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KA Scordo 《Canadian Metallurgical Quarterly》1997,9(4):555-564
As an alternative to drug therapy, patients with MVPS must be informed of their many options. As nurses, you can do an excellent job through education, through organization of support groups, and by developing written materials for these patients. In this field, a tremendous challenge with rewarding outcomes awaits you. 相似文献
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Flow cytometry was used to compare the functional status of fluorescently stained sperm organelles from 12 Holstein bulls after storage for 24 h at 5 degrees C and after cryopreservation. The organelle-specific stains, SYBR-14 and LysoTracker Green DND-26, identified spermatozoa with intact plasmalemma and those with intact acrosomes, respectively. The mitochondria-specific stain, 5,5',6,6'-tetrachloro-1,1',3,3'-tetraethylbenzimidazolyl-carbocyan ine iodide (JC-1), identified two populations of spermatozoa. One population stained red-orange because the JC-1 accumulated in the mitochondria as aggregates (characteristic of cells exhibiting a high membrane potential); a second population stained green because of JC-1 monomers within the mitochondria (characteristic of cells exhibiting a lower membrane potential). Analysis of variance revealed that within bulls, the properties of sperm viability, intact acrosomes, and mitochondrial status differed in spermatozoa stored for 24 h (p < 0.001) but not in cryopreserved spermatozoa (p > 0.11). Linear regression analyses resulted in significant models in which the proportions of stained spermatozoa stored for 24 h were indicative of those proportions observed in the cryopreserved fractions. These findings suggest that the plasmalemma, the acrosome, and the mitochondria of unfrozen spermatozoa varied as to their functional status. The cryopreservation process, however, resulted in a more uniform status of sperm organelles. 相似文献
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Urethral prolapse represent a rare cause of urological consultation. Frequent in older women, it also happens in under 10-year-old little girls with a racial predominance. For most cases, medical treatment and follow-up are sufficient, but failure of these or possible complications may necessitate a surgical correction. Circumferential excision and muco-mucous suture are effective treatments with very few complications. About four case-reports, we are reviewing here the literature and discussing etiopathogenic mechanisms and therapeutic options for this disease. 相似文献
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A sensitive method for the quantitative determination of piperazine is described. The method is precise and responds linearly from 25 g to 500 mug and above of the material. The procedure is based on the formation of a complex of piperazine with reineckate in neutral or acid medium. The complex can be separated by centrifugation. It is then dissolved in acetone and estimated at 530 nm in a colorimeter. Piperazine present in trichloroacetic acid extractrs of biological samples can also be estimated by this method. 相似文献
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Vitronectin (VN) is an obligatory cofactor for the inhibition of thrombin by plasminogen activator inhibitor 1 (PAI-1). It accelerates the rate of association between thrombin and PAI-1 more than two orders of magnitude. In contrast, VN does not accelerate the association between tissue-type plasminogen activator (t-PA) and PAI-1. Previously, we reported that the anti-PAI-1 monoclonal antibody (MoAb) CLB-2C8 binds to a short stretch of amino acids of PAI-1, located between residues 128 and 145, and prevents PAI-1 binding to VN. Furthermore, MoAb CLB-2C8 fully blocks the inhibitory activity of PAI-1 towards t-PA, emphasizing the importance of this area for the interaction with t-PA. Here, we show that this area is also required for the interaction between thrombin and PAI-1, since MoAb CLB-2C8 fully prevents inhibition of thrombin by PAI-1. In spite of similar structural requirements for the interaction between t-PA, PAI-1 and VN and between thrombin, PAI-1 and VN, the intermediate reaction products are clearly distinct. By employing surface plasmon resonance (SPR), using the BIAcore equipment, and by immunoprecipitation we demonstrate that, in the presence of VN, t-PA and PAI-1 form exclusively equimolar binary t-PA/PAI-1 complexes. Thrombin, PAI-1 and VN generate equimolar, binary thrombin/PAI-1 complexes and in addition equimolar, ternary complexes and multimers. 相似文献
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During the 1994 crisis in Rwanda, a high incidence of full-thickness rectal prolapse was noted among the refugee children in the south-west of the country. The prolapses arose as a result of acute diarrhoeal illness superimposed on malnutrition and worm infestation. We used a modification of the Thiersch wire technique in 40 of these cases during two months working in a refugee camp. A catgut pursestring was tied around the anal margin under local, regional or general anaesthesia. This was effective in achieving short-term control of full-thickness prolapse until the underlying illness was corrected. Under the circumstances, no formal follow-up could be arranged; however, no complications were reported and only one patient presented with recurrence. 相似文献
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BACKGROUND: The implications and outcomes of patients with an uncleared fundal pool of blood found at emergent upper endoscopy are not well described. METHODS: We reviewed the records of 484 consecutive patients who presented over a 12-month period to our medical center with acute upper gastrointestinal hemorrhage. All patients underwent upper endoscopy within 24 hours of their initial presentation. Patients with an uncleared fundal pool of blood at initial endoscopy were included in this study, and their findings and outcomes were compared with a randomly selected subgroup of these same patients who did not have residual gastric blood. RESULTS: Sixty-one patients (13%) had uncleared fundal pools despite gastric lavage and patient positioning. Findings on initial endoscopy included esophageal varices in 29 (47%), gastric ulcer in 12 (20%), portal hypertensive gastropathy in 5 (8%), Mallory-Weiss tear in 5 (8%), duodenal ulcer in 5 (8%), gastric varices in 4 (7%), Dieulafoy's lesion in 2 (3%), and other in 7 (11%). Twelve of these 61 patients had multiple findings and 4 (7%) had no lesion identified. Thirty-two of the 61 patients (52%) had at least one follow-up endoscopy, with new fundal lesions identified in 13 (41%): portal hypertensive gastropathy in 8, gastric ulcer in 2, gastric varices in 2, and leiomyoma in 1. Of these 13 new findings, 5 (38%) were judged significant either by the presence of active bleeding or stigmata of recent hemorrhage. Of the 4 patients with no identifiable lesion on initial endoscopy, 3 had a follow-up endoscopy and 2 were found to have a significant new finding in the fundus. The control group had a statistically significant lower percentage of endoscopic findings related to portal hypertension. Recurrent bleeding during the index hospitalization occurred in 54% of the patients with uncleared fundal pools versus 11% of the control group (0 < 0.01). Length of stay, number of units of blood transfused, need for emergent surgery for bleeding, as well as overall and bleeding-related mortality were all significantly greater in the patients with the uncleared fundal pool than in the control patients. CONCLUSIONS: The inability to clear a fundal pool of blood at emergent upper endoscopy is associated with significant morbidity and mortality. Further, new fundal lesions can be identified in 41% of patients on follow-up examination, with many being clinically significant. These data support the importance of clearing a fundal pool in patients undergoing endoscopy for upper gastrointestinal bleeding. 相似文献
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We report on a case of recidival rupture of an enterocele with vaginal rupture and incarceration of small bowel. This event was probably caused by an extreme insufficiency of the patient's connective tissue. In literature four similar cases have been reported. 相似文献
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A Salzano G Cavallo A De Rosa F Tesorone L De Luca V Paolella 《Canadian Metallurgical Quarterly》1996,92(1-2):82-86
Defecography (DG) is a useful method to detect many morpho-functional deformities of anus and rectum and pelvic floor. We report on a clinical and radiologic study of 165 patients (36 men and 129 women) suffering from defecation disorders and rectal muscosal prolapse (RMP). All the patients had been submitted to clinical examination, endoscopy and double contrast enema to rule out organic colorectal conditions. DG was performed with a dedicated conmode and high-density barium and videorecorded on VHS cassettes to assess the dynamics of evacuation phases and to reduce exposure doses. DG showed single RMP in 28% of cases and multiple RMP in 72% of cases; the condition was isolated in 22% of cases, while in 88% of cases it was associated with other anorectal dysfunctions, such as rectocele (65%), perineal descent syndrome (PDS) (15%), puborectal muscle syndrome (14%) and intussusception (8%). RMP appeared at DG as a wall defect bulging into rectal lumen, which was more evident under straining and during barium evacuation. In 12 patients with multiple RMP, dynamic CT of the pelvis was carried out to study the whole pelvic floor and in 5 cases it showed levator ani diastasis. Fifty-eight patients were submitted to surgery by elastic binding of RMP; DG follow-up showed RMP remission in 47 patients, single RMP relapse in 3 patients and multiple RMP relapse in 3 patients. One patient with PDS and intussusception was submitted to rectopexy and mucosectom. 相似文献
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AV Lagutin 《Canadian Metallurgical Quarterly》1977,84(9):276-279
Acute experiments were conducted on cats; the stereotaxis method was applied to search for morphological formations whose stimulation led to acute brain prolabination. This effect resulted from stimulation of the area hypothalamic lateralis, zona incerta, zonae H1 and H2, parafascicular, interstitial, and interpeduncular nuclei, and nucleus Darkschevitch. Against the background of the histological picture of acute prolabination, signs of brain edema and swelling were revealed in stimulation of the area hypothalamica lateralis, zone incerta, zonae H1 and H2. 相似文献
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A Zuppiroli 《Canadian Metallurgical Quarterly》1998,28(5):600-602
We report multiple malignancies in four patients with metachronous renal adenocarcinomas. The group of patients includes two women treated for primary breast and ovarian cancer and two men with prostate and colon cancer respectively. The occurrence of renal cancer following these primary solid tumors was not associated with previous treatments. The authors review the literature and discuss pathogenic mechanisms underlying renal cell carcinoma. 相似文献
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HD Moore 《Canadian Metallurgical Quarterly》1977,20(7):566-569
A method of anterior fixation of the bowel in complete prolapse of the rectum is described. The treatment is based on the concept that abdominal pressure should be directed on the bowel against the pubis rather than directly onto the perineum. The results have been universally successful, without mortality and with excellent functional results. 相似文献
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Small fibrin-platelet emboli caused by prolapsed mitral valves may cause retinal occlusive disease with a wide range of ophthalmic manifestations, including amaurosis fugax in young people, retinal or choroidal arteriolar occlusion, and retinal neovascularization (atypical Eales' disease). Six patients with retinal occusive disease underwent extensive noninvasive cardiac and systemic tests and were found to have prolapsed mitral valves. Patients with unexplained ocular emboli should be examined by a cardiologist for possible mitral valve prolapse. 相似文献