Adult ; Dermatologic Surgical Procedures ; Female ; Humans ; Male ; Middle Aged ; Skin ; blood supply ; injuries ; Surgical Flaps ; Young Adult

Lymphocyte function associated antigen-1 (LFA-1) is a member of integrin family, that plays an important role in the adhesion of lymphocytes with other cells and matrix. To investigate the role of LFA-1 in collagen-induced arthritis (CIA), the incidence of CIA, histological and radiological assessments in the LFA-1 deficient (LFA-1~ -/- ) mice and control mice were examined. LFA-1~ -/- mice and control mice were immunized with 100?g collagen type II(CII) emulsified with an equal volume of Freund’s complete adjuvant (CFA), followed by the booster injection of the same amount of CII in CFA on day 21. Then, clinical, histological and radiological assessments were done. It showed that 57% control mice developed arthritis and apparently changed in the histological and radiological assessment, whereas the all of LFA-1~ -/- mice had the normal histological and radiographic response and none developed arthritis. These results suggeste that LFA-1 is indispensable for the onset of CIA.

Objective To study the proliferation of in vitro cultured mouse chondrocytes exposed to different doses of fluoride.Methods The third generation of primary cultured chondrocytes were exposed to the concentrations of 0,5,10,20,40 mg/L fluoride for 10 days to observe the morphological changes under light microscope and electron microscope to counter the numbers of ehondrocytes and proliferating rote with the growth curve and MTT.Results After exposed to fluoride for 10 days,the proliferation was present in the chondrocytes of the 5,10,20 mg/L groups,and shrinked chromatine and apoptosed ehondrocytes were seen in 40 mg/L group.The absorbance was not significantly different between all groups(F=2.313,P＞0.05);after exposed to fluoride for 48 and 72 hours,there was a significant difference of proliferating ability among 0 mg/L(the contr01)group[(23.5±4.6)%,(29.9±1.7)%],5 mg/L group[(34.6±4.7)%,(45.3±5.9)%],10 mg/L group[(39.9±4.8)%.(56.8±5.5)%],20 mg/L group[(31.8±4.1)%,(38.3±6.5)%]and 40 mg/L group[(28.3±4.3)%,(33.4±4.8)%](F=11.401,25.671,P＜0.05).There wss a significant difference compared with the control group(P＜0.05)with that of 5 and 10 mg/L groups higher than that of 40 mg/L groups(P＜0.05).Conclusions Lower doses of fluoride improve the proliferation of in vitro mouse chondrocyte in a short exposing time,higher doses result in the opposite.

AIMStudies on synthesis and antibacterial activity of new heterocycles.

METHODSThe cyclocondensation of [(3-pyridyl)-1,3,4-oxadiazol-2-yl] thio acetic acid with various aroyl hydrazines in the presence of POCl3 and xylene gave the corresponding titled compounds, and the in vitro antibacterial activity was primarily evaluated by the method of cupplate diffusion solution.

RESULTSSixteen novel titled compounds were synthesized, their structures were confirmed by IR, 1HNMR, MS and elemental analysis. Biological screening results demonstrated that most of the compounds prepared displayed potential antibacterial activity.

CONCLUSIONOxadiazoles incorporting pyridyl oxadiazole ring may be usefully antibacterial candidate drugs.

Anti-Bacterial Agents ; chemical synthesis ; chemistry ; pharmacology ; Escherichia coli ; drug effects ; Oxadiazoles ; chemical synthesis ; chemistry ; pharmacology ; Proteus vulgaris ; drug effects ; Staphylococcus aureus ; drug effects

Animals ; Colon ; pathology ; Dogs ; Female ; Graft Survival ; Intestinal Mucosa ; pathology ; transplantation ; Mouth Mucosa ; pathology ; transplantation ; Reconstructive Surgical Procedures ; Urethra ; surgery

OBJECTIVETo investigate the perioperation medication on the first patient who was operated facial allotransplantation, including immunosuppressive drug and adjunctive drug, so that to search a effective medication schedule to the patient operated facial allotransplantation.

METHODSFK506, MMF, Prednisone and Zenapax was performed as immunosuppressive regiment in perioperative treatment; meanwhile, anti-infectives was administered to take precautions against all sorts of infections, such as bacterium, virus and fungus. Furthermore, all kinds of adjunctive drug, Losec, glucurolactone and so on, was administered to protect those function of stomach, liver, kidney and so on. Clinical observations were made on the signs and symptoms of graft survival or rejection, as well as immunological indexes were tested in laboratory. Biopsies of graft were also made at 30 d after operation. Side effect and complication of drug was monitored, in case the body suffered harm.

RESULTSFacial allograft was survived, and the temperature and color of skin were normal. Swelling of tissue was gradually subsidise after 4 days, and recovered in a half month. The count and ratio between Th and Ts were normal, skin Biopsies of every time had no found of hyperacute or acute rejection, and side effect and complication of drug had no monitored.

CONCLUSIONSThe regiment of perioperation medication was successfully performed.

Adult ; Face ; surgery ; Humans ; Immunosuppressive Agents ; therapeutic use ; Male ; Tissue Transplantation ; methods ; Transplantation, Homologous

BACKGROUND: Islet transplantation is currently considered the most promising method for treating insulin-dependent diabetes. The two most-studied artificial islets are alginate-encapsulated b cells or b cell spheroids. As three-dimensional (3D) models, both artificial islets have better insulin secretory functions and transplantation efficiencies than cells in twodimensional (2D) monolayer culture. However, the effects of these two methods have not been compared yet. Therefore, in this study, cells from the mouse islet b cell line Min6 were constructed as scaffold-free spheroids or alginate-encapsulated dispersed cells. METHODS: MIN6 cell spheroids were prepared by using Agarose-base microwell arrays. The insulin secretion level was determined by mouse insulin ELISA kit, and the gene and protein expression status of the MIN6 were performed by Quantitative polymerase chain reaction and immunoblot, respectively. RESULTS: Both 3D cultures effectively promoted the proliferation and glucose-stimulated insulin release (GSIS) of MIN6 cells compared to 2D adherent cells. Furthermore, 1% alginate-encapsulated MIN6 cells demonstrated more significant effects than the spheroids. In general, three pancreatic genes were expressed at higher levels in response to the 3D culture than to the 2D culture, and pancreatic/duodenal homeobox-1 (PDX1) expression was higher in the cells encapsulated in 1% alginate than that in the spheroids. A western blot analysis showed that 1% alginate-encapsulated MIN6 cells activated the phosphoinositide 3-kinase (PI3K)/serine/threonine protein kinase (AKT)/forkhead transcription factor FKHR (FoxO1) pathway more than the spheroids, 0.5% alginate-, or 2% alginate-encapsulated cells did. The 3D MIN6 culture, therefore, showed improved effects compared to the 2D culture, and the 1% alginate-encapsulated MIN6 cells exhibited better effects than the spheroids. The upregulation of PDX1 expression through the activation of the PI3K/AKT/FoxO1 pathway may mediate the improved cell proliferation and GSIS in 1% alginate-encapsulated MIN6 cells. CONCLUSION This study may contribute to the construction of in vitro culture systems for pancreatic islets to meet clinical requirements.

Background: and Purpose The present study aimed to compare the efficacy and tolerability of different blood pressure (BP)-lowering strategies. Methods: Randomized controlled trials that compared various antihypertensive treatments and stroke outcomes were included. Eligible trials were categorized into three scenarios: single or combination antihypertensive agents against placebos; single or combination agents against other agents; and different BP-lowering targets. The primary efficacy outcome was the risk reduction pertaining to strokes. The tolerability outcome was the withdrawal of drugs, owing to drug-related side effects (PROSPERO registration number CRD42018118454 [20/12/2018]). Results: The present study included 93 trials (average follow-up duration, 3.3 years). In the pairwise analysis, angiotensin-converting enzyme inhibitors (ACEis) and beta-blockers (BBs) were inferior to calcium channel blockers (CCBs) (odds ratio [OR], 1.123; 95% confidence interval [CI], 1.008 to 1.252) (OR, 1.261; 95% CI, 1.116 to 1.425) for stroke prevention, BB was inferior to angiotensin II receptor blockers (ARB) (OR, 1.361; 95% CI, 1.142 to 1.622), and diuretics were superior to ACEi (OR, 0.871; 95% CI, 0.771 to 0.984). The combination of ACEi+CCB was superior to ACEi+diuretic (OR, 0.892; 95% CI, 0.823 to 0.966). The network meta-analysis confirmed that diuretics were superior to BB (OR, 1.34; 95% CI, 1.11 to 1.58), ACEi+diuretic (OR, 1.47; 95% CI, 1.02 to 2.08), BB+CCB (OR, 2.05; 95% CI, 1.05 to 3.79), and renin inhibitors (OR, 1.87; 95% CI, 1.25 to 2.75) for stroke prevention. Regarding the tolerability profile, the pairwise analysis revealed that ACEi was inferior to CCB and less tolerable, compared to the other treatments. Conclusions Monotherapy using diuretics, CCB, or ARB, and their combinations could be employed as first-line treatments for stroke prevention in terms of efficacy and tolerability.

OBJECTIVETo probe blood serum Ab-IgG characteristics of severe acute respiratory syndrome (SARS) patients in Guangzhou and investigate the related factors.

METHODSThe serum of such population diagnosed as SARS convalescent patients, non-SARS patients, family consanguineous contraction persons, wild animal and vegetable salesman and community common people was collected. The lab detective method of ELISA was adopted for these serum samples. And the epidemic investigations for the SARS patients were also carried out.

RESULTSOf these populations, the detective rate of Ab-IgG for the clinic diagnosed SARS patients, which was 53.7%; That for the wild animal salesman and community common people were 16.7% and 0.9%, respectively. Among the clinic diagnosed SARS patients, the positive antibody detective rate was 90.4% for those which had specific contact history or infectivity, which was higher than that for other population. Among the specific contact history or infectivity cases, the antibody positive rate for the young and the old was lower than that for the adult. Meanwhile the difference did not exist among other cases. The antibody positive rate was identical between the male and the female. And the antibody detective rate was decreased by the month.

CONCLUSIONAs a whole SARS-CoV Ab-IgG detective rate for the clinic diagnosed SARS patients was 53.7% only. The reasons for that mainly lie in the wrong clinic diagnosis besides these factors such as age, hormone use and reagent and so on. The combination of lab detection results and epidemic investigation was propitious to the diagnosis veracity. It was impossible for the sub-clinic infection of SARS-CoV virus. The importance in the virus transmitting course need to be further studied.

Adult ; Antibodies, Viral ; blood ; Child ; China ; epidemiology ; Female ; Humans ; Immunoglobulin G ; blood ; Male ; Middle Aged ; SARS Virus ; immunology ; Seroepidemiologic Studies ; Severe Acute Respiratory Syndrome ; epidemiology ; immunology

OBJECTIVETo study thoracic high resolution CT findings of severe acute respiratory syndrome (SARS) patients in convalescent period and the relationship between the features with laboratory and pulmonary function results.

METHODSAll the 100 SARS patients who had been discharged from hospital for about 2 months underwent thoracic high resolution CT examinations. Among them, 65 also had laboratory results and 91 underwent examinations of pulmonary function.

RESULTSForty-nine SARS patients (49.0%, 49/100) in convalescent period still had abnormal findings in CT examination. And ground-glass opacification (95.9%, 47/49) and reticular opacification (59.2%, 29/49) were common. There was no significant difference in the level of lymphocytes and CD4 cells among groups divided according to severity of CT findings (P > 0.01). Diffusing capacity for carbon monoxide (DLco%) of level 2 and 3 were statistically lower than that of level 0 (P < 0.01).

CONCLUSIONSThe features of CT findings of SARS patients in convalescent period are not the same as those of patients in period of apparent manifestation. The high resolution CT can reflect pulmonary diffusing function to some degree.

Adolescent ; Adult ; Aged ; Convalescence ; Female ; Follow-Up Studies ; Humans ; Lung ; diagnostic imaging ; Lymphocyte Subsets ; Male ; Middle Aged ; Respiratory Function Tests ; Severe Acute Respiratory Syndrome ; diagnostic imaging ; Tomography, X-Ray Computed ; methods