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Biomedical subjects

G Delgado

Publications and source records attributed to G Delgado.

At least 145 records · Page 8Linked to original sources
PubMed1977

Paraaortic lymphadenectomy in gynecologic malignancies confined to the pelvis.

Eighty-six patients with pelvic malignancies had paraaortic node dissection; 30% had positive paraaortic lymph nodes. At the time of laparotomy, 77 patients had malignancies apparently confined to the pelvis after extensive work-up and histologic examination of tissue biopsies outside the pelvis; 20 (26%) had metastatic cancer in the paraaortic lymph nodes. Thirteen of 49 patients with cancer of the cervix, 5 of 18 with uterine cancer, and 2 of 10 with ovarian cancer had positive paraaortic lymph nodes. The value of paraaortic dissection in patients with pelvic malignancies apparently confined to the pelvis is discussed.

Female↗
PubMed1976

Reticulum-cell sarcoma of the cervix.

Four patients with primary reticulum-cell sarcoma of the cervix were described. One patient was treated with radical hysterectomy and lymphadenectomy. The pelvic lymph nodes contained metastatic cancer and the patient died shortly after disseminating disease. The other three patients were treated with external radiation and vaginal and intrauterine radium application. The complete work-up failed to reveal cancer outside the pelvis or evidence of systemic disease. Two of these patients had an exploratory laparotomy with biopsies of pelvis and para-aortic lymph nodes and of the liver. One of these patients had a splenectomy, with no evidence of disease. Both patients are alive with no evidence of disease 3 and 10 years after their treatment. The third patient treated by radiation therapy died 2 years later with no evidence of disease. The importance of complete staging work-up and the advantage of radiation therapy in the treatment of reticulum-cell sarcoma of the cervix is emphasized.

Adult↗
PubMed1976

Second-look operation in ovarian carcinoma: postchemotherapy.

One hundred and three patients with advanced ovarian cancer underwent a second-look operation following chemotherapy. Patients should have ten or more courses of chemotherapy before second-look operation. Those patients with no evidence of disease at second laparotomy should discontinue their chemotherapy. Patients who continued chemotherapy after the second-look operation did better than those who were treated with radiation after surgery. Only patients with clinical remission benefit from the second-look procedure. Advantages of second-look operations following chemotherapy are discussed.

Dose-Response Relationship, Drug↗
PubMed1975

Scalene node biopsy in carcinoma of the cervix. Pelvic and para-aortic lymphadenectomy.

Twenty-eight patients with advanced untreated carcinoma of the cervix had selective pelvic and para-aortic lymphadenectomy and a scalene fat pad biopsy to determine the extent of their disease prior to treatment. None of these patients had palpable supraclavicular lymph nodes, but 18 had metastatic cancer in one or more pelvic lymph nodes; in the remaining 10 patients, all lymph nodes were free of metastatic cancer. Of the 18 patients with metastatic cancer in the pelvic lymph nodes, 9 also had metastatic cancer in the para-aortic lymph nodes, and 1 had metastatic cancer in a scalene lymph node. This patient had extensive cervical cancer with positive pelvic and para-aortic lymph nodes, unilateral ureteral obstruction, and cancer growing through the posterior culde-sac into the pelvic peritoneum. From this study, it appears that scalene lymph node biopsies are of limited value in evaluating patients with advanced cancer of the cervix. Unless the patient has extensive metastases, scalene lymph nodes rarely contain metastatic cancer.

Biopsy↗
PubMedDate not supplied

Severe and progressive steatosis and focal necrosis in rat liver induced by continuous intragastric infusion of ethanol and low fat diet.

Blood alcohol levels (BAL) were maintained at high levels (overall mean +/- S.D. achieved in 14 alcoholic rats was 216.0 +/- 120.1 mg%) in male Wistar rats for 15 to 85 days by continuous intragastric infusion of ethanol and nutritionally defined low fat liquid diet. The ethanol intake was progressively increased from 32% of total calories up to 41.4% in order to maintain high BAL. Pair-fed animals received isocaloric glucose solution and the liquid diet. Despite the low level of dietary fat (4.9% of total calories), histopathological evaluation of the liver revealed severe and progressive fatty infiltration in the alcoholic rats. In addition, following 30 days of intoxication, one third of the animals showed focal necrosis with mononuclear cell infiltration in centrilobular areas of the livers. This was correlated with the markedly elevated levels of SGOT and SGPT in these animals. Pair-fed controls showed no abnormality in the morphology of liver or blood chemistry. Chemical quantitation of liver triglycerides confirmed the histological observation, with triglyceride levels of 61.51 +/- 16.45 and 89.61 +/- 5.94 mg per gm at 30 and 85 days, respectively. Most importantly, the degree of steatosis was tightly and significantly correlated with the mean BAL achieved (r = 0.80, p less than 0.001). These data represent the first confirmation of the hypothesis that continuously high BAL correlate with the severity of alcohol-induced liver pathology.

Alanine Transaminase↗
PubMedDate not supplied

Natural resistance to mycobacteria: antimicrobial activity and reactive oxygen intermediate releasing functions of murine macrophages.

After infection with Mycobacterium lepraemurium or with M. bovis strain BCG (bacillus Calmette-Guérin), splenic macrophages from mice naturally resistant (NR) to these pathogens (C3H and A/J) spontaneously produced H2O2, whereas splenic macrophages from naturally susceptible (NS) mice (C57BL/6 and Swiss) did not. None of them produced superoxide anion O2-. In addition, NR macrophages had higher levels of superoxide dismutase (SOD) than did NS macrophages. In vivo treatments thought to enhance H2O2 metabolism (phorbol myristate acetate, SOD, Zymosan) decreased M. lepraemurium survival, whereas treatment with diethyl-dithiocarbamate, a potent inhibitor of SOD, had the converse effect. These results favour the hypothesis of a link between natural resistance to BCG (and M. lepraemurium) and H2O2 metabolism, with higher producers being naturally resistant.

Animals↗