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1.
Acta cir. bras ; 31(6): 382-388, graf
Article in English | LILACS | ID: lil-785018

ABSTRACT

ABSTRACT PURPOSE: To investigate the regulatory roles of neutrophil elastase (NE) and matrix metalloproteinase-9 (MMP-9) in lipopolysaccharide (LPS)-induced acute lung injury (ALI) in mice. METHODS: To construct LPS-induced ALI mouse models, wild-type C57BL/6 mice were administered 5.0 mg/kg of LPS through endotracheal, and/or 1.0 mg/kg of ONO-5046, and/or 20.0 mg/kg of chemically modified tetracycline-3 (CMT-3) by gavage. The levels of MMP-9, tissue inhibitor of metalloprotease-1, interleukin (IL)-6 were detected by real time RT-PCR at 6 h, 24 h and 48 h, and tumor necrosis factor (TNF), lung wet-dry weight ratio, white blood cell (WBC) count and polymorphonuclear (PMN) count in bronchoalveolar lavage fluid (BALF) were tested at 48 h after administration. The 5-day survival analysis of the ALI mice was also performed. RESULTS: Both ONO-5046 and CMT-3, regardless of being used individually or combined, significantly reduced the levels of MMP-9, IL-6, and TNF in lung tissue as well as in BALF, and the WBC and PMN count in BALF. Combined treatment with ONO-5046 and CMT-3 remarkably improved the survival rate of ALI mice. CONCLUSION: Neutrophil elastase synergizes with matrix metalloproteinase-9 to promote and regulate the release of inflammatory mediators and the infiltration of inflammatory cells, consequently affecting the survival of lipopolysaccharide-induced acute lung injury mice.


Subject(s)
Animals , Sulfonamides/administration & dosage , Tetracyclines/administration & dosage , Leukocyte Elastase/metabolism , Matrix Metalloproteinase 9/metabolism , Acute Lung Injury/enzymology , Glycine/analogs & derivatives , Time Factors , Bronchoalveolar Lavage Fluid/cytology , Survival Analysis , Lipopolysaccharides , Interleukin-6/metabolism , Inflammation Mediators/metabolism , Leukocyte Elastase/drug effects , Tissue Inhibitor of Metalloproteinase-1/metabolism , Matrix Metalloproteinase 9/analysis , Matrix Metalloproteinase 9/drug effects , Tumor Necrosis Factors/metabolism , Disease Models, Animal , Acute Lung Injury/chemically induced , Acute Lung Injury/blood , Glycine/administration & dosage , Leukocyte Count , Mice, Inbred C57BL , Neutrophils
2.
Acta odontol. venez ; 52(2)2014. ilus
Article in Spanish | LILACS | ID: lil-777789

ABSTRACT

En la presente investigación pretendemos optimizar los resultados, evitando la coloración coronal, en procedimientos odontológicos donde sea imprescindible el uso de tetraciclinas así como evaluar la disminución de las coloraciones coronales, al aplicar un antioxidante (Acido Ascórbico) en dientes tratados con tetraciclinas (Minociclina y Doxiciclina). Estudio experimental de investigación básica, de tipo ensayo clínico. En los dientes tratados con minociclina y doxiciclina observamos cambios en la coloración dentaria apreciables tanto en corona como en la raíz, mientras que en los grupos dentarios donde se añadió el antioxidante (ácido ascórbico) a la tetraciclina no se obtuvo esa tinción. La adición de ácido ascórbico a minociclina y doxiciclina provoca que la tinción dentaria no se produzca o que se vea significativamente reducid a.


In this research we want to optimize the results, avoiding the coronal coloring, in dental procedures in where the use of tetracyclines is essential as well as evaluating the reduction of coronal discoloration, by applying an antioxidant (ascorbic acid) in the teeth treated with tetracyclines (minocycline and doxycycline). Experimental study of basic research, clinical trial type. Results: In the teeth treated with minocycline and doxycycline we observed changes in the coloration of the teeth both in crown and in the root, while in the tooth groups in which the antioxidant was added to tetracycline we observed that no staining was obtained. The addition of Ascorbic acid to minoclynine and doxyclycline causes that dental stain will not occur or be significant reduced.


Subject(s)
Humans , Male , Female , Ascorbic Acid/administration & dosage , Ascorbic Acid/therapeutic use , Dental Pulp Necrosis/diagnosis , Tetracyclines/administration & dosage , Tetracyclines/therapeutic use , Dental Pulp Diseases , Endodontics , Periapical Diseases
4.
Dermatol. venez ; 34(1): 19-22, 1996. ilus
Article in Spanish | LILACS | ID: lil-185646

ABSTRACT

El osteoma cutis miliar múltiple (OCMM) está caracterizado por múltiples nódulos firmes y pequeños formados por crecimientos óseos nuevos que aparecen en la piel. Los autores describen una paciente de 60 años con lesiones de aparición progresiva de tres años de evolución, asintomáticas, localizadas en ambas mejillas, con antecedentes de acné en la adolescencia, los exámenes paraclínicos (entre ellos calcio, fósforo y paratohormona) no evidenciaron alteraciones. Los OCMM no están relacionados con hipercalcemia o calcinosis y existe mucha controversia sobre su origen así como la influencia de lesiones o inflamación previa como factores etiológicos. Se analizan las hipótesis así como la clasificación y exámenes complementarios de dinámica ósea y tratamiento


Subject(s)
Humans , Female , Dermatology , Osteoma/diagnosis , Osteoma/therapy , Tetracyclines/administration & dosage , Tetracyclines/therapeutic use
5.
Dermatol. venez ; 28(1): 9-11, 1990. tab
Article in Spanish | LILACS | ID: lil-98947

ABSTRACT

Se hizo un estudio prospectivo randomizado en 75 pacientes divididos en tres grupos. Uno tratado con tetraciclina, un segundo grupo con Ibuprofen, y otro grupo con la combinación Ibuprofen más Tetraciclina. Todos por ocho semanas de tratamiento. El esquema Ibuprofen más Tetraciclina fue efectivo y bién tolerado


Subject(s)
Adolescent , Adult , Humans , Male , Acne Vulgaris/etiology , Ibuprofen/administration & dosage , Tetracyclines/administration & dosage
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