Metal sulfides are chemically attacked by Fe~ 3+ and H~+, resulting in the formation of elemental sulfur via polysulfides or thiosulfate pathway. Elemental sulfur may aggregate and even form a layer on the metal sulfide surface, which will inhibit leaching metals from the sulfides minerals. Elimination of inert elemental sulfur in a typical acidic environment can exclusively be by way of oxidation of acidophilic sulfur-oxidizing bacteria, such a way includes the attachment, transport and oxidation process of elemental sulfur by acidophilic sulfur-oxidizing bacteria. On the basis of analysis on the pertinent researches, the molecular mechanism of sulfur elimination by the acidophilic bacteria is far away from elucidated, and to attain that target, there are still much work to be done for elucidating the molecular mechanism on the attachment, transport and oxidation process of elemental sulfur by the acidophilic sulfur-oxidizing bacteria.

Objective:To discuss the therapeutic effect of blood purification on hemorrhagic fever with renal syndrome combined with acute renal failure.Methods:60 patients with hemorrhagic fever with renal syndrome combined with acute renal failure were selected,and they were divided into two groups according to the odd and even number of hospitalization.The observation group (31 cases) received hemodialysis therapy.The control group (29 cases) received veno-venous hemofiltration therapy.The renal function,serum ion,blood routine indexes and the incidence of adverse reactions during treatment was detected and compared between two groups.Results:There were no statistical significance on K+,HCO3-,BUN,Cr between two groups (P＞0.05).After treatment,the K+,BUN,Cr levels were decreased in two groups (P＜0.05).The values of observation group were lower than those of the control group (P＜0.05).The level of HCO3-was increased in two groups,and it was higher in observation group than that of the control group (P＜0.05).Before treatment,there was no statistical significance on Hb,Hc,PLT between two groups (P＞0.05).After treatment,the Hb,Hc,PLT levels were increased in two groups (P＜0.05),but there were no statistical significance between two groups (P＞0.05).During 1 year of follow-up,the 6 months and 12 months survival rate of observation group was higher than that of the control group (P＜0.05).During treatment,there were no statistical significance on the incidence of adverse reactions between two groups (P＞0.05).Conclusions:The hemofiltration therapy has a good therapeutic effect on blood purification on hemorrhagic fever with renal syndrome combined with acute renal failure,and it can regulate the electrolyte balance,improve the renal function and increase the survival rate,which is equivalent to veno-venous hemofiltration therapy in amelioration of blood state.

A poly( GMA-EGDMA) coated SPME fiber was prepared using an in-situ polymerization by direct bonding to the surface of a polydopamine-modified stainless steel wire. Then the fiber was modified by sulfuric acid. A novel solid phase microextraction coating coupled to high performance liquid chromatography ( HPLC) method based on the as-prepared fiber was developed for the determination of four pharmaceuticals and personal care products ( PPCPs) in water samples. The influences of extraction parameters, including pH, extraction time, extraction temperature and salt addition were investigated. 3 mL water sample was extracted by the as-prepared fiber for 60 min at 30 ℃, and then desorbed with mobile phase for 30 min, respectively. Desorption solution was analyzed by HPLC-DAD ( diode array detection ) . The results indicated that the extraction yield of the fiber was good for four PPCPs. The linear correlation coefficients were>0. 997 with the linear range of 2-200 μg/L. The limits of detection (S/N=3) were 0. 5-5 μg/L with RSD (n=5) of 4. 1%-11. 9%. The recoveries of four PPCPs at spiked level of 20, 50, 100 μg/L were within the range of 70. 6%-105. 5%. The results showed that this method was easy, green, accurate and precise, and could be used to assay the four PPCPs in real water samples.

Objective According to the characteristics of skin defects in ankle and foot select the posterior lateral leg pedide skin flaps supplyed by different blood to repair,providing advice and reference.Methods Between January,2001 and December,2015,163 cases of soft tissue defects at the foot and ankle were treated in our department.①The sural neurovascular flap was used in 93 cases in ankle and foot defect.②The sural nerve nutritional vessel flap pediele with the perforating branch of the peroneal artery in 36 cases in ankle and foot defect.③The sural nerve nutritional vessel flap pediele with the perforating branch of the peroneal artery including sensory reconstruction in 16 cases in heel rejion defect.④Peroneal artery perforator flap in 10 cases in anterior ankle,lateral malleolus and posterior malleolus defect.⑤The use of the sural fasciocutaneous flap alonged with peroneal artery and perforators in 8 cases in dorsal foot defect.The donor site with skin graft.Results Of the 93 sural neurovascular flaps,8 had partial loss,which were cured after dressing.All the sural nerve nutritional vessel flaps pediele with the perforating branch of the peroneal artery survived.Sensory grading standard by UK Medical Research Council was used to evaluate the recovery of sensory function on the last follow-up.The sensory function recovery of heel region flaps with reconstruction of the sensory was between S0 and S1.All peroneal artery perforator flaps survived.One of the sural fasciocutaneous flap alonged with peroneal artery and perforators occurred distal epidermis,which were cured after dressing.All patients were followed up 6-50 months (mean 20 months).All patients had recoveryed walking function,and infection wound had no recurrence after surgery.Conclusion According to the location,size,severity and the injury of peripheral vascular,select the most simple,safe,minimal damage flap for the soft tissue defects at the foot and ankle.The right choice and the exact design can improve flap survival rate,and recieve good clinical results.

Objective:To investigate the causes, characteristics and treatment of maxillofacial trauma in children. Methods: A retrospective analysis of 470 consecutive maxillofacial records of the patients not older than 14 years was conducted. Data regarding age, gender, cause, anatomic site and treatment were reviewed. Results:Most of the patients were mals(335 cases, 71.3% ), with a male and female ratio of approximately 2. 5;1 of the injuries, 28. 5% were due to accidental falls, 17.0% traffic accidents and 10.0% sharp implementt cutting. Injuries of soft tissue often occurred on gingiva, cheek, lip and chin. Mandibuir fratures were the most common (55.1% ) of all bone fractures. Conservative therapy, such as closed reduction surgery, maxillomandibular fixation, was usually performed. Conclusion: ①Boys are more tendent to be victims of maxillofacial trauma than girls. ②Falls are the first cause of child victims. ③Gingiva, chin, lip, check and mandible are the most commonly injuried sites.

A mouse model for acute hepatitis B virus (HBV) infection was established by using the hydrodynamical injection of mouse tail vein, in which the immunocompetent BALB/c mice were hydrodynamically injected with a competent replication plasmid pAAV-HBV1.2 having 1.2 fold over-length of HBV DNA. On day 1, 2, 4, 6 and 8 after injection, the levels of HBsAg, HBeAg and HBV DNA in blood serum were detected by using ELISA and fluorogenic quantitative PCR assay (FQ-PCR). And on day 8. HBsAg and HBeAg in liver tissue were assayed by immunohistochemical staining. It was found that HBsAg in blood serum could be detected on day 1 after infection in 14 of 16 mice (85.7%) injected with pAVV-HBV1.2 by using ELISA assay and the peak levels of HBsAg and HBeAg were attained during the first day after injection and then it dropped down gradually up to day 8 following injection. The titer of HBV DNA in blood serum attained its peak on day 2 and maintained a high level later on. On day 8 after injection, its titer was 1.9×10~4 copies/mL. The percentage of HBcAg-positive hepatocytes and HBsAg-positive hepatocytes in liver tissues were 5% and 2% respectively. Thus, by using the hydrodynamic injection with the competent replication plasmid, a mouse model for acute HBV infection is successively developed.

OBJECTIVE:To investigate the characteristics and factors of ADR caused by Chinese patent medicine(CPM)and to provide reference for rational drug use and safety evaluation in the clinic. METHODS:158 cases of ADR caused by CPM collect-ed from our hospital during Jan.2009-Dec.2014 were analyzed. RESULTS:The occurrence of ADR caused by CPM was related to patient’s age,route of administration,category of drugs,irrational drug-use and so on. The incidence of ADR in patients over the age of 60 was the highest (31.01%),the largest number of ADR were caused by intravenous injection (79.11%),ADRs were most likely caused by blood-regulating preparation and dissipate blood stasis preparation (79.75%);ADR manifested as lesion of skin and its appendents(43.01%),followed by gastro-intestinal injury(16.06%)and whole-general injury(10.36%). The severe ADR was anaphylactoid reaction;after symptomatic treatment,the prognosis is good. CONCLUSIONS:According to syndrome differentiation and individual difference,CPM should be used rationally,and great importance should be attached to drug use moni-toring to reduce the incidence of ADR.

The specification of decoction pieces and quality uniformity are the important factors to influence the efficacy of clinical medicine. Considering the deficiency of diversity, poor quality uniformity and confusion of decoction pieces specifications, we first propose a new idea of precision decoction pieces (PDP) based on clinical demands and fresh-processed technology. In order to explain the idea, a study case of aconite SUP is provided, including the optimized specification design, processing technology, extraction effects, quality uniformity, and toxic and efficacy variation and so on. The results showed that preparing 5 mm PDP by fresh-cutting is rather simple and practicable, with high efficiency and large yield; then, this technology could significantly decrease the ingredients loss and increase the efficacy components; moreover, it was helpful for achieving the quality uniformity and best extraction effects. This work revealed the quality superiority of PDP, and provided a good strategy and example for the standard of decoction pieces specification and modernization of processing technology.
Aconitum ; chemistry ; Chemistry, Pharmaceutical ; methods ; Chromatography, High Pressure Liquid ; Particle Size ; Plant Extracts ; chemistry ; pharmacology ; Quality Control

As color doppler ultrasound listed as the thyroid to regular physical examination project, the positive detection rate of benign and malignant thyroid diseases has increased year by year. The population of patients after thyroid surgery is getting larger and larger, however, the research on how to replace the absent thyroid with exogenous thyroid hormone is not perfect. As the switch of thyroid hormone activation and deactivation, deiodinase plays an important role in maintaining the internal environment of human body. The expression of these enzymes will change with the different needs of each organ in the individual. In the past, many authors have made a detailed description of deiodinase in basic medicine, but the principle of action in clinical aspects is relatively lacking. In this paper, the mechanism of deiodinase was reviewed through literature reading, to explore the basic principle of deiodinase in exogenous thyroid hormone supplementation after thyroid surgery.

OBJECTIVETo establish the comparative proteomic profiles of retinoid acid (RA) resistant human acute promyelocytic leukemia (APL) NB4-R1 cells before and after apoptosis induced by realgar (tetra-arsenic tetra-sulfide, As4S4).

METHODSFirst a serial of assays were performed using MTT, transmission electron microscopy, Annexin V FITC/PI double-stain, flow cytometry and confocal laser scanning microscopy to qualitatively and quantitatively observe the in vitro apoptosis inducing effect of realgar on RA-resistant cells. Then the comparative proteomic profile before and after NB4-R1 apoptosis was established using high-resolution two-dimensional electrophoresis system.

RESULTSThe inhibition effect of realgar on NB4-R1 cell growth was dose and time dependent. The 24-h 50% inhibiting concentration (IC50) was 24.06 +/- 0.19 micromol/L, and the 48-h IC50 9.50 +/- 0.13 micromol/L, and 72-h IC50 6.55 +/- 0.03 micromol/L, respectively. 24 h and 48 h were the early and late phase of major NB4-R1 apoptotic cell populations induced by 25 micromol/L realgar respectively. Differential proteomic profiles before and after realgar induced NB4-R1 apoptosis were successfully established. Averagely 1069, 975 and 893 spots could be detected of the untreated group (R0), the 24-h treatment group (R24), and the 48-h treatment group (R48), respectively by ImageMaster 2D Platinum Software. The matching rate between R24 and R0 was 79.94% and that between R48 and R0 69.33%, and that between R24 and R48 71.91%.

CONCLUSIONDifferential proteomic profiles of realgar induced NB4-R1 apoptosis were successfully established for the first time, which provided a basis for comprehensively understanding the signal transduction of realgar induced apoptosis in RA-resistant APL cells, also for screening new bio-markers and drug targets of hematopoietic malignant tumor.

Apoptosis ; drug effects ; Arsenicals ; pharmacology ; Cell Line, Tumor ; Drug Resistance, Neoplasm ; drug effects ; Electrophoresis, Gel, Two-Dimensional ; Humans ; Leukemia, Promyelocytic, Acute ; pathology ; Proteome ; analysis ; Sulfides ; pharmacology ; Tretinoin ; pharmacology