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41.

Objective

There has been much research on hepatic ischemia and reperfusion by means of short or longer interruption of the portal triad. The aim of this work was to evaluate the mitochondrial respiratory activity and liver histology at 2 different times after the Pringle maneuver.

Methods

Twenty-eight male Wistar rats, weighing ~308 g, with histologic and mitochondrial study: immediate ischemic group (IIG; 40 minutes; 9 animals) and late ischemic group (LIG; 28 days; 9 animals). The rats were anesthetized and underwent a U-incision in the abdomen. In a simulated operation, manipulation of the hepatic pedicle was performed (5 animals immediate [ISG] and 5 late [LSG]). The hepatic pedicle was clamped for 20 minutes of ischemia foloowed by 20 minutes of reperfusion. The animals were killed under anesthesia.

Results

Mitochondria when stimulated by adenosine diphosphate or carbonylcyanide p-trifluoromethoxyphenylhydrazone had a significant respiratory reduction (P < .001). The respiratory control ratio in the LIG was altered (P < .02) compared with IIG. In the resting state, there was no change in the velocity of respiration between ischemic groups. Histopathologic findings showed 55.5% sinusoidal dilatation in IIG and 66.6% in LIG; 77.7% ballooning in IIG and 55.5% in LIG; and 11.1% focal necrosis in both IIG and LIG.

Conclusions

The oxidative phosphorylation system recovered with improvement in mitochondrial respiration; however, morphologic recovery was associated with the type and intensity of injury.  相似文献   
42.

Background

The aim of this study was to revise the histopathologic types of neoplasias in the genitourinary tract and determine the frequency of 2 new entities included in the 2016 book of World Health Organization classification of renal tumors. It is not established so far whether these 2 recently described tumors are the most frequent in association with end-stage kidney disease.

Methods

In a retrospective analysis, we revised the histopathologic type of 37 genitourinary tumors from 21 patients in dialysis and/or submitted to renal transplantation from 2003 to 2016 aiming to find the frequency of acquired cystic disease–associated renal cell carcinoma and clear cell papillary (tubulopapillary) renal cell carcinoma.

Results

From the total of 37 tumors, 34 were from native end-stage kidneys, 1 from the pelvis of the transplant kidney, and 2 from the urinary bladder. The frequencies from native kidneys were: papillary carcinoma, 13/34 (38.2%); papillary adenoma, 9/34 (26.5%); acquired cystic disease–associated renal cell carcinoma, 4/34 (11.8%); oncocytoma, 3/34 (8.8%); conventional clear cell renal cell carcinoma, 3/34 (8.8%); and clear cell papillary (tubulopapillary) renal cell carcinoma, 2/34 (5.34%). The pelvis and urinary bladder tumors were high-grade urothelial carcinomas. The patients with urinary bladder tumors had been treated for polyomavirus infection.

Conclusions

The frequencies of acquired cystic disease–associated renal cell carcinoma and clear cell papillary renal cell carcinoma were 11.8% and 5.9%, respectively. However, the spectrum of adenoma/carcinoma papillary tumors composed the majority, 64.7%, of tumors.  相似文献   
43.

Intoduction

Infection by cytomegalovirus (CMV) is a major cause of morbidity among immunosuppressed patients, especially after solid organ transplantation. The risk of CMV after organ transplantation is strongly related to the serology of the donor and the recipient. The objective of this study was to analyze the outcomes and costs of pre-emptive therapy in patients after liver transplantation with donor-positive/recipient-negative (D+/R?) serostatus.

Methods

This retrospective study analyzed all patients who underwent liver transplantation with CMV serostatus D+/R? between January 2012 and December 2015. The service protocol adopts pre-emptive therapy. The outcomes and costs of this therapy are described.

Results

Of the 119 patients undergoing liver transplantation, 19 were D+/R? and entered the main analysis. Of these, 7 had positive polymerase chain reaction (PCR) results, and 1 developed CMV disease. Of the 6 patients who received no treatment, none developed CMV disease. Analyzing costs, pre-emptive therapy for these patients generated service savings of R$32,346.00.

Conclusions

Although outcomes of universal prophylaxis and pre-emptive therapy are similar, pre-emptive therapy save on costs and have to be considered in patients with high-risk CMV disease after liver transplantation.  相似文献   
44.
目的:研究中心体相关蛋白55(centrosome associated protein 55,CEP55)在胆管癌组织和细胞中的表达情况,通过敲低CEP55研究其对胆管癌细胞增殖的影响。方法:通过RT-PCR、Western blot、免疫组化研究CEP55在胆管癌组织及细胞系中的表达情况,通过体外CCK8、平板克隆、EDU等功能实验研究敲低CEP55对胆管癌细胞增殖的影响。结果:CEP55在胆管癌组织和细胞系中均高表达,细胞功能实验显示敲低CEP55可降低胆管癌细胞的增殖能力,临床预后分析显示CEP55表达量高的患者预后较差。结论:CEP55在胆管癌组织和细胞中高表达,可促进胆管癌细胞的增殖能力,CEP55表达量高的患者预后较差。  相似文献   
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48.
BackgroundWeaning a patient from mechanical ventilation is a complex procedure that involves clinical and contextual aspects. Mechanical ventilation also depends on the characteristics of health professionals who work in intensive care.ObjectiveThis study described the organizational aspects associated with the physical therapist's performance in the weaning procedure from mechanical ventilation and extubation in neonatal, pediatric and mixed (neonatal and pediatric) intensive care units in Brazil.MethodsIn order to identify the existing intensive care units in Brazil, data from the National Health Facilities Census was used to enable the researchers to obtain information about registered units. A cross-sectional survey was carried out by sending an electronic questionnaire to 298 neonatal, pediatric and mixed intensive care units in Brazil.ResultsThis study assessed questionnaires from 146 intensive care units (49.3% neonatal, 35.6% pediatric and 15.1% mixed). A total of 57.5% of these units applied mechanical ventilation weaning protocols, and a physical therapist frequently conducted this procedure (66.7%). However, the clinician responsible for conducting the weaning and deciding when to do extubation varied regardless of ICU patient age profile. Regardless of the type of hospital or the type of units, most of these had a dedicated physical therapist. However, physical therapy care 24 h/7 days per week was predominantly in pediatric intensive care units (56.0%), and in public hospitals (45.9%). Moreover, when the physical therapist was available 24 h/7 days per week, (s)he was responsible for the mechanical ventilation extubation decision and patients were successfully extubated on the first attempt.ConclusionIn this survey, intensive care units using physical therapy assistance 24 h/7 days per week were associated with the use of a mechanical ventilation weaning protocol, an extubation decision and success commonly on the first attempt of extubation.  相似文献   
49.
ObjectiveThe purpose of our study was to evaluate the effect of manually assisted lumbar spinal manipulation therapy on tactile allodynia, peripheral nerve functional recovery, and oxidative markers in rats exposed to knee immobilization-inducing hypersensitivity.MethodsTactile allodynia and sciatic, tibial, and peroneal functional indices were assessed before the knee joint immobilization, 24 hours after the knee cast removal, and 24 hours after 3 weeks of lumbar therapy with the Activator Adjusting Instrument, model 4 (AAI 4). Subsequently, the blood was collected from each rat, and oxidative markers such as lipid hydroperoxide levels; nitric oxide metabolites; and superoxide dismutase, catalase, and glutathione peroxidase activities were assessed.ResultsThe AAI 4 improved the immobilization-induced allodynia and recovered the peripheral nerve functional indices impaired after knee immobilization. Immobilized rats treated with AAI 4 therapy presented a lack of significant changes in lipid hydroperoxides and nitric oxide metabolites in the plasma contrasting with rats that were kept freely in their cages, with no therapy applied, which presented elevated lipid hydroperoxides levels. Also, the antioxidant catalase enzymatic activity decreased in the blood of rats immobilized and treated with AAI 4.ConclusionThese results suggest that manually assisted lumbar spinal manipulation therapy modulates systemic oxidative stress, which possibly contributes to the analgesia and recovery of peripheral nerve functionality.  相似文献   
50.
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