Increased Chondrocyte Apoptosis in Kashin-Beck Disease and Rats Induced by T-2 Toxin and Selenium Deficiency / 生物医学与环境科学(英文)
Biomedical and Environmental Sciences
;
(12): 351-362, 2017.
Artículo
en Inglés
| WPRIM
| ID: wpr-311405
ABSTRACT
<p><b>OBJECTIVE</b>To investigate chondrocyte apoptosis and the expression of biochemical markers associated with apoptosis in Kashin-Beck disease (KBD) and in an established T-2 toxin- and selenium (Se) deficiency-induced rat model.</p><p><b>METHODS</b>Cartilages were collected from the hand phalanges of five patients with KBD and five healthy children. Sprague-Dawley rats were administered a selenium-deficient diet for 4 weeks prior to T-2 toxin exposure. The apoptotic chondrocytes were observed by terminal deoxynucleotidyl transferase dUTP nick end labeling staining. Caspase-3, p53, Bcl-2, and Bax proteins in the cartilages were visualized by immunohistochemistry, their protein levels were determined by Western blotting, and mRNA levels were determined by real-time reverse transcription polymerase chain reaction.</p><p><b>RESULTS</b>Increased chondrocyte apoptosis was observed in the cartilages of children with KBD. Increased apoptotic and caspase-3-stained cells were observed in the cartilages of rats fed with normal and Se-deficient diets plus T-2 toxin exposure compared to those in rats fed with normal and Se-deficient diets. Caspase-3, p53, and Bax proteins and mRNA levels were higher, whereas Bcl-2 levels were lower in rats fed with normal or Se-deficiency diets supplemented with T-2 toxin than the corresponding levels in rats fed with normal diet.</p><p><b>CONCLUSION</b>T-2 toxin under a selenium-deficient nutritional status induces chondrocyte death, which emphasizes the role of chondrocyte apoptosis in cartilage damage and progression of KBD.</p>
Texto completo:
Disponible
Índice:
WPRIM (Pacífico Occidental)
Asunto principal:
Farmacología
/
Fisiología
/
Selenio
/
Toxina T-2
/
Biomarcadores
/
Cartílago Articular
/
Distribución Aleatoria
/
Ratas Sprague-Dawley
/
Apoptosis
/
Condrocitos
Tipo de estudio:
Ensayo Clínico Controlado
Límite:
Animales
/
Femenino
/
Humanos
/
Masculino
Idioma:
Inglés
Revista:
Biomedical and Environmental Sciences
Año:
2017
Tipo del documento:
Artículo
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