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Myenteric neurons and intestinal mucosa of diabetic rats after ascorbic acid supplementation

World Journal of Gastroenterology 2008年第42期14卷 6518-6524页

作者： Priscila de Freitas maria raquel maral natali Renata Virginia Fernandes Pereira marcilio Hubner Miranda Neto Jacqueline Nelisis Zanoni Department of Morphophysiological Sciences Enteric Neurons LaboratoryState University of Maringá Avenida Colombo 5790 Maringá87020-900 Paraná Brazil

AIM: To investigate the effect of ascorbic acid (AA) dietary supplementation on myenteric neurons and epithelial cell proliferation of the jejunum of adult rats with chronic diabetes mellitus. METHODS: Thirty rats at 90 d of age were divided into three groups: Non-diabetic, diabetic and diabetic treated with AA (DA) (1 g/L). After 120 d of treatment with AA the animals were killed. The myenteric neurons were stained for myosin-V and analyzed quantitatively in an area of 11.2 mm2/animal. We further measured the cellular area of 500 neurons per group. We also determined the metaphasic index (MI) of the jejunum mucosa layer of about 2500 cells in the intestinal crypts, as well as the dimensions of 30 villi and 30 crypts/animal. The data area was analyzed using the Olympus BX40 microscope. RESULTS: There was an increase of 14% in the neuronal density (792.6 ± 46.52 vs 680.6 ± 30.27) and 4.4% in the cellular area (303.4 ± 5.19 vs 291.1 ± 6.0) respectively of the diabetic group treated with AA when compared to control diabetic animals. There were no signifi cant differences in MI parameters, villi height or crypt depths among the ***: Supplementation with AA in the diabetic animal promoted moderate neuroprotection. There was no observation of alteration of the cellular proliferation of the jejunum mucosa layer of rats with chronic diabetes mellitus with or without supplementation with AA.

关键词： Ascorbic acid Diabetes mellitus Intestinalmucosa layer Myenteric neurons Myosin-V

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Responses of the Adult Rat Glucose Metabolism to Early Life Feeding, Caloric Restriction and Refeeding

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Journal of Pharmacy and Pharmacology 2018年第4期6卷 370-379页

作者： Nayra T. D. Branquinho Monica S. M. Loiola Leticia D. Crepaldi Lais A. Yamada Silvia C. S. F. Azevedo Camila Bataglini marcia N. Brito Vilma A. F. de Godoi maria Montserrat D. Pedrosa maria raquel M. natali Program of Graduate Studies in Cell and Molecular Biology State University of Maringa Maringa 87020-900 Brazil Program of Graduate Studies in Physiological Sciences State University of Maringa Maringa 87020-900 Brazil Department of Physiological Sciences State University of Maringa Maringa 87020-900 Brazil Department of Morphological Sciences State University of Maringa Maringa 87020-900 Brazil

Early life overfeeding in the rat can be experimentally induced by reducing litter size. This investigation assessed the consequences of this manipulation on glucose metabolism in vivo and in isolated hepatocytes in 150-day old rats. Additionally, after body growth, the effects of caloric restriction and refeeding were tested. Adult rats from control （G9） and reduced litters （G3L） did not differ in body and fat weights, glucose tolerance or insulin resistance （insulin-induced hypoglycemia）, or hepatocyte glucose release under basal or gluconeogenic conditions. Caloric restriction （G3R） reduced body and fat weights, decreased glucose decay after insulin injection and decreased hepatocyte gluconeogenic glucose release. Refeeding after caloric restriction reversed these parameters to those of the freely-fed groups （G9 and G3L）. Taken together, these results suggest that the liver glucose metabolism is not programmed by lactational overfeeding, but rather is responsive to the current nutritional condition of the animal.

关键词： Glucose homeostasis metabolic programming reduced litter caloric restriction refeeding.

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Big Data Analytics for Earth Sciences:the EarthServer approach

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International Journal of Digital Earth 2016年第1期9卷 3-29页

作者： Peter Baumann Paolo Mazzetti Joachim Ungar Roberto Barbera Damiano Barboni alan Beccati Lorenzo Bigagli Enrico Boldrini Riccardo Bruno Antonio Calanducci Piero Campalani Oliver Clements alex Dumitrua,Mike Grant Pasquale Herzig George Kakaletris John Laxton Panagiota Koltsida Kinga Lipskoch alireza Rezaei Mahdiraji Simone Mantovani Vlad Merticariu Antonio Messina Dimitar Misev Stefano natali Stefano Nativi Jelmer Oosthoek marco Pappalardo James Passmore Angelo Pio Rossi Francesco Rundo marcus Sen Vittorio Sorbera Don Sullivan mario Torrisi Leonardo Trovato maria Grazia Veratelli Sebastian Wagner Large-Scale Scientific Information Systems Jacobs UniversityBremenGermany Rasdaman GmbH BremenGermany CNR-IIA National Research Council of ItalyInstitute of Atmospheric Pollution ResearchFlorenceItaly EOX IT Services GmbH ViennaAustria Consorzio COMETA CataniaItaly Division of Catania Italian National Institute for Nuclear PhysicsCataniaItaly Department of Physics and Astronomy University of CataniaCataniaItaly MEEO S.r.l. FerraraItaly Plymouth marine Laboratory PlymouthUK Fraunhofer IGD DarmstadtGermany Athena Research and Innovation Center in Information Communication&Knowledge Technologies AthensGreece British Geological Survey EdinburghUK Software Engineering Italia S.r.l. CataniaItaly British Geological Survey KeyworthUK NASA Ames Research Center Moffett FieldCAUSA

Big Data Analytics is an emerging field since massive storage and computing capabilities have been made available by advanced *** and Environmental sciences are likely to benefit from Big Data Analytics techniques supporting the processing of the large number of Earth Observation datasets currently acquired and generated through observations and ***,Earth Science data and applications present specificities in terms of relevance of the geospatial information,wide heterogeneity of data models and formats,and complexity of ***,Big Earth Data Analytics requires specifically tailored techniques and *** EarthServer Big Earth Data Analytics engine offers a solution for coverage-type datasets,built around a high performance array database technology,and the adoption and enhancement of standards for service interaction(OGC WCS and WCPS).The EarthServer solution,led by the collection of requirements from scientific communities and international initiatives,provides a holistic approach that ranges from query languages and scalability up to mobile access and *** result is demonstrated and validated through the development of lighthouse applications in the marine,Geology,Atmospheric,Planetary and Cryospheric science domains.

关键词： big data Big Data Analytics array databases Earth Sciences interoperability standards

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Glutamine or Glutamine Dipeptide Supplementation Improves Gluconeogenesis and Liver Glycogenosis in Type 1 Diabetic Rats

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Journal of Pharmacy and Pharmacology 2019年第7期7卷 398-407页

作者： Silvia Carla S.F.Azevedo Carlos Vinicius D.da Rosa Ana Luiza M.Wunderlich Laís A.Yamada Isabela R.mariano Camila Bataglini Nayra T.D.Branquinho Scarlett R.Raposo Roberto B.Bazotte Edmara A.Baroni maria raquel M.natali maria Montserrat D.Pedrosa Vilma A.F.de Godoi Program of Graduate Studies in Cell and Molecular Biology State University of MaringáMaringá87020-900Brazil Program of Graduate Studies in Physiological Sciences State University of MaringáMaringá87020-900Brazil Undergraduation in Biological Sciences University Center of MaringáMaringá87050-390Brazil Department of Pharmacology and Therapeutics State University of MaringáMaringá87020-900Brazil Department of Physiological Sciences State University of MaringáMaringá87020-900Brazil Department of Morphological Sciences State University of MaringáMaringá87020-900Brazil

The effects of the supplementation with L-glutamine(GLN)or L-alanyl-L-glutamine(GDP)on the progression of the systemic and hepatic metabolic status of rats having untreated type 1 diabetes mellitus(T1DM)were *** Wistar diabetic rats(streptozotocin,60 mg/kg)were allotted to four groups supplemented by gavage for thirty days as follows:control and diabetic receiving saline;diabetic receiving GLN(248 mg/kg);and diabetic receiving GDP(400 mg/kg).Body weight,plasmatic parameters and kidney function were *** hepatocytes were used to assess gluconeogenic *** and kidney were used for morphological analyses.T1DM decreased the number and increased the area of the hepatocytes,possibly because of the observed enlargement of glycogen *** weight,glomerular area and proteinuria increased,and glomerular filtration rate decreased,in non-supplemented T1DM *** area and proteinuria were reversed by both *** T1DM hepatocytes released less glucose,which could have been diverted to glycogen synthesis and secondary glycogenosis observed in T1DM;this was partially reversed by the *** results point to a possible beneficial effect of glutamine on the metabolic and hepatic impairments of T1DM.

关键词： Type 1 diabetes mellitus L-glutamine glutamine dipeptide gluconeogenesis glycogenosis

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