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AIM: To analyze the clinical characteristics and antibiotic sensitivity of traumatic endophthalmitis caused by Bacillus cereus and discuss the early diagnosis and treatment measures.METHODS: The data of 15 patients(15 eyes)with Bacillus cereus endophthalmitis admitted to the Eye Trauma Center of Shaanxi Provincial Eye Hospital from January 2019 to December 2021 were collected. The injury time, injury condition, preoperative visual acuity, corrected visual acuity in the last follow-up, operation method, bacterial culture and drug sensitivity test results were recorded.RESULTS: Among the 15 patients(15 eyes), 5 eyes with simple corneal perforating wound were treated with wound debridement and suture combined with intraocular antibiotic injection. And another 10 eyes with penetrating injuries combined with traumatic cataract and intraocular foreign bodies were treated with debridement, cataract extraction, removal of intraocular foreign bodies, vitrectomy combined with silicone oil tamponade and intraocular antibiotic injection. Among the 15 patients, 11 patients(73%)were treated effectively and the eyeball was preserved, and 4 patients(27%)were treated ineffectively and ocular evisceration was performed. Among the 11 patients with eyeball retention, 1(9%)had decreased vision, 1(9%)had unchanged vision, 4(36%)had improved vision by 1 level, and 5(45%)had improved vision by 2 levels, and the postoperative visual acuity was significantly improved. Correlation analysis showed that the course of disease was negatively correlated with corrected visual acuity(rs=-0.762, P=0.001). The cultures of vitreous humor and aqueous humor samples of patients were all grown in Bacillus cereus, and susceptibility tests were sensitive to vancomycin.CONCLUSIONS: Vancomycin is an effective drug for the treatment of Bacillus cereus endophthalmitis. Vitrectomy combined with silicone oil tamponade and intravitreal injection of vancomycin are effective method for the treatment of Bacillus cereus endophthalmitis.
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Many efforts have been made to understand excitotoxicity and develop neuroprotectants for the therapy of ischemic stroke. The narrow treatment time window is still to be solved. Given that the ischemic core expanded over days, treatment with an extended time window is anticipated. Bestrophin 1 (BEST1) belongs to a bestrophin family of calcium-activated chloride channels. We revealed an increase in neuronal BEST1 expression and function within the peri-infarct from 8 to 48 h after ischemic stroke in mice. Interfering the protein expression or inhibiting the channel function of BEST1 by genetic manipulation displayed neuroprotective effects and improved motor functional deficits. Using electrophysiological recordings, we demonstrated that extrasynaptic glutamate release through BEST1 channel resulted in delayed excitotoxicity. Finally, we confirmed the therapeutic efficacy of pharmacological inhibition of BEST1 during 6-72 h post-ischemia in rodents. This delayed treatment prevented the expansion of infarct volume and the exacerbation of neurological functions. Our study identifies the glutamate-releasing BEST1 channel as a potential therapeutic target against ischemic stroke with a wide time window.
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Objective@#To investigate the breakfast consumption of middle school students and to analyze its relationship with physical fitness, so as to provide reference for improving physical fitness of middle school students.@*Methods@#A total of 2 732 middle school students from Shangrao City were selected in September 2021 by random cluster stratified sampling. The breakfast consumption behaviors of middle school students were investigated by questionnaire, and the general information, family information and other lifestyle behaviors were collected. The physical fitness test includes grip strength, standing long jump, 1 minute sit up, sit forward bend, 50 m run and 20 m shuttle run test (20 m SRT) to evaluate the strength, flexibility, speed and endurance of middle school students. χ 2 tests were used to compare the correlation between different demographic characteristics, breakfast behavior and physical fitness,and Logistic regression analysis was used to infer the correlation strength between breakfast behavior and physical fitness.@*Results@#The detection rate of physical fitness failure among middle school students was 21.5%. There were statistically significant differences between breakfast frequency and grip strength and 20 m SRT( χ 2=8.27, 13.90, P < 0.05 ). Logistic regression analysis results showed that 20 m SRT was positively correlated with breakfast frequency (sometimes eat breakfast, OR =1.51, skip or occasionally eat breakfast OR =2.08, P <0.05).@*Conclusion@#The low frequency of breakfast consumption of middle school students is associated with low performance on 20 m SRT. Schools and families should pay attention to the breakfast consumption of middle school students to ensure adequate daily nutrition intake.
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The eukaryotic genome is folded into higher-order conformation accompanied with constrained dynamics for coordinated genome functions. However, the molecular machinery underlying these hierarchically organized three-dimensional (3D) chromatin architecture and dynamics remains poorly understood. Here by combining imaging and sequencing, we studied the role of lamin B1 in chromatin architecture and dynamics. We found that lamin B1 depletion leads to detachment of lamina-associated domains (LADs) from the nuclear periphery accompanied with global chromatin redistribution and decompaction. Consequently, the inter-chromosomal as well as inter-compartment interactions are increased, but the structure of topologically associating domains (TADs) is not affected. Using live-cell genomic loci tracking, we further proved that depletion of lamin B1 leads to increased chromatin dynamics, owing to chromatin decompaction and redistribution toward nucleoplasm. Taken together, our data suggest that lamin B1 and chromatin interactions at the nuclear periphery promote LAD maintenance, chromatin compaction, genomic compartmentalization into chromosome territories and A/B compartments and confine chromatin dynamics, supporting their crucial roles in chromatin higher-order structure and chromatin dynamics.
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Humans , Chromatin , Chromosomes , Genome , Lamin Type B/geneticsABSTRACT
Signal transducer and activator of transcription (STAT) is a family of cytoplasmic transcription factors including seven proteins of STAT-1, -2, -3, -4, -5A, -5B and -6. The genes encoding the STAT family are located on are located on chromosome 2 (STAT1 and STAT4), chromosome 12 (STAT2 and STAT6) and chromosome 17 (STAT3, STAT5A and STAT5B). Among these seven proteins, STAT3 and STAT5 have the strongest correlation with tumor progression, and ionizing radiation can affect STAT3 level. Continuous activation of STAT3 can regulate a variety of functions, including cell proliferation, cell cycle progression, apoptosis, angiogenesis and immune escape. STAT3 is highly complex in its biological function and activator action. Therefore, it is of great significance to further study the biological function and signaling pathway of STAT3.
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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 .
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Animals , Mice , Rats , Fear , Neurons , Proto-Oncogene Proteins c-fosABSTRACT
The paraventricular nucleus of the thalamus (PVT), which serves as a hub, receives dense projections from the medial prefrontal cortex (mPFC) and projects to the lateral division of central amygdala (CeL). The infralimbic (IL) cortex plays a crucial role in encoding and recalling fear extinction memory. Here, we found that neurons in the PVT and IL were strongly activated during fear extinction retrieval. Silencing PVT neurons inhibited extinction retrieval at recent time point (24 h after extinction), while activating them promoted extinction retrieval at remote time point (7 d after extinction), suggesting a critical role of the PVT in extinction retrieval. In the mPFC-PVT circuit, projections from IL rather than prelimbic cortex to the PVT were dominant, and disrupting the IL-PVT projection suppressed extinction retrieval. Moreover, the axons of PVT neurons preferentially projected to the CeL. Silencing the PVT-CeL circuit also suppressed extinction retrieval. Together, our findings reveal a new neural circuit for fear extinction retrieval outside the classical IL-amygdala circuit.
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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.
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OBJECTIVE: To observe the effect of medicated thread moxibustion of Zhuang Minority medicine on helper T cell 17 (Th17)/ Interleukin-17F(IL-17F) signaling pathway in ulcerative colitis (UC) rats, so as to explore its mechanisms underlying improvement of UC. METHODS: Forty male SD rats were randomly divided into normal control, model, medication and medicated thread moxibustion (MTM) groups, with 10 rats in each group. The UC model was induced by free drinking of 4% dextran sulfate sodium (DSS) for 10 d. After successful modeling, rats of the medication group were treated by gavage of salazosulfapyridine (SASP). Medicated thread moxibustion was applied to unilateral "Tianshu" (ST25) and "Qihai" (CV6) alternatively for rats of the MTM group, once daily for 14 d. The body mass, stool shape, and fecal occult test were recorded and conducted daily to perform disease activity index (DAI) score. H．E. staining was used to display pathological changes of the colon tissue. The Th17 cells and IL-17F and retinoic acid related orphan receptor γ t (ROR-γt) in the colon tissue were detected by flow cytometry, and enzyme-linked immunosorbent assay (ELISA), respectively, and the expression levels of RORγt and IL-17F mRNA in colon tissue were detected by quantitive real-time PCR. RESULTS: After modeling, the DAI score, colonic Th17 percentage, RORγt and IL-17F contents, and RORγt and IL-17F mRNA expression were significantly increased in the model group in contrast to the normal control group (P0.05, except RORγt and IL-17F mRNA expression). H．E. staining showed disappearance of goblet cells, infiltration of a large number of inflammatory cells, exfoliation of the epithelial tissue and edema of colonic mucosal in rats of the model group, which was relatively milder in both medication and MTM groups. CONCLUSION: Medicated thread moxibustion of Zhuang Minority medicine can reduce the inflammatory damage of colon tissue in UC rats, which is associated with its effects in suppressing the expression of RORγt, production of Th17 cells, and secretion of pro-inflammatory factor IL-17F in colon tissue.
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Objective To study the clinical use of indocyanine green (ICG) fluorescence imaging in laparoscopic liver surgery.Methods The clinical and pathological data of 68 patients who underwent laparoscopic hepatectomy using the ICG fluorescence imaging technique during the study period from September 2016 to October 2018 in Zhongnan Hospital,Wuhan University were retrospectively analyzed.Analysis was carried out on the surgical methods,fluorescence navigation methods,ICG injection time and dose,tumor characteristics,and pathological studies of the resected specimens.Results Of 68 patients,3 patients were converted to open surgery,and the remaining 65 patients completed the ICG fluorescence laparoscopic hepatectomy.Thirty-two of these 65 patients underwent ICG fluorescent guided laparoscopic anatomical resection of lower hepatic segment / hepatic hemilivers (positive staining in 17 patients,negative staining in 15 patients),with 19 patients successfully staining with ICG(19 / 32,59.4％).Postoperative histopathology showed primary hepatic solid tumors (n=31),secondary liver tumors (n=12),hepatic cysts (n=4),hepatic hemangiomas (n =5),hepatolithiasis (n =12) and hepatic focal nodular hyperplasia (n =1).These lesions were combined with hepatitis B liver fibrosis in 29 patients.Conclusions ICG fluorescence imaging positively impacted on laparoscopic liver surgery.Proper preoperative ICG injection was helpful for the identification,localization and intraoperative surgical guidance of tumors,especially for patients with deep-seated and central tumors.As a consequence,oncological and surgical safety of laparoscopic liver surgery was improved.Targeted visualization of liver segments and surgical navigation using intraoperative ICG injections facilitated accurate and precise resection of anatomical liver segments or hemi-hepatectomies.The use of intraoperative ICG fluorescence technology for hepatic hemangioma,hepatic cyst,intrahepatic bile duct stones and other benign liver lesions,helped to improve safety of surgery.
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Rv2742 is a novel gene identified from Mycobacterium tuberculosis H37Rv by the proteogenomics strategy. The aim of this study was to establish a system of soluble expression and purification of the missing protein Rv2742 in M. tuberculosis H37Rv, to provide reference for further research on the biological function of Rv2742. The soluble protein was not successfully induced by prokaryotic expression vectors pGEX-4T-2-Rv2742, pET-32a-Rv2742, pET-28a-Rv2742 and pMAL-c2X-Rv2742. After the codon of novel gene Rv2742 was optimized according to E. coli codon usage frequency, only the recombinant strain containing plasmid pMAL-c2X-Rv2742 could produce soluble products of Rv2742 encoding gene. In addition, the expression effects of the desired fusion protein were also analyzed under different conditions including hosts, culture temperatures and IPTG concentrations. The optimum expression conditions were as follows: Rosetta (DE3) host, 16 °C culture temperature and 0.5 mmol/L IPTG. After being purified by affinity chromatography with amylose resin, the fusion protein sequence was confirmed by LC-MS/MS. These results indicated that the novel gene Rv2742 product could be successfully induced and expressed in a soluble form by the expression system pMAL-c2X with MBP tag. Our findings provide reference for studies on potential interaction and immunogenicity.
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Chromatography, Liquid , Cloning, Molecular , Escherichia coli , Mycobacterium tuberculosis , Genetics , Recombinant Fusion Proteins , Tandem Mass SpectrometryABSTRACT
Intralesional injection is a common method among various therapeutic choices for the treatment of Infantile Hemangiomas. This article reviews the clinical application of intralesional injections for infantile hemangiomas, discusses indications for intralesional injection treatment and evaluates the safety and efficacy of different injected drugs.
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Objective@#To investigate the effects of beta-blocker, propranolol and timolol on the proliferation and apoptosis of hemangioma stem cells (HemSCs).@*Methods@#Different concentrations(3, 30, 90, 150 μmol/L)of propranolol and timolol were added in HemSCs culture respectively for 24, 48 and 72 h, and cell proliferation and apoptosis were detected by flow cytometry. Experimental data were analyzed using SPSS 19.0 software. Statistically significance was determined using Student′s t test. Values of P<0.05 were considered statistically significant.@*Results@#Proliferation assay indicated that different concentrations of propranolol and timolol could inhibit HemSCs proliferation, and inhibition degree increased with increasing concentration. However, the effects of propranolol was slightly stronger than that of timolol at high concentrations (30, 90 and 150 μmol/L), but the opposite was observed at low concentration(3 μmol/L)(P<0.05). The results of apoptosis experiment showed that timolol had stronger effect than propranolol in promoting apoptosis at low concentrations (3 and 30 μmol/L), which was 13.7% and 1.1% higher, respectively.@*Conclusions@#Inhibiting HemSCs proliferation and promoting apoptosis may be one of the mechanisms of propranolol and timolol in treating infantile hemangioma.The specific effects of both varies with the concentration and time.
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Objective@#To compare the safety and efficacy of pulsed dye laser (PDL) with different sessios for the East Asian infants with port-wine stains(PWS).@*Methods@#From September 2016 to September 2017, 24 East Asian infants with untreated PWS, who met the standards of enrollment, received seven treatments by PDL at 2-week intervals and three treatments at 6-week intervals at adjacent locations in each patient 2 months after final treatment. The efficacy outcome was compared with Wilcoxon signed-rank test, while the safety was compared using Fisher′s exact test.@*Results@#Of the 24 patients, 20 completed study. Seven patients had multiple sites, given a total of 62 treated PWS sites. Among the patients, 18 had lesions on the face and 2 on the extremities. The average blanching rate was (43.71 ± 27.16) % and (43.29 ± 31.58) % for PDL treatments with 7- and 3- sessions, respectively (P>0.05). The result was consistent with independent observer assessment judging that the result of 7 laser treatments was equally with that of 3 treatments (r=0.416, P=0.0008). The average grade was 3.58 ± 1.21 and 3.53 ± 1.16 for 7- and 3-sessions. The patients treated with 7-sessions developed a little more side effects than 3-sessions, including residue purpura, pigmentation changes, eczema and dermatitis.@*Conclusions@#After three treatments of PDL, the efficacy may not necessarily increased by more frequent treatments for East Asian infantile PWS.
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Objective To investigate an operative method of autologous fat transfer to retro-orbicularis oculi fat (ROOF) through upper blepharoplasty incision for correction of superior sulcus deformity and dermatochalasis,and to evaluate the efficacy and safety of the method.Methods ROOF lies in the lateral supraorbital area.Autologous fat transfer to ROOF through upper blepharoplasty incision was performed in patients selected by examination.The efficacy and safety were evaluated by follow-up study.Results From March 2013 to June 2017,23 selected patients received the treatment with 3 months to 50 months (mean,20.4 months) follow-up.The amount of fat graft for each palpebra was 0.6 to 2.0 ml,and the mean graft amount was 1.4 ml.The superior sulcus deformity improved significantly in 22 (95.7％) cases.All 23 cases achieved significant improvement of dermatochalasis.22 (95.7％) cases were satisfied with the result.No major complications occurred.Conclusions Autologous fat transfer to ROOF through upper blepharoplasty incision is effective and safe in correction of superior sulcus deformity and dermatochalasis,The operative method should be a good choice for selected patients.
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Objective To design and synthesize novel G protein-coupled lysophosphatidic acid 2(LPA2)receptor agonists with anti-radiation activity. Methods Nine new LPA2 receptor agonists(Ⅰ2-Ⅰ5 andⅡ1-Ⅱ5)were designed and synthesized using DBIBB as the lead compound. The anti-radiation activity was assayed by the MTS method using the human umbilical vein endothelial cells(HUVEC)irradiated with 8.0 Gy 60Coγray. Results and Conclusion Nine target compounds notreported in the literature were synthesized and their structures were confirmed by 1H NMR and MS. The results showed thatⅠ4 andⅡ1 have obvious anti-radiation ac-tivity,indicating that this kind of compounds is worth further studying.
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Objective:To study the role of endoplasmic reticulum stress(ERS)on ecdysterone(EDS)influenced protective effect in H2O2induced myocardial injury.Methods: The H9c2 cells were randomly divided into control group(normal cells),H2O2 groups(the cells treated with H2O2at concentrations of 1×10-3,1×10-4,1×10-5mol/L,respectively);EDS group(the cells were exposed to H2O2and treated with EDS at concentrations of 25,50,100 μmol/L respectively).The cell activity and apoptosis were measured by MTT assay and flow cytometry,respectively.The protein levels of Bcl-2,Bax,cleaved-caspase-3,caspase-4,caspase-7, caspase-12,GRP78 and CHOP were deter mined by Western blot.The MDA content and SOD activity were detected by the MDA and SOD detection kits.Results:The cell activity was decreased,cell apoptosis was increased,the content of MDA was elevated,the activity of SOD was inhibited and the protein expression of GRP78 and CHOP were increased in H2O2group as compared with control group, which were all significantly reversed by EDS treatment(P<0.05).Conclusion: Ecdysterone exhibits a protective effect on the cardiomyocytes with H2O2induced injury by inhibiting endoplasmic reticulum stress.
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Objective To observe the clinical curative effect of aerosol inhalation of Xiyanping combined with Potassium Sodium Dehydroandroan drographolide Sucinate in treatment children with herpangina. Methods A total of 106 cases of children with herpangina were collected in Zichang County People's hospital from July 2014 to Dec. 2016. All cases were randomly divided into the treatment group (54 cases) and the control group (52 cases) by double blind method. The treatment group was given inhalation treatment of Xiyanping combined with Potassium Sodium Dehydroandroan drographolide Sucinate, the control group were treated with Xiyanping plus Ribavirin Spray. The clinical efficacy and recurrence rate were compared before and after treatment. Results The total effective rate of the treatment group was significantly higher than that of the control group (P<0.05), and the adverse reactions and recurrence rate were significantly lower than that of the control group (P<0.05). Conclusion Inhalation treatment of Xiyanping combined with Potassium Sodium Dehydroandroan drographolide Sucinate in children with Herpangina has significant clinical efficacy with less adverse reaction and lower recurrence rate.
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Objective To observe the clinical curative effect of aerosol inhalation of Xiyanping combined with Potassium Sodium Dehydroandroan drographolide Sucinate in treatment children with herpangina. Methods A total of 106 cases of children with herpangina were collected in Zichang County People's hospital from July 2014 to Dec. 2016. All cases were randomly divided into the treatment group (54 cases) and the control group (52 cases) by double blind method. The treatment group was given inhalation treatment of Xiyanping combined with Potassium Sodium Dehydroandroan drographolide Sucinate, the control group were treated with Xiyanping plus Ribavirin Spray. The clinical efficacy and recurrence rate were compared before and after treatment. Results The total effective rate of the treatment group was significantly higher than that of the control group (P<0.05), and the adverse reactions and recurrence rate were significantly lower than that of the control group (P<0.05). Conclusion Inhalation treatment of Xiyanping combined with Potassium Sodium Dehydroandroan drographolide Sucinate in children with Herpangina has significant clinical efficacy with less adverse reaction and lower recurrence rate.
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Objective To investigate the molecular expression and clinical significance of Vimentin and E-cadherin during epithelial-mesenchymal transformation of hepatocellular carcinoma (HCC) tissues.Methods Hepatocellular carcinoma and paracancerous tissue were collected from 55 patients,while nonneoplastic nonnal liver tissue were collected from 20 patients without cancerous diseases as control group.Expressions of Vimentin and E-cadherin were examined by immunohistochemistry staining.Clinicopathological features of the relative expression of Vimentin and E-cadherin,and its influence on prognosis were discussed as well.Results Vimentin was positively expressed in 69.1％ cancer tissue,and was significantly higher than paracancerous tissues and normal liver tissues(P ＜ 0.05).E-cadherin was positively expressed in 27.3％ cancer tissue and was significantly lower compared with paracancerous tissues and normal liver tissues(P ＜0.05).The expression of Vimentin and E-cadherin was negatively correlated(r =-0.653,P ＜ 0.05).Vimentin expressions in subgroups of TNM stage Ⅲ-Ⅳ,poor differentiation,multiple tumor nodules,metastasis and recurrence were all significantly higher than the respective subgroups as TNM stage Ⅰ-Ⅱ] (x2 =7.267,P ＜ 0.05),moderate to well differentiation (x2 =4.045,P ＜ 0.05),single tumor node (x2=12.143,P ＜0.05),without metastasis or recurrence (x2 =7.267,P ＜ 0.05).On the contrary,Ecadherin showed higher expression in the subgroup of single tumor node compared with multiple tumor nodules(x2 =6.878,P ＜ 0.05).The follow-up of patients further demonstrated that patients with positive Vimentin expression had a significantly lower disease-free survival compared with the Vimentin negative group (P ＜0.05).Conclusions Vimentin and E-cadherin both participated in epithelial-mesenchymal transition process of hepatocellular carcinoma.High expression of Vimentin and low expression of E-cadherin were closely correlated with occurrence and development of HCC.Vimentin and E-cadherin may serve as impottant biomarkers in clinical diagnosis and prognosis prediction of HCC.