Marina Duarte Garcia

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A colony ofAmblyomma parvum was started with engorged females collected from cattle in the Province of Salta (25°01′ S, 63°56′ W), Argentina. The progeny of those ticks were fed on rabbits and the non-parasitic stages maintained at 27±1°C, 83–86% RH in darkness. The life cycle (prefeeding period not evaluated) had a mean duration of 99.6 days. The mean time(More)
BACKGROUND HCAM or CD44 is a multifunctional cell adhesion molecule, related to cell-cell, cell-extracellular matrix interactions and involved in tumor invasion. AIM To study the importance of CD44 expression in subserous gallbladder carcinoma. MATERIAL AND METHODS One hundred five samples (93 female) of subserous gallbladder carcinoma and 33 non(More)
BACKGROUND There is a high rate of Toxoplasma gondii infection worldwide. In Latin America the rate is as high as 65% in some populations. AIM To measure the prevalence of antibodies against Toxoplasma gondii in a native Yucpa community in Venezuela. SUBJECTS AND METHOD Total serum antibodies measured by indirect hemagglutination and IgM antibodies by(More)
Chronic sclerosing unspecific sialadenitis or Küttner tumor, is an infrequent inflammatory lesion of submandibular gland. We report a 60 years old male presenting with a slowly growing, painless, bilateral submandibular tumor of two years of evolution. Pathological examinations showed marked atrophy of glandular parenchyma with increased fibrous connective(More)
Aims-To investigate whether proteoglycan synthesis is altered in skin fibroblasts in patients with Alzheimer's disease compared with normal subjects.Methods-Cell lines obtained from donors with Alzheimer's disease and healthy controls were incubated with radioactive sulphate. The proteoglycans synthesised were determined and analysed by chromatographic,(More)
BACKGROUND Salivary gland tumors have heterogeneous pathological features. Oncogene Bcl-2 product expression inhibits apoptosis and therefore is important for tumor proliferation. AIM To assess the immunohistochemical gene Bcl-2 protein expression in salivary gland tumors. MATERIAL AND METHODS Twenty seven salivary gland tumors were selected from the(More)
We report the analysis of 4892 parasitological stool samples coming from outpatients and patients of a nutritional recuperation center of north Santiago. Cryptosporidium parvum was detected in 21 samples (0.4%). The protozoan was detected in 6 of 1203 samples from children of less than 2 years old, 3 of 1.727 samples from children between 6 and 15 years,(More)
UNLABELLED Prostate cancer is the most common tumour in men, and is most frequently established late in life. The objective of the article is to determine the protein expression of gene p53 in prostate cancer and to correlate the findings with clinical, morphological and epidemiological parameters. MATERIAL AND METHODS Immunohistochemical techniques with(More)
BACKGROUND The infiltration of venous blood vessels in gallbladder carcinoma and its importance as a prognostic factor has not been well studied. Victoria blue stain has been used to identify vascular involvement in gastric and thyroidal carcinomas. AIM To assess blood vessel infiltration using Victoria blue stain in gallbladder carcinomas. MATERIAL AND(More)
BACKGROUND Cerebral amyloid angiopathy is considered pathogenic in non traumatic cerebral lobar hemorrhages. AIM To study the frequency of cerebral amyloid angiopathy in brains of patients dying of non traumatic cerebral hemorrhages. MATERIAL AND METHODS Thirty seven brains from patients, 25 men and aged 65 +/- 10 years old, with cerebral hemorrhages(More)