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Resumen Se presentan 2 casos de enfermedad de Ménétrier (EM) remitidos a nuestra institución por síndrome edematoso. Esta enfermedad de poca prevalencia es una gastropatía hipertrófica perdedora de proteínas que en la mayoría de los casos es de causa desconocida, aunque se ha asociado con procesos infecciosos. Se caracteriza por edema, hipoproteinemia, hipoalbuminemia y, en la infancia, es de carácter benigno y autolimitado.
Abstract We present two cases of Menétrier's Disease (MS) referred to our institution due to edema. The prevalence of this disease is low. It is a hypertrophic gastropathy which causes loss of proteins and which has unknown causes in the majority of cases although it has been associated with infectious processes. It is characterized by edema, hypoproteinemia, hypoalbuminemia. In childhood it is benign and self-limited.
Assuntos
Humanos , Masculino , Lactente , Pré-Escolar , Doença , Hipoalbuminemia , Gastrite Hipertrófica , Hipoproteinemia , SíndromeRESUMO
Serpentine soils represent stressful habitats where plants have to cope with heavy metals, moisture limitation and low nutrient availability. We propose that facilitation is an important mechanism structuring plant communities under such stressful conditions. Facilitation has been shown to generate the spatial association of species, forming discrete vegetation patches of phylogenetically distant species. We measured these spatial and phylogenetic signatures left by facilitation in a serpentine plant community of central Cuba. Our results show that seedlings preferentially grow under plants of different species, and that adults are significantly aggregated into vegetation patches. In these patches, adults tend to co-occur with distant relatives, ultimately forming phylogenetically diverse neighbourhoods. We discuss possible mechanisms explaining how species adapted to serpentine areas may be acting as nurses, reducing the stressful conditions for the establishment of other species.
Assuntos
Plantas , Solo , Biodiversidade , Cuba , Filogenia , Poluentes do SoloRESUMO
RESUMEN Reportamos 1 caso de hepatitis C en una paciente adulta sin antecedentes de riesgos previos. Se describe una manifestación extrahepática, afectación de sistema nervioso central por mecanismos autoinmunes, lo cual determina la indicación de tratamiento, aún sin cumplir con los criterios de biopsia hepática y de carga viral.
ABSTRACT We report 1 case of hepatitis C in an adult patient with no history of previous risks. Describes an extrahepatic manifestation, involvement of the central nervous system autoimmune mechanisms, which determines the indication of treatment, even without meeting the criteria for liver biopsy and viral load.
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RESUMEN Se reportan cuatro pacientes con diagnóstico de lupus eritematoso sistémico (LES), con manifestaciones neurológicas, internados en el Hospital Nacional en el periodo 2010. Las manifestaciones fueron: psicosis lúpica, micro infartos cerebrales secundarios a la presencia de anticuerpos antifosfolipídicos y encéfalo mielitis Todos eran del sexo femenino. Dos de ellas debutaron la enfermedad con las manifestaciones neurológicas y dos en el curso de la evolución del LES. Tres pacientes respondieron al tratamiento con pulsos de metilprednisolona y de ciclofosfamida, con regresión de la sintomatología neurológica, sin embargo, una de las pacientes con manifestaciones neuropsiquiátricas no tuvo recuperación satisfactoria, persistiendo la sintomatología a pesar del tratamiento.
ABSTRACT We report four patients diagnosed with systemic lupus erythematosus (SLE) with neurological manifestations, placed in the National Hospital in the period 2010. Two patients had lupus psychosis, micro stroke secondary to antiphospholipid antibodies and encephalomyelitis. All were female. Two of them debuted the disease with neurological manifestations and two in the course of evolution of SLE. Three patients responded to treatment with methylprednisolone and cyclophosphamide pulses, with regression of neurologic symptoms. However, one of the patient was not satisfactory recovery and the symptoms persist despite treatment.
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A serine protease from Bothrops atrox (Peruvian specimen's venom) was isolated in two chromatographic steps in LC molecular exclusion and reverse phase-HPLC. This protein was denominated Ba III-4 (33,080.265 Da determinated by MALDI-TOF mass spectrometry) and showed pI of 5.06, Km 0.2 x 10(-1 ) M and the V (máx) 4.1 x 10(-1 )nmoles p-NA/lt/min on the synthetic substrate BapNA. Ba III-4 also showed ability to coagulate bovine fibrinogen. The serine protease was inhibited by soyben trypsin inhibitor and DA2II, which is an anti-hemorrhagic factor isolated from the opossum specie Didelphis albiventris. The primary structure of Ba III-4 showed the presence of His(44), Asp(94) and Ser(193) residues in the corresponding positions to the catalytic triad established in the serine proteases and Ser(193) are inhibited by phenylmethylsulfonylfluoride (PMSF). Amino acid analysis showed a high content of Asp, Glu, Gly, Ser, Ala and Pro, as well as 12 half-cysteine residues. Ba III-4 contained 293 amino acid residues and the primary structure of VIGGDECDIN EHPFLAFMYY SPRYFCGMTL INQEWVLTAA HCRYFCGMTL IHLGVHRESE KANYDEVRRF PKEKYFIFCD NNFTDDEVDK DIMLIRLDKP VSNSEHIAPL SLPSNPPSVG SVCRIMGWGQ TTTSPIDVLS PDEPHCANIN LFDNTVCHTA HPQVANTRTS TDTLCAGDLQ GGRDTCNGDS GGPLICNEQL HGILSWGGDP CAQPNKPAFY TKVYYFDHPW IKSIIAGNKK TVNFTCPPLR SDAKDDSTTY INQEWDWVLT AEHCDRTHMR NSFYDYSSIN SDS. Titration experiments did not show the presence of free sulfhydryl groups after 4 h incubation, nor were differences found in relation to titration kinetics in the presence of nondenaturating buffer. The isolation of this protein, Ba III-4, is of potential interest for the understanding of the pathomechanism of the snake venom action and for the identification of new blood coagulation enzymes of natural sources.