Objective: To characterize the prevalence and genomic epidemiology of Vibrio parahaemolyticus from acute diarrheal patients in Shenzhen City from 2013 to 2021. Methods: Based on the Shenzhen Infectious Diarrhea Surveillance System, acute diarrheal patients were actively monitored in sentinel hospitals from 2013 to 2021. Whole-genome sequencing (WGS) of Vibrio parahaemolyticus isolates was performed, and the genomic population structure, serotypes, virulence genes and multilocus sequence typing were analyzed. Outbreak clusters from 2019 to 2021 were explored based on single-nucleotide polymorphism analysis. Results: A total of 48 623 acute diarrhea cases were monitored in 15 sentinel hospitals from 2013 to 2021, and 1 135 Vibrio parahaemolyticus strains were isolated, with a positive isolation rate of 2.3%. Qualified whole-genome sequencing data of 852 isolates were obtained. Eighty-nine serotypes, 21 known ST types and 5 new ST types were identified by sequence analysis, and 93.2% of strains were detected with toxin profile of tdh+trh-. 8 clonal groups (CGs) were captured, with CG3 as the absolute predominance, followed by CG189. The CG3 group was dominated by O3:K6 serotype and ST3 sequence type, while CG189 group was mainly O4:KUT, O4:K8 serotypes and ST189a and ST189 type. A total of 13 clusters were identified, containing 154 cases. About 30 outbreak clusters with 29 outbreak clusters caused by CG3 strains from 2019 to 2021. Conclusion: Vibrio parahaemolyticus is a major pathogen of acute infectious diarrhea in Shenzhen City, with diverse population structures. CG3 and CG189 have been prevalent and predominant in Shenzhen City for a long time. Scattered outbreaks and persistent sources of contamination ignored by traditional methods could be captured by WGS analysis. Tracing the source of epidemic clone groups and taking precise prevention and control measures are expected to significantly reduce the burden of diarrhea diseases caused by Vibrio parahaemolyticus infection in Shenzhen City.
Humans ; Vibrio parahaemolyticus/genetics* ; Diarrhea/epidemiology* ; Foodborne Diseases/epidemiology* ; Serogroup ; Genomics ; Dysentery ; Vibrio Infections/epidemiology* ; Serotyping

AIM: To investigate the effect of different degrees of traction power on the survival rate of retinal ganglion cells(RGCs)and nerve conduction in rats, and to discuss the effect of autophagy level of RGCs on the above parameters.METHODS: A total of 30 healthy male Sprague-Dawley(SD)rats were randomly divided into empty group, sham-operation group, 0.15N, 0.3N and 0.6N group, with 6 rats in each group.Modeling group was performed the transverse quantitative traction to make a rat model of optic nerve injury. In addition, rats in empty group were not operated and rats in sham-operation group only got optic nerve exposed. Flash visual evoked potentials(f-VEP)were performed respectively on 1 and 3d after modeling.The survival of retinal ganglion cells was observed by Brn-3a staining at 3d after modeling, autophagy bodies were observed by transmission electron microscope, and the expression level of LC3B II/I protein was detected by Western blotting.RESULTS: Compared with sham-operation group, the f-VEP P2 peak was significantly delayed and the amplitude reduced at 3d after modeling. In addition, the survival rate of RGCs was decreased, and the expression level of LC3B II/I protein were decreased. Autophagy bodies were observed in the retinal tissue of rats in all groups.CONCLUSION: Optic nerve traction reduced early retinal autophagy level, death of RGCs and corresponding nerve conduction dysfunction in rats,and different traction caused different degrees of injury. In addition,there was a correlation between the autophagy level and the survival of RGCs.

Objective: To observe the clinical efficacy of DZWJY-1 type electronic moxibustion apparatus and traditional moxibustion in treating knee osteoarthritis (KOA). Methods: A total of 76 eligible patients were randomized into an electronic moxibustion apparatus group and a traditional moxibustion group, with 38 cases in each group. The electronic moxibustion apparatus group was intervened by DZWJY-1 type electronic moxibustion apparatus, and the traditional moxibustion group received moxa stick moxibustion for treatment. Neixiyan (EX-LE 4), Dubi (ST 35), Xuehai (SP 10) and Liangqiu (ST 34) were selected for both groups and the treatment was conducted 3 times a week for a total of 12 times. The visual analog scale (VAS) and the Western Ontario and McMaster Universities osteoarthritis index (WOMAC) scores were observed before treatment and after 6 and 12 sessions of treatment, respectively. Results: There were 4 dropout cases in the traditional moxibustion group. Therefore, this trial had 72 valid cases, including 38 cases in the electronic moxibustion apparatus group and 34 cases in the traditional moxibustion group, the differences in the baseline data between the two groups were statistically insignificant (P>0.05). After 6 and 12 sessions of treatment, the VAS scores decreased significantly with the increase of treatment sessions in both groups (all P<0.01), and the betweengroup differences were statistically insignificant at the same time points (both P>0.05). The pain intensity was evaluated using the weighted value of VAS score. The markedly effective rate was 47.4％ and the total effective rate was 89.5％ in the electronic moxibustion apparatus group, versus 50.0％ and 94.1％ in the traditional moxibustion group, and the betweengroup differences were statistically insignificant (both P>0.05). After 6 and 12 sessions of treatment, the total score and the component scores including pain, stiffness and difficulty moving in the WOMAC decreased significantly with the increase of treatment sessions in both groups (all P<0.01), and the between-group differences were statistically insignificant (all P>0.05). Conclusion: Electronic moxibustion apparatus and traditional moxibustion both are effective in reducing joint pain and improving joint function in KOA patients, and they are equivalent comparing the clinical efficacy.

Objective: To observe the effect of modified Chaihu Shugantang on the expression of miRNA-204 in hippocampus of epileptic mice, and to explore its mechanism of neuroprotection. Method: The sixty mice were randomly divided into 6 groups:normal group, model group (pilocarpine 180 mg·kg^-1), and modified Chaihu Shugantang group (7 g·kg^-1·d^-1), modified Chaihu Shugantang+miRNA-204 mimic group (7 g·kg^-1·d^-1+ 2 μL), modified Chaihu Shugantang+miRNA-204 inhibitor group (7 g·kg^-1·d^-1+2 μL), carbamazepine group (30 mg·kg^-1·d^-1),each was given intragastric administration for 2 weeks,using pilocarpine to cause epilepsy in mice, respectively, add flavor to Bupleurum after intragastric administration, inhibition and overexpression of miRNA-204, the mice were sacrificed and their hippocampus tissues were harvested.The indicators of each group were observed, Real-time quantitative PCR detecting system (Real-time PCR) was used to detect mouse hippocampal miRNA-204 expression, Western blot analysis of autophagy-related protein microtubule-associated protein light chain 3 (LC3), autophagy-associated marker protein 7 (ATG7) expression, hematoxylin pathological condition of hippocampus in each group was observed by hematoxylin-eosin(HE)staining.The autophagy of hippocampus in each group was observed by transmission electron microscopy. Result: Compared with normal group, the expression of miRNA-204 was significantly decreased in model group (P<0.01), the pathological changes in the hippocampal C1 area were the most obvious, the expression of ATG7, LC3Ⅱ/LC3Ⅰ was increased (P<0.01), and the autophagy was small. Compared with model group, the expression of miRNA-204 in the hippocampus of the modified Chaihu Shugantang group was increased (P<0.05), the pathological changes in the hippocampal C1 area were alleviated, the expression of ATG7, LC3Ⅱ/LC3Ⅰ was decreased (P<0.05), and the autophagy was small. The number of body decreased,the expression of miRNA-204 in hippocampus of modified Chaihu Shugantang+miRNA-204 mimic group was significantly increased (P<0.01), the pathological changes in hippocampal C1 area were the lightest, and the expression of ATG7, LC3Ⅱ/LC3I was decreased (P<0.01), the number of autophagosomes was the least.Compared with modified Chaihu Shugantang group, the above-mentioned indicators of modified Chaihu Shugantang+miRNA-204 inhibitor group had the same change trend and the change range decreased (P<0.05). Conclusion: Modified Chaihu Shugantang can improve the pathological changes of hippocampus in mice with epilepsy and play a neuroprotective role. The mechanism may be to increase the expression of miRNA-204 in hippocampus of mice with epilepsy, inhibit excessive autophagy of neurons and reduce apoptosis.

OBJECTIVE: To study the clinical efficacy of interactive group sandplay versus individual sandplay in the treatment of preschool children with autism spectrum disorder (ASD). METHODS: A total of 80 ASD children, aged 4-6 years, were enrolled and randomly divided into experimental and control groups, with 40 children in each group. The children in the experimental group joined group sandplay with normal children at a ratio of 1: 3, and those in the control group were treated with individual sandplay. The Aberrant Behavior Checklist (ABC) and Autism Treatment Evaluation Checklist (ATEC) were used to evaluate the treatment outcome after three months of intervention. RESULTS: There were 33 children in the experimental group and 28 in the control group. After three months of intervention, the experimental group had significant reductions in the scores of irritability, social withdrawal, and stereotypic behavior and the total score of the ABC scale (P<0.05), and the control group had significant reductions in the scores of behavior and inappropriate speech and the total score of the ABC scale (P<0.05). Compared with the control group, the experimental group had significantly greater improvements in the score of social withdrawal and the total score of the ABC scale after three months of intervention (P<0.05). After three months of intervention, the experimental group had significant reductions in the scores of sociability, sensory and cognitive awareness, and physical/health behavior and the total score of the ATEC scale (P<0.05), and the control group had significant reductions in the scores of speech, sociability, and physical/health behavior and the total score of the ATEC scale (P<0.05). Compared with the control group, the experimental group had significantly greater improvements in the scores of speech, sociability, and sensory and cognitive awareness and the total score of the ATEC scale after intervention (P<0.01). Compared with the control group, the experimental group also had significantly greater improvements in eye contact and sand stereotyped arrangement (P<0.05). CONCLUSIONS Both interactive group sandplay and individual sandplay are effective in the treatment of ASD in preschool children. Interactive group sandplay is better than individual sandplay in the treatment of ASD, with significant improvements in sociability, emotion and stereotypic behavior.
Autism Spectrum Disorder ; therapy ; Child ; Child, Preschool ; Emotions ; Humans ; Play Therapy ; Treatment Outcome

Three new prenylated stilbenes, named as cajanusins A-C (1-3), and one new natural product cajanusin D (4), along with six known derivatives (5-10) were isolated from the leaves of Cajanus cajan. Their structures were fully elucidated by means of extensive spectroscopic methods and comparison with data in the reported literatures. The new compounds of 1 and 2 were evaluated for in vitro cytotoxic activities against a panel of human cancer cell lines.

Snake venom has special pharmacological activities and contains a array of small polypeptides that can antagonize integrins, therefore called disintegrins. Disintegrins can block integrin-dependent platelet aggregation, tumor growth, and tumor metastasis. A disintegrin fraction was isolated and purified from the venom of snake Gloydius brevicaudus (GBV). Its physical and chemical properties were characterized, and its biological activities were investigated. The crude venom of GBV were isolated by Superdex 75 gel filtration chromatography. The anti-platelet aggregation activity of the fractions was screened by the Born method. The fraction that shown anti-platelet activity was further purified with Sephadex G-25 gel filtration, DEAE Sepharose Fast Flow ion exchange chromatography, and Lichrospher C18 reversed-phase chromatography respectively. The purity of the active component was analyzed with SDS-PAGE (Tris-Tricine system) and high-performance liquid-phase chromatography (HPLC), with protein concentration determined by the Bradford method. The molecular weight was evaluated by the gel imaging method and mass spectrometry, and the isoelectric point was measured by disc isoelectric focusing electrophoresis. The protease activity was measured with the Rick method. The phospholipase A activity was determined by the automatic potentiometric titration method. Amino acid sequencing results were subjected to homology comparison using the BLAST program. Seven fractions (Ⅰ-Ⅶ) were isolated from GBV by gel filtration chromatography on Superdex 75 column. The fraction Ⅳ inhibited the platelet aggregation induced by ADP with molecular weight lower than 10 000 Da, suggesting a disintegrin component. A disintegrin named GBV-Ⅳ4 was purified from the fraction by Sephadex G-25 gel filtration, DEAE Sepharose Fast Flow ion-exchange and Lichrospher C18 reverse chromatography. It was homogeneous shown as a single band on SDS-polyacrylmide gel electrophoresis (SDS-PAGE, Tris-Tricine system) with molecular weight 8 746 Da as calculated by Image Master VDS system. The isoelectric point of GBV-Ⅳ4 was 6.3 by disc polyacrylamide gel electrophoresis. GBV-Ⅳ4 exhibited no detectable phospholipase A₂ (PLA₂) activity with the pH-stat technique or proteinase activity according to the method of Rick. GBV-Ⅳ4 is composed of 70 amino acids with RGD (Arg-Gly-Asp) active region and a molecular weight of 7 442 Dalton as assayed by Mass Spectrography. Characterization of GBV-Ⅳ4 is consistent with meta-chain disintegrin (70 amino acid sequence, six pairs of disulfide bond). Retrieved by Genbank, GBV-Ⅳ4 has high homology with other disintegrins. We concluded that GBV-Ⅳ4 is a novel disintegrin contained RGD. GBV-Ⅳ4 showed dose-dependent inhibition of ADP- or thrombin-induced platelet aggregation with IC₅₀ 0.339 or 0.577 μg·mL^-1 respectively. In conclusion, a new disintegrin derived from the GBV snake venom and named GBV-Ⅳ4 containing RGD tripeptide sequence could inhibit platelet aggregation.

Wu-tou decoction (WTD) and Baihu-Guizhi decoction (BHGZD) as described in the Synopsis of the Golden Chamber have been used extensively for the treatment of rheumatoid arthritis (RA) with apparent therapeutic efficacy. However, characteristics of pharmacological effects and their underlying molecular mechanisms have not been fully elucidated due to a lack of appropriate scientific methodology. In the current study, we performed an integrative approach applying gene expression profiling and network analysis to examine the therapeutic effects and molecular mechanisms of WTD and BHGZD based on adjuvant-induced arthritis (AIA) animal model. Results demonstrated that both WTD and BHGZD could relieve the severity of arthritis in AIA rats, while the significant differences were observed in the changes of the withdrawal response scores and latency time of AIA rats treated with WTD and BHGZD. Mechanistically, our network pharmacology-based investigation demonstrated that the major candidate targets of WTD and BHGZD were significantly associated with several inflammation-immune regulatory pathways, such as Toll-like receptor signaling pathway, T cell receptor signaling pathway, cytokine-cytokine receptor interaction, chemokine signaling pathway, B cell receptor signaling pathway, antigen processing and presentation, Fc epsilon RI signaling pathway, natural killer cell mediated cytotoxicity, as well as leukocyte transendothelial migration. In particular, the major candidate targets of WTD were also involved in the regulation of hormone and energy metabolism, which might be imbalanced during RA progression. In conclusion, the current study revealed differences and similarities regarding the effects and network regulatory mechanisms of WTD and BHGZD. These findings may present a scientific basis for elucidation of mechanisms by which WTD and BHGZD alleviates RA.

Objective To investigate the changes and clinical significance of serum lactate dehydrogenase (LDH),creatine kinase (CK),glutamate pyruvate transaminase (AST),and cerebrospinal fluid lactate dehydrogenase (CSF LDH) in adult patients with acute central nervous system infection.Methods The levels of myocardial enzymes (AST,LDH,and CK) in serum of 96 adult patients with acute intracranial infection in 7days and 39 healthy people were measured by Beckman automatic biochemical analyzer and enzyme rate assay,and CSF LDH level in 96 patients were measured simultaneously.Results (1) The serum myocardial enzymes (LDH,CK,and AST) of intracranial infection group (47 cases with viral encephalitis,30 cases with tuberculous meningitis,and 19 cases with purulent encephalitis) were significantly higher than those of normal control group (P ＜0.01).(2)The myocardial enzymes (LDH,and AST ) of patients with cerebral functional disorder were significantly higher than those of patients with normal cerebral function (P ＜0.05).(3)The levels of serum AST,LDH,and CK in the virus encephalitis group,serum AST and LDH in the purulent encephalitis group,and serum LDH in the tuberculous meningitis group were significantly higher than those in the control group (P ＜ 0.01).The CSF LDH level in the viral meningitis group was prominently lower than that in the tuberculous encephalitis group and purulent encephalitis group,respectively (P ＜0.01).(4) No correlations were found between CSF LDH and serum myocardial enzymes (P ＞0.05).Conclusions (1)There is significant change in the levels of serum LDH,CK,AST,and CSF LDH of adult patients with acute intracranial infection,especially in infected patients with cerebral functional disorder,and the change of LDH is the most obvious.(2)The levels of serum myocardial enzymes and CSF LDH are helpful to the differential diagnosis of intracranial infection in early stage,and judging the severity of the illness.