Low-Dose Occupational Exposure to Nickel and Thyroid Hormones.

Introduction: The aim of this study was to evaluate the effects of a low-dose exposure to nickel, as it is present in urban air, on thyroid hormones and on thyrotropin in outdoor workers exposed to urban pollutants.

Materials And Methods: A total of 164 outdoor workers were studied and divided by sex and smoking habit. Each worker underwent measurement of urinary nickel and of blood triiodothyronine, L-thyroxine, and thyrotropin levels.

No Correlation between Blood Benzene Levels and Luteinizing Hormone Plasma Values in Outdoor Workers.

Objective: The purpose of the study is to evaluate whether low-dose exposure to benzene, an environmental pollutant to which male and female traffic policemen are daily exposed to could cause alterations in plasma luteinizing hormone (LH) levels.

Methods: From an initial sample of 1594 workers, we only selected 95 workers of whom study we knew the values of late-shift benzene and LH hormone. All subjects underwent biological monitoring (final blood benzene evaluation) and luteinizing hormone dosing.

Screening microalgae isolated from urban storm- and wastewater systems as feedstock for biofuel.

Exploiting microalgae as feedstock for biofuel production is a growing field of research and application, but there remain challenges related to industrial viability and economic sustainability. A solution to the water requirements of industrial-scale production is the use of wastewater as a growth medium. Considering the variable quality and contaminant loads of wastewater, algal feedstock would need to have broad tolerance and resilience to fluctuating wastewater conditions during growth.

[Evaluation of liver function between indoor and outdoor workers: preliminary results].

Introduction: The aim of our study is to compare liver damage in "outdoor" environment technicians, a category occupationally exposed, and in "indoor" workers.

Materials And Methods: We studied 142 male technicians of the environment exposed to urban pollution and 142 male "indoor" workers not exposed. We compared mean and standard deviation of the following liver parameters: glutamic oxaloacetic transaminase (GOT), glutamic pyruvic transaminase (GPT), gamma-glutamyl-traspeptidasi (γGT) and alkaline phosphatase (PHA), total bilirubin (TB) and direct (DB).

Growth and fatty acid characterization of microalgae isolated from municipal waste-treatment systems and the potential role of algal-associated bacteria in feedstock production.

Much research has focused on growing microalgae for biofuel feedstock, yet there remain concerns about the feasibility of freshwater feedstock systems. To reduce cost and improve environmental sustainability, an ideal microalgal feedstock system would be fed by municipal, agricultural or industrial wastewater as a main source of water and nutrients. Nonetheless, the microalgae must also be tolerant of fluctuating wastewater quality, while still producing adequate biomass and lipid yields.

Can noise cause high blood pressure? Occupational risk in paper industry.

Objectives: The authors hypothesize cardiovascular effects in paper industry workers exposed to noise.

Materials And Methods: The study included 72 paper industry workers exposed to noise and two control groups not exposed to noise. The workers completed a questionnaire and underwent a medical examination, measurement of blood pressure, electrocardiogram, blood tests, audiometry and measurement of noise exposure.

[Urban individual exposure to cadmium and baroreceptor response to posture].

Objective: Outdoor workers are daily exposed to urban pollutants. The aim of the study is to evaluate the relationship between the values of environmental monitoring collected by personal dosimetries and changes in blood pressure due to posture in outdoor workers.

Materials And Methods: 32 subjects of both sexes were enrolled in the study, we evaluated the values of environmental monitoring of breathable dust, nickel, arsenic, cadmium, lead, benzene, toluene, xylene and 16 PAHs.