In this paper, Rhodiolae Crenulatae Radix et Rhizoma extract,with high hygroscopic,was selected as research model, while lactose was selected as modifiers to study the effect of the grinding modification method on the hygroscopic. Subsequently, particle size distribution, scannin electron microscopy, infrared spectroscopy and surface properties were adopted for a phase analysis. The results showed that the modified extract, prepared by Rhodiolae Crenulatae Radix et Rhizoma extract grinding 5 min with the same amount of lactose UP2, which hygroscopic initial velocity, acceleration, and critical relative humidity moisture were less than that of Rhodiolae Crenulatae Radix et Rhizoma extract and the mixture dramatically. In addition, compared with the mixture, the size distribution of modified extract was much less, the microstructure was also difference, while the infrared spectroscopy and surface properties were similar with that of lactose. It is the main principle that lactose particle adhered to the surface of Rhodiolae Crenulatae Radix et Rhizoma extract after grinding mofication to decress the moisture obviously.
Drugs, Chinese Herbal ; chemistry ; Lactose ; chemistry ; Particle Size ; Rhizome ; chemistry ; Rhodiola ; chemistry ; Spectrophotometry, Infrared ; Surface Properties ; Wettability

Penile amputation and successful replantation is very uncommon, and there is no routine standardized procedures for dealing with this medical condition. Here we report two cases of penile amputation and replantation involving different degrees of vascular insult leading to different pathogenesis, clinical presentation, surgical approach and prognosis. This report described the microsurgical procedure and postoperative care using bipedicled scrotal flap to achieve successful engraftment and function. A review of the published data and future methods to increase success of such surgical procedures is provided.
Adult ; Amputation, Traumatic ; surgery ; Humans ; Male ; Microsurgery ; Penis ; blood supply ; injuries ; surgery ; Replantation ; methods

OBJECTIVETo study the effects of andrographolide on immune functions and the immune mechanism of its clinical application.

METHODThe amounts of IFN-alpha, IFN-gamma, TNF-alpha, IL-8 in the peripheral blood mononuclear cells(PBMCs) culture supernatants deal with by different concentrations of LianBiZhi (LBZ) injection made of andrographolide were detected by biological activity test or ELISA in vitro. The effects of LBZ injection on macrophage phagocytotic function and natural killer cells cytotoxicity were examined by means of macrophage to phagocytize cock erythrocyte and measurement of lactate dehydrogenase(LDH) activity released from the damaged cells, respectively.

RESULTThe LBZ injection could promote IFN-alpha, IFN-gamma, TNF-alpha inductions of PBMCs, but had no effect on IL-8. At the same time, the LBZ injection could not only enhance the phagocytosis activity of peritoneal macrophage from guinea pig to phagocytosis cock erythrocyte, but also augment the cytotoxicity mediated by natural killer cells from PBMCs to damage the K562 cell lines.

CONCLUSIONAndrographolide is an immunostimulant agent which can modulate both antigen specific and nonspecific immune function by means of its natural killer cells and macrophage and cytokines induction.

Animals ; Anti-Inflammatory Agents, Non-Steroidal ; pharmacology ; Chickens ; Diterpenes ; pharmacology ; Guinea Pigs ; Humans ; Injections ; Interferon-alpha ; metabolism ; Interferon-gamma ; metabolism ; Killer Cells, Natural ; drug effects ; Macrophages, Peritoneal ; drug effects ; Neutrophils ; metabolism ; Phagocytosis ; drug effects ; Tumor Necrosis Factor-alpha ; metabolism

OBJECTIVETo study the risk factors for intracranial hemorrhage in very low birth weight infants.

METHODSData from 169 very low birth weight (VLBW) infants (birth weight 1000-1500 g; gestational age 23-36 weeks) were studied retrospectively. Twenty-nine perinatal and postnatal factors were analyzed by Crosstabs Test with SPSS 12.0. A logistic regression analysis was used to identify the risk factors associated with the development of intracranial hemorrhage.

RESULTSMultivariate logistic analysis revealed that rupture of membranes (OR=0.146, 95%CI=0.22-0.964, P < 0.05), 1-minute Apgar score < or = 7 (OR=0.112, 95%CI=0.21-0.591, P < 0.01), pulmonary surfactant therapy (OR=0.110, 95%CI=0.24-0.504, P < 0.01), mechanical ventilation therapy (OR =0.076, 95%CI=0.009-0.668, P < 0.05), mechanical ventilation duration > 72 hrs(OR=0.053, 95%CI=0.007-0.410, P < 0.01), prothrombin time > 20 seconds (OR=4.186, 95%CI=1.606-10.923, P < 0.01), pH value on day 1 of life < 7.25 (OR=0.421, 95%CI=0.179-0.995, P < 0.05) and hyponatremia on day 1 (OR= 0.27, 95%CI=0.077-0.940, P < 0.05) or 2 (OR=2.480, 95%CI=1.053-5.838, P < 0.05) of life were risk factors for intracranial hemorrhage.

CONCLUSIONS1-minute Apgar score < or =7 and mechanical ventilation treatment were leading risk factors for intracranial hemorrhage, followed by abnormal coagulation and electrolytes related to perinatal asphyxia in VLBW infants. These findings can be used to improve the surveillance and prophylaxis measures in VLBW infants at high risk.

Female ; Humans ; Infant, Newborn ; Infant, Very Low Birth Weight ; Intracranial Hemorrhages ; etiology ; Logistic Models ; Male ; Risk Factors

OBJECTIVETo establish an tachyzoite-brachyzoite interconversion system for Toxoplasma gondii RH strain in vitro.

METHODSCOS-7 cells were inoculated with purified tachyzoites of T.gondii RH strain and cultured in vitro. The morphology of the cultured cells and parasites was observed and the total cellular RNA extracted on days 1 to 6 following the inoculation for detecting the expression of tachyzoite-specific protein (SAG1) and bradyzoite-specific proteins (BAG1 and SAG2C) using RT-PCR.

RESULTSWith the passage of time, the number of parasites in COS-7 cells increased but the proliferation rate was lowered gradually. The intracellular tachyzoites proliferated by means of budding and binary fission, which led to the changes in the alignment of the parasites in the cells from curved pairs, rosette or clustered, and semi-circular patterns to spherical encapsulation-like structures. These changes indicated the gradual transformation of the tachyzoites into bradyzoites. The expressions of the tachyzoite-specific SAG1 gene were detected throughout the 6 days of in vitro culture. The expression of the bradyzoite-specific BAG1 gene had been detected since the second day after the inoculation and SAG2C gene since the fifth day. Alteration of the culture condition resulted in gradual transformation of the bradyzoites into tachyzoites.

CONCLUSIONAn in vitro tachzoites-bradyzoite interconversion system for T.gondii has been successfully established, which provides the basis for further study of the mechanism of interconversion.

Animals ; COS Cells ; Cell Culture Techniques ; Cercopithecus aethiops ; Cysts ; Female ; Genes, Protozoan ; genetics ; Host-Parasite Interactions ; Mice ; Protozoan Proteins ; biosynthesis ; genetics ; Toxoplasma ; growth & development ; physiology

BACKGROUND: Recently, it is thought that endothelial function is a new independent risk factor of atherosclerotic disease. However, the differences in endothelial function between Tibetan and Han nationality populations have not been fully investigated.OBJ ECTIVE: To investigate the differences in endothelial function between Tibetan and Han nationality population.DESIGN: Controlled analysis.SETTING: Department of Cardiology, General Hospital; Department of Cardiology, Tibet General Hospital of Chinese PLA.PARTICIPANTS: Totally 272 Tibetan male subjects, aged (43±9) years, were enrolled in this study to stand for Tibetan nationality populations. All of them were native residents in Lhasa city. And 580 Qinghai-Tibetan railway constructers with Han nationality, aged (42±11) years, were enrolled in this study to stand for Han nationality populations. All of them were male subjects from Sichuan province and lived in Lhasa city for at least 1 year. All the participants received regular physical examination between February and May 2006 in the General Hospital of Tibet Military Area Command of Chinese PLA. All the subjects lived in the same high-altitude area (the altitude of Lhasa is 3 658 m). Informed consents were obtained from all the participants.METHODS: ①Height, body mass, waist circumference, hip circumference, systolic blood pressure(SBP) and diastolic blood pressure (DBP) were measured. Body mass index (BMI) was measured as body mass/height2. ② Measurement of brachial artery flow-mediated dilation (FMD): All the participants, who were in the fasting state, were examined in supine position following 20-minute rest. The room temperature was about 20 ℃. In the right arm, a sphygmomanometer cuff was positioned 5 cm below the antecubital fossa. A 10-MHz transducer (Vivid 7, GE Corporation, USA) was used to image the right brachial artery. After obtaining the baseline imaging, the blood pressure cuff was inflated 50 mm Hg (1 mm Hg=0.133 kPa) above the participant's SBP to occlude the brachial artery for 4 minutes. The brachial artery was then imaged during cuff inflation and 2 minutes after cuff release. After the cuff was released and reactive hyperaemia occurred, that was, flow in the brachial artery increased to accommodate the dilated resistance vessels in the forearm. In order to ensure the reliability of the data, the cuff placement and image record were performed by two designated performers. Computer-assisted analysis software was used to calculate brachial artery diameters. The absolute and relative changes of brachial artery FMD were automatically calculated out with the attached software of Vivid 7 ultrasonic diagnosis instrument. ③Biochemical study: The biochemical parameters were obtained after an overnight fasting for 12 hours. Venous blood was sampled for the measurement of total cholesterol, triglyceride (TG), high-density lipoprotein cholesterol and low-density lipoprotein cholesterol (LDL-C). ④ Analysis of variance was used to evaluate the measurement data. Chi-square statistic was used to compare enumeration data.MAIN OUTCOME MEASURES: Comparison of change in BMI, waist-hip ratio, blood pressure, blood lipid, baseline brachial diameter and brachial diameter between 2 groups.RESULTS: Totally 272 Tibetan nationality populations and 583 Han nationality populations participated in the final analysis. ① Brachial artery FMD: The baseline brachial artery diameter of Tibetan nationality populations was significantly larger than that of Han nationality population [(4.28±0.06) mm vs. (4.03±0.04) mm, t =71.915 6, P ＜0.01]; The absolute and relative changes of brachial artery of Tibetan nationality populations were significantly smaller than those of Han nationality populations, respectively [(0.124±0.005) mm vs. (0.141±0.006) mm; (2.934±0.204)% vs.(3.587±0.152)%, t = 40.582 0,52.173 2, P ＜ 0.01]. ②Physical study results: BMI and waist-hip ratio of Tibetan nationality populations were significantly larger than those of Han nationality populations [(30.1±2.5) kg/m2 vs. (26.5±3.4) kg/m2, 0.92±0.07 vs. 0.88±0.05, t =15.595 1, 9.525 4, P ＜ 0.01]. ③TG and LDL-C levels of Tibetan nationality population were (2.31±1.31) mmol/L and (3.49±0.91) mmol/L, respectively, which were significantly higler than those of Han nationality population [(1.97±1.44) mmol/L and (3.07±0.86) mmol/L, t =3.420 0, 6.522 3, P ＜ 0.01].CONCLUSION: ① Brachial artery FMD of Tibetan nationality population is poorer than that of Han nationality population,I.e. Poor vascular reactivity. ② Tibetan nationality populations have severe abdominal obesity and higher level of blood lipid as compared with Han nationality populations.

Objective To study the PINK1 aggresome formation and it's features in response to proteasomal inhibition.Methods Full-length PINK1 cDNA were amplified by polymerase chain reaction (PCR)from fetus brain cDNA library and subcloned into the EcoR I and BamH I sites of the vector pEGFP- N1.The integrity of the constructs was confirmed by sequencing.COS-7 cells were transiently transfected with PINK1-pEGFP-N1 using Lipofectamine 2000.Cells were treated by MG-132 in order to test the effect of proteasome inhibition on aggregation formation.The protein level of wild-type PINK1 with or without MG-132 treatment was confirmed by Western blot analysis.The formation of PINK1 aggregates was tested by fluorescence and the presence of ubiquitin,and ?-synuclein in PINK1 aggregates was examined by immunofluorescence and confocal microscopy.Results The expression level of PINK1 was significant increased into the form of aggregate in cells treated with MG-132;immunostaining for endogenous ubiquitin and ?-synuclein revealed a co-localization of both proteins in PINK1-positive aggregates.Conclusions In the presence of MG-132,overexpressed PINK1 forms into aggregates,whose components are ubiquitin and ?-synuclein.

Objective To investigate the prevalence change of drinking water type of endemic fluorosis and the effect of control measures implemented in Huangyuan county of Qinghai province. Methods In 2009, all the endemic fluorosis villages in Huangyuan county were divided into two degrees, light and medium, according to the water fluorosis content before implementing the improving water project, 1 to 2 villages were selected from each degree village, respectively,as monitoring sites, and a total of 3 villages were selected. Source water and tap water samples were collected from each village and water fluoride concentration was determined. Dental fluorosis of all children aged 8 to 12 of monitoring villages was examined, and urine samples were collected by age group of children for determination of urinary fluoride. Clinical skeletal fluorosis of adults over 16 years of age was examined, and 20 copies of adults urine samples were collected to determine urinary fluoride. One village was selected in the 3 villages monitored to conduct X-rays examination of skeletal fluorosis. Water fluoride was tested in accordance with the "Non-metallic Targets Test Methods for Drinking Water" (GB/T 5750.6-2006); urinary fluoride was tested by fluoride ion-selective electrode method (WS/T 89-1996); dental fluorosis was diagnosed using Dean method;adult skeletal fluorosis was diagnosed by "Clinical Diagnostic Criteria for Endemic Skeletal Fluorosis"(WS 192-2008). Results Twelve water samples were assayed, water fluoride was (0.35 ± 0.43) mg/L. The detectable rate of dental fluorosis of 122 children aged 8-12 was 34.43%(42/122) and the geometric mean urinary fluoride was 0.89 mg/L of the 96 children. Of the 834 adults aged 16 and over, clinical detection of skeletal fluorosis was 47.72% (398/836) and geometric mean urinary fluoride was 1.10 mg/L of the 65 cases of adult urine samples assayed, detection rate of X-rays was 31.4% (11/35) in Gangou village of the 35 adults examined.Conclusions In Huangyuan county, water fluoride of the 3 surveyed villages are normal but the endemic fluorosis is still serious. It should strengthen monitoring and analyze the causes and improve prevention measures.

Abstract: Objective To investigate the epidemiological characteristics of pathogens causing bloodstream infection in hematology patients during treatment and to compare the effects of allogeneic hematopoietic stem cell transplantation (HSCT) on them, so as to provide evidence for the diagnosis and treatment of bloodstream infection. Methods A total of 292 cases with bloodstream infection in hematology wards of the PLA General Hospital were collected from 2017 to 2021, which were divided into HSCT group and N-HSCT group according to whether performed HSCT or not. The epidemiological characteristics and influence of pathogenic bacteria in blood stream infection were analyzed and compared between the two groups. Results A total of 362 strains of pathogenic bacteria were collected from 292 cases, including 106 strains in HSCT group (84 cases) and 256 strains in N-HSCT group (208 cases). Bloodstream infections were more common in acute myeloid leukemia (130/392, 44.52%), followed by non-Hodgkin's lymphoma (74/292, 25.34%). The rate of once bloodstream infection in HSCT group was higher than that in N-HSCT Group, but the rate of twice bloodstream infections in N-HSCT group was higher. Gram-negative Bacilli were the most common pathogens (56.08%), with Escherichia coli being absolutely dominant (109/362, 30.11%), followed by Klebsiella pneumoniae (39/362, 10.77%). Coagulase-negative staphylococci (CoNS) (107/362, 29.56%) were the most common Gram-positive cocci. The detection rate of fungi in HSCT group (10/106, 9.43%) was significantly higher than that in N-HSCT Group (3.52%). The drug resistance rate of the common pathogenic bacteria was at a high level, and there was a certain proportion of multi-drug resistant strains (except for Pseudomonas aeruginosa). The resistance rates of CoNS to penicillin, gentamicin, moxifloxacin, clindamycin and rifampicin in HSCT group were higher than those in N-HSCT Group. The resistance rate of Escherichia coli to piperacillin/tazobactam, cephalosporins and etapenem in HSCT group was significantly higher than that in N-HSCT group. Conclusions The pathogens of blood stream infection in hematology patients are complicated and various. It is difficult for clinical diagnosis and treatment to detect multiple infections and multiple pathogens. HSCT patients have a higher risk of fungal bloodstream infection and more multi-drug resistant strains detected. Therefore, the identification of bloodstream infection and multi-drug resistant strains associated with HSCT patients should prompt surveillance.

Objective To study the clinical characteristics and gene mutation of hereditary spinocerebellar ataxia type 7 (SCA7). Methods The regions of SCA 7 gene containing CAG repeat were amplified by means of PCR and agarose gelelectrophoresis (AGE) technique in 26 patients and 37 normal family members from 5 families with autosomal dominant SCA. The abnormal allele fragments were sequenced by DNA sequencing machine. The correlation between clinical manifestations and CAG repeat size in SCA 7 gene product was analyzed. Results The patients carried 44-50 repeated CAG in the SCA7 allele of 2 SCA 7 gene families with main clinical manifestations as ataxia, hypopsia and retinal pigmental degeneration. About 10-30 repeated CAGs in the SCA7 allele were seen in other healthy members. Conclusion Expanded triplet repeats in SCA 7 gene contributes to the pathologic phenotype,and molecular genetic analysis is effective in the diagnosis and differentiation of SCA 7 gene.