ABHRAK BHASMA AND SIO2 INFLUENCED MOBILITY OF LIPIDS IN LIVER AND KIDNEY OF CCL4 INDUCED ACUTELY INTOXICATED ALBINO RAT

In our earlier studies on CCl4 induced acute toxicity model (CCl4 3ml/kg body wt). Abhrak bhasma protects fatty degeneration of liver and associated nephrotoxicity in male albino rats. It had shown to function through production and management of free radicals (Teli and Kanase, 2020a, b). To study further the paths of Abhrak Bhasma mediated protection of acute hepatotoxicity and associated nephrotoxicity, liver, kidney and serum lipid contents were studied in present work. It shows no lipid accumulation in liver or kidney of normal rats by Abhrak Bhasma (10, 20, 30 and 40mg doses). But a same dose of silica in pure form (SiO2) is hepato and nephrotoxic in high doses in normal male albino rat. In acutely intoxicated rat also all the doses of Abhrak Bhasma influenced lipid contents of liver, kidney and serum show the protection of liver from fatty degeneration and also associated nephrotoxicity. Doses 30 and 40mg normalized the contents from liver, kidney and serum. The results are discussed to reveals the probable mode of action of Abhrak Bhasma.

Hepatorenal Effects of Diclofenac and Ciprofloxacin in Rats

The toxic effect of diclofenac (DCF) sodium and Ciprofloxacin (CIP) on gene expression of cytochrome P450 oxidase (CYPs) and the histology of liver and kidney of male albino rat has been evaluated in this study. DCF and CIP were chosen since they are inhibitors for specific CYP enzymes. Thirty-five adult male albino rats were divided into 7 groups of 5 animals each (A, B, C, D, E, F and G) and were treated orally with drugs for 21 consecutive days. Group A served as the control while B and C were treated with 5.3, 10.6 mg/kg body weight (bw) DCF sodium and groups D and E were treated with 40 and 80 mg/kg bw CIP, respectively. Groups F and G were treated with a mixture of the low and the high doses of both drugs, respectively. Both drugs significantly downregulated the mRNA expression of CYP1a2, CYP3a4 and CYP2c9. They caused hepatorenal histological changes. In the liver, massive fibrosis, necrosis, inflammatory cell infiltration with hemorrhages and hydrophilic degeneration have been observed. A massive tissue injury with glomerular and tubular damages due to sever necrosis, degeneration of concomitant inflammatory cells and blood vessels congestion have been shown in renal tissues. Although DCF and CIP are still used as therapeutic drugs, their use should be limited as their chronic administration induces a toxic effect on human health.

Structural and Functional Change in Albino Rat Retina Induced by Various Visible Light Wavelengths

The effects of visible light, from short to long wavelengths, on the retina were investigated functionally and histologically. The left eyes of Sprague–Dawley albino rats (6-weeks old, n = 6 for each wavelength) were exposed to seven narrow-band wavelengths (central wavelengths, 421, 441, 459, 501, 541, 581, and 615 nm) with bandwidths of 16 to 29 nm (half bandwidth, ±8–14.5 nm) using a xenon lamp source with bandpass filters at the retinal radiant exposures of 340 and 680 J/cm2. The right unexposed eyes served as controls. Seven days after exposure, flash electroretinograms (ERGs) were recorded, and the outer nuclear layer (ONL) thickness was measured. Compared to the unexposed eyes, significant reductions in the a- and b-wave ERG amplitudes were seen in eyes exposed to 460-nm or shorter wavelengths of light. The ONL thickness near the optic nerve head also tended to decrease with exposure to shorter wavelengths. The decreased ERG amplitudes and ONL thicknesses were most prominent in eyes exposed to 420-nm light at both radiant exposures. When the wavelengths were the same, the higher the amount of radiant exposure and the stronger the damage. Compared to the unexposed eyes, the a- and b-waves did not decrease significantly in eyes exposed to 500-nm or longer wavelength light. The results indicate that the retinal damage induced by visible light observed in albino rats depends on the wavelength and energy level of the exposed light.