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排序方式: 共有322条查询结果,搜索用时 10 毫秒
1.
Jose M. Morales Jose Angel Martinez-Flores Manuel Serrano Maria José Castro Francisco Javier Alfaro Florencio García Miguel Angel Martínez Amado Andrés Esther González Manuel Praga Estela Paz-Artal Antonio Serrano 《Journal of the American Society of Nephrology : JASN》2015,26(3):735-745
In the current immunosuppressive therapy era, vessel thrombosis is the most common cause of early graft loss after renal transplantation. The prevalence of IgA anti–β2-glycoprotein I antibodies (IgA-aB2GPI-ab) in patients on dialysis is elevated (>30%), and these antibodies correlate with mortality and cardiovascular morbidity. To evaluate the effect of IgA-aB2GPI-ab in patients with transplants, we followed all patients transplanted from 2000 to 2002 in the Hospital 12 de Octubre prospectively for 10 years. Presence of IgA-aB2GPI-ab in pretransplant serum was examined retrospectively. Of 269 patients, 89 patients were positive for IgA-aB2GPI-ab (33%; group 1), and the remaining patients were negative (67%; group 2). Graft loss at 6 months post-transplant was significantly higher in group 1 (10 of 89 versus 3 of 180 patients in group 2; P=0.002). The most frequent cause of graft loss was thrombosis of the vessels, which was observed only in group 1 (8 of 10 versus 0 of 3 patients in group 2; P=0.04). Multivariate analysis showed that the presence of IgA-aB2GPI-ab was an independent risk factor for early graft loss (P=0.04) and delayed graft function (P=0.04). There were no significant differences regarding patient survival between the two groups. Graft survival was similar in both groups after 6 months. In conclusion, patients with pretransplant IgA-aB2GPI-ab have a high risk of early graft loss caused by thrombosis and a high risk of delayed graft function. Therefore, pretransplant IgA-aB2GPI-ab may have a detrimental effect on early clinical outcomes after renal transplantation. 相似文献
2.
Adrenergically mediated variations in the energy required to defibrillate the heart: observations in closed-chest, nonanesthetized dogs 总被引:1,自引:0,他引:1
The day-to-day variations in epicardial defibrillation threshold (DFT) were examined in closed-chest, unanesthetized dogs. In 11 animals, DFT decreased from 15.8 +/- 2.1 J (mean +/- SE) at the beginning of the study (day 1), to 7.4 +/- 1.7 J on day 2 (p less than .0001). DFT measured daily for 5 consecutive days in seven dogs decreased from 22.1 +/- 3.1 J on day 1 to 9.3 +/- 2.3 J on day 2 (p less than .01) and remained stable from day 2 to day 5. Transcardiac impedance, measured in six dogs, decreased from 112 +/- 6 omega on day 1 to 100 +/- 6 omega on day 2 (p = NS). Propranolol given on day 2 in 14 dogs increased DFT from 12.0 +/- 2.2 to 18.0 +/- 3.1 J (p less than .05). The effects on DFT of sequential administration of isoproterenol and propranolol were examined in 10 dogs. Isoproterenol decreased DFT from 10.0 +/- 1.9 to 5.5 +/- 1.5 J when given before propranolol (p less than .001, n = 10), and from 11.7 +/- 3.0 to 9.7 +/- 3.1 J when given after propranolol (p less than .05, n = 9). Propranolol increased DFT from 10.6 +/- 3.0 to 14.6 +/- 3.9 J when given before isoproterenol (p less than .02, n = 9), and from 10.7 +/- 1.4 to 14.4 +/- 1.5 J when given after isoproterenol (p less than .01, n = 10). These experiments demonstrate a sustained cardiac effect of epicardial defibrillation reflected by a decrease in DFT that is partially reversible by propranolol.(ABSTRACT TRUNCATED AT 250 WORDS) 相似文献
3.
Bitar R Flores O Reverte M López-Novoa JM Macías JF 《International urology and nephrology》2000,32(2):165-169
This study analysed the effect of low doses ofverapamil added to chronic treatment withangiotensin-converting enzyme (ACE)
inhibitors onblood pressure and serum creatinine levels in eightelderly hypertensive patients who had a steadyincrease of
serum creatinine while on ACE inhibitors.The study was performed in eight elderly hypertensivesubjects, five men and three
women (mean age 70 ±2 years; systolic blood pressure 173 ± 4 mmHg; diastolic blood pressure 99 ± 1 mm Hg) andserum creatinine
of 1.60 ± 0.27 mg/dl beforetreatment. During an average of 25 weeks, ACEinhibitors significantly reduced both systolic anddiastolic
blood pressures, but serum creatinine levelswere increased over basal levels (0,68 ± 0,20 mg/dl, p < 0.05). During an average of 10 weeks,the addition of verapamil did not decrease bloodpressure further, but serum creatinine
levels werereduced to baseline. Our study suggests that theaddition of verapamil to ACE inhibitors can reverseACE-induced
increase in creatinine levels in elderlyhypertensive patients in whom this side effect isobserved.
This revised version was published online in August 2006 with corrections to the Cover Date. 相似文献
4.
Ohne Zusammenfassung 相似文献
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7.
Ana Paula de Oliveira Carnevalli Débora Bevilaqua-Grossi Ana Izabela Sobral Oliveira Gabriela Ferreira Carvalho César Fernández-De-Las-Peñas Lidiane Lima Florencio 《Journal of manipulative and physiological therapeutics》2018,41(7):621-627
Objective
This study aimed to determine the inter-rater and intrarater reliability, agreement, and minimal detectable change (MDC) of the neck muscle strength test using a handheld dynamometer in healthy women and women with headaches.Methods
Neck muscle strength in maximal voluntary contraction was measured using the Lafayette Manual Muscle Testing attached to a nonelastic belt in 25 women with migraines and in 25 healthy women. Three repetitions of flexion, extension, and lateral flexion were performed. The tests were performed by 2 examiners on the same day, with a 10-minute interval, and by 1 examiner, with a 1-week interval. The reliability was verified by the intraclass correlation coefficient, the agreement determined by standard error measurement, and the MDC calculated.Results
The protocol exhibited moderate to excellent intrarater and inter-rater reliabilities in both groups (intraclass correlation coefficientrange, 0.53-0.90). The standard error measurement ranged from 0.43 to 1.81 and the MDC from 1.49 up to 4.61.Conclusion
Quantification of neck muscle strength using the handheld dynamometer with an attached nonelastic belt exhibited moderate to excellent intra- and inter-rater reliability in women with and without migraines. Moreover, the standard error measurement and MDC were proven to be useful in the interpretation of data and in guiding clinical decisions. 相似文献8.
9.
Combination of a long-acting delivery system for luteinizing hormone-releasing hormone agonist with Novantrone chemotherapy: increased efficacy in the rat prostate cancer model. 下载免费PDF全文
A V Schally A I Kook E Monje T W Redding J I Paz-Bouza 《Proceedings of the National Academy of Sciences of the United States of America》1986,83(22):8764-8768
The combination of hormonal treatment based on a long-acting delivery system for the agonist [6-D-tryptophan]luteinizing hormone-releasing hormone ([D-Trp6]-LH-RH) with the chemotherapeutic agent Novantrone (mitoxantrone dihydrochloride) was studied in the Dunning R3327H rat prostate cancer model. Microcapsules of [D-Trp6]-LH-RH formulated from poly(DL-lactide-co-glycolide) and calculated to release a controlled dose of 25 micrograms/day were injected intramuscularly once a month. Novantrone (0.25 mg/kg) was injected intravenously once every 3 weeks. Three separate experiments were carried out. When the therapy was started 45 days after transplantation and continued for 70 days, tumor volume in the presence of the microcapsules (966 +/- 219 mm3) or Novantrone (3606 +/- 785 mm3) given alone was significantly decreased compared to controls (14,476 +/- 3045 mm3). However, the combination of microcapsules and Novantrone caused a greater inhibition of tumor growth (189 +/- 31 mm3) than the single agents. Similar effects were seen when the percent increase in tumor volume was examined. Tumor volume increased 10,527 +/- 1803% for the control group. The inhibition of growth caused by the [D-Trp6]LH-RH microcapsules alone (672 +/- 153% increase in volume) was again greater than that caused by Novantrone alone (2722 +/- 421% increase). The combination of the two agents was again the most effective, resulting in an increase in tumor volume of only 105 +/- 29%. Control tumors weighed 30.0 +/- 6.5 g. Tumor weights were much less in the groups treated with either microcapsules (3.28 +/- 0.69 g) or Novantrone (19.53 +/- 3.3 g) alone. The lowest tumor weights after 70 days of treatment were obtained in the group that received the combination of [D-Trp6]LH-RH microcapsules and Novantrone (1.02 +/- 0.2 g). Testes and ventral prostate weights were significantly diminished by the administration of microcapsules of [D-Trp6]LH-RH alone or in combination with Novantrone. In both of these groups, luteinizing hormone and prolactin levels were reduced and serum testosterone was suppressed to undetectable levels. Similar results were obtained in two other experiments in which the duration of treatment was 60 or 105 days. These results suggest that the overall response could reflect the inhibition of proliferation of hormone-independent cancer cells by Novantrone in addition to the suppressive effect of [D-Trp6]LH-RH on the growth of androgen-dependent tumor cells. The administration of Novantrone in combination with microcapsules of [D-Trp6]LH-RH might produce a better clinical response than LH-RH analog alone in patients with advanced prostate carcinoma. 相似文献
10.
Alberto Monje Jia‐Hui Fu Hsun‐Liang Chan Fernando Suarez Pablo Galindo‐Moreno Andrés Catena Hom‐Lay Wang 《Journal of periodontology》2013,84(12):1783-1791
Background: This meta‐analysis of prospective clinical trials was conducted to determine the effects of dental implant length and width on implant survival rate of short (<10 mm) implants. Methods: An electronic search of the PubMed database for relevant studies published in English from November 1998 to March 2012 was performed. Selected studies were randomized clinical trials, human clinical trials, or prospective trials with a clear aim of investigating the success or survival rate of short (<10 mm) implants. Results: Eight studies fulfilled the inclusion criteria and were subsequently analyzed. A total of 525 short (<10 mm) dental implants were analyzed, of which 253 were 3.5 mm in diameter (48.19%), 151 were 4.0 mm (28.76%), 90 were 4.1 mm (17.14%), 21 were 4.8 mm (4%), and 10 were 5.1 mm (1.9%). All implants included in this meta‐analysis had a follow‐up period of 12 to 72 months. The included studies reported on the survival rate and diameter of the implants. Six of the studies used “short implants” (7 to 9 mm), and the remaining were classified as “extra‐short implants” (≤6 mm). Five‐year estimated failure rates were 1.61% and 2.92%, respectively, for extra‐short and short implants (z = ?3.49, P <0.001, 95% confidence interval = 0.51% to 4.10%). Furthermore, it was found that the wider the implant, the higher the failure rate (estimated failure rate = 2.36%, 95% confidence interval = 1.07% to 5.23%). Conclusions: Neither implant length nor width seemed to significantly affect the survival rate of short implants (<10 mm). Nonetheless, further well‐designed randomized clinical trials are needed to confirm these findings. 相似文献