Noise Exposure Levels in Black Tea Processing Factories and Its Effects on Employees

Effects of Noise Exposure on the Volume of Adrenal Gland and Serum Levels of Cortisol in Rat

Background: Noise pollution is considered as a stressful factor in every day’s life of the industrial world. The present study was designed to investigate the probable effects of different time exposure of noise stress on histomorphometric changes of adrenal gland, plasma cortisol and body weight of the rat. Methods: Sixty adult male Wistar rats were divided into two series of short time noise ...

PREVALENCE OF NOISE INDUCED HEARING LOSS IN EMPLOYEES IN SHIRAZ INDUSTRIAL FACTORIES

Study on lead levels in infusion time of imported green and black tea (Camellia sinensis L)

Background: Nowadays, tea is the most popular and frequently consumed beverages in the world after water. There are some beneficial trace elements in tea such as fluoride, caffeine and essential minerals, although there may be heavy metals in tea leaves which threat seriously human health. Therefore, the main objective of current study was to determine and monitor lead content in imported black...

Effect of Iranian Black Tea Extract and Its Isolated Thearubigins on Intestinal Transit Time in Mice

Introduction: In this study, the effects of black tea extract of Iranian tea plant (Camellia sinensis var sinensis) and its polyphenolic pigment thearubigins were investigated on mice intestinal transit time. Method: Thearubigins were isolated by liquid-liquid fraction method. The effects of black tea extract and isolated thearubigins on intestinal propulsion were measured by charcoal propulsio...

Investigating the Effects of Exposure to Continuous White Noise on SLC26A4 Gene Expression Levels in Male Rat Cochlea

Background and purpose: Irreversible damage to the inner ear is known as noise-induced hearing loss (NIHL). Exposure to excessive noise can affect the expression of genes in molecules involved in development of NIHL. SLC26A4 gene or PDS is responsible for causing both syndromic and non-syndromic deafness and is located at DFNB site. The aim of this study was to investigate the expression level ...