Oral health related to quality of life in patients with stomatological diseases.

Aim: To describe the oral health-related quality of life (OHR-QoL) in patients with stomatological diseases.

Methods: All new patients seen in the Stomatology Clinic, from August 2008 to July 2009 were selected. OHR-QoL was measured using OHIP-14, in face-to-face interviews.

In Vitro Infection of Trypanosoma cruzi Causes Decrease in Glucose Transporter Protein-1 (GLUT1) Expression in Explants of Human Placental Villi Cultured under Normal and High Glucose Concentrations.

Trypanosoma cruzi, the etiologic Chagas' disease agent, induces changes in protein pattern of the human placenta syncytiotrophoblast. The glucose transporter protein-1 (GLUT1) is the primary isoform involved in transplacental glucose transport. We carried out in vitro assays to determine if T.

[Cellular components and placental alkaline phosphatase in Trypanosoma cruzi infection ].

Trypanosoma cruzi induces changes in the protein pattern of human placenta syncytiotrophoblast. Placental alkaline phosphatase (PLAP) is a glycoenzyme anchored to the membrane by a glycosyl-phosphatidylinositol molecule. PLAP activity and its presence was altered by the parasite in cultures of human placental villi and HEp2 cells with T.

Placental alkaline phosphatase (PLAP) enzyme activity and binding to IgG in Chagas' disease.

Placentas and plasma from women with and without Chagas' disease and cultures of human placental villi with Trypanosoma cruzi, neuraminidase, phospholipase A2 and phospholipase C were analyzed in order to verify if the alterations in placental alkaline phosphatase (PLAP) enzyme activity are caused by T. cruzi as observed in previous works. As IgG receptivity happens to be one of the proposed functions of PLAP, general IgG binding ability of the placentas treated with the mentioned enzymes, which are present on the parasite's surface, were also tested.

Placental alkaline phosphatase (PLAP) study in diabetic human placental villi infected with Trypanosoma cruzi.

Previous work has demonstrated that PLAP activity decreases in serum and placental villi from term chagasic and diabetic pregnant women. In vitro, T. cruzi induces changes in human syncytiotrophoblast's PLAP.

Meat cooking habits and risk of colorectal cancer in Córdoba, Argentina.

Objective: Colorectal cancer is the third cause of death among women and the fifth among men in Córdoba, Argentina. We previously reported colorectal cancer to be associated with a high intake of fatty meats and bovine viscera and inversely associated with dietary fiber intake. In this study, we investigated the role of method of cooking meat and preferences in browned surfaces in the risk of colorectal cancer.

Epidermal growth factor (EGF) in the human placental infection with Trypanosoma cruzi.

Maternal infection of Trypanosoma cruzi is associated with premature births, abortions and placentitis. A decrease in EGF levels has been suggested to occur in animals infected by T. cruzi, but there is no research about the levels of EGF in human patients with Chagas' disease.

Role of placental alkaline phosphatase in the internalization of trypomatigotes of Trypanosoma cruzi into HEp2 cells.

Background: In vitro, Trypanosoma cruzi invades a wide variety of mammalian cells by an unique process that is still poorly understood. Trypomastigotes adhere to specific receptors on the outer membrane of host cells before intracellular invasion, causing calcium ion mobilization and rearrangement of host cell microfilaments.

Objective: To test if placental alkaline phosphatase (PLAP), a trophoblast plasma membrane protein anchored by a glycosylphosphatidylinositol molecule, is involved in the transplacental transmission of this parasite.

Trypanosoma cruzi infection induces microfilament depletion in human placenta syncytiotrophoblast.

Congenital Chagas disease, endemic in Latin America, is associated with premature labour, miscarriage, and placentitis. Metacyclic trypomastigotes adhere to specific receptors on the outer membrane of host cells as a prelude to intracellular invasion, causing calcium ion mobilization, rearrangement of host cell microfilaments, recruitment of lysosomes and parasite internalization. The actin cytoskeleton plays an important role in many cellular processes including the parasite invasion into mammalian cells.

Role of placental alkaline phosphatase in the interaction between human placental trophoblast and Trypanosoma cruzi.

Congenital Chagas disease, due to the intracellular parasite Trypanosoma cruzi, is associated with premature labor, miscarriage, and placentitis. Human enzyme placental alkaline phosphatase (PLAP) (EC 3.1.

The effect of placental subfractions on Trypanosoma cruzi.

Five subfractions were collected from six term placentas by mincing and differential centrifugation: homogenate, nuclear, mitochondrial, lysosomal, and supernatant. The effect of each subfraction on Trypanosoma cruzi was assessed by trypan blue exclusion, relative infectivity of mice, and penetration of susceptible cultured VERO cells. Ultrastructural changes in trypomastigotes were identified after high cell mortality was shown by dye exclusion following treatment with lysosomal and supernatant fractions.

Trypanosoma cruzi: increased 5'-nucleotidase activity associated with dysfunction of adrenergic receptors in acutely infected albino Swiss mice.

Adenosine, derived from hydrolysis of 5'-AMP by 5'-nucleotidase activity, may be involved in coupling coronary blood flow to cardiac function and metabolism; it has been postulated as a cardioprotective substance in ischemic myocardium. The stimulation of beta-adrenergic receptors produces an increase in adenosine by 5'-AMP hydrolysis. In addition, it has been demonstrated that in Chagas' disease there is decreased cardiac perfusion.

Histochemical study of magellanic penguin (Spheniscus magellanicus) minor salivary glands during postnatal growth.

The histological and histochemical features of the minor salivary glands during postnatal development have been generally associated with the type of food ingested. However, recent studies support the fact that these salivary glands develop independently of the diet; in fact, minor salivary glands have similar morphological and histochemical characteristics in adult individuals of species with different diet regimens. Thus, the aim of this study was to characterize the developmental morphology of the penguin minor salivary glands and to contrast them with minor salivary glands of other species.

Structural and cytochemical modifications in the lingual glands of the newborn chicken irradiated with He-Ne laser.

Despite the increasing and successful use of laser in Medicine and Odontology, the possible iatrogenic and otherwise deleterious side effects of this radiation remain mostly unknown. In previous studies, it was shown that both the embryonic and the post-hatched chicken constitute reliable experimental models for this type of studies. Hence, the purpose of the present work was to analyze the structural and cytochemical alterations of the lingual glands of the newborn chicken irradiated with low energy He-Ne laser.

Alkaline phosphatase activity in plasma of pregnant chagasic patients.

The kinetic properties of plasma placental alkaline phosphatase patients with Chagas' disease were studied. When Cl2Mg was used as activator the same increase of activity (17-20%) was found in the chagasic and non chagasic groups. The enzyme was not inhibited by F-ion in any of the groups.

Structural and biochemical modifications in parotid gland induced by fasting.

Structural, ultrastructural and biochemical modifications produced by fasting in the parotid gland of guinea pig, were studied. The highest storage of secretory granules was found in the apical cytoplasm after a 12 hour fasting period. The curve of soluble proteins showed that the highest storage of proteins in the parenchyma took place after a 10/12 hour fasting period.

[Primary malignant esophageal melanoma: report of a case].

Primary malignant melanoma of the esophagus is rare. We identified one patient over a period of 15 years. This patient was a 80 years-old caucasian man.

In vivo and in vitro analysis of lysosomes and acid phosphatase activity in human chagasic placentas.

A structural, cytochemical, stereological, and biochemical study of lysosomes and a lysosome marker, the enzyme acid phosphatase, was performed, both in placentas at term from chagasic pregnant women without fetal infection and in normal placentas at term cocultured in vitro with Trypanosoma cruzi. It was found that in placentas from chagasic women lysosomes were normally distributed in the trophoblast. Stereological analysis showed that lysosomes and cytochemical acid phosphatase (AcP) activity were increased in the trophoblast of chagasic placentas.

[Morphological evaluation of intercellular junctions in the ovary of chick embryos: action of steroid and gonadotropic hormones in vitro].

Variations of the intercellular junctions of the germ and epithelial cells of the ovarian epithelium produced by gonadotropic and esteroid hormones were determined on ovaries of the chick embryo at 7 days of development. Explants of right and left ovaries were cultured without (control) or with hormones eddition (experimental) for 4 days. Cultures were processed for their ultrastructural study.

[Human chagasic placenta: structural and cytochemical changes of blood vessels].

Various authors have demonstrated that coronary blood vessels could have some participation in the pathogenesis of the cardiac alterations of Chagas' disease. The purpose of this work was to detect structural and cytochemical modifications of blood vessels in human chagasic placentas at term with optical and electron microscopy due their possible participation in the pathogenesis of the congenital transmission of the disease. In two of the six chagasic placentas at term from pregnant women with positive serology, there was diminution and occlusion of the lumen of the chorionic villi blood vessels, with hialine aspect of their walls.

[Increase of Hofbauer cells in human placentas cocultured in vitro with Trypanosoma cruzi].

To analyze the interaction between normal human placentas with Trypanosoma cruzi, optical and electron microscopy of chorionic villi stroma cocultured in vitro with 1.5 x 106 Tulahuen strain Trypomastigotes of the T. cruzi for 1 h, 3 hs and 12 hs in Eagle minimal essential medium were done.