Adult ; Female ; Humans ; Male ; Mercury Poisoning ; diagnosis ; therapy ; Middle Aged

Humans ; Male ; Middle Aged ; Silicosis ; surgery

Adult ; Chemical and Drug Induced Liver Injury ; Dimethylformamide ; poisoning ; Humans ; Liver ; pathology ; Liver Diseases ; blood ; pathology ; Male ; Necrosis ; Occupational Diseases ; therapy ; Poisoning ; pathology ; therapy

A reasonable and practicable quality standard was developed for mori liquid extract from different sources by TLC, HPLC and fingerprint technology. In TLC method, the compounds were separated on polyamide film using glacial acetic acid-water (1: 3) as mobile phase at a UV wavelength of 365 nm. All qualified samples had the spots of the same color as the control herb and substance. The RP-HPLC method was used to determine the content of mulberroside A with mobile phase of methanol-water (25: 75) at a wave-length of 326 nm. The mulberroside A was in good linear with a regression equation of Y = 46.965X (r = 0.999 6) in the range of 4.6 - 228 mg x L(-1). In 14 batches of samples, the mulberroside A in 4 batches of them was less than 0.5 g x L(-1), and was more than 2.0 g x L(-1) in the other batches. It was suggested that the content limit of mulberroside A should be no less than 1.5 g x L(-1). The HPLC fingerprints were evaluated by the similarities. It has found that the similarities of different mori liquid extracts were very low and the chemical diversity of mori cortex was the major factor of similarity. Moreover, the process impact was minimal. Thus the fingerprint was not included in this quality standard.
China ; Chromatography, High Pressure Liquid ; Disaccharides ; chemistry ; isolation & purification ; Drugs, Chinese Herbal ; chemistry ; isolation & purification ; standards ; Morus ; chemistry ; Quality Control ; Stilbenes ; chemistry ; isolation & purification

Expression of HLA class Ⅱ antigens(HLA-DR, DQ and DP), interleukin2 receptors(IL-2R) and transferrin receptors(TfR) of blood monocytes from 10 patients with insulin-dependent diabetes meIlitus (IDDM) were assayed with the indirect immune fluorescence technique using corresponding monoclonal antibodies and the FITC-labelled second antibody. The results showed that the number of HLA-DQ~+ monocytes was much more in diabetics than in normal controls. The percentages of HLA-DR~+ and HLA-DP~+ monocytes in diabetics were not different significantly from those in normal controls. Besides, IL-2R~+ and TfR~+ monocytes were also found to be very much increased in diabetics as compared with controls. It was possible that increased expression of HLA-DQ antigen, IL-2R and TfR of monocytes in patients with IDDM might play a role in the pathogenesis of the autoimmune reaction.

OBJECTIVETo analyze the anesthetic management for neurosurgery using intraoperative magnetic resonance imaging (iMRI).

METHODSThirty patients with intracranial tumor received MRI for preoperative safety screening and the operation was performed with general anesthesia and support by MRI-compatible machines. The operative time, frequency and duration of MRI, MRI-related time (from the preparation for MRI to the beginning of the surgery), time delay by MRI, body temperature at the initial iMRI and special issues related to the scanning and perioperative anesthesia were recorded.

RESULTSThirty patients successfully completed the operations without any incidents related to anesthesia or scanning. The mean frequency of MRI was 1.8, the mean duration of MRI was 29.24 ∓ 10.10 min, and the MRI-related time was 43.83 ∓ 10.23 min; the time delay MRI was 92.63 ∓ 28.31 min, and the body temperature was significantly higher at 2 h after MRI than that after induction.

CONCLUSIONIn the anesthetic management for neurosurgery with iMRI, the anesthesiologists should focus on the safety precaution and anesthetic modulation according to the special environment and procedure of iMRI.

Adolescent ; Adult ; Anesthesia ; methods ; Brain Neoplasms ; surgery ; Female ; Humans ; Magnetic Resonance Imaging ; methods ; Male ; Middle Aged ; Monitoring, Intraoperative ; instrumentation ; methods ; Neuronavigation ; methods ; Neurosurgery ; Neurosurgical Procedures ; methods ; Young Adult

Objective:To understand the rotavirus contamination in the environment of microbiology laboratory, identify the key parts prone to contamination in the laboratory, and evaluate the inactivation efficacy of three common disinfectants on rotavirus.Methods:The laboratory environment and the surface of personal protective equipment were sampled with virus sampling swab after the experimental operation, and rotavirus nucleic acid was detected by real-time RT-PCR. Rotavirus inactivation experiments were carried out on chlorine containing disinfectant, ethanol and benzalkonium chloride according to the Chinese Technical Standard of Disinfection (2002 version).Results:A total of 174 samples were collected and 13 rotavirus nucleic acid positive samples were detected. The overall positive rate was 7.47%. The rotavirus could be inactivated with more than 4.00 log titer reduction, with 500 mg/L sodium hypochlorite disinfectant for 5 minutes, 75% ethanol for 1 minute and 1 500 mg/L benzalkonium chloride for 1 minute.Conclusions:There is a risk of rotavirus contamination in the microbiology laboratory. Sodium hypochlorite, ethanol and benzalkonium chloride disinfectants can effectively inactivate rotavirus and can be used for rotavirus decontamination.

Using a combination of various chromatographic techniques including column chromatography over silica gel, Sephadex LH-20, macroporous adsorbent resin, and reversed-phase HPLC, 115 compounds including diterpenes, sesquiterpenes, treterpenes, coumarins, lignans, fatty acid derivatives, and simple aromatic derivatives were isolated from an ethanol extract of branch of Fraxinus sieboldiana (Oleaceaue), and their structures of the compounds were elucidated by spectroscopic methods including 1 D, 2D NMR and MS techniques. Among them, 41 compounds were new. In previous reports, we have been described the isolation, structure elucidation, and bioactivities of the 41 new compounds and 22 known orii including 8 coumarins, 4 phenolic and 12 phenylethanoidal glycosides. As a consequence, we herein reported the isolation and structure elucidation of the remaining 50 known compounds including 8- hydroxy-12-oxoabieta-9(11),13-dien-20-oic 8, 20-lactone(1), 6beta-hydroxyfcrruginol(2),(+)-pisiferic acid(3), (+)-pisiferal(4),(+)-7-dehydroabiet6none(5), 1-oxomiltirone(6), subdigitatone(7), linarionoside B(8), (9S)-linarionoside B(9), (3R,9R)-3-hydroxy-7,8-dihydro-beta-ionol 9-O-beta-D-apiofuranosyl-(1-->6)-beta-D-glucopyranoside(10), ursolic acid(11), betulinic acid(12), euscaphic acid(13), (+)-syringaresinol(14), (+)-fraxiresinol(15), (+)-1-hydroxysyringaresinol(16), pinoresinol(17), medioresinol(18), 8-acetoxypinoresinol(19), epipinoresinol(20), (-)-olivil(21), (+)-cyclo-olivil(22), 3,3'-dimethoxy-4,4',9-trihydroxy-7,9'-epoxylignan-7'-one(23),(+)-1-hydroxypinoresinol 4'-O-beta-D-glucopyranoside (24), (+)-1-hydroxypinoresinol 4"-O-beta-D-glucopyranoside(25),(+)-syringaresinol O-beta-D-glucopyranoside (26), liriodendrin (27), ehletianol D(28), icariside E5(29) (-)-(7R, 8R)-threo-1-C-syringylglycerol(30),(-)-(7R, 8S)-erythro-guaiacylglycerol (31),(-)-(7R, 8R)-threo-guaiacylglycerol(32), 3-(4-beta-D-glucopyranosyloxy-3-methoxy)-phenyl-2E-propenol(33),2,3-dihydroxy-l-(4-hydroxy-3,5-dimethoxyphenyl)-1-propanone(34), 2,3-dihydroxy-1-(4-hydroxy-3-methoxyphenyl)-1-propanone (35), 3-hydroxy-l-(4-hydroxy-3,5-dimethoxyphenyl)-1-propanone(36), omega-hydroxypropioguaiacone(37), sinapyladehyde(38), trans-p-hydroxycinnamaldehyde(39), syringic acid(40), vanilic acid(41), vanillin(42), 4-hydroxy-benzaldehyde (43), (24R)-24-ethyl-5alpha-cholestane-3beta,5,6beta-triol(44), beta-sitosterol(45), daucosterol(46), 2,6-dimethoxy-I,4-benzoquinone(47), 2,6-dimethoxy-pyran-4-one(48), 1-(beta-D-ribofuranosyl)uracil(49), and mannitol(50). Compouds 1-7,12,18,28-37,44 and 48 were obtained from the genus Fraxinus for the first time.
Fraxinus ; chemistry ; Magnetic Resonance Spectroscopy ; Mass Spectrometry ; Plant Extracts ; analysis

AIMTo study the protective effect of ligustrazine against photoreceptor cell injury induced by N-methyl-N-nitrosourea (MNU) in Sprague-Dawley (SD) rats.

METHODSLigustrazine injections of different doses were injected intraperitoneally into 47-day female SD rats once a day and a single intraperitoneal injection of MNU 60 mg x kg(-1) was given to 50-day rats. At different intervals after MNU treatment,the animals were sacrificed. The apoptotic index of photoreceptor cells was calculated by TUNEL labeling at 24 h following MNU treatment; peripheral retinal damage was evaluated based on retinal thickness at the d 7 after MNU treatment, and the expression of c-jun and c-fos genes was detected by RT-PCR technique.

RESULTSLigustrazine injection could remarkably increase total thickness of peripheral retina and decrease apoptotic index of photoreceptor cells induced by MNU in a dose-dependent manner. Compared with MNU-treated rats, the gene expression of c-jun and c-fos was time-dependently down-regulated in ligustrazine-treated group.

CONCLUSIONLigustrazine injection partially protects against MNU-induced retinal damage by down-modulating the expression of c-jun and c-fos genes to inhibit apoptosis of photoreceptor cells.

Animals ; Apoptosis ; drug effects ; Dose-Response Relationship, Drug ; Female ; Genes, fos ; Genes, jun ; Injections, Intraperitoneal ; Ligusticum ; chemistry ; Methylnitrosourea ; Photoreceptor Cells ; drug effects ; Photoreceptor Cells, Vertebrate ; drug effects ; pathology ; Plants, Medicinal ; chemistry ; Protective Agents ; administration & dosage ; pharmacology ; Pyrazines ; administration & dosage ; isolation & purification ; pharmacology ; Rats ; Rats, Sprague-Dawley ; Retina ; metabolism ; pathology

BACKGROUNDLipoprotein glomerulopathy (LPG), once recognized as a rare glomerular disease, has been reported around the world in recent years. In this study, we reported 8 patients of LPG and aimed to explore the clinical features and pathological characteristics of LPG under light microscope, immunofluorescence staining, and electron microscope.

METHODSClinical manifestations were recorded on the day of renal biopsy. Biochemical patterns of lipids and lipoproteins were detected by routine examination. Plasma concentrations of apo B and apo E were determined by radial immunodiffusion assays. Biopsy specimens were then processed for light microscopy, immunohistochemical staining for immunoglobulins and complement components, and electron microscopy. Glomerular deposition of apo A, B, and E were detected using monoclonal antibodies on cryostatic sections.

RESULTSAll of the eight patients presented with edema, microscopic hematuria, severe proteinuria, anemia, and enlarged kidney size. Biochemical profiles revealed high levels of triglycerides, apo B, and apo E. We noted increments of glomerular size and lipoprotein thrombi occupying capillary lumina in the glomeruli of all patients. Immunofluorescence staining showed that the thrombi were strongly positive for apo A, B, and E. Granules and various sizes of vacuoles were observed in the thrombi under electron microscope.

CONCLUSIONCompared with previous reports on LPG in other countries, unique clinical and pathological features were found in this group of Chinese LPG patients.

Adolescent ; Adult ; Child ; Female ; Humans ; Kidney Diseases ; pathology ; Kidney Glomerulus ; pathology ; ultrastructure ; Lipoproteins ; metabolism ; Male ; Microscopy, Fluorescence ; Middle Aged