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Biomedical subjects

Marco Grandi

Publications and source records attributed to Marco Grandi.

3 recordsLinked to original sources

Progressive supranuclear gaze palsy without parkinsonism: a case of neuro-Whipple.

We report the case of a 69-year-old man with a 7-month history of severe progressive supranuclear gaze palsy associated with mild cognitive decline and sleep disturbances, but not parkinsonism. After a period spent consulting a range of different specialists, the appearance of brachial myoclonus prompted his referral to a movement disorders specialist. Duodenum biopsy confirmed the suspicion of neuro-Whipple disease. Antibiotic therapy was started but the delay in the diagnosis proved fatal to this patient. This noteworthy case shows unusual neurological features of a rare but treatable disease, often misdiagnosed as progressive supranuclear palsy.

Aged↗

Dental amalgam and mercury levels in autopsy tissues: food for thought.

Eighteen cadavers from routine autopsy casework were subject to a study of tissue levels of total mercury in brain, thyroid, and kidney samples by atomic absorption. On these same cadavers, all dental amalgam fillings (the most important source of inorganic mercury exposure in the general population, according to the World Health Organization (WHO) were charted. Total mercury levels were significantly higher in subjects with a greater number of occlusal amalgam surfaces (>12) compared with those with fewer occlusal amalgams (0-3) in all types of tissue (all P < or = 0.04). Mercury levels were significantly higher in brain tissues compared with thyroid and kidney tissues in subjects with more than 12 occlusal amalgam fillings (all P < or = 0.01) but not in subjects with 3 or less occlusal amalgams (all P > or = 0.07).

Brain Chemistry↗