1
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Paniccia JE, Vollmer KM, Green LM, Grant RI, Winston KT, Buchmaier S, Westphal AM, Clarke RE, Doncheck EM, Bordieanu B, Manusky LM, Martino MR, Ward AL, Rinker JA, McGinty JF, Scofield MD, Otis JM. Restoration of a paraventricular thalamo-accumbal behavioral suppression circuit prevents reinstatement of heroin seeking. Neuron 2024; 112:772-785.e9. [PMID: 38141605 PMCID: PMC10939883 DOI: 10.1016/j.neuron.2023.11.024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 10/17/2023] [Accepted: 11/29/2023] [Indexed: 12/25/2023]
Abstract
Lack of behavioral suppression typifies substance use disorders, yet the neural circuit underpinnings of drug-induced behavioral disinhibition remain unclear. Here, we employ deep-brain two-photon calcium imaging in heroin self-administering mice, longitudinally tracking adaptations within a paraventricular thalamus to nucleus accumbens behavioral inhibition circuit from the onset of heroin use to reinstatement. We find that select thalamo-accumbal neuronal ensembles become profoundly hypoactive across the development of heroin seeking and use. Electrophysiological experiments further reveal persistent adaptations at thalamo-accumbal parvalbumin interneuronal synapses, whereas functional rescue of these synapses prevents multiple triggers from initiating reinstatement of heroin seeking. Finally, we find an enrichment of μ-opioid receptors in output- and cell-type-specific paraventricular thalamic neurons, which provide a mechanism for heroin-induced synaptic plasticity and behavioral disinhibition. These findings reveal key circuit adaptations that underlie behavioral disinhibition in opioid dependence and further suggest that recovery of this system would reduce relapse susceptibility.
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Affiliation(s)
- Jacqueline E Paniccia
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA; Department of Anesthesia & Perioperative Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Kelsey M Vollmer
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Lisa M Green
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Roger I Grant
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Kion T Winston
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Sophie Buchmaier
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Annaka M Westphal
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA; Department of Anesthesia & Perioperative Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Rachel E Clarke
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA; Department of Anesthesia & Perioperative Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Elizabeth M Doncheck
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Bogdan Bordieanu
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Logan M Manusky
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Michael R Martino
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Amy L Ward
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Jennifer A Rinker
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Jacqueline F McGinty
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Michael D Scofield
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA; Department of Anesthesia & Perioperative Medicine, Medical University of South Carolina, Charleston, SC 29425, USA
| | - James M Otis
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC 29425, USA; Hollings Cancer Center, Medical University of South Carolina, Charleston, SC 29425, USA; Ralph Johnson Veterans Administration, Charleston, SC 29425, USA.
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2
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Reed F, Reichenbach A, Dempsey H, Clarke RE, Mequinion M, Stark R, Rawlinson S, Foldi CJ, Lockie SH, Andrews ZB. Acute inhibition of hunger-sensing AgRP neurons promotes context-specific learning in mice. Mol Metab 2023; 77:101803. [PMID: 37690518 PMCID: PMC10523265 DOI: 10.1016/j.molmet.2023.101803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 08/29/2023] [Accepted: 09/06/2023] [Indexed: 09/12/2023] Open
Abstract
OBJECTIVE An environmental context, which reliably predicts food availability, can increase the appetitive food drive within the same environment context. However, hunger is required for the development of such a context-induced feeding (CIF) response, suggesting the neural circuits sensitive to hunger link an internal energy state with a particular environment context. Since Agouti related peptide (AgRP) neurons are activated by energy deficit, we hypothesised that AgRP neurons are both necessary and sufficient to drive CIF. METHODS To examine the role of AgRP neurons in the CIF process, we used fibre photometry with GCaMP7f, chemogenetic activation of AgRP neurons, as well as optogenetic control of AgRP neurons to facilitate acute temporal control not permitted with chemogenetics. RESULTS A CIF response at test was only observed when mice were fasted during context training and AgRP population activity at test showed an attenuated inhibitory response to food, suggesting increased food-seeking and/or decreased satiety signalling drives the increased feeding response at test. Intriguingly, chemogenetic activation of AgRP neurons during context training did not increase CIF, suggesting precise temporal firing properties may be required. Indeed, termination of AgRP neuronal photostimulation during context training (ON-OFF in context), in the presence or absence of food, increased CIF. Moreover, photoinhibition of AgRP neurons during context training in fasted mice was sufficient to drive a subsequent CIF in the absence of food. CONCLUSIONS Our results suggest that AgRP neurons regulate the acquisition of CIF when the acute inhibition of AgRP activity is temporally matched to context exposure. These results establish acute AgRP inhibition as a salient neural event underscoring the effect of hunger on associative learning.
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Affiliation(s)
- Felicia Reed
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, 3800, Victoria, Australia
| | - Alex Reichenbach
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, 3800, Victoria, Australia
| | - Harry Dempsey
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, 3800, Victoria, Australia
| | - Rachel E Clarke
- Department of Neurosciences, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Mathieu Mequinion
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, 3800, Victoria, Australia
| | - Romana Stark
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, 3800, Victoria, Australia
| | - Sasha Rawlinson
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, 3800, Victoria, Australia
| | - Claire J Foldi
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, 3800, Victoria, Australia
| | - Sarah H Lockie
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, 3800, Victoria, Australia
| | - Zane B Andrews
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, 3800, Victoria, Australia.
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Vollmer KM, Green LM, Grant RI, Winston KT, Doncheck EM, Bowen CW, Paniccia JE, Clarke RE, Tiller A, Siegler PN, Bordieanu B, Siemsen BM, Denton AR, Westphal AM, Jhou TC, Rinker JA, McGinty JF, Scofield MD, Otis JM. Author Correction: An opioid-gated thalamoaccumbal circuit for the suppression of reward seeking in mice. Nat Commun 2023; 14:4733. [PMID: 37550296 PMCID: PMC10406923 DOI: 10.1038/s41467-023-40431-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023] Open
Affiliation(s)
- Kelsey M Vollmer
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Lisa M Green
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Roger I Grant
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Kion T Winston
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Elizabeth M Doncheck
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Christopher W Bowen
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Jacqueline E Paniccia
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Rachel E Clarke
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Annika Tiller
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Preston N Siegler
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Bogdan Bordieanu
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Benjamin M Siemsen
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Adam R Denton
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Annaka M Westphal
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Thomas C Jhou
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Jennifer A Rinker
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Jacqueline F McGinty
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Michael D Scofield
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - James M Otis
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA.
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, 29425, USA.
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4
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Clarke RE, Voigt K, Reichenbach A, Stark R, Bharania U, Dempsey H, Lockie SH, Mequinion M, Lemus M, Wei B, Reed F, Rawlinson S, Nunez-Iglesias J, Foldi CJ, Kravitz AV, Verdejo-Garcia A, Andrews ZB. Identification of a Stress-Sensitive Anorexigenic Neurocircuit From Medial Prefrontal Cortex to Lateral Hypothalamus. Biol Psychiatry 2023; 93:309-321. [PMID: 36400605 DOI: 10.1016/j.biopsych.2022.08.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2022] [Revised: 08/04/2022] [Accepted: 08/04/2022] [Indexed: 01/24/2023]
Abstract
BACKGROUND A greater understanding of how the brain controls appetite is fundamental to developing new approaches for treating diseases characterized by dysfunctional feeding behavior, such as obesity and anorexia nervosa. METHODS By modeling neural network dynamics related to homeostatic state and body mass index, we identified a novel pathway projecting from the medial prefrontal cortex (mPFC) to the lateral hypothalamus (LH) in humans (n = 53). We then assessed the physiological role and dissected the function of this mPFC-LH circuit in mice. RESULTS In vivo recordings of population calcium activity revealed that this glutamatergic mPFC-LH pathway is activated in response to acute stressors and inhibited during food consumption, suggesting a role in stress-related control over food intake. Consistent with this role, inhibition of this circuit increased feeding and sucrose seeking during mild stressors, but not under nonstressful conditions. Finally, chemogenetic or optogenetic activation of the mPFC-LH pathway is sufficient to suppress food intake and sucrose seeking in mice. CONCLUSIONS These studies identify a glutamatergic mPFC-LH circuit as a novel stress-sensitive anorexigenic neural pathway involved in the cortical control of food intake.
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Affiliation(s)
- Rachel E Clarke
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Katharina Voigt
- Turner Institute for Brain and Mental Health, Monash University, Clayton, Victoria, Australia
| | - Alex Reichenbach
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Romana Stark
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Urvi Bharania
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Harry Dempsey
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Sarah H Lockie
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Mathieu Mequinion
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Moyra Lemus
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Bowen Wei
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Felicia Reed
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Sasha Rawlinson
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Juan Nunez-Iglesias
- Monash Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, Australia
| | - Claire J Foldi
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia
| | - Alexxai V Kravitz
- Departments of Psychiatry, Anesthesiology, and Neuroscience, Washington University in St. Louis, St. Louis, Missouri
| | - Antonio Verdejo-Garcia
- Turner Institute for Brain and Mental Health, Monash University, Clayton, Victoria, Australia
| | - Zane B Andrews
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, Australia.
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5
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Vollmer KM, Green LM, Grant RI, Winston KT, Doncheck EM, Bowen CW, Paniccia JE, Clarke RE, Tiller A, Siegler PN, Bordieanu B, Siemsen BM, Denton AR, Westphal AM, Jhou TC, Rinker JA, McGinty JF, Scofield MD, Otis JM. An opioid-gated thalamoaccumbal circuit for the suppression of reward seeking in mice. Nat Commun 2022; 13:6865. [PMID: 36369508 PMCID: PMC9652456 DOI: 10.1038/s41467-022-34517-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Accepted: 10/26/2022] [Indexed: 11/13/2022] Open
Abstract
Suppression of dangerous or inappropriate reward-motivated behaviors is critical for survival, whereas therapeutic or recreational opioid use can unleash detrimental behavioral actions and addiction. Nevertheless, the neuronal systems that suppress maladaptive motivated behaviors remain unclear, and whether opioids disengage those systems is unknown. In a mouse model using two-photon calcium imaging in vivo, we identify paraventricular thalamostriatal neuronal ensembles that are inhibited upon sucrose self-administration and seeking, yet these neurons are tonically active when behavior is suppressed by a fear-provoking predator odor, a pharmacological stressor, or inhibitory learning. Electrophysiological, optogenetic, and chemogenetic experiments reveal that thalamostriatal neurons innervate accumbal parvalbumin interneurons through synapses enriched with calcium permeable AMPA receptors, and activity within this circuit is necessary and sufficient for the suppression of sucrose seeking regardless of the behavioral suppressor administered. Furthermore, systemic or intra-accumbal opioid injections rapidly dysregulate thalamostriatal ensemble dynamics, weaken thalamostriatal synaptic innervation of downstream neurons, and unleash reward-seeking behaviors in a manner that is reversed by genetic deletion of thalamic µ-opioid receptors. Overall, our findings reveal a thalamostriatal to parvalbumin interneuron circuit that is both required for the suppression of reward seeking and rapidly disengaged by opioids.
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Affiliation(s)
- Kelsey M Vollmer
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Lisa M Green
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Roger I Grant
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Kion T Winston
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Elizabeth M Doncheck
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Christopher W Bowen
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Jacqueline E Paniccia
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Rachel E Clarke
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Annika Tiller
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Preston N Siegler
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Bogdan Bordieanu
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Benjamin M Siemsen
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Adam R Denton
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Annaka M Westphal
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Thomas C Jhou
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Jennifer A Rinker
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Jacqueline F McGinty
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - Michael D Scofield
- Anesthesiology and Perioperative Medicine, Medical University of South Carolina, Charleston, SC, 29425, USA
| | - James M Otis
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, 29425, USA.
- Hollings Cancer Center, Medical University of South Carolina, Charleston, SC, 29425, USA.
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6
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Rawlinson S, Reichenbach A, Clarke RE, Nuñez-Iglesias J, Dempsey H, Lockie SH, Andrews ZB. In Vivo Photometry Reveals Insulin and 2-Deoxyglucose Maintain Prolonged Inhibition of VMH Vglut2 Neurons in Male Mice. Endocrinology 2022; 163:6631280. [PMID: 35788848 DOI: 10.1210/endocr/bqac095] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Indexed: 11/19/2022]
Abstract
The ventromedial hypothalamic (VMH) nucleus is a well-established hub for energy and glucose homeostasis. In particular, VMH neurons are thought to be important for initiating the counterregulatory response to hypoglycemia, and ex vivo electrophysiology and immunohistochemistry data indicate a clear role for VMH neurons in sensing glucose concentration. However, the temporal response of VMH neurons to physiologically relevant changes in glucose availability in vivo has been hampered by a lack of available tools for measuring neuronal activity over time. Since the majority of neurons within the VMH are glutamatergic and can be targeted using the vesicular glutamate transporter Vglut2, we expressed cre-dependent GCaMP7s in Vglut2 cre mice and examined the response profile of VMH to intraperitoneal injections of glucose, insulin, and 2-deoxyglucose (2DG). We show that reduced available glucose via insulin-induced hypoglycemia and 2DG-induced glucoprivation, but not hyperglycemia induced by glucose injection, inhibits VMH Vglut2 neuronal population activity in vivo. Surprisingly, this inhibition was maintained for at least 45 minutes despite prolonged hypoglycemia and initiation of a counterregulatory response. Thus, although VMH stimulation, via pharmacological, electrical, or optogenetic approaches, is sufficient to drive a counterregulatory response, our data suggest VMH Vglut2 neurons are not the main drivers required to do so, since VMH Vglut2 neuronal population activity remains suppressed during hypoglycemia and glucoprivation.
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Affiliation(s)
- Sasha Rawlinson
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, 3800, Australia
| | - Alex Reichenbach
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, 3800, Australia
| | - Rachel E Clarke
- Department of Neurosciences, Medical University of South Carolina, Charleston, South Carolina 29425, USA
| | - Juan Nuñez-Iglesias
- Monash Biomedicine Discovery Institute and Department of Anatomy and Developmental Biology, Monash University, Clayton, Victoria, 3800, Australia
| | - Harry Dempsey
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, 3800, Australia
| | - Sarah H Lockie
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, 3800, Australia
| | - Zane B Andrews
- Monash Biomedicine Discovery Institute and Department of Physiology, Monash University, Clayton, Victoria, 3800, Australia
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7
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Reichenbach A, Clarke RE, Stark R, Lockie SH, Mequinion M, Dempsey H, Rawlinson S, Reed F, Sepehrizadeh T, DeVeer M, Munder AC, Nunez-Iglesias J, Spanswick D, Mynatt R, Kravitz AV, Dayas CV, Brown R, Andrews ZB. Metabolic sensing in AgRP neurons integrates homeostatic state with dopamine signalling in the striatum. eLife 2022; 11:72668. [PMID: 35018884 PMCID: PMC8803314 DOI: 10.7554/elife.72668] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Accepted: 01/11/2022] [Indexed: 11/17/2022] Open
Abstract
Agouti-related peptide (AgRP) neurons increase motivation for food, however, whether metabolic sensing of homeostatic state in AgRP neurons potentiates motivation by interacting with dopamine reward systems is unexplored. As a model of impaired metabolic-sensing, we used the AgRP-specific deletion of carnitine acetyltransferase (Crat) in mice. We hypothesised that metabolic sensing in AgRP neurons is required to increase motivation for food reward by modulating accumbal or striatal dopamine release. Studies confirmed that Crat deletion in AgRP neurons (KO) impaired ex vivo glucose-sensing, as well as in vivo responses to peripheral glucose injection or repeated palatable food presentation and consumption. Impaired metabolic-sensing in AgRP neurons reduced acute dopamine release (seconds) to palatable food consumption and during operant responding, as assessed by GRAB-DA photometry in the nucleus accumbens, but not the dorsal striatum. Impaired metabolic-sensing in AgRP neurons suppressed radiolabelled 18F-fDOPA accumulation after ~30 min in the dorsal striatum but not the nucleus accumbens. Impaired metabolic sensing in AgRP neurons suppressed motivated operant responding for sucrose rewards during fasting. Thus, metabolic-sensing in AgRP neurons is required for the appropriate temporal integration and transmission of homeostatic hunger-sensing to dopamine signalling in the striatum.
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Affiliation(s)
| | - Rachel E Clarke
- Department of Physiology, Monash University, Clayton, Australia
| | - Romana Stark
- Department of Physiology, Monash University, Clayton, Australia
| | - Sarah H Lockie
- Department of Physiology, Monash University, Clayton, Australia
| | | | - Harry Dempsey
- Department of Physiology, Monash University, Clayton, Australia
| | - Sasha Rawlinson
- Department of Physiology, Monash University, Clayton, Australia
| | - Felicia Reed
- Department of Physiology, Monash University, Clayton, Australia
| | - Tara Sepehrizadeh
- Monash Biomedical Imaging Facility, Monash University, Clayton, Australia
| | - Michael DeVeer
- Monash Biomedical Imaging Facility, Monash University, Clayton, Australia
| | - Astrid C Munder
- Department of Physiology, Monash University, Clayton, Australia
| | - Juan Nunez-Iglesias
- Department of Anatomy and Developmental Biology, Monash University, Clayton, Australia
| | - David Spanswick
- Department of Physiology, Monash University, Clayton, Australia
| | - Randall Mynatt
- Gene Nutrient Interactions Laboratory, Pennington Biomedical Research Center, Baton Rouge, United States
| | - Alexxai V Kravitz
- Departments of Psychiatry, Washington University in St. Louis, Saint Louis, United States
| | - Christopher V Dayas
- School of Biomedical Sciences and Pharmacy, University of Newcastle, Callaghan, Australia
| | - Robyn Brown
- Department of Biochemistry and Pharmacology, University of Melbourne, Parkville, Australia
| | - Zane B Andrews
- Department of Physiology, Monash University, Clayton, Australia
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8
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Snelson M, Tan SM, Clarke RE, de Pasquale C, Thallas-Bonke V, Nguyen TV, Penfold SA, Harcourt BE, Sourris KC, Lindblom RS, Ziemann M, Steer D, El-Osta A, Davies MJ, Donnellan L, Deo P, Kellow NJ, Cooper ME, Woodruff TM, Mackay CR, Forbes JM, Coughlan MT. Processed foods drive intestinal barrier permeability and microvascular diseases. Sci Adv 2021; 7:7/14/eabe4841. [PMID: 33789895 PMCID: PMC8011970 DOI: 10.1126/sciadv.abe4841] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 02/12/2021] [Indexed: 05/04/2023]
Abstract
Intake of processed foods has increased markedly over the past decades, coinciding with increased microvascular diseases such as chronic kidney disease (CKD) and diabetes. Here, we show in rodent models that long-term consumption of a processed diet drives intestinal barrier permeability and an increased risk of CKD. Inhibition of the advanced glycation pathway, which generates Maillard reaction products within foods upon thermal processing, reversed kidney injury. Consequently, a processed diet leads to innate immune complement activation and local kidney inflammation and injury via the potent proinflammatory effector molecule complement 5a (C5a). In a mouse model of diabetes, a high resistant starch fiber diet maintained gut barrier integrity and decreased severity of kidney injury via suppression of complement. These results demonstrate mechanisms by which processed foods cause inflammation that leads to chronic disease.
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Affiliation(s)
- Matthew Snelson
- Department of Diabetes, Central Clinical School, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Victoria, Australia
| | - Sih Min Tan
- Department of Diabetes, Central Clinical School, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Victoria, Australia
| | - Rachel E Clarke
- Monash Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
| | - Cassandra de Pasquale
- Department of Diabetes, Central Clinical School, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Victoria, Australia
| | - Vicki Thallas-Bonke
- Department of Diabetes, Central Clinical School, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Victoria, Australia
| | - Tuong-Vi Nguyen
- Department of Diabetes, Central Clinical School, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Victoria, Australia
| | - Sally A Penfold
- Department of Diabetes, Central Clinical School, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Victoria, Australia
| | - Brooke E Harcourt
- Murdoch Children's Research Institute, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Karly C Sourris
- Department of Diabetes, Central Clinical School, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Victoria, Australia
| | - Runa S Lindblom
- Department of Diabetes, Central Clinical School, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Victoria, Australia
| | - Mark Ziemann
- Deakin University, School of Life and Environmental Sciences, Geelong, Victoria, Australia
| | - David Steer
- Monash Proteomics and Metabolomics Facility, Monash University, Melbourne, Victoria, Australia
| | - Assam El-Osta
- Department of Diabetes, Central Clinical School, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Victoria, Australia
| | - Michael J Davies
- Department of Biomedical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Leigh Donnellan
- Health and Biomedical Innovation, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - Permal Deo
- Health and Biomedical Innovation, School of Pharmacy and Medical Sciences, University of South Australia, Adelaide, South Australia, Australia
| | - Nicole J Kellow
- Department of Nutrition, Dietetics and Food, Monash University, Melbourne, Victoria, Australia
| | - Mark E Cooper
- Department of Diabetes, Central Clinical School, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Victoria, Australia
| | - Trent M Woodruff
- School of Biomedical Sciences, University of Queensland, Brisbane, Queensland, Australia
| | - Charles R Mackay
- Infection and Immunity Program, Monash Biomedicine Discovery Institute, Monash University, Melbourne, Victoria, Australia
- Department of Microbiology, Monash University, Melbourne, Victoria, Australia
| | - Josephine M Forbes
- Glycation and Diabetes Group, Mater Research Institute-The University of Queensland, Translational Research Institute, Woolloongabba, Queensland, Australia
| | - Melinda T Coughlan
- Department of Diabetes, Central Clinical School, Alfred Medical Research and Education Precinct, Monash University, Melbourne, Victoria, Australia.
- Baker Heart and Diabetes Institute, Melbourne, Victoria, Australia
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9
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Matikainen-Ankney BA, Earnest T, Ali M, Casey E, Wang JG, Sutton AK, Legaria AA, Barclay KM, Murdaugh LB, Norris MR, Chang YH, Nguyen KP, Lin E, Reichenbach A, Clarke RE, Stark R, Conway SM, Carvalho F, Al-Hasani R, McCall JG, Creed MC, Cazares V, Buczynski MW, Krashes MJ, Andrews ZB, Kravitz AV. An open-source device for measuring food intake and operant behavior in rodent home-cages. eLife 2021; 10:66173. [PMID: 33779547 PMCID: PMC8075584 DOI: 10.7554/elife.66173] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 03/26/2021] [Indexed: 01/26/2023] Open
Abstract
Feeding is critical for survival, and disruption in the mechanisms that govern food intake underlies disorders such as obesity and anorexia nervosa. It is important to understand both food intake and food motivation to reveal mechanisms underlying feeding disorders. Operant behavioral testing can be used to measure the motivational component to feeding, but most food intake monitoring systems do not measure operant behavior. Here, we present a new solution for monitoring both food intake and motivation in rodent home-cages: the Feeding Experimentation Device version 3 (FED3). FED3 measures food intake and operant behavior in rodent home-cages, enabling longitudinal studies of feeding behavior with minimal experimenter intervention. It has a programmable output for synchronizing behavior with optogenetic stimulation or neural recordings. Finally, FED3 design files are open-source and freely available, allowing researchers to modify FED3 to suit their needs.
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Affiliation(s)
| | - Thomas Earnest
- Department of Psychiatry, Washington University in St. LouisSt. LouisUnited States
| | - Mohamed Ali
- National Institute of Diabetes and Digestive and Kidney DiseasesBethesdaUnited States,Department of Bioengineering, University of MarylandCollege ParkUnited States
| | - Eric Casey
- Department of Psychiatry, Washington University in St. LouisSt. LouisUnited States
| | - Justin G Wang
- Department of Neuroscience, Washington University in St. LouisSt. LouisUnited States
| | - Amy K Sutton
- National Institute of Diabetes and Digestive and Kidney DiseasesBethesdaUnited States
| | - Alex A Legaria
- Department of Neuroscience, Washington University in St. LouisSt. LouisUnited States
| | - Kia M Barclay
- Department of Neuroscience, Washington University in St. LouisSt. LouisUnited States
| | - Laura B Murdaugh
- Department of Neuroscience, Virginia Polytechnic and State UniversityBlacksburgUnited States
| | - Makenzie R Norris
- Department of Neuroscience, Washington University in St. LouisSt. LouisUnited States,Center for Clinical Pharmacology, University of Health Sciences and PharmacySt. LouisUnited States
| | - Yu-Hsuan Chang
- Department of Neuroscience, Washington University in St. LouisSt. LouisUnited States
| | - Katrina P Nguyen
- National Institute of Diabetes and Digestive and Kidney DiseasesBethesdaUnited States
| | - Eric Lin
- Department of Psychiatry, Washington University in St. LouisSt. LouisUnited States
| | | | | | - Romana Stark
- Department of Physiology, Monash UniversityClaytonAustralia
| | - Sineadh M Conway
- Center for Clinical Pharmacology, University of Health Sciences and PharmacySt. LouisUnited States,Department of Anesthesiology, Washington University in St. LouisSt. LouisUnited States
| | | | - Ream Al-Hasani
- Center for Clinical Pharmacology, University of Health Sciences and PharmacySt. LouisUnited States,Department of Anesthesiology, Washington University in St. LouisSt. LouisUnited States
| | - Jordan G McCall
- Center for Clinical Pharmacology, University of Health Sciences and PharmacySt. LouisUnited States,Department of Anesthesiology, Washington University in St. LouisSt. LouisUnited States
| | - Meaghan C Creed
- Department of Psychiatry, Washington University in St. LouisSt. LouisUnited States,Department of Neuroscience, Washington University in St. LouisSt. LouisUnited States,Department of Anesthesiology, Washington University in St. LouisSt. LouisUnited States
| | - Victor Cazares
- Department of Psychology, Williams CollegeWilliamstownUnited States
| | - Matthew W Buczynski
- Department of Neuroscience, Virginia Polytechnic and State UniversityBlacksburgUnited States
| | - Michael J Krashes
- National Institute of Diabetes and Digestive and Kidney DiseasesBethesdaUnited States
| | - Zane B Andrews
- Department of Physiology, Monash UniversityClaytonAustralia
| | - Alexxai V Kravitz
- Department of Psychiatry, Washington University in St. LouisSt. LouisUnited States,Department of Neuroscience, Washington University in St. LouisSt. LouisUnited States,Department of Anesthesiology, Washington University in St. LouisSt. LouisUnited States
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10
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Reichenbach A, Stark R, Mequinion M, Denis RRG, Goularte JF, Clarke RE, Lockie SH, Lemus MB, Kowalski GM, Bruce CR, Huang C, Schittenhelm RB, Mynatt RL, Oldfield BJ, Watt MJ, Luquet S, Andrews ZB. AgRP Neurons Require Carnitine Acetyltransferase to Regulate Metabolic Flexibility and Peripheral Nutrient Partitioning. Cell Rep 2019; 22:1745-1759. [PMID: 29444428 DOI: 10.1016/j.celrep.2018.01.067] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2017] [Revised: 11/13/2017] [Accepted: 01/22/2018] [Indexed: 01/29/2023] Open
Abstract
AgRP neurons control peripheral substrate utilization and nutrient partitioning during conditions of energy deficit and nutrient replenishment, although the molecular mechanism is unknown. We examined whether carnitine acetyltransferase (Crat) in AgRP neurons affects peripheral nutrient partitioning. Crat deletion in AgRP neurons reduced food intake and feeding behavior and increased glycerol supply to the liver during fasting, as a gluconeogenic substrate, which was mediated by changes to sympathetic output and peripheral fatty acid metabolism in the liver. Crat deletion in AgRP neurons increased peripheral fatty acid substrate utilization and attenuated the switch to glucose utilization after refeeding, indicating altered nutrient partitioning. Proteomic analysis in AgRP neurons shows that Crat regulates protein acetylation and metabolic processing. Collectively, our studies highlight that AgRP neurons require Crat to provide the metabolic flexibility to optimize nutrient partitioning and regulate peripheral substrate utilization, particularly during fasting and refeeding.
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Affiliation(s)
- Alex Reichenbach
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia; Department of Physiology, Monash University, Clayton 3800, VIC, Australia
| | - Romana Stark
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia; Department of Physiology, Monash University, Clayton 3800, VIC, Australia
| | - Mathieu Mequinion
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia; Department of Physiology, Monash University, Clayton 3800, VIC, Australia
| | - Raphael R G Denis
- Université of Paris Diderot, Sorbonne Paris Cité, Unité de Biologie Fonctionelle et Adaptative, CNRS UMR 8251, 75205 Paris, France
| | - Jeferson F Goularte
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia
| | - Rachel E Clarke
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia; Department of Physiology, Monash University, Clayton 3800, VIC, Australia
| | - Sarah H Lockie
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia; Department of Physiology, Monash University, Clayton 3800, VIC, Australia
| | - Moyra B Lemus
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia; Department of Physiology, Monash University, Clayton 3800, VIC, Australia
| | - Greg M Kowalski
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Burwood 3125, VIC, Australia
| | - Clinton R Bruce
- Institute for Physical Activity and Nutrition, School of Exercise and Nutrition Sciences, Deakin University, Burwood 3125, VIC, Australia
| | - Cheng Huang
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia; Monash Biomedical Proteomics Facility and Department of Biochemistry, Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia
| | - Ralf B Schittenhelm
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia; Monash Biomedical Proteomics Facility and Department of Biochemistry, Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia
| | - Randall L Mynatt
- Gene Nutrient Interactions Laboratory, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, USA; Transgenic Core Facility, Pennington Biomedical Research Center, Louisiana State University System, Baton Rouge, LA, USA
| | - Brian J Oldfield
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia; Department of Physiology, Monash University, Clayton 3800, VIC, Australia
| | - Matthew J Watt
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia; Department of Physiology, Monash University, Clayton 3800, VIC, Australia
| | - Serge Luquet
- Université of Paris Diderot, Sorbonne Paris Cité, Unité de Biologie Fonctionelle et Adaptative, CNRS UMR 8251, 75205 Paris, France
| | - Zane B Andrews
- Monash Biomedicine Discovery Institute, Monash University, Clayton 3800, VIC, Australia; Department of Physiology, Monash University, Clayton 3800, VIC, Australia.
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11
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Clarke RE, Verdejo-Garcia A, Andrews ZB. The role of corticostriatal-hypothalamic neural circuits in feeding behaviour: implications for obesity. J Neurochem 2018; 147:715-729. [PMID: 29704424 DOI: 10.1111/jnc.14455] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Revised: 04/11/2018] [Accepted: 04/13/2018] [Indexed: 02/02/2023]
Abstract
Emerging evidence from human imaging studies suggests that obese individuals have altered connectivity between the hypothalamus, the key brain region controlling energy homeostasis, and cortical regions involved in decision-making and reward processing. Historically, animal studies have demonstrated that the lateral hypothalamus is the key hypothalamic region involved in feeding and reward. The lateral hypothalamus is a heterogeneous structure comprised of several distinct types of neurons which are scattered throughout. In addition, the lateral hypothalamus receives inputs from a number of cortical brain regions suggesting that it is uniquely positioned to be a key integrator of cortical information and metabolic feedback. In this review, we summarize how human brain imaging can inform detailed animal studies to investigate neural pathways connecting cortical regions and the hypothalamus. Here, we discuss key cortical brain regions that are reciprocally connected to the lateral hypothalamus and are implicated in decision-making processes surrounding food.
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Affiliation(s)
- Rachel E Clarke
- Monash Biomedicine Discovery Institute, Monash University, Clayton, Vic., Australia.,Department of Physiology, Monash University, Clayton, Vic., Australia
| | - Antonio Verdejo-Garcia
- Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Clayton, Vic., Australia
| | - Zane B Andrews
- Monash Biomedicine Discovery Institute, Monash University, Clayton, Vic., Australia.,Department of Physiology, Monash University, Clayton, Vic., Australia
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12
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Snelson M, Clarke RE, Coughlan MT. Stirring the Pot: Can Dietary Modification Alleviate the Burden of CKD? Nutrients 2017; 9:nu9030265. [PMID: 28287463 PMCID: PMC5372928 DOI: 10.3390/nu9030265] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2017] [Revised: 02/27/2017] [Accepted: 03/06/2017] [Indexed: 02/06/2023] Open
Abstract
Diet is one of the largest modifiable risk factors for chronic kidney disease (CKD)-related death and disability. CKD is largely a progressive disease; however, it is increasingly appreciated that hallmarks of chronic kidney disease such as albuminuria can regress over time. The factors driving albuminuria resolution remain elusive. Since albuminuria is a strong risk factor for GFR loss, modifiable lifestyle factors that lead to an improvement in albuminuria would likely reduce the burden of CKD in high-risk individuals, such as patients with diabetes. Dietary therapy such as protein and sodium restriction has historically been used in the management of CKD. Evidence is emerging to indicate that other nutrients may influence kidney health, either through metabolic or haemodynamic pathways or via the modification of gut homeostasis. This review focuses on the role of diet in the pathogenesis and progression of CKD and discusses the latest findings related to the mechanisms of diet-induced kidney disease. It is possible that optimizing diet quality or restricting dietary intake could be harnessed as an adjunct therapy for CKD prevention or progression in susceptible individuals, thereby reducing the burden of CKD.
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Affiliation(s)
- Matthew Snelson
- Glycation, Nutrition and Metabolism Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia.
| | - Rachel E Clarke
- Glycation, Nutrition and Metabolism Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia.
- Department of Physiology, Monash University, Clayton 3800, Australia.
| | - Melinda T Coughlan
- Glycation, Nutrition and Metabolism Laboratory, Baker IDI Heart and Diabetes Institute, Melbourne 3004, Australia.
- Department of Diabetes, Central Clinical School, Monash University, Alfred Medical Research and Education Precinct, Melbourne 3004, Australia.
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13
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Davis CS, Clarke RE, Coulter SN, Rounsefell KN, Walker RE, Rauch CE, Huggins CE, Ryan L. Intermittent energy restriction and weight loss: a systematic review. Eur J Clin Nutr 2015; 70:292-9. [DOI: 10.1038/ejcn.2015.195] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 09/30/2015] [Accepted: 10/05/2015] [Indexed: 01/03/2023]
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14
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Clarke RE. Alternative and Complementary Veterinary Medicine: A Holistic View of Functional Medicine. Aust Vet J 2001. [DOI: 10.1111/j.1751-0813.2001.tb10899.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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15
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Schmidt SP, Meerbaum SO, Anderson JM, Clarke RE, Zellers RA, Sharp WV. Evaluation of expanded polytetrafluoroethylene arteriovenous access grafts onto which microvessel-derived cells were transplanted to "improve" graft performance: preliminary results. Ann Vasc Surg 1998; 12:405-11. [PMID: 9732416 DOI: 10.1007/s100169900176] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The purpose of this study was to implement and evaluate a clinical protocol for following longitudinally the luminal responses of microvessel cell seeded expanded polytetrafluoroethylene (ePTFE) vascular grafts implanted for hemodialysis access. Half of the patients enrolled in the study were randomized to receive grafts that were "seeded" with transplanted microvessel cells derived from autologous subcutaneous fat; the other half of the patients received nonseeded grafts. The patients agreed to scheduled biopsies of their grafts at three postoperative times. All biopsy samples were evaluated by routine histologic and electron microscopy techniques. Three men and six women were enrolled in the study. All operative procedures were tolerated well. However, only two of the nine patients agreed to 1-year postimplantation biopsies; one of these patients had been randomized to receive a "nonseeded" ePTFE graft and one randomized to receive a "seeded" graft. The "seeded" graft at 3 months showed endothelial cells on the luminal surface as well as some intimal thickening. By 20 months, the same "seeded" graft showed significant concentric intimal thickening and by 24 months, this "seeded" graft thrombosed. The "nonseeded" graft at 16 months had irregular areas of intimal thickening which were quite patchy in nature. The flow contacting surface of the "nonseeded" graft remained thin. The intima of the "seeded" graft was twice as thick as that of the "nonseeded" graft. The methodologies implemented in the study design were appropriate. Biopsy samples were obtained without complication and were easily processed for analysis. Patient compliance with the biopsy protocol was problematic however. The study was terminated because of the development of significant concentric intimal hyperplasia in a "seeded" graft.
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Affiliation(s)
- S P Schmidt
- Falor Center for Vascular Studies, Akron City Hospital, Ohio 44309, USA
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16
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Affiliation(s)
- P F Bennett
- Bundoora Veterinary Clinic and Hospital, Victoria
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17
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Luna E, Tomashefski JF, Brown D, Clarke RE, Kleinerman J. Reactive eosinophilic pulmonary vascular infiltration in patients with spontaneous pneumothorax. Am J Surg Pathol 1994; 18:195-9. [PMID: 8291658 DOI: 10.1097/00000478-199402000-00009] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Prominent nonnecrotizing eosinophilic inflammation of muscular pulmonary arteries was seen in resected lung tissue from two patients with spontaneous pneumothorax. Other histologic features included reactive eosinophilic pleuritis (REP) and fibrobullous disease. Eosinophilic vascular infiltration was not contiguous to REP. In neither patient was there a specific and recognized cause of eosinophilic vasculitis. Both patients are without pulmonary symptoms 1 and 4 years after pneumothorax. Eosinophilic vascular infiltration initially suggested the diagnosis of allergic angiitis or pulmonary eosinophilic granuloma. These diagnoses were excluded by clinical and morphologic data. We subsequently reviewed 30 cases of lung tissue resected from patients with pneumothorax and found REP in 18 patients (60%) and mild pulmonary vascular and perivascular eosinophilia in five patients (17%). REP was present in all cases with eosinophilic vascular infiltration. We conclude that this eosinophilic vascular lesion is an unusual reaction in patients with REP and pneumothorax. Occasionally this lesion mimics allergic angiitis or eosinophilic granuloma. The pathogenesis is probably related to vascular transport of eosinophils to the injured pleural surface.
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Affiliation(s)
- E Luna
- Department of Pathology, Case Western Reserve University School of Medicine, Cleveland, Ohio 44109
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18
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Affiliation(s)
- Y W Park
- Department of Otolaryngology, Northwestern Ohio Universities College of Medicine, Rootstown
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19
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20
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Bollinger DJ, Wick MR, Dehner LP, Mills SE, Swanson PE, Clarke RE. Peritoneal malignant mesothelioma versus serous papillary adenocarcinoma. A histochemical and immunohistochemical comparison. Am J Surg Pathol 1989; 13:659-70. [PMID: 2473660 DOI: 10.1097/00000478-198908000-00004] [Citation(s) in RCA: 98] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
In order to evaluate adjunctive histologic methods for separating mesothelioma (MM) and serous adenocarcinoma (SC), we studied 28 and 46 respective cases histochemically and immunohistochemically. Ten serous adenocarcinomas arose primarily in extraovarian sites within the abdomen. Diagnoses in each case were established retrospectively by a combination of electron microscopy and clinicopathologic correlation. A panel of antibodies to cytokeratin (CK), epithelial membrane antigen (EMA), B72.3, placental alkaline phosphatase (PLAP), S-100 protein, carcinoembryonic antigen (CEA), Leu M1, CA-125, and amylase (AM) was applied to paraffin sections of each case. Serous carcinoma was reactive for neutral mucins whereas mesothelioma was not; however, only 50% of adenocarcinoma cases stained in this manner. Peritoneal mesothelioma showed reactivity for CK (28 of 28 cases), EMA (24 of 28 cases), AM (five of 28 cases), CA-125 (four of 28 cases), and S-100 protein (three of 28 cases), but lacked B72.3, PLAP, and CEA. Three mesotheliomas expressed Leu M1, but in an extremely focal distribution. Serous carcinoma reacted for CK (46 of 46 cases), EMA (46 of 46 cases), CA-125 (42 of 46 cases), S-100 protein (40 of 46 cases), Leu M1 (34 of 46 cases; with diffuse staining), B72.3 (33 of 46 cases), PLAP (29 of 46 cases), AM (15 of 46 cases), and CEA (six of 46 cases). Two profiles (S-100 + B72.3; S-100 + PLAP) were seen in 41 of 46 serous adenocarcinoma cases but were absent in all mesotheliomas. Hence, these combinations of determinants are effective in separating such neoplasms diagnostically. Moreover, diffuse reactivity for Leu M1, B72.3, PLAP, or CEA in papillary peritoneal neoplasms appears to exclude the possibility of mesothelioma; however, focal Leu M1 reactivity may indeed be seen in mesothelioma. Although CA-125 is a sensitive marker for serous carcinoma, it is not effective in distinguishing it from mesothelioma.
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Affiliation(s)
- D J Bollinger
- Department of Laboratory Medicine, University of Minnesota School of Medicine, Minneapolis 55455
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21
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Clarke RE. The use of relative value studies in the determination of veterinary fees. Aust Vet J 1988; 65:345-9. [PMID: 3214368 DOI: 10.1111/j.1751-0813.1988.tb14261.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
This paper discusses the methods which veterinarians in Australia use to calculate their fees and charges. Problems associated with these methods and the tendency to undervalue the professional component of veterinary services are discussed. The paper introduces the concept of a relative value study of veterinary professional services within Australia and recommends the development of a relative value scale and conversion factors, based on appropriate resource cost accounting methodology, as a method to quantify veterinary professional service charges. A relative value scale is a table of "weights" that defines the relative value of procedures or services one to the other. A conversion factor is used to change the relative value unit to a dollar price and thus convert a relative value scale to a fee schedule. The Australian Veterinary Association is suggested as the most appropriate organisation to initiate and co-ordinate the research necessary for the development of these recommendations on a national basis.
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22
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Abstract
Periarteritis nodosa is a disease of small and medium-sized arteries, frequently associated with multiple visceral artery aneurysms. Infrequently, these aneurysms rupture, usually with fatal results. A case of spontaneous rupture of a middle colic artery aneurysm in a patient with periarteritis nodosa is reported, and similar cases in the literature are reviewed. Treatment of a ruptured visceral artery aneurysm requires ligation or resection of the aneurysm without delay. Residual aneurysms are treated with cyclophosphamide and/or prednisone in an attempt to induce regression of the aneurysms. An arteriogram performed after 3 to 4 months of medical therapy determines the need for further surgical intervention.
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23
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Hunter TJ, Schmidt SP, Sharp WV, Debski RF, Evancho MM, Clarke RE, Falkow LJ. Endothelial cell-seeded artificial prostheses for coronary bypass grafting. ASAIO Trans 1986; 32:339-41. [PMID: 3490861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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24
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Hunter TJ, Schmidt SP, Evancho MM, Falkow LJ, Sharp WV, Debski RF, Clarke RE. Endothelial cell seeding and coronary revascularization. Tex Heart Inst J 1985; 12:367-9. [PMID: 15226997 PMCID: PMC341892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/30/2023]
Affiliation(s)
- T J Hunter
- Department of Vascular Research, Akron City Hospital, Akron, Ohio, USA
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25
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Clayton AJ, O'Connell DC, Gaunt RA, Clarke RE. Study of the microbiological environment within long- and medium-range Canadian Forces aircraft. Aviat Space Environ Med 1976; 47:471-82. [PMID: 1275838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Because of a possible requirement to carry patients with highly virulent communicable diseases, a study was undertaken to observe smoke patterns within Canadian Forces transport aircraft. This was followed by the quantitative evaluation of the spread on non-pathogenic organisms disseminated within a Boeing 707 and a C13OE (Hercules). Thirdly, an attempt to recover respiratory tract viruses during transatlantic flights was made. Smoke patterns showed that an infected patient should be placed at the rear of the aircraft. The spread of the nonpathogenic organisms in a 707 indicated that contamination was largely confined to the rear, except when the aircraft was in an unpressurized mode. In the C13OE, contamination was shown to occur throughout the whole aircraft. No respiratory tract viruses were recovered during the transatlantic flights. It is essential that a 707 should be utilized for aeromedical evacuations. If a C13OE is being considered, then a portable self-contained isolation care unit is mandatory.
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26
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Clarke RE. Experimental and clinical cardiothoracic experience with tissue adhesive. Mo Med 1972; 69:365-71. [PMID: 5031903] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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27
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28
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Clarke RE. Book Review: A Manual of Dental and Oral Radiography. Proc R Soc Med 1963. [DOI: 10.1177/003591576305601240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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29
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