Hyperparathyroid crisis in a pediatric patient.

Primary hyperparathyroidism is rarely found in the pediatric population. Delays in diagnosis due to vague symptoms can lead to severe disease manifestations such as osteitis fibrosa cystica. We report a rare case of primary hyperparathyroidism in a 13-year-old girl who presented with a pathological femur fracture and numerous brown tumors.

Volume analysis of preadipocyte injection for vocal cord medialization.

Objective: To compare the volume retention of injected preadipocytes with that of standard fat injection in a paralyzed rabbit true vocal cord.

Study Design: Prospective analysis with blinded data collection.

Methods: Thirteen New Zealand white rabbits were divided into two groups.

Age-related differences of neutrophil activation in a skeletal muscle ischemia-reperfusion model.

Free tissue transfers and replantation of amputated limbs are better tolerated by young adolescents than mature adults. The authors hypothesized that this observation may be, in part, because of an attenuated ischemia-reperfusion (IR) injury in younger patients. Because neutrophils have been identified as a critical cell line responsible for IR injury, the authors investigated the effects of animal age on the degree of neutrophil activation in a rat model.

Hsp70 in the inferior colliculus of Fischer-344 rats: effects of age and acoustic stress.

Heat shock proteins 72 and 73 (hsp72 and hsp73) were studied in the inferior colliculus (IC) of Fischer-344 rats to determine if their levels are altered during normal aging and following exposure to intense acoustic noise. Three age groups of rats (3, 18, and 25 months) were exposed to ambient sound (control) or broad-band noise at 108 dB sound pressure level (0.0004 dyn/cm2) for 30 min.