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排序方式: 共有1808条查询结果,搜索用时 15 毫秒
1.
Milos Jesenak MD PhD Peter Banovcin MD PhD Zuzana Rennerova MD PhD Lubica Jakusova MD PhD Zuzana Havlicekova MD PhD Vladimir Pohanka MD PhD MPH FCCP Maria Pia Villa MD PhD Roberto Ronchetti MD PhD 《International journal of dermatology》2009,48(9):941-946
Background The atopy patch test (APT) is no longer an experimental method; it is increasingly being used as a standard diagnostic tool for the characterization of patients with aeroallergen- and food-triggered disorders. Some technical aspects of this test still remain to be answered. We aimed to study the reproducibility of this test over time in the general child population.
Methods In a general population of 118 children, we investigated the reproducibility of duplicate APTs with four food allergens in their native form, which were repeated at set intervals from the first test: 7 days (group 1), 14 days (group 2), and 21 days (group 3).
Results We observed very poor reproducibility on both sides of the back in all three studied subgroups. The reproducibility rates and Cohen's κ values did not improve when we did not consider the side of the back. There were no differences in the prevalence of atopy between the subjects with reproducible and nonreproducible APT results. All three groups studied showed no difference in the prevalence rates of atopy. There was no relationship between APT and skin prick test positivity for the same allergen. Questionnaire-derived data about previous food-related reactions did not help in the evaluation of the doubtful nonreproducible APT results with food allergens.
Conclusions Our results show that the reproducibility of food APTs is poor and unsatisfactory over time, and there is an urgent need for the development of optimal, stable, and good-quality APT testing substances. 相似文献
Methods In a general population of 118 children, we investigated the reproducibility of duplicate APTs with four food allergens in their native form, which were repeated at set intervals from the first test: 7 days (group 1), 14 days (group 2), and 21 days (group 3).
Results We observed very poor reproducibility on both sides of the back in all three studied subgroups. The reproducibility rates and Cohen's κ values did not improve when we did not consider the side of the back. There were no differences in the prevalence of atopy between the subjects with reproducible and nonreproducible APT results. All three groups studied showed no difference in the prevalence rates of atopy. There was no relationship between APT and skin prick test positivity for the same allergen. Questionnaire-derived data about previous food-related reactions did not help in the evaluation of the doubtful nonreproducible APT results with food allergens.
Conclusions Our results show that the reproducibility of food APTs is poor and unsatisfactory over time, and there is an urgent need for the development of optimal, stable, and good-quality APT testing substances. 相似文献
2.
Maarten E Tushuizen Mathijs C Bunck Petra J Pouwels Jan Hein T van Waesberghe Michaela Diamant Robert J Heine 《Liver international》2006,26(8):1015-1017
BACKGROUND: Fat accumulation in the liver or non-alcoholic fatty liver disease (NAFLD) is regarded as a key pathogenic factor and component of the metabolic syndrome. It was reported that administration of the incretin mimetic exenatide reversed hepatic steatosis in an obese mouse model. We had the opportunity to study the effect of additional exenatide administration on liver fat content in a patient with type 2 diabetes. CASE REPORT: A 59-year-old male with poorly controlled type 2 diabetes was treated with exenatide in addition to metformin monotherapy. Following 44 weeks of exenatide therapy, mean the liver fat measured by liver spectroscopy declined from 15.8% to 4.3%. This dramatic decrease in liver fat was accompanied by significant beneficial changes in several cardiovascular disease risk factors and improvement of all liver enzymes, in particular alanine aminotransferase, the most important marker of liver steatosis. CONCLUSION: This case report suggests that the incretin mimetic exenatide decreases hepatic fat accumulation and may play a role in the future treatment of NAFLD, and the associated insulin resistance and cardiovascular risk factors in an ever-growing high-risk population. 相似文献
3.
A Oxholm M Diamant P Oxholm K Bendtzen 《APMIS : acta pathologica, microbiologica, et immunologica Scandinavica》1991,99(1):58-64
The presence of human cytokines was examined in parallel skin biopsies and epidermal single cell preparations obtained from normal individuals. Using biotin-avidin-peroxidase and immunofluorescence techniques and antibodies against recombinant cytokines, a granular intercellular/membrane-associated staining for interleukin-6 (IL-6) and tumour necrosis factor alpha (TNF alpha), but not IL-1 alpha or beta, was observed. An epidermal cytoplasmic staining pattern was also detected, which was most pronounced using the anti-rIL-6 antiserum. In the epidermal single cell preparations, membrane-associated staining was detected for both IL-6 and TNF alpha. Double staining revealed that CD1-positive Langerhans cells (LC) failed to express any of the examined cytokines. In vitro binding of rIL-6 or rTNF alpha to skin sections and epidermal single cell preparations indicated that the cell surface-associated IL-6 and TNF alpha originally demonstrated on keratinocytes were truly membrane-bound. Finally, co-cultivation of epidermal cells with an IL-6 responsive cell line, B9, and testing of epidermal cell supernatants in this assay, indicated that the in vivo membrane-bound IL-6 had biological activity. 相似文献
4.
5.
H S Jensen N Tvede M Diamant H H Mogensen M B Hansen B S Thomsen P B Pedersen K Bendtzen 《Scandinavian journal of rheumatology》1991,20(2):83-90
Synovial fluid (SF) and blood from 24 patients with non-traumatic, sterile hydarthron were examined for monocyte elastolysis (M?E) and for levels of interleukin 6 (IL-6) and of soluble interleukin 2 receptor (sIL-2R). Six patients had osteoarthrosis (OA) and 18 patients had inflammatory hydarthron (IH), 10 of whom had rheumatoid arthritis (RA). Blood M?E was lower in OA than in IH, both measured as basal M?E activity and after in vitro stimulation with immune complexes and phorbol myristate acetate (PMA). SF M?E was higher than M?E in blood (p less than 0.01). This increase in SF M?E could be mimicked in vitro by prestimulation of blood M? with low levels of IC. SF IL-6 and sIL-2R were also elevated (p less than 0.01). All three parameters correlated to the degree of joint inflammation evaluated by SF leucocyte level, complement activation, blood C Reactive Protein, and to the clinical evaluation of the joint. The increase in SF M?E, IL-6 and sIL-2R in patients with IH, points to a stimulation of M? and lymphocytes in the joint. 相似文献
6.
Emotional abuse, self-blame, and self-silencing in women with irritable bowel syndrome 总被引:5,自引:0,他引:5
Ali A Toner BB Stuckless N Gallop R Diamant NE Gould MI Vidins EI 《Psychosomatic medicine》2000,62(1):76-82
OBJECTIVE: The purpose of this study was to investigate the presence of emotional abuse and two psychosocial constructs (self-blame and self-silencing) in a sample of women diagnosed with irritable bowel syndrome (IBS) relative to a comparison sample of women diagnosed with inflammatory bowel disease (IBD). METHODS: Women diagnosed with IBS (N = 25) were compared with women diagnosed with IBD (N = 25) on measures of history of abuse, self-blame, and self-silencing. RESULTS: It was found that women in the IBS sample scored significantly higher on emotional abuse, self-blame, and self-silencing than did women in the IBD sample. These three variables were also found to be significantly intercorrelated in both the IBS and IBD samples. Finally, emotional abuse was significantly higher in IBS patients than in IBD patients beyond the differences accounted for by physical and/or sexual abuse history. CONCLUSIONS: These findings empirically demonstrate an association between IBS and emotional abuse, as well as a possible connection with psychosocial variables, that may mediate the connection between emotional abuse and functional bowel symptoms. We suggest that these variables be further evaluated in the context of clinically relevant research on IBS. 相似文献
7.
Viera Vakov Zuzana Hloukov Jaroslav Barto Viera Jurani
ov 《Macromolecular chemistry and physics.》1992,193(3):627-637
The locus of the initiation using the water-soluble radical initiator ammonium peroxodisulfate (APS) and/or the partially water-soluble radical initiator 2,2′-azoisobutyronitrile (AIBN) in the inverse microemulsion system toluene/water (mass ratio 10:1) was studied. The homopolymerization and/or copolymerization of the water-soluble monomer acrylamide (AAM) with the oilsoluble methyl methacrylate (MMA) was investigated. It was found that the locus of initiation by APS in the given system is the water micropool, and the locus of initiation by AIBN is the interlayer between the water micropool and the toluene macrophase. 相似文献
8.
Conclusions The present study of binding of Ca-45 during histamine release could not distinguish between specific uptake of calcium and non-specific equilibration of calcium secondarily to morphological changes in connection with secretion. The results do not exclude a possible role of calcium to trigger secretion, but studies on Ca-45 binding do not seem to give conclusive information as to the functional significance of calcium in the release process. 相似文献
9.
The ionophore X537A induced swelling of isolated rat mast cells parallel to histamine release. Both actions were depressed by extracellular calcium and BSA, temperatures below 37°C, NEM, PMSF, and TTX, and were enhanced by high potassium and pretreatment of the cells with ATP. DSCG, theophylline, and DFP enhanced the histamine release noted after 10 min of incubation without influencing the swelling action of X537A. The swelling action could not be separated from histamine release and it is suggested that it right be inherent in the mechanism of secretion induced by X537A. The present results further distinguish histamine release induced by the two ionophores X537A and A23187. 相似文献
10.
The influence of phosphatidyl serine (PS) on histamine release from isolated rat mast cells induced by antigen, compound 48/80, adenosine-5′-triphosphate (ATP), the ionophore A23187, and decylamine was studied. PS enhanced antigen-induced release but inhibited the release caused by compound 48/80, A23187, and decylamine. PS did not influence the release induced by ATP. The different effects of PS on the action of the various histamine releasing agents do not conform to a unifying model for the action of PS on the release process. Possible interactions between PS and the agents in the incubation medium as well as at specific reactive sites on the plasma membrane might explain some of the effects of PS. Consequently, the results cannot be used as evidence for the existence of basic differences in the release process induced by various calcium-and energy-dependent releasing agents. 相似文献