Dietary magnesium deficiency alters gut microbiota and leads to depressive-like behaviour
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Dietary magnesium deficiency alters gut microbiota and leads to depressive-like behaviour. / Winther, Gudrun; Jørgensen, Betina M. Pyndt; Elfving, Betina; Nielsen, Dennis Sandris; Kihl, Pernille; Lund, Sten; Sørensen, Dorte Bratbo; Wegener, Gregers.
In: Acta Neuropsychiatrica (Print), Vol. 27, No. 3, 2015, p. 168-176.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Dietary magnesium deficiency alters gut microbiota and leads to depressive-like behaviour
AU - Winther, Gudrun
AU - Jørgensen, Betina M. Pyndt
AU - Elfving, Betina
AU - Nielsen, Dennis Sandris
AU - Kihl, Pernille
AU - Lund, Sten
AU - Sørensen, Dorte Bratbo
AU - Wegener, Gregers
PY - 2015
Y1 - 2015
N2 - OBJECTIVE: Gut microbiota (GM) has previously been associated with alterations in rodent behaviour, and since the GM is affected by the diet, the composition of the diet may be an important factor contributing to behavioural changes. Interestingly, a magnesium restricted diet has been shown to induce anxiety and depressive-like behaviour in humans and rodents, and it could be suggested that magnesium deficiency may mediate the effects through an altered GM.METHODS: The present study therefore fed C57BL/6 mice with a standard diet or a magnesium deficient diet (MgD) for 6 weeks, followed by behavioural testing in the forced swim test (FST) to evaluate depressive-like behaviour. An intraperitoneal glucose tolerance test (GTT) was performed 2 day after the FST to assess metabolic alterations. Neuroinflammatory markers were analysed from hippocampus. GM composition was analysed and correlated to the behaviour and hippocampal markers.RESULTS: It was found that mice exposed to MgD for 6 weeks were more immobile than control mice in the FST, suggesting an increased depressive-like behaviour. No significant difference was detected in the GTT. GM composition correlated positively with the behaviour of undisturbed C57BL/6 mice, feeding MgD diet altered the microbial composition. The altered GM correlated positively to the hippocampal interleukin-6.CONCLUSION: In conclusion, we hypothesise that imbalances of the microbiota-gut-brain axis induced by consuming a MgD diet, contributes to the development of depressive-like behaviour.
AB - OBJECTIVE: Gut microbiota (GM) has previously been associated with alterations in rodent behaviour, and since the GM is affected by the diet, the composition of the diet may be an important factor contributing to behavioural changes. Interestingly, a magnesium restricted diet has been shown to induce anxiety and depressive-like behaviour in humans and rodents, and it could be suggested that magnesium deficiency may mediate the effects through an altered GM.METHODS: The present study therefore fed C57BL/6 mice with a standard diet or a magnesium deficient diet (MgD) for 6 weeks, followed by behavioural testing in the forced swim test (FST) to evaluate depressive-like behaviour. An intraperitoneal glucose tolerance test (GTT) was performed 2 day after the FST to assess metabolic alterations. Neuroinflammatory markers were analysed from hippocampus. GM composition was analysed and correlated to the behaviour and hippocampal markers.RESULTS: It was found that mice exposed to MgD for 6 weeks were more immobile than control mice in the FST, suggesting an increased depressive-like behaviour. No significant difference was detected in the GTT. GM composition correlated positively with the behaviour of undisturbed C57BL/6 mice, feeding MgD diet altered the microbial composition. The altered GM correlated positively to the hippocampal interleukin-6.CONCLUSION: In conclusion, we hypothesise that imbalances of the microbiota-gut-brain axis induced by consuming a MgD diet, contributes to the development of depressive-like behaviour.
U2 - 10.1017/neu.2015.7
DO - 10.1017/neu.2015.7
M3 - Journal article
C2 - 25690713
VL - 27
SP - 168
EP - 176
JO - Acta Neuropsychiatrica
JF - Acta Neuropsychiatrica
SN - 0924-2708
IS - 3
ER -
ID: 140386552