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Effect of low-level laser irradiation on in vitro function of pancreatic islets.

Abstract：

INTRODUCTION:Although islet isolation and transplantation techniques have improved extensively in recent years, the loss of healthy functional islets is one of the major obstacles in this enterprise. A biostimulatory effect of low-level laser irradiation has been proven on proliferation of some kinds of cells. The aim of this study was to evaluate the effect of low-level laser irradiation on the function of isolated rat pancreatic islets after 24 hours of preculture. METHODS:Pancreatic islets isolated from male rats (250 to 300 g) were cultured for 24 hours in RPMI 1640 media. Groups of islets then received different energy densities (1, 3, 5 joules/cm(2) or silent) at 2 wavelengths (810 nm and 630 nm) using laser devices. Insulin concentrations in buffer media were measured as indices of islet function. RESULTS:Irradiation of incubated islets with 830 nm low-level laser significantly increased insulin secretion after a glucose challenge test (P < .05). There was a significant increase in insulin secretion after irradiation with joules/cm(2) 630 nm energy density (P < .001). CONCLUSION:These findings suggest that low-level laser irradiations improved islet cell function before transplantation.

journal_name

Transplant Proc

journal_title

Transplantation proceedings

authors

Irani S,Mohseni Salehi Monfared SS,Akbari-Kamrani M,Ostad SN,Abdollahi M,Larijani B

doi

10.1016/j.transproceed.2009.09.065

subject

Has Abstract

pub_date

2009-12-01 00:00:00

pages

4313-5

issue

10

eissn

0041-1345

issn

1873-2623

pii

S0041-1345(09)01380-3

journal_volume

41

pub_type

杂志文章

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