Establishment and validation of nomogram prediction model of cefoperazone/sulbactam-induced thrombocytopenia / 中国药房

OBJECTIVE To explore the predictive factors of cefoperazone/sulbactam-induced thrombocytopenia in adult inpatients， and to establish and validate the nomogram prediction model. METHODS Data of adult inpatients treated with cefoperazone/sulbactam in Xi’an Central Hospital from Jun. 30th， 2021 to Jun. 30th， 2023 were retrospectively collected. The training set and internal validation set were randomly constructed in a 7∶3 ratio. Singler factor and multifactor Logistic regression analysis were used to screen the independent predictors of cefoperazone/sulbactam-induced thrombocytopenia. The nomogram was drawn by using “RMS” of R 4.0.3 software， and the predictive performance of the model was evaluated by the receiver operating characteristic curve and C-index curve. Hosmer-Lemeshow goodness-of-fit test was used to evaluate the calibration degree of the model. Using the same standard， the clinical data of hospitalized patients receiving cefoperazone/sulbactam in Xi’an First Hospital in the same period were collected for external validation of the nomogram prediction model. RESULTS A total of 1 045 patients in Xi’an Central Hospital were included in this study， among which 67 patients suffered from cefoperazone/sulbactam-induced thrombocytopenia， with an incidence of 6.41%. After the false positive patients were excluded， 473 patients were included finally， including 331 in the training set and 142 in theinternal validation set. Multifactor Logistic regression analysis showed that age [OR＝1.043， 95%CI （1.017， 1.070）]， estimated glomerular filtration rate （eGFR） [OR＝0.988，95%CI（0.977， 0.998）]， baseline platelet （PLT） [OR＝0.989， 95%CI（0.982， 0.996）]， nutritional risk [OR＝3.863， 95%CI（1.884， 7.921）] and cumulative defined daily doses （DDDs） [OR＝1.082， 95%CI（1.020， 1.147）] were independent predictors for cefoperazone/sulbactam-induced thrombocytopenia （P＜0.05）. The C-index values of the training set and the internal validation set were 0.824 [95%CI （0.759， 0.890）] and 0.828 [95%CI （0.749， 0.933）]， respectively. The results of the Hosmer-Lemeshow test showed that χ 2 values were 0.441 （P＝0.802） and 1.804 （P＝0.406）. In the external validation set， the C-index value was 0.808 [95%CI （0.672， 0.945）]， the χ 2 value of the Hosmer-Lemeshow test was 0.899 （P＝0.638）. CONCLUSIONS The independent predictors of cefoperazone/sulbactam-induced thrombocytopenia include age， baseline PLT， eGFR， nutritional risk and cumulative DDDs. The model has good predictive efficacy and extrapolation ability， which can help clinic identify the potential risk of cefoperazone/sulbactam-induced thrombocytopenia quickly and accurately.

Condiciones de trabajo y el cuidado de sí en profesionales de enfermería en la atención domiciliaria de adultos mayores dependientes / Condições de trabalho e autocuidado dos profissionais de enfermagem na assistência domiciliar a idosos dependentes / Working conditions and self-care of nursing professionals in home care of dependent older adults

Introducción: La atención a domicilio de adultos mayores dependientes es una tarea compleja que requiere de profesionales de enfermería altamente capacitados. Sin embargo, las condiciones laborales adversas y la falta de atención al cuidado de sí mismo ponen en riesgo su salud y bienestar, así como la calidad del cuidado que brindan. Objetivo: Describir las condiciones de trabajo y el cuidado de sí en profesionales de enfermería en la atención domiciliaria de adultos mayores dependientes. Metodología: Investigación cualitativa de diseño narrativo utilizando la teoría del cuidado de sí de Michel Foucault. Muestreo por bola de nieve. Criterios de selección: ser enfermero(a) de atención domiciliaria, tener bajo su cuidado a adultos mayores dependientes y firmar el consentimiento informado. Recolección de datos mediante entrevistas semiestructuradas, grabadas y transcritas textualmente para ser analizadas con ayuda del software ATLAS.ti. Participantes: 9 profesionales de enfermería domiciliaria independiente. Resultados: Emergieron 2 categorías: 1) La familia en el cuidado y 2) El lado doloroso del cuidado. Conclusiones: Además de las habilidades de comunicación eficaz para solicitar las adaptaciones arquitectónicas de la vivienda y la colaboración de los familiares, se hace evidente que cuando se usan las tecnologías de la teoría de Michel Foucault, se promueve el cuidado de sí de la enfermera. Discusión: La capacidad para tomar conciencia sumado al pensamiento crítico, son necesarios para tener el poder y autonomía sobre las decisiones que se llevan a cabo en el trabajo, reduciendo riesgos e injusticias en el ámbito que se encuentre y promover el cuidado de sí.

Introduction: Home care of dependent older adults is a complex task that requires highly trained nursing professionals. However, adverse working conditions and lack of attention to self-care jeopardize their health and well-being, as well as the quality of care they provide. Objective: To describe the working conditions and self-care of nursing professionals in the home care of dependent older adults. Methodology: Qualitative research of narrative design using Michel Foucault's theory of self-care. Snowball sampling. Selection criteria: to be a home care nurse, to have dependent older adults under his/her care and to sign the informed consent form. Data collection through semi-structured interviews, recorded and transcribed verbatim for analysis using ATLAS.ti software. Participants: 9 independent home nursing professionals. Results: 2 categories emerged: 1) The family in caregiving and 2) The painful side of caregiving. Conclusions: In addition to effective communication skills to request architectural adaptations of the home and the collaboration of family members, it is evident that when the technologies of Michel Foucault's theory are used, the nurse's self-care is promoted. Discussion: The ability to be aware and critical thinking are necessary to have power and autonomy over the decisions that are carried out at work, reducing risks and injustices in the field and promoting self-care.

Introdução: O atendimento domiciliar de idosos dependentes é uma tarefa complexa que exige profissionais de enfermagem altamente treinados. No entanto, as condições de trabalho adversas e a falta de atenção ao autocuidado prejudicam sua saúde e bem-estar, bem como a qualidade do atendimento que prestam. Objetivo: descrever as condições de trabalho e o autocuidado dos profissionais de enfermagem na assistência domiciliar a idosos dependentes. Metodologia: Pesquisa qualitativa com um projeto narrativo usando a teoria do autocuidado de Michel Foucault. Amostragem em bola de neve. Critérios de seleção: ser enfermeiro de atendimento domiciliar, estar cuidando de idosos dependentes e assinar o termo de consentimento livre e esclarecido. Coleta de dados por meio de entrevistas semiestruturadas, gravadas e transcritas literalmente para análise usando o software ATLAS.ti. Participantes: 9 profissionais independentes de enfermagem domiciliar. Resultados: Surgiram duas categorias: 1) A família no cuidado e 2) O lado doloroso do cuidado. Conclusões: Além de habilidades de comunicação eficazes para solicitar adaptações arquitetônicas na residência e a colaboração dos familiares, fica evidente que, quando as tecnologias da teoria de Michel Foucault são utilizadas, o autocuidado do enfermeiro é promovido. Discussão: A capacidade de conscientização e o pensamento crítico são necessários para ter poder e autonomia sobre as decisões tomadas no trabalho, reduzindo os riscos e as injustiças no campo e promovendo o autocuidado.

Experiencias de personas adultas con discapacidad intelectual sobre el derecho a la vida independiente: Un estudio de caso / Experiences of adults with intellectual disabilities on the right to independent living: A case study

Resumen En el ámbito de la discapacidad intelectual, el desarrollo de una vida independiente se ha configurado como un derecho humano y civil que permite a estas personas articular planes de vida deseados. Esta investigación analiza, mediante un estudio de caso, los significados que un grupo asesor compuesto por ocho personas adultas con discapacidad intelectual tiene sobre el concepto de vida independiente en el contexto chileno. Para la recopilación de los datos se diseñó una entrevista grupal semiestructurada acompañada de moodboards que facilitaron la verbalización de las respuestas. Sobre los relatos obtenidos a partir de las entrevistas se realizó un análisis de contenido temático. Los resultados muestran cómo el desempeño de una actividad laboral remunerada o el establecimiento de relaciones afectivas sólidas se conforman como elementos imprescindibles para la independencia personal. La dificultad para ser económicamente independientes o la falta de accesibilidad en el entorno laboral se identifican también como principales barreras para la concreción de este derecho. Igualmente, se destaca el rol que desempeñan la pareja y las amistades como figuras de apoyo constante a la independencia y al empoderamiento personal. Estos resultados sugieren algunas orientaciones para la planificación de intervenciones sobre este constructo, las cuales deben procurar la adquisición de habilidades que fortalezcan la capacidad de autocuidado de este colectivo, promover el incremento de oportunidades para la realización de elecciones significativas en el ámbito laboral, personal y comunitario, y adaptarse a los espacios en los que se desenvuelven las personas con discapacidad intelectual en la edad adulta.

Abstract In the field of intellectual disability, the development of an independent life has been configured as a human and civil right that allows these people to articulate desired life plans. Despite the advances, at the international level, research on aspects related to independent living in people with intellectual disabilities continues to be very scarce. Generally, the approaches to the study of this construct are based on broader investigations dedicated to evaluating the levels of quality of life or self-determination of this population in residential services or sheltered housing. Precisely, this study analyzes, through a case study, the meanings that an advisory group made up of eight adults with intellectual disabilities has on the concept of independent living in the Chilean context in order, on the one hand, to identify relevant elements for the definition of the construct from the perceptions and experiences of this population; and on the other, to propose guidelines at various levels that allow progress in the realization of this right. To collect the data, a semi-structured group interview was designed whose questions were grouped around four themes: previous conceptions of the participants about the construct of independent life, satisfaction with life and possibilities of the context for the development of personal independence, role of family, friendship and partner in independent life, and opportunities of the work context for the achievement of personal independence. During the interview, another strategy was incorporated in which visual language gained more relevance. Specifically, a set of ten moodboards were used that allowed participants to delve into the different topics addressed. The results of the code validation process were calculated using Krippendorff's alpha statistics (.954) and Cohen's kappa (.953), which showed a high level of inter-judge agreement. As a result of this process, categories (N = 6) and subcategories (N = 17) were established. The results show how various needs, barriers and facilitators for the development of independent life are identified from the interviews of the interviewees. Among the main needs is the performance of a paid work activity or the establishment of solid affective relationships. With regard to the barriers that hinder personal independence, the most notorious are related to the difficulty of being financially independent or to the lack of accessibility in the work environment. Regarding the elements that facilitate the development of an independent life, the role of the couple stands out as a constant figure of support for independence and personal empowerment. These results suggest some guidelines for planning interventions on this construct. Among others, they should seek the acquisition of skills that strengthen the self-care capacity of this group; should promote increased opportunities for making meaningful choices in the workplace, personal and community; and they must adapt to the spaces in which people with intellectual disabilities operate in adulthood. On the other hand, it is assumed that one of the main limitations of this research is that the results are not generalizable. However, this study has some strengths. Among others, it contributes to enriching the bulk of research on independent living, this being an aspect barely addressed in the literature. It also complements the results of other research regarding the elements that can condition the development of skills for personal independence. This allows for the design of interventions that provide opportunities for independent living based on the felt needs of these people. In addition, it raises future lines of research related, for example, to the importance of the informed choice of the residential environment or to the study of the possibilities of the digital world as an incident phenomenon in the acquisition of skills for personal independence.

Hiperentorno de aprendizaje con contenidos histológicos para el desarrollo del trabajo independiente del estudiante

Introducción: la información a incluir en el hiperentorno de aprendizaje con contenidos histológicos, y la funcionalidad de este para el trabajo independiente del estudiante, deben ser concebidas integradamente, en una comunión de intereses donde el programa de la asignatura aporte el flujograma pedagógico. Objetivo: diseñar un hiperentorno de aprendizaje que contribuya al desarrollo del trabajo independiente del estudiante, con los contenidos histológicos del proceso de enseñanza-aprendizaje de la asignatura Célula, Tejidos, Sistema Tegumentario, de la carrera de Medicina, en la Universidad de Ciencias Médicas de Matanzas. Materiales y métodos: como método rector se empleó la dialéctica materialista de la filosofía marxista-leninista. Métodos teóricos: histórico-lógico, analítico-documental, inductivo-deductivo, sistémico estructural funcional, modelación. Métodos empíricos: encuesta a estudiantes, entrevista a profesores, observación a clases, selección de expertos. La población estuvo conformada por 10 profesores de la asignatura y una muestra de 290 estudiantes. El trabajo realizado abarcó dos etapas y tres fases: diagnóstico, diseño y valoración de los resultados. Resultados: con relación a requisitos de diseño, la dimensión mejor evaluada fue la usabilidad (4,98). En lo referido a habilidades cognitivas, se destaca, con buenos resultados, el indicador desarrollo de habilidades de navegación en la búsqueda de información, con un valor de 9,30. Conclusiones: el hiperentorno de aprendizaje diseñado es factible, muestra facilidad de uso y funcionalidad al dar respuesta a las necesidades de los estudiantes en la asignatura; se adapta a las posibilidades del estudiante.

Introduction: the information to be included in the learning hyper-environment with histological contents, and its functionality for the student's independent work, must be conceived in an integrative way, in communion of interests where the program of the subject contributes the pedagogical flowchart. Objective: to design a learning hyper-environment that contributes to the development of the student's independent work, with the histological contents of the teaching-learning process of the subject Cell, Tissues, Integumentary System, of the Medicine degree, at the Matanzas University of Medical Sciences of Matanzas. Materials and methods: the materialist dialectics of the Marxist-Leninist philosophy was used as the guiding method. Theoretical methods: historical-logical, analytical-documentary, inductive-deductive, systemic structural functional, modeling. Empirical methods: students survey, teachers interview, observation of classes, selection of experts. The population consisted of 10 teachers of the subject and a sample of 250 students. The work carried out covered two stages and three phases: diagnosis, design and evaluation of the results. Results: regarding design requirements, the best evaluated dimension was usability (4.98). In terms of cognitive skills, the development of navigation skills indicator in the search for information stands out with good results, and a value of 9.30. Conclusions: the designed learning hyper-environment is feasible, shows ease of use and functionality by responding to the needs of students in the subject; it adapts to the possibilities of the student.

Pressupostos epistemológicos das cidades amigas das pessoas idosas: revisão de escopo / Presupuestos epistemológicos de las ciudades amigables con las personas mayores: revisión de alcance / Epistemological assumptions of age-friendly cities: a scoping review

Resumo Objetivo Identificar os conceitos e perspectivas teóricas que fundamentam os estudos sobre Cidade Amiga da Pessoa Idosa. Métodos Revisão de escopo utilizando seis bancos de dados para identificar estudos publicados em revistas indexadas entre 2007 e 2021 usando as palavras-chave 'age-friendly' OR 'age friendly' OR 'cidade amiga'. Resultados Foram encontrados 2.975 estudos que após aplicação de critérios de exclusão resultaram em 227. Observou-se ampla variação no conceito do termo, porém muitos autores o fizeram replicando a OMS, sendo que em 59,5% dos estudos não houve menção de nenhuma perspectiva teórica. A teoria ecológica foi o referencial mais frequente (26%), sendo o termo usado como um equivalente a envelhecimento ativo. Autores de quatro países respondem pela maioria dos artigos (61%). Conclusão É necessário articular o conceito de Cidade Amiga da Pessoa Idosa com uma abordagem teórica e cultural para compreender mais profundamente as perspectivas do urbano e do social sob a lógica do envelhecimento populacional principalmente para a América Latina. A análise teórica nestes estudos e na gerontologia favorecerão discussões mais críticas sobre o envelhecimento, o idadismo e a crescente desigualdade social em curso.

Resumen Objetivo Identificar los conceptos y perspectivas teóricas que fundamentan los estudios sobre Cuidades Amigables con las Personas Mayores. Métodos Revisión de alcance utilizando seis bancos de datos para identificar estudios publicados en revistas indexadas entre 2007 y 2021, con las palabras clave 'age-friendly' OR 'age friendly' OR 'ciudad amigable'. Resultados Se encontraron 2975 estudios que, luego de aplicar los criterios de exclusión, quedaron 227. Se observó una amplia variación del concepto del término, aunque muchos autores replicaron a la OMS. En el 59,5 % de los estudios no se mencionó ninguna perspectiva teórica. La teoría ecológica fue la referencia más frecuente (26 %), y el término se usó como un equivalente al envejecimiento activo. La mayoría de los artículos (61 %) son de autores de cuatro países. Conclusión Es necesario unir el concepto de Cuidades Amigables con las Personas Mayores con un enfoque teórico y cultural para comprender más profundamente las perspectivas de lo urbano y lo social de acuerdo con la lógica del envejecimiento poblacional, principalmente en América Latina. El análisis teórico en estos estudios y en la gerontología permitirán discusiones más críticas sobre el envejecimiento, el edadismo y la creciente desigualdad social en curso.

Abstract Objective To identify the concepts and theoretical perspectives that underlie studies on age-friendly city. Methods This is a scoping review using six databases to identify studies published in indexed journals between 2007 and 2021 using the keywords 'age-friendly' OR 'age friendly' OR 'cidade amiga'. Results A total of 2,975 studies were found, which, after applying the exclusion criteria, resulted in 227. There was wide variation in the concept of the term, but many authors did so by replicating the WHO, and in 59.5% of studies there was no mention of any theoretical perspective. The ecological theory was the most frequent reference (26%), the term being used as an equivalent to active aging. Authors from four countries account for most articles (61%). Conclusion It is necessary to articulate the concept of age-friendly city with a theoretical and cultural approach to understand more deeply the urban and social perspectives under the logic of population aging, mainly for Latin America. Theoretical analysis in these studies and in gerontology will favor more critical discussions about aging, ageism and the growing social inequality in progress.

Comparison of the effect of two disinfectants on the independent waterway disinfection of a periodontal ultrasonic scaler / 口腔疾病防治

Objective @#To compare the disinfection effect of 3% (v/v) hydrogen peroxide and 500 mg/L chlorine-containing disinfectants in the independent waterway of a periodontal ultrasonic scaler to provide a reference for clinical waterway disinfection management in stomatology departments.@*Methods @#The 18 ultrasonic scalers were randomly divided into 3 groups of 6 units: the control group, experimental group 1 (3% hydrogen peroxide disinfectant group), and experimental group 2 (500 mg/L chlorine-containing disinfectant group). The replaceable parts of the independent waterway pipes of the 3 groups of ultrasonic scalers were replaced, and the water supply was supplied with sterile distilled water (DW). In the control group, special treatment was not applied to the nonreplaceable pipe part. In experimental group 1, the 3% hydrogen peroxide was used to disinfect nonreplaceable pipelines. In experimental group 2, the nonreplaceable part was disinfected with the 500 mg/L chlorine-containing disinfectant. The water sample was taken from the outlet of the scaler working part in the three groups for monitoring before disinfection, immediately after disinfection and 10 consecutive days after disinfection. Bacteria in the water samples were cultured for the colony counts. Then, the bacterial culture data were compared between groups. The qualified criterion of the water sample was that the number of bacterial colonies was less than or equal to 100 CFU/mL. After disinfection, a bacterial species mass spectrometry identification analysis was carried out when the number of bacterial colonies in each group exceeded the standard for the first time. Biofilms from the inner wall of the tube in the three groups were observed under an electron microscope on the 10th day after disinfection.@*Results @#There were no significant differences between the three groups before disinfection (F = 2.549, P = 0.111). The number of bacterial colonies in the spout of 6 scalers in the control group all exceeded the standard, and three kinds of bacteria were cultured: Sphingomonas melonis, Herbaspirillum huttiense, and Ralstonia pickettii. Compared with those in the control group, the number of bacterial colonies in experimental group 1 decreased significantly for 1-2 days after disinfection (P<0.05) and reached the standard. On the 3rd day after disinfection, the number of bacterial colonies of group 1 increased rapidly and exceeded the standard, and three kinds of bacteria were cultured: Sphingomonas, Herbaspirillum huttiense, and Ralstonia pickettii. For experimental group 2, the number of bacterial colonies decreased significantly compared to the control group on Days 1 to 6 after disinfection, but the number of bacterial colonies increased slightly from the 7th day after disinfection and exceeded the standard. Two kinds of bacteria were cultured: Herbaspirillum huttiense and Ralstonia pickettii. The average number of bacterial colonies 10-day after disinfection in experimental group 2 was lower than that in experimental group 1(P<0.001). Under an electron microscope, the biofilm thickness of the two experimental groups was significantly lower than that of the control group. @* Conclusion @# There is water pollution in the independent waterway of a periodontal ultrasound scaler. Three percent hydrogen peroxide and 500 mg/L chlorine disinfectant both have effective disinfection effects on the outlet water of scalers, and the effect of 500 mg/L chlorine disinfectant is better than that of 3% hydrogen peroxide. The use of 3% hydrogen peroxide to disinfect periodontal ultrasound scaler-independent waterways is recommended for disinfection every other day, and disinfection once a week is recommended for the use of 500 mg/L chlorine disinfectant.

Comparison of coagulation function between adrenocorticotropic hormone independent Cushing syndrome and nonfunctional adrenal adenoma and its influence factors / 北京大学学报(医学版)

OBJECTIVE@#To investigate the coagulation function indicators and identify influence factors of hypercoagulability in patients with adrenocorticotropic hormone (ACTH) independent Cushing syndrome (CS).@*METHODS@#In our retrospective study, the electronic medical records system of Peking University First Hospital was searched for the patients diagnosed with ACTH independent CS on discharge from January 2014 to June 2019. Nonfunctional adrenal adenoma patients were chosen as control group and matched 1 ∶1 by body mass index (BMI), gender, and discharge date. Clinical features and coagulation function indicators were compared between the two groups.@*RESULTS@#In the study, 171 patients were included in each group. Compared with control group, activated partial thromboplastin time (APTT), and prothrombin time (PT) in ACTH independent CS group were significantly lower [(29.22±3.39) s vs. (31.86±3.63) s, P < 0.001; (29.22±3.39) s vs. (31.86±3.63) s, P < 0.001], and both D-dimer and fibrin degradation products (FDP) levels were significantly higher (P < 0.05). Percentage of APTT levels under the lower limit of reference range in the CS patients was significantly higher than that in nonfunctional group (21.6% vs. 3.5%, P < 0.001). Percentage of D-dimer levels over the upper limit of reference range in the CS patients was significantly higher than that in nonfunctional group (13.5% vs. 6.6%, P=0.041). There were three patients with deep venous thrombosis and one patient with pulmonary embolism in CS group, however none was in control group. The area under curve (AUC) of serum cortisol rhythm (8:00, 16:00 and 24:00) levels was negatively associated with the levels of PT (r=-0.315, P < 0.001) and APTT (r=-0.410, P < 0.001), and positively associated with FDP (r=0.303, P < 0.001) and D-dimer levels (r=0.258, P < 0.001). There were no differences in coagulation function indicators among different histopathologic subgroups (adrenocortical adenoma, adrenocortical hyperplasia, oncocytic adenoma, adrenocortical carcinoma). With Logistic regression analysis, the AUC of cortisol and glycosylated hemoglobin A1c (HbA1c) levels were independent risk factors for hypercoagulability in the ACTH independent CS patients (P < 0.05).@*CONCLUSION@#ACTH independent CS patients were more likely in hypercoagulable state compared with nonfunctional adrenal adenoma, especially in ACTH independent CS patients with higher levels of cortisol AUC and HbA1c. These patients should be paid attention to for the hypercoagulability and thrombosis risk.

Fetal electrocardiogram signal extraction and analysis method combining fast independent component analysis algorithm and convolutional neural network / 生物医学工程学杂志

Fetal electrocardiogram (ECG) signals provide important clinical information for early diagnosis and intervention of fetal abnormalities. In this paper, we propose a new method for fetal ECG signal extraction and analysis. Firstly, an improved fast independent component analysis method and singular value decomposition algorithm are combined to extract high-quality fetal ECG signals and solve the waveform missing problem. Secondly, a novel convolutional neural network model is applied to identify the QRS complex waves of fetal ECG signals and effectively solve the waveform overlap problem. Finally, high quality extraction of fetal ECG signals and intelligent recognition of fetal QRS complex waves are achieved. The method proposed in this paper was validated with the data from the PhysioNet computing in cardiology challenge 2013 database of the Complex Physiological Signals Research Resource Network. The results show that the average sensitivity and positive prediction values of the extraction algorithm are 98.21% and 99.52%, respectively, and the average sensitivity and positive prediction values of the QRS complex waves recognition algorithm are 94.14% and 95.80%, respectively, which are better than those of other research results. In conclusion, the algorithm and model proposed in this paper have some practical significance and may provide a theoretical basis for clinical medical decision making in the future.

The correlation between brain functional network connectivity and inflammatory cytokines in patients with bipolar disorder II depressive episodes / 中华行为医学与脑科学杂志

Objective:To investigate the functional connectivity of default mode network (DMN) and limbic system, the expression level of inflammatory cytokine and their correlation in bipolar disorder type Ⅱ(BDⅡ) patients with depressive episodes.Methods:Thirty-three BD Ⅱ patients with depressive episodes and forty-six healthy controls were recruited to complete the resting-state functional magnetic resonance imaging (rs-fMRI). After image preprocessing, the DMN and limbic system were extracted from the image data by independent component analysis (ICA), so as to compare the differences of functional connectivity of resting brain network between the patients and the controls.Serum levels of inflammatory cytokines interleukin-6 (IL-6), interleukin-8(IL-8), interleukin-10(IL-10), tumor necrosis factor-α (TNF-α), and C-C motif chemokine ligand 4 (CCL4) in patients and healthy controls were detected.The correlation between functional connectivity of different brain regions and inflammatory cytokines was analyzed.SPSS 17.0 software was used for data statistical analysis.The two samples were compared using t-test or Mann-Whitney U-test, and Spearman was used for correlation testing. Results:In BDⅡ patients, the functional connectivity of the right medial prefrontal cortex(cluster-size=7 voxel, cluster-level PGRF<0.05, MNI: x=6, y=54, z=9, t=-3.765) and the left superior frontal gyrus(cluster-size=10 voxel, cluster-level PGRF<0.05, MNI: x=-21, y=54, z=15, t=-4.139) in DMN decreased, while the left cerebellum Ⅳ and Ⅴ lobules of limbic system (cluster-size=21 voxel, cluster-level PGRF<0.05, MNI: x=-15, y=-24, z=-30, t=4.468) and cerebellar tonsil of left cerebellum posterior lobe(cluster-size=8 voxel, cluster-level PGRF<0.05, MNI: x=-15, y=-51, z=-45, t=4.138) in the limbic system increased.Compared with the healthy controls, the serum levels of IL-10(7.39 (6.33, 9.32) pg/mL vs 6.54 (5.84, 7.39) pg/mL, Z=-2.937, P=0.003)and CCL4 (39.31 (25.77, 68.70) pg/mL vs 31.30 (20.32, 40.89) pg/mL, Z=-2.209, P=0.027) were higher in BDⅡ patients.The functional connectivity of the left cerebellum Ⅳ and Ⅴ lobules was positively correlated with the serum levels of IL-10 ( r=0.432, P=0.031) and that of the cerebellar tonsil of left cerebellum posterior lobe was positively correlated with the serum levels of IL-10 ( r=0.429, P=0.032) and CCL4 ( r=0.402, P=0.046). Conclusion:The functional connectivity of DMN and limbic system in BDⅡ patients with depressive episode is abnormal in resting-state fMRI.The expression level of inflammatory cytokines in patients' serum increases, and has correlation with the functional connection of limbic system.

Design and application of flipped classroom combined with micro-lectures in the teaching of pediatric infectious diseases / 中华医学教育探索杂志

Objective:To investigate the application effect of flipped classroom combined with micro-lectures in the teaching of pediatric infectious diseases.Methods:A total of 199 five-year students in the class of 2019 from Department of Pediatrics of Chongqing Medical University were divided into 14 groups. Each group selected a micro-lecture theme targeting the key and difficult points of the course and produced an original micro-lecture video through flipped classroom, which was then uploaded to Chaoxing platform for evaluation by teachers and students. At the end of the course, a questionnaire survey was performed to investigate the teaching effect, and final examination score and department examination score during internship were compared between the students in the class of 2019 and those in the class of 2018. SPSS 22.0 was used to perform the t-test, the Wilcoxon rank-sum test, the chi-square test, and the Fisher's exact test. Results:A total of 14 flipped micro-lecture works were completed by the students. The questionnaire survey showed that 98.47% (193/196) of the students thought that this model was helpful to master the key and difficult points; 93.88% (184/196) of the students thought that the flipped micro-lecture works had better originality and quality than reading reports and literature reviews in the past; 94.90% (186/196) of the students were more willing to accept the mode of flipped classroom combined with micro-lectures. Compared with the students in the class of 2018, the students in the class of 2019 had significantly higher final examination score (79.32±7.53 vs. 76.06±12.01, P<0.001), theoretical score of department examination (88.68±4.87 vs. 87.15±4.09, P<0.001), and operation score of department examination (84.93±7.56 vs. 82.08±9.10, P<0.001). Conclusion:Flipped classroom combined with micro-lectures can effectively solve the key and difficult points in the teaching of pediatric infectious diseases, and it can also stimulate the interest in independent learning and help to improve learning performance among students. Therefore, it holds promise for clinical application.

The significance and strategy of cultivating medical students' independent learning ability / 中华医学教育探索杂志

It's the duty of contemporary teachers to cultivate students' independent learning, independent thinking, and self-management ability. This paper reviews the significance of independent learning for cultivating medical students with forward-looking learning ability and cutting-edge medical knowledge. It focuses on the strategies and ideas of cultivating medical students' independent learning ability from the aspects of strategy and evaluation, and tries to provide inspiration and reference for the application of independent learning teaching method in the cultivation of medical students.

The current status and reflection of higher education research of independent medical universities: taking G University as an example / 中华医学教育探索杂志

Taking G University as an example, through empirical research, this study finds out that the motivation of teachers on medical education research is insufficient; the support and incentive for young and middle-aged teachers to participate in higher education research is insufficient; and universities lack of an efficient higher education research organization system; the social influence of medical research and education is not enough, etc. We call on independent medical universities to further improve the higher education research organization system, change the current situation and increase the support and incentives for young and middle-aged teachers to participate in higher education research, guide teachers to summarize the characteristics of medical education teaching, improve the quality of medical personnel training, and expand the influence of medical education research.

Host cell protein quantification workflow using optimized standards combined with data-independent acquisition mass spectrometry / 药物分析学报

Monitoring of host cell proteins(HCPs)during the manufacturing of monoclonal antibodies(mAb)has become a critical requirement to provide effective and safe drug products.Enzyme-linked immunosor-bent assays are still the gold standard methods for the quantification of protein impurities.However,this technique has several limitations and does,among others,not enable the precise identification of pro-teins.In this context,mass spectrometry(MS)became an alternative and orthogonal method that de-livers qualitative and quantitative information on all identified HCPs.However,in order to be routinely implemented in biopharmaceutical companies,liquid chromatography-MS based methods still need to be standardized to provide highest sensitivity and robust and accurate quantification.Here,we present a promising MS-based analytical workflow coupling the use of an innovative quantification standard,the HCP Profiler solution,with a spectral library-based data-independent acquisition(DIA)method and strict data validation criteria.The performances of the HCP Profiler solution were compared to more con-ventional standard protein spikes and the DIA approach was benchmarked against a classical data-dependent acquisition on a series of samples produced at various stages of the manufacturing process.While we also explored spectral library-free DIA interpretation,the spectral library-based approach still showed highest accuracy and reproducibility(coefficients of variation＜10％)with a sensitivity down to the sub-ng/mg mAb level.Thus,this workflow is today mature to be used as a robust and straightforward method to support mAb manufacturing process developments and drug products quality control.

METTL14 is a chromatin regulator independent of its RNA N6-methyladenosine methyltransferase activity

METTL3 and METTL14 are two components that form the core heterodimer of the main RNA m6A methyltransferase complex (MTC) that installs m6A. Surprisingly, depletion of METTL3 or METTL14 displayed distinct effects on stemness maintenance of mouse embryonic stem cell (mESC). While comparable global hypo-methylation in RNA m6A was observed in Mettl3 or Mettl14 knockout mESCs, respectively. Mettl14 knockout led to a globally decreased nascent RNA synthesis, whereas Mettl3 depletion resulted in transcription upregulation, suggesting that METTL14 might possess an m6A-independent role in gene regulation. We found that METTL14 colocalizes with the repressive H3K27me3 modification. Mechanistically, METTL14, but not METTL3, binds H3K27me3 and recruits KDM6B to induce H3K27me3 demethylation independent of METTL3. Depletion of METTL14 thus led to a global increase in H3K27me3 level along with a global gene suppression. The effects of METTL14 on regulation of H3K27me3 is essential for the transition from self-renewal to differentiation of mESCs. This work reveals a regulatory mechanism on heterochromatin by METTL14 in a manner distinct from METTL3 and independently of m6A, and critically impacts transcriptional regulation, stemness maintenance, and differentiation of mESCs.

Advances of peptide-centric data-independent acquisition analysis algorithms and software tools / 生物工程学报

Data-independent acquisition (DIA) is a high-throughput, unbiased mass spectrometry data acquisition method which has good quantitative reproducibility and is friendly to low-abundance proteins. It becomes the preferred choice for clinical proteomic studies especially for large cohort studies in recent years. The mass-spectrometry (MS)/MS spectra generated by DIA is usually heavily mixed with fragment ion information of multiple peptides, which makes the protein identification and quantification more difficult. Currently, DIA data analysis methods fall into two main categories, namely peptide-centric and spectrum-centric. The peptide-centric strategy is more sensitive for identification and more accurate for quantification. Thus, it has become the mainstream strategy for DIA data analysis, which includes four key steps: building a spectral library, extracting ion chromatogram, feature scoring and statistical quality control. This work reviews the peptide-centric DIA data analysis procedure, introduces the corresponding algorithms and software tools, and summarizes the improvements for the existing algorithms. Finally, the future development directions are discussed.

Risk factors of urinary tract infection after renal transplantation / 现代泌尿外科杂志

【Objective】 To investigate the independent risk factors of urinary tract infection (UTI) in recipients under-going renal transplantation of donation after brain death (DBD), so as to provide a theoretical basis for the prevention and control of postoperative UTI. 【Methods】 A retrospective study was conducted for recipients who received renal transplantation of DBD in our hospital during Jan.2021 and Dec.2021. The recipients were divided into the infection group (n=26) and non-infection group (n=74) according to the incidence of UTI 3 months after operation. The risk factors of UTI were identified with univariate and multivariate analyses. 【Results】 The incidence of UTI was 26%. Univariate analysis showed that gender, postoperative urinary fistula, time of indwelling catheter and time of indwelling double J tube were the influencing factors of UTI (P<0.05). Forward stepwise regression analysis showed time of indwelling double J tube (OR=1.086,95%CI:1.003-1.177,P=0.042) and time of indwelling catheter(OR=4.687,95%CI:2.064-10.645, P<0.010) were the independent risk factors of UTI (P<0.05). 【Conclusion】 The time of indwelling catheter and time of indwelling double J tube are the independent factors of UTI after renal transplantation of DBD.

Focus of Ethical Review on the Research of New Generation Artificial Intelligence Independent Software Based on Deep Learning Algorithm / 中国医学伦理学

By sorting out the research of new generation of artificial intelligence (AI) independent software reviewed by medical ethic committee of a grade A tertiary hospital in Beijing from January 2017 to November 2021, this paper analyzed and summarized the common problems involved in multiple dimensions, such as the integrity of the protocol design, protection of the rights and interests of the subjects, the data using and storing, and proposed that ethic committee should pay special attention to the protocol integrity, data security, risk assessment, track review, and other aspects different from conventional clinical research, thus providing a idea for ethical review of new generation AI independent software research.

AIFM1 variants associated with auditory neuropathy spectrum disorder cause apoptosis due to impaired apoptosis-inducing factor dimerization / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

Auditory neuropathy spectrum disorder (ANSD) represents a variety of sensorineural deafness conditions characterized by abnormal inner hair cells and/or auditory nerve function, but with the preservation of outer hair cell function. ANSD represents up to 15% of individuals with hearing impairments. Through mutation screening, bioinformatic analysis and expression studies, we have previously identified several apoptosis-inducing factor (AIF) mitochondria-associated 1 (AIFM1) variants in ANSD families and in some other sporadic cases. Here, to elucidate the pathogenic mechanisms underlying each AIFM1 variant, we generated AIF-null cells using the clustered regularly interspersed short palindromic repeats (CRISPR)/CRISPR-associated protein 9 (Cas9) system and constructed AIF-wild type (WT) and AIF-mutant (mut) (p.‍T260A, p.‍R422W, and p.‍R451Q) stable transfection cell lines. We then analyzed AIF structure, coenzyme-binding affinity, apoptosis, and other aspects. Results revealed that these variants resulted in impaired dimerization, compromising AIF function. The reduction reaction of AIF variants had proceeded slower than that of AIF-WT. The average levels of AIF dimerization in AIF variant cells were only 34.5%‍‒‍49.7% of that of AIF-WT cells, resulting in caspase-independent apoptosis. The average percentage of apoptotic cells in the variants was 12.3%‍‒‍17.9%, which was significantly higher than that (6.9%‍‒‍7.4%) in controls. However, nicotinamide adenine dinucleotide (NADH) treatment promoted the reduction of apoptosis by rescuing AIF dimerization in AIF variant cells. Our findings show that the impairment of AIF dimerization by AIFM1 variants causes apoptosis contributing to ANSD, and introduce NADH as a potential drug for ANSD treatment. Our results help elucidate the mechanisms of ANSD and may lead to the provision of novel therapies.

A non-contact continuous blood pressure measurement method based on video stream / 生物医学工程学杂志

Hypertension is the primary disease that endangers human health. A convenient and accurate blood pressure measurement method can help to prevent the hypertension. This paper proposed a continuous blood pressure measurement method based on facial video signal. Firstly, color distortion filtering and independent component analysis were used to extract the video pulse wave of the region of interest in the facial video signal, and the multi-dimensional feature extraction of the pulse wave was preformed based on the time-frequency domain and physiological principles; Secondly, an integrated feature selection method was designed to extract the universal optimal feature subset; After that, we compared the single person blood pressure measurement models established by Elman neural network based on particle swarm optimization, support vector machine (SVM) and deep belief network; Finally, we used SVM algorithm to build a general blood pressure prediction model, which was compared and evaluated with the real blood pressure value. The experimental results showed that the blood pressure measurement results based on facial video were in good agreement with the standard blood pressure values. Comparing the estimated blood pressure from the video with standard blood pressure value, the mean absolute error (MAE) of systolic blood pressure was 4.9 mm Hg with a standard deviation (STD) of 5.9 mm Hg, and the MAE of diastolic blood pressure was 4.6 mm Hg with a STD of 5.0 mm Hg, which met the AAMI standards. The non-contact blood pressure measurement method based on video stream proposed in this paper can be used for blood pressure measurement.

Management Practice of Outsourcing Hospital Tests to Independent Clinical Laboratories / 中国医疗器械杂志

With the development of medical technology and the deepening of medical reform, hospital laboratory test continues to expand. Affected by factors such as technology and cost, the business of outsourcing laboratory test to independent clinical laboratories develops rapidly. However, this cooperation mode has not been carried out for a long time and lacks systematic management experience. Through the analysis of the motivation of hospital delivery, this study expounds the classification, judgment basis and requirements for suppliers of third-party clinical laboratory delivery, as well as the operation practice of laboratory test delivery, so as to provide reference for more standardized and effective testing delivery for hospitals.