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排序方式: 共有97条查询结果,搜索用时 15 毫秒
1.
TAMPIER LUTSKE; QUINTANILLA MARIA ELENA; MARDONES JORGE 《Alcohol and alcoholism (Oxford, Oxfordshire)》1994,29(6):751-755
In order to explore the influence of acetaldehyde (AcH) metabolismon the voluntary ethanol intake of genetically low (UChA) andhigh (UChB) ethanol consumer rats, the AcH disappearance rate(ADR) after incubation with homogenates and subcellular fractionsfrom liver and brain was determined. In addition, the effectof disulfiram pretreatment on AcH metabolism was studied. Maleadult rats of both strains were used. ADR was assayed in totalhomogenates, and in mitochondrial as well as 9000 g supernatantfractions of liver and brain. AcH was measured by gas chromatography.In some experiments, rats were pretreated with disulfiram (300mg/kg po) 24 hr before the studies. The result showed no straindifference in ADR in homogenates or subcellular fractions ofliver from untreated rats, but for disulfiram pretreated ratsa significantly lower decrease of ADR in samples from UChB comparedto UChA rats was observed. This result is consistent with alower peak AcH level in UChB compared to UChA rats after a loadof ethanol (60 mmole/kg ip). Concerning brain homogenates, ahigher ADR was observed in homogenates and crude mitochondrialfractions of UChB than of UChA rats. This difference was notobserved when the incubation was performed without adding NADor in the absence of oxygen. These results provide evidenceof strain differences in mitochondrial AcH metabolism, the natureand origin of which deserve further study. 相似文献
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MARÍA ELENA FERRO MIRIAN GALMARINI CLELIA M. RIERA 《American journal of reproductive immunology (New York, N.Y. : 1989)》1986,11(4):112-117
ABSTRACT: The injection of the spleen mononuclear (SpM) cells, obtained from rats rendered unresponsive to autoantigen of rat male accessory glands (RAG) by pretreatment with low doses of purified fraction of RAG (containing the autoantigen), into normal syngeneic recipients markedly prevented the development of delayed type hypersensitivity (DTH) reaction to the autoantigen (suppression of the induction) (p < 0.001). The humoral response was not altered. The control animals were rat receptors of spleen mononuclear cells from donor rats pretreated with rat lung saline extract or 0.15 M NaCl. In contrast, the transference of SpM cells from donor rats pretreated with low doses of autoantigen prior to the immunization to rats previously immunized, did not modify the expression of the immune response against the autoantigen when compared with control rats. The suppression of the induction of DTH response was also obtained when prior to the immunization, the recipients received T-cell-enriched SpM cell population from unresponsive animals (p < 0.001), but not when they were injected with B-cell-enriched SpM cells. These results suggest that suppressor T cells capable of controlling induction of the autoimmune response against RAG autoantigen might be one of the immunoregulatory mechanisms that are activated when soluble autoantigen of RAG enter into circulation. 相似文献
4.
Autoantibodies against β1‐Adrenergic Receptors: Response to Cardiac Resynchronization Therapy and Renal Function 下载免费PDF全文
ANTONIO MICHELUCCI M.D. MARIO MILCO D'ELIOS M.D. ELENA STICCHI Ph.D. PAOLO PIERAGNOLI M.D. GIUSEPPE RICCIARDI M.D. CINZIA FATINI Ph.D. MARISA BENAGIANO Ph.D. ELENA NICCOLAI Ph.D. ALESSIA GRASSI M.Sc. PAOLA ATTANÀ M.D. MARTINA NESTI M.D. GINO GRIFONI M.D. LUIGI PADELETTI M.D. ROSANNA ABBATE M.D. DOMENICO PRISCO M.D. 《Pacing and clinical electrophysiology : PACE》2016,39(1):65-72
5.
ELENA PASQUAL MARSETTIN M.D. Senior Registrar NICOLA CIAVARELLA M.D. Director CATERINA LOBACCARO M.D. Psychiatrist ALESSANDRO GHIRARDINI M.D. RINO BELLOCCO Statistician NICOLA SCHINAIA M.D. 《Haemophilia》1995,1(4):255-261
This study aimed to assess the psychological status of men with haemophilia and HIV infection and to monitor changes in psychlogical status over time, in order to evaluate the need for psychological support. The study included 24 HIV seropositive men and a control group of 21 HIV seronegative men who attended the Haemophilia Centre in Bari (Italy). Subjects underwent psychological tests (STAl-Y: State and Trait Anxiety Inventory; SDS: Self-Rating Depression Scale) and completed a questionnaire on the emotional impact of AIDS. Assessment was repeated at 6-monthly intervals over a 2-year period. Contrary to expectation, HIV seronegative men with haemophilia had worse anxiety and depression scores, reported more confusion and fear, and had more reluctance towards the use of blood products (despite their present safety) than HIV seropositives. Possible reasons for these findings are considered, and their implications for clinical practice discussed. 相似文献
6.
Ca2+稳态平衡的调节在少突胶质细胞功能和存活中起重要作用.大麻素CB1和CB2受体在许多细胞中调节Ca2+水平和/或K+电流.本文利用培养的少突胶质细胞中,通过增高细胞外K+浓度(50 mM诱导膜去极化,研究大麻素复合物在此过程引发钙内流中的作用.CB2受体激动剂ACEA导致去极化诱导的少突胶质细胞胞浆的Ca2+瞬变表达浓度依赖性抑制,最大效应为(94±3)%,半效应浓度(EC50)为(1.3±0.03)μM.这种作用可被CB2/CB2激动剂CP55、940、内源性大麻素类AEA和2-AG所模拟,但是CB2受体选择性激动剂JWH133没有作用.CB2受体拮抗剂AM251(1μM)也可减少细胞外高K+诱导的Ca2+反应.但不能防止ACEA(3 μM)诱发的抑制效应.然而,ACEA和AEA减少去极化诱导的Ca2+瞬变的能力在CB2受体敲除小鼠和经百日咳毒素预处理的少突胶质细胞中明显降低.内流性K2+通道阻断剂BaCI:(300 μM)和CsCl2(1 mM)降低电压诱导的Ca2+内流并部分阻断ACEA的抑制效应.本文表明,大麻素抑制少突胶质细胞中去极化诱导的Ca2+瞬变是通过包括PTX-敏感的Gi/o蛋白和阻断K2+内流通道的CB2受体依赖性和非依赖性机制. 相似文献
7.
Severe Spontaneous Echo Contrast/Auricolar Thrombosis in “Nonvalvular” AF: Value of Thromboembolic Risk Scores 下载免费PDF全文
GIOSUÈ MASCIOLI M.D. F.E.S.C. ELENA LUCCA M.D. FEDERICA MICHELOTTI M.D. GIUSY ALIOTO M.D. FRANCO SANTORO M.D. GUIDO BELLI M.D. CRISTINA ROTA M.D. OMBRETTA ORNAGO M.D. GIOVANNI SIRIANNI M.D. EMANUELA PULCINI M.D. MATTEO PENNESI M.D. CARLO SAVASTA M.D. ROSARIO RUSSO M.D. ANTONINO PITÌ M.D. 《Pacing and clinical electrophysiology : PACE》2017,40(1):57-62
8.
CARLO LA VECCHIA SILVIA FRANCESCHI FABIO PARAZZINI ELENA COLOMBO FABIO COLOMBO ALESSANDRO LIBERATI COSTANTINO MANGIONI 《BJOG : an international journal of obstetrics and gynaecology》1983,90(7):654-661
Summary. Between 1970 and 1976, 290 patients with endometrial cancer were treated at the 1st Obstetrics and Gynecology Clinic of the University of Milan. The median age was 62 years. Surgery was completed in 262 (90.3%) patients. Abdominal hysterectomy was used in 158 (70.9%) stage I and 40 (71.4%) stage II/III patients; vaginal hysterectomy in 55 (24.7%) stage I and nine (16.1%) stage II/III patients. Resection of the upper vagina was performed in 168 patients. Postoperative external beam radiotherapy was used in stage II/III patients and in 44 (19.7%) stage I high-risk patients. Ten-year survival, determined by the life-table method, was 84.8% in stage I (223 patients), 53.4% in stage II (37 patients), 64.4% in stage III (19 patients), and 9.1% in stage IV (11 patients). Factors associated with poorer prognosis were: late age at diagnosis (P<0.001); deep myometrial invasion (P<0.001); poorly differentiated histological grade ( P =0.11); lack of resection of the upper vagina ( P = 0.13). The role and importance of surgery is discussed, with special emphasis on the selective use of the vaginal route in aged, obese and medically high-risk patients. 相似文献
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10.
ELENA ARBELO M.D. Ph.D. MARK E. JOSEPHSON M.D. F.A.C.C. 《Journal of cardiovascular electrophysiology》2010,21(4):473-486
VT Ablation in Right Ventricular Dysplasia. Arrhythmogenic right ventricular dysplasia (ARVD) is a genetically determined myocardial disease characterized by fibrofatty replacement of the right ventricular wall. Ventricular tachyarrhythmias can be seen in the early stages of the disease, which is one of the most important causes of sudden death in young healthy individuals. Radiofrequency (RF) catheter ablation is an option for the treatment of medically refractory ventricular arrhythmias and it has shown to successfully abolish recurrent ventricular tachycardias (VT) as well as reduce the frequency in defibrillator therapies. However, variable acute and long‐term success rates have been reported. The current mapping and ablation techniques include activation and entrainment mapping during tolerated VT and substrate ablation using 3‐dimensional electroanatomic mapping systems. This article aims at providing a comprehensive review of RF catheter ablation of ventricular arrhythmias in the context of ARVD. (J Cardiovasc Electrophysiol, Vol. 21, pp. 473‐14, April 2010) 相似文献