OBJECTIVE: Amyotrophic lateral sclerosis(ALS) is a chronic progressive degenerative disease selectively infringing upper and lower motoneurons, and its pathogeny and pathogenesis are unclear till now. Its researches are mainly relying on animal models. Currently, there are many methods for the establishment of ALS animal.model and each of them has its own characters,practicability and values.DATA SOURCES: Relative articles during the period from January 1980 to December 2003 were searched on the Medline database by the title of the article with the searching word "amyotrophic lateral sclerosis, model" and the language of the articles was limited to English.STUDY SELECTION: Data were preliminarily screened for the selection of the literatures mainly regarding the researches of ALS animal models; and then literatures regarding the application of ALS animal model in medication effectiveness and pathogenesis were eliminated; the full texts of the rest literatures were searched as inclusive criteria.DATA EXTRACTION: Totally 96articles searched with "amyotrophic lateral sclerosis, model" in title were collected. Fifteen tests were in accordance with the inclusive criteria. In the eliminated 81 tests, 75 literatures were about the researches on the application of ALS model for medication observation and pathogenesis research, and the rest 6 articles were repetitive experiments.DATA SYNTHESIS: ALS neurotoxic animal model, immune mediated animal model, spontaneous animal model, and transgenic animal model were established in the selected literatures, which also investigated the mechanism, features, practicability and value of the animal model.CONCLUSION: The establishment of animal models simulated ALS symptoms or pathogenesis in the above literatures can be used in ALS disease researches as referencing model, which could provide animal experimental basis for the researches of ALS pathogenesis and the confirmation of therapy plan.

Objective To investigate the effect of IVIG on pre-existing anti-HLA-A2 Ab levels and graft skin survival.Methods C57BL/6 wild type mice were sensitized to HLA-A2 by intraperitoneal injec-tion (IP) of HLA-A2 TgN mouse spleen cells (C57BL/6-TgN [HLA-2.1]1Enge SC) expressing human HLA-A2 at day 0, week 3 and 4.Sensitized mice were respectively treated with human IVIG , albumin, gly-cine, or PBS for 5 days during week 7.Skin transplantation from TgN mice to C57BL/6 wild type mice was performed at week 10 .Efficacy of IVIG DES was assessed by measuring anti-HLA Ab levels by ELISA pre-/post-Rx and graft skin survival was monitored daily post-Tx.Results Changes of HLA-A2-IgG levels:IgG HLA-A2 class I Ab levels in all groups predictably increased from baseline following spleen cell IP and peaked at week 4 ( P <0.01 ) , indicating sensitization .IVIG-treated mice showed significantly lower IgG Ab levels vs.albumin, glycine and PBS-treated at week 9 post-desensitization ( P <0.01).IgG quickly increased to extremely high levels in all groups following skin transplantation ( P <0.01 ) .Graft skin sur-vival between Rx-groups were similar with all rejecting at about 7 days post-transplantation ( P >0.05 ) . Conclusion However, IVIG alone does not inhibit anti-HLA class I Ab production after skin transplanta-tion or prolong SG survival , indicating combination of IVIG with other immunosuppressant or more optimal protocol for desensitization might show more efficacy and should be under explored .

Objective: To observe the effect of oxymatrine (OM) on the expression of HBV DNA in HepG2.2.15 cells and to investigate the anti-HBV mechanism of OM. Methods: The level of HBV DNA in HepG2.2.15 cells incubated with different concentrations of OM was quantified by equivalent competitive PCR combining with DNA hybridization quantitative detection technique (PCR-ELISA). The in vitro anti-viral effect of OM was evaluated by calculating the inhibiting rate. Results: OM inhibited the expression of HBV in HepG2.2.15 cells. The inhibiting rate increased with the drug concentration. The stable concentration of OM in medium was important in keeping the inhibiting rate. Conclusion: OM can inhibit the synthesis of HBV directly at the level of HBV DNA replication.

To investigate the therapeutic effects of Lipi Huatan Jiangzhi Tablet(LHJT),80 cases of hyperlipenda were landomly allocated to LHJT group(50) and lypanthy group(30) and single-blindedtrial was applied.Blood lipids(total cholesterol,triglyceride,high density lipoprotein,apoprotein A andapoprotein B),blood theology and free radicals(lipid peroxide, superotide dismutase and glutathionesuperokidase) were observed.The results showed that the regulatory effect on lipid medslism in LHJTgroup was better and more stable; blood theology, free radicals and the main symptoms were more improved as comapared with lypanthy group. Meanwhile,the total effective rate of LHJT for patients withspleen-deficiency and phlegm-stagnation syndrome was higher than that with other TCM syndromes(P

OBJECTIVE: To investigate the application value of narrow band imaging (NBI) in early diagnosis of pharyngolaryngeal tumors. METHOD: A total of 106 patients received NBI endoscopy in the endoscopic diagnosis. Lesions found under the white-light endoscopy mode and NBI endoscopy mode were compared in the morphology of capillaries on lesiorn surface and the clarity of lesion rim. Biopsy was performed in suspected areas with those two endoscopies for the lesions found under white-light endoscopy and NBI endoscopy, the morphology of capillaries on the surface of lesion and the clarity of lesion boundary were compared between both. Biopsy was performed for suspected areas under two modes, and specimens were preserved in 10% formaldehyde for pathological examination. The characteristic, position and endoscopic diagnosis under two modes were recorded. All the patients underwent corresponding laryngeal tumor resection according to the histopathological result of biopsy, and the histopathological result of resected tissues was taken as the gold standard for diagnosis. The biopsy detection rate and biopsy correct detection rate of malignant lesions in two groups were calculated and statistical compared. RESULT: The diagnostic accuracy under white-light mode was 75.47%, while that under NBI mode was 96.23%, and the difference between them was statistically significant (χ² = 18.375, P < 0.01). The biopsy correct detection rate under white-light mode was 82.08%, while that under NBI mode was 95.28%, and the difference between them was statistically significant (χ² = 12.071, P < 0.01). The correct detection rate of malignant tumor under white-light mode was 48.15%, while that under NBI mode was 92.59%, and the difference between them was statistically significant (χ² = 10.083, P < 0.01). CONCLUSION Using NBI endoscopy to observe the morphological changes of capillaries on the pharyngolaryneal mucosa surface can increase the detection rate of early pharyngolaryngeal tumors, so it is worth to be widely applied.
Biopsy ; Early Detection of Cancer ; Endoscopy ; Humans ; Laryngeal Neoplasms ; diagnosis ; surgery ; Larynx ; surgery ; Narrow Band Imaging ; Pharyngeal Neoplasms ; diagnosis ; surgery

Animals ; Archaeal Proteins ; genetics ; metabolism ; Deoxyribonuclease I ; genetics ; metabolism ; Gene Editing ; methods ; Humans ; Natronobacterium ; enzymology ; genetics