AIM: To establish the quality standard for Baixuan Xitare Tablets (Alone, Herba Euphorbiae Humifusae, Fructus Chebulae, etc.) METHODS: Herba Euphorbiae Humifusae and Scammonia resin were identified by TLC. The content of aloin was determined by HPLC. RESULTS: Herba Euphorbiae Humifusae and Scammonia resin could be identified by TLC. Aloin showed a good linear relation in a range of 0.9360?g～ 2.184?g, r=0.9995(n=5). The average recovery was 98.54% and RSD was 0.67%(n=9), respectively. CONCLUSION: The method is simple, accurate and specific and can be used for the quality control of Baixuan Xitare Tablets.

Objective To study the effect of thymosin beta4 on the expression of matrix metalloproteinase‐2(MMP‐2) and MMP‐9 of human hypertrophic scar fibroblasts and explore mechanism of thymosin beta4 on hypertrophic scar .Methods Fibro‐blasts were cultured in vitro from the orthopaedic patients(within 6 months after burns) admitted in the first affiliated hospital of Nanchang university from June to September 2013 .The Fibroblasts were divided into experiment group :0 .05 ,0 .1 ,1 .0 μg/mL and 5 .0 μg/mL ,and control group :no thymosin beta4 .The expression levels of MMP‐2 ,MMP‐9 were observed by RT‐PCR and West‐ern blot .Results The expression levels of MMP‐2 and MMP‐9 were increased after the thymosin beta4 took effect ,and it was espe‐cially significant in 1 .0 μg/mL and 5 .0 μg/mL group ,there was statistical difference between experiment group and control group (P<0 .05) .Conclusion Thymosin beta4 can dose‐dependently promote the expression of MMP‐2 and MMP‐9 and inhibit the pro‐liferation of hypertrophic scar .

Objective To study the cyfluthrin resistance and potential mechanisms of Anopheles sinensis in Nanchang Chang-bei International Airport,Nanchang City,Jiangxi Province. Methods The resistance levels of the local An. sinensis were de-tected by WHO drug resistance bioassay. During the bioassay,the dying mosquitos were classed as sensitive mosquitos,and the survival ones were classed as resistant mosquitos. The P450 monooxygenase activity and glutathione S-transferase activity were detected and compared between the two groups. At the same time,the death time of each sensitive mosquito was recorded,and the correlations between the death time and the P450 monooxygenase activity and glutathione S-transferase activity were ana-lyzed,respectively. Results The bioassay mortality of the local An. sinensis was 59.5%. The differences of the P450 monooxy-genase activities among the resistant mosquitos,sensitive mosquitos and laboratory sensitive mosquitos had statistical signifi-cances(F=151.89,P<0.01),the resistant mosquitos>sensitive mosquitos>laboratory sensitive mosquitos. The differences of glutathione s-transferase activities among the three groups had no statistical significance(F=0.72,P=0.49). There existed positive correlation between the mosquito death time and the P450 monooxygenase activity,and the regression equation was y=79.479+1.512x with the correlation coefficient of 0.88,while there was no correlation between the mosquito death time and the glutathione S-transferaseactivity. Conclusion The An. sinensis in Nanchang Changbei International Airport has been resistant to cyfluthrin,and the promotion of P450 monooxygenase activity maybe one of the reasons for the resistance.

Objective To assess the safety and the curative effect of the combination of minipercutaneous nephrolithotomy (mini-PCNL) and ureteroscopic lithotripsy (URL) in the treatment of nonhydronephrotic staghorn calculi. Methods The clinical data of 53 eases with non-hydronephrotic staghom calculi treated by mini-PCNL combined with URL were retrospectively analyzed. Results Fifty-three cases (64 renal units) were performed first-stsge operation, 9 renal units were stone free in first-stage operation, 33 renal units were stone free in second-stage operation, other 13 renal units were stone free in third-stage operation. A complete stone clearance rate of 85.9%(55/64) was achieved, and after one to three sessions of mini-PCNL and extracorpereal shock wave lithotripsy afterwards that increased to 95.3% (61/64). Blood transfusion was performed in 3 cases, no major complication was noted in the patients. Conclusions The combination of mini-PCNL and URL has more advantages, less invasions, easier recovery and less complications. It provides a new minimally invasive way for non-hydronephrotic staghorn calculi.

[Summary] Sixty-one patients suffering from pituitary apoplexy( PA) were mainly diagnosed according to pathologic findings, and were collected from case record, pathology, and MRI databases. They were classified into 4 types according to the clinical condition: the insidious type was characterized with only positive pathological findings;the asymptomatic type had both positive pathologic and MRI findings; the subacute type had PA associated symptoms longer than 2 weeks; and the acute type had PA associated symptoms for 2 weeks or less. The latter 2 types had positive pathological and MRI findings additionally. The basic lesions, acute or chronic symptoms, endocrinopathies and MRI findings were compared among 4 types. Results showed as followed. In all patients, there were headache(60. 7% ), blurred vision(55. 7% ), vomiting(21. 3% ), and dizziness(14. 8% ). Apoplexy associated symptoms comprised severe headache (24. 6% ), rapid vision loss (29. 5% ), and blepharopotosis or diplopia (9. 83% ). Insidious, asymptomatic, subacute, and acute types were composed of 15 (24. 6% ), 9 (14. 8% ), 19 (31. 1% ), and 18 (29. 5% ) cases, respectively. Aging and intracranial space-occupying symptoms as first complaint showed increasing trend from mild to severe types(both P<0. 05), while in chronic course it showed decreasing trend(P<0. 05). Acute massive symptoms(P<0. 01), and non-functional tumor(P<0. 01) in the 2 clinical types were much more frequent than in the two mild types. Half or more pituitary-target glands showed impaired functions in each type, and the impairment showed increasing trend through mild to severe types(P<0. 01). The present study provided a brief typing system in order to expand PA concept to a wider span covering various conditions. Some differences in tumor composition and endocrinopathies existed among the four types.

Objective: To investigate the clinical features and risk factors of diabetic foot recurrence infection in diabetes mellitus (DM) patients. Methods: A total of 158 patients with diabetic foot infection from January 2014 to December 2017 admitted to the First Affiliated Hospital of Xiamen University were selected in the study.There were 90 patients with diabetic foot recurrence.The clinical data of patients with recurrent infection and non-recurrent infection were compared and analyzed.Multivariate logistic regression was used to analyze the risk factors associated with recurrent infection of diabetic foot. Results: Ninety patients with recurrent infection of diabetic foot were cultured with 108 strains of pathogens, of which Gram-positive(G+ ), Gram-negative(G-), and other pathogens accounted for 54.63%(59 strains), 39.81%(43 strains), 5.56%(6 strains), respectively.The differences in disease duration, age, white blood cell count, hs-CRP, hemoglobin, fibrinogen, albumin levels, and Wanger grade 4 to 5 ratio, peripheral vascular lesions of the lower extremities, recent use of antibiotics and the healing time of ulcers in patients of diabetic foot recurrence and non-recurrent infections were statistically significant(t=6.003, 6.132, 3.144, 4.322, 4.513, 11.179, 7.164, χ²=4.269, 8.613, 25.083, 23.298, all P<0.05). Multivariate analysis showed that the independent risk factors for diabetic foot recurrence were peripheral vascular lesions of the lower extremities, recent use of antimicrobial agents, ulcer healing time more than 65 days(χ²=5.134, 4.807, 10.512, all P<0.05). Conclusion The results show that patients with ulcer healing time more than 65 days, vascular lesions around the lower extremities, and diabetic foot who recently used antibiotics have a higher risk of recurrent infections.Close observation should be made to take early precautionary measures based on the patients' own condition.

Objective:To learn about the genotyping of human Brucella isolated from Sichuan Province. Methods:BCSP31-PCR and AMOS-PCR were used to identify the genus and biotype of the 66 strains isolated from confirmed human brucellosis cases in Sichuan Province from 2014 to 2020, respectively. The isolated strains were genotyped by multi-locus sequence typing (MLST)-9. The sequence type (ST) was compared trough the online MLST database. A minimum spanning tree (MST) was constructed to cluster the newly discovered and known ST using the BioNumerics software version 7.6.Results:The 66 strains isolated from human cases of brucellosis in Sichuan Province from 2014 to 2020 were Brucella, and 65 of them were Brucella melitensis while one strain was Brucella abortus. The MLST method identified three known STs (ST-8, ST-39 and ST-2) and one newly type (ST-101). Among them, ST-8 was the main ST in Sichuan Province (90.91%, 60/66), another 4 strains of Brucella melitensis were ST-39, and 1 strain of Brucella abortus was ST-2. The newly type ST-101 was isolated from Leshan City in 2019, belonging to the Brucella melitensis and closely related to the evolution of ST-8. Conclusion:Brucella melitensis is the main epidemic Brucella strain in Sichuan Province, ST-8 is predominant genotype, with a small amount of ST-39, ST-101 and ST-2.

The effects of tree ages and geographic area on quality of bark of Magnolia officinalis (MO) and M. officinalis var. biloba (MOB) were studied. The volatile oils of samples extracted by a water stream distillation method were analyzed using a GC/MS method. The non-volatile ingredients of samples were determined by an HPLC method. Seven and twenty characteristic peaks were detected in the HPLC and GC fingerprint of MO, respectively, and the similar HPLC and GC fingerprint were showed in MOB. For samples collected in the same geographic area with different ages, the concentrations of active ingredients varied barely, whereas for those samples collected from different geographic area, differences on the concentrations of active ingredients were observed, for example, the concentrations of the amount of magnolol and honokiol in samples collected in Hubei province were higher than those collected in other areas. Big differences on the concentrations of active ingredients were found between MO and MOB, for MO, the ratio of honokiol/ magnolol was more than 0.7, whereas the ratio-was less than 0.7 in the case of MOB, and the concentrations of honokiol in MO were higher than those in MOB.
China ; Magnolia ; chemistry ; physiology ; Plant Bark ; chemistry ; physiology ; Plant Extracts ; analysis

OBJECTIVETo observe the effects of respiratory support with high frequency jet ventilation (HFJV) in severely burned patients with inhalation injury during early postburn stage.

METHODSTwenty severely burned patients with TBSA of 79.6 +/- 29.3% and inhalation injury were enrolled in the study. Nineteen cases received tracheostomy after admission and only one received nasal intubation. All the patients underwent HFJV to correct hypoxia. The changes in blood gas analysis, respiratory rate and pulse were recorded before and 11 days after the ventilation.

RESULTSTracheostomy was performed on 2.7 +/- 2.4 postburn days (PBDs), and HFJV was given during 4.4 +/- 2.9 PBDs. PaO(2) was evidently higher during 1 - 3 days after HFJV than that before the ventilation (P < 0.01) and remained at high level for 1 week after HFJV. There was no change in PaCO(2), respiratory rate and pulse during the ventilation.

CONCLUSIONHFJV was beneficial in improving oxygenation and without any obvious side effects during the early management of severely burned patients with inhalation injury. This might be an optimal respiratory support pattern.

Adult ; Blood Gas Analysis ; Burns ; complications ; surgery ; High-Frequency Jet Ventilation ; Humans ; Middle Aged ; Smoke Inhalation Injury ; etiology ; surgery ; therapy ; Tracheostomy

Objective The purpose of this study is to investigate the method to reduce the radiation dose to the neck skin in the Tomotherapy treatment plans for early-stage nasopharyngeal carcinoma.Methods The 17 patients with early-stage nasopharyngeal carcinoma that have been treated by the Tomotherapy were selected randomly for this skin sparing study.The neck skin sparing region was generated as an internal margin of 3 mm from the out body contour,excluding the intercrossed area with the targets.Candidate patients were planned using TP and NP method respectively:the TP group was planned with the traditional method.The new neck skin region was considered as an organ at risk (OAR) for planning dose constrain in NP group.The dosimetric metrics of targets and OARs,monitor units (MU) and delivery time were compared as the end points of these two groups.Results The two treatment plan groups satisfied the clinical requirement.There were no significant differences for D98,D95 and D2 of the targets (P ＞ 0.05).The Dmax of brainstem,D1cc of spinal cord,D of right parotid were higher in NP group than in theTPgroup (t =2.47,2.34,2.77,P＜0.05).The Dmax of left mandible joint was lower than TP group(t =2.30,P ＜ 0.05).The V30,V40,V50 and V60 of the skin were considerably lower than TP group (t =8.37,6.02,5.82,4.89,P ＜ 0.05).The mean MU and mean delivery time per fraction of NP group were 6.3％ and 8.1％ less than that of TP group respectively.Conclusions The neck skin region should be delineated as an OAR to be spared in the Tomotherapy treatment planning for early-stage nasopharyngeal carcinoma.This method can reduce the skin radiation dose effectively,alleviate the skin reaction,and improve the life quality of patients in radiotherapy.