Objective　To analyze the epidemiological characteristics and infection sources of six human Streptococcus suis infection outbreaks in Shenzhen in 2023, and to provide a reference for effective prevention and control of the epidemic. Methods　Field epidemiological methods were used to investigate the disease onset and medical consultation process, exposure history of household and farmer market pork stalls, and other relevant factors. Data on patient demographics, clinical profiles, epidemiological characteristics, and common exposure cases were collected. Blood, cerebrospinal fluid, and environmental samples were collected for pathogen detection and genotyping. Spatial-geographical analysis of infection characteristics was performed using the professional mapping software ArcMap. Results　In 2023, a total of six cases were reported in Shenzhen, all of which were severe hospitalized cases with no deaths. Among them, five cases were of the meningitis type, and one was of the common type. All patients improved and were discharged after treatment. All six cases were male, with a median age of 47.5 years, and all had a history of direct exposure to raw pork through hand-skin wounds. Two cases were engaged in raw pork sales, while four were non-occupationally exposed individuals. Of the six cases, four were identified as Streptococcus suis serotype 2, and two were serotype 14. The positive rate of raw pork and environmental samples was 8.45% (6/71). Field epidemiological investigation found these six outbreaks were mainly directed toward three slaughterhouses in Guangming District, Bao'an District, and Longgang District. However, different genetic typing results suggested sporadic cases. Conclusions　These six outbreaks in Shenzhen in 2023 were all sporadic individual cases, showing characteristics such as multiple-point sporadic occurrences, diversified case composition, and primarily meningitis-type clinical manifestations. Although the genetic typing of the samples varied, the epidemiological investigation indicated three slaughterhouses as potential sources, providing a scientific basis for source control. In infectious disease epidemic source tracing, gene sequencing combined with field epidemiological surveys is more conducive to determining the source of infection and the relationship between transmission.

Pelvic floor muscle training (PFMT) is the first-line intervention for non-surgical treatment of female patients with stress urinary incontinence (SUI). However, due to the particularity of the physiological position of the pelvic floor muscles, 13% to 53% of patients are unable to perform PFMT correctly after the initial visit. In view of this, scholars at China and abroad put forward some other sports rehabilitation methods and achieve good clinical results. In this paper, exercise rehabilitation methods for female SUI patients were reviewed, including PFMT, core muscle training, Pilates, yoga, physical activities, etc., in order to provide reference for medical personnel to formulate scientific and feasible exercise rehabilitation programs for female SUI patients.

Objective:To investigate the clinical characteristics of 130 children with severe SARS-CoV-2 infection in Yunnan province after the relaxation of non-pharmaceutical interventions, and analyze the risk factors for mortality.Methods:This study is a retrospective case summary that analyzed the demographic data, underlying diseases, clinical diagnoses, disease outcomes, and laboratory results of 130 children with severe COVID-19 infections admitted to nine top-tier hospitals in Yunnan Province from December 2022 to March 2023. According to the prognosis, the patients were divided into survival group and death group. The clinical and laboratory data between the two groups were compared, and the risk factors of death were evaluated. The χ2 test and Mann-Whitney U test were employed to compare between groups, while Spearman correlation test and multiple Logistic regression were used to analyze the risk factors for death. The predictive value of independent risk factors was evaluated by receiver operating characteristic curve. Results:The 130 severe patients included 80 males and 50 females with an onset age of 28.0 (4.5, 79.5) months. There were 97 cases in the survival group and 33 cases in the death group with no significant differences in gender and age between the two groups ( P>0.05). Twenty-five cases (19.2%) out of the 130 patients had underlying diseases, and the number with underlying diseases was significantly higher in death group than in survival group (36.4% (12/33) vs. 13.4%(13/97), χ2=8.36, P=0.004). The vaccination rate in the survival group was significantly higher than that in the death group (86.1% (31/36) vs. 7/17, χ2=9.38, P=0.002). A total of 42 cases (32.3%) of the 130 patients were detected to be infected with other pathogens, but there was no significant difference in the incidence of co-infection between the death group and the survival group (39.3%(13/33) vs. 29.9% (29/97), χ2=1.02, P>0.05). Among the 130 cases, severe respiratory cases were the most common 66 cases (50.8%), followed by neurological severe illnesses 34 cases (26.2%) and circulatory severe 13 cases (10%). Compared to the survival group, patients in the death group had a significantly higher levels of neutrophil, ferritin, procalcitonin, alanine aminotransferase, lactate dehydrogenase, creatine kinase isoenzyme, B-type natriuretic peptide, interleukin-6 and 10 (6.7 (4.0, 14.0) vs. 3.0 (1.6, 7.0)×10 9/L, 479 (298, 594) vs. 268 (124, 424) μg/L, 4.8 (1.7, 10.6) vs. 2.0 (1.1, 3.1) μg/L, 66 (20, 258) vs. 23 (15, 49) U/L, 464 (311, 815) vs. 304 (252, 388) g/L, 71(52, 110) vs. 24(15, 48) U/L, 484 (160, 804) vs. 154 (26, 440) ng/L, 43 (23, 102) vs. 19 (13, 27) ng/L, 216 (114, 318) vs. 86 (45, 128) ng/L, Z=-4.21, -3.67, -3.76, -3.31, -3.75, -5.74, -3.55, -4.65, -5.86, all P<0.05). The correlated indexes were performed by multivariate Logistic regression and the results showed that vaccination was a protective factor from death in severe cases ( OR=0.01, 95% CI 0-0.97, P=0.049) while pediatric sequential organ failure assessment (PSOFA) ( OR=3.31, 95% CI 1.47-7.47, P=0.004), neutrophil-to-lymphocyte ratio (NLR) ( OR=1.56, 95% CI 1.05-2.32, P=0.029) and D dimer ( OR=1.49, 95% CI 1.00-1.02, P=0.033) were independent risk factors for death (all P<0.05). The area under the curve of the three independent risk factors for predicting death were 0.86 (95% CI 0.79-0.94), 0.89 (95% CI 0.84-0.95) and 0.87 (95% CI 0.80-0.94), all P<0.001, and the cut-off values were 4.50, 3.66 and 4.69 mg/L, respectively. Conclusions:Severe SARS-CoV-2 infection can occur in children of all ages, primarily affecting the respiratory system, but can also infect the nervous system, circulatory system or other systems. Children who died had more severe inflammation, tissue damage and coagulation disorders. The elevations of PSOFA, NLR and D dimer were independent risk factors for death in severe children.

cFos is one of the most widely-studied genes in the field of neuroscience. Currently, there is no systematic database focusing on cFos in neuroscience. We developed a curated database-cFos-ANAB-a cFos-based web tool for exploring activated neurons and associated behaviors in rats and mice, comprising 398 brain nuclei and sub-nuclei, and five associated behaviors: pain, fear, feeding, aggression, and sexual behavior. Direct relationships among behaviors and nuclei (even cell types) under specific stimulating conditions were constructed based on cFos expression profiles extracted from original publications. Moreover, overlapping nuclei and sub-nuclei with potentially complex functions among different associated behaviors were emphasized, leading to results serving as important clues to the development of valid hypotheses for exploring as yet unknown circuits. Using the analysis function of cFos-ANAB, multi-layered pictures of networks and their relationships can quickly be explored depending on users' purposes. These features provide a useful tool and good reference for early exploration in neuroscience. The cFos-ANAB database is available at www.cfos-db.net .
Animals ; Fear ; Mice ; Neurons ; Proto-Oncogene Proteins c-fos ; Rats

Objective:To investigate the effect of modified cervicothoracic compression band on successful hemostasis and postoperative complications of patients with endoscopic radical thyroidectomy via breast areola approach and to provide reference for postoperative nursing of thyroid cancer.Methods:A total of 128 patients with endoscopic radical thyroidectomy via breast areola approach from October 2018 to October 2019 in the Second Affiliated Hospital of Zhejiang University School of Medicine were selected and divided into experimental group(64 cases) and control group (64 cases) by random digits table method. Patients in the control group were fixed with wide adhesive tape for hemostasis, while patients in the experimental group wore modified cervicothoracic compression band. The postoperative complications between two groups were recorded, in addition, the physical condition and comfort of patients was assessed by Edmonton Symptom Assessment System (ESAS) and Kolcaba General Comfort Questionnaire (GCQ), respectively.Results:There was no sigrificance in the score of ESAS, GCQ on the 1st day before the operation between the two groups ( P>0.05). The median score of happiness in ESAS was 6.0 points in the experimental group on the 3rd day after the operation, significantly higher than 4.0 points in the control gorup, the difference was statistically significant ( Z value was 2.919, P<0.01). The physiological, psychological, social, cultural and environmental comfort, total GCQ scores were (10.73±2.35), (24.41±4.99), (23.09±2.11), (20.17±2.32), (78.41±6.49) points in the experimental group and (8.41±2.23), (22.42±4.79), (21.22±2.73), (19.20±2.97), (71.25±6.92) points in the control group, the differences were statistically significant ( t values were 2.058-6.031, P<0.05 or 0.01). The incidence of contact dermatitis, pressure purpura and tension blister were 0, 3.1% (2/64), 0 in the experimental group and 6.3% (4/64), 12.5% (8/64), 7.8% (5/64) in the control group, the differences were statistically significant ( χ2 values were 4.129, 3.095, 5.203, P<0.05). Conclusions:Modified cervicothoracic compression band can significantly alleviate the symptoms of postoperative patients with endoscopic radical thyroidectomy, reduce postoperative complications and improve patient comfort.

Objective:To establish an efficient human intestinal trefoil factor (ITF) recombinant expression and purification strategy and to observe the effect of recombinant human ITF (rhITF) on intestinal mucosal injury and repair in burned rats and to explore the mechanism.Methods:The experimental research method was applied. New yeast expression vector pGAPZαA and yeast X33 were used to express recombinant ITF. The protein was purified by metal chelation affinity chromatography and anion and cation exchange chromatography. The rhITF was identified by non-reductive sodium dodecyl sulfate polyacrylamide gel electrophoresis (SDS-PAGE) and Western-blotting. The rhITF was mixed with pepsin solution and trypsin solution in a volume ratio of 1∶1, respectively. After mixed with pepsin solution for 0.5, 1.0, 1.5, 2.0 h and trypsin solution for 1.0, 2.0, 4.0 h, the stability of rhITF was analyzed with non-reductive SDS-PAGE. One hundred and five male BALB/c mice aged 6-8 weeks were divided into sham injury group ( n=30), burn alone group ( n=45), and burn+rhITF group ( n=30) according to the random number table. Mice in burn alone group and burn+rhITF group were inflicted with 30% total body surface area full-thickness burn on the back, while mice in sham injury group were simulated with burn. After burn, mice in burn+rhITF group were intragastrically administered with rhITF of 1 mg/kg, while mice in the other two groups were given the same amount of normal saline. At post injury hour 24, 15 mice in burn alone group were collected to prepare burn serum, which was used in the cell experiment. On post injury day (PID) 3, 5, and 7, 10 mice in each group were sacrificed to collect the small intestinal tissue. The pathological changes of the intestinal mucosa were observed by hematoxylin-eosin staining, and the activities of diamine oxidase (DAO) and lactic dehydrogenase (LDH) in the intestinal tissue were determined by spectrophotometry and enzyme linked immunosorbent assay. Three batches of human colorectal adenocarcinoma HT-29 cells were taken and divided into negative control group, 25 μg/mL rhITF group, 50 μg/mL rhITF group ( n=3), normal control group, burn serum group, burn serum+rhITF group ( n=3), and CK869 inhibitor group, CK666 inhibitor group, solvent control group ( n=2), respectively, which were dealt with the corresponding treatment. After 12 h of culture, the migration of cells were observed by Transwell experiment. Another 2 batches of HT-29 cells were taken and each batch of cells were divided into normal control group, burn serum group, and burn serum+rhITF group ( n=6). After 24 h of culture, the protein expressions of adenosine monophosphate activated protein kinase (AMPK), phosphorylated AMPK (p-AMPK), Ras related C3 botulinum toxin substrate 1 (Rac1), and actin-related protein 2/3 (Arp 2/3) complex, subunit 1B (ARPC1B) in the cells were detected by Western blotting, and the Rac1 activity of the cells was detected by activated magnetic bead pull-down test. Data were statistically analyzed with analysis of variance for factorial design, one-way analysis of variance, and Student-Newman-Keuls test. Results:Totally 82.35 mg rhITF was gathered from per litre of fermentation broth with protein purity up to 98%, and the rhITF had good antigenicity. The rhITF was stable in pepsin solution and trypsin solution, with 45% rhITF remained after 2.0 h in trypsin solution, and there was 90% rhITF remained after 4.0 h in pepsin solution. At each time point post injury, no hyperemia, or edema was observed in intestinal mucosa of mice in sham injury group, the main pathological manifestations of intestinal mucosa in mice of burn alone group were hyperemia, edema, erosion, and hemorrhage, and the main manifestations of intestinal mucosa of mice in burn+rhITF group were hyperemia and edema on PID 3 and 5, which were alleviated on PID 7. Compared with those of burn alone group, the activities of DAO and LDH in intestinal tissue of mice in sham injury group and burn+rhITF group were significantly increased on PID 3, 5, and 7 ( P<0.05 or P<0.01 ). After 12 h of culture, the number of cell migration in 25 μg/mL rhITF group was 58±12, which was obviously more than 16±5 in negative control group ( P<0.01) and obviously less than 123±9 in 50 μg/mL rhITF group ( P<0.05). After 12 h of culture, the number of cell migration in burn serum group was 60±13, which was significantly less than 143±11 in normal control group and 138±8 in burn serum+rhITF group ( P<0.05). After 12 h of culture, the number of cell migration in solvent control group was 155±9, which was significantly more than 33±5 in CK666 inhibitor group and 28±5 in CK869 inhibitor group ( P<0.01). After 24 h of culture, the protein expressions of AMPK and Rac1 of cells in burn serum group were close to those of normal control group and burn serum+rhITF group ( P?0.05), the protein expression of p-AMPK of cells in burn serum group was significantly higher than that of normal control group and burn serum+rhITF group, respectively ( P<0.05 or P<0.01), and the protein expression of ARPC1B of cells in burn serum group was significantly lower than that of normal control group and burn serum+rhITF group ( P<0.05). After 24 h of culture, the Rac1 activity of cells in burn serum group was significantly lower than that in normal control group and burn serum+rhITF group, respectively ( P<0.05 or P<0.01). Conclusions:The rhITF obtained in this study has high purity and super stability, which can resist extreme pH and hydrolysis of protease and can relieve intestinal mucosal damage in burned mice. The rhITF can promote the migration of intestinal epithelial cells and accelerate the repair of intestinal mucosa through inhibiting phosphorylation of AMPK to maintain Rac1-Arp2/3 activity.

cFos is one of the most widely-studied genes in the field of neuroscience. Currently, there is no systematic database focusing on cFos in neuroscience. We developed a curated database—cFos-ANAB—a cFos-based web tool for exploring activated neurons and associated behaviors in rats and mice, comprising 398 brain nuclei and sub-nuclei, and five associated behaviors: pain, fear, feeding, aggression, and sexual behavior. Direct relationships among behaviors and nuclei (even cell types) under specific stimulating conditions were constructed based on cFos expression profiles extracted from original publications. Moreover, overlapping nuclei and sub-nuclei with potentially complex functions among different associated behaviors were emphasized, leading to results serving as important clues to the development of valid hypotheses for exploring as yet unknown circuits. Using the analysis function of cFos-ANAB, multi-layered pictures of networks and their relationships can quickly be explored depending on users’ purposes. These features provide a useful tool and good reference for early exploration in neuroscience. The cFos-ANAB database is available at www.cfos-db.net.

The novel coronavirus 2019(2019-nCoV)was first detected from patients with pneumonia of an unknown cause in Wuhan in December 2019.It has since been confirmed as the pathogen for the new coronavirus pneumonia, recently named coronavirus disease 2019(COVID-19) by the WHO.Although the general population is commonly susceptible to the disease, infected elderly people show fast progression and severe manifestations with a high proportion in serious or critical condition as a result of compromised immunity and underlying diseases.In order to improve the quality of nursing management, reduce complications and decrease mortality for critically ill elderly patients, we assembled a national expert group with expertise in critical care nursing to write this consensus, based on a literature review and a subsequent panel discussion.The consensus covers the assessment, clinical nursing management, nursing care following hospital discharge and other aspects of care for critically ill elderly patients with COVID-19, aiming to share insights and provide guidance for clinical practice.

Objective:To investigate the effects and mechanism of mitochondrial transcription factor A (TFAM) and cytochrome c oxidase (COX) pathway in the energy production of hypoxic cardiomyocytes of rats regulated by tumor necrosis factor receptor associated protein 1 (TRAP1).Methods:The cardiomyocytes were isolated from 135 neonatal Sprague-Dawley rats (aged 1-3 d) and cultured for the following experiments. (1) Cells were collected and divided into normoxia blank control (NBC) group, hypoxia blank control (HBC) group, hypoxia+ TRAP1 over-expression control (HTOC) group, and hypoxia+ TRAP1 over-expression (HTO) group according to the random number table (the same grouping method below), with 1 bottle in each group. Cells in NBC group were cultured routinely, cells in HBC group were cultured in hypoxic condition for 6 hours after routine culture, cells in HTOC and HTO groups were respectively added with TRAP1 over-expression empty virus vector and TRAP1 over-expression adenovirus vector virus suspension for transfection for 48 hours after routine culture and then cultured in hypoxic condition for 6 hours. The protein expression of TFAM of cells in each group was detected by Western blotting. (2) Cells were collected and divided into NBC, HBC, HTOC, HTO, HTO+ TFAM interference control (HTOTIC), and HTO+ TFAM interference (HTOTI) groups, with 1 well in each group. Cells in the former 4 groups were dealt with the same methods as the corresponding groups in experiment (1). Cells in HTOTIC and HTOTI groups were respectively added with TFAM interference empty virus vector and TFAM interference adenovirus vector virus suspension for transfection for 48 hours, and the other processing methods were the same as those in HTO group. The content of ATP of cells in each group was determined by ATP determination kit and microplate reader, and the COX activity of cells in each group was determined by COX activity assay kit and microplate reader. (3) Cells were collected and divided into NBC group, normoxia+ sodium azide (NSA) group, HBC group, and hypoxia+ sodium azide (HSA) group, with 1 well in each group. Cells in NBC and HBC groups were respectively dealt with the same methods as the corresponding groups in experiment (1). Cells in NSA and HSA groups were respectively added with 32 nmol sodium azide at 30 min before experiment or hypoxia, and then cells in HSA group were cultured in hypoxic condition for 6 hours. The content of ATP was determined by the same method as above. The above three experiments were repeated for three times. Data were statistically analyzed with one-way analysis of variance and least significant difference test.Results:(1) Compared with that in NBC group, the protein expression of TFAM of cells in HBC group was significantly decreased ( P<0.01). Compared with that in HBC group or HTOC group, the protein expression of TFAM of cells in HTO group was significantly increased ( P<0.01). (2) Compared with 0.552±0.041 and 1.99±0.15 in NBC group, the COX activity (0.270±0.044) and ATP content (1.09±0.11) of cells in HBC group were significantly decreased ( P<0.01). Compared with 0.269±0.042 and 1.17±0.12 in HBC group and those in HTOC group, the COX activity (0.412±0.032 and 0.404±0.016) and ATP content (1.75±0.06 and 1.69±0.07) of cells in HTO and HTOTIC groups were significantly increased ( P<0.01). Compared with those in HTO and HTOTIC groups, the COX activity (0.261±0.036) and ATP content (1.23±0.07) of cells in HTOTI group were significantly decreased ( P<0.01). (3) Compared with that in NBC group, the ATP content of cells in NSA and NBC groups was significantly decreased ( P<0.01). Compared with that in HBC group, the ATP content of cells in HSA group was significantly decreased ( P<0.01). Conclusions:TRAP1 can increase the COX activity of cardiomyocytes by raising the expression of TFAM, and finally alleviate the impairment in energy production of cardiomyocytes caused by hypoxia.

Objective: To observe how glutamine affect the skeletal muscle membrane repair in severely burned mice through promoting the mitsugumin 53 (MG53) dimerization in skeletal muscle and to explore its functional mechanism. Methods: (1) Animal experiments. A total of 179 BALB/c male mice aged 6 to 8 weeks were divided into sham injury group (n=43), burn group (n=73) and burn+ glutamine group (n=63) according to the random number table (the same grouping method below). Mice in sham injury group were sham injured on the back, and mice in burn group and burn+ glutamine group were inflicted with 30% total body surface area full-thickness scald (hereinafter referred to as burn) on the back. Mice in burn+ glutamine group were intragastrically administered with glutamine (1 mg/kg), and the other two groups were given the same amount of amino acid solution once per day for 14 days. On post burn hour 12, 10 mice from burn group were taken for preparation of burn serum, which is used in the following cell experiments. Blood samples were collected from the hearts to prepare serum from 10 mice in sham injury group immediately after burn and from 10 mice in burn group and burn+ glutamine group on post burn day (PBD) 5, 10, and 14, respectively. And then the whole gastrocnemius muscle was harvested after the mice were sacrificed. On PBD 10, the whole flexor brevis digitorum was harvested from 6 mice in the 3 groups respectively after the mice were sacrificed. On PBD 5, 10, and 14, the whole gastrocnemius muscle tissue was harvested from another 9 mice in the 3 groups respectively after the mice were sacrificed. The mass of the whole gastrocnemius muscle of mice was weighed. The total protein content of gastrocnemius muscle of mice was detected by coomassie brilliant blue method. The repair function of myolemma of flexor brevis digitorum of mice was detected by two-photon laser fiber membrane perforating. The serum content of tumor necrosis factor-α (TNF-α) and interleukin-6 (IL-6) of mice was determined with radioimmunoassay. The expressions of MG53 dimer and monomer in gastrocnemius of mice were determined with non-reductive electrophoresis-Western blotting. The protein expressions of endoplasmic reticulum stress sign proteins CCAAT/enhancer binding protein homologous protein (CHOP) and glucose-regulated protein 78 (GRP78) in gastrocnemius of mice were determined with Western blotting. (2) Cell experiments. Mice skeletal muscle precursor cells C2C12 were cultured in vitro, and cells of the second passage were selected for the experiments. The cells were divided into normal control group, burn serum group, and burn serum+ glutamine group, with 3 dishes in each group and 1×10³ cells in each dish. Cells in normal control group were cultured with 1 mL Dulbecco′s modified Eagle medium (DMEM) with fetal bovine serum of volume fraction 10%, cells in burn serum group were cultured with 1 mL DMEM with burn serum of volume fraction 10%, and cells in burn serum+ glutamine group were cultured with 1 mL DMEM with burn serum of volume fraction 10% and 4 μL glutamine with a final molar concentration of 8 mmol/L. After 24 hours of culturing, the repair function of myocyte membrane after differentiation of skeletal muscle precursor cells in mice was detected with the same method before. Another cells were grouped and cultured as before, with 3 wells in each group and 1×10⁵ cells in each well. After 24 hours of culturing, the expressions of MG53 dimer and monomer and endoplasmic reticulum stress marker proteins in the cells were detected as before. Data were processed with analysis of variance of factorial design, one-way analysis of variance, least significant difference t test, and Student Newman Keuls test. Results: Animal experiments. (1) Compared with those in sham injury group, the mass and total protein content of gastrocnemius muscle of mice in burn group were significantly decreased on PBD 5, 10, and 14 (P<0.05). Compared with those in burn group, the mass and total protein content of gastrocnemius muscle of mice in burn+ glutamine group were significantly increased on PBD 5, 10, and 14 (P<0.05). (2) Compared with that in sham injury group (0.9±0.4), the fluorescence intensity of FM1-43 in myofiber of mice in burn group (7.8±0.4) was significantly increased on PBD 10 (t=7.75, P<0.05). Compared with that in burn group, the fluorescence intensity of FM1-43 in myofiber of mice in burn+ glutamine group (4.0±0.4) was significantly decreased on PBD 10 (t=-4.31, P<0.05). (3) Compared with that in sham injury group, the serum content of TNF-α and IL-6 of mice in burn group was significantly increased on PBD 5, 10, and 14 (P<0.05). Compared with that in burn group, the serum content of TNF-α and IL-6 of mice in burn+ glutamine group was significantly decreased on PBD 5, 10, and 14 (P<0.05). (4) Compared with 56.97±2.82, 44.89±4.72, 42.46±1.06, 14.26±0.99, 62.36±2.74, and 29.45±0.84 in sham injury group, the expressions of MG53 dimer and monomer in gastrocnemius of mice were significantly decreased in burn group on PBD 5, 10, and 14 (6.16±0.25, 26.09±1.22, 28.86±1.53, 5.63±0.25, 26.74±0.79, 4.41±0.52, P<0.05). Compared with those in burn group, the expression of MG53 dimer of gastrocnemius of mice in burn+ glutamine group was significantly increased on PBD 10 and 14 (36.79±1.44, 43.96±1.62), and the expression of MG53 monomer of gastrocnemius muscle of mice in burn+ glutamine group was significantly increased on PBD 14 (13.16±2.17, P<0.05). Compared with those in sham injury group, the protein expressions of CHOP and GRP78 in gastrocnemius muscle of mice in burn group were significantly elevated on PBD 5, 10, and 14 (P<0.05). Compared with those in burn group, the protein expressions of CHOP and GRP78 in gastrocnemius of mice in burn+ glutamine group were significantly reduced on PBD 5, 10 (P<0.05). Cell experiments. (1) Compared with that in normal control group (1.76±0.25), the fluorescence intensity of FM1-43 in cells in burn serum group (9.46±1.22) was significantly increased after 24 hours of culturing (t=12.28, P<0.05). Compared with that in burn serum group, the fluorescence intensity of FM1-43 in cells in burn serum+ glutamine group (4.71±0.45) was significantly decreased after 24 hours of culturing (t=-7.59, P<0.05). (2) The expressions of MG53 monomer of cells were similar in normal control group, burn serum group, and burn+ glutamine group after 24 hours of culturing (P>0.05). Compared with 58.5±1.8 in normal control group, the expression of MG53 dimer of cells in burn serum group was significantly decreased after 24 hours of culturing (14.1±1.4, P<0.05). Compared with that in burn serum group, the expression of MG53 dimer of cells in burn serum+ glutamine group was significantly increased after 24 hours of culturing (30.9±0.6, P<0.05). Compared with those in normal control group, the protein expressions of CHOP and GRP78 of cells were significantly elevated in burn serum group after 24 hours of culturing (P<0.05). Compared with those in burn serum group, the protein expressions of CHOP and GRP78 of cells were significantly reduced in burn serum+ glutamine group after 24 hours of culturing (P<0.05). Conclusions Glutamine can promote MG53 dimerization by alleviating endoplasmic reticulum stress in severely burned mice. Thus it can accelerate skeletal muscle membrane repair, reduce the local inflammatory reaction of skeletal muscle and consumption of skeletal muscle.