ction of immune tolerance of T cells to allergens.

This paper analyzed current problems and challenges facing hospitals in alarm management both abroad and at home. Based on a survey conducted on alarm management in hospitals, plus an analysis on different kinds of data interfaces and data exchange protocols of the medical equipment used in ICUs, a solution of alarm management is put forwarded which is based on alarm information integration and processing. It aims at improving medical equipment alarm management and reducing relevant adverse events.
Automatic Data Processing ; Clinical Alarms ; Intensive Care Units

Aim To study the effect of Rutoside (Ru) on pancreatic acinar cell apoptosis in rats with acute pancreatitis(AP). Methods The AP model in rats was induced by retrograde injection of 3% sodium taurocholate into biliopancreatic duct. Ru (15, 30 and 60 mg?kg~ -1 ?h~ -1 )was administered by intravenous infusion for 6 hours immediately after the induction of AP.The histopathological changes of pancreas were observed under light microscope and electronic microscope.A terminal deoxynucleotidyl transferase-mediated dUTP-biotion nick end labeling(TUNEL) method was used to detect apotosis of pancreatic acinar cell and apoptosis immunohistochemical method. Results Ru (15, 30 and 60 mg?kg~ -1 ?h~ -1 ) improved the histopathological changes of pancreas significantly.The apotosis index of pancreatic acinar cells was significantly higher than that the AP model group. The gray value of Fas was lower than that of the AP model group. Immuno-staining revealed that moderate to strong FasL immunoreactivity was present in the cytoplasm of the acini of all groups.But in AP model group,the gray value of FasL was lower than that in Ru-treated groups.AI was positively correlated with the gray value of Fas,and was negatively correlated with the gray value of FasL and the severity of pancreas damages. Conclusion The protective effect of Ru on AP may be concerned with the induction of apoptosis in injured pancreatic acinar cells.And the Fas/FasL system may contribute to the process.

OBJECTIVETo assess the exposure level of total N-nitroso compounds (TNOCs) in the residents of high- and low-risk areas for esophageal cancer in southern China.

METHODSSamples of duplicate plate diets and 12 hr overnight urine were collected from 120 male adults in each of the 2 areas, a high-risk area (Nanao county) and a low-risk area (Lufeng county) for esophageal cancer. The 240 male healthy subjects (35 - 64 years old) were selected by a 3-stage random cluster sampling procedure. Levels of TNOC, N-nitrosamino acids (NAAs) and volatile N-nitroso compounds (VNOC) in the samples were measured by Thermo Energy Analyzer.

RESULTSThe detectable rate (95%) of diet TNOC, daily dietary TNOC intake (4.25 +/- 0.84) micromol/day, 12-hr urinary TNOC excretion levels (1.76 +/- 0.23 ng/12 h) and daily dietary intake of VNOC (266 +/- 31.2 microg/day) in the high-risk area were all significantly higher than those of the low-risk area. Oesophageal cancer mortality rates were positively and significantly associated with daily dietary TNOC intake and 12-hr urinary TNOC excretion. Urinary NAAs excretion levels were not different in the two areas.

CONCLUSIONThe results suggest that TNOCs may be implicated in the etiology of esophageal cancer in southern China.

Adult ; China ; Esophageal Neoplasms ; etiology ; mortality ; Humans ; Male ; Middle Aged ; Nitroso Compounds ; administration & dosage ; adverse effects ; urine

We are reporting in this article some analyzed data obtained from inspection and related information on current situations medical devices in use. Some ideas and suggestions are also proposed here on how to systematically and legally inspecting and monitoring medical devices in use.
Equipment Safety ; Materials Management, Hospital

Objective To screen the mutation and analysis its characteristics of SPG4 and SPG3A in Chinese patients with hereditary spastic paraplegia (HSP).Methods Mutation and polymorphism of the SPG4 and SPG3A were screened in the index eases of 26 autesomal dominant families (AD-HSP) and 30 sporadic cases by combination of DHPLC and sequencing analysis, then the index cases of 26 AD-HSP were further confirmed with direct sequencing.Results One novel mutation of SPG4, 1616 + 1g→t, was identified in the index ease from an AD-HSP family.Three symptomatic patients and 2 pre-symptomatic patients were found in this family by sequencing analysis.No mutation of SPG3A was detected.In addition, 8 novel SPG4 polymorphisms and 3 novel SPG3A polymorphisms were identified.Conclusions The study has broadened the mutation and polymorphism spectrums of SPG4 and SPG3A.Mutation of these two genes is less common in this group of patients.

BACKGROUND:Type 1 diabetes mel itus is an autoimmune disease, which is characterized as the selective destruction of pancreatic beta cel s in the body, resulting in the lack of insulin secretion. Umbilical cord blood stem cel s have the potential to differentiate into islet cel s in vitro and in vivo, which play a certain hypoglycemic effect. OBJECTIVE:To explore the effects of umbilical cord blood stem cel s on blood glucose levels and PDX-1 and MafA levels in the pancreatic tissue of type 1 diabetic rats. METHODS:Thirty Sprague-Dawley rats were randomly divided into three groups, with 10 rats in each group. In treatment and model groups, type 1 diabetes mel itus modes were established. After modeling, the treatment group was given a single tail vein injection of umbilical cord blood stem cel s;the normal control group was given the same volume of normal saline;the model group was given the same volume of umbilical cord blood stem cel buffer solution. Oral glucose tolerance test was adopted to assess the islet function of rats;hematoxylin-eosin staining was used to observe the pancreatic morphology of rats;western blot and PCR methods were employed to detect expressions of PDX-1 and MafA in pancreatic tissues at protein and mRNA levels. RESULTS AND CONCLUSION:(1) Compared with the normal control group, the levels of blood glucose in the model and treatment groups were significantly higher at 0, 30, 60, 90 minutes (P<0.05). At 120 minutes, the blood glucose level in the model group was significantly higher than that in the normal control group (P<0.05), but there was no difference between the treatment and normal control groups (P>0.05). (2) The number of islets in the model group was decreased, and the boundary was unclear and irregular;in the treatment group, the number of islets was decreased, but the boundary was stil clear. (3) The expressions of PDX-1 and MafA in the treatment group were similar to those in the normal control group (P>0.05), but significantly higher than those in the model group (P<0.05). These findings suggest that the umbilical cord blood stem cel transplantation can significantly reduce the blood glucose levels in type 1 diabetic rats, improve the function of islet and morphology of pancreas, and up-reuglate the expressions of PDX-1 and MafA.

BACKGROUND:Thrombospondin-1 is an important endogenous activator of transforming growth factor beta 1 in this experimental inflammatory kidney disease model. Transforming growth factor beta 1 is considered the major cytokine that causes tissue fibrosis in many different inflammatory disease processes, in particular in renal disease.
OBJECTIVE:To investigate the expression of thrombospondin-1 on renal fibrosis in rats.
METHODS:Healthy male Sprague-Dawley rats were randomly divided into sham surgery group and model group. In themodel group, right ureters of rats were ligated to construct models of renal fibrosis. 3 weeks after surgery, blood and urine were obtained weekly. Enzyme linked immunosorbent assay and Bradford method were used to detect the contents of serum creatinine,blood urea nitrogen and urinary protein. After rats were sacrificed, kidneys were fixed. Western blot assay was utilized to identify the expression of vascular endothelial growth factor, transforming growth factor beta 1 and thrombospondin-1 protein. Hematoxylin-eosin staining was applied to detect the changes in pathological structure of the kidney after surgery.
RESULTS AND CONCLUSION:(1) One week after model induction, urinary protein, serum creatinine and urea nitrogen levels were significantly higher in the model group than in the sham surgery group (P< 0.05). Three weeks later, the difference in each index was significant (P< 0.01), which showed that the injury of the kidney was aggravated. (2) Transforming growth factor beta 1 protein and thrombospondin-1 expression was significantly higher in the model group than in the sham surgery group, but vascular endothelial growth factor protein expression was significantly lower in the model group than in the sham surgery group. (3) Hematoxylin-eosin staining results demonstrated that severe pathological changes of renal tissue in rats were detected after ligation of renal tubule. (4) These results confirmed that thrombospondin-1 expression increased in renal tissue, and its expression was strongly associated with vascular endothelial growth factor protein and transforming growth factor beta 1, which may play an important role in the renal fibrosis.

BACKGROUND:Common strategies for preventing diabetic nephropathy include effective control of blood sugar and blood pressure, inhibition of the rennin-angiotensin system and lipid-lowering therapy, but it is often difficult to get the desired results. OBJECTIVE:To investigate the effect of transplantation of bone marrow mesenchymal stem cels on levels of blood glucose and urinary total protein in diabetic nephropathy rats. METHODS: Forty-five Sprague-Dawley rats were randomly divided into three groups (n=15 per group): normal control group, diabetic nephropathy group and stem cel transplantation group. Rats in the diabetic nephropathy and stem cel transplantation groups were given single use of 60 mg/kg streptozotocin to make diabetic nephropathy models. The same dose of citric acid-sodium citrate buffer was injected in the normal control group. After modeling, 200μL of bone marrow mesenchymal stem cel solution (2×106) was injected into the left ventricle of rats in the stem cel transplantation group, and then at 7 days after the first transplantation, the cel transplantation was conducted again. The same dose of serum-free L-DMEM was injected intracardialy into the rats in the normal control and diabetic nephropathy groups. Levels of urinary total protein and blood glucose were detected. RESULTS AND CONCLUSION:At 1, 4, 8 weeks after treatment, the urinary total protein and blood glucose levels were significantly higher in the stem cel transplantation group and diabetic nephropathy group than the normal control group (P < 0.05). At 1 week after treatment, the urinary total protein and blood glucose levels were significantly lower in the stem cel transplantation group than the diabetic nephropathy group (P < 0.05). At 4 and 8 weeks after treatment, the total urinary protein and blood glucose levels were slightly higher in the diabetic nephropathy group than the stem cel transplantation group, but there was no significant difference (P > 0.05). These findings indicate that bone marrow mesenchymal stem cel transplantation in diabetic nephropathy rats can get good results in a short period, significantly improve the blood glucose and urinary total protein levels, but the long-term treatment effect is poor.

Objective To understand the prevalence,drug resistance and clinical features of children with acute lower respiratory tract infection(ALRI) caused by escherichia coli.Methods From Oct. 2005 to Oct. 2006,659 patients with ALRI who were admitted to hospital were chosen and their nasopharyngeal secretions were obtained and cultured.K-B disc diffusion for antibiotic susceptibility were performed for these clinical isolates.Results Among 659 patients,118 cases were isolated escherichia coli,the rate was 17.99% which had 90 boys and 28 girls.Eighty-seven of 118 E.coli strains were with extended-spectrum ?-lactamase(ESBLs),the rate was 73.73%.All of strains were sensitive to imipenem.For ESBLs-producing strains,the ratio of resistance tocefotaxime,ceftriaxone,cefuroxime,ampicillin,piperacillin were 78.81%,73.73%,73.73%,76.27%,78.81%,respectively.Conclusions The positive rate of ESBLs producing E coli in Kunming area is high and drug resistance is severe gradually.Imipenem can be the first selection for treatment on these infections.