Hypothalamic perineuronal net assembly is required for sustained diabetes remission induced by fibroblast growth factor 1 in rats
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Hypothalamic perineuronal net assembly is required for sustained diabetes remission induced by fibroblast growth factor 1 in rats. / Alonge, Kimberly M.; Mirzadeh, Zaman; Scarlett, Jarrad M.; Logsdon, Aric F.; Brown, Jenny M.; Cabrales, Elaine; Chan, Christina K.; Kaiyala, Karl J.; Bentsen, Marie A.; Banks, William A.; Guttman, Miklos; Wight, Thomas N.; Morton, Gregory J.; Schwartz, Michael W.
In: Nature Metabolism, Vol. 2, No. 10, 2020, p. 1025-1033.Research output: Contribution to journal › Letter › peer-review
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TY - JOUR
T1 - Hypothalamic perineuronal net assembly is required for sustained diabetes remission induced by fibroblast growth factor 1 in rats
AU - Alonge, Kimberly M.
AU - Mirzadeh, Zaman
AU - Scarlett, Jarrad M.
AU - Logsdon, Aric F.
AU - Brown, Jenny M.
AU - Cabrales, Elaine
AU - Chan, Christina K.
AU - Kaiyala, Karl J.
AU - Bentsen, Marie A.
AU - Banks, William A.
AU - Guttman, Miklos
AU - Wight, Thomas N.
AU - Morton, Gregory J.
AU - Schwartz, Michael W.
PY - 2020
Y1 - 2020
N2 - We recently showed that perineuronal nets (PNNs) enmesh glucoregulatory neurons in the arcuate nucleus (Arc) of the mediobasal hypothalamus (MBH)(1), but whether these PNNs play a role in either the pathogenesis of type 2 diabetes (T2D) or its treatment remains unclear. Here we show that PNN abundance within the Arc is markedly reduced in the Zucker diabetic fatty (ZDF) rat model of T2D, compared with normoglycaemic rats, correlating with altered PNN-associated sulfation patterns of chondroitin sulfate glycosaminoglycans in the MBH. Each of these PNN-associated changes is reversed following a single intracerebroventricular (icv) injection of fibroblast growth factor 1 (FGF1) at a dose that induces sustained diabetes remission in male ZDF rats. Combined with previous work localizing this FGF1 effect to the Arc area(2-4), our finding that enzymatic digestion of Arc PNNs markedly shortens the duration of diabetes remission following icv FGF1 injection in these animals identifies these extracellular matrix structures as previously unrecognized participants in the mechanism underlying diabetes remission induced by the central action of FGF1.
AB - We recently showed that perineuronal nets (PNNs) enmesh glucoregulatory neurons in the arcuate nucleus (Arc) of the mediobasal hypothalamus (MBH)(1), but whether these PNNs play a role in either the pathogenesis of type 2 diabetes (T2D) or its treatment remains unclear. Here we show that PNN abundance within the Arc is markedly reduced in the Zucker diabetic fatty (ZDF) rat model of T2D, compared with normoglycaemic rats, correlating with altered PNN-associated sulfation patterns of chondroitin sulfate glycosaminoglycans in the MBH. Each of these PNN-associated changes is reversed following a single intracerebroventricular (icv) injection of fibroblast growth factor 1 (FGF1) at a dose that induces sustained diabetes remission in male ZDF rats. Combined with previous work localizing this FGF1 effect to the Arc area(2-4), our finding that enzymatic digestion of Arc PNNs markedly shortens the duration of diabetes remission following icv FGF1 injection in these animals identifies these extracellular matrix structures as previously unrecognized participants in the mechanism underlying diabetes remission induced by the central action of FGF1.
KW - CHONDROITIN SULFATE D
KW - LIQUID-CHROMATOGRAPHY
KW - EXTRACELLULAR-MATRIX
KW - PREFRONTAL CORTEX
KW - AXON-GROWTH
KW - NEURONS
KW - LEPTIN
KW - PLASTICITY
KW - INJECTION
KW - CARTILAGE
U2 - 10.1038/s42255-020-00275-6
DO - 10.1038/s42255-020-00275-6
M3 - Letter
C2 - 32895577
VL - 2
SP - 1025
EP - 1033
JO - Nature Metabolism
JF - Nature Metabolism
SN - 2522-5812
IS - 10
ER -
ID: 251251815