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Induction of Extracellular Lytic Enzymes by <i>Fusarium solani</i>

Advances in Microbiology 2013年第8期3卷 24-30页

作者： María de Guadalupe Moctezuma-Zárate Juan Manuel Vargas-morales Juan F. Cárdenas-González Víctor Manuel Martínez-Juárez Ismael Acosta-Rodríguez área Académica de Medicina Veterinaria y Zootecnia Instituto de Ciencias Agropecuarias Universidad Autónoma del Estado de Hidalgo Tulancingo de Bravo Hidalgo México Laboratorio de Micología Experimental Centro de Investigación y de Estudios de Posgrado Facultad de Ciencias Químicas Universidad Autónoma de San Luis Potosí San Luis Potosí México

Fusarium solani is a necrotrophic parasitic fungus that causes wilt in some plants, causing severe economic losses in some areas of the country. The objective of this work was to analyze the induction of extracellular lytic enzymes produced by a strain of F. solani, isolated from a culture of tomato, in Villa de Arista, S.L.P. México. Polygalacturonase activity has a greater induction time at 10 days, and the xylanase has two times higher activity at 8 and 13 days of incubation at 28?C. Also, the xylanase activities A and B were very stable at 4?C. After 7 days of incubation, it has an activity of 100% and 96%, respectively, while polygalacturonase retains 61% of its initial activity. Both activities are better induced with glutamate and urea as nitrogen sources respectively, and both exhibit an initial ph optimum of 5.5. Finally, we didn’t find cellulase activity in the analyzing conditions.

关键词： Fusarium solani Necrotrophic Fungus Lytic Enzymes

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Innovate combination of sevoflurane dilution in dimethyl sulfoxide: A stability study by gas chromatography and nuclear magnetic resonance

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World Journal of Pharmacology 2016年第3期5卷 59-67页

作者： F Dámaso Fernández-Ginés Sergio García-Mu?oz héctor Mateo-Carrasco Miguel ángel Rincón-Cervera Manuel Corti?as-Sáenz José Antonio morales-Molina Carmen Fernández-Sánchez Juan Miguel Expósito-López Ignacio Rodríguez-García Department of Pharmacy Torrecárdenas Hospital University of Almería Aseptic Services Unit Department of Pharmacy Northampton General Hospital Institute of Nutrition and Food Technology University of Chile Department of Anesthesiology and Pain Management Torrecárdenas Hospital Department of Pharmacy Agencia Pública Empresarial Sanitaria Hospital de Poniente Department of Chemistry and Physics University of Almería

To investigate physicochemical stability of sevofuranein dimethyl sulfoxide using gas chromatography with a fame ionization detector and nuclear magnetic reso-nance （NMR）.METhODSUndiluted sevoflurane, plus dilutions 1：2, 1：5, 1：10, 1：25, and 1：50 in dimethyl sulfoxide were prepared in a vertical laminar fow cabinet class Ⅱ type B and stored at different temperatures （23 ℃, 6 ℃, and -10 ℃） for 45 d. Sterile 1 mL polypropylene amber syringes to minimize light degradation, caps and needles were used. The presence of sevofurane and its degradation products in the samples was determined by gas chroma-tography with flame ionization detector （260 ℃, 40min）, and by 1h, 19F, and proton-decoupled 19F nuclearmagnetic *** The gas chromatography analysis showed sevofluraneand dimethyl sulfoxide （DMSO） retention times were 2.7and 13.0 min, respectively. Pure DMSO injection into thecolumn resulted in two additional peaks at 2.1 and 2.8min. The same sevofurane peak at 2.7 min was observedin all the dilutions at -10 ℃, 4 ℃ and 25 ℃. The NMRspectra showed signals consistent with the sevoflurane structure in all the dilutions at -10 ℃, 4 ℃ and 25 ℃. In the 1h spectrum, two signals corresponding to the sevoflurane molecule were observed at 5.12 and 4.16 parts per million （ppm5）. In the 19F-NMR spectrum, two signals were observed at -76.77 ppm and -157.13 ppm. In the 19F NMR CPD, two signals were observed at -76.77 ppm and -157.13 ppm. The first one showed a doublet （JF-F = 3.1 hz） which integrated by six fluorine nuclei from the hexafluoro-isopropyl group. The second signal was integrated by a fuorine atom and showed a septuplet （JF-F = 3.1 hz）.CONCLUSIONThis study shows that different concentrations ofsevofurane in dimethyl sulfoxide retain their chemicalcomposition after exposure to different temperaturesfor a period of 45 d.

关键词： Sevoflurane Dimethyl sulfoxide Uclear magnetic resonance Gas chromatography Skin ulcers Drug stability

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Role of IL-10 and TGF-β1 in local immunosuppression in hPV-associated cervical neoplasia

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World Journal of Clinical Oncology 2014年第4期5卷 753-763页

作者： Kirvis Torres-Poveda Margarita Bahena-Román Claudia Madrid-González Ana I Burguete-García Víctor hugo Bermúdez-morales Oscar Peralta-Zaragoza Vicente Madrid-Marina Chronic Infection and Cancer Division Research Center on Infectious Diseases Instituto Nacional de Salud Pública 62100 Cuernavaca Morelos Mexico

Cervical cancer is a worldwide disease that constitutes a significant public health problem, especially in developing countries, not only due to its high incidence but also because the most affected population comprises women who belong to marginalized socio-economic classes. Clinical and molecular research has identified immunological impairment in squamous intraepithelial cervical lesions and cervical cancer patients. human Papillomavirus(hPV) has several mechanisms for avoiding the immune system: it down-regulates the expression of interferon and upregulates interleukin(IL)-10and transforming growth factor(TGF)-β1 to produce a local immunosuppressive environment, which, along with altered tumor surface antigens, forms an immunosuppressive network that inhibits the antitumor immune response. In this review we analyzed the available data on several deregulated cellular immune functions in patients with NIC Ⅰ, NIC Ⅱ and NIC Ⅲ and cervical cancer. The effects of immunosuppressive cytokines on innate immune response, T-cell activation and cellular factors that promote tumor cell proliferation in cervical cancer patients are summarized. We discuss the functional consequences of hPV E2, E6, and E7 protein interactions with IL-10 and TGF-β1 promoters in the induction of these cytokines and postulate its effect on the cellular immune response in squamous intraepithelial cervical lesions and cervical cancer patients. This review provides a comprehensive picture of the immunological functions of IL-10 and TGF-β1 in response to hPV in humans.

关键词： Cervical cancer Immunosuppression Interleukin-10 Transforming growth factor-β1 human Papillomavirus

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Diabetes and cancer:Looking at the multiligand/RAGE axis

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World Journal of Diabetes 2011年第7期2卷 108-113页

作者： Armando Rojas Ileana González Erik morales Ramón Pérez-Castro Jacqueline Romero héctor Figueroa Biomedical Research Labs. Medicine FacultyCatholic University of Maule

The association between diabetes and hyperglycemia and the associated increased risk of several solid and hematologic malignancies has been the subject of investigation for many *** the association is not fully understood,current knowledge clearly indicates that diabetes may influence malignant cell transformation by several mechanisms,including hyperinsulinemia,hyperglycemia and chronic *** this context,the receptor for advanced glycation end-products (RAGE) has emerged as a focal point in its contribution to malignant transformation and tumor *** high-light how RAGE,once activated,as it manifests itself in conditions such as diabetes or hyperglycemia,is able to continuously bring about an inflammatory milieu,thus supporting the contribution of chronic inflammation to the development of malignancies.

关键词： Diabetes Cancer Inflammation Receptor for advanced glycation end-products Malignant transformation

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