Factores determinantes del éxito en la carrera de enfermeras actuantes en tecnología de reproducción asistida / Factors that affect career success of nurses who practice in assisted reproductive technology / Fatores que afetam o sucesso profissional de enfermeiros que atuam na área de tecnologia de reprodução assistida

Objetivo: examinar la relación entre éxito en la carrera y ambiente de trabajo con enfermeras actuantes en tecnología de reproducción asistida (TRA), e identificar factores que afectan su éxito en la carrera. Método: estudio transversal realizado en 53 centros de fertilidad de 26 provincias en la China Continental. Datos recolectados utilizando cuestionario de datos demográficos, un Cuestionario de Competencias de TRA para Enfermeras Especializadas, la Career-Success Scale (Escala de éxito profesional) y la Nursing Work Environment Scale (Escala del entorno de trabajo de enfermería). Se aplicó estadística inferencial y descriptiva. Resultados: 597 enfermeras actuantes en TRA participaron en nuestra encuesta, entregando 555 cuestionarios válidos. Los puntajes generales promedio de éxito en la carrera y ambiente de trabajo fueron 3,75 (desviación estándar, [DE]=1,01) y 3,42 (DE=0,77) respectivamente. Se observó fuerte correlación positiva entre éxito en la carrera y ambiente de trabajo (r=0,742; p<0,01). La regresión múltiple mostró que la concurrencia a conferencias académicas, atención psicológica, desarrollo profesional, apoyo y cuidado, salario y bienestar constituyeron factores significantes con influencia en el éxito en la carrera. Conclusión: la concurrencia a conferencias académicas, atención psicológica y ambiente de trabajo guardan relación positiva con el éxito en la carrera. Los gestores deberían considerar formas de abordar tales factores.

Objective: to examine the relationship between career success and work environment of nurses who practice in assisted reproductive technology and to identify factors that affect career success. Method: a cross-sectional study conducted in 53 fertility centres in 26 provinces in mainland China. Data were collected using a demographic data questionnaire, a specialised nursing competence questionnaire, the Career-Success Scale, and the Nursing Work Environment Scale. Descriptive and inferential statistics were applied. Results: 597 assisted reproductive technology nurses participated in our survey, and 555 valid questionnaires were collected. Theoverall mean scores for career success and work environment were 3.75 [standard deviation (SD) = 1.01] and 3.42 (SD = 0.77) respectively. There was a strong positive correlation between career success and work environment (r = 0.742, p < 0.01). Multiple regression showed that attending academic conferences, psychological care, professional development, support and care, salary, and welfare were significant factors that influence career success. Conclusion: attending academic conferences, psychological care, and work environment are positively related to career success. Administrators should consider ways to address these factors.

Objetivo: examinar a relação entre o sucesso profissional e o ambiente de trabalho de enfermeiros da área de tecnologia de reprodução assistida e identificar os fatores que afetaram tal sucesso. Método: estudo transversal conduzido em 53 centros de fertilidade em 26 províncias da China Continental. Os dados foram coletados por meio de um questionário demográfico, um questionário sobre competências de enfermagem especializada em tecnologias de reprodução assistida, da Career-Success Scale (Escala de Sucesso Profissional) e da Nursing Work Environment Scale (Escala do Ambiente de Trabalho na Enfermagem). Aplicaram-se análises de estatística descritiva e inferencial. Resultados: participaram do estudo 597 enfermeiros da área de tecnologia de reprodução assistida, e 555 questionários válidos foram coletados. As pontuações globais médias para o sucesso profissional e o ambiente de trabalho foram 3,75 [desvio padrão (DP) = 1,01] e 3,42 (DP = 0,77), respectivamente. Verificou-se forte correlação positiva entre o sucesso profissional e o ambiente de trabalho (r = 0,742; p < 0,01). A análise de regressão múltipla mostrou que a participação em eventos acadêmicos, a assistência psicológica, o desenvolvimento profissional, o apoio e os cuidados, e o salário e o bem-estar foram fatores que influenciaram significativamente o sucesso profissional. Conclusão: a participação em eventos acadêmicos, a assistência psicológica e o ambiente de trabalho mostraram correlação positiva com o sucesso profissional. Os gestores deveriam considerar formas de abordar esses fatores.

The influence of the extent of lymph node metastasis on the prognosis for patients with intrahepatic cholangiocarcinoma

Purpose@#Reports showed that some of intrahepatic cholangiocarcinoma (ICC) patients with lymph node metastasis (LNM) may also gain survival benefit undergone resection. However, the effect of the extent of LNM on prognosis and surgical indication is barely discussed. @*Methods@#From September 1994 to November 2018, primary ICC patients undergone initial curable surgery were enrolled. Based on the extent of LNM, we divided these patients into 4 groups, including patients with no LNM (group N0), LNM to hepatoduodenal ligament or common hepatic artery (region A, group A), LNM to gastrohepatic lymph nodes for left liver ICC and periduodenal and peripancreatic lymph node for right liver ICC (region B, group B), or LNM beyond these regions (region C, group C). Multivariable Cox regression analysis was performed to identify the prognostic factors for recurrencefree survival (RFS) and overall survival (OS) in all groups. @*Results@#A total of 133 patients were enrolled. There were 56, 21, 17, and 39 patients in groups N0, A, B, and C, respectively. There was significant difference between groups N0 and C in RFS (P < 0.001) and OS (P = 0.002). When we compared group N0 + A + B with group C, we also found that RFS (P < 0.001) and OS (P = 0.007) were significantly different. In multivariable analysis, the extent of LNM was an independent risk factor for RFS (P < 0.050). @*Conclusion@#ICC patients with the LNM to regions A and B could still achieve good prognosis with resection. Surgery should be carefully considered when LNM to region C.

Inspiration of different medical examination forms of Medical University of Vienna in Austria to medical education in china / 中华医学教育探索杂志

Medical students need to have different levels of ability, so various examination forms are required to measure on levels of competency. The choice of different examination methods is very important to reflect the learning effect of the selected courses. The present work describes the examination design and its functions of the Medical University of Vienna, and the enlightenment to the evaluation of higher medical education of China. Learning from the advanced teaching evaluation concepts and methods in Austria may help to promote the reform of medical education evaluation methods and cultivate high-quality medical talents in our country.

Effect of acupotomy on the fat infiltration degree of lumbar multifidus muscle in patients with lumbar disc herniation after percutaneous transforaminal endoscopic discectomy / 中国针灸

OBJECTIVE@#To observe the effect of acupotomy on the fat infiltration degree of lumbar multifidus muscle (LMM) in patients with lumbar disc herniation after percutaneous transforaminal endoscopic discectomy (PTED).@*METHODS@#A total of 104 patients with lumbar disc herniation treated with PTED were randomly divided into an observation group (52 cases, 3 cases dropped off) and a control group (52 cases, 4 cases dropped off). Patients of both groups received rehabilitation training of two weeks 48 h after PTED treatment. The observation group was treated with acupotomy (L3-L5 Jiaji [EX-B 2]) once within 24 h after PTED. In the two groups, the fat infiltration cross sectional area (CSA) of LMM was compared before and 6 months after PTED, the visual analogue scale (VAS) score and Oswestry disability index (ODI) score were observed before and 1, 6 months after PTED. The correlation between fat infiltration CSA of LMM in each segment and VAS score was analyzed.@*RESULTS@#Six months after PTED, the fat infiltration CSA of LMM in L4/L5 and the total L3-S1 segments of the observation group was lower than that before PTED (P<0.05), and the fat infiltration CSA of LMM in L4/L5 of the observation group was lower than the control group (P<0.01). One month after PTED, the ODI and VAS scores of the two groups were lower than those before PTED (P<0.01), and those in the observation group were lower than the control group (P<0.05). Six months after PTED, the ODI and VAS scores of the two groups were lower than those before PTED and 1 month after PTED (P<0.01), and those in the observation group were lower than the control group (P<0.01). There was a positive correlation between the fat infiltration CSA of LMM in the total L3-S1 segments and VAS scores in the two groups before PTED (r = 0.64, P<0.01). Six months after PTED, there was no correlation between the fat infiltration CSA of LMM in each segment and VAS scores in the two groups (P>0.05).@*CONCLUSION@#Acupotomy can improve the fat infiltration degree of LMM, pain symptoms and activities of daily living in patients with lumbar disc herniation after PTED.

Measurement of the Thermic Effect of Food in a Chinese Mixed Diet in Young People / 生物医学与环境科学（英文）

OBJECTIVE@#To determine the thermic effect of food (TEF) in a Chinese mixed diet in young people.@*METHODS@#During the study, the participants were weighed and examined for body composition every morning. The total energy expenditure (TEE) of the participants was measured by the doubly labeled water method for 7 days, and during this period, basal energy expenditure was measured by indirect calorimetry and physical activity energy expenditure was measured by an accelerometer. The value obtained by subtracting basal energy expenditure and physical activity energy expenditure from TEE was used to calculate TEF.@*RESULTS@#Twenty healthy young students (18-30 years; 10 male) participated in the study. The energy intake of the participants was not significantly different from the Chinese Dietary Reference Intake of energy ( P > 0.05). The percentage of energy from protein, fat and carbohydrate were all in the normal range. The intakes of fruits, milk and dietary fiber of the participants were significantly lower than those in the Chinese Dietary Guidelines ( P < 0.05). There was no significant difference in the body weight of the participants during the experiment ( P > 0.05). When adjusted for body weight, there was no significant difference in either TEE or basal energy expenditure between the male and female participants ( P > 0.05). In addition, there was no significant difference in physical activity energy expenditure and TEF between the male and female participants ( P > 0.05). The percentage of TEF in TEE was 8.73%.@*CONCLUSION@#The percentage of TEF in TEE in a Chinese mixed diet in young people was significantly lower than 10% ( P < 0.001). A value of 10% is usually considered to be the TEF in mixed diets as a percentage of TEE.

Endoplasmic reticulum stressed promotes colorectal cancer cell proliferation and invasion through ATG5-mediated autophagy pathway / 中华内分泌外科杂志

Objective:To explore the effect of endoplasmic reticulum stressed (ER) on colorectal cancer (CRC) cell proliferation and invasion via ATG5-mediated autophagy pathway and the underlying mechanism.Methods:We performed bioinformatics analysis to identify the expression level of PERK, ATF6 and ATG5 in CRC tissues and adjacent tissues and the correlation between PERK and ATG5 expression in CRC tissues.The expression level of PERK in CRC cell lines was examined by qRT-PCR assay. Cell proliferation was quantified by CCK-8.The invasion of the cells was detected by Transwell.Western blot assay was performed to verify the levels of protein. The levels of autophagy were examined by electron microscopy.Results:PERK and ATF6 expression in CRC tissues was higher than that in the adjacent tissues and PERK expression was higher in CRC cells than intestinal mucosal cells. Expression level of PERK in CRC cell lines HCT116,SW480,HT29,LoVo and colonic mucosa cell lines FHC was 1.51±0.04,3.12±0.05,2.19±0.04,2.38±0.06 and 0.98±0.04 ( P<0.001) .The increased expression of PERK promoted CRC cell proliferation and invasion. PERK expression levels was positively associated with ATG5 expression levels ( r=0.52, P<0.001) and overexpression of PERK accelerated the protein expression of ATG5 (1.00±0.04,3.53±0.07, t=74.61, P<0.001) . ATG5 was highly expressed in CRC tissues. Overexpression of ATG5 could promote proliferation,invasion and accelerate autophagy of CRC cells (the number of autophagosomes in the blank control group,the negative control group and ATG5-Overexpression group was 4.33±1.53, 4.00±1.00, 9.67±2.52, and t=3.14,3.62, P=0.035,0.022, respectively) .ATG5 promoted colorectal cancer cell proliferation and invasion through autophagy pathway. Conclusion:ER stressed-CRC cells could promote CRC cell proliferation and invasion through ATG5-mediated autophagy pathway.

Practice and reflection on the curriculum construction of basic medical sciences—Taking the medical microbiology as an example / 中华医学教育探索杂志

Medical microbiology is one of the compulsory courses of basic medical sciences, which lays an important theoretical foundation for the follow-up study of infectious diseases, contagions, tumors, and so on. The course of medical microbiology in our college adhered to the concept of student-centered, diversified teaching, scientific evaluation, and continuous improvement. Teaching design was a cross-link of general theories, specific chapters, clinical cases, theory and practice, and the ideological and political education throughout the curriculum. Lectures adopted the mode of offline teaching (such as flipped classroom, case analysis, and comprehensive experimental design), online assistance (such as classroom test, stage test, extracurricular homework, and questionnaire survey), and combined process evaluation. This teaching mode also reflected the deep integration of information technology and classroom teaching. With the development and construction in these years, medical microbiology has completed the renewal of curriculum resources, the construction of online question bank, the construction and design of ideological and political case bank, and process evaluation (10 points of usual score + 10 points of case study + 10 points of experimental performance + 100 points of final examination multiplied by 70%). There was no significant difference in the results of qustionnaire survey in terms of the improvement of independent learning ability, curriculum evaluation system and satisfaction feedback. Students in Batch 2019 were most satisfied with the teaching of keeping pace with the times and the guidance of positive outlook on life and values.

Prognostic factors affecting the success of conversion chemotherapy in patients with unresectable liver metastases from initially colorectal cancer / 中华胃肠外科杂志

Objective: To investigate the factors affecting the success of conversion therapy in patients with initially unresectable colorectal cancer liver metastases (CRLM) in order to provide evidence-based medical evidence for formulating individualized treatment strategies for patients. Methods: A retrospective case-control study was used in this study. Clinical data of 232 patients with initially unresectable CRLM receiving first-line systemic treatment in Sun Yat-sen University Cancer Center from January 2013 to January 2020 were collected, including 98 patients of successful conversion and 134 patients of failed conversion as control. Conversion therapy scheme: 38 patients received FOLFOXIRI regimen chemotherapy (irinotecan, oxaliplatin, calcium folinate and fluorouracil), 152 patients received FOLFOX regimen (oxaliplatin, calcium folinate and fluorouracil), 19 patients received FOLRIRI regimen (irinotecan, calcium folinate and fluorouracil), 23 patients received systemic chemotherapy combined with fluorouridine hepatic artery infusion chemotherapy; 168 patients received targeted therapy, including 68 of bevacizumab and 100 of cetuximab. Logistics analysis was used to compare the factors affecting the success of conversion therapy. The Kaplan-Meier method was used to calculate progression-free survival (PFS), and the Log-rank test was used for survival comparison. Results: Among 232 patients, 98 patients had successful conversions and 134 patients had failed conversions with a successful conversion rate of 42.2%, meanwhile 30 patients underwent simple hepatectomy and 68 underwent hepatectomy combined with intraoperative radiofrequency ablation. After first-line chemotherapy, 111 patients (47.8%) were partial remission, 57 patients (24.6%) were stable disease, and 64 patients (27.6%) were progression disease. During the median follow-up of 18.8 (1.0-87.9) months, 148 patients were dead or with tumor progression. The median PFS time of patients with successful conversion was longer than that of patients with failed conversion (31.0 months vs. 9.9 months, P<0.001). Univariate analysis found that the bilobar distribution of liver tumors (P=0.003), elevated baseline carcinoembryonic antigen (CEA) levels (P=0.024), tumor invasion of the portal vein (P=0.001), number of metastatic tumor>8 (P<0.001), non-FOLFOXIRI (P=0.005), and no targeted therapy (P=0.038) were high risk factors for the failed conversion therapy. The results of multivariate logistics analysis indicated that the number of metastatic tumor >8 (OR=2.422, 95%CI: 1.291-4.544, P=0.006), portal vein invasion (OR=2.727, 95%CI: 1.237-4.170, P=0.008) were the independent risk factors for failed conversion therapy, while FOLFOXIRI regimen (OR=0.300, 95%CI: 0.135-0.666, P=0.003) and targeted drugs (OR=0.411, 95%CI: 0.209-0.809, P=0.010) were independent protective factors for successful conversion therapy. Conclusions: The number of metastatic tumor and portal vein invasion are key factors that affect the outcomes of conversion therapy for initially unresectable CRLM. If a patient can tolerate chemotherapy, a combination program of three-drug and targeted therapy is preferred for the active conversion therapy.

Progress in diagnosis and treatment of gastroparesis after colon cancer surgery / 中华胃肠外科杂志

At present, comprehensive treatment dominated by surgical procedures is an important measure for colon cancer to obtain the chance of cure. Surgical intervention, while removing the tumor, carries the risk of postoperative gastroparesis (PG) . Because of the low incidence rate and insignificant early clinical symptoms, early stage PG is often overlooked clinically. However, PG can increase the risk of malnutrition, delay postoperative antitumor treatment, and increase the risk of tumor recurrence and metastasis. This review focuses on the mechanisms, clinical risk factors, preventive measures, and advances in treatment of PG due to colon cancer. Aim to increase the clinician's adequate attention to PG in colon cancer and from a surgical point to reduce the risk of gastroparesis in colon cancer by optimizing the surgical strategy.

Activation-induced markers for evaluation of specific CD4 + T cell immune response in HIV-1-infected patients / 中华微生物学和免疫学杂志

Objective:To establish a method using activation-induced markers (AIM) to detect the function of HIV-1-specific CD4 + T cell subsets for evaluating the immune response of HIV-1-specific CD4 + T cells more effectively. Methods:Twelve chronically HIV-1-infected patients without antiviral therapy and six healthy people without HIV-1 infection were enrolled in this study. The function of HIV-1-specific T lymphocytes was detected by AIM and ICS based on polychromatic flow cytometry. The performance of the two methods in assessing HIV-1-specific CD4 + T cell immune response in HIV-1-infected patients was evaluated. Results:The positive rates of HIV-1-specific PD-1 + CD25 + CD4 + T, CD69 + CD200 + CD4 + T, CD69 + ICOS + CD4 + T, CD69 + ICOS + CD8 + T、CD137 + CD69 + CD8 + T、PD-1 + CD25 + CD8 + T and OX40 + PD-1 + CD8 + T cells in all of the HIV-1 patients were 11/12, 8/12, 7/12, 8/12, 8/12, 7/12 and 7/12 using AIM method. ICS results showed that the positive rates of HIV-1-specific IL-2 + CD4 + T, IFN-γ + CD4 + T, TNF-α + CD4 + T, IFN-γ + CD8 + T, TNF-α + CD8 + T and IL-2 + CD8 + T cells were 2/12, 2/12, 0, 12/12, 10/12 and 5/12, respectively. Conclusions:AIM method was more sensitive in antigen-specific CD4 + T cell detection, and could be used as a complementary method to ICS in assessing antigen-specific T cell response.

Reconstruction of teaching mode of Human Parasitology among rural order-oriented medical students in the context of curriculum ideology and politics / 中国血吸虫病防治杂志

To set the cultivation goal with adaptation to rural order-oriented medical students, the teaching mode of Human Parasitology was reformed in the context of curriculum ideological and political education. The new teaching mode not only enables students to harvest medical knowledge during the school education stage, but also plays a guiding role in cultivation of humanistic qualities and professional spirit, which provides a basis for cultivating general practitioners serving for grassroots healthcare.

Full spectrum analysis of chemical constituents of Sargassum fusiforme and its in vitro anti-neuroinflammatory activity / 中国药房

OBJECTIVE To study the composition of chemical constituents of Sargassum fusiforme and its in vitro anti- neuroinflammatory activity ，and to provide reference for its development and utilization and the study of pharmacodynamic substances. METHODS UHPLC-QTOF-MS/MS analysis method and GC-MS/MS method were used to analyze the chemical constituents of S. fusiforme . The lipopolysaccharide （1 μg/mL）was adopted to establish the inflammatory model of neuromicroglia BV2. Using paroxetine （5 μg/mL）as positive control ，CCK-8 assay was used to detect the effects of the extracts of S. fusiforme （20，40，60，80，100 μg/mL）on the activity and morphology of neuromicroglia BV 2. The effects of the extracts of S. fusiforme （40，60，80 μg/mL）on the contents of tumor necrosis factor α（TNF-α）and interleukin- 6（IL-6）in cell supernatant were detected by ELISA. RESULTS A total of 103 non-volatile constituents were identified by UHPLC-QTOF-MS/MS ，and 60 volatile constituents were obtained by GC-MS/MS. The extracts of S. fusiforme （40，60，80 μ g/mL） could significantly reduce the abnormally increased activation of neuromicroglia BV 2 and the contents of TNF-α and IL-6 due to lipopolysaccharide （P＜0.05 or P＜0.01）. CONCLUSIONS The study establish the full spectrum of chemical constituents of S. fusiforme ，and it is confirmed that fusiforme has certain in vitro anti-neuroinflammatory activity.

Study on critical quality attributes of Qingjin Huatan Decoction based on serum pharmacochemistry / 中国中药杂志

Qingjin Huatan Decoction is a classic prescription with the effects of clearing heat, moistening lung, resolving phlegm, and relieving cough. In order to explore the critical quality attributes of Qingjin Huatan Decoction, we identified the blood components of Qingjin Huatan Decoction by ultra-performance liquid chromatography quadrupole time of flight mass spectrometry(UPLC-Q-TOF-MS) under the following conditions, chromatographic column: Acquity UPLC BEH C_(18) column(2.1 mm×100 mm, 1.7 μm); mobile phase: 0.1% formic acid acetonitrile(A)-0.1% formic acid in water(B); gradient elution; flow rate: 0.2 mL·min~(-1); column temperature: 30 ℃; injection volume: 5 μL. The electrospray ionization(ESI) source was used to collect data in both positive and negative ion modes under the following conditions, capillary voltage: 3 kV for the positive ion mode and 2 kV for the negative ion mode; ion source temperature: 110 ℃; cone voltage: 30 V; cone gas flow rate: 50 L·h~(-1); nitrogen degassing temperature: 350 ℃; degassing volume flow rate: 800 L·h~(-1); scanning range: m/z 50-2 000. In this experiment, a total of 66 related components of Qingjin Huatan Decoction were identified, including 22 prototype components and 44 metabolites. The results of this study preliminarily revealed the pharmacodynamic material basis of Qingjin Huatan Decoction in vivo, which has provided an experimental basis for the determination of quality markers of Qingjin Huatan Decoction and the development of new drugs.

Circular RNA circ0025847 supresses colorectal cancer proliferation by promoting of RNA-binding protein QK1 expression / 中华内分泌外科杂志

Objective:To uncover the effect of circ0025847 on the proliferation of colorectal cancer cells and its molecular mechanisms.Methods:qRT-PCR was utilized to analyze the expression of circ0025847 and QK1 in human colorectal cancer cells (HCT116, SW480) and normal mucosa cells (NCM460) .CCK-8 was used to analyze the effect of circ0025847 and QK1 on proliferation in colorectal cancer cells. Bioinformatics method was used to screen RBP which could bind to circ0025847. RNA pulldown and RIP was utilized to confirm whether QK1 binds to circ0025847.Effects of circ0025847 over-expression on QK1 expression was analyzed by Western blot.NC group, circ0025847 overexpression group and circ0025847 overexpression+ QK1 inhibitor group were established and the proliferation effect was determined by CCK8.Results:circ0025847 (the expression levels in NCM460, HCT116 and SW480 cells were 1.01±0.05, 0.49±0.08, 0.45±0.10) and QK1 (the expression levels in NCM460, HCT116 and SW480 cells were 0.98±0.07, 0.50±0.07, 0.47±0.09) expression was significantly downregulated in colorectal cancer cells. Overpression of circ0025847 and QK1 suppressed colorectal cancer cells growth.RNA pull-down and RIP clarified that circ0025847 bind to QK1 and circ0025847 positively regulate QK1 expression (7 199.20±12.44 VS 3 889.80±11.03) . circ0025847 inhibiting the proliferation of colorectal cancer cells by promoting the expression of QK1 was confirmed by rescue experiment.Conclusion:circ0025847 inhibits colorectal cancer cells proliferation via positively regulating QK1 expression, indicating that circ0025847 may be potential therapeutic target of colorectal cancer.

Lung adenocarcinoma misdiagnosed as IgG4-related lung disease:A case report and literature review / 中南大学学报(医学版)

IgG4-related disease (IgG4-RD) is a recently recognized disorder characterized by elevated serum IgG4 levels and infiltration of IgG4 positive blood cells in the affected organs. However, other conditions like malignancy as well as connective tissue diseases, may show similar findings. A 56-year-old male patient visited Second Xiangya Hospital, Central South University for recurrent fever and chest pain for more than 1 month. Preliminary tests diagnosed as IgG4-related lung disease (IgG4-RLD). However, the improvement of symptoms was absent after the treatment with methylprednisolone. The patient underwent the second biopsy and the result eventually demonstrated lung adenocarcinoma. The role of IgG4 in the pathogenesis or prognosis for lung adenocarcinoma remains unclear. Therefore, a thorough evaluation of symptoms, test of specific serum markers and eventually pathological confirmation are required to avoid misdiagnosis.

Cloning and expression analysis of RcUDPGTs genes in Tibetan Rhodiola crenulata / 药学学报

UDP glucosyltransferase (UDPGT) catalyzes the synthesis of secondary metabolites and plant hormones to regulate plant growth and development, pathogen defense and environmental adaptability. In this study 18 members of the RcUDPGT gene family were cloned from Tibetan Rhodiola crenulata and analyzed using bioinformatics. The tissue-specific expression, abiotic stresses and plant hormones (abscisic acid, auxin, methyl jasmonate) induced expression patterns were identified by real-time quantitative PCR. The bait vector of RcUDPGT (JX228125.1) was constructed to select interacting proteins from an Arabidopsis yeast library. The results of the bioinformatics analysis revealed that RcUDPGT nucleotide sequences were about 1 400 bp and encoded 452-498 amino acids. In the primary protein sequences, C-terminal sequences were more conserved compared with N-terminal regions, which held a PSPG (plant secondary product glycosyltransferase) domain. In the tertiary structures, RcUDPGTs contained a UDP sugar donor recognition binding site. In addition, all genes had multiple phosphorylation sites. The results of qRT-PCR showed that RcUDPGTs genes were expressed in root, stem and leaf. The expression levels were regulated by low temperature/ultraviolet light and various plant hormones (ABA, IAA, MeJA), but the expression patterns were quite different among them. For example, RcUDPGT6, RcUDPGT11, and RcUDPGT17 had the highest expression in leaves and were induced by all three hormones, suggesting that the functions of these genes might be to respond to environmental changes. RcUDPGT9, RcUDPGT10, RcUDPGT14 were most abundantly expressed in roots and were significantly induced by ABA and MeJA hormones, indicating that these genes may be involved in the synthesis and accumulation of salidroside. Yeast two-hybrid results showed that RcUDPGT did not exhibit autoactivation and cell toxicity, and two significant interactional genes were identified, AtKCR1 (AT1G67730.1) and AtSNL4 (AT1G70060). The AtKCR1 gene encodes a β-ketoacyl reductase (KCR) involved in synthesis of very long chain fatty acids. The AtSNL4 gene encodes a homolog of the transcriptional repressor SIN3, which could participate in the ABA hormone signaling pathway and enhance the transcriptional repression of AP2/EREBP class factors in Arabidopsis. These results suggest that the accumulation of the secondary metabolite salidroside in Rhodiola crenulata might be affected by several regulatory mechanisms. The above results may lay the foundation for understanding the adaptive mechanism of Rhodiola crenulata in a high altitude environment and stimulate an in-depth study of the synthesis and accumulation of secondary metabolites in this species.

Molecular markers for immunological evaluation and monitoring of patients with idiopathic pulmonary fibrosis / 中国医师杂志

Idiopathic pulmonary fibrosis (IPF) is a common pulmonary interstitial disease with unknown etiology. Its pathogenesis is unknown and there is no specific drug. Its progress is urgent and its prognosis is heterogeneous. Many studies have found that abnormal immune system function of the body and lungs may be related to the pathogenesis, progression and prognosis of IPF. Combined with the literature, this paper comprehensively analyzes the distribution of IPF related immune cells, cytokines and immunoglobulins in peripheral blood and bronchoalveolar lavage fluid of IPF patients, and discusses the research potential and clinical application potential value of these cells and molecular markers as immune evaluation and monitoring for IPF diagnosis, condition evaluation and prognosis prediction.

A specific phenotype of interstitial lung disease—progressive pulmonary fibrosis / 中国医师杂志

The diagnosis and treatment of interstitial lung diseases (ILD) are difficult, due to the complicated classification and the unknown etiology. In the scope of ILD, in addition to idiopathic pulmonary fibrosis (IPF), there are some diseases still progressing after active treatment, the degree of fibrosis continues to aggravate, lung function continues to deteriorate and the early mortality rate rises. Their prognosis are similar to IPF. We collectively refer to these diseases with similar progression as progressive fibrosing interstitial lung disease (PF-ILD). PF-ILD is a new concept which was put forward in recent years. However, there is no clear consensus to guide the diagnosis and treatment of such diseases. This review comprehensively elaborates the definition, epidemiology, diagnosis, treatment, prognosis and future research directions of PF-ILD, which will help us better understand and manage PF-ILD in the future.

Research progress in the application of impulse oscillometry and fractional exhaled nitric oxide in idiopathic pulmonary fibrosis / 中国医师杂志

Impulse oscillometry (IOS) and exhaled nitric oxide fraction determination (FeNO) are two detection methods to evaluate lung function, which can provide important functional information not captured in standardized lung function tests. These two methods may be promising disease assessment and detection tools for idiopathic pulmonary fibrosis (IPF). Therefore, it is necessary to standardize IOS and FeNO methods. This paper reviews the research progress of IOS and FeNO in IPF, and discusses the limitations of these two detection methods and their application value in IPF.

Clinical characteristics of 14 patients with chronic eosinophilic pneumonia / 中国医师杂志

Objective:To summarize the clinical characteristics of patients with chronic eosinophilic pneumonia (CEP), so as to provide reference for clinicians and improve the level of diagnosis and treatment.Methods:14 patients who met the diagnostic criteria of CEP in Xiangya Second Hospital of Central South University from January 2012 to July 2021 were analyzed retrospectively. Their clinical manifestations, laboratory examination, imaging characteristics, diagnosis and treatment were analyzed.Results:The male to female ratio of 14 patients with CEP was 6∶1, with a median age of 51 years. 3 patients had allergic rhinitis, sinusitis, rash and other allergic history. The course of the disease was about 4 months. The common symptoms included cough (14 cases), expectoration (13 cases), shortness of breath (10 cases), and occasional extrathoracic symptoms such as rash and lymphadenopathy (2 cases). Eight patients had abnormal pulmonary auscultation, mainly coarse respiratory sounds of both lungs and scattered dry and wet rales. The eosinophil count (EOS) in peripheral blood was increased in all patients, and the median EOS count was about 1.42×10 9/L. Total serum IgE increased in 11 patients, of which 10 cases were more than 1 000 ng/ml. Pulmonary function tests were performed in 11 patients, including 5 cases of normal pulmonary function, 3 cases of obstructive ventilation dysfunction and 3 cases of restrictive ventilation dysfunction. All 14 patients underwent lung computer tomography (CT) examination. Most of them (13 cases) were double lung infiltration. The pathological signs were mainly patch shadow (6 cases), ground glass shadow (4 cases), grid shadow (3 cases) and consolidation shadow (3 cases), and scattered nodule shadow (3 cases) was seen in some cases; Mediastinal or hilar lymphadenopathy occurred in 6 patients. 9 patients underwent bronchoscopic alveolar lavage (BAL) and cell classification and counting. Only 3 cases had EOS counts higher than the normal value (normal value<3%). 10 patients underwent bronchoscopic lung biopsy, and 6 patients had EOS infiltration in lung tissue. 9 patients were treated with glucocorticoids, 8 patients were treated with oral corticosteroids (OCS) (prednisone or methylprednisolone), and the initial dose was 30-50 mg; One case was treated with budesonide atomization alone; Five patients were not diagnosed with CEP, only used antibiotics or other symptomatic treatment, and did not use hormones. Conclusions:As a rare pulmonary disease, CEP has no specific clinical manifestations. The common symptoms are cough, expectoration, shortness of breath, etc, which is easily misdiagnosed. Laboratory tests often indicate increased peripheral blood EOS count and total IgE, and imaging usually shows diffuse infiltration in both lungs, with lymph node enlargement. OCS therapy is the first-line treatment for CEP. The short-term prognosis after OCS treatment is good, but it is prone to relapse. Some novel monoclonal antibody biologics can be used as alternative therapy.