ObjectiveTo investigate the effects of medical chitin degraded membrane on post-surgical abdominal adhesions.MethodsForty adult rabbits were made to form abdominal adhesions and divided randomly into four groups including group A1 and its control group A2, group B1 and its control groups B2 with 10 animals in each group. Medical chitin degraded membrane was applied in the group A and group B to the surfaces of the positions where would be adhered. All animals were cut the belly open again on the 7th, 14th postoperative day; the adhesions about incision and appendix were graded according to the severity, and took on bioscopy.ResultsThe abdominal adhesions model was successful. The severity of adhesions and inflammatory reaction of the group A1 and group B1 was significantly milder than that of the group A2 and group B2 in every different periods ( P<0.05).ConclusionThe medical chitin degraded membrane used intraoperatively might have some efficacy in preventing post-surgical abdominal adhesions.

Objective To research on the applicational value of quantitative immunofluorescence assay of high-sensitivity C- reactive protein(HS-CRP) detection in surveillance of ankylosing spondylitis(AS) and Rheumatoid arthritis(RA).Methods Using quantitative immunofluorescence technique to detect the serum HS-CRP among 43 patients with AS and 62 patients with RA and 30 healthy controls.Results Within-run CV% of repeatability were 4.98% and3.68% for lower and higher concentration of HS- CRP,respectively;between-run CV% of the stability were 4.57% and 5.42% for lower and higher concentration of HS-CRP, respectively;There was a good correlation between results of quantitative immunofluorescence assay and BNP special protein analyzer method(r=0.997);Both the level and the positive rate of HS-CRP of patients with AS and patients with RA were higher than those of the controls in the active phase.The level and the positive rate of HS-CRP in patients with AS and patients with RA were obviously higher in the active phase than in the non-active phase(P0.05).Conclusion There were significant correlations between HS-CRP and the activity of AS and RA,So HS-CRP was useful tools for monitoring the changes of patient's condition.It doesn't have much significance in differential diagnosis of AS and RA.

Adult ; Female ; Humans ; Male ; Middle Aged ; Treatment Outcome ; Ulna ; surgery ; Ulna Fractures ; therapy ; Young Adult

To evaluate the automated segmentation algorithm for detection of intra - retinal layers to process images obtained from ultra- high resolution optical coherence tomography ( OCT ) . Graph theory and the shortest path search based on dynamic programming were applied to automatically segment the 8 intra - retinal layers. We experimentally verified the accuracy and reliability of the algorithm. The results showed that the intra-retinal layer boundaries between automated and manual segmentations matched well. The algorithm successfully segmented the intra- retinal layers in glaucoma, high myopia, and retinitis pigmentosa patients. The proposed automatic segmentation for intra-retinal layers provides a promising tool for quantitative analysis in clinical diagnosis and treatment.

This paper analyses the data structure of DICOM standard by the applications in the Non-DICOM format fluoroscopic images converted into the DICOM format images. It puts forward a solution to integrate the Multi-Channel Electrophysiology Recorder System with the X -ray system in the cardio-catheter room.
Computer Communication Networks ; Diagnostic Imaging ; instrumentation ; methods ; Electrophysiologic Techniques, Cardiac ; instrumentation ; Fluoroscopy ; instrumentation ; Humans ; Image Processing, Computer-Assisted ; instrumentation ; methods ; standards ; Information Storage and Retrieval ; Radiology Information Systems ; standards ; Software Design ; Video Recording ; instrumentation ; methods ; standards

OBJECTIVETo investigate the effects of histamine on the neurotoxicity induced by beta-amyloid(1-42)(Abeta42) in rat phaeochromocytoma (PC12) cells.

METHODSThe in vitro model of Alzheimer's disease was constructed with A beta42-treated PC12 cells. Cell morphology and MTT assay were used to evaluate the cell toxicity and histamine effects. The different histamine antagonists were applied to investigate the involvement of receptor subtypes.

RESULTThe neurotoxicity was induced by A beta42 in a concentration-dependent manner, which was reversed by histamine at concentration of 10(-7), 10(-6) mol/L. The effect was reversed by H(2) antagonist zolantidine and H(3)antagonist clobenpropit, but not by H(1) antagonist diphenhydramine.

CONCLUSIONHistamine reduces neurotoxicity induced by beta-amyloid(1-42), which may be mediated by H(2) and H(3)receptors.

Alzheimer Disease ; chemically induced ; metabolism ; prevention & control ; Amyloid beta-Peptides ; toxicity ; Animals ; Benzothiazoles ; pharmacology ; Diphenhydramine ; pharmacology ; Dose-Response Relationship, Drug ; Histamine ; pharmacology ; Histamine H2 Antagonists ; pharmacology ; Histamine H3 Antagonists ; pharmacology ; Imidazoles ; pharmacology ; Neuroprotective Agents ; metabolism ; pharmacology ; PC12 Cells ; Phenoxypropanolamines ; pharmacology ; Piperidines ; pharmacology ; Rats ; Receptors, Histamine H2 ; metabolism ; Receptors, Histamine H3 ; metabolism ; Thiourea ; analogs & derivatives ; pharmacology

Objective The immunotoxins generated by conjugating monoclonal antibody (mAb) and a certain toxin play an important and promising role in treating hematopoietic malignancies. However, most of the toxins used for the conjugation are toxic proteins, which are immunogenic in the patients. Norcantharidin (NCTD) is a small molecule toxin without immunogenicity, and thus has become a potential new drug for hematopoietic cancers. In this study, we prepared immunotoxin 2E8-NCTD by using the ZCH-4-2E8 cells produced in the laboratory of our hospital, and then detected its targeting effect against CD+19 lymphoid malignant Nalm-6 cells in vitro.Methods 2E8 mAb was obtained from mouse ascites and purified by gel chromatography. After its purity was checked by SDS-PAGE, immunotoxin 2E8-NCTD was generated by conjugating CD19 mAb with NCTD using activated ester method. The binding activity of the immunoconjugate to CD19 antigens on cell surface, and the expression levels of the CD19 antigens on Nalm-6 and K562 cells were determined by flow cytometry. The inhibitory effects of PBS, purified 2E8 mAb, NCTD, and immunotoxin 2E8-NCTD on the cell growth of either Nalm-6 or K562 cells were then compared.Results The purity of the 2E8 mAb was higher than 99% demonstrated by SDS-PAGE assay. 2E8 mAb was detected on the surface of 99.34% of the Nalm-6 cells, while on only 0.98% of the K562. The newly generated immunotoxin had a positive rate of 99.90% on the Nalm-6 with slightly reduced binding activity. Both 2E8-NCTD and NCTD significantly inhibited the growth of CD+19 Nalm-6 cells (P < 0. 001 ), while the purified 2E8 mAb did not show any significant influences on the growth of the same cell line ( P > 0.05 ). Meanwhile, no significant inhibitory effects on the CD-19 K562 cells were identified in the 2E8-NCTD, 2E8 mAb, or control groups, indicating a significant targeting effect of 2E8-NCTD against Nalm-6 cells.Conclusions The immunotoxin 2E8-NCTD can be synthesized by activated ester method. It has target killing effects on CD+19 Nalm-6 leukemia cells in vitro.

OBJECTIVETo explore safe, effective, simple and easy non-drug treatments for grade 1 essential hypertension.

METHODSAccording to TCM syndrome differentiation, 126 cases of grade 1 essential hypertension were classified into 4 types: liver-fire hyperactivity syndrome, yin-deficiency and yang-hyperactivity syndrome, excessive phlegm-dampness syndrome, yin-yang deficiency syndrome, and then the patients were randomly divided into a photoelectric combined with musical treatment group (group A), an acupuncture group(group B) and a placebo group (group C). The acupoints were selected according to TCM syndrome differentiation in group A and group B, and multi-mode audio frequency pulse photoelectric therapeutic apparatus and acupuncture were used in the two groups respectively, once daily. Taichong (LR 3) and Quchi (LI 11) were selected in liver-fire hyperactivity syndrome, Taixi (KI 3) and Sanyinjiao (SP 6) were selected yi yin-deficiency and yang-hyperactivity syndrome, Zusanli (ST 36) and Fenglong (ST 40) were selected in excessive phlegm-dampness syndrome, while Taixi (KI 3) and Guanyuan (CV 4) were selected yi yirryang deficiency syndrome. The group C was treated with oral administration of starch tablet (25 mg), one tablet each time,three times everyday. Ten days were considered as one course, totally three courses were required in the three groups. The blood pressure and scores of TCM syndromes before and after treatment were compared among the three groups.

RESULTSThe blood pressure decreased significantly after treatment in group A and group B (all P<0.01), and the decrease in systolic blood pressure was more significant in group A (P < 0.05). The total effective rate was 90.5 / (38/42) in group A, which was superior to 71. 4 (30/42, P < 0.05) in group B and 19.1% (18/34, P<0. 01) in group C. The scores of TCM syndromes were both improved in group A and group B, but without significant difference between the two groups (P > 0.05).

CONCLUSIONThe clinical effect of multi-mode audio frequency pulse photoelectric therapeutic apparatus for treatment of grade 1 essential hypertension is reliable. Meanwhile, it has the advantages of a non-invasive and simple operation.

Acupuncture Points ; Adult ; Aged ; Blood Pressure ; Combined Modality Therapy ; Electric Stimulation Therapy ; Essential Hypertension ; Female ; Humans ; Hypertension ; physiopathology ; therapy ; Laser Therapy ; Male ; Middle Aged ; Music Therapy ; Treatment Outcome

AIMTo prepare self-microemulsifying drug delivery system (SMEDDS) containing atorvastatin,and decrease its size to improve the solubility in the stomach. And to study the effect of the resultant microemulsion in reducing the presystemic clearance in the gastrointestinal mucosa and hepatic first-pass metabolism, improving the oral bioavailability, and reducing side effect and expenditure.

METHODSPseudoternary phase diagrams were used to evaluate the self-microemulsification existence area. The HPLC analyses in vitro and in vivo were set up. Solubility in various vehicles was determined. The self-microemulsification efficiency was assessed, such as self-microemulsification time, stability, particle size and zeta potential. SMEDDS containing atorvastatin, non-ionic surfactant and lipid were prepared. Droplet size/distributions and zeta potential of the resultant microemulsion were determined. Photos were taken with transmission electron microscope. Oral bioavailability was studied on prepared SMEDDS hard capsules and compared with that of the conventional tablet in Beagle dogs in vivo.

RESULTSThe optimal formulations had wide microemulsion existent field and had good self-microemulsifying efficiency. Droplet size was within 100 nm and showed Gaussian distribution. After oral administration of SMEDDS capsules and the conventional tablet to fasted Beagle dogs, the Cmax from SMEDDS was greater than that of the conventional tablet. AUC from zero to 24 h of SMEDDS was about 1.5-fold higher than that of the conventional tablet. Oral bioavailability of atorvastatin SMEDDS was greater than that of the conventional tablet.

CONCLUSIONThe results indicated the potential use of SMEDDS for the delivery of atorvastatin to increase its oral bioavailability.

Administration, Oral ; Animals ; Area Under Curve ; Atorvastatin Calcium ; Biological Availability ; Dogs ; Drug Delivery Systems ; Emulsions ; Glycerol ; analogs & derivatives ; chemistry ; Heptanoic Acids ; administration & dosage ; blood ; pharmacokinetics ; Hydroxymethylglutaryl-CoA Reductase Inhibitors ; administration & dosage ; blood ; pharmacokinetics ; Male ; Particle Size ; Polyethylene Glycols ; chemistry ; Pyrroles ; administration & dosage ; blood ; pharmacokinetics ; Solubility

A high-performance liquid chromatographic (HPLC) method with ultraviolet (UV) detector had been developed for simultaneous quantification of danshensu, protocatechuic aldehyde, caffeic acid, salvianolic acid D, rosmarinic acid, salvianolic acid B and salvianolic acid A in Danshen injection. According to the UV spectra of these components, three detection wavelengths have been selected as follows: 280 nm for danshensu and protocatechuic aldehyde, 326 nm for caffeic acid, salvianolic acid D and rosmarinic acid, 286 nm for salvianolic acid B and salvianolic acid A. The limit of detection (LOD) was improved to be in the range of 0.008-0.160 microg/ml. Moreover, excellent linear behavior over the investigated concentration range was observed, with R>0.999 for all the analytes.
Chromatography, High Pressure Liquid ; methods ; Drug Evaluation, Preclinical ; Drugs, Chinese Herbal ; chemistry ; Hydroxybenzoates ; chemistry ; Salvia miltiorrhiza ; chemistry ; Spectrophotometry, Ultraviolet ; methods