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This study retrieved Croci Stigma related literature from CNKI, Wanfang, VIP, and Web of Science database, and used bibliometrics and CiteSpace 6.1.R2 software to analyze the published Croci Stigma related articles in Chinese and English from 2000 to 2022. The authors, research institutions, and keywords were visualized and analyzed, and the current status and development trend of Croci Stigma research was summarized by combining the information extraction methods. A total of 1 846 Chinese articles and 2 703 English articles were screened out and included. The results showed a generally steady increase in the number of Croci Stigma related articles. The results of the visualization analysis showed that there were more collaborations between researcher teams and major research institutions in English articles than Chinese articles. The Chinese articles was mainly published by China Pharmaceutical University, and most of the inter-institutional collaborations occurred in neighboring regions. The English articles was mainly published by Iranian institutions, and most of the cooperation occurred within the country, with less transnational cooperation. Keywords analysis showed that the research on Croci Stigma was mainly focused on chemical compositions, pharmacological effects, mechanisms, quality control, etc. It was predicted that the future research hotspots of Croci Stigma would mainly focus on pharmacological mechanism and clinical efficacy. The current research related to Croci Stigma still needs to be developed, cooperation should be strengthened, and more in-depth research should be conducted.
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Bibliometrics , China , Crocus , IranABSTRACT
Aim To study the ameliorative effects of Hypericum perforatum extract(HPE)on high altitude cerebral edema(HACE)in hypoxia rats.Methods A large low-pressure oxygen chamber was used to simulate the hypoxia environment at an altitude of 7 500 m.The pathological changes of HPE on the brain tissues of HACE rats were observed,and the water content,oxidative stress and inflammatory factors related indicators of brain tissues were detected.Results Through administered HPE by gavage,the histopathological damage of HACE rats was improved,the concentration of nuclear pyknosis was reduced,the degree of vacuolization was reduced,and the inflammatory response was alleviated.At the same time,HPE decreased the water content and the contents of MDA,H2O2,IL-1β,IL-6,VEGF and TNF-α in brain tissues of HACE rats,while increased the content of GSH and the activities of T-SOD and CAT.Conclusions HPE can ameliorate HACE in hypoxic rats to some extent,the mechanism of which may be related to ameliorating oxidative stress injury and reducing inflammation response.Hypericum perforatum is expected to be developed as a drug preparation for the treatment of HACE.
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BACKGROUND@#The neoadjuvant chemotherapy is increasingly used in advanced gastric cancer, but the effects on safety and survival are still controversial. The objective of this meta-analysis was to compare the overall survival and short-term surgical outcomes between neoadjuvant chemotherapy followed by surgery (NACS) and surgery alone (SA) for locally advanced gastric cancer.@*METHODS@#Databases (PubMed, Embase, Web of Science, Cochrane Library, and Google Scholar) were explored for relative studies from January 2000 to January 2021. The quality of randomized controlled trials and cohort studies was evaluated using the modified Jadad scoring system and the Newcastle-Ottawa scale, respectively. The Review Manager software (version 5.3) was used to perform this meta-analysis. The overall survival was evaluated as the primary outcome, while perioperative indicators and post-operative complications were evaluated as the secondary outcomes.@*RESULTS@#Twenty studies, including 1420 NACS cases and 1942 SA cases, were enrolled. The results showed that there were no significant differences in overall survival (P = 0.240), harvested lymph nodes (P = 0.200), total complications (P = 0.080), and 30-day post-operative mortality (P = 0.490) between the NACS and SA groups. However, the NACS group was associated with a longer operation time (P < 0.0001), a higher R0 resection rate (P = 0.003), less reoperation (P = 0.030), and less anastomotic leakage (P = 0.007) compared with SA group.@*CONCLUSIONS@#Compared with SA, NACS was considered safe and feasible for improved R0 resection rate as well as decreased reoperation and anastomotic leakage. While unbenefited overall survival indicated a less important effect of NACS on long-term oncological outcomes.
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Humans , Neoadjuvant Therapy , Stomach Neoplasms/surgery , Treatment OutcomeABSTRACT
OBJECTIVE@#High-fat diet (HFD) and inflammation are two key contributors to nonalcoholic fatty liver disease (NAFLD). Shenling Baizhu powder (SLBZP), a classical herbal compound, has been successfully used to alleviate NAFLD. However, its specific mechanisms are not fully understood. In this study, we assessed the anti-NAFLD effect of SLBZP in vivo.@*METHODS@#Rats were fed an HFD with or without SLBZP or with probiotics. At the end of week 16, an echo magnetic resonance imaging (EchoMRI) body composition analyser was used to quantitatively analyse body composition; a micro-computed tomography (micro-CT) imaging system was used to evaluate whole body and liver fat; and the Moor full-field laser perfusion imager 2 was used to assess liver microcirculation, after which, all rats were sacrificed. Then, biochemical indicators in the blood and the ultrastructure of rat livers were evaluated. Protein expression related to the liver Toll-like receptor 4 (TLR4)/Nod-like receptor family pyrin domain-containing 3 (NLRP3) signalling pathway was assessed using Western blot analysis. Further, high-throughput screening of 29 related inflammatory factors in liver tissue was performed using a cytokine array.@*RESULTS@#SLBZP supplementation reduced body weight, serum free fatty acid, and insulin resistance index (P < 0.05). It also ameliorated liver microcirculation and ultrastructural abnormalities. EchoMRI and micro-CT quantitative analyses showed that treatment with SLBZP reduced fat mass and visceral fat (P < 0.05 and P < 0.01, respectively). In addition, SLBZP decreased the expression of lipopolysaccharide (LPS)-activated TLR4/NLRP3 signalling pathway-related proteins and altered the expression levels of some inflammatory cytokines in liver tissues.@*CONCLUSION@#SLBZP can inhibit NLRP3 inflammasome activation and interleukin-1β release by suppressing LPS-induced TLR4 expression in rats with HFD-induced NAFLD. Thus, SLBZP may be beneficial for the prevention and treatment of inflammatory damage and associated diseases.
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Animals , Rats , Liver , NLR Family, Pyrin Domain-Containing 3 Protein , Non-alcoholic Fatty Liver Disease/drug therapy , Powders , Toll-Like Receptor 4 , X-Ray MicrotomographyABSTRACT
BACKGROUND@#Extralevator abdominoperineal excision (ELAPE) has become a popular procedure for low rectal cancer as compared with abdominoperineal excision (APE). No definitive answer has been achieved whether one is superior to the other. This study aimed to evaluate the safety and efficacy of ELAPE for low rectal cancer with meta-analysis.@*METHODS@#The Web of Science, Cochrane Library, Embase, and PubMed databases before September 2019 were comprehensively searched to retrieve comparative trials of ELAPE and APE for low rectal cancer. Pooled analyses of the perioperative variables, surgical complications, and oncological variables were performed. Odds ratio (OR) and mean differences (MD) from each trial were pooled using random or fixed effects model depending on the heterogeneity of the included studies. A subgroup analysis or a sensitivity analysis was conducted to explore the potential source of heterogeneity when necessary.@*RESULTS@#This meta-analysis included 17 studies with 4049 patients, of whom 2248 (55.5%) underwent ELAPE and 1801 (44.5%) underwent APE. There were no statistical differences regarding the circumferential resection margin positivity (13.0% vs. 16.2%, OR = 0.69, 95% CI = 0.42-1.14, P = 0.15) and post-operative perineal wound complication rate (28.9% vs. 24.1%, OR = 1.21, 95% CI = 0.75-1.94, P = 0.43). The ELAPE was associated with lower rate of intraoperative perforation (6.6% vs. 11.3%, OR = 0.50, 95% CI = 0.39-0.64, P < 0.001) and local recurrence (8.8% vs. 20.5%, OR = 0.29, 95% CI = 0.21-0.41, P < 0.001) when compared with APE.@*CONCLUSIONS@#The ELAPE was associated with a reduction in the rate of intra-operative perforation and local recurrence, without any increase in the circumferential resection margin positivity and post-operative perineal wound complication rate when compared with APE in the surgical treatment of low rectal cancer.
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Background@#Extralevator abdominoperineal excision (ELAPE) has become a popular procedure for low rectal cancer as compared with abdominoperineal excision (APE). No definitive answer has been achieved whether one is superior to the other. This study aimed to evaluate the safety and efficacy of ELAPE for low rectal cancer with meta-analysis.@*Methods@#The Web of Science, Cochrane Library, Embase, and PubMed databases before September 2019 were comprehensively searched to retrieve comparative trials of ELAPE and APE for low rectal cancer. Pooled analyses of the perioperative variables, surgical complications, and oncological variables were performed. Odds ratio (OR) and mean differences (MD) from each trial were pooled using random or fixed effects model depending on the heterogeneity of the included studies. A subgroup analysis or a sensitivity analysis was conducted to explore the potential source of heterogeneity when necessary.@*Results@#This meta-analysis included 17 studies with 4049 patients, of whom 2248 (55.5%) underwent ELAPE and 1801 (44.5%) underwent APE. There were no statistical differences regarding the circumferential resection margin positivity (13.0% vs. 16.2%, OR = 0.69, 95% CI = 0.42-1.14, P = 0.15) and post-operative perineal wound complication rate (28.9% vs. 24.1%, OR = 1.21, 95% CI = 0.75-1.94, P= 0.43). The ELAPE was associated with lower rate of intraoperative perforation (6.6% vs. 11.3%, OR = 0.50, 95% CI = 0.39-0.64, P < 0.001) and local recurrence (8.8% vs. 20.5%, OR = 0.29, 95% CI = 0.21-0.41, P < 0.001) when compared with APE.@*Conclusions@#The ELAPE was associated with a reduction in the rate of intra-operative perforation and local recurrence, without any increase in the circumferential resection margin positivity and post-operative perineal wound complication rate when compared with APE in the surgical treatment of low rectal cancer.
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Objective To build an intelligent field medical station based on new information technologies such as IOT.Methods The milieu exterieur and deficiencies of the existing field medical station were analyzed,and the overall architecture,main functions and technology implementation of the intelligent field medical station were proposed based on IOT and other new information technologies.Results The intelligent medical station was modified from the existing one,and enhanced its medical support ability greatly.Conclusion The intelligent field medical station adapts itself to future battlefield support as well as intelligent management and emergency support at peacetime,and thus can be applied in multi medical support mission.
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Objective To build an intelligent field medical station based on new information technologies such as IOT.Methods The milieu exterieur and deficiencies of the existing field medical station were analyzed,and the overall architecture,main functions and technology implementation of the intelligent field medical station were proposed based on IOT and other new information technologies.Results The intelligent medical station was modified from the existing one,and enhanced its medical support ability greatly.Conclusion The intelligent field medical station adapts itself to future battlefield support as well as intelligent management and emergency support at peacetime,and thus can be applied in multi medical support mission.
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OBJECTIVE: To investigate the ameliorated effect and mechanisms of phenylethanoid glycosides from Pedicularis muscicola Maxim on high altitude memory impairment. METHODS: After successfully trained in the 8-arms radial maze, fifty Wistar rats were randomly divided into normoxic control group, hypoxia group, phenylethanoid glycosides 50, 200 and 400 mg · kg-1 groups (given corresponding dose). Normoxic control and hypoxia groups were administered with distilled water for a week. When drug delivery in the fourth day, hypoxia and phenylethanoid glycosides groups rats were exposed to a simulated of 7 500 m in a specially designed animal decompression chamber. Eight arms radial maze was used to measure spatial memory, HE stained was used to observe the cell morphology in brain tissue and biochemical technique was used to detect the content of MDA and ROS and enzymatic activity of GSH and SOD in brain tissue and serum. RESULTS: Compared with the normoxic control group, for hypoxia group rats, WME, RWE and TE were respectively increased by 800%, 71%, and 127.1% (P < 0.01) and neuron damage was significantly increased, the enzymatic activity of GSH and SOD were respectively decreased by 60.9% and 18.11% (P < 0.05, P < 0.01) in brain tissue and plasma while the content of MDA was increased in brain tissueby 74.8% (P < 0.01). Compared with the hypoxia group, for phenylethanoid glycosides 200, 400 mg · kg-1 groups rats, WME, RWE, TE were respectively decreased by 68.44%, 63.11%; 33.14%, 25.34% and 43.91%, 36.72% (P < 0.05, P < 0.01) and neuron damage was significantly decreased, the enzymatic activity of GSH were respectively increased by 219.76%, 180.75% and 32 81%, 24.10% (P < 0.05, P < 0.01) and the enzymatic activity of SOD were respectively increased by 9.57%, 13.88% and 15.41%, 15.45% (P < 0.05) in brain tissue and plasma, while the content of MDA in plasma were respectively decreased by 42.73%, 42.73% (P < 0.01) and MDA and ROS in brain tissue were respectively decreased by 61.71%, 42.79% and 40.76%, 23.53% (P < 0.01); for phenylethanoid glycosides 50 mg · kg-1 group rats, the corresponding indicators had been ameliorated, but there was no significant difference. CONCLUSION: Phenylethanoid glycosides of Pedicularis muscicola Maxim can ameliorate high altitude memory impairment, which its involved mechanism may be antioxidant stress and inhibition on cell damage.
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<p><b>OBJECTIVE</b>To investigate the distribution process of puerarin contained in Zige freeze-dried powder injection in rat liver and kidney and the safety of Zige freeze-dried powder injection.</p><p><b>METHOD</b>Rats were divided into the Zige freeze-dried powder injection group and the puerarin freeze-dried powder injection control group randomly. The liver and kidney samples were collected at 5, 10, 20, 30, 45, 60 and 120 min after intravenous administration of puerarin (26.7 microg x g(-1)) through caudal vein and detected by HPLC.</p><p><b>RESULT</b>The concentration of puerarin in kidney reached the max value of 58.12 microg x g(-1) for the Zige freeze-dried powder injection group and 71.28 microg x g(-1) for the Puerarin freeze-dried powder injection group. The value of AUC(0-2h) was 26.24 microg x h x g(-1) for the Zige freeze-dried powder injection group and 35.24 microg x h x g(-1) for the puerarin freeze-dried powder injection group, MRT(0-2h) was 0. 39 h for the Zige freeze-dried powder injection group and 0. 42 h for the puerarin freeze-dried powder injection control group. Compared with the control group, the Zige freeze-dried powder injection group showed a significant decrease in Cmax and AUC(0-2h) (P < 0.05), with no notable difference in peak time tmax and MRT(0-2h). The two groups showed no obvious difference in tmax Cmax, AUC(0-2h) and MRT(0-2h) of puerarin in rat kidney.</p><p><b>CONCLUSION</b>Compared with Zige freeze-dried powder injection, Zige freeze-dried powder injection can reduce the distribution of puerarin in rat kidney, with no obvious change in the elimination of puerarin in rat kidney. It also showed no significant change in distribution and elimination in liver. This indicates that Zige freeze-dried powder injection is safer to kidney than puerarin freeze-dried powder injection.</p>
Subject(s)
Animals , Male , Rats , Freeze Drying , Injections , Isoflavones , Pharmacokinetics , Kidney , Metabolism , Liver , Metabolism , PowdersABSTRACT
<p><b>OBJECTIVE</b>To assess the reliability and validity of Chinese version of the Abbreviated Burn Specific Health Scale (BSHS-A).</p><p><b>METHODS</b>BSHS-A was translated into Chinese and revised. Eighty-two former burn patients discharged from the Second Affiliated Hospital of Kunming Medical College, and now in rehabilitation stage, were surveyed with the Chinese version of BSHS-A according to the simple random sampling. The psychometric properties of the scale, including internal consistency, test-retest reliability, content validity and discriminant validity, were analyzed.</p><p><b>RESULTS</b>One hundred and sixty-seven scales were sent to 82 participants and all of them were completed and returned. The rate of eligible questionnaire was 98.2% after eliminating 3 ineligible questionnaires. The Crobach's alpha coefficient of total score of questionnaire was 0.97, and in all domains and sub-domains ranged from 0.83 to 0.96. The test-retest coefficients from 20 participants retested within one week were between 0.74 and 0.98 (P < 0.05 or P < 0.01). Forty-eight participants surveyed within 6 months after burn were divided into mild/moderate burn group and severe burn group. The total scores of questionnaire, scores in all domains and sub-domains of patients in the latter group were lower than those in the former group (P < 0.05 or P < 0.01).</p><p><b>CONCLUSIONS</b>The Chinese version of BSHS-A shows satisfactory reliability and validity, and it can be used to investigate quality of life of Chinese burn patients in rehabilitation stage.</p>
Subject(s)
Adolescent , Adult , Female , Humans , Male , Young Adult , Burns , Rehabilitation , Injury Severity Score , Quality of Life , Reproducibility of Results , Surveys and QuestionnairesABSTRACT
<p><b>OBJECTIVE</b>To investigate the effects of total flavonoid extract of Epimedium sagittatum (TFE) on the proliferation and differentiation of newborn rat calvarial osteoblasts (ROB).</p><p><b>METHOD</b>TFE was supplemented into the culture medium of ROB at 0. 1, 1, 10 and 100 microg x mL(-1) respectively. The serum of rats administered TFES (SRAT) was also added into the medium in a parallel treatment at 2.5%, 5% and 10% respectively. Their effects on cell proliferation and differentiation was studied by MTT and the analysis of osteogenic differentiation marks.</p><p><b>RESULT</b>TFE had no appreciable and on cell proliferation and differentiation at any concentration. However, 2.5% and 5% SRAT stimulated cell proliferation strongly and, 5% SRAT significantly promoted the maturation and function of osteoblast by improving the alkaline phosphatase activity, osteocalcin secretion, calcium deposition and the number of mineralized nodular structures.</p><p><b>CONCLUSION</b>The metabolites of TFE should be the anti-osteoporosis constitutes of Epimedium sagittatum.</p>
Subject(s)
Animals , Rats , Calcification, Physiologic , Calcium , Metabolism , Cell Differentiation , Cell Proliferation , Drugs, Chinese Herbal , Pharmacology , Epimedium , Chemistry , Flavonoids , Blood , Pharmacology , Osteoblasts , Cell Biology , Metabolism , Rats, WistarABSTRACT
<p><b>OBJECTIVE</b>Enriching the hemostatic active part total iridoid glycosides from the aqueous extract of herbal Lamiophlomis rotata.</p><p><b>METHOD</b>First derivative spectrophotometry was used as the detection method and the content of total iridoid glycosides was used as tracking target. The abilities of absorption and anti-absorption of ten different types of macroreticular resin were compared, after being used to absorb the iridoid glycosides from aqueous extract of herbal L. rotata. The best purification process was optimized.</p><p><b>RESULT</b>With the optimized purification process, the content of total iridoid glycosides was 67.53%.</p><p><b>CONCLUSION</b>XDA-1 macroreticular resin has good ability of absorption and anti-absorption for iridoid glycosides and 50% ethanol was the best solvent for anti-absorption. The macroreticular resin could be reused.</p>
Subject(s)
Glycosides , Iridoids , Lamiaceae , Chemistry , Plant Roots , Chemistry , Plants, Medicinal , Chemistry , Resins, Synthetic , Technology, Pharmaceutical , MethodsABSTRACT
<p><b>OBJECTIVE</b>To investigate the effects of Rehmannia glutinosa oligosaccharides (ROS) on the proliferation of HepG2 and insulin resistance.</p><p><b>METHOD</b>The HepG2 cells were divided into control group, rosiglitazone (3.4 mg x L(-1)) treated group and ROS (0.1-30 mg x L(-1)) treated group. The proliferation of HepG2 was detected by MTT method. Insulin resistant HepG2 cells model was induced by high concentration of insulin, then the effects of ROS on glucose consumption in insulin resistant HepG2 cells were investigated.</p><p><b>RESULT</b>In the middle glucose culture medium, the absorbance at 570 nm of HepG2 was increased by high concentration of ROS, and decreased by low concentration of ROS by using MTT method, a concentration-dependent manner. ROS increased glucose consumption in HepG2 cells, and showed a better effect at the dose of 10 mg x L(-1). ROS promoted the glucose consumption in insulin resistance of HepG2 cells, improved the sensitivity of insulin resistance of HepG2 cells to insulin.</p><p><b>CONCLUSION</b>High concentration of ROS can promote the proliferation of HepG2, and however low concentration of ROS inhibits the proliferation of HepG2. ROS can significantly improve insulin resistance of HepG2 cells induced by high insulin.</p>
Subject(s)
Humans , Carcinoma, Hepatocellular , Metabolism , Pathology , Cell Line, Tumor , Cell Proliferation , Cell Survival , Dose-Response Relationship, Drug , Drug Resistance, Neoplasm , Glucose , Metabolism , Pharmacology , Hypoglycemic Agents , Pharmacology , Insulin , Pharmacology , Insulin Resistance , Liver Neoplasms , Metabolism , Pathology , Oligosaccharides , Pharmacology , Plants, Medicinal , Chemistry , Rehmannia , ChemistryABSTRACT
OBJECTIVE:To establish a UV-Vis spectrophotometric method for content determination of Curdione in Nano-micelles loaded with Curdione.METHODS:Curdione was colored by sulfuric acid-vanillin reagent.The absorbance was measured by visible-spectrophotometry at a wavelength of 500nm.RESULTS:The content of Curdione in the range of 0.050～ 0.400mg? mL-1 was in accordance with the Lambert-Beer law(r=0.999 3).The average recovery was 99.14%,and the RSD was 1.23%(n=9).CONCLUSION:This method is simple,accurate and suitable for the content determination of curdione in Nano-micelles loaded with Curdione.
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OBJECTIVE:To explore the effects of ERC61,an extract from Rhizoma Curcumae on hematopoietic functions of mice pretreated by cyclophosphamide(CTX) and the proper regime of the administration of ERC61.METHODS:The experimental mice were treated with CTX(100mg? kg-1? d-1) by ip for 3 consecutive days to establish leucopenia model.ERC61 was ip administered to the prevention group,the treatment group,and the combined group(prevention+ treatment).The numbers of blood leucocytes and bone marrow cell were counted by conventional methods;spleen index was measured as well.RESULTS:ERC61 enhanced the count of leucocytes and nucleated cells in bone marrow and improved the level of spleen index.CONCLUSION:ERC61 is able to improve the disorders of hematopoietic functions induced by CTX,and the combination therapy of prevention and treatment is the optimum one in efficacy.
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<p><b>OBJECTIVE</b>To investigate the influence of Rehmannia glutinosa oligosaccharides (ROS) on the proliferation of 3T3-L1 adipocytes and insulin resistance.</p><p><b>METHOD</b>3T3-L1 preadipocytes were cultured, the proliferation of 3T3-L1 preadipocytes was detected by MTT method. Insulin resistant 3T3-L1 adipocytes cell model was induced by dexamethasone and the change of glucose concentration in cell culture was determined after ROS treatment.</p><p><b>RESULT</b>In the high glucose DMEM culture media, MTT method showed that the absorbance at 570nm of 3T3-L1 preadipocytes was increased and that of 3T3-L1 adipocytes was decreased. ROS significantly increased glucose consumption in 3T3-L1 preadipocytes and adipocytes culture in a concentration-dependent manner. ROS improved the sensitivity of 3T3-L1 adipocytes to insulin.</p><p><b>CONCLUSION</b>ROS can promote the proliferation of 3T3-L1 preadipocytes, inhibite the proliferation of 3T3-L1 adipocytes, and also, significantly improve insulin resistance induced by dexamethasone.</p>
Subject(s)
Animals , Mice , 3T3-L1 Cells , Adipocytes , Cell Biology , Cell Proliferation , Dexamethasone , Pharmacology , Dose-Response Relationship, Drug , Insulin Resistance , Oligosaccharides , Pharmacology , Plants, Medicinal , Chemistry , Rehmannia , ChemistryABSTRACT
<p><b>OBJECTIVE</b>To explore the significance of apoptosis of rabbit small intestinal mucosal epithelial cells and lymphocytes, and lymphocytes of lumbrical process at early postburn stage.</p><p><b>METHODS</b>Twenty-five Japanese white rabbits were randomly divided into 5 groups with 5 in each group, i.e. normal control (N), 3-postburn-hour group (3 PBH), 6 PBH, 12 PBH and 24 PBH groups. The rabbits in all PBH groups were inflicted with 30% TBSA III degree of flame burn on the back. The intestinal tissue samples were harvested from 5 anatomical sites for HE staining, electron microscopic examination and the detection of apoptosis in situ by TUNEL method at all the postburn time points. The results of TUNEL slides were analyzed statistically.</p><p><b>RESULTS</b>HE staining revealed that there were relatively abundant apoptotic cells scattering solitarily in the lymph nodules and diffuse lymphatic tissue in the mucosal epithelial and mucosal lamina propria (and partially extended into the submucosal layer) of the intestine and lumbrical process in all burn groups. There were some disruption of intestinal mucosa in 24 PBH group. But no obvious inflammatory reaction and signs of necrosis were observed in all the slides. Apoptotic body formation could be identified by EM. Large number of blue-black positive cellular nuclei were revealed by TUNEL method with their distribution as similar to that found by HE staining. When comparing with those in control group, the apoptotic cells in small intestine and lumbrical process were increased obviously (P < 0.01) in 3 PBH group and reached the top level in 6 and 12 PBH groups (P < 0.01), declining thereafter to near value of 3 PBH in 24 PBH group, though it was still higher than control (P < 0.05). The number of apoptotic epithelial cells in middle distal portions of small intestinal mucosa in burn groups was much higher than that in proximal intestine (P < 0.05).</p><p><b>CONCLUSION</b>There was a large number of apoptotic cells in rabbit small intestinal mucosal epithelium, gut associated lymphoid tissue and lymphocytes in the lumbrical process, especially in the middle and distal portions of the intestine. These change might be the cellular basis of postburn intestinal translocation of bacteria and endotoxin.</p>
Subject(s)
Animals , Female , Male , Rabbits , Apoptosis , Burns , Pathology , Epithelial Cells , Pathology , Intestinal Mucosa , Pathology , Intestine, Small , Pathology , Lymphocytes , Pathology , Time FactorsABSTRACT
Objective To detect the mutant prevention concentration (MPC) of macrolide resistant Streptococcus pneumoniae, to amplify the resistance gene of Streptococcus pneumoniae mutants selected in the mutant selection window (MSW), and to investigate the mechanism in the resistance of Streptococcus pneumoniae to macrolides. Methods The Streptococcus pneumoniae strain ATCC49619 was enriched in broth, and the bacterial concentrations were adjusted to 1010 colony forming units per milliliter. The minimal inhibitory concentration (MIC), MIC for 99 % of input cells (MIC99), provisional MPC (MPCpr), and MPC of roxithromycin and azithromycin for Streptococcus pneumoniae were determined by agar plate dilution method. The ermB and mefA of Streptococcus pneumoniae mutants selected in the MSW were obtained by PCR method and sequencing. Results The MPCs of roxithromycin and azithromycin for ATCC49619 were 0.80 ?g/ml and 0.51 ?g/ml, and the MPC/MIC99 were 5.0 and 3.9. The ermB gene was detected in Streptococcus pneumoniae mutants selected in the MSW. Conclusion Adjustment of the drug dose may limit the enrichment of macrolide-resistant Streptococcus pneumoniae mutant. The mechanism in the resistance of Streptococcus pneumonia to macrolides may be associated with ermB genes carried.
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<p><b>OBJECTIVE</b>To study the effect of Zhenzhu Qishi Wan on blood pressure(BP), body weight(BW), stroke and survival rate of stroke-prone spontaneously hypertension rats(SHRsp).</p><p><b>METHOD</b>8-week-old SHRsp was randomly divided into three groups: control group, Zhenzhu Qishi Wan prevention group and therapy group (n = 10). SHRsp of prevention group were treated with Zhenzhu Qishi Wan by ig 150 mg.kg-1 per day for 6 weeks, and therapy group were given the same treatment two weeks later. Behavior and stroke were observed everyday; BW were weighted every week; BP were estimated every 2 weeks. Time of the first cerebral seizure of SHRsp was recorded.</p><p><b>RESULT</b>Zhenzhu Qishi Wan had obvious preventive and therapeutic effect on genetic hypertension. The BP of prevention and therapy groups were significantly lower than that of control group (P < 0.05 [symbol: see text] P < 0.01). The drug ameliorated general behavior of SHRsp, BW of prevention group increased faster than that of control group(P < 0.05 or P < 0.01), and BW of therapy group were also heavier than that of control group at the age of 14 weeks(P < 0.05). When the experiment ended, 60% SHRsp of control group showed stroke and 20% of them were dead, while only 20% SHRsp in each of Zhenzhu Qishi Wan-treated groups showed stroke and none of them died.</p><p><b>CONCLUSION</b>Zhenzhu Qishi Wan had significant hypotensive effect, and some protective effect on the stroke caused by hypertension.</p>