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Registros recuperados: 10
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5-Bromo-2’-deoxyuridine induces visible morphological alteration in the DNA puffs of the anterior salivary gland region of Bradysia hygida (Diptera, Sciaridae) BJMBR
de Almeida,J.C.; Sauaia,H.; Viana,J.C..
5-Bromo-2’-deoxyuridine (BrdUrd) has long been known to interfere with cell differentiation. We found that treatment ofBradysia hygida larvae with BrdUrd during DNA puff anlage formation in the polytene chromosomes of the salivary gland S1 region noticeably affects anlage morphology. However, it does not affect subsequent metamorphosis to the adult stage. The chromatin of the chromosomal sites that would normally form DNA puffs remains very compact and DNA puff expansion does not occur with administration of 4 to 8 mM BrdUrd. Injection of BrdUrd at different ages provoked a gradient of compaction of the DNA puff chromatin, leading to the formation of very small to almost normal puffs. By immunodetection, we show that the analogue is preferentially...
Tipo: Info:eu-repo/semantics/article Palavras-chave: DNA puffs; BrdUrd; Gene amplification; Polytene chromosomes; Salivary glands; Sciaridae.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2010001200002
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Biochemical and morphological aspects of salivary glands of the predator Brontocoris tabidus (Heteroptera: Pentatomidae) BABT
Azevedo,Dihego de Oliveira; Zanuncio,José Cola; Zanuncio Jr.,José Salazar; Martins,Gustavo Ferreira; Marques-Silva,Solange; Sossai,Marcos Franklin; Serrão,José Eduardo.
The aim of this work was to study the feeding habits of the predator Brontocoris tabidus (Heteroptera: Pentatomidae) analyzing the salivary gland complex (SGC). The SGC was dissected and subjected to histological analyses and biochemical assays. Results showed that a pair of bilobed principal salivary glands and one pair of tubular accessory salivary glands form the SGC and different parts of salivary gland synthesizes similar substances. Lipases, a-amylase and trypsin-like enzymes were detected at both lobes of the principal salivary gland. These data together with observations related to the predator's diet suggested that it could be considered an obligate zoophytophagous.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Salivary glands; Biological control; Heteroptera; Pentatomidae.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300013
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Cell damage induced by polybrominated diphenyl ethers on Chironomus sancticaroli (Diptera: Chironomidae) Rev. Bras. entomol.
Signorini-Souza,Isadora de Lourdes; Palacio-Cortés,Angela Maria; Beltrão-Graboski,Tiago; Richardi,Vinicius Sobrinho; Fávaro,Luis Fernando; Navarro-Silva,Mário Antônio.
Abstract Histological effects of polybrominated diphenyl ethers (PBDEs) were observed in Chironomus sancticaroli larvae which underwent acute exposure. 2,2′,4-triBDE (BDE-17), 2,2′,4,4′-tetraBDE (BDE-47) and 2,2′,4,4′,5-pentaBDE (BDE-99) were evaluated at 0.5, 2.0 and 20 μg L-1. Cytoplasm vacuolisation of oenocytes was observed in the larvae exposed to BDE-17 and BDE-47. Cuénot cells were disrupted at the brush border as an effect of the three evaluated congeners highlighting BDE-47 at 2.0 μg L-1; 60% of larvae displayed this disruption. The midgut showed changes in the morphology of apex cells located next to the lumen of region I exposed to BDE-17 and BDE-47, while BDE-99 induced a narrowing of the lumen diameter. Significant cytoplasm vacuolisation of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cuénot cells; Flame retardants; Midge; Oenocytes; Salivary glands.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262020000100204
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Histological Study of the Salivary Glands in Zaedyus pichiy (Mammalia, Xenarthra, Dasypodidae) International Journal of Morphology
Estecondo,Silvia; Codón,Stella Maris; Casanave,Emma Beatriz.
The histology of the salivary glands of the armadillo Zaedyus pichiy (Desmarest, 1804) was studied. Three pairs of major compound tubuloacinar salivary glands, parotid, submandibular and sublingual, were distinguished. The parotid gland is histologically a serous gland. The submandibular gland consists of two lobes. The anterior lobe is composed of mixed and serous acini. The posterior lobe is predominantly mucous. There is a reservoir or salivary bladder, related with the anterior lobe. The sublingual gland is mixed, composed of mucous acini with scattered serous demilunes
Tipo: Journal article Palavras-chave: Mammals; Xenarthra; Armadillos; Dasypodidae; Zaedyus pichiy; Histology; Salivary glands.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022005000100004
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Localization of Vesicular Inhibitory Amino Acid Transporter (VIAAT) in the Submandibular Salivary Gland Throughout the Postnatal Development of Mice International Journal of Morphology
Toomsan,Yanyong; Chomphoo,Surang; Pakkarato,Sawetree; Watanabe,Masahiko; Kondo,Hisatake; Hipkaeo,Wiphawi.
According to recent studies, it is highly possible that the occurrence of vesicular inhibitory amino acid transporter (VIAAT) is a good marker of GABA-signaling not only in the brain, but also in extra-brain tissue cells containing GABA and GAD. In view of this, the present study was attempted to localize VIAAT-immunoreactivity in the submandibular gland of mice. In the present study, the submandibular glands of male mice at various postnatal developmental stages were examined for detailed localization of VIAAT-immunoreactivity in immunohistochemistry at light microscopic level. The immunoreactivity for VIAAT was localized in epithelial cells of proximal and distal excretory ducts with the striated portion more intensely immunopositive at young postnatal...
Tipo: Journal article Palavras-chave: VIATT-immunoreactivity; GABA; Salivary glands; Arteriolar smooth muscle.
Ano: 2015 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022015000100019
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Minor Salivary Glands Morphology in Xerostomia Patients International Journal of Morphology
Liquidato,Bianca Maria; Barros,Mirna Duarte; Filho,Ivo Bussoloti; Pereira,Celina Siqueira Barbosa; Macéa,Maria Inêz Marcondes.
The minor salivary glands are found scattered throughout the oral mucosa, especially in the lips and soft palate mucosa. Several factors can cause xerostomia, whereas the salivary glands histological characteristics are also considered as factors for defining the etiology. Thus, the minor salivary glands biopsy represents an essential tool for attending the required diagnosis criterion in the classification of Sjögren's Syndrome patients, since it does not present risk for the patient. The objective of this study is to determine the histological description of the minor salivary glands obtained from the biopsies of xerostomia patients and to classify the minor salivary gland histological aspect as the Sjögren's Syndrome. Forty laminas of xerostomia...
Tipo: Journal article Palavras-chave: Sjögren's syndrome; Xerostomia; Salivary glands; Saliva; Diagnosis.
Ano: 2006 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022006000400031
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Morphological alterations in salivary glands of mice (Mus musculus) submitted to tannin enriched diets: comparison with sialotrophic effects of sympathetic agonists stimulation Arq. Bras. Med. Vet. Zootec.
Lamy,E.; Baptista,E.S.; Coelho,A.V.; Silva,F. Capela e.
In order to study the effects of tannins at histomorphological level, mice were either fed with three structurally different types of tannins (tannic acid, chestnut, and quebracho) or treated with isoproterenol, during 10 days. Acini of parotid and submandibular glands increased significantly, being the increase higher for parotid compared to submandibular glands, and higher in the quebracho compared with the other tannin groups. Sublingual acinar size also increased after tannin consumption, by opposition to isoproterenol-treated animals. The results present evidences that the effects produced by tannins are dependent on their structure.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Mice; Condensed tannin; Hydrolysable tannin; Isoproterenol; Salivary glands; Histology.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352010000400012
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Morphological Study of the Cervical Salivary Glands in the Nine-Banded Armadillo International Journal of Morphology
Schimming,Bruno Cesar.
The cervical salivary glands of the armadillo Dasypus novemcinctus was examined by light microscopy. These glands are situated on either side of the neck, divide in lobes and show a presence of a salivary bladder, associated with the main ducts of the gland. This gland is histologically a typical mixed glands, containing both mucous and serous elements, with mucous acini as the predominant secretory unit. The bladder itself is composed of a wall made up of pseudostratified epithelium, skeletal muscle and connective tissue. In general, the morphology of the cervical salivary glands appears similar to that described in other species of the mammals.
Tipo: Journal article Palavras-chave: Armadillo; Salivary glands; Cervical salivary glands; Morphology.
Ano: 2009 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022009000300017
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Parotid gland adenocarcinoma in a cow: case report Arq. Bras. Med. Vet. Zootec.
Queiroz,P.J.B.; Queiroz,T.D.; Magalhães,P.L.; Borges,N.C.; Martins,D.B.; Moura,V.M.B.D.; Silva,L.A.F..
ABSTRACT A 9-year-old Girolando dairy cow, weighing 400kg, with a history of increased volume in the right parotid region, which extended to the submandibular region, was assisted. Fine needle aspiration cytology was performed, and the cytological findings were consistent with malignant neoplasm of epithelial origin (carcinoma). Because of the unfavorable prognosis, the animal was euthanized and submitted to an anatomopathological examination. Samples of the increased parotid and affected lymph nodes were collected for histopathological evaluation. The microscopic changes were accentuated features of anaplasia, moderate cell proliferation, atypical mitotic figures, and necrosis. Stroma ranged from delicate to scirrhous, and the tumor boundaries were not...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Cattle; Cytology; Immunohistochemistry; Malignant neoplasms; Salivary glands.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352018000300758
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Zoophytophagy in predatory Hemiptera BABT
Torres,Jorge Braz; Boyd,David W..
Predaceous hemipteran feeding on different trophic levels have raised questions about their ecology and role in biological control. Therefore, specific adaptations allowing them to simultaneously use plants and animals as sources for their nutritional requirements are important. Enzymatic variability in predatory hemipterans has been suggested as the basic adaptation for convergent or divergent to omnivory. Thus, the salivary enzymatic complexes of predatory hemipterans have been furnished a partial understanding of the mechanisms permitting switching between plant and animal food sources. In this study, a discriminatory analysis was performed to attribute trophic habits to each insect investigated based on the presence and absence of salivary enzyme...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Feeding behavior; Salivary glands; Phytophagy; Zoophagy; Biological control.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132009000500018
Registros recuperados: 10
Primeira ... 1 ... Última
 

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