Effects of herbal cake-partitioned moxibustion on plasma trimethylamine, trimethylamine-N-oxide, and flavin-containing monooxygenase 3 in atherosclerotic rabbits / 针灸推拿医学（英文版）

Objective: To investigate the effects of herbal cake-partitioned moxibustion on the plasma levels of trimethylamine (TMA), trimethylamine-N-oxide (TMAO), and flavin-containing monooxygenase 3 (FMO3) in rabbits with atherosclerosis (AS), as well as to explore the possible mechanism of herbal cake-partitioned moxibustion in treating AS. Methods: After 1-week adaptive feeding, 28 male New Zealand rabbits were divided into a blank group, a model group, an antibiotic group, and a herbal cake-partitioned moxibustion group according to the random number table method, with 7 rabbits in each group. Rabbits were fed with a basic diet in the blank group, while with a basic diet plus 1％ choline in the remaining groups to prepare the AS model. Rabbits were given drinking water with broad-spectrum antibiotics in the antibiotic group, and herbal cake-partitioned moxibustion in the herbal cake-partitioned moxibustion group for 12 weeks. The atherosclerotic plaques by hematoxylin-eosin (HE) staining, the blood lipid levels, the plasma TMA and TMAO levels by liquid chromatography-mass spectrometry were detected for rabbits in each group at the end of interventions. Liver FMO3 protein expression was detected by Western blotting. Liver FMO3 mRNA expression was detected by real-time fluorescence quantitative polymerase chain reaction. Results: HE staining showed that the arterial wall was rough, the intima was significantly thickened, and more foam cells and lipid deposits were seen in rabbits of the model group. Arterial wall thickening was not obvious with a few foam cells and lipid deposits in the herbal cake-partitioned moxibustion group. Compared with the blank group, the serum levels of low-density lipoprotein cholesterol (LDL-C) and total cholesterol (TC) were increased (P<0.01), the plasma levels of TMA and TMAO were increased (P<0.05, P<0.01), and the expression levels of liver FMO3 protein and mRNA were all increased (P<0.05, P<0.01); while the serum high-density lipoprotein cholesterol (HDL-C) level was decreased in the model group (P<0.05). Compared with the model group, the LDL-C and TC levels were decreased (P<0.01 or P<0.05), the HDL-C levels were increased (P<0.01), the TMA and TMAO levels were decreased (P<0.05), while the protein and mRNA expression levels of FMO3 were decreased without statistical significance in the herbal cake-partitioned moxibustion group and the antibiotic group. Conclusion: Herbal cake-partitioned moxibustion can slow atherosclerotic plaque formation and regulate lipid levels in AS rabbits, and the mechanism may be related to the down-regulation of TMA and TMAO expression in the plasma.

Comparison of pretreatment techniques for single-cell RNA sequencing of airway aspirate specimens / 中华微生物学和免疫学杂志

Objective:To investigate the appropriate pretreatment methods for single cell RNA sequencing of airway aspirate cells.Methods:Four fresh airway aspirate specimens were collected from four patients with acute respiratory tract infections. These specimens were digested with airway aspirate digester and prepared into single cell suspension. The cells were used for library construction directly (DE), or fixed with 10×Genomics Chromium Next GEM Single Cell Fixed RNA Sample Preparation Kit and then mixed to construct the library (DF), or cryopreserved, thawed, fixed (FF) before mixed to construct the library. All three methods were treated with oil emulsion using 10 4 cells and subjected to single-cell sequencing using the 10×Genomics platform. The number of obtained cells, data quality, annotated cell types and expression of marker genes were analyzed. Differences in the expression of highly variable genes (HVGs) of the same cell subsets obtained by the three pretreatment methods were compared using Pearson correlation. Expression of the differentially expressed genes in the same cell subpopulation obtained by different pretreatment methods was also compared. The correlation of the expression of differentially expressed genes between the same cell subsets obtained by the three pretreatment methods was analyzed by Pearson correlation. Results:The median numbers of single cells obtained using DE, FF and DF methods were 2 733, 1 140 and 5 897 ( P>0.05). The unique molecular identifiers were higher than 500. The median numbers of genes obtained using the three methods were 801, 887 and 1 259 ( P>0.05). The cells with novelty score over 0.8 accounted for 99%, 87% and 93%, respectively. There were nine cell subsets obtained by the three methods, including squamous cells, secretory cells, ciliated cells, T cells, B cells, macrophages, plasma cells and neutrophils. DF and FF methods could obtain more basal cells with specific high expression of keratin 5 than DE method. The differentially expressed and highly variable genes in the same cell subsets obtained by the three pretreatment methods showed high consistency in their expression with a significant correlation ( P<0.001). Conclusions:Under the same sequencing data volume, the quality of data obtained from fixed airway aspirate single-cell suspensions using the method of probe hybridization and transcriptome sequencing was comparable to that obtained directly from fresh cells. This method was more suitable for the pretreatment of clinical samples used for single-cell RNA sequencing.

Application of the interleukin-23 inhibitor guselkumab in the treatment of psoriasis / 中华皮肤科杂志

Guselkumab is the first monoclonal antibody that selectively targets interleukin (IL) -23. Several randomized controlled clinical trials have demonstrated that it is highly effective and safe in the treatment of moderate to severe plaque psoriasis, and can significantly improve the quality of life of patients. This review summarizes the action mechanisms of IL-23 and guselkumab, as well as the application of guselkumab in the treatment of psoriasis.

Application of case-based teaching method based on the Xuexitong learning platform in the online teaching of Digestive System / 中华医学教育探索杂志

This study explores the application effect of the case-based teaching method based on Xuexitong learning platform in the online teaching of Digestive System, and analyzes the learner's emotional experience, learning behavior, and learning effect in the case-based online teaching. The results of the study show that the case-based online teaching model based on Xuexitong learning platform improves students' online learning interest, and the students have good emotional experience, high learning enthusiasm, good classroom interaction, enhanced self-learning ability before and after class, and good learning effect. In addition, precise teaching can be used for individual students who are not enthusiastic about online learning.

Research progress in quality studies and antiviral effect of Qingyan Dropping Pills / 国际生物医学工程杂志

Qingyan Dropping Pills have the effects of relieving wind and heat, detoxifying, and promoting the pharynx. It is commonly used in traditional Chinese medicines to treat acute and chronic pharyngitis, as well as sore throats and dry throats caused by surgery. Recently, many studies have shown that Qingyan Dropping Pills have certain effects on bacteriostasis, anti-inflammatory, antioxidant, and antiviral activities. As the coronavirus disease 2019 (COVID-19) pandemic enters the post-epidemic era, the regular use of drugs for COVID-19 pandemic symptoms has become a new trend. Therefore, there is a good market prospect to explore and develop Chinese patent medicines with antiviral effects. A preliminary study on the herbal formula and material basis of Qingyan Dropping Pills revealed that they have potential for antiviral applications. In this paper, the research on the quality study and antiviral effect of Qingyan Dropping Pills was reviewed, and the research direction of its secondary development was discussed to provide ideas and references for the new use of old traditional Chinese medicines.

Application value of 3D print navigation module in the precise placement of thoracic and lumbar vertebral arch screws / 解剖学报

[ Abstract ] Objective To explore the effect of 3D print-based navigation module assisted placement of thoracolumbar pedicle screws. Methods From January 2019 to May 2021, we received 70 thoracic and lumbar fracture patients, divided into 3D technical group and conventional method group according to the surgical method, with 35 patients in each group. In the 3D technology group, pedicle screws were placed under the sight of the navigation module, while in the conventional group, pedicle screws were placed under the conventional C-arm fluoroscopy. The amount of intraoperative bleeding and time of C arm were counted in each patient. According to the different number of pedicle screw implantation in each patient, the average amount of blood loss, time and C-arm fluoroscopy times of each screw implantation were compared between the two groups. Ideal screw angles were designed for patients in both groups before surgery. Compared with the preoperative design, the difference between preoperative and postoperative screw angle and head angle was calculated and set as the deviation value. Two sets of data were compared. Visual analogue score(VAS), Japanese Orthopaedic Association (JOA) score, Oswestry disability index(ODI), vertebral height recovery ratio and Cobb’ s angle were compared between the two groups. Results The amount of blood loss, required time and exposure times of C-arm in 3D screw implantation group were significantly lower than those in conventional screw implantation group(P0. 05); In terms of Cobb’s angle and vertebral height recovery ratio, the 3D technique group was better than the conventional method group (P<0. 05). Conclusion The 3D printed navigation module can assist the precise placement of thoracolumbar pedicle screws, shorten the operation time, reduce intraoperative bleeding and c-arm exposure times, facilitate the recovery of the injured vertebral height, improve the efficacy.

Effects of dagliflozin on atrial tachyarrhythmia in rats with pulmonary arterial hypertension related right heart failure and its mechanisms / 中国药理学通报

Aim To investigate the effects of dagliflozin (DAPA) on atrial tachyarrhythmia (AT) in rats with right heart failure (RHF) due to pulmonary arterial hypertension (PAH) and the underlying mechanisms. Methods Sixty male SD rats were randomly divided into four groups: control group (CTL group), model group (MCT group), MCT + low-dose DAPA intervention group (MCT + LD group) and MCT + high-dose DAPA intervention group (MCT + HD group). After 35 days of continuous intervention, the model and cardiac function evaluation, atrial structural remodelling assessment, inflammatory factor detection, and in vivo cardiac electrophysiology experiments were completed. Results DAPA reduced menn pulmonaryarterial pressure (mPAP) and menn right ventricular pressure (mRVP) in the model rats (P <0.05), attenuated the inflammatory response (P < 0.05), reduced right atrial fibrosis (P <0.05), reduced AT induction rate (P < 0.05) and mean atrial tachyarrhythmia duration (MATD) (P < 0.05), the extent of which was more pronounced in the high-dose DAPA intervention group. Conclusions DAPA can reduce AT susceptibility in PAH-induced RHF rats, and the mechanisms may be related to the inhibition of systemic inflammation and anti-atrial fibrosis by DAPA.

Analysis of the feasibility and prognostic value of circulating tumor DNA monitoring in detecting gene mutations in patients with diffuse large B-cell lymphoma receiving chimeric antigen receptor T-cell therapy / 中华血液学杂志

Objective: To explore the prognostic value of circulating tumor DNA (ctDNA) testing in patients with refractory/relapsed diffuse large B-cell lymphoma (R/R DLBCL) undergoing chimeric antigen receptor T-cell (CAR-T) therapy, and to guide the prevention and subsequent treatment of CAR-T-cell therapy failure. Methods: In this study, 48 patients with R/R DLBCL who received CAR-T-cell therapy at the First Affiliated Hospital of Zhejiang University School of Medicine between December 2017 and March 2022 were included. Furthermore, ctDNA testing of 187 lymphoma-related gene sets was performed on peripheral blood samples obtained before treatment. The patients were divided into complete remission and noncomplete remission groups. The chi-square test and t-test were used to compare group differences, and the Log-rank test was used to compare the differences in survival. Results: Among the patients who did not achieve complete remission after CAR-T-cell therapy for R/R DLBCL, the top ten genes with the highest mutation frequencies were TP53 (41%), TTN (36%), BCR (27%), KMT2D (27%), IGLL5 (23%), KMT2C (23%), MYD88 (23%), BTG2 (18%), MUC16 (18%), and SGK1 (18%). Kaplan-Meier survival analysis revealed that patients with ctDNA mutation genes >10 had poorer overall survival (OS) rate (1-year OS rate: 0 vs 73.8%, P<0.001) and progression-free survival (PFS) rate (1-year PFS rate: 0 vs 51.8%, P=0.011) compared with patients with ctDNA mutation genes ≤10. Moreover, patients with MUC16 mutation positivity before treatment had better OS (2-year OS rate: 56.8% vs 26.7%, P=0.046), whereas patients with BTG2 mutation positivity had poorer OS (1-year OS rate: 0 vs 72.5%, P=0.005) . Conclusion: ctDNA detection can serve as a tool for evaluating the efficacy of CAR-T-cell therapy in patients with R/R DLBCL. The pretreatment gene mutation burden, mutations in MUC16 and BTG2 have potential prognostic value.

Network Analysis of Sleep Quality and Anxiety of First-Line Medical Staff in Epidemic Prevention / 中国医学伦理学

【Objective:】 To explore the network characteristics of sleep quality and anxiety in first-line medical staff fighting against COVID-19, further understand the relationship between sleep quality and anxiety, and provide basis for intervention. 【Methods:】 Using the convenient sampling method, this paper used the Pittsburgh Sleep Quality Index (PSQI) and Self Rating Anxiety Scale (SAS) to conduct a questionnaire survey on the front-line medical staff who fought against the epidemic during the COVID-19. Network analysis was used to construct sleep quality and anxiety network, and R language was used for statistical analysis and visualization. 【Results:】 In the network of sleep quality and anxiety of first-line medical staff fighting against COVID-19, "sleep disorder" and "sleep quality", "unfortunate premonition" and "inability to sit still", "syncope" and "hand and foot tingling" were highly related. "Fatigue", "dizziness" and "panic" had the highest expected influence. "Sleep quality", "sleep disorder" and "fatigue" had the highest bridge expected influence. The average predictability value of all nodes was 0.778. 【Conclusion:】 This paper used network analysis to explore the sleep quality and anxiety of first-line medical staff fighting against COVID-19 and found that there was a unique correlation path between them. Intervention against core symptoms can ameliorate anxiety and sleep problems to the great extent, and provide guidance for improving the physical and mental health.

Effects of dexmedetomidine on pulmonary function in patients receiving one-lung ventilation: a meta-analysis of randomized controlled trial / 대한마취과학회지

Background@#Mechanical ventilation, particularly one-lung ventilation (OLV), can cause pulmonary dysfunction. This meta-analysis assessed the effects of dexmedetomidine on the pulmonary function of patients receiving OLV. @*Methods@#The Embase, PubMed, MEDLINE, Cochrane Library, ClinicalTrials.gov, and Chinese Clinical Trial Registry databases were systematically searched. The primary outcome was oxygenation index (OI). Other outcomes including the incidence of postoperative complications were assessed. @*Results@#Fourteen randomized controlled trials involving 845 patients were included in this meta-analysis. Dexmedetomidine improved the OI at 30 (mean difference [MD]: 40.49, 95% CI [10.21, 70.78]), 60 (MD: 60.86, 95% CI [35.81, 85.92]), and 90 min (MD: 55, 95% CI [34.89, 75.11]) after OLV and after surgery (MD: 28.98, 95% CI [17.94, 40.0]) and improved lung compliance 90 min after OLV (MD: 3.62, 95% CI [1.7, 5.53]). Additionally, dexmedetomidine reduced the incidence of postoperative pulmonary complications (odds ratio: 0.44, 95% CI [0.24, 0.82]) and length of hospital stay (MD: −0.99, 95% CI [−1.25, −0.73]); decreased tumor necrosis factor-α, interleukin (IL)-6, IL-8, and malondialdehyde levels; and increased superoxide dismutase levels. However, only the results for the OI and IL-6 levels were confirmed by the sensitivity and trial sequential analyses. @*Conclusions@#Dexmedetomidine improves oxygenation in patients receiving OLV and may additionally decrease the incidence of postoperative pulmonary complications and shorten the length of hospital stay, which may be related to associated improvements in lung compliance, anti-inflammatory effects, and regulation of oxidative stress reactions. However, robust evidence is required to confirm these conclusions.

Efficacy of different frequency of intense pulsed light in the treatment of meibomian gland dysfunction / 国际眼科杂志(Guoji Yanke Zazhi)

AIM: To investigate the efficacy and safety of frequency of intense pulsed light(IPL)in the treatment of meibomian gland dysfunction.METHODS: In this retrospective study, a total of 108 patients(216 eyes)with meibomian gland dysfunction admitted to our hospital from January 2021 to June 2022 were included. They were divided into two groups, with 54 cases(108 eyes)IPL group(energy density 13.0J/cm2, pulse width 6ms, delay time 50ms), and 54 cases(108 eyes)in advanced optimal pulsed technology(AOPT)group(energy density 10.0-16.0J/cm2, pulse width 7-4-4 ms in unequal-division mode). The clinical effects of the two groups were observed and compared, including ocular surface symptoms, corneal fluorescein staining score(FL), tear film lipid layer thickness(LLT), ocular surface disease index(OSDI)score, mean non-invasive tear film break-up time(NIBUTav)and first non-invasive tear film break-up time(NIBUTf), tear meniscus height, score of meibomian gland secretion and its secretion traits, and the incidence of adverse effects was also calculated.RESULTS: The effective rate of the AOPT group(106 eyes, 98.1%)was higher than that of the IPL group(90 eyes, 83.3%, P&#x003C;0.05), as well as OSDI score, FL score, score of meibomian gland secretion and its secretion traits, LLT NIBUTav, NIBUTf and tear meniscus height(all P&#x003C;0.001). However, the incidence of adverse effects of the AOPT group(18 eyes, 16.7%)was higher than that of the IPL group(4 eyes, 3.7%; P&#x003C;0.05).CONCLUSION: With significant improvement in the ocular surface symptoms and function, AOPT has a better therapeutic effect on the treatment of meibomian gland dysfunction, but it has more adverse reactions. Therefore, optimal treatment plan should be fully selected in combination with the actual clinical situation.

The clinical characteristics of delayed antibody production in mycoplasma pneumoniae pneumonia in children / 中国小儿急救医学

Objective:To clarify the clinical characteristics and related fators of children with delayed antibody production of mycoplasma pneumoniae pneumonia(MPP).Methods:Two hundreds and eithty-five cases of children hospitalized at Children′s Hospital of Soochow University with MPP(positive for nucleic acid testing of respiratory secretion)were chosen from January 1st, 2019 to September 31st, 2019.Delayed antibody production group included 36 cases, who were tested for negative IgM antibody meanwhile the titer of IgG antibody changed less than 4 folds within 14 days.Positive group included 249 cases who were tested for positive IgM antibody or the titer of IgG antibody changed over 4 folds within 14 days.The characteristics of clinical manifestation, immunology and radiology were comparatively analyzed.Results:The medium age of delayed antibody production group was 0.75(0.30, 2.78)years old, which was obviously younger than that from positive group[5.50(3.73, 7.20)years old]( P<0.001). Low level of serum immunoglobulin IgG was the independent effect factor of delayed production for Mycoplasma pneumoniae antibody( P=0.037). When the serum immunoglobulin IgG level was lower than 7.155mmol/L, the sensitivity of predicting delayed production for mycoplasma pneumoniae antibody would be 0.819 and the specificity was 0.833.The underlying diseases associated with delayed antibody production were hospitalization history during neonatal period( P=0.007)and congenital heart disease( P=0.001). There were 11.11%(4/36)of children appearing spasmodic cough, 41.67%(15/36)of children showing wheezing and 33.33%(12/36)showing diarrhea in delayed antibody group, which were significantly higher than those in positive group[0.40%(1/249), 24.50%(61/249)and 9.64%(24/249), respectively, P<0.05]. The incidence of fever in delayed antibody group were 63.89%(23/36), which was lower than that in positive group[92.37%(230/249)]( P<0.001), meanwhile, the fever last time was 2.50(0, 4.75)days in delayed antibody group, which was shorter than that in positive group[ 7(5.00, 8.50)days]( P<0.001). In the delayed antibody group, there was 19.44%(7/36)of children sufferring from lobar pneumonia, and no extrapulmonary manifestations occurred, which were significantly lower than those in positive group[75.50%(188/249), 14.86%(37/249)]( P<0.05). Conclusion:Delayed antibody production in children with MPP is more common when serum immunoglobulin IgG level is lower than 7.155 mmol/L, especially in the presence of neonatal hospital history and congenital heart disease.The clinical manifestations of these children are mainly characterized by spasmodic cough and wheezing, with low probability of fever, lobular pneumonia and extrapulmonary manifestations.

Correlation between serum Mir-137 and Mir-140 levels and clinicopathological features and efficacy of postoperative chemotherapy with ACT in patients with breast cancer / 中华内分泌外科杂志

Objective:To investigate the relationship between serum Mir-137 and Mir-140 levels and clinicopathological features of breast cancer patients and recurrence and metastasis after postoperative chemotherapy with adriamycin + cyclophosphamide + docetaxel (ACT) .Methods:Female breast cancer patients who received chemotherapy of ACT regimen after modified radical mastectomy or breast-conserving radical mastectomy in Tongcheng People’s Hospital from Jan. 2017 to Apr. 2019 were included as research objects, and 60 healthy subjects who underwent physical examination in our hospital during the same period were included as healthy control group. Two ml of fasting peripheral venous blood was extracted from all patients before surgery and 1 week after the end of chemotherapy, and the relative expression levels of Mir-137 and Mir-140 in serum were determined by quantitative real-time polymerase linked reaction. Clinicopathological data were collected, including age, menopausal status, pathological type, TNM stage, estrogen receptor (ER) status, progesterone receptor, PR and human epidermal growth factor receptor-2 (HER2) status. All breast cancer patients were followed up for 3 years after surgery, and postoperative recurrence, distant metastasis and death time were recorded according to medical records and follow-up results.Results:The relative expression of Mir-137 in breast cancer patients was 0.89±0.15, significantly lower than that in healthy controls (1.34±0.21) ( t=4.985, P<0.001) . The relative expression of Mir-140 in breast cancer patients was 0.83±0.14, significantly lower than that in healthy controls (1.18±0.17) ( t=4.245, P<0.001) . Serum Mir-137 level was correlated with TNM stage, ER status and HER2 status in breast cancer patients ( t=2.56, 2.06, 2.24, P=0.003, 0.007, 0.004) , and serum Mir-140 level was correlated with TNM stage and HER2 status in breast cancer patients ( t=1.954, 2.114, P=0.008, 0.006) . After chemotherapy, the relative expression levels of serum Mir-137 and serum Mir-140 in breast cancer patients were 1.05±0.16 and 0.97±0.18, respectively, significantly higher than those before surgery ( t=2.689 and 3.051, P=0.004 and 0.002, respectively) . A total of 17 patients developed recurrence or distant metastasis within 3 years, and the 3-year progression-free survival rate was 71.67% (43/60) . The mir-137 level of patients with recurrent metastasis was 0.74±0.14, significantly lower than that of patients without recurrent metastasis (0.94±0.13) , the difference was statistically significant ( t=4.149, P<0.001) . The mir-140 level of patients with recurrent metastasis was 0.73±0.10, which was significantly lower than that of patients without recurrent metastasis (0.87±0.13) , the difference was statistically significant ( t=3.634, P<0.001) . ROC curve analysis showed that the sensitivity and specificity of serum Mir-137 expression level in predicting recurrence and metastasis of breast cancer patients were 82.4% and 79.1%, respectively. The sensitivity and specificity of serum Mir-140 expression level in predicting recurrence and metastasis of breast cancer patients were 82.4% and 69.8%, respectively. Kaplan-meier survival curve analysis showed that the 3-year progression-free survival rate of patients with low Mir-137 level was significantly lower than that of patients with high Mir-137 level ( P=0.025) . There was no significant difference in 3-year progression-free survival between patients with low mir-140 level and those with high Mir-140 level ( P=0.282) . Conclusion:Serum Mir-137 and Mir-140 levels are related to clinicopathological features and the efficacy of ACT chemotherapy after operation, which can be used as indicators to evaluate the disease and prognosis.

Analgesic modalities for ambulatory laparoscopic cholecystectomy / 中华普通外科杂志

Objective:To explore the analgesic methods in ambulatory laparoscopic cholecystectomy (LC) patients.Methods:Three hundred patients were randomly divided into six groups receiving different analgesic regimen. VAS scores, postoperative blood pressure, CRP, IL-6, and the occurrence of postoperative adverse effects were recorded at 2, 4, 8, and 12 h postoperatively.Results:The success rate of ambulatory LC in this study was 66.22%. The dynamic VAS scores of patients in each group gradually decreased with time elapsing, with groups B and C being significantly lower than group A at 2 h and 4 h postoperatively ( P<0.05). Groups D, E and F were significantly different from group A at all postoperative time points ( P<0.05). There was a statistically significant difference at 8 h and 12 h postoperatively in group B vs. group D and group C vs. group E (all P<0.05). There was significant difference at the 12 h postoperatively between groups (B and C) compared to group F ( P<0.05). There was a significant difference in CRP and IL-6 between the groups (all P<0.05). Postoperative dizziness, nausea and delayed discharge were significantly higher in patients using analgesic pumps ( P<0.05). Conclusion:Local infiltration of ropivacaine combined with postoperative parecoxib sodium drip is a recommended analgesic regimen.

Association of Increased Amygdala Activity with Stress-Induced Anxiety but not Social Avoidance Behavior in Mice / 神经科学通报·英文版

Chronic stress leads to many psychiatric disorders, including social and anxiety disorders that are associated with over-activation of neurons in the basolateral amygdala (BLA). However, not all individuals develop psychiatric diseases, many showing considerable resilience against stress exposure. Whether BLA neuronal activity is involved in regulating an individual's vulnerability to stress remains elusive. In this study, using a mouse model of chronic social defeat stress (CSDS), we divided the mice into susceptible and resilient subgroups based on their social interaction behavior. Using in vivo fiber photometry and in vitro patch-clamp recording, we showed that CSDS persistently (after 20 days of recovery from stress) increased BLA neuronal activity in all the mice regardless of their susceptible or resilient nature, although impaired social interaction behavior was only observed in susceptible mice. Increased anxiety-like behavior, on the other hand, was evident in both groups. Notably, the CSDS-induced increase of BLA neuronal activity correlated well with the heightened anxiety-like but not the social avoidance behavior in mice. These findings provide new insight to our understanding of the role of neuronal activity in the amygdala in mediating stress-related psychiatric disorders.

An Insight of the First Community Infected COVID-19 Patient in Beijing by Imported Case: Role of Deep Learning-Assisted CT Diagnosis / 中国医学科学杂志(英文版)

In the era of coronavirus disease 2019 (COVID-19) pandemic, imported COVID-19 cases pose great challenges to many countries. Chest CT examination is considered to be complementary to nucleic acid test for COVID-19 detection and diagnosis. We report the first community infected COVID-19 patient by an imported case in Beijing, which manifested as nodular lesions on chest CT imaging at the early stage. Deep Learning (DL)-based diagnostic systems quantitatively monitored the progress of pulmonary lesions in 6 days and timely made alert for suspected pneumonia, so that prompt medical isolation was taken. The patient was confirmed as COVID-19 case after nucleic acid test, for which the community transmission was prevented timely. The roles of DL-assisted diagnosis in helping radiologists screening suspected COVID cases were discussed.

The preliminary value of vector flow mapping on assessment of left intraventricular pressure difference in patients with paroxysmal atrial fibrillation / 生物医学工程学杂志

This study aims to explore the intraventricular pressure difference (IVPD) within left ventricle in patients with paroxysmal atrial fibrillation (PAF) by using the relative pressure imaging (RPI) of vector flow mapping (VFM). Twenty patients with paroxysmal atrial fibrillation (PAF) and thirty control subjects were enrolled in the study. Systolic and diastolic IVPD derived from VFM within left ventricle and conventional echocardiographic parameters were analyzed. It was found that the B-A IVPD of left ventricle in PAF patients showed the same pattern as controls-single peak and single valley during systole and double peaks and double valleys during diastole. Basal IVPD was the main component of base to apex IVPD (B-A IVPD). The isovolumetric systolic IVPD was associated with early systolic IVPD, early systolic IVPD was associated with late systolic IVPD, and late systolic IVPD was associated with isovolumic diastolic IVPD (all

Effect of / 生物医学与环境科学（英文）

Objective@#This study aimed to investigate the effects of @*Methods@#In this study, 0.1% DMG was supplemented in 20% casein diets that were either folate-sufficient (20C) or folate-deficient (20CFD). Blood and liver of rats were subjected to assays of Hcy and its metabolites. Hcy and its related metabolite concentrations were determined using a liquid chromatographic system.@*Results@#Folate deprivation significantly increased pHcy concentration in rats fed 20C diet (from 14.19 ± 0.39 μmol/L to 28.49 ± 0.50 μmol/L; @*Conclusion@#DMG supplementation exhibited hypohomocysteinemic effects under folate-sufficient conditions. By contrast, the combination of folate deficiency and DMG supplementation has deleterious effect on pHcy concentration.

Successful treatment of refractory pure red cell aplasia with eltrombopag after ABO-incompatible allogeneic hematopoietic stem cell transplantation / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

Pure red cell aplasia (PRCA) is a well-recognized complication of ABO major mismatched allogeneic hematopoietic stem cell transplantation (allo-HSCT), with a reported incidence of 10%-20% (Zhidong et al., 2012; Busca et al., 2018). It is clinically characterized by anemia, reticulocytopenia, and the absence of erythroblasts in a normal-appearing bone marrow biopsy (Shahan and Hildebrandt, 2015). The mechanism for PRCA has been presumed to be persistence of recipient isoagglutinins, produced by residual host B lymphocytes or plasma cells, which can interfere with the engraftment of donor erythroid cells (Zhidong et al., 2012). Several risk factors of PRCA at presentation are known, such as presence of anti-A isoagglutinins before transplantation, reduced intensity conditioning, absence of acute graft-versus-host disease (GVHD), sibling donors, and cyclosporin A (CsA) as GVHD prophylaxis (Hirokawa et al., 2013). PRCA is not considered to be a barrier to HSCT, as some patients can recover spontaneously or benefit from various approaches including high-dose steroids, erythropoietin (EPO), plasma exchange, immunoadsorption, donor lymphocyte infusion (DLI), treatment with rituximab, bortezomib, or daratumumab, and tapering or discontinuation of immunosuppression (Hirokawa et al., 2013; Bathini et al., 2019). However, there are still some patients who fail to respond even to aggressive treatment; they become red cell transfusion-dependent and iron-overloaded, and their life quality is impaired.

A Human Case of Lumbosacral Canal Sparganosis in China

In this study, we intended to describe a human case of lumbosacral canal sparganosis in People’s Republic of China (China). A 56-year-old man was admitted to Xiangya Hospital Central South University in Changsha, Hunan province, China after having an experience of perianal pain for a week. An enhancing mass, a tumor clinically suggested, was showed at the S1-S2 level of the lumbosacral spine by the examination of magnetic resonance imaging (MRI) with gadolinium contrast. The patient was received the laminectomy from S1 to S2, and an ivory-white living worm was detected in inferior margin of L5. In ELISA-test with cerebrospinal fluid (CSF) and serum samples, anti-sparganum antibodies were detected. He had a ingesting history of undercooked frog meat in his youth. By the present study, a human case of spinal sparganosis invaded in lumbosacral canal at the S1-S2 level was diagnosed in China. Although the surgical removal of larvae is known to be the best way of treatment for sparganosis, we administered the high-dosage of praziquantel, albendazole and dexamethasone to prevent the occurrence of another remain worms in this study.