background: low back pain (lbp) is one of the most common problems among the workers of different industries. the role of occupational factors in causing the lbp has been indicated previously. lbp has great socio-economic costs and most of its costs are related to the chronic lbp. the aim of this study was to identify the occupational risk factors that are related to the progression of the lbp ...

In this report of a 5-yr longitudinal study of workers at six cotton textile mills, exposure and across-shift FEV, changes were evaluated as possible predictors of the annual change in FEV, for yarn manufacturing workers. A total of 611 workers had three repeatable spirometric tests, over at least 3yr, and at least one (average of three) across-shift test, while always working the same shift. T...

BACKGROUND This study aimed to quantify structural and functional changes at the macula during acute exposure to high altitude and to assess their structure/function relationship. This work is related to the Tuebingen High Altitude Ophthalmology (THAO) study. METHODOLOGY/PRINCIPAL FINDINGS Spectral domain optical coherence tomography and microperimetry were used to quantify changes of central...

Acute (96 h) and prolonged (30 days) copper exposure induced osmoregulatory disturbance and impaired nitrogenous waste excretion in the marine teleost, the gulf toadfish (Opsanus beta), which was found to be extremely tolerant to acute copper exposure with a 96 h LC50 exceeding 340 microM but exhibited disturbed mineral balance in response to both acute and prolonged exposure to approximately 1...

Abstract Purpose of Review Individuals with a history traumatic brain injury (TBI) are at much greater risk for developing cardiovascular disease (CVD) compared to the general population. This review discusses dietary patterns as means addressing modifiable factors following TBI exposure. Evidence-based resources practicing Physiatrists and Brain Injury Medicine specialists pertaining nutrition...

Chronic endogenous testosterone exposure adversely affects proinflammatory and proapoptotic signaling after ischemia/reperfusion; however, it remains unknown whether a single acute testosterone exposure is equally detrimental. We hypothesized that acute exogenous testosterone infusion before ischemia would worsen myocardial functional recovery, increase the activation of MAPKs and caspase-3, an...

OBJECTIVES To study acute exposure to imidazoline derivatives in 72 children younger than 15 years of age, followed-up from January 1994 to December 1999. METHODS This is a retrospective study of 72 patients with age between 2 months and 13 years (median 2 years; 25-75% = 1 to 3 years old) exposed to naphazoline (N = 48), fenoxazoline (N = 18), oxymetazoline (N = 5) and tetrahydrozoline (N = ...

Accidental exposure to uranium is a matter of concern, as U(VI) is nephrotoxic in both human and animal models, and its toxicity is associated to chemical toxicity instead of radioactivity. We synthesized different PAMAM G4 and G5 derivatives in order to prove their interaction with uranium and their effect on the viability of red blood cells in vitro. Furthermore, we prove the effectiveness of...

The observed effects after ozone exposure strongly depend on ozone concentration and exposure time. We hypothesized that depending on the O3 exposure protocol, mainly either an oxidant damage or an inflammation will determine the O3 toxicity. We compared two different ozone exposure protocols: an acute exposure (3 ppm 2 h) for studying the oxidant damage and an exposure (1 ppm 12 h) where an in...