Eating and Hypothalamus Changes in Behavioral-Variant Frontotemporal Dementia

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Standard

Eating and Hypothalamus Changes in Behavioral-Variant Frontotemporal Dementia. / Piguet, Olivier; Petersén, Åsa; Lam, Bonnie Yin Ka; Gabery, Sanaz; Murphy, Karen; Hodges, John R.; Halliday, Glenda M.

I: Annals of Neurology, Vol. 69, Nr. 2, 2011, s. 312-319.

Forskningsoutput: TidskriftsbidragArtikel i vetenskaplig tidskrift

Harvard

APA

CBE

MLA

Vancouver

Author

Piguet, Olivier ; Petersén, Åsa ; Lam, Bonnie Yin Ka ; Gabery, Sanaz ; Murphy, Karen ; Hodges, John R. ; Halliday, Glenda M. / Eating and Hypothalamus Changes in Behavioral-Variant Frontotemporal Dementia. I: Annals of Neurology. 2011 ; Vol. 69, Nr. 2. s. 312-319.

RIS

TY - JOUR

T1 - Eating and Hypothalamus Changes in Behavioral-Variant Frontotemporal Dementia

AU - Piguet, Olivier

AU - Petersén, Åsa

AU - Lam, Bonnie Yin Ka

AU - Gabery, Sanaz

AU - Murphy, Karen

AU - Hodges, John R.

AU - Halliday, Glenda M.

PY - 2011

Y1 - 2011

N2 - Objective: Behavioral-variant frontotemporal dementia (bvFTD) is a progressive neurodegenerative brain disorder, clinically characterized by changes in cognition, personality, and behavior. Marked disturbances in eating behavior, such as overeating and preference for sweet foods, are also commonly reported. The hypothalamus plays a critical role in feeding regulation, yet the relation between pathology in this region and eating behavior in FTD is unknown. This study aimed to address this issue using 2 complementary approaches. Methods: First, 18 early stage bvFTD patients and 16 healthy controls underwent high-resolution structural magnetic resonance imaging and assessment of eating behavior. Hypothalamic volumes were traced manually on coronal images. Second, postmortem analyses of 12 bvFTD cases and 6 matched controls were performed. Fixed hypothalamic tissue sections were stained for a cell marker and for peptides regulating feeding behaviors using immunohistochemistry. Stereo logical estimates of the hypothalamic volume and the number of neurons and glia were performed. Results: Significant atrophy of the hypothalamus in bvFTD was present in both analyses. Patients with high feeding disturbance exhibited significant atrophy of the posterior hypothalamus. Neuronal loss, which was observed only in bvFTD cases with Tar DNA protein-43 deposition, was also predominant posteriorly. In contrast, orexin (hypocretin), neuropeptide Y, cocaine- and amphetamine-regulating transcript, and vasopressin-containing neurons that regulate appetite were spared in posterior nuclei known to participate in feeding regulation. Interpretation: Degeneration and consequent dysregulation within the hypothalamus relates to significant feeding disturbance in bvFTD. These findings provide a basis for the development of therapeutic models. ANN NEUROL 2011;69:312-319

AB - Objective: Behavioral-variant frontotemporal dementia (bvFTD) is a progressive neurodegenerative brain disorder, clinically characterized by changes in cognition, personality, and behavior. Marked disturbances in eating behavior, such as overeating and preference for sweet foods, are also commonly reported. The hypothalamus plays a critical role in feeding regulation, yet the relation between pathology in this region and eating behavior in FTD is unknown. This study aimed to address this issue using 2 complementary approaches. Methods: First, 18 early stage bvFTD patients and 16 healthy controls underwent high-resolution structural magnetic resonance imaging and assessment of eating behavior. Hypothalamic volumes were traced manually on coronal images. Second, postmortem analyses of 12 bvFTD cases and 6 matched controls were performed. Fixed hypothalamic tissue sections were stained for a cell marker and for peptides regulating feeding behaviors using immunohistochemistry. Stereo logical estimates of the hypothalamic volume and the number of neurons and glia were performed. Results: Significant atrophy of the hypothalamus in bvFTD was present in both analyses. Patients with high feeding disturbance exhibited significant atrophy of the posterior hypothalamus. Neuronal loss, which was observed only in bvFTD cases with Tar DNA protein-43 deposition, was also predominant posteriorly. In contrast, orexin (hypocretin), neuropeptide Y, cocaine- and amphetamine-regulating transcript, and vasopressin-containing neurons that regulate appetite were spared in posterior nuclei known to participate in feeding regulation. Interpretation: Degeneration and consequent dysregulation within the hypothalamus relates to significant feeding disturbance in bvFTD. These findings provide a basis for the development of therapeutic models. ANN NEUROL 2011;69:312-319

U2 - 10.1002/ana.22244

DO - 10.1002/ana.22244

M3 - Article

VL - 69

SP - 312

EP - 319

JO - Annals of Neurology

T2 - Annals of Neurology

JF - Annals of Neurology

SN - 1531-8249

IS - 2

ER -