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Search Results: 1 - 10 of 608544 matches for " Cristina; Pérez-García "
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Standard criteria versus Rosemont classification for EUS-diagnosis of chronic pancreatitis Criterios estándar versus clasificación de Rosemont para el diagnóstico ecoendoscópico de pancreatitis crónica
Cristina Jimeno-Ayllón,José Ignacio Pérez-García,Carmen Julia Gómez-Ruiz,Jesús García-Cano-Lizcano
Revista Espa?ola de Enfermedades Digestivas , 2011,
Abstract: Aim: to study the possible differences in the final diagnosis of chronic pancreatitis by using standard classification described by Wiersema et al. and the new classification proposed recently by Rosemont. Material and methods: forty-seven patients with the diagnosis of chronic pancreatitis were included in this study. The parenchymal and ductal criteria were studied, the patients were divided in two groups for Wiersema criteria: < 4 criteria, non-diagnostic for chronic pancreatitis and ≥ 4 criteria, diagnosis of chronic pancreatitis. The same patients were divided in four groups according to Rosemont classification: normal pancreas, indeterminate, suggestive and consistent with chronic pancreatitis. We analyzed these data with Chi-square test reported with 95% confidence intervals (CI). Results: in patients with chronic pancreatitis the most frequent criteria observed were lobularity in 66% of cases and pancreatic duct dilatation and calcifications in 57.4% of cases each. We found a significant statistical association between the results of both classifications (p < 0.05). The highest association is found in patients with more than 4 standard criteria and definitive diagnostic of chronic pancreatitis according to Rosemont classification. In patients who have less than 4 standard criteria the diagnosis is suggestive of chronic pancreatitis by using the Rosemont classification in 27.66% (p < 0.05). Conclusion: these results show that no significant statistical differences are found for patients with > 4 criteria diagnosis by standard criteria. But 27.66% patients with less than 4 standard criteria would be suggestive according to Rosemont classification (p < 0.05). Hence, the new classification would be useful in patients with high suspicion of chronic pancreatitis with < 4 standard criteria but with more significance such as parenchymal lithiasis, lobularity or ductal calcifications. Objetivo: analizar las posibles diferencias en el diagnóstico final de pancreatitis crónica empleando los criterios estándar descritos por Wiersema y cols. y la nueva clasificación propuesta recientemente en Rosemont. Material y métodos: se incluyen 47 pacientes con diagnóstico de pancreatitis crónica. Se estudian los criterios parenquimatosos y ductales, dividiendo a los pacientes en 2 grupos según los criterios de Wiersema: < 4 criterios, no diagnóstico de pancreatitis crónica, ≥ 4 criterios, diagnóstico de pancreatitis crónica. Se estudiaron nuevamente dichos pacientes aplicando la clasificación de Rosemont: páncreas normal, indeterminado, sugestivo y diagnóstico de pancr
Rese a de "Diversidad florística de Oaxaca: de musgos a angiospermas (colecciones y lista de especies)" de GARCíA MENDOZA A.J. Y MEAVE J.A. EDS.
Eduardo A. Pérez-García
Boletín de la Sociedad Botánica de México , 2011,
Blanca Pérez-García
Boletín de la Sociedad Botánica de México , 2010,
Which stressors are responsible for the worsening in the clinical symptomatology of lupus?  [PDF]
M. I. Peralta-Ramírez, J. Jiménez-Alonso, M. Pérez-García
Health (Health) , 2009, DOI: 10.4236/health.2009.14051
Abstract: Objective: The purpose of this study was to test which stressors worsen the symptoms perceived by patients with lupus, thus broadening and corroborating results obtained in a previous study published in Psychosomatic Medicine. Methods: In order to examine this question, we selected 43 patients with lupus whose symp-toms worsened due to the effects of daily stress. These patients were divided into two groups: patients whose increase in clinical lupus symp-tomatology was predicted by an increase in daily stressors on the same day (G1) and pa-tients whose increase in clinical lupus symp-tomatology was predicted by an increase in daily stressors the day before and the same day (G2). Later, three factorial analyses were con-ducted with the items related to stressors and the items related to lupic symptoms. Results: The results showed that in G1 there were three factors that made up a total of 35.08% of the explained variance. The stressors associated with certain symptoms of the illness in this group are feeling ill or being worried about their physical appearance, with the main stressor being the illness itself. However, in G2, two factors were found that made up a total of 40.37% of the explained variance for lag=0 and 38.67% for lag=1. The stressors associated with the majority of the lupus symptoms are of an interpersonal and work-related nature. This as-sociation was maintained when we carried out the factorial analyses with the items of the symptoms from the following day. Conclusions: The interpersonal and work-related stressors are related to a worsening in the majority of the lupic symptoms in the patients whose sympto-matology worsens as a result of daily stress experienced the day before.
Do we need biomarkers to predict the benefit of adding adjuvant taxanes for treatment of breast cancer?
José Pérez-García, Javier Cortés
Breast Cancer Research , 2012, DOI: 10.1186/bcr3093
Abstract: Gene expression profiling studies have classified breast tumors into a number of distinct intrinsic subtypes, and this has important implications for prognosis and therapy of the disease. The discovery of biomarkers that will predict responses to specific therapies is critical for advances in personalized medicine. Currently, however, there are few biomarkers employed in the clinic as predictive factors for treatment response in cases of breast cancer. In practice, only estrogen receptor (ER) and HER2 status are used. A third biomarker, the Ki67 labeling index, is a well-recognized cell proliferation marker that has been correlated with poor prognosis and higher chemosensitivity in breast cancer. However, assessment of the Ki67 index is still a matter of debate because of the lack of consensus in defining an optimal cutoff level.In the previous issue of Breast Cancer Research, Jacquemier and colleagues [1] retrospectively assessed the prognostic and predictive value of subtyping breast cancer by immunohistochemistry and other multiple biomarkers in the PACS 01 trial. In this study, 1,999 patients with node-positive breast cancer were randomly assigned to receive six cycles of fluorouracil, epirubicin, and cyclophosphamide (FEC) or a sequential regimen of three cycles of FEC followed by three cycles of docetaxel [2]. The addition of docetaxel significantly improved the 5-year rates of disease-free survival (DFS) (73.2% versus 78.4%; P = 0.012) and overall survival (86.7% versus 90.7%; P = 0.017).In the article, the expression of 34 selected proteins, which included immunohistochemical determination of the Ki67 index and status of ER, progesterone receptor (PR), and HER2 as well as the evaluation of 30 additional proteins by tissue microarrays, was centrally analyzed in 1,099 tumor samples retrospectively. The authors concluded that high Ki67 index levels, defined as at least 20% of tumor cells displaying positive nuclear staining, were associated with shorter DFS but
Morphogenesis of the gametophytes of eight Mexican species of Blechnum (Blechnaceae)
Mendoza-Ruiz, Aniceto;Pérez-García, Blanca;
Acta botánica mexicana , 2009,
Abstract: a comparative study of the gametophytes of eight mexican species of the genus blechnum (blechnaceae) is described. fertile plants for spore collection were obtained at different mexican localities. the spores were sown in agar enriched with thompson media and cultured at 22-25 °c, with a light regime of 12 hours. spores of all species are monolete, ellipsoidal to spheroidal, and non-chlorophyllous. vittaria-type germination occurred after 6-14 days followed by a 2-6-cell-long filament and aspidium-type prothallial development. adult gametophytes are cordiform-spatulate to cordiform-reniform and have wide wings with numerous unicellular marginal and superficial hairs. sporophytes developed only in b. occidentale and b. polypodioides.
Fase sexual de los helechos Odontosoria schlechtendalii y Odontosoria scandens (Dennstaedtiaceae)
Granados,Beatriz; Pérez-García,Blanca; Mendoza,Aniceto;
Revista de Biología Tropical , 2003,
Abstract: the results of morphogenesis studies of the sexual phase of odontosoria schlechtendalii and o. scandens are presented in this paper. in o. schlechtendalii and o. scandens the spores are triletes, non-chlorophyllous, and germinación is of the vittaria-type, devoid of perine, the exine is smoth and sometimes coarsely ridged to reticulate. the development pattern is of the adiantum-type. the adult gametophyte is cordate-spathulate, with probable presence of anteridiogen in o. schlechtendalii, both species are glabrous. sex organs are of the common type of the leptosporangiate ferns. the first leaves appeared after 56-92 days of culture, with petiole and plate divide narrow, trichomes bifurcate and stomate anomocytic
Morfología vegetal neotropical
Pérez-García,Blanca; Mendoza,Aniceto;
Revista de Biología Tropical , 2002,
Abstract: an analysis on plant morphology and the sources that are important to the morphologic interpretations is done. an additional analysis is presented on all published papers in this subject by the revista de biología tropical since its foundation, as well as its contribution to the plant morphology development in the neotropics.
Análisis comparativo de la fase sexual de dos especies de Microgramma (Polypodiaceae, Pleopeltoideae)
Aniceto Mendoza-Ruiz,Blanca Pérez-García
Acta botánica mexicana , 2005,
Abstract: Se describe la morfología de los gametofitos de Microgramma lycopodioides y Microgramma piloselloides. Ambas especies presentan esporas monoletes, germinación de tipo Vittaria y desarrollo protálico de tipo Drynaria. Sus gametofitos son cordiformeespatulados a cordiforme-reniformes, con desarrollo de escasos pelos unicelulares y pluricelulares en la etapa adulta. Las primeras hojas del esporofito son simples y espatuladas con estomas polocíticos. Se compara y discute el desarrollo protálico de ambas plantas con el de Microgramma nitida y de algunas especies del género Pleopeltis, observando que todas ellas comparten el mismo tipo de germinación tipo Vittaria y el desarrollo protálico tipo Drynaria.
Aniceto Mendoza-Ruiz,Blanca Pérez-García
Acta botánica mexicana , 2009,
Abstract: Se describe el estudio comparativo de la fase sexual de ocho especies del género Blechnum para México. Las plantas fértiles para la obtención de las esporas fueron recolectadas en distintas localidades del país. éstas se sembraron en agar enriquecido con medio nutritivo de Thompson y se pusieron a germinar temperatura de 22-25 °C y con un régimen lumínico de 12 h luz. Las esporas de todas las especies son monoletes, elipsoidales a esferoidales, no clorofílicas; presentan germinación tipo-Vittaria, filamento de 2-6 células de longitud, desarrollo protálico tipo-Aspidium. Los gametofitos adultos son cordiforme-espatulados a cordiforme-reniformes, presentan amplias alas con numerosos pelos unicelulares marginales y superficiales; los gametangios son del tipo de los helechos leptosporangiados. Los esporofitos sólo se formaron en B. occidentale y B. polypodioides.
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