across a wide region; however, water is scarce during the growing season of wheat in the Northern Plain of China. Therefore, winter wheat should be irrigated to maintain a stable and high grain yield. The aim of this field study was to develop a water-conserving precision planting pattern for winter wheat that is grown in the Northern China Plain with the purpose of exploring the benefits in maintaining water and effects on wheat productivity. To accomplish this, several production variables and photosynthetic indexes were measured, including the number of stems, the leaf area index (LAI), photosynthetically available radiation (PAR), net photosynthetic rate, and grain yield. The study was carried out during the 2011­2012 and 2012­2013 winter wheat growing seasons. The experiment included a double-row planting pattern (DRPP) and a single-row planting pattern (SRPP), both of which were either irrigated or rainfed. The area of each plot was 9 m2, and the experimental design was a randomized blocks design with three replicates. All results were analyzed with an ANOVA, the F test, and the LSD (p 0.05) for means comparison. PAR capture ratios in the DRPP were higher than those in the SRPP at 50­120 cm above the ground. The photosynthetic traits of flag leaves under irrigated conditions were not significantly influenced by the respective planting pattern. However, at a growth stage of 80 under the rainfed conditions, the mean photosynthetic rate within flag leaves in the DRPP was higher than that in the SRPP. Furthermore, the DRPP under rainfed conditions was more likely to increase the apparent quantum yield (AQY) of flag leaves than the yield obtained under irrigation. These results suggest that DRPP optimizes the canopy PAR distribution in winter wheat and contributes to the maintenance of a higher photosynthetic capacity in the flag leaves under water stress (the rainfed condition). This relationship may be applied in demonstration trials to encourage winter wheat farmers to incorporate the use of DRPP in the drought-prone areas, which are subjected to insufficient precipitation during the growing stage of wheat in Northern China.

O trigo de inverno (Triticum aestivum) é cultivado em uma vasta região; no entanto, a água é escassa durante a estação de crescimento do trigo na Planície do Norte da China. Assim, o trigo de inverno deve ser irrigado para manter um rendimento de grãos estável e elevado. O objetivo deste trabalho de campo foi o de desenvolver um padrão de plantação de precisão que conserve a água para o trigo de inverno que é cultivado na Planície do Norte da China com o propósito de explorar os benefícios da retenção de água e os efeitos na produtividade do trigo. Para isso, diversas variáveis de produção e índices fotossintéticos foram medidos, incluindo o número de hastes, o índice de área da folha (do inglês, LAI - leaf area index), a radiação fotossinteticamente disponível (do inglês, PAR - photosynthetically available radiation), taxa fotossintética líquida e o rendimento de grãos. O estudo foi conduzido durante as estações de crescimento do trigo de inverno em 2011-2012 e 2012-2013. O experimento incluiu um padrão de plantação em fila dupla (do inglês, DRPP - double-row planting pattern) e um padrão de plantação em fila única (do inglês, SRPP - single-row planting pattern), em ambos os casos ou foram irrigados artificialmente ou através da chuva (regadio e sequeiro). A área de cada lote de terra foi de 9 m2, e o delineamento experimental foi um de blocos aleatórios com três repetições. Todos os resultados foram analisados com uma ANOVA, um teste F, e um LSD (p 0.05) para a comparação das médias. As taxas de captura de PAR no DRPP foram maiores do que aquelas no SRPP a 50-120 cm acima do solo. As características fotossintéticas das folhas-bandeira (do inglês, flag leaves) sob condições de irrigação artificial não foram significativamente influenciadas pelo respectivo padrão de plantação. No entanto, num estágio de crescimento de 80% abaixo das condições de irrigação pela chuva, a taxa fotossintética média dentre as folhas-bandeira no DRPP foi maior que aquela observada no SRPP. Além disso, o DRPP sob condições de irrigação pela chuva foi mais suscetível ao aumento do rendimento quântico aparente (do inglês, AQY - apparent quantum yield) das folhas-bandeira do que o rendimento obtido através da irrigação artificial. Estes resultados sugerem que o DRPP otimiza a distribuição PAR do dossel no trigo de inverno e contribui para a manutenção de uma maior capacidade fotossintética nas folhas bandeira sob estresse hídrico (a condição de sequeiro). Esta relação pode ser aplicada em ensaios de demonstração para encorajar os agricultores de trigo de inverno a incorporar o uso do DRPP em áreas propensas à seca, que estão submetidas a precipitação insuficiente durante a fase de crescimento do trigo no Norte da China.

Upper Limb Rehabilitation Game System Based on Somatosensory Technique:Assessment Module / 中国康复理论与实践

Objective To develop a upper limb motor function rehabilitation system based on somatosensory interaction technique,and test the work of assessment module.Methods A 3D rehabilitation game system was developed based on the skeletal tracking of Kinect and Unity3D.Five subjects were trained with four actions commonly used for upper limb rehabilitation with the trajectory guidance or without, and were evaluated with the system.Results The scores of all the actions were more with the trajectory guidance than without.Conclusion Upper limb rehabilitation training game system has been developed based on Kinect, which can guide patients for rehabilitation training through trajectory guidance and assess the outcome of rehabilitation quantitatively.

Expression of serum IgG4 in patients with different diseases / 北京大学学报(医学版)

Objective:To investigate serum IgG4 levels in different diseases and the changes of serum IgG4 levels in post treatment of IgG4 related disease.Methods:Clinical data of 620 patients who received investigation of serum IgG4 in Peking University People's Hospital from January 1,2015 to March 31,2016 were collected retrospectively.According to the difference of the diseases,they were divided into common group of diseases,autoimmune diseases and IgG4 related diseases;pancreatic disease patients were divided into autoimmune pancreatitis and pancreatic cancer group;According to different treatment stages of the disease,the patients with IgG4 related diseases were divided into pretreatment group and post treatment group.And the expressions of the patients' serum IgG4 levels in different groups were analyzed.Results:The median serum IgG4 level in the group of the patients with common diseases was 0.480 (0.005,50.400) g/L,in the group of autoimmune disease was 0.406 (0.003,18.700) g/L,in the group of IgG4 related diseases was 5.200(0.046,46.000) g/L,which was significantly higher in the group of IgG4 related diseases than the other two groups,and there was obvious statistical significance in serum IgG4 levels between the group of IgG4 related diseases and the other two groups (P ＜0.01);There was no obvious difference in serum IgG4 levels between the common disease group and the autoimmune disease group,and there was no obvious statistical difference in serum IgG4 levels between the two groups (P ＞ 0.05).In the patients with IgG4 related diseases,the median serum IgG4 level in the group of pretreatment patients was 6.540 (1.330,34.100) g/L,and 3.735 (0.063,46.000) g/L in the post treatment patients.Serum IgG4 levels decreased in post treatment group,significantly lower than in pretreatment,there was obvious statistical difference in serum IgG4 levels between the two groups (P ＜ 0.01).The median serum IgG4 level in the group of patients with autoimmune pancreatitis was 3.735 (0.063,46.000) g/L,and 0.438 (0.056,1.130) g/L in the group of patients with pancreatic cancer,which was significantly higher in the group of patients with autoimmune pancreatitis than the others,and there was obvious statistical difference in serum IgG4 levels between the two groups (P ＜0.01).Conclusion:Serum IgG4 levels in patients with different diseases were different,and were significantly higher in patients with autoimmune pancreatitis and IgG4 related diseases,so serum IgG4 levels can provide the basis for the differential diagnosis of different diseases;Serum IgG4 levels in patients with IgG4 related diseases decrease significantly after treatment,so it can be used as an important index to evaluate the curative effect of IgG4 related diseases.

Endoscopic characteristics of multidrug-resistant tuberculosis combined with tracheobronchial tuberculosis / 中国内镜杂志

Objective To explore the endoscopic characteristics of multidrug-resistant tuberculosis (MDR-TB) combined with tracheobronchial tuberculosis (TBTB). Methods 248 MDR-TB as study group, they hospitalized from October 1st 2008 to June 31st, 2016. 274 cases of non MDR-TB with bacteria positive as control group over 2015, all of them received bronchoscopy, sputum cultured and drug sensitivity tested of Isoniazid and Rifampicin. We analyzed the results of bronchoscopy and demographic data. Results 248 cases of MDR-TB patients, of 175 (70.56%) were diagnosed TBTB by bronchoscopy, of 73 (29.44%) without TBTB. 274 cases of non MDR-TB with bacteria positive patients, of 146 (53.28%) were diagnosed TBTB, of 128 (46.72%) non TBTB, the difference of comparisons was statistically significant (χ2 = 16.42, P = 0.000). MDR-TB combined with TBTB median age was 32 years, non MDR-TB combined with TBTB median age 42 years, the difference was statistically significant (U = 9932.00, P = 0.001). Among the MDR-TB patients, of 75 (42.86%) TBTB in the upper right bronchial, of71 (40.57%) upper left bronchus, while non MDR-TB patients, of 70 (47.95%) and 60 (41.10%), there was no statistically significant difference (χ2 = 2.44, P = 0.786). Among the MDR-TB, of 76 (43.43%) were inflammation infiltration type, of 11 (6.29%) were necrosis type, of 13 cases (7.43%) granulation proliferative type, of 72 (41.14%) were scar stricture type, of 3 (1.71%) tube wall softening type. Among the non MDR-TB, in turn, TBTB type were 50 (34.25%), 41 (28.08%), 9 (6.16%), 40 (27.40%), 5 (3.43%), the difference were statistically significant (χ2 = 30.50, P = 0.000). Conclusions The detection rate of TBTB was higher in MDR-TB patients, that common occur in younger patients. TBTB common infringe on upper right bronchial and upper left bronchus, TBTB type most are inflammatory infiltration type and scar stricture type. More attention should be paid to bronchoscopy among MDR-TB patients.

Development of diabetes mellitus ontology and realization of semantic inference / 中华医学图书情报杂志

Objective To lay the foundation for the successive research on diabetes mellitus (DM) management system and provide support for the general doctors at grass root level to make decisions by developing DM ontology database and DM diagnosis and treatment database for semantic inference, reuse of DM knowledge, revealing and sharing potential DM knowledge. Methods The DM ontology was established on the Stanford University Protégé Platform according to the 7-step method and skeletal method by extracting the concepts of DM ontology database and DM diagnosis and treatment database, and their relationship from domestic DM-related clinical guidelines and knowledge of DM experts. The SWRL diagnosis and treatment rules were then composed and the semantic inference was realized using the JESS inference engine. Results The developed DM ontology database and DM diagnosis and treatment database included 233 concepts, 205 examples, 16 relationships between examples, 18 data value properties, 28 SWRL rules, which could thus realize the semantic inference. Conclusion The developed DM ontology can realize semantic inference and is thus beneficial for the application of ontology technology in diagnosis and treatment of chronic disease.

Research progress in pain management in hysteroscopy / 中国内镜杂志

Hysteroscopy as the gold standard in the diagnosis of intrauterine lesions has been widely recognized. Although it has a good acceptability, without anesthesia or analgesia drug, pain is still the main reason for the failure of hysteroscopy. This paper reviews the research progress in the influence factors of causing the pain of hysteroscopy and the different oral analgesic drugs, ways of local anesthesia, non-drug interventions.

Genotyping of hepatitis C virus by PCR-fluorescent probe in Qingyang area / 中国免疫学杂志

Objective:To detect the genotyping of hepatitis C virus by PCR-fluorescent probe in Qingyang area,and to evaluate the performance of PCR-fluorescent probe. Methods:The clinical data and peripheral venous blood of patients with HCV were collected (n=289). PCR-fluorescent probe was used to detect the genotype and HCV RNA of hepatitis C virus,and compare with PCR reverse dot blot,RT nested-PCR. Results:Among 289 samples detected by PCR-fluorescent probe,the rate of genotyping of hepatitis C virus was 99. 3%(287/289),and 139 for 1b(48. 1%),136 for 2a(47. 1%),7 for 3a(2. 4%),5 for 3b(1. 7%),2 for unknow(0. 7%). The specificity and efficiency was 100%,better repeatability,consistent with PCR reverse dot blot and RT nested-PCR(98. 2%,P>0. 05). The ALT,AST,PLT and HCVRNA(lg)for 1b patients was higher than 2a(P<0. 05). Conclusion:Multi-genotype distribution of HCV was revealed in the hepatitis C patients of Qingyang,1b and 2a were the main genotypes,and the ratio was equal,2a was increased,1b was declined. The sensibility and specificity was higher for PCR-fluorescent probe,and could be used in clinic.

Development of diabetes mellitus ontology and realization of semantic inference / 中华医学图书情报杂志

Objective To lay the foundation for the successive research on diabetes mellitus (DM) management system and provide support for the general doctors at grass root level to make decisions by developing DM ontology database and DM diagnosis and treatment database for semantic inference, reuse of DM knowledge, revealing and sharing potential DM knowledge. Methods The DM ontology was established on the Stanford University Protégé Platform according to the 7-step method and skeletal method by extracting the concepts of DM ontology database and DM diagnosis and treatment database, and their relationship from domestic DM-related clinical guidelines and knowledge of DM experts. The SWRL diagnosis and treatment rules were then composed and the semantic inference was realized using the JESS inference engine. Results The developed DM ontology database and DM diagnosis and treatment database included 233 concepts, 205 examples, 16 relationships between examples, 18 data value properties, 28 SWRL rules, which could thus realize the semantic inference. Conclusion The developed DM ontology can realize semantic inference and is thus beneficial for the application of ontology technology in diagnosis and treatment of chronic disease.