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Biomedical subjects

C A Baud

Publications and source records attributed to C A Baud.

69 records · Page 4Linked to original sources
PubMedDate not supplied

Physical and chemical analyses of the mineral substance during the development of two experimental cutaneous calcifications in rats: topical calciphylaxis and topical calcergy.

In subcutaneous calcinoses induced in rats by topical calciphylaxis and topical calcergy, the ultrastructural aspects related to the evolution of calcified deposits were previously described. In the present study by means of X-ray diffraction, infrared spectrometry and electron spin resonance, different biophysical analyses are performed on the mineral substance deposited during development of calciphylaxis and calcergy. A rapid evolution of the calcium phosphate deposits into hydroxyapatite was noticed along the first 20 days of the calcinoses; from then, there is no important modification even at the later stages, and the characteristics of the mineral substance are mostly similar to that of bone tissue. The concentration of trace elements such as Mg2+ and Fe2+, is found higher in cutaneous calcinoses than in bone tissue.

Animals↗
PubMedDate not supplied

Rheumatic diseases in Neolithic and Medieval populations of western Switzerland.

An investigation of three groups from ancient populations (Neolithic, Early Middle Ages, Middle Ages) was performed on 273 adult skeletons. Despite unequal preservation of the remains, a study of a series of large joints and spinal segments permitted some conclusions: rheumatoid arthritis, ankylosing spondylitis, and osteoarthrosis of large joints (hip, knee, shoulder) were not found. The main findings were: osteoarthrosis in spinal zygapophyseal joints (particularly at cervical level); intervertebral osteochondrosis (particularly at the cervical and lumbar levels); Schmorl's nodes (particularly at the thoracic and lumbar levels); enthesopathic osteophytes (particularly in the spine, iliac crest, patella, and calcaneus). Such deformities seemed more frequent in the Middle Ages than in the Neolithic period.

Arthritis, Rheumatoid↗