ABSTRACT
Background: Anti liver kidney microsome antibodies (LKM-1) have been recently incorporated to the study and classification of chronic autoimmune hepatitis (HC-A1). The presence of anti LKM-1 antibodies and essential cryoglobulinemia is frequent in virus C associated chronic hepatitis (HC-VC). Aim: To study the frequency of anti LKM-1 antibodies and cryoglobulin levels in patients with HC-AI, HC-VC and cryptogenic cirrhosis. Patients and methods: Forty two patients were studied. Nineteen adult women with classic HC-AI with positive antinuclear or anti smooth muscle antibodies. Five patients of less than 20 years old with HC-AI and negative antinuclear and anti smooth muscle antibodies. Ten adult women with cryptogenic cirrhosis, 4 women and 4 men with HC-VC. Serum samples were obtained at 37C. Antinuclear, anti smooth muscle and anti LKM-1 antibodies were measured by indirect immunofluorescence using Hep-2 cells and rat tissue slices as substrates. Cryoglobulins were determined by the traditional method and cryocrit. Results: All studied patients were anti LKM-1 negative. All had significant circulating cryoglobulin levels. Conclusions: In this sample of patients with HC-AI or HC-VC, anti LKM-1 antibodies were not detected but all had cryoglobulinemia
Subject(s)
Humans , Male , Female , Adolescent , Adult , Middle Aged , Hepatitis, Autoimmune/immunology , Cryoglobulinemia/diagnosis , Hepatitis C, Chronic/immunology , Biomarkers/analysisABSTRACT
Se infectaron cuatro cepas de ratones, machos y hembras, con 2000 trypomastigotes sanguíneos de la cepa Tulahuen de trypanosoma cruzi. Los animales de las cepas A.Sw y HTI se comportaron como resistentes y los de las cepas A/Sn y HTG como susceptibles, independiente del sexo de los animales infectados. En los casos de las cepas A.Sw, HTG y HTI se observó niveles significativamente más altos de parasitemia en los machos. A nivel histopatológico el daño tisular no presenta inicialmente diferencias significativas entre cepas resistentes y susceptibles, sin embargo, con el tiempo se puede ver que en los animales resistentes se inducen fenómenos de reparación del daño, en cambio en los ratones susceptibles las lesiones parecen aumentar a pesar de no observarse parásitos intracelulares o circunlantes
Subject(s)
Animals , Mice , Chagas Disease/physiopathology , Trypanosoma cruzi/isolation & purification , Disease Susceptibility/epidemiology , Histocytochemistry/methods , Immunity, Innate , Mice/parasitology , Parasitemia/epidemiologyABSTRACT
The aim of this work was to assess cellular immunity using the Multitest CMI and relate its results with lymphocyte counts and lymphocyte subpopulations determined using monoclonal antibodies against CD4 and CD8 and fluorescence microscopy. We studied 51 patients (31 males), 20 infected with HIV, 18 with recurring infections, 5 with cancer, 2 with tuberculosis and 6 with miscellaneous diagnoses. According to Multitest results, patients were classified as normal, hypoergic or anergic. Twenty five percent of patients were normal, 65 percent hypoergic and 10 percent anergic. Eighty percent of anergic patients were infected with HIV. No differences in total lymphocyte count were observed between the 3 groups. CD4 lymphocyte count was lower in anergic patients when compared with the other groups. All patients with CD4 counts below 200 cells/mmü were anergic. It is cincluded that Multitest CMI is useful for the assessment of cellular immunity and complements the determination of lymphocyte subpopulations
Subject(s)
Humans , Male , Female , Adult , Lymphocyte Subsets , Lymphocyte Count , Immunity, Cellular/physiology , CD4-Positive T-Lymphocytes , HIV Infections/immunology , Immunologic Techniques/statistics & numerical dataABSTRACT
We report five patients with vasculitis and antineutrophil cytoplasmic antibodies with cytoplasmic pattern. All had severe upper and lower respiratory tract necrotizing lesions. Three had kidney failure due to rapidly progressive glomerulonephritis. The pathological study showed a crescentic glomerulonephritis, a chronic granulomatous inflammation in the lungs and in the nasal mucosa, an acute nonspecific inflammation or a chronic granulomatous inflammation and focal blood vessel fibrinoid necrosis. All patients with simultaneous involvement of lungs and kidneys had high titers of antineutrophil cytoplasmic antibodies. The nomenclature and classification of these diseases is discussed
Subject(s)
Humans , Male , Female , Adult , Middle Aged , Vasculitis/immunology , Respiratory Tract Diseases/etiology , Vasculitis/complications , Vasculitis/pathology , Immunoglobulin A/isolation & purification , Immunoglobulin G/isolation & purification , Immunoglobulin M/isolation & purification , Granulomatosis with Polyangiitis/immunology , Cytoplasm/immunology , Glomerulonephritis/etiology , Antibodies/isolation & purification , Neutrophils/immunologyABSTRACT
Los glucocorticoides tópicos se usan en diversas enfermedades inflamatorias dermatológicas, respiratorias, etc. Al igual que los glucocorticoides sistémicos pueden suprimir el eje hipotálamo-hipófisis-suprarrenal y producir efectos locales adversos. Por su uso en afecciones crónicas interesa conocer si los glucocorticoides tópicos tienen influencia sobre el número de linfocitos periféricos, lo que repercutiría en el sistema inmune. Se estudió el efecto de dos formas de corticoide de acción porlongada, dipropionato de betametasona, sobre los linfocitos circulantes y algunos órgano como la glándula suprarrenal y piel, en 46 ratas Wistar, aplicándose corticoide tópico en el 25 por ciento de la superficie corporal 2 veces al día a un grupo y sistémico por vía intramuscular por una sola vez en distintas dosis a otros 3 grupos. Después de realizar recuento de linfocitos los días 0,3 y 21, se observaron diferencias estadísticamente significativas en el número de linfocitos al día 3, alteración que revirtió en el análisis del recuento del día 21. En relación al uso de glucocorticoides sistémicos se observaron variaciones características de linfopenia y neutrofilia, que fueron más intensas a mayor dosis empleada. En análisis histopatológico se ralizó en el grupo de ratas con glucocorticoide tópico y sistémico a dosis baja y en las controles. Hubo cambios histopatológicos sólo a nivel de la corteza suprarrenal de las ratas tratadas con glucocorticoide sistémico a dosis baja y a nivel de piel para las ratas sometidasa tratamiento tópico