Presse Med
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Review Comparative Study
[Cancer of the prostate: influence of nutritional factors. Vitamins, antioxidants and trace elements].
CANCER OF THE PROSTATE AND VITAMINS: Four vitamins have been studied, vitamins A, E, D and C. the results of these studies have been contradictory. Vitamin A and vitamin E would have a protective effect. ANTIOXIDANTS: Carotenes have an activity similar to that of vitamin A. Beta-carotene was positively associated with risk of cancer of the prostate in one study while two others were unable to demonstrate any relationship. Lycopene, the red color in fruits and vegetables, particularly tomatoes, would contribute to a lower risk of prostate cancer. ⋯ Cadmium would increase the risk of cancer while selenium would have a protective effect. However studies concerning selenium carry certain methodological biases.
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PREDOMINANT IN CHILDREN: Tinea capitis is the most frequent fungal infection in children under the age of puberty. It occurs only rarely in men but is observed in adult women. Human-to-human, animal-to-human and soil-to-human transmission can be involved.
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A COMMON DISORDER: Sleep is one of the most often altered functions in elderly people. Obviously, insomnia is one of the main complain, inducing benzodiazepine (BSD) abuse, but we must keep in mind that sleep apnoea syndrome (SAS) and restless legs syndrome (RLS) are also frequent in this group of age. After exclusion of the various age-related conditions that could induce sleep disorders, we must focalise on primary and secondary sleep disorders. ⋯ It is important to note that SAS and RLS prevalence are correlated with age. Also crucial is the complex association between sleep, depression and dementia. These interactions are addressed from a diagnostic and a therapeutic point of view.
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GAIT IS A VOLUNTARY, AUTOMATIC AND REFLEX RHYTHMIC ACTIVITY: It is generated by a central pattern generator identified from animal models. This spinal gait generator (SGG) is controlled by various parts of the central nervous system: the descending tracts and locomotor regions of the brainstem, the cerebellum, the basal ganglia, the motor and parietal cortex and the hippocampus. Kinesthetic inputs which project to the SGG and the cerebellum, play an important role in the production of postural reflex responses; vestibular and visual inputs mainly control balance.