Inhibition of carrageenan-induced expression of tissue and plasma prekallikreins mRNA by low level laser therapy in a rat paw edema model

Brazilian Journal of Physical Therapy

Moisés P. Silva¹  Flávia Bortone¹  Marcelo P. Silva¹  Thiago R. Araújo¹  Maricília S. Costa²  José A. Silva Júnior¹ 

[1] ,Universidade Nove de JulhoSão Paulo SP ,Brazil

关键词: Plasma kallikrein;    tissue kallikrein;    low-level laser therapy;    gene expression;    inflammation;    calicreína plasmática;    calicreína tecidual;    laserterapia de baixa potência;    expressão gênica;    inflamação;   

DOI  :  10.1590/S1413-35552011005000005

来源: SciELO

【 摘 要 】

BACKGROND: Low level laser therapy (LLLT) has been used clinically in order to treat inflammation, where tissue and plasma prekallikrein have crucial importance. Plasma prekallikrein (PPK) is synthesized by the hepatocytes and secreted into the bloodstream, where it participates in the surface-dependent activation of blood coagulation, fibrinolysis, kinin generation and inflammation. Tissue prekallikrein is associated with important disease states (including cancer, inflammation, and neurodegeneration) and has been utilized or proposed as clinically important biomarker or therapeutic target of interest. OBJECTIVE: To evaluate if LLLT modulates tissue and plasma prekallikreins mRNA expression in the carrageenan-induced rat paw edema. METHODS: Experimental groups were assigned as followed: A1 (Control-saline), A2 (Carrageenan-only), A3 (laser 660nm only) and A4 (Carrageenan + laser 660nm). Edema was measured by a plethysmometer. Subplantar tissue was collected for the quantification of prekallikreins mRNA by Real time-Polymerase Chain Reaction. RESULTS: A significantly decrease in the edema was observed after laser irradiation. Expression of prekallikreins increased after carrageenan injection. Tissue and plasma prekallikrein mRNA expression significantly decreased after LLLT's 660nm wavelength. CONCLUSION: These results suggest that expression of tissue and plasma prekallikreins is modulated by LLLT, which can be used in clinical practice due to its anti-inflammatory effects.

【 授权许可】

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