Modulação androgênica e estrogênica na próstata: uma abordagem em modelos experimentais de roedores com enfoque na biologia estrutural

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Antiestrogen therapies affect tissue homeostasis of the gerbil (Meriones unguiculatus) female prostate and ovaries

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Cytochemical characterization of Triatoma infestans and Panstrongylus megistus salivary gland cells (Hemiptera, Reduviidae, Triatominae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Microscopic comparative study of the exposure effects of testosterone cypionate and ethinylestradiol during prenatal life on the prostatic tissue of adult gerbils

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Biochemical biomarkers and metals in Perna perna mussels from mariculture zones of Santa Catarina, Brazil

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

Morphology of Richards' Gland in the Wasp Metapolybia docilis

Richards gland in the epiponine wasp Metapolybia docilis occurs at the anterior side of the 5(th) abdominal sternite, and is formed by approx. 360 secretory cells. The cells discharge their secretory products through accompanying duct cells into a reservoir that is formed by the invaginated intersegmental membrane between the 4(th) and 5(th) sternites. The ultrastructural characteristics of the secretory cells are indicative for the production of a non-proteinaceous secretion, which is in line with the trail substance that is used by these wasps during their swarm-founding.

Effect of estrogen therapy, soy isoflavones, and the combination therapy on the submandibular gland of ovariectomized rats

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Mucus extravasation and retention phenomena: a 24-year study

Background: Mucoceles are benign lesions related to the minor salivary glands and their respective ducts frequently affecting oral structures which are generally asymptomatic. Mucoceles are generally characterized by swollen nodular lesions preferentially located on the lower lip and differ from the so-called ranulas, which are lesions located on the floor of the mouth and related to the sublingual or submandibular glands.Methods: The objective of the present study was to analyze data such as age, gender, race and site of the lesion of 173 mucocele cases diagnosed at the Discipline of Stomatology, Sao Jose dos Campos Dental School, UNESP, over a period of 24 years (April 1980 to February 2003).Results: of the 173 cases analyzed, 104 (60.12%) were females and 69 (39.88%) were males. Age ranged from 4 to 70 years (mean +/- SD: 17 +/- 9.53) and most patients were in the second decade of life (n = 86, 49.42%); white (n = 124, 71.68%). The lower lip was the site most frequently affected by the lesions (n = 135, 78.03%), whereas the lowest prevalence was observed for the soft palate, buccal mucosa, and lingual frenum.Conclusion: In this study, mucoceles predominated in white female subjects in the second decade of life, with the lower lip being the most frequently affected site.

Effect of the juvenile hormone on the development of the mandibular gland in workers' pupae of Apis mellifera L. (Hymenoptera, Apidae)

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

Ocorrência e morfologia de glândulas tegumentares no abdome de Melissoptila richardiae (Bertoni & Scrottky) (Hymenoptera, Apidae, Eucerini)

Foram estudadas a ocorrência e a morfologia de glândulas tegumentares presentes no abdome de fêmeas de Melissoptila richardiae. Os resultados mostram que nesta espécie, células glandulares da classe III são encontradas de duas formas: isoladas nos tergitos e esternitos III e IV e formando um aglomerado de unidades glandulares bilateralmente, entre os segmentos III e IV, os quais liberam seu produto de secreção em um reservatório originado a partir da membrana intersegmental. Os resultados sugerem que o produto secretado é lipídico e, provavelmente volátil.

Análise histológica das glândulas uretrais da capivara (Hydrochoerus hydrochaeris)

Para realização do estudo microscópico das glândulas anexas à uretra masculina, foram utilizadas duas capivaras (Hydrochoerus hydrocaeris), adultas, das quais foram coletados fragmentos das glândulas genitais acessórias, imersos em solução fixadora de Bouin e lavados cuidadosamente em álcool de 70% ao absoluto. A seguir foram submetidos aos processos histológicos de rotina e corados pelos métodos de Hematoxilina/Eosina e Tricrômico de Masson. Os resultados morfológicos encontrados foram: o ducto deferente possui um espessamento da parede, onde a luz permanece inalterada e sem presença de epitélio granular. A glândula vesicular possui um epitélio secretor do tipo pseudoestratificado colunar. A glândula prostática possui mucosa com pregueamentos altos e ramificados, revestido por epitélio pseudoestratificado cilíndrico. Machos de capivaras possuem glândulas vesiculares e próstata como glândulas uretrais. No material examinado não foi identificado epitélio secretor correspondente a glândula bulbouretral e morfologicamente assemelha-se aos outros histricomorfos.

Estrutura e desenvolvimento dos tricomas secretores em folhas de Piper regnellii (Miq.) C. DC. var. regnellii (Piperaceae)

Nesta espécie ocorrem dois tipos de tricomas secretores: glândula perolada e tricoma saculiforme. Ambos originam-se na protoderme do primórdio foliar e atingem sua maturidade nas folhas jovens presentes no ápice caulinar. A densidade dos dois tipos de tricomas diminui durante a expansão do limbo, sendo raros na folha adulta. As glândulas peroladas são constituídas por uma célula basal e por uma célula apical grande cuja forma varia de semi-globóide a espatulada. A liberação da secreção ocorre após a ruptura da cutícula distendida. Os tricomas saculiformes são constituídos por uma célula basal, 1-2 células colares e uma célula apical cônica, de posição inclinada à superfície foliar. A secreção acumula-se em espaços subcuticulares diminutos, não tendo sido observada ruptura da cutícula.

Post-embrionic development of the digestive tube of Dermatobia hominis (Linnaeus) (Diptera, Cuterebridae)

The digestive tube of 2nd and 3rd instar larvae, pupae and newly emerged adults of Dermatobia hominis (Linnaeus, 1781) was studied anatomically. The specimens were dissected in buffer saline under a stereomicroscope, and the digestive tubes were placed on slides and fixed in 10% buffered formalin. Each tube was measured using a micrometric eye piece, and drawings were made with camera lucida. The results showed that the midgut, the hindgut and the Malpighian tubules with their ducts grow gradually during the larval development. The oesophagus and the salivary glands with their ducts grow only during the moult from the 2nd to the 3rd instar. In the pupal period, salivary glands grow gradually but disappeared after the 20th day. After metamorphosis the digestive tube regressed. This is expected since adult D. hominis lives about nine days without feeding. This fly, similar to other calyptratae muscoid flies shows no vestige of a crop during all post-embrionic development, and the adult has no salivary glands.

Ocorrência e morfologia de glândulas nas pernas de Centris e Epicharis (Hymenoptera, Anthophoridae)

The presence of glands in insect legs is largely difunded. In bees they are present in solitary and social species. In Centris and Epicharis three different types of glandular structures were found: bag-shaped structures in males femur and tibia, unicelular glandular cells in ali segments of all leg pairs in males and females, but more developed in females, and differentiated epidermis in the basitarsus of both sexes. The tarsal gland present in the distal tarsomere of all legs of males and females are a special type of the bag-shaped structure. The nature of secretion and it use is unknow, but some morphological and stainning properties indicate a lipidic nature.

The frontal weapon of the termite Armitermes euamignathus Silvestri (Isoptera, Termitidae, Nasutitermitinae)

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)