ABSTRACT
El gen AIP (proteína moduladora de la actividad del receptor de aril hidrocarburos) se localiza en la región 11q13.2 y codifica para una proteína de 330 aminoácidos que interactúa con el factor de transcripción AhR (receptor para aril hidrocarburos). Las mutaciones en este gen se han asociado con adenomas pituitarios aislados de tipo familiar (APAF). Se caracterizan por una presentación temprana (alrededor de 20 años), por lo regular producen hormona de crecimiento y/o prolactina, tienen un comportamiento clínico agresivo y poca respuesta a análogos de somatostatina.
The AIP gene (aryl hydrocarbon receptor interacting protein) is located on chromosome 11q13.2 and encodes a 330 amino acid protein which interacts with the aryl hydrocarbon receptor (AHR) transcription factor. Mutations in the AIP gene have been associated with familial isolated pituitary adenomas (FIPA). They characterize by an early-onset (around the age of 20 years old) and for being aggressive, growth hormone and/or prolactin-secreting tumors, with poor response to somatostatin analogues.
Subject(s)
Pituitary Neoplasms/genetics , Intercellular Signaling Peptides and Proteins , Intercellular Signaling Peptides and Proteins/metabolism , Pituitary Diseases/genetics , Pituitary Diseases/metabolism , Pituitary Neoplasms/metabolism , Adenoma/genetics , Adenoma/metabolismABSTRACT
Ovarian cancer is the fifth leading cause of cancer-related deaths. It causes approximately 125,000 deaths per year worldwide; its diagnosis is made in advanced stages resulting in a high mortality rate. The objective of the study was optimizing the isolation of cells obtained from the solid tumor and ascitic fluid of patients with ovarian cancer and the phenotype with markers related to the epithelial-mesenchymal transition. For this, the solid tumor tissue was disaggregated and cultivated with different methodologies. As a result, cell growth was obtained and epi-immunofluorescence was performed using antibodies against E-cadherin, EpCAM, N-cadherin, vimentin, CD133, and CD44. The primary culture from the solid tumor was obtained using Dispase II and DMEM/F12. Finally, heterogeneity was detected in terms of the expression of mesenchymal and epithelial type markers in the two types of isolated cells. Additionally, CD133 and CD44 expression was detected, proteins associated with the tumor stem cells phenotype.
Subject(s)
Biomarkers, Tumor/analysis , Ovarian Neoplasms/diagnosis , Vimentin/metabolism , Cadherins/metabolism , Cell Line, Tumor , Cell Proliferation/physiology , Epithelial-Mesenchymal Transition/genetics , Female , Humans , Neoplastic Stem Cells/pathology , Ovarian Neoplasms/pathologyABSTRACT
In this study, the lignocellulosic residue coffee pulp was used as carbon source in fermentative l(+)-lactic acid production using Bacillus coagulans. After thermo-chemical treatment at 121°C for 30min in presence of 0.18molL(-1) H2SO4 and following an enzymatic digestion using Accellerase 1500 carbon-rich hydrolysates were obtained. Two different coffee pulp materials with comparable biomass composition were used, but sugar concentrations in hydrolysates showed variations. The primary sugars were (gL(-1)) glucose (20-30), xylose (15-25), sucrose (5-11) and arabinose (0.7-10). Fermentations were carried out at laboratory (2L) and pilot (50L) scales in presence of 10gL(-1) yeast extract. At pilot scale carbon utilization and lactic acid yield per gram of sugar consumed were 94.65% and 0.78gg(-1), respectively. The productivity was 4.02gL(-1)h(-1). Downstream processing resulted in a pure formulation containing 937gL(-1)l(+)-lactic acid with an optical purity of 99.7%.
Subject(s)
Bacillus coagulans/metabolism , Coffee/chemistry , Fermentation , Lactic Acid/biosynthesis , Arabinose/chemistry , Biomass , Glucose/chemistry , Hydrolysis , Refuse Disposal , Solid Waste , Water/chemistry , XyloseABSTRACT
In this study, mucilage, a residue from coffee production, was investigated as substrate in fermentative l(+)-lactic acid production. Mucilage was provided as liquid suspension consisting glucose, galactose, fructose, xylose and sucrose as free sugars (up to 60gL(-1)), and used directly as medium in Bacillus coagulans batch fermentations carried out at 2 and 50L scales. Using mucilage and 5gL(-1) yeast extract as additional nitrogen source, more than 40gL(-1) lactic acid was obtained. Productivity and yield were 4-5gL(-1)h(-1) and 0.70-0.77g lactic acid per g of free sugars, respectively, irrespective the scale. Similar yield was found when no yeast extract was supplied, the productivity, however, was 1.5gL(-1)h(-1). Down-stream processing of culture broth, including filtration, electrodialysis, ion exchange chromatography and distillation, resulted in a pure lactic acid formulation containing 930gL(-1)l(+)-lactic acid. Optical purity was 99.8%.
Subject(s)
Bacillus coagulans/metabolism , Coffee , Lactic Acid/biosynthesis , Carbohydrate Metabolism , Fermentation , NitrogenABSTRACT
Todos los pacientes presentaron por lo menos una manifestación dermatológica. Los cambios de coloración fueron los más frecuentes. No ha sido reportada la hiperpigmentación de salientes óseas que observamos en el 38 por ciento de los casos. En el 76 por ciento se encontró xerosis, infecciones en el 66 por ciento, dermopatía diabética en 32 por ciento, prurito en 50 por ciento, queilitis en 17.52 por ciento, uñas mitad y mitad en 28 por ciento y sólo un caso de foliculitis urémica
Subject(s)
Adult , Middle Aged , Humans , Female , Male , Cheilitis/diagnosis , Cheilitis/physiopathology , Renal Insufficiency, Chronic/physiopathology , Skin Diseases/diagnosis , Skin Diseases/etiology , Skin Manifestations , Skin Pigmentation , Xanthomatosis/physiopathologyABSTRACT
Se comunica la frecuencias de farmacodermias en el Instituto Dermatológico Guanajuatense de Irapuato, Gto. La incidencia fue de 2.2 por ciento en relación con otras dermatosis. Los medicamentos responsables con más frecuencia fueron el piroxicam, corticoesteroides y dimetilpirazolona. Se encontraron 11 formas clínicas diferentes; las más comunes: fotosensibilización, dermatosis acneiformes, urticaria y eritema pigmentado fijo
Subject(s)
Humans , Male , Female , Infant , Child, Preschool , Adolescent , Adult , Middle Aged , Erythema/chemically induced , Phenytoin/adverse effects , Piroxicam/adverse effects , Skin Diseases/chemically induced , Sulfasalazine/adverse effects , Urticaria/chemically induced , Erythema/epidemiology , Urticaria/epidemiologyABSTRACT
Se reporta el caso de una mujer de 49 años con lesiones purpúricas diseminadas de aparición súbita y pruebas de coagulación normales. El cuadro se instaló después de intervención quirúrgica porcarcinoma cervico-uterino; hubo resolución con presencia de secuelas
Subject(s)
Humans , Female , Middle Aged , Facial Dermatoses/diagnosis , Facial Dermatoses/physiopathology , Leg Dermatoses/physiopathology , Purpura/physiopathology , Uterine Cervical Neoplasms/surgery , Leg Dermatoses/diagnosis , Protein C/deficiency , Purpura/drug therapyABSTRACT
La lepra tuberculoide reaccional (reacción de reversa es una entidad clínica poco frecuente en la práctica leprológica. Se presentan tres casos desencadenados por el tratamiento y se comentan las características de los pacientes