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排序方式: 共有9113条查询结果,搜索用时 15 毫秒
51.
Alobeid B Pan LX Milligan L Budel L Frizzera G 《American journal of clinical pathology》2004,121(1):43-50
We describe 3 patients who had oral mucosal lesions with features of traumatic eosinophilic granuloma (TEG) and containing CD30+ atypical cells. In 1 patient, the oral lesion was followed by skin nodules. All lesions were evaluated histologically, by immunohistochemical analysis, and by polymerase chain reaction (PCR) analysis of the T-cell receptor (TCR) gamma chain gene. All oral lesions were characterized by a dense and deeply infiltrative lymphoproliferation, showing epitheliotropism and massive eosinophilia. They contained atypical large lymphoid cells, which expressed T-cell markers and CD30. PCR analysis showed a monoclonal rearrangement of the TCR gamma chain gene in all lesions and, in 1 patient, the same rearrangement in the oral and cutaneous specimens. The lesions in these patients seem to be the oral counterpart of the spectrum of primary cutaneous CD30+ lymphoproliferative disorders and should be recognized as such to avoid a diagnosis of large T-cell lymphoma and possible consequent overtreatment. However, they represent only a subset among several others within the complex and heterogeneous category of disorders referred to as TEG. 相似文献
52.
A. Canessa V. Del Bono P. De Leo N. Piersantelli A. Terragna 《European journal of clinical microbiology & infectious diseases》1992,11(2):125-130
Twenty-four consecutive HIV-positive patients affected byToxoplasma gondii encephalitis received trimethoprim-sulfamethoxazole (cotrimoxazole) as acute-phase treatment. Two dosage regimens of cotrimoxazole were used: 40 mg/kg/day (12 patients) or 120 mg/kg/day (12 patients) of total compound (trimethoprim plus sulfamethoxazole). Clinical and radiological responses to treatment were evaluated, and the product-limit method for survival data analysis was used. Eighteen of 24 patients showed both a clinical and radiological response (75 % response rate). There were no differences in response rates between patients receiving the two dosage regimens of cotrimoxazole. Adverse reaction consisted of leukopenia (two cases) and skin rash (three cases) which led to the discontinuation of the drug in one case. These results suggest that a randomized, controlled clinical trial should be carried out comparing cotrimoxazole versus sulfadiazine-pyrimethamine in AIDS patients withToxoplasma gondii encephalitis.Deceased. 相似文献
53.
54.
Travis BR Marzec UM Leo HL Momin T Sanders C Hanson SR Yoganathan AP 《Annals of biomedical engineering》2001,29(8):657-664
The clinical histories of the Medtronic Parallel (MP) and St. Jude Medical (SJM) Standard valves suggest pivot geometry influences the thrombogenic characteristics of bileaflet prostheses. This work studied the effects of various pivot geometries on markers of platelet damage in a controlled, in vitro apparatus. The Medtronic Parallel valve, two St. Jude Medical valves, and two demonstration prostheses were used to study the effects of bileaflet pivot design, gap width, and size on platelet secretion and anionic phospholipid expression during leakage flow. A centrifugal pump was used to drive blood through a circuit containing a bileaflet prosthesis. Samples were taken at set time intervals after the start of the pump. These samples were analyzed by cell counting, flow cytometry, and enzyme-linked immunosorbant assay. No significant differences were observed in platelet secretion or anionic phospholipid expression between experiments with the SJM 27 Standard regular leaker, the SJM 20 regular leaker, and the MP 27 valves. Significant differences in platelet secretion and anionic phospholipid expression were observed between a SJM 27 Standard regular leaker and a SJM 27 high leaker valve. These studies suggest that leakage gap width within bileaflet valve pivots has a significant effect on platelet damage initiated by leakage flow. © 2001 Biomedical Engineering Society.
PAC01: 8719Uv, 8719Tt, 8380Lz, 8768+z 相似文献
55.
Gerda T. Noordhoek Sitha A. Scheltinga Paul Caesar Leo M. Schouls John E. Degener 《Clinical microbiology and infection》1997,3(3):356-364
Objective: To apply PCR-based DNA fingerprinting in a clinical microbiology laboratory to investigate nosocomial infections with Staphylococcus haemolyticus.
Method: DNA fingerprints were generated by PCR on 99 S. haemolyticus isolates using different primer combinations based on ERIC, REP or arbitrarily chosen simple repeat sequences.
Results: Primer combinations REP1+(GTC)6 and ERIC1+ERIC2 had sufficient discrimatory power and were chosen to analyze the clinical isolates. DNA fingerprint patterns from strains isolated from the patients nursed in the same hospital ward in the period 1991–94 were approximately 90% similar to each other. One staff member, sampled in 1991, carried a strain with a similar fingerprint.
Conclusions: PCR based DNA fingerprinting is a suitable method to perform in a clinical laboratory. An S. haemolyticus strain appeared to be endemic in the hospital ward and had most probably been transmitted from patient to patient. S. haemolyticus may carry glycopeptide resistance and needs attention as a causative agent of nosocomial infections. 相似文献
Method: DNA fingerprints were generated by PCR on 99 S. haemolyticus isolates using different primer combinations based on ERIC, REP or arbitrarily chosen simple repeat sequences.
Results: Primer combinations REP1+(GTC)
Conclusions: PCR based DNA fingerprinting is a suitable method to perform in a clinical laboratory. An S. haemolyticus strain appeared to be endemic in the hospital ward and had most probably been transmitted from patient to patient. S. haemolyticus may carry glycopeptide resistance and needs attention as a causative agent of nosocomial infections. 相似文献
56.
Martina C. Cornel Anthonie J. van Essen Leo P. ten Kate 《American journal of medical genetics. Part A》1992,42(3):387-392
After the birth of a child with a congenital anomaly, parents have many questions about cause, prognosis, and recurrence risk. An important means of transmitting such information is referral to a genetic clinic. We were interested in knowing what determines whether or not parents are referred for genetic counseling. Data from the local registration of congenital anomalies in the northeastern Netherlands (birth years 1981–1986; 1,217 children/fetuses) and data of the local genetic clinic were compared. The parents of 204 cases (16.8%) had been referred for genetic counseling. Of the couples referred, 76% were referred within one year after birth, usually by a pediatrician (48%). Parents of children with a single anomaly, recognized syndrome, or multiple anomalies not recognized as a syndrome were referred in 5%, 43%, and 26% of cases, respectively. Parents of liveborn children who died were referred in 38% of cases, parents of liveborn/still-alive and stillborn children in 13% and 22%, respectively. Previous affected sibs and absence of previous livebirths increased the likelihood of referral. 相似文献
57.
Two techniques for measuring palmar sweating were tested for their sensitivity to a standard anticholinergic agent. The finger sweat-print and palmar sweatweight methods were compared in a double-blind, crossover study by determining their relative sensitivity in detecting the antisweating effects of 0.5 mg of atropine sulfate. The sweat-print method was significantly superior in detecting drug-induced sweat reduction and hypothesized sex differences. 相似文献
58.
Identification of two homologous antigenic peptides derived from L1 HPV-16 and 18 proteins specific for the HLA-B*3901 allele 总被引:1,自引:0,他引:1
Monroy-García A Weiss-Steider B Hernández-Montes J Ortiz-Navarrete VF Bañuelos-Pánuco A Acosta-Araujo A Díaz-Quiñónez A López-Graniel CM Herbert G Granados J de Leo C Silva-López RM Mora-García ML 《Archives of virology》2002,147(10):1933-1942
Summary. In this work we present evidence that the homologous peptides IHSMNSTIL and IHSMNSSIL derived from L1 HPV-16 and 18 proteins
respectively, and with high specificity for the allele HLA-B*3901, according with an algorithm prediction program, induced T cell stimulation in patients with advanced cervical cancer
positive for HPV-16 or 18 infection and for the HLA-B*3901 allele. Interestingly, T lymphocytes derived from a patient with HPV-18 infection and stimulated with the peptide IHSMNSTIL
were capable to kill a cervical cancer cell line named Rova, derived from the tumor of the same patient. In addition, the
cytotoxic activity was strongly increased when this cell line was previously treated with hrIFN-γ. These results suggest that
the CTL immune response to L1 HPV-16 and 18 protein derived epitopes is maintained in patients with advanced cervical cancer
within specific alleles, and opens the possibility that homologous epitopes may be used in the generation of prophylactic
vaccines for cervical tumors bearing different HPV-types.
Received March 4, 2002; accepted May 20, 2002 相似文献
59.
Transformation of the cultivated mushroom Agaricus bisporus (Lange) using T-DNA from Agrobacterium tumefaciens 总被引:4,自引:0,他引:4
Agrobacterium tumefaciens is known to transfer parts of its tumor-inducing plasmid, the T-DNA, to plants, yeasts and filamentous fungi. We have used
this system to transform germinating basidiospores and vegetative mycelium of a commercial strain of the cultivated basidiomycete
Agaricus bisporus. Analysis of transformants shows that the T-DNA integrates at random sites into the host genome and that the selection marker
is stable during mitosis and meiosis. The Agrobacterium system allows the transformation of both homokaryons and heterokaryons of A. bisporus. Also, both karyotypes of an heterokaryon can be transformed simultaneously. Furthermore, this is the first report on the
transformation of vegetative mycelium of a commercial strain of A. bisporus.
Received: 6 June 2000 / Accepted: 10 October 2000 相似文献
60.
OBJECTIVE: To assess the effects of bilateral oophorectomy on the resting ECG and whether they regress with estrogen replacement therapy. STUDY DESIGN: Twenty-six premenopausal and 15 postmenopausal women were enrolled in the present study. All women had undergone hysterectomy and bilateral ovariectomy. All women underwent 12-lead ECG on admission to hospital. A second ECG was recorded 20-25 days after surgery. After this second ECG, premenopausal women were randomly divided into two groups. The women of Group A (n=14) received transdermal ethinyl estradiol (EE). The women of Group B (n=12) did not receive any therapy. A third ECG was performed in both groups 30-35 days after randomization. RESULTS: Bilateral oophorectomy did not induce any significant modifications in the ECG parameters of the postmenopausal women whereas in the premenopausal women, we observed a significant increment in mean duration of the T wave, a significant decrease in its amplitude and significant reduction in ST depression in V2, V3, V4 and V5. The third ECG showed regression of the ECG modifications in Group A. In the women of Group B, the second and third ECGs were not substantially different, but there were statistically significant differences between the first and third ECGs. CONCLUSIONS: The results of the present study show that ovariectomy induces significant though not clinically evident modifications in resting ECG. These ECG changes are probably due to the sudden reduction in sex hormone plasma levels after ovariectomy. Administration of estradiol induced regression of the ECG modifications. 相似文献