Objective To analyze the activity concentrations of gross α, gross β, and radionuclides in atmospheric fallout around Daya Bay Nuclear Power Plant from 2019 to 2022, and provide foundational scientific data for the healthy development of nuclear energy. Methods Five monitoring sites were set up at different distances (1.2, 6.9, 12.4, 42.3, and 69.2 km) from Daya Bay Nuclear Island 1. Stainless steel sampling barrels were used to collect atmospheric fallout, with a monitoring cycle of three months. The collected samples were ashed using radiochemical method. Subsequently, the gross α and gross β radioactivity were quantified using a low-background α/β measurement instrument. The remaining ash samples were mixed with water and left to equilibrate for over three weeks before γ-nuclide analysis using a low-background, high-purity germanium γ-spectrometer. Results The gross α activity concentration in atmospheric fallout around Daya Bay Nuclear Power Plant from 2019 to 2022 averaged (25.3 ± 10.6) Bq/m²/season and ranged from 5.8 to 73.4 Bq/m²/season. The gross α activity concentrations in sampling sites #1 to #5 were 5.8-34.4, 11.9-35.2, 14.4-46.4, 7.2-73.4, and 13.1-43.1 Bq/m²/season, respectively. The gross β activity concentration averaged (50.5 ± 23.4) Bq/m²/season and ranged from 13.9 to 139.3 Bq/m²/season. The gross β activity concentrations of sampling sites #1 to #5 were 17.1-107.4, 17.6-87.5, 25.8-102.0, 13.9-139.3, and 23.4-99.2 Bq/m²/season, resprctively. The activity concentrations of ²³⁸U, ²²⁶Ra, ²³²Th, ⁴⁰K, ²¹⁰Pb, and ⁷Be in atmospheric fallout were < lower limit of detection (LLD)-4.2, < LLD-5.8, < LLD-6.3, < LLD-42.1, < LLD-514.0, and 35.7-1761.0 Bq/m²/season, respectively. Gross α and gross β activity concentrations were significantly positively correlated with ²¹⁰Pb activity concentration (r=0.770, α < 0.001; r=0.882, α < 0.001, respectively). Gross β activity concentration showed a significant positive correlation with ⁷Be (r=0.833, α < 0.001). The activity concentrations of ⁵⁴Mn, ⁵⁷Co, ⁵⁸Co, ⁶⁰Co, ⁵⁹Fe, ⁹⁵Zr, ¹⁰³Ru, ¹⁰⁶Ru, ^110mAg, ¹³¹I, ¹³⁴Cs, ¹³⁷ Cs, ¹⁴⁰Ba and ¹⁹²Ir were lower than the LLD of the instrument, and no artificial radionuclides were detected. Conclusion The gross α and gross β radioactive activity concentrations in the atmospheric fallout in the surrounding area of Daya Bay Nuclear Power Plant during 2019-2022 were affected by natural radionuclides ²¹⁰Pb and ⁷Be, and were in the normal fluctuation ranges. No artificial radionuclides were found in the atmospheric fallout, and the Daya Bay Nuclear Power Plant was in a safe and stable state of operation.

Objective To investigate the current status of quality control of radiological diagnosis and treatment equipment in Shenzhen City, explore the problems in quality control testing of radiological diagnosis and treatment equipment, and provide control strategies. Methods According to the requirements of the Special Monitoring Work Plan for Radiation Health in Shenzhen, quality control tests were carried out on some radiological diagnosis and treatment equipment in Shenzhen according to the test items and methods of the currently valid national standards. Results From 2019 to 2023, a total of 72 medical institutions participated in radiological health monitoring program in Shenzhen, and 839 quality control tests were performed on radiological diagnosis and treatment equipment. The qualified rate was 91.8% in preliminary tests. The qualified rates of radiological diagnosis, radiotherapy, and nuclear medicine equipment were 91.9%, 96.3%, and 62.5%, respectively. The primary unqualified items were response uniformity, flatness of the X-ray irradiation field, and intrinsic spatial linearity. Conclusion The qualified rate in quality control of nuclear medical equipment is relatively low. Medical institutions should strengthen the routine maintenance of radiological diagnosis and treatment equipment. Radiological health technical service institutions should enhance the training of technical personnel to ensure the health and safety of patients and radiation workers.

Epilepsy is a disease of the central nervous system caused by excessive neuronal discharges in the brain,characterized by sudden,recurrent and self-limited onset. The brain's qi collateral and the brain neural network are highly correlated and internally consistent in terms of structure and function. The theory of "brain's qi collateral-abnormal collateral",which is centered on the structural disorder and dysfunction of brain's qi collateral leading to the poor circulation of brain's qi collateral,can comprehensively explain the related pathogenesis of epilepsy and the law of disease evolution,so it has important clinical value. Taking the pathogenic characteristics as an entry point and based on the theory of "brain's qi collateral-abnormal collateral",this paper argues that phlegm and qi stagnation,wind in the brain's qi collateral,and phlegm and blood stagnation damaging the brain's collaterals,as well as the structural and functional characteristics of brain's qi collateral that circulate bi-directionally are the key factors for epilepsy to present sudden,recurrent,and self-limited characteristics. According to the therapeutic principle of "Collaterals need to be unobstructed to function normally",it is proposed that the method of regulating the qi and collaterals should be used as the basic treatment principle throughout the treatment. In addition,the method of resolving phlegm and eliminating blood stasis is supplemented for different pathological changes,while combining the syndrome differentiation of zang-fu viscera and attaching importance to the accompanying symptoms of epileptic seizures,to regulate the brain's qi collateral to achieve the effects of wind quenching and epileptic arrest. This is to provide reference for the treatment of epilepsy in traditional Chinese medicine.

Chronic refractory wound (CRW) is one of the most challengeable issues in clinic due to complex pathogenesis, long course of disease and poor prognosis. Experts need to conduct systematic summary for the diagnosis and treatment of CRW due to complex pathogenesis and poor prognosis, and standard guidelines for the diagnosis and treatment of CRW should be created. The Guideline forthe diagnosis and treatment of chronic refractory wounds in orthopedic trauma patients ( version 2023) was created by the expert group organized by the Chinese Association of Orthopedic Surgeons, Chinese Orthopedic Association, Chinese Society of Traumatology, and Trauma Orthopedics and Multiple Traumatology Group of Emergency Resuscitation Committee of Chinese Medical Doctor Association after the clinical problems were chosen based on demand-driven principles and principles of evidence-based medicine. The guideline systematically elaborated CRW from aspects of the epidemiology, diagnosis, treatment, postoperative management, complication prevention and comorbidity management, and rehabilitation and health education, and 9 recommendations were finally proposed to provide a reliable clinical reference for the diagnosis and treatment of CRW.

BACKGROUND: Dysfunction of the gap junction channel protein connexin 43 (Cx43) contributes to myocardial ischemia/reperfusion (I/R)-induced ventricular arrhythmias. Cx43 can be regulated by small ubiquitin-like modifier (SUMO) modification. Protein inhibitor of activated STAT Y (PIASy) is an E3 SUMO ligase for its target proteins. However, whether Cx43 is a target protein of PIASy and whether Cx43 SUMOylation plays a role in I/R-induced arrhythmias are largely unknown. METHODS: Male Sprague-Dawley rats were infected with PIASy short hairpin ribonucleic acid (shRNA) using recombinant adeno-associated virus subtype 9 (rAAV9). Two weeks later, the rats were subjected to 45 min of left coronary artery occlusion followed by 2 h reperfusion. Electrocardiogram was recorded to assess arrhythmias. Rat ventricular tissues were collected for molecular biological measurements. RESULTS: Following 45 min of ischemia, QRS duration and QTc intervals statistically significantly increased, but these values decreased after transfecting PIASy shRNA. PIASy downregulation ameliorated ventricular arrhythmias induced by myocardial I/R, as evidenced by the decreased incidence of ventricular tachycardia and ventricular fibrillation, and reduced arrythmia score. In addition, myocardial I/R statistically significantly induced PIASy expression and Cx43 SUMOylation, accompanied by reduced Cx43 phosphorylation and plakophilin 2 (PKP2) expression. Moreover, PIASy downregulation remarkably reduced Cx43 SUMOylation, accompanied by increased Cx43 phosphorylation and PKP2 expression after I/R. CONCLUSION PIASy downregulation inhibited Cx43 SUMOylation and increased PKP2 expression, thereby improving ventricular arrhythmias in ischemic/reperfused rats heart.
Rats ; Male ; Animals ; Myocardial Reperfusion Injury/metabolism* ; Connexin 43/genetics* ; Sumoylation ; Down-Regulation ; Rats, Sprague-Dawley ; Arrhythmias, Cardiac/drug therapy* ; Myocardial Ischemia/metabolism* ; RNA, Small Interfering/metabolism*

Objective:To study the correlation between peripheral blood eosinophils levels and clinical characteristics of patients with acute exacerbation of chronic obstructive pulmonary disease (AECOPD).Methods:A retrospective study was conducted in 79 AECOPD patients admitted to the Department of Respiratory and Critical Care Medicine of Peking University Third Hospital from January 2015 to December 2016. Peripheral blood EOS level 100/μl, 300/μl, 2%, 3%, and sputum EOS level 3% were the cut-off values. Patients were divided into EOS≥100/μl group ( n=33), EOS<100/μl group ( n=46); EOS≥300/μl group ( n=10), EOS<300/μl group ( n=69); EOS%≥2% group ( n=27), EOS<2% group ( n=52); blood EOS≥3% group ( n=16), blood EOS<3% group ( n=63); sputum EOS≥3% group ( n=7), sputum EOS<3% group ( n=15) respectively. The study analyzed the differences of clinical features between each two groups of patients; According to the blood EOS level in the acute phase and the recovery phase, ≥100/μl was high and<100/μl was low, they were divided into high EOS in both acute and recovery phase group ( n=21), high EOS in the acute phase and low EOS in the recovery phase group ( n=4), low EOS in the acute phase and high EOS in the recovery phase group ( n=20) and low EOS in both acute and recovery phase group ( n=12). The differences of clinical characteristics in each group were analyzed. Results:The median duration of COPD, proportion of patients with forced expiratory volume in the first second (FEV 1) percentage of predicted value (FEV 1% predicted value)<50%, proportion of complicated with respiratory failure, median level of procalcitonin, proportion of systemic glucocorticoid therapy and median length of stay in the EOS≥100/μl group were all significantly lower than EOS<100/μl group (5 vs 13 years, 48.0% vs 81.8%, 21.9% vs 50.0%, 0.04 vs 0.09 μg/L, 21.2% vs 56.5%, 11 vs 14 d, all P<0.05). The proportion of re-acute exacerbation in the EOS≥300/μl group was significantly higher than EOS<300/μl group (60.0% vs 23.2%), while the median fibrinogen level and median procalcitonin level were significantly lower than EOS<300/μl group (3.38 vs 3.85 g/L, 0.03 vs 0.07 μg/L, all P<0.05). The median duration of COPD, proportion of FEV 1% predicted value<50%, proportion of complicated with respiratory failure, the modified British Medical Research Council′s dyspnea scale (mMRC) score, median fibrinogen level, median C-reactive protein level, median procalcitonin level, proportion of systemic glucocorticoid therapy, proportion of non-invasive ventilation during hospitalization and median length of stay in the EOS≥2% group were all significantly lower than EOS<2% group [5 vs 13 years, 40.9% vs 83.3%, 12.0% vs 51.0%, 3 (2, 3) vs 3 (3, 4) points, 3.37 vs 3.97 g/L, 3.6 vs 16.8 mg/L, 0.04 vs 0.09 μg/L, 14.8% vs 55.8%, 0 vs 19.2%, 9 vs 14 d] (all P<0.05). The median duration of COPD, proportion of complicated with respiratory failure, median level of C-reactive protein and proportion of systemic glucocorticoid therapy in the blood EOS≥3% group were significantly lower than blood EOS<3% group (5 vs 10 years, 6.7% vs 45.8%, 4.4 vs 12.9 mg/L, 12.5% vs 49.2%) (all P<0.05). The median duration of COPD and median length of stay in the sputum EOS≥3% group were significantly shorter than sputum EOS<3% group (2 vs 15 years, 10 vs 21 d), while the median blood EOS count and median blood EOS ratio were significantly higher than sputum EOS<3% group (0.20 vs 0.01×10 9/L, 2.4% vs 0.1%) (all P<0.05). The proportion of complicated with respiratory failure and received systemic glucocorticoid therapy in the high EOS in both acute and recovery phase group were significantly lower than the low EOS in the acute phase and high EOS in the recovery phase group (14.3% vs 75.0%, 14.3% vs 55.0%) (all P<0.05). The proportion of FEV 1% predicted value <50% in the high EOS in the acute phase and low EOS in the recovery phase group was significantly lower than the low EOS in the acute phase and high EOS in the recovery phase group (0 vs 82.4%) ( P<0.05). The median FEV1% predicted value level in the high EOS in the acute phase and low EOS in the recovery phase group was significantly higher than the low EOS in both acute and recovery phase group (59.5% vs 36.0%) ( P<0.05). Conclusions:High EOS AECOPD patients have a shorter duration of disease and fewer days of hospitalization. The proportion of patients complicated with respiratory failure is lower. It is easier to distinguish the differences in clinical characteristics of AECOPD patients with a blood EOS count of 100/μl as a cut-off value. EOS levels in the acute phase and the recovery phase are helpful to distinguish the clinical characteristics of AECOPD patients.

Objective:To explore the effect of nursing interventions based on individual and family self-management theory (IFSMT) on postoperative rehabilitation of patients undergoing percutaneous transforaminal endoscopic surgery.Methods:A total of 835 patients who underwent percutaneous transforaminal endoscopic surgery in Shanxi Provincial People's Hospital from January 2018 to January 2020 were selected as research objects by the convenient sampling method. According to the random envelope method, patients were divided into the control group ( n=417) and the observation group ( n=418) according to the approximate 1∶1 standard. The control group was given routine nursing intervention, while the observation group was given nursing intervention based on IFSMT on the basis of the control group. The differences in self-management ability, postoperative recovery time, lumbar functional recovery, pain score and postoperative complication rate before and after intervention were compared between the two groups. Results:After intervention, the scores of treatment management, psychological management, life management and knowledge and skill management in the observation group were higher than those before intervention and were higher than those in the control group, and the differences were statistically significant ( P<0.01). The hospitalization days, self-care time and work recovery time of observation group were shorter than those of control group, and the differences were statistically significant ( P<0.01). After intervention, the Oswestry dysfunction index and pain score in the observation group were lower than those before intervention and lower than those in the control group. The treatment score evaluated by the Japanese Orthopedic Association was higher than that before intervention and higher than that of the control group, and the differences were statistically significant ( P<0.01). The incidence of postoperative complications in observation group was lower than that in control group, and the difference was statistically significant ( P<0.05) . Conclusions:IFSMT based nursing intervention for patients undergoing percutaneous foraminal endoscopic surgery is beneficial to postoperative rehabilitation of patients, which is worthy of clinical promotion.

OBJECTIVE：To study the current situation of pharmacovigilance work in large ，medium and small-scale pharmaceutical manufacturers in Jiangsu Province ，and to provide reference for the pharmacovigilance development of drug manufacturers with different scales. METHODS ：The situation of pharmacovigilance work in 108 manufacturers in Jiangsu province was investigated through a questionnaire survey and related websites. The pharmacovigilance work （organization，personnel and training，document，computer system ），drug safety monitoring （case report ，regular safety update report ，post-marketing safety research） and drug risk management （signal management ， risk management plan ， risk control measures ， drug safety communication）of different manufacturers were investigated to put forward the suggestions. RESULTS & CONCLUSIONS ：There was no significant difference in the organizational structure （independently established specialized agencies ）among manufacturers of different scales （P＝0.60）. Most of the manufacturers had less than 50％ of the proportion in the independent establishment of specialized institutions for pharmacovigilance. There was significant difference in personnel and training （situation and number of full-time staff in charge ，medical and clinical pharmacy personnel number ），document（formulating training management system ， entrusted management and key monitoring procedures ），computer system （P＜0.05）. There was no difference in the main collection ways of case reports among manufacturers of different scales ；however，the number of independent reports in 2019（P＜ 0.01），the proportion of quality control process for regular safety update reports （P＝0.01），and the proportion of carrying out post-marketing safety research in recent five years （P＜0.01）in large-scale manufacturers were all significantly higher than small- and medium-scale manufacturers. The proportions of large-scale manufacturers （70.00％） and medium-scale manufacturers （84.38％），which considered “lack of technical guidelines ”as an important factor affecting signal management ，were higher than that of small-scale manufacturers （53.57％）（P＝0.01）；the proportions of large-scale manufacturers （60.00％）and medium-scale manufacturers（50.00％），which had carried out risk management plans in the past five years ，were higher than that of small-scale manufacturers（30.36％）（P＝0.04）；the proportion of large-scale manufacturers （50.00％），which adopted the measures in recent 5 year，was higher than medium-scale manufacturers （37.50％）and small-scale manufacturers （25.00％）；the proportions of large-scale manufacturers （70.00％ ） and medium-scale manufacturers （59.38％ ）， which carried out communication for pharmacists，were higher than small-scale manufacturers （32.14％）（P＜0.01）. Large-scale manufacturers outperformed small- and medium-scale manufacturers in terms of pharmacovigilance system ，drug safety monitoring and drug risk management. Large-scale manufacturers had a certain degree of lack of initiative on performing risk management plans ，medium-scale manufacturers on full-time staffs in charge ，and small-scale manufacturers on pharmacovigilance system. So ，it is recommended that large-scale manufacturers take effective control of variety risk as the goal and actively risk management ；medium-scale manufacturers should continuously enhance the awareness of responsibility and improve the investment of resources on pharmacovigilance work ； small-scale manufacturers should pay more attention to improving the pharmacovigilance system and the compliance of specific work.

BACKGROUND AND OBJECTIVES: The International Society for Cellular Therapy (ISCT) proposed a set of minimal markers for identifying human mesenchymal stromal cells (hMSCs) in 2007. Since then, with the growing interest of better characterising hMSCs, various additional surface markers have been proposed. However, the impact of how culture conditions, in particular, the culture surface, vary the expression of hMSC markers was overlooked. METHODS AND RESULTS: In this study, we utilized the RNA sequencing data on hMSCs cultured on different surfaces to investigate the variation of the proposed hMSC biomarkers. One of the three ISCT proposed positive biomarker, CD90 was found to be significantly down regulated on hMSCs culture on fibrous surfaces when compared to flat surfaces. The detected gene expression values for 177 hMSCs biomarkers compiled from the literature are reported here. Correlation and cluster analysis revealed the existence of different biomarker communities that displayed a similar expression profile. We found a list of hMSCs biomarkers which are the least sensitive to a change in surface properties and another list of biomarkers which are found to have high sensitivity to a change in surface properties. CONCLUSIONS: This study demonstrated that substrate properties have paramount effect on altering the expressions of hMSCs biomarkers and the proposed list of substrate-stable and substrate-sensitive biomarkers would better assist in the population characterisation. However, proteomic level analysis would be essential to confirm the observations noted.
Biomarkers ; Chemistry ; Gene Expression ; Humans ; Mesenchymal Stromal Cells ; Quality Control ; Regenerative Medicine ; Sequence Analysis, RNA ; Surface Properties ; Transcriptome

Objective:To compare the cognitive functions in patients with depressive disorder,hyperlipidemia disorder,and comorbid both of the disorders.Methods:A cross-sectional study was performed in age,gender and education year matched patients with depressive disorder (n =51)(according to the ICD-10),hypedipidemia(n =38) (according to the Chinese adult lipid guideline),comorbid both of the disorders(n =40) and normal controls (n =56) were recruited in this study.All subjects received a battery of neuropsychological tests to access the anxiety and depression symptoms and cognitive function.Results:The scores of MoCA were lower in the patients with comorbid both disorders and patients with depression than patients with hypedipidemia [(24 ± 3),(24 ± 4)vs.(26 ± 3),Ps ＜0.05],and were lower in patients with depression than in normal controls(25 ±3),P ＜0.05.Stroop color test amends numbers were higher in patients with comorbid disorder than in the other three groups (Ps ＜0.05).The scores of immediate and delayed logical memory were higher in patients with hyperlipidemia than in other three groups (Ps ＜0.05).The total number of words in verbal fluency test were lower in patients with comorbid disorders and patients with depression than in patients with hyperlipidemia (Ps ＜0.05).Wisconsin card sorting test category completes were lower in patients with comorbid disorders and patients with depression than in patients with hyperlipidemia and normal controls (Ps ＜ 0.05).The scores of persistent errors were higher in patients with comorbid disorders and patients with depression than in patients with hyperlipidemia and normal controls (Ps ＜0.05).Conclusion:In this study,patients with depressive disorder have impairment of cognitive function,while hyperlipidemia may probably do not impair cognitive function.