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1.
An. bras. dermatol ; 90(6): 862-867, Nov.-Dec. 2015. graf
Article in English | LILACS | ID: lil-769527

ABSTRACT

Abstract: It is known that inflammatory and immune responses protect us from the invasion of micro-organisms and eliminate "wastes" from the injured sites, but they may also be responsible for significant tissue damage. Adenosine, as a purine nucleoside, which is produced in inflamed or injured sites, fulfills its role in limiting tissue damage. Although, it may have a pleiotropic effect, which signals it with a proinflammatory state in certain situations, it can be considered a potent anti-inflammatory mediator. The effects of adenosine, which acts through its receptors on T cell, on mast cell and macrophages, on endothelial cells, on neutrophils and dendritic cells, as they indicate TNF-alpha and cytokines, show that this mediator has a central role in the pathogenesis of psoriasis. The way it acts in psoriasis will be reviewed in this study.


Subject(s)
Humans , Adenosine/metabolism , Psoriasis/etiology , Psoriasis/metabolism , Adenosine Deaminase/metabolism , Cytokines/metabolism , Immunosuppressive Agents/metabolism , Inflammation Mediators/metabolism , Methotrexate/metabolism
2.
Journal of Huazhong University of Science and Technology (Medical Sciences) ; (6): 159-62, 2008.
Article in English | WPRIM | ID: wpr-634594

ABSTRACT

This study is to investigate the effect of FK506 on expression of hepatocyte growth factor (HGF) in rats' spinal cord following peripheral nerve injury and to elucidate the mechanisms for neuroprotective property of FK506. Fifty male rats were randomly divided into normal group, injury group and treatment group. Models of peripheral nerve injury were established by bilateral transection of sciatic nerve 0.5 cm distal to piriform muscle. Then the treatment group received subcutaneous injection of FK506 (1 mg/kg) at the back of neck, while the injury group was given 0.9% saline. The L(4-6) spinal cords were harvested at various time points after the surgery. Western blotting and immunofluorescent staining were used to detect the level and position of HGF in spinal cord. Immunofluorescent staining showed that HGF-positive neurons were located in anterior horn, intermediate zone and posterior horn of gray matter in normal spinal cord. Western blotting revealed that there was no significant difference in the expressions of HGF between the injury group and the normal group, while the expression of HGF was significantly higher in the treatment group than in the injury group 7 and 14 days after surgery. It is suggested that peripheral nerve injury does not result in up-regulation of the expression of HGF in spinal cord, while FK506 may induce high expression of endogenous HGF after injury thereby protecting neurons and promoting axonal outgrowth.


Subject(s)
Cells, Cultured , Gene Expression Regulation , Hepatocyte Growth Factor/metabolism , Immunosuppressive Agents/metabolism , Immunosuppressive Agents/pharmacology , Microscopy, Fluorescence/methods , Neurons/metabolism , Peripheral Nervous System/metabolism , Sciatic Nerve/metabolism , Spinal Cord/cytology , Spinal Cord/metabolism , Spinal Cord Injuries/drug therapy , Tacrolimus/metabolism , Tacrolimus/pharmacology
3.
Article in English | IMSEAR | ID: sea-95099

ABSTRACT

With avaibility of newer immunosuppressive agents, incidence of acute graft rejection has decreased. Mycophenolate mofetil is one such new drug, now available in the Indian market It has been found to be useful in prevention and treatment of acute and chronic rejection after transplantation. Besides transplant it has been used successfully in primary and secondary glomerulopathies (e.g. SLE) and other autoimmune diseases. The drug is well tolerated with side effects limited mainly to gastrointestinal system in the form of epigastric pain, vomiting and diarrhoea.


Subject(s)
Aged , Area Under Curve , Biological Availability , Child , Clinical Trials as Topic , Drug Interactions , Graft Rejection/prevention & control , Half-Life , Humans , Immunosuppressive Agents/metabolism , Kidney Transplantation , Middle Aged , Mycophenolic Acid/analogs & derivatives , Tissue Distribution
4.
Experimental & Molecular Medicine ; : 13-22, 2004.
Article in English | WPRIM | ID: wpr-190979

ABSTRACT

Rheumatoid arthritis (RA) is a multifactorial autoimmune disease whose etiopathogenesis is not well understood. Although soluble (s) forms of 4-1BB (s4-1BB) and 4-1BB legand (s4-1BBL) have been detected in the sera of RA patients, their significance is not known. We compared the serum levels of s4-1BB and s4-1BBL in RA patients with those in systemic lupus erythematosus (SLE) and Behcet's disease (BD) patients. Serum levels of s4-1BB and s4-1BBL were significantly higher in RA patients compared with healthy controls, SLE or BD patients, and the abundance was correlated with disease severity in patients with RA. The serum levels of s4-1BB in RA patients were inversely corroborated with 4-1BB expression levels on activated T lymphocytes. In addition, there was a correlation between serum levels of s4-1BB and s4-1BBL. The augmented secretion of s4-1BB and s4-1BBL levels into the serum may reflect the clinical symptoms of RA and levels of s4-1BB and s4-1BBL in sera at the time of diagnosis may be indicative of the severity and outcome of RA.


Subject(s)
Adult , Aged , Female , Humans , Male , Middle Aged , Antigens, CD/metabolism , Arthritis, Rheumatoid/blood , Behcet Syndrome/blood , Comparative Study , Immunosuppressive Agents/metabolism , Leukocytes, Mononuclear/metabolism , Lupus Erythematosus, Systemic/blood , Random Allocation , Receptors, Nerve Growth Factor/blood , Receptors, Tumor Necrosis Factor/blood , Severity of Illness Index , Statistics , Tumor Necrosis Factor-alpha/metabolism
5.
Medicina (B.Aires) ; 60(4): 457-65, 2000. tab, graf
Article in Spanish | LILACS | ID: lil-273469

ABSTRACT

Realizamos un análisis retrospectivo en 97 pacientes trasplantados renales con seguimiento mínimo de un año para evaluar la actividad inmunosupresora de las estatinas. El Grupo A (38 pacientes) recibió estatinas y el Grupo B (59 pacientes) fue nuestro grupo control. El Grupo A fue luego subdividido en 4 subgrupos de acuerdo al tiempo en el cual se prescribieron estatinas. Los niveles de colesterol inicial y final en el Grupo A no fueron diferentes (218 ñ 7.8 mg/dl vs 222 ñ 7.5 mg/dl). Sin embargo, los niveles finales fueron más altos que los iniciales en el Grupo B (216 ñ 6 mg/dl vs 189 ñ 6.4 mg/dl; P = 0.0021). Los niveles de triglicéridos iniciales fueron más altos que los finales en el Grupo A (305 ñ 25.5 mg/dl vs 188 ñ 10.6 mg/dl; P < 0.0001). El Grupo A mostró una mejor sobrevida del injerto (P = 0.0350), una reducción en episodios de rechazo agudo (1 vs 38; P < 0.0001) y un nivel de creatinina más baja que en el Grupo B (1.96 ñ 0.21 mg/dl vs 2.77 ñ 0.27 mg/dl; P = 0.0374). En los subgrupos del Grupo A, la función renal fue superior en los pacientes que recibieron estatinas en forma temprana contra aquellos que las recibieron más tardíamente (1.33 ñ 0.1 mg/dl vs 3.26 ñ 0.7 mg/dl; P = 0.0064). Los resultados sugieren que en los receptores de trasplante renal las estatinas reducen en forma significativa el número de episodios de rechazo agudo, mejoran significativamente la sobrevida del injerto y la función renal. Estos efectos se correlacionan con una disminución en el nivel de triglicéridos pero son independientes de una acción hipocolesterolémica.


Subject(s)
Humans , Male , Female , Adult , Middle Aged , Hypolipidemic Agents/pharmacology , Immunosuppressive Agents/pharmacology , Kidney Transplantation , Proteins/pharmacology , Cholesterol/blood , Creatinine/blood , Creatinine/urine , Graft Rejection , Hypolipidemic Agents/metabolism , Immunosuppressive Agents/metabolism , Kidney/pathology , Proteins/metabolism , Retrospective Studies , Triglycerides/blood
6.
Cir. gen ; 18(3): 166-70, jul.-sept. 1996. tab, ilus
Article in Spanish | LILACS | ID: lil-200414

ABSTRACT

Objetivo. Determinar si existen diferencias en la aparición de alteraciones hepáticas secundarias al uso de doble contra triple esquema inmunosupresor en pacientes trasplantados de riñon. Diseño. Encuesta retrospectiva, observacional, transversal y descriptiva. Análisis estadístico: Chi cuadrada. Sede. Hospital de tercer nivel de atención médica. Pacientes y métodos. Se incluyeron 80 pacientes, los cuales se dividieron en dos grupos. Grupo I. a los que se les administró azatioprina y prednisona. Grupo II. a quienes se les dio triple esquema con azatioprina-prednisona-ciclosporina. Cada grupo se intregró con 40 pacientes. A cada enfermo se le hizo examen clínico, determinación de pruebas de función hepática y renal; estudios de gabinetes que incluyó: Ultrasonido y gammagrama. Se hizo biopsia hepática a los pacientes que presentaron manifestaciones clínicas de hepatopatía. Resultados. Veintiocho pacientes presentaron datos de disfunción hepática, en 6 secundaria a hepatitis tipo B, en 3 por hepatitis tipo C, 1 por hapatitis por citomegalovirus y en 18 secundaria al empleo de medicamentos inmunosupresores. De éstos, 13 se encontraron asintomáticos, presentaron exlcusivamente alteraciones bioquímicas, 5 tuvieron sintomatología. Las mujeres fueron afectadas con mayor frecuencia en ambos grupos, el grupo II resultó más afectado, (p<0.05); la frecuencia de hepato toxicidad fue mayor y se presentó en forma temprana, sin embargo, la severidad de la lesión fue similar en ambos grupos. Conclusión. La disfunción hepática por medicamentos es un problema frecuente en el paciente que es sometido a un trasplante, los enfermos que reciben triple esquema de inmunosupresión son más susceptibles a desarrollar efectos adversos en función hepática


Subject(s)
Humans , Male , Female , Azathioprine , Cyclosporine , Liver/physiology , Immunosuppressive Agents/metabolism , Kidney Transplantation , Prednisone , Transplantation Immunology/physiology
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