Objective:To evaluate the short-term rehabilitation effect of wearable visual training devices based on extended reality (XR) glasses in patients after macular hole surgery.Methods:A self-controlled study was conducted.Eleven patients with monocular low vision after macular hole surgery were recruited at Renmin Hospital of Wuhan University from October 2022 to March 2024.All patients underwent biofeedback training for 3 months using the independently developed visual rehabilitation training glasses LOOKBON T10.The LogMAR best corrected visual acuity (BCVA), retinal sensitivity, effective fixation rate, fixation stability, reading speed, vertical metamorphopsia (MV), horizontal metamorphopsia (MH), and Chinese version of the visual-related quality of life assessment form (CVRQoL-25) were compared before and after training.This study adhered to the Declaration of Helsinki.The study protocol was approved by the Ethics Committee of Renmin Hospital of Wuhan University (No.WDRY2024-K263).Written informed consent was obtained from each subject.Results:After training, the patients' BCVA, retinal sensitivity, effective fixation rate, fixation stability, and reading speed were 0.69±0.19, (21.61±2.75)db, (92.43±4.06)%, (93.09±4.31)%, and (104.82±21.85) characters/minute, respectively, which were significantly improved compared to 0.85±0.28, (17.71±3.17)db, (31.83±19.05)%, (32.35±19.12)%, and (69.64±20.17) characters/minute before training ( t=5.253, -5.987, -11.561, -12.003, -11.682; all at P<0.001).After training, MV and MH were (0.29±0.20)° and (0.21±0.24)°, respectively, which were significantly reduced compared to pre-training (0.44±0.24)° and (0.43±0.41)° ( t=9.238, 4.068; both at P<0.01).After training, the CVRQoL-25 score was 1 193.18±229.43, which was significantly higher than pre-training 947.73±203.86 ( t=-11.687, P<0.001). Conclusions:The application of wearable visual training equipment based on XR glasses can effectively improve the visual function of patients with poor visual function recovery after macular hole surgery, and enhance their quality of life.

Coronaviruses are single-stranded RNA viruses that are common in animals. In the past 20 years, there have been three large-scale epidemics of coronaviruses, including severe acute respiratory syndrome (SARS), Middle East respiratory syndrome (MERS), and coronavirus disease (COVID). Heart disease is an independent risk factor for severe COVID. At the same time, SARS-CoV-2 infection is often complicated with myocardial injury, which is closely related to poor prognosis. The receptors of SARS coronavirus are angiotensin-converting enzyme 2 (ACE2) and CD209L, among which ACE2 is the main receptor, and ACE2 is abundant in the heart. The receptor of MERS-coronavirus is dipeptide peptidase 4 (DPP4), which is not expressed in myocardial cells, but existed in vascular endothelial cells and blood. These receptors are important factors for the myocardial injury caused by coronavirus infection.
Animals ; COVID-19 ; Angiotensin-Converting Enzyme 2 ; SARS-CoV-2 ; Endothelial Cells ; Peptidyl-Dipeptidase A/genetics*

BACKGROUND: Vancomycin treatment failure against vancomycin-susceptible gram-positive cocci is not rare in the intensive care unit (ICU). One of the reasons for this is the substandard drug trough concentration. We aimed to examine the hypothesis that the target serum concentration could be reached earlier with a loading dose of vancomycin. METHODS: This retrospective cohort study was conducted at our ICU between June 2018 and June 2020 and involved patients who were suspected of having, or confirmed to have, gram-positive cocci infection and treated with vancomycin. One group of the patients was administered a loading dose of vancomycin (loading group) and compared with the group that did not receive a loading dose (control group). The baseline characteristics, vancomycin serum concentrations, and clinical outcomes were collected and analyzed. RESULTS: Fifty-five patients were finally included, of which 29 received a loading dose of vancomycin. The serum concentration of vancomycin before the second dose was significantly higher for the loading group than for the control group (10.3 ± 6.1 mg/L vs. 5.7 ± 4.4 mg/L, P = 0.002). The results for both groups were similar before the fifth dose (12.4 ± 7.3 mg/L vs. 10.3 ± 6.3 mg/L in the loading and the control groups, respectively; P = 0.251). The 28-day mortality was lower for the loading group than for the control group (6.7% vs. 34.6% in the loading and control groups, respectively; P = 0.026). No significant differences were observed in serum creatinine (Cr) concentrations of the two groups. CONCLUSION: With the loading dose of vancomycin, the target serum concentration of vancomycin may be reached earlier without increasing the risk of acute kidney injury. TRIAL REGISTRATION https://www.chictr.org.cn; ChiCTR2000035369.
Anti-Bacterial Agents/therapeutic use* ; Creatinine ; Humans ; Intensive Care Units ; Retrospective Studies ; Vancomycin

To implement the fundamental task of the Ministry of Education on carrying out curriculum ideological and political education and promoting colleges and universities to implement the morality education, this study tried to carry out ideological and political education for medical students in "medical functional science experimental course", and organically integrated the ideological and political elements of "loving experimental animals and reverencing for life" into the teaching of this course. This paper explored the implementation process and effect evaluation of ideological and political courses from the aspects of teaching objects, design, objectives, in-class and off-class practical activities, and analyzed the current problems and future directions. In order to provide beneficial ideas for the ideological and political construction of college curriculum and help cultivate excellent and innovative medical talents with warmth and feelings.

Objective:To investigate the human milk oligosaccharides (HMOs) levels in breast milk of mothers delivering preterm infants and their effects on the early growth and development of infants.Methods:In this prospective cohort study, full-term and preterm newborns whose parents decided to breastfeed were recruited from Peking University Third Hospital between December 1, 2017 and November 30, 2018. The preterm infants were divided based on their gestational ages into extremely preterm (<28 weeks), very preterm (28-31 +6 weeks) and moderate to late preterm (32-36 +6 weeks) groups. Breast milk was collected from mothers at 7, 14, 28 and 120d postpartum. 368 breast milk samples were collected from 125 mothers in this study, including 54 mothers of full-term infants, 23 mothers of moderate to late preterm infants, 39 mothers of very preterm infants, and 9 mothers of extremely preterm infants. Ultra-performance liquid chromatography-mass spectrometer (UPLC-MS/MS) was used to determine the concentration of 2′-fucosyllactose (2′FL), 3-fucosyllactose (3FL), 3′-sialyllactose (3′SL), A-tetrasaccharide (P1), lacto-N-tetraose (LNT), lacto-N-neotetraose (LNnT), lacto-N-fucopentaose Ⅱ (LNFP-Ⅱ) and lacto-N-fucopentaose Ⅴ (LNFP-Ⅴ). Secretor status of mothers was defined as 2′-fucosyllactose (2′FL) concentration in colostrum and transitional milk greater than 200 μg/mL. Weight gain and the occurrence of allergic diseases of infants were collected at 120 d(4 months) postpartum. The chi-square test or the Fisher′s exact test was used for the comparison of categorical data between groups; Kruskal-Wallis test and Wilcoxon rank sum test were used for comparison of continuous data between groups. Nemenyi test was used for multiple comparison. Results:79.2% (99/125) of the mothers were secretor. There were no statistical differences between groups in the secretor status of mothers (χ2=1.31, P>0.05). The total concentration of HMOs peaked at 1-2 weeks postpartum. Compared to the preterm milk, the HMOs from the term milk was trending downwards at an earlier time. In the breast milk of secretor mothers on 28 d, total concentration of HMOs significant differed among the three groups of preterm milk and the term milk, with the median value of 4 587.09,4 615.25,5 277.44,5 476.03 μg/mL, respectively (Kruskal-Wallis χ2=8.1234, P=0.044). When analyzed by the median weight gain of the infants (low vs high weight gain) at 4 months postpartum, 2′FL was significantly lower in the high weight gain group at 7 d (1 818.04 μg/mL vs 2 181.67 μg/mL, W=1 386, P=0.018), while LNT & LNnT were significantly higher (1 182.36 μg/mL vs 1 053.62 μg/mL, W=816, P=0.044). The level of 3FL at 120 d was significantly affected by presence of allergic disease in infants, breast milk from mothers of infants with allergic disease had lower 3FL than those from mothers of infants without allergic disease (256.17 μg/mL vs 286.18 μg/mL, W=564, P=0.026). Conclusions:The overall profiles of HMOs in breast milk of mothers delivering preterm infants was basically the same as that of mothers delivering term infants; individual HMOs play a role in weight gain and the development of allergic diseases in preterm infants, but the mechanism is unclear and needs further study.

Objective:To investigate the human milk oligosaccharides (HMOs) levels in breast milk of mothers delivering preterm infants and their effects on the early growth and development of infants.Methods:In this prospective cohort study, full-term and preterm newborns whose parents decided to breastfeed were recruited from Peking University Third Hospital between December 1, 2017 and November 30, 2018. The preterm infants were divided based on their gestational ages into extremely preterm (<28 weeks), very preterm (28-31 +6 weeks) and moderate to late preterm (32-36 +6 weeks) groups. Breast milk was collected from mothers at 7, 14, 28 and 120d postpartum. 368 breast milk samples were collected from 125 mothers in this study, including 54 mothers of full-term infants, 23 mothers of moderate to late preterm infants, 39 mothers of very preterm infants, and 9 mothers of extremely preterm infants. Ultra-performance liquid chromatography-mass spectrometer (UPLC-MS/MS) was used to determine the concentration of 2′-fucosyllactose (2′FL), 3-fucosyllactose (3FL), 3′-sialyllactose (3′SL), A-tetrasaccharide (P1), lacto-N-tetraose (LNT), lacto-N-neotetraose (LNnT), lacto-N-fucopentaose Ⅱ (LNFP-Ⅱ) and lacto-N-fucopentaose Ⅴ (LNFP-Ⅴ). Secretor status of mothers was defined as 2′-fucosyllactose (2′FL) concentration in colostrum and transitional milk greater than 200 μg/mL. Weight gain and the occurrence of allergic diseases of infants were collected at 120 d(4 months) postpartum. The chi-square test or the Fisher′s exact test was used for the comparison of categorical data between groups; Kruskal-Wallis test and Wilcoxon rank sum test were used for comparison of continuous data between groups. Nemenyi test was used for multiple comparison. Results:79.2% (99/125) of the mothers were secretor. There were no statistical differences between groups in the secretor status of mothers (χ2=1.31, P>0.05). The total concentration of HMOs peaked at 1-2 weeks postpartum. Compared to the preterm milk, the HMOs from the term milk was trending downwards at an earlier time. In the breast milk of secretor mothers on 28 d, total concentration of HMOs significant differed among the three groups of preterm milk and the term milk, with the median value of 4 587.09,4 615.25,5 277.44,5 476.03 μg/mL, respectively (Kruskal-Wallis χ2=8.1234, P=0.044). When analyzed by the median weight gain of the infants (low vs high weight gain) at 4 months postpartum, 2′FL was significantly lower in the high weight gain group at 7 d (1 818.04 μg/mL vs 2 181.67 μg/mL, W=1 386, P=0.018), while LNT & LNnT were significantly higher (1 182.36 μg/mL vs 1 053.62 μg/mL, W=816, P=0.044). The level of 3FL at 120 d was significantly affected by presence of allergic disease in infants, breast milk from mothers of infants with allergic disease had lower 3FL than those from mothers of infants without allergic disease (256.17 μg/mL vs 286.18 μg/mL, W=564, P=0.026). Conclusions:The overall profiles of HMOs in breast milk of mothers delivering preterm infants was basically the same as that of mothers delivering term infants; individual HMOs play a role in weight gain and the development of allergic diseases in preterm infants, but the mechanism is unclear and needs further study.

Integrated experiment course is beneficial to optimizing the whole structure of medical courses and plays an important role in improving medical students' comprehensive quality and innovation capability. After several years of reform and exploration, Shanghai Jiao Tong University School of Medicine has developed the medical functional integrated experiment course with concept of "strengthen quality, reinforce foundation, encourage innovation and provide professional service", established a diversified evaluation system, and developed a corresponding assessment scale for reviewing students' comprehensive ability and the quality of experiment teaching. This paper investigated and prospected how to construct and optimize this evaluation system from the aspects of the relationship between evaluation method and course structure, and their effects, so as to provide strategic guidance for the further development of integrated experiment course.

Objective:To investigate the activation of peripheral basophils from patients with rheumatoid arthritis ( RA) and its mechanisms. Methods:The activation markers including CD203c and the proportion of IL-4 positive rate of peripheral basophils from RA patients and healthy controls were detected by flow cytometry. Serum levels of IgE in RA patients and healthy controls were detected by electrochemilu minescence immunoassay. Basophils were negatively isolated and co-cultured with or without purified IgE,anti-IgE as positive control,then,the expression of CD203c and propotion of IL-4 positive basophils were detected by flow cytometry. Results:The expression of CD203c and IL-4 positive rate of basophils from RA patients were higher than that of healthy controls (P<0. 05). Serum levels of IgE in RA were higher than that of healthy controls (P<0. 05). After co-cultured with isolated IgE from RA patients,basophils negatively isolated from healthy controls were activated,and higher expression of CD203c and proportion of IL-4 (P<0.05). Conclusion:Basophil activation is related with development of RA,and its activation is mainly mediated by IgE. Targeting basophil and its activation pathway would be expected to provide new strategies for the treatment of RA.

Objective: To study the biotransformation of Poria cocos by Ganoderma lucidum and the changes of total polysaccharide and total triterpenes contents of the biotransformation products. Method: The experiment uses the microwave method to extract and sulfuric acid-phenol method to measure total polysaccharide content. And the ultrasonic wave method was used to extract total triterpenes and the content was measured by vanillin-perchloric method. Result: After treatment by G. lucidum, the total polysaccharide and triterpenes content of the biotransformation products were significantly higher than the non-conversed P. cocos (P<0.01), showing that the original performance of P. cocos was changed by way of biotransformation of G. lucidum; P. cocos had a promotion effect on the growth of G. lucidum. Conclusion: Biotransformation of P. cocos for Increasing the total polysaccharide and triterpenes contents by using G. lucidum has advantages of simple, low cost and so on. This method has a certain application value in modernization of Chinese traditional medicine.

OBJECTIVETo study the key processes of Fufang Kushen injection for technical upgrading.

METHODTotal alkaloids (sum of matrine, oxymatrine, sophoridine and oxysophoridine) and macrozamin were selected as quality evaluation markers. The key processes of percolation with acetic acid and discoloration with activated carbon were optimized by orthogonal experiment design, and process of purification with alcohol was investigated by single factor method.

RESULTThe optimal condition of percolation process is as follows: the medicinal materials are soaked for 9 h with 4 times water containing 0.8% acetic acid, then percolation starts at flow-rate of 5 mL x min(-1) x kg(-1) and adding 2 times 0.8% acetic acid solution is added at the same velocity. Purification process is that the concentrated solution is precipitated by 60%, 80% and 90% alcohol in turn. Discoloration process is that 6 activated carbon is added into the solution which is heated at 60 degrees C for 20 minutes.

CONCLUSIONThe optimal extraction process is not only simple, saving the industrial cycle, reducing the potential risk, but also decreasing the acetic acid amount to guarantee the acid-insoluble ash as well as the functional ingredients.