Tilt and decentration of intraocular lens after four-point suspension fixation and their relationship with visual prognosis / 眼科新进展

Objective To compare and analyze the tilt and decentration of the intraocular lens in patients receiving four-point and two-point suspension fixation,as well as their relationship with visual prognosis.Methods A total of 80 patients(80 eyes)who underwent intraocular lens suspension fixation at the Ophthalmology Department of Baoding No.1 Central Hospital from June 2021 to April 2022 were selected as the subjects.These patients were randomly divided into the experimental group(41 patients,41 eyes,underwent four-point suspension fixation)and the control group(39 patients,39 eyes,underwent traditional two-point suspension fixation).They were followed up for at least 6 months after surgery to re-cord their uncorrected visual acuity(UCVA)and best corrected visual acuity(BCVA)before surgery and at the last follow-up.The tilt angle and decentration distance of the intraocular lens of patients in the two groups were measured after surger-y by a panoramic ultrasound biomicroscope.The preoperative and last follow-up UCVA and BCVA of patients in the two groups,as well as tilt angle and decentration distance of the intraocular lens after surgery,were compared,and the corre-lation between tilt angle,decentration distance and postoperative UCVA,BCVA was analyzed by Person correlation analy-sis.Results The UCVA and BCVA at the last follow-up in the experimental group and control group were better than those before surgery(all P＜0.05).The difference in postoperative UCVA between the experimental group and the control group was statistically significant(t=-6.20,P=0.00),and the experimental group had better postoperative UCVA than the control group.There was no statistically significant difference in postoperative BCVA between the experimental group and the control group(t=-1.43,P=0.16).The postoperative horizontal and vertical tilt angles of the intraocular lens in the experimental group were 0.70°±0.24° and 0.60°±0.16°,respectively;while those in the control group were 2.66°± 1.40° and 3.76°±0.67°,respectively.The differences between the two groups were statistically significant(t=-8.51 and-29.42,P=0.00 and 0.00).The postoperative horizontal and vertical decentration distances of the intraocular lens in the experimental group were(0.24±0.10)mm and(0.25±0.10)mm,respectively,while those in the control group were(0.85±0.77)mm and(2.14±0.50)mm,respectively.The differences between the two groups were statistically signifi-cant(t=-4.82 and-21.68,P=0.00 and 0.00).In the experimental group,neither the horizontal and vertical tilt angles of intraocular lenses nor the horizontal and vertical decentration distances were correlated with postoperative UCVA and BCVA(all P＞0.05).In the control group,the horizontal tilt angle of intraocular lenses was positively correlated with post-operative UCVA and BCVA(both P＜0.05),while the vertical tilt angle was not correlated with postoperative UCVA and BCVA(both P＞0.05);the horizontal decentration distance was positively correlated with postoperative UCVA and BCVA(both P＜0.05),but the vertical decentration distance was not correlated with postoperative UCVA and BCVA(both P＞0.05).Conclusion Both four-point suspension fixation and traditional two-point suspension fixation can effectively im-prove postoperative vision of patients,while the tilt and decentration of the intraocular lens are smaller after four-point sus-pension fixation.

Optimization of Preparation Technology of Xinqingduyin Granules Based on Characteristic Chromato-grams and Index Components / 中药新药与临床药理

Objective To establish high performance liquid chromatography(HPLC)characteristic chromatograms of Xinqingduyin Granules(composed of Taraxaci Herba,Lonicerae Japonicae Flos,Chrysanthemi Indici Flos,etc.)and content determination of chicory acid and glycyrrhizic acid,and to optimize the preparation process of Xinqingduyin Granules.Methods Using the characteristic chromatograms of Xinqingduyin and the retention rate of chicory acid and glycyrrhizic acid as indexes,we carried out orthogonal experiment to optimize the extraction process of Xinqingduyin,and studied the concentration process.The molding process of Xinqingduyin Granules was conducted by screening the types and dosage of auxiliary materials,then three batches of pilot experiments were carried out.Results HPLC characteristic chromatograms of Xinqingshuyin Granules and the determination methods of chicory acid and glycyrrhizic acid were established.The optimal preparation technology was as follows:8 times amount of water was added,the drug was decocted for 3 times,with 1 hour per time.After the extract was concentrated under reduced pressure at 80℃,the appropriate amount of steviol glycoside and lactose was added into the extract and mixed.One-step granulation and packaging were adopted.The retention rates of chicoric acid and glycyrrhizic acid in the 3 batches of Xinqingduyin Granules,which were prepared on the pilot scale,were(54.56±1.63)%and(54.96±1.08)%,and the rate of finished product was(87.47±0.49)%,respectively.The quality is uniform,and the characteristic map of Xinqingduyin Granules showed high similarity with that of decoction prepared from the same batch of slices.Conclusion The optimized preparation technology is reasonable,feasible and reproducible.This preparation can be used to obtain the granule with similar materials of Xinqingduyin decoction.

Simultaneous Determination of Artemisinin,Arteannuin B,Chrysosplenetin and Chrysosplenol-D in the Water Extract of Artemisia annua L.by HPLC / 中药新药与临床药理

Objective To establish a HPLC method for the simultaneous determination of artemisinin,arteannuin B,chrysosplenetin and chrysosplenol-D in the water extract of Artemisia annua L.Methods The analysis was performed on Agilent ZORBAX SB-C18(250 mm×4.6 mm,5 μm)column with a mobile phase of acetonitrile(A)-water(B)and the flow rate of 0.8 mL·min-1 in a gradient elution manner.The column temperature was 30℃.The injection volume was 10 μL,and the detection wavelength was 210 nm.Results Artemisinin,arteannuin B,chrysosplenetin and chrysosplenol-D were correlated well linearly with peak area in their respective ranges 1.608 8-16.088 μg(r=0.999 9),0.014 1-0.141 4 μg(r=1),0.185 1-1.850 9 μg(r=0.999 9),0.144 1-1.441 4 μg(r=0.999 9),the average recovery rate(n=6)were 102.44%,97.82%,95.07%,95.55%,and the RSD values were 1.12%,1.44%,1.29%,1.53%.Conclusion This method is convenient and accurate.It has good stability and repeatability,and can be used to simultaneously determine the content of artemisinin,arteannuin B,chrysosplenetin and chrysosplenol-D in the water extract of Artemisia annua L.

Risk factors of postoperative acute pain after thoracoscopic surgery for patients with early-stage lung adenocarcinoma / 中华胸心血管外科杂志

Objective:To improve the understanding of acute pain after thoracoscopic surgery in patients with early-stage lung adenocarcinoma, to analyze and screen out the independent risk factors that may induce acute postoperative pain. The patients' surgery experience may get improved through the corresponding timely and effective interventions.Methods:We retrospectively reviewed the clinical data of 204 patients with early-stage lung adenocarcinoma who were treated by a single medical team of our center from May 2021 to October 2021, and analyzed the assessment results of acute postoperative pain. Patients were grouped according to the general condition, past medical history, social and spiritual attributes, lesion characteristics, surgical approaches and anesthetic methods. Comparison of proportions of acute postoperative pain between the groups were made, and independent risk factors were identified.Results:A total of 84 males and 120 females were enrolled, with a mean age of(57.9±11.5)years old and a median operation time of 120(110, 145) min. No serious complication or perioperative death occurred in the whole group. Postoperative pain control failed in 76 cases(37.3%), 24 cases(11.8%) suffered from severe postoperative pain, and 33 cases(16.2%) required additional intramuscular injection of strong analgesics after surgery. Those who were younger than 60 years old, with a university degree or above, received two-incision surgery, operated for more than 2 h, received general anesthesia only, or in a state of depression, had significantly higher rates of postoperative acute pain, compared with their respective control groups( P<0.05). The independent risk factors for acute pain after thoracoscopic surgery included age( P=0.002), history of alcoholism( P=0.014), number of incisions( P=0.016), operation time( P=0.010), depression status( P=0.037) and enhanced anesthetic method( P=0.012). Conclusion:A large amount of patients with early-stage lung cancer suffered from acute pain after thoracoscopic surgery, which seriously affected their treatment experience and even quality of life. Young patients with a history of alcoholism and depression status were high-risk groups for postoperative acute pain. Applying Uniportal video-assisted thoracoscopic surgery, reducing the operation time as much as possible, and choosing enhanced analgesic anesthesia represented by epidural block combined with general anesthesia might be effective ways to reduce the probability of acute postoperative pain.

Surgical versus conservative treatment for acute type A aortic intramural hematoma: A retrospective cohort study / 中国胸心血管外科临床杂志

@#Objective    To compare the outcomes following emergency surgery or conservative treatment for patients with acute type A aortic intramural hematoma (IMH). Methods    Clinical data of consecutive patients diagnosed with acute type A aortic IMH in our hospital from September 2014 to December 2018 were retrospectively analyzed. The patients who met our surgical indications received surgery (an operation group) and other patients received strict conservative treatment (a conservative treatment group). Results    Finally 127 patients were enrolled, including 112 males and 15 females with an average age of 53.6±13.0 years. Of 127 patients, 85 (66.9%) patients accepted emergency surgery and 42 (33.1%) patients accepted strict conservative treatment. There was no difference between the two groups in early mortality or complications (P>0.05). The 5-year survival rate was 90.4% in the operation group and 74.3% in the conservative treatment group (P=0.010). A maximum aortic diameter in the ascending aorta and aortic arch≥45 mm and maximum thickness of IMH in the same section≥8 mm were risk factors for IMH-related death in patients undergoing conservative treatment (P<0.001). Conclusion    The mortality associated with emergency surgery for patients with acute type A aortic IMH is satisfactory. In clinical centers with well-established surgical techniques and postoperative management, emergency surgical treatment may provide a better outcome than conservative treatment for patients with acute type A aortic IMH.

METTL3-mediated m6A modification involved in electrical remodeling of atrial cardiomyocytes under high hydrostatic pressure / 中国药理学通报

To investigate the regulation of N6- methyladenosine ( m6A ) modification on L-type calcium channels in atrial myocytes under high hydrostatic pressure, mediated by methyltransferase-like protein 3 ( METTL3 ). Methods C57BL/6J mice were randomly assigned to the control group and the hypertension group ( treated with continuous administration of angiotensin for four weeks ). Masson staining was used to observe the fibrosis of mouse atrial tissue, while dot blot assay and Western blot were used to detect the levels of m6A, METTL3, and Cavi1 2 in the atrial tissue. A high hydrostatic pressure model was constructed using the HL-1 cell line cultured in vitro, and METTL3 was intervened to observe changes in m6A expression levels, METTL3 and Cavi1 2 levels in cells,and action potential duration ( APD ) and L-type calcium current ( I

Construction and application of competency-based portfolios for medical students / 中华医学教育探索杂志

Objective:To retrospectively construct competency-based portfolios for medical students to analyze the factors influencing competency self-assessment, and to explore an approach to efficient portfolio construction.Methods:The participants were randomly selected among medical graduates of 2015 in Shantou University Medical College. Through records collection and an online questionnaire survey, portfolios were built for the participants based on their development data during eight years from college entrance, college education, to post-graduation medical education. The correlation between variables was determined using Kendall's tau-b correlation coefficients. The inter-group differences were analyzed using the Mann-Whitney U test. Results:A total of 126 usable questionnaires for effective developmental portfolios were collected. There were a total of 208 indicators collected, including 79 questionnaire indicators (including 36 for competency self-assessment). The reliability coefficient (Cronbach's α) of the questionnaire was 0.984. The factors related to competency self-assessment were identified. Conclusion:This study provides a basis for the implementation of portfolio assessment, which can promote students' self-assessment and competency development. Optimizing the indicator system, building an online platform, increasing participants' participation motivation, and emphasizing self-reflection and feedback will help improve the efficiency of developmental portfolio construction and its performance.

Analysis of the new and serious adverse drug reactions in our hospital from 2017 to 2021 / 中国现代医生

Objective To analyze the characteristics of the new and severe adverse drug reactions(ADR)in our hospital from 2017 to 2021,and to provide a reference for the rational use of drugs in the clinic and the reduction of ADR.Methods Retrospective classification and statistical methods were used to comprehensively analyze new and serious adverse drug reactions reported in our hospital.Results Among the 178 reports,the reporting staff was mainly pharmacists(163 cases,91.57%).Adverse reactions mainly occurred in patients over 65 years old(88 cases,49.44%).The dosage forms involved are mainly injections and tablets.Among the drugs involved,antitumor drugs accounted for the highest proportion(34.95%).ADR involved the most systemic/organ damage was hematological system(34.95%),followed by digestive system damage(29.03%).Conclusion Monitoring of new and serious ADR should be paid a close attention,especially antitumor drugs,to improve the reporting rate and ensure the safety of patients'medication.

Arthroscopic medullary decompression combined with platelet-rich plasma therapy for bone marrow edema of the talus / 中华创伤杂志

Objective:To report the efficacy of arthroscopic medullary decompression combined with platelet-rich plasma (PRP) in the treatment of bone marrow edema of the talus.Methods:A retrospective case series study was used to analyze the clinical data of 17 patients with bone marrow edema of the talus admitted to Union Hospital, Tongji Medical College, Huazhong University of Science and Technology from January 2018 to July 2020. There were 11 males and 6 females, with the age range of 15-56 years [(45.7±4.3)years]. All patients were subjected to arthroscopic medullary decompression combined with the administration of PRP. Operation time and wound healing were recorded. Maximum area of bone marrow edema was measured by MRI preoperatively and at 6 and 12 months postoperatively. Ankle range of motion (ROM), visual analog score (VAS) and American Association of Foot and Ankle Surgery (AOFAS) ankle-hindfoot score were measured preoperatively and at 6 and 12 months postoperatively. Complications were also detected.Results:All patients were followed up for 12-41 months [(16.7±2.1)months]. Operation time was 45.2-68.5 minutes [(53.4±12.4)minutes]. All wounds were healed at stage I. The maximum area of bone marrow edema decreased from (28.2±6.9)mm 2 preoperatively to (16.3±5.7)mm 2 at 6 months postoperatively and to (7.1±1.7)mm 2 at 12 months postoperatively (all P<0.01). Ankle ROM increased from (52.2±8.9)° preoperatively to (72.3±3.1)° at 6 months postoperatively and to (83.1±2.8)° at 12 months postoperatively (all P<0.01). VAS decreased from (8.2±0.6)points preoperatively to (6.5±0.4)points at 6 months postoperatively and to (3.1±0.8)points at 12 months postoperatively (all P<0.01). AOFAS ankle-hindfoot score increased from (32.4±4.8)points preoperatively to (54.4±6.5)points at 6 months postoperatively and to (88.7±4.3)points at 12 months postoperatively (all P<0.01). There were significant differences in maximum area of bone marrow edema of the talus, ankle ROM, VAS and AOFAS ankle-hindfoot score at 12 months postoperatively when compared with those at 6 months postoperatively (all P<0.01). One patient showed the symptom of localized skin numbness postoperatively, and improved with nerve nutrition therapy. Conclusion:Arthroscopic medullary decompression combined with PRP therapy for bone marrow edema of the talus presents good short-term clinical benefits in terms of reduced extent of bone marrow edema, improved ankle ROM, attenuated pain, improved ankle joint function and few postoperative complications.

Comparison of Gamma 3 U-blade system and Gamma 3 nails in treatment of elderly patients with osteoporotic unstable femoral intertrochanteric fracture / 中华创伤骨科杂志

Objective:To compare the short-term therapeutic effects of Gamma 3 U-Blade system and Gamma 3 nails in the treatment of elderly patients with osteoporotic unstable intertrochanteric fracture.Methods:The data of 70 elderly patients with osteoporotic unstable intertrochanteric fracture were retrospectively analyzed who had been admitted to the Department of Orthopedics, Wuhan Fourth Hospital from June 2018 to December 2020. They were divided into 2 groups according to their treatments. In the U-Blade group of 35 cases subjected to fixation with Gamma 3 U-Blade system, there were 14 males and 21 females with an age of (77.7 ± 4.8) years; in the Gamma 3 nail group of 35 cases subjected to fixation with Gamma 3 nails, there were 14 males and 21 females with an age of (79.3 ± 5.2) years. The 2 groups were compared in terms of operation time, intraoperative blood loss, apex distance, fracture union time, postoperative complications, timed up and go (TUG) at postoperative 2 weeks, 3 months and 6 months, and hip function at postoperative 9 months.Results:There was no statistically significant difference in the preoperative general data between the 2 groups, showing comparability ( P>0.05). There was no significant difference either in operation time, intraoperative blood loss or apex distance between the 2 groups ( P>0.05). The fracture union time [(12.0 ± 0.2) weeks] and Harris hip score at postoperative 9 months [90 (90, 91)] in the U-Blade group were insignificantly different from those in the Gamma 3 nail group [(12.0 ± 0.3) weeks and 91 (89, 91)] ( P>0.05). The rate of implant-related complications in the U-Blade group [0% (0/35)] was significantly lower than that in the Gamma 3 nail group [17.1% (6/35)] and the TUGs at postoperative 2 weeks and 3 months [(80.2 ± 3.6) s and 45 (43, 49) s] in the former were significantly shorter than those in the latter [(89.3 ± 4.2) s and 56 (54, 59) s] ( P<0.05). Conclusion:In the treatment of elderly patients with osteoporotic unstable intertrochanteric fracture, compared with traditional Gamma 3 nails, Gamma 3 U-Blade system can reduce implant-related complications and facilitate early recovery of walking ability.

Treatment of tibial plateau fractures involving external posterior condyle collapse with 3D printed osteotomy guide plate combined with "Jail" screw technique / 中华骨科杂志

Objective:To investigate the clinical efficacy of 3D printed osteotomy guide plate combined with "Jail" screw technique in the treatment of tibial plateau fractures involving external posterior condylar collapse.Methods:From January 2016 to January 2021, 41 patients (22 males and 19 females) with tibial plateau fractures involving external posterior condylar collapse were treated with 3D printed osteotomy guide plate combined with "Jail" screw technique and followed up. The age was 47.4±11.5 years (range, 22-69 years). According to Schatzker fracture type, 18 cases were type IV, 14 cases were type V and 9 cases were type VI. All fractures were closed, and 12 of them were complicated with lateral meniscus injury, but none of them were complicated with nerve and vascular injury. The time from injury to operation was 7.2±3.4 d (range, 4-17 d). All patients underwent 3D CT scanning and digital modeling before operation. According to the modeling results, a 1∶1 solid size fracture model was made by 3D printing, and the osteotomy guide plate and the "Jail" screw preset guide plate were designed. During the operation, the tibial lateral condyle osteotomy was performed with customized osteotomy guide plate. After reduction, the fixation of the fracture was performed with the preset guide plate using "Jail" screw. Postoperative fracture reduction was evaluated according to Rasmussen score, and knee function was evaluated by Hospital for Special Surgery (HSS) score.Results:All the 41 patients were followed up for 15.2±5.8 months (range, 6-26 months). Immediate postoperative radiographs showed good fracture reduction, and the average healing time was 14.1±1.2 weeks (range, 12-17 weeks). One year after operation, the Rasmussen score of knee joint was 17.4±1.6 points (range, 13-19 points), of which 31 cases were excellent, 8 cases were good, and 2 cases were fair, with an excellent/good rate of 95% (39/41). HSS scores was 87.3±5.6 points (range, 68-95 points), including 30 excellent cases, 10 good cases and 1 fair case, with an excellent/good rate of 98% (40/41). The range of motion of knee joint was 126.8°±3.8°. At the last follow-up, no serious complications such as common peroneal nerve injury, popliteal vascular injury, postoperative infection, or internal fixation failure occurred.Conclusion:3D printed osteotomy guide plate combined with "Jail" nail placement technique is an effective method for tibial plateau fractures involving external posterior condylar collapse, and the postoperative treatment results are satisfactory. The use of customized osteotomy guide plate is more accurate and less damaging. The use of "Jail" screw preset guide plate can ensure more accurate screw placement.

Pulmonary nodules localization via microcoil and anchor with scaled suture guided by CT in thoracoscopic surgery: A retrospective cohort study / 中国胸心血管外科临床杂志

@#Objective    To compare the effectiveness and safety of preoperative lung localization by microcoil and anchor with scaled suture. Methods    A total of 286 patients underwent CT-guided puncture localization consecutively between October 2019 and December 2020 in our hospital. According to the different methods of localization, they were divided into a microcoil group (n=139, including 49 males and 90 females, aged 57.92±10.51 years) and an anchor group (n=147, including 53 males and 94 females, aged 56.68±11.31 years). The clinical data of the patients were compared. Results    A total of 173 nodules were localized in the microcoil group, and 169 nodules in the anchor group. The localization success rate was similar in the two groups. However, the anchor group was significantly better than the microcoil group in the localization time (8.15±2.55 min vs. 9.53±3.08 min, P=0.001), the pathological receiving time (30.46±14.41 min vs. 34.96±19.75 min, P=0.029), and the hemoptysis rate (10.7% vs. 30.1%, P=0.001), but the pneumothorax rate was higher in the anchor group (21.3% vs. 11.0%, P=0.006). Conclusion    Preoperative localization of small pulmonary nodules using anchor with suture is practical and safe. Due to its simplicity and convenience, it is worth of promotion in the clinic.

Detection of NPM1 Mutation in Acute Myeloid Leukemia by Droplet Digital PCR and Its Clinical Application Value / 中国实验血液学杂志

OBJECTIVE@#To establish the droplet digital PCR (ddPCR) assay for the detection of NPM1 type A mutation in patients with acute myeloid leukemia (AML), and to evaluate its specificity, sensitivity and its value in clinical application.@*METHODS@#NPM1 mutant and wildtype plasmids were used to verify the performance of ddPCR. Both ddPCR and Sanger sequencing were used to detect the bone marrow samples of 87 AML patients, which were confirmed by next generation sequencing (NGS). Moreover, NPM1 mutation burden was dynamically monitored in five patients by ddPCR.@*RESULTS@#The limit of blank (LOB) of ddPCR established for NPM1 mutation detection was 1.1 copies/μl, and the limit of detection (LOD) was 2.43 copies/μl, which had good linearity. Among the 87 newly diagnosed AML patients, ddPCR identified seventeen cases positive for NPM1 mutation (19.5%)， which was consistent with Sanger sequencing. NGS confirmed 12 positive cases, including 8 of type A mutations, 2 of type D mutations, and 2 of rare type mutations. The results of dynamic monitoring of NPM1 mutation burden in 5 patients showed that the NPM1 mutation burden decreased obviously even close to 0, when patients achieve complete remission after chemotherapy. However, the mutation burden was increased again at the time of relapse.@*CONCLUSION@#In this study, we established a ddPCR method for detection of NPM1 mutation with good sensitivity and repeatability, which can be used for screening NPM1 mutation in newly diagnosed AML patients and for minimal residual disease monitoring after remission in positive AML patients to guide treatment.

KIF17 Modulates Epileptic Seizures and Membrane Expression of the NMDA Receptor Subunit NR2B / 神经科学通报·英文版

Epilepsy is a common and severe brain disease affecting >65 million people worldwide. Recent studies have shown that kinesin superfamily motor protein 17 (KIF17) is expressed in neurons and is involved in regulating the dendrite-targeted transport of N-methyl-D-aspartate receptor subtype 2B (NR2B). However, the effect of KIF17 on epileptic seizures remains to be explored. We found that KIF17 was mainly expressed in neurons and that its expression was increased in epileptic brain tissue. In the kainic acid (KA)-induced epilepsy mouse model, KIF17 overexpression increased the severity of epileptic activity, whereas KIF17 knockdown had the opposite effect. In electrophysiological tests, KIF17 regulated excitatory synaptic transmission, potentially due to KIF17-mediated NR2B membrane expression. In addition, this report provides the first demonstration that KIF17 is modified by SUMOylation (SUMO, small ubiquitin-like modifier), which plays a vital role in the stabilization and maintenance of KIF17 in epilepsy.

Analysis on Role of mTORC1/4E-BP1 Axis in Idiopathic Pulmonary Fibrosis and Research Progress of Bupleuri Radix on Its Intervention / 中国实验方剂学杂志

Idiopathic pulmonary fibrosis （IPF） is a common， lethal interstitial lung disease characterized by airway remodeling， inflammation， alveolar destruction， and fibrosis. The mammalian target of rapamycin complex 1/4E binding protein 1 （mTORC1/4E-BP1） axis is closely related to the expression of collagen by fibroblasts， and its role in pulmonary fibrosis remains to be further elucidated. Traditional Chinese medicine （TCM） has shown promising efficacy in improving the lung function， exercise capacity， and quality of life in patients with IPF. The theory of "same treatment for different diseases" provides a TCM theoretical basis for the treatment of pulmonary fibrosis with Bupleuri Radix， while the research in western medicine has preliminarily shown that both the formulation and single herb as well as the active ingredients of Bupleuri Radix have good therapeutic effects on pulmonary fibrosis. Therefore， this review will elaborate on the role of the mTORC1/4E-BP1 axis in the pathomechanism of IPF， as well as the research results of the active components of Bupleuri Radix on the phosphoinositide 3-kinase/protein kinase B/mammalian target of rapamycin protein（PI3K/AKT/mTOR） pathway， so as to provide a reference for the treatment and drug development of IPF.

Analysis of the clinical features of 400 suspected cases of pediatric pertussis / 中华实用儿科临床杂志

Objective:To summarize the suspected cases of pertussis, to explore the pathogen, and to analyze the clinical features of pertussis.Methods:A retrospective study was conducted to analyze the clinical data of suspected pertussis cases who visited the Department of Infectious Diseases in the Children′s Hospital Affiliated to Capital Institute of Pediatrics from June 2015 to May 2019.Results:(1) The PCR test for respiratory secretions of Bacillus pertussis was completed in 400 cases, with 198 cases positive (49.5%). (2) Among the 198 cases, 158 cases with pertussis were less than 1 year old (79.8%), 113 cases had a clear history of close contact with cough patients (57.1%), and 162 cases were not vaccinated or did not complete full diphtheria and tetanus toxoids and pertussis(DTP) vaccination (81.8%). The incidence of spasmodic cough was 73.7%(146/198 cases); the duration from onset to diagnosis was (17.2±12.3) d; the incidence of cyanosis after cough was 31.3%(62/198 cases), cough with vomiting 17.7% (35/198 cases), inspiratory croup 12.1%(24/198 cases); other concomitant symptoms included wheezing, runny nose, fever, diarrhea, etc.(3) All the patients were divided into the pertussis group (198 cases), other pathogen group (104 cases), and unknown pathogen group (98 cases). Comparison of the clinical symptoms of the three groups showed the highest incidence of cyanosis after cough in pertussis group ( χ2=15.334, P<0.001), and the highest incidence of wheezing, dyspnea, fever, pulmonary rales and stridor in other pathogen group ( χ2=79.208, 38.214, 16.709, 44.794, 42.480, all P<0.001). The percentages of white blood cells, lymphocytes and platelets in the pertussis group were higher than those in the other two groups ( F=15.812, 18.198, 10.819, all P<0.001). Conclusions:Suspected cases of pertussis are infected with various pathogens.Improving the pertussis nucleic acid detection and respiratory virus detection can help to make a clear diagnosis.Pertussis is more common in infants under 1 year of age and in those who have not completed vaccination.The most prominent clinical symptom is spasmodic cough, and the incidence of cyanosis after cough is higher than that of patients infected with other pathogens.

Sitagliptin attenuates endothelial dysfunction independent of its blood glucose controlling effect

Although the contributions of sitagliptin to endothelial dysfunction in diabetes mellitus were previously reported, the mechanisms still undefined. Autophagy plays an important role in the development of diabetes mellitus, but its role in diabetic macrovascular complications is unclear. This study aims to observe the effect of sitagliptin on macrovascular endothelium in diabetes and explore the role of autophagy in this process. Diabetic rats were induced through administration of high-fat diet and intraperitoneal injection of streptozotocin. Then diabetic rats were treated with or without sitagliptin for 12 weeks. Endothelial damage and autophagy were measured. Human umbilical vein endothelial cells were cultured either in normal glucose or in high glucose medium and intervened with different concentrations of sitagliptin. Rapamycin was used to induce autophagy. Cell viability, apoptosis and autophagy were detected. The expressions of proteins in c-Jun N-terminal kinase (JNK)-Bcl-2-Beclin-1 pathway were measured. Sitagliptin attenuated injuries of endothelium in vivo and in vitro. The expression of microtubuleassociated protein 1 light chain 3 II (LC3II) and beclin-1 were increased in aortas of diabetic rats and cells cultured with high-glucose, while sitagliptin inhibited the over-expression of LC3II and beclin-1. In vitro pre-treatment with sitagliptin decreased rapamycin-induced autophagy. However, after pretreatment with rapamycin, the protective effect of sitagliptin on endothelial cells was abolished. Further studies revealed sitagliptin increased the expression of Bcl-2, while inhibited the expression of JNK in vivo . Sitagliptin attenuates injuries of vascular endothelial cells caused by high glucose through inhibiting over-activated autophagy. JNK-Bcl-2-Beclin-1 pathway may be involved in this process.

Investigation on radiation protection cognition and mental health of radiation workers in primary hospitals in a city / 中国辐射卫生

Objective To explore radiation protection cognition and mental health status of the staff in the second level and lower hospitals of a certain city. Methods Design a questionnaire on radiation protection knowledge and conduct a mental health test. The content of the questionnaire includes 26 questions in 2 dimensions, including general personal information and radiation protection knowledge. Among them, there are 20 questions about radiation protection knowledge. the self-rating symptom scale (SCL-90) is selected for the mental health test, with a total of 90 questions. Results The average score of the radiation protection knowledge question survey was (13.62 ± 2.21) points. The accuracy is less than 60% 102 people (16.04%); 60%~79% 430 people (67.61%); ≥ 80% 104 people (16.35%). SCL90 test indicates that 38.99% (248/636) of radiation workers is poor in mental health, the scores of each main factor are higher than the national norm. Among them, the somatization, obsessive-compulsive symptoms, interpersonal sensitivity and anxiety of radiation workers were relatively significant, with statistical differences (P < 0.05). Conclusion The overall cognition level of radiation protection staff in primary hospitals of a certain city is very low, therefore, training and supervision need to be strengthened. There are still some radiation workers whose mental health is not good, and active psychological intervention measures should be taken.

Effect of glucose metabolism disorders on the short-term prognosis in neonates with asphyxia: a multicenter study in Hubei Province, China / 中国当代儿科杂志

OBJECTIVES@#To study the effect of glucose metabolism disorders on the short-term prognosis in neonates with asphyxia.@*METHODS@#A retrospective analysis was performed on the medical data of the neonates with asphyxia who were admitted to 52 hospitals in Hubei Province of China from January to December, 2018 and had blood glucose data within 12 hours after birth. Their blood glucose data at 1, 2, 6, and 12 hours after birth (with an allowable time error of 0.5 hour) were recorded. According to the presence or absence of brain injury and/or death during hospitalization, the neonates were divided into a poor prognosis group with 693 neonates and a good prognosis group with 779 neonates. The two groups were compared in the incidence of glucose metabolism disorders within 12 hours after birth and short-term prognosis.@*RESULTS@#Compared with the good prognosis group, the poor prognosis group had a significantly higher proportion of neonates from secondary hospitals (48.5% vs 42.6%, @*CONCLUSIONS@#Recurrent hyperglycemia in neonates with asphyxia may suggest poor short-term prognosis, and it is necessary to strengthen the early monitoring and management of the nervous system in such neonates.

A retrospective safety study on screening of the samples in the clinical biobank of Beijing Hospital / 中华预防医学杂志

To investigate whether the laboratory specimens preserved in Beijing Hospital Biobank during a specific period had been contaminated by SARS-Cov-2 through a cross-sectional study, and to establish a retrospective biobank safety screening system. Laboratory specimens were collected from the Department of Respiratory and Critical Care Medicine and the Fever Clinic of Beijing Hospital from November 1, 2019 to January 22, 2020, nucleic acid and serological antibody testing were performed for SARS-CoV-2 in these specimens (including 79 serum, 20 urine, 42 feces and 21 bronchoalveolar lavage fluid specimens). The safety of the stored samples during this period was defined by negative and positive results. Both the nucleic acid test and serological antibody test showed negative for SARS-CoV-2, indicating that these specimens were safely stored in the biobank. High-risk specimens collected in our hospital during the early stage of the COVID-19 outbreak are free of SARS-CoV-2, and a safety screening strategy for the clinical biobank is established to ensure the biosafety of these samples.