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Ly M, Yu GZ, Mian A, Cramer A, Meysami S, Merrill DA, Samara A, Eisenstein SA, Hershey T, Babulal GM, Lenze EJ, Morris JC, Benzinger TLS, Raji CA. Neuroinflammation: A Modifiable Pathway Linking Obesity, Alzheimer's disease, and Depression. Am J Geriatr Psychiatry 2023; 31:853-866. [PMID: 37365110 PMCID: PMC10528955 DOI: 10.1016/j.jagp.2023.06.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 05/31/2023] [Accepted: 06/01/2023] [Indexed: 06/28/2023]
Abstract
Obesity, depression and Alzheimer's disease (AD) are three major interrelated modern health conditions with complex relationships. Early-life depression may serve as a risk factor for AD, while late-life depression may be a prodrome of AD. Depression affects approximately 23% of obese individuals, and depression itself raises the risk of obesity by 37%. Mid-life obesity independently increases AD risk, while late-life obesity, particularly metabolically healthy obesity, may offer protection against AD pathology. Chronic inflammation serves as a key mechanism linking obesity, AD, and depression, encompassing systemic inflammation from metabolic disturbances, immune dysregulation through the gut microbiome, and direct interactions with amyloid pathology and neuroinflammation. In this review, we explore the biological mechanisms of neuroinflammation in relation to obesity, AD, and depression. We assess the efficacy of therapeutic interventions targeting neuroinflammation and discuss current and future radiological imaging initiatives for studying neuroinflammation. By comprehending the intricate interplay among depression, obesity, and AD, especially the role of neuroinflammation, we can advance our understanding and develop innovative strategies for prevention and treatment.
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Affiliation(s)
- Maria Ly
- Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, MO
| | - Gary Z Yu
- Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, MO
| | - Ali Mian
- Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, MO
| | | | - Somayeh Meysami
- Pacific Brain Health Center, Pacific Neuroscience Institute Foundation, Santa Monica, CA; Department of Translational Neurosciences, Saint John's Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA
| | - David A Merrill
- Pacific Brain Health Center, Pacific Neuroscience Institute Foundation, Santa Monica, CA; Department of Translational Neurosciences, Saint John's Cancer Institute at Providence Saint John's Health Center, Santa Monica, CA
| | - Amjad Samara
- Department of Neurology, Washington University in St. Louis, St. Louis, MO
| | - Sarah A Eisenstein
- Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, MO; Department of Psychiatry, Washington University in St. Louis, St. Louis, MO
| | - Tamara Hershey
- Department of Psychiatry, Washington University in St. Louis, St. Louis, MO; Department of Psychological & Brain Sciences, Washington University School of Medicine, St. Louis, MO
| | - Ganesh M Babulal
- Department of Neurology, Washington University in St. Louis, St. Louis, MO; Institute of Public Health, Washington University in St. Louis, St. Louis, MO; Department of Psychology, Faculty of Humanities, University of Johannesburg, Johannesburg, South Africa; Department of Clinical Research and Leadership, The George Washington University School of Medicine and Health Sciences, Washington, DC
| | - Eric J Lenze
- Department of Psychiatry, Washington University in St. Louis, St. Louis, MO
| | - John C Morris
- Department of Neurology, Washington University in St. Louis, St. Louis, MO
| | - Tammie L S Benzinger
- Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, MO; Department of Neurological Surgery, Washington University in St. Louis, St. Louis, MO
| | - Cyrus A Raji
- Mallinckrodt Institute of Radiology, Washington University in St. Louis, St. Louis, MO; Department of Neurology, Washington University in St. Louis, St. Louis, MO.
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Mogavero MP, Godos J, Grosso G, Caraci F, Ferri R. Rethinking the Role of Orexin in the Regulation of REM Sleep and Appetite. Nutrients 2023; 15:3679. [PMID: 37686711 PMCID: PMC10489991 DOI: 10.3390/nu15173679] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Revised: 08/12/2023] [Accepted: 08/21/2023] [Indexed: 09/10/2023] Open
Abstract
Orexin plays a significant role in the modulation of REM sleep, as well as in the regulation of appetite and feeding. This review explores, first, the current evidence on the role of orexin in the modulation of sleep and wakefulness and highlights that orexin should be considered essentially as a neurotransmitter inhibiting REM sleep and, to a much lesser extent, a wake promoting agent. Subsequently, the relationship between orexin, REM sleep, and appetite regulation is examined in detail, shedding light on their interconnected nature in both physiological conditions and diseases (such as narcolepsy, sleep-related eating disorder, idiopathic hypersomnia, and night eating syndrome). Understanding the intricate relationship between orexin, REM sleep, and appetite regulation is vital for unraveling the complex mechanisms underlying sleep-wake patterns and metabolic control. Further research in this field is encouraged in order to pave the way for novel therapeutic approaches to sleep disorders and metabolic conditions associated with orexin dysregulation.
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Affiliation(s)
- Maria P. Mogavero
- Department of Psychology, Vita-Salute San Raffaele University, 20132 Milan, Italy;
- San Raffaele Scientific Institute, Division of Neuroscience, Sleep Disorders Center, 20127 Milan, Italy
| | - Justyna Godos
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy; (J.G.); (G.G.)
| | - Giuseppe Grosso
- Department of Biomedical and Biotechnological Sciences, University of Catania, 95123 Catania, Italy; (J.G.); (G.G.)
| | - Filippo Caraci
- Neuropharmacology and Translational Neurosciences Research Unit, Oasi Research Institute—IRCCS, 94018 Troina, Italy;
- Department of Drug and Health Sciences, University of Catania, 95125 Catania, Italy
| | - Raffaele Ferri
- Sleep Research Centre, Oasi Research Institute—IRCCS, 94018 Troina, Italy
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Hwang IS, Hong SB. Association between body mass index and subcortical volume in pre-adolescent children with autism spectrum disorder: An exploratory study. Autism Res 2022; 15:2238-2249. [PMID: 36256577 DOI: 10.1002/aur.2834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2022] [Accepted: 10/03/2022] [Indexed: 12/15/2022]
Abstract
Conflicting associations exist between autism spectrum disorder (ASD) and subcortical brain volumes. This study assessed whether obesity might have a confounding influence on associations between ASD and brain subcortical volumes. A comprehensive investigation evaluating the relationship between ASD, obesity, and subcortical structure volumes was conducted. Data obtained included body mass index (BMI) and T1-weighted structural magnetic resonance images for children with and without ASD diagnoses from the Autism Brain Imaging Data Exchange database. Brain subcortical volumes were calculated using vol2Brain software. Hierarchical linear regression analyses were performed to explore the subcortical volumes similarly or differentially associated with BMI in children with or without ASD and examine association and interaction effects regarding ASD and subcortical volume impact on the Social Responsiveness Scale and Vineland Adaptive Behavior Scale (VABS) scores. Bilateral caudate nuclei were smaller in children with ASD than in control participants. Significant interactions were observed between ASD diagnosis and BMI regarding the left caudate, right and left putamen, and right and left ventral diencephalon (DC) volumes (β = -0.384, p = 0.010; β = -0.336, p = 0.030; β = -0.317, p = 0.040; β = 0.322, p = 0.010; β = 0.295, p = 0.021, respectively) and between ASD diagnosis and right and left ventral DC volumes regarding the VABS scores (β = 0.434, p = 0.014; β = 0.495, p = 0.007, respectively). However, each subcortical structure volume included in the ventral DC area could not be measured separately. The results identified subcortical volumes differentially associated with obesity in children with ASD compared with typically developing peers. BMI may need to be considered an important confounder in future research examining brain subcortical volumes within ASD.
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Affiliation(s)
- In-Seong Hwang
- Seoul National University College of Medicine, Seoul, Republic of Korea
| | - Soon-Beom Hong
- Seoul National University College of Medicine, Seoul, Republic of Korea.,Institute of Human Behavioral Medicine, Seoul National University Medical Research Center, Seoul, Republic of Korea
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Jewett DC, Liyanagamage DSNK, Avond MAV, Anderson MAB, Twaroski KA, Marek MA, James KF, Pal T, Klockars A, Olszewski PK, Levine AS. Chronic Intermittent Sucrose Consumption Facilitates the Ability to Discriminate Opioid Receptor Blockade with Naltrexone in Rats. Nutrients 2022; 14:nu14050926. [PMID: 35267900 PMCID: PMC8912831 DOI: 10.3390/nu14050926] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2022] [Revised: 02/15/2022] [Accepted: 02/18/2022] [Indexed: 12/20/2022] Open
Abstract
The opioid antagonist naltrexone (NTX) decreases intake of preferred diets in rats at very low doses relative to doses needed to decrease intake of "bland" laboratory chow. In the absence of an opioid agonist, NTX is not discriminable using operant techniques. In the current study, we found that rats given intermittent access to a 25% sucrose solution learned to discriminate between various naltrexone doses and saline. None of the rats given only water learned to discriminate between naltrexone and saline. When access to the sucrose solution was discontinued for 14 days, the rats lost the ability to discriminate between NTX and saline. We also studied the changes of c-Fos IR in selected brain regions in rats treated with saline versus NTX that were drinking water or 25% sucrose. An injection of NTX or saline resulted in a significant drug, diet, and interaction effect in various brain regions associated with feeding behavior, particularly the amygdala, accumbens, and hypothalamic sites. Thus, we found that ingestion of a sucrose solution results in the ability of rats to reliably discriminate naltrexone administration. In addition, sucrose and naltrexone altered c-Fos IR in an interactive fashion in brain regions known to be involved in ingestion behavior.
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Affiliation(s)
- David C. Jewett
- Department of Psychology, University of Wisconsin-Eau Claire, Eau Claire, WI 54701, USA; (D.C.J.); (M.A.V.A.); (M.A.B.A.); (K.A.T.); (M.A.M.); (K.F.J.)
| | - Donisha S. N. K. Liyanagamage
- Faculty of Science and Engineering, University of Waikato, Hamilton 3240, New Zealand; (D.S.N.K.L.); (T.P.); (A.K.); (P.K.O.)
| | - Mark A. Vanden Avond
- Department of Psychology, University of Wisconsin-Eau Claire, Eau Claire, WI 54701, USA; (D.C.J.); (M.A.V.A.); (M.A.B.A.); (K.A.T.); (M.A.M.); (K.F.J.)
| | - Molly A. B. Anderson
- Department of Psychology, University of Wisconsin-Eau Claire, Eau Claire, WI 54701, USA; (D.C.J.); (M.A.V.A.); (M.A.B.A.); (K.A.T.); (M.A.M.); (K.F.J.)
| | - Kyleigh A. Twaroski
- Department of Psychology, University of Wisconsin-Eau Claire, Eau Claire, WI 54701, USA; (D.C.J.); (M.A.V.A.); (M.A.B.A.); (K.A.T.); (M.A.M.); (K.F.J.)
| | - Morgan A. Marek
- Department of Psychology, University of Wisconsin-Eau Claire, Eau Claire, WI 54701, USA; (D.C.J.); (M.A.V.A.); (M.A.B.A.); (K.A.T.); (M.A.M.); (K.F.J.)
| | - Kimberly F. James
- Department of Psychology, University of Wisconsin-Eau Claire, Eau Claire, WI 54701, USA; (D.C.J.); (M.A.V.A.); (M.A.B.A.); (K.A.T.); (M.A.M.); (K.F.J.)
| | - Tapasya Pal
- Faculty of Science and Engineering, University of Waikato, Hamilton 3240, New Zealand; (D.S.N.K.L.); (T.P.); (A.K.); (P.K.O.)
| | - Anica Klockars
- Faculty of Science and Engineering, University of Waikato, Hamilton 3240, New Zealand; (D.S.N.K.L.); (T.P.); (A.K.); (P.K.O.)
| | - Pawel K. Olszewski
- Faculty of Science and Engineering, University of Waikato, Hamilton 3240, New Zealand; (D.S.N.K.L.); (T.P.); (A.K.); (P.K.O.)
- Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, MN 55414, USA
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN 55108, USA
| | - Allen S. Levine
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN 55108, USA
- Correspondence:
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Bosch E, Hebebrand M, Popp B, Penger T, Behring B, Cox H, Towner S, Kraus C, Wilson WG, Khan S, Krumbiegel M, Ekici AB, Uebe S, Trollmann R, Woelfle J, Reis A, Vasileiou G. BDV Syndrome: An Emerging Syndrome With Profound Obesity and Neurodevelopmental Delay Resembling Prader-Willi Syndrome. J Clin Endocrinol Metab 2021; 106:3413-3427. [PMID: 34383079 DOI: 10.1210/clinem/dgab592] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Indexed: 12/17/2022]
Abstract
CONTEXT CPE encodes carboxypeptidase E, an enzyme that converts proneuropeptides and propeptide hormones to bioactive forms. It is widely expressed in the endocrine and central nervous system. To date, 4 individuals from 2 families with core clinical features including morbid obesity, neurodevelopmental delay, and hypogonadotropic hypogonadism, harboring biallelic loss-of-function (LoF) CPE variants, have been reported. OBJECTIVE We describe 4 affected individuals from 3 unrelated consanguineous families, 2 siblings of Syrian, 1 of Egyptian, and 1 of Pakistani descent, all harboring novel homozygous CPE LoF variants. METHODS After excluding Prader-Willi syndrome (PWS), exome sequencing was performed in both Syrian siblings. The variants identified in the other 2 individuals were reported as research variants in a large-scale exome study and in the ClinVar database. Computational modeling of all possible missense alterations allowed assessing CPE tolerance to missense variants. RESULTS All affected individuals were severely obese with neurodevelopmental delay and other endocrine anomalies. Three individuals from 2 families shared the same CPE homozygous truncating variant c.361C > T, p.(Arg121*), while the fourth carried the c.994del, p.(Ser333Alafs*22) variant. Comparison of clinical features with previously described cases and standardization according to the Human Phenotype Ontology terms indicated a recognizable clinical phenotype, which we termed Blakemore-Durmaz-Vasileiou (BDV) syndrome. Computational analysis indicated high conservation of CPE domains and intolerance to missense changes. CONCLUSION Biallelic truncating CPE variants are associated with BDV syndrome, a clinically recognizable monogenic recessive syndrome with childhood-onset obesity, neurodevelopmental delay, hypogonadotropic hypogonadism, and hypothyroidism. BDV syndrome resembles PWS. Our findings suggest missense variants may also be clinically relevant.
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Affiliation(s)
- Elisabeth Bosch
- Institute of Human Genetics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Moritz Hebebrand
- Institute of Human Genetics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Bernt Popp
- Institute of Human Genetics, University of Leipzig Hospitals and Clinics, 04103 Leipzig, Germany
| | - Theresa Penger
- Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Bettina Behring
- Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Helen Cox
- West Midlands Regional Clinical Genetics Unit, Birmingham Women's Hospital, Edgbaston, Birmingham B15 2TG, UK
| | - Shelley Towner
- Department of Pediatrics, Division of Genetics, University of Virginia, Charlottesville, Virginia 22908, USA
| | - Cornelia Kraus
- Institute of Human Genetics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - William G Wilson
- Department of Pediatrics, Division of Genetics, University of Virginia, Charlottesville, Virginia 22908, USA
| | - Shagufta Khan
- West Midlands Regional Clinical Genetics Unit, Birmingham Women's Hospital, Edgbaston, Birmingham B15 2TG, UK
| | - Mandy Krumbiegel
- Institute of Human Genetics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Arif B Ekici
- Institute of Human Genetics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Steffen Uebe
- Institute of Human Genetics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Regina Trollmann
- Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, 91054 Erlangen, Germany
| | - Joachim Woelfle
- Department of Pediatrics and Adolescent Medicine, University Hospital Erlangen, 91054 Erlangen, Germany
| | - André Reis
- Institute of Human Genetics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
| | - Georgia Vasileiou
- Institute of Human Genetics, Universitätsklinikum Erlangen, Friedrich-Alexander-Universität Erlangen-Nürnberg (FAU), 91054 Erlangen, Germany
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The Controversial Role of Adiponectin in Appetite Regulation of Animals. Nutrients 2021; 13:nu13103387. [PMID: 34684387 PMCID: PMC8539471 DOI: 10.3390/nu13103387] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2021] [Revised: 09/05/2021] [Accepted: 09/23/2021] [Indexed: 12/20/2022] Open
Abstract
Eating disorders and obesity are important health problems with a widespread global epidemic. Adiponectin (AdipoQ), the most abundant adipokine in the plasma, plays important roles in the regulation of energy homeostasis, glucose metabolism and lipid metabolism. Plasma adiponectin concentration is negatively associated with obesity and binge eating disorder. There is a growing interest in the appetite regulation function of adiponectin. However, the effect of AdipoQ on feeding behavior is controversial and closely related to nutritional status and food composition. In this review, we summarize the literatures about the discovery, structure, tissue distribution, receptors and regulation of nutritional status, and focus on the biological function of adiponectin in the regulation of food intake in the central and peripheral system.
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Head MA, Levine AS, Christian DG, Klockars A, Olszewski PK. Effect of combination of peripheral oxytocin and naltrexone at subthreshold doses on food intake, body weight and feeding-related brain gene expression in male rats. Physiol Behav 2021; 238:113464. [PMID: 34022256 DOI: 10.1016/j.physbeh.2021.113464] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Revised: 05/17/2021] [Accepted: 05/18/2021] [Indexed: 01/17/2023]
Abstract
In a recent case report involving a male with hypothalamic obesity, concurrent administration of oxytocin (OT) and an opioid receptor antagonist, naltrexone (NTX), synergistically affected energy balance. Here, by using laboratory rats, we examined whether the reported synergy between OT and NTX in the context of food intake extends beyond that one unique case. We found that intravenous OT+NTX combination, at doses subthreshold for each of the drugs individually, decreased episodic consumption of a 10% sucrose solution in non-deprived animals. Daily administration of OT and NTX just before a scheduled, 2-hour, high-fat high-sugar (HFHS) meal over 24 days, decreased cumulative HFHS diet intake, but without a change in body weight due to compensatory standard chow intake during the remainder of the day. The NTX-OT treatment affected expression of several feeding-related genes in the hypothalamus, brain stem and nucleus accumbens, brain regions essential for the regulation of energy- and reward-driven consumption. We conclude that OT and NTX act synergistically to decrease food consumption in rats and that this transient effect is accompanied by changes in brain processes relevant to feeding.
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Affiliation(s)
- Mitchell A Head
- School of Science, Faculty of Science and Engineering, University of Waikato, Hamilton, New Zealand
| | - Allen S Levine
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN, 55113 United States.
| | - David G Christian
- School of Science, Faculty of Science and Engineering, University of Waikato, Hamilton, New Zealand
| | - Anica Klockars
- School of Science, Faculty of Science and Engineering, University of Waikato, Hamilton, New Zealand
| | - Pawel K Olszewski
- School of Science, Faculty of Science and Engineering, University of Waikato, Hamilton, New Zealand; Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN, 55113 United States; Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, MN, United States
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Estienne A, Ramé C, Ganier P, Chahnamian M, Barbe A, Grandhaye J, Dubois JP, Batailler M, Migaud M, Lecompte F, Adriaensen H, Froment P, Dupont J. Chemerin impairs food intake and body weight in chicken: Focus on hypothalamic neuropeptides gene expression and AMPK signaling pathway. Gen Comp Endocrinol 2021; 304:113721. [PMID: 33493505 DOI: 10.1016/j.ygcen.2021.113721] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 12/31/2020] [Accepted: 01/15/2021] [Indexed: 12/11/2022]
Abstract
Unlike mammals, the role of adipokines and more particularly of chemerin in the regulation of food intake is totally unknown in avian species. Here we investigated the effect of chemerin on the food and water consumption and on the body weight in chicken. We studied the effects on the plasma glucose and insulin concentrations and the hypothalamic neuropeptides and AMPK signaling pathway. Female broiler chickens were intraperitoneally injected, daily for 13 days with either vehicle (saline; n = 25) or chemerin (8 μg/kg; n = 25 and 16 μg/kg; n = 25). Food and water intakes were recorded 24 h after each administration. Overnight fasted animals were sacrificed at day 13 (D13), 24 h after the last injection and hypothalamus and left cerebral hemispheres were collected. Chemerin and its receptors protein levels were determined by western-blot. Gene expression of neuropeptide Y (Npy), agouti-related peptide (Agrp), corticotrophin releasing hormone (Crh), pro-opiomelanocortin (Pomc), cocaine and amphetamine-regulated transcript (Cart) and Taste 1 Receptor Member 1 (Tas1r1) were evaluated by RT-qPCR. In chicken, we found that the protein amount of chemerin, CCRL2 and GPR1 was similar in left cerebral hemisphere and hypothalamus whereas CMKLR1 was higher in hypothalamus. Chemerin administration (8 and 16 μg/kg) decreased both food intake and body weight compared to vehicle without affecting water intake and the size or volume of different brain subdivisions as determined by magnetic resonance imaging. It also increased plasma insulin levels whereas glucose levels were decreased. These data were associated with an increase in Npy and Agrp expressions and a decrease in Crh, Tas1r1 mRNA expression within the hypothalamus. Furthermore, chemerin decreased hypothalamic CMKLR1 protein expression and AMPK activation. Taken together, these results support that chemerin could be a peripheral appetite-regulating signal through modulation of hypothalamic peptides expression in chicken.
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Affiliation(s)
- Anthony Estienne
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France CNRS UMR7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France Université François Rabelais de Tours F-37041 Tours, France IFCE F-37380 Nouzilly, France
| | - Christelle Ramé
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France CNRS UMR7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France Université François Rabelais de Tours F-37041 Tours, France IFCE F-37380 Nouzilly, France
| | - Patrice Ganier
- INRAE - Unité Expérimentale du Pôle d'Expérimentation Avicole de Tours UEPEAT, 1295, Nouzilly, France
| | - Marine Chahnamian
- INRAE - Unité Expérimentale du Pôle d'Expérimentation Avicole de Tours UEPEAT, 1295, Nouzilly, France
| | - Alix Barbe
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France CNRS UMR7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France Université François Rabelais de Tours F-37041 Tours, France IFCE F-37380 Nouzilly, France
| | - Jérémy Grandhaye
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France CNRS UMR7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France Université François Rabelais de Tours F-37041 Tours, France IFCE F-37380 Nouzilly, France
| | - Jean-Philippe Dubois
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France CNRS UMR7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France Université François Rabelais de Tours F-37041 Tours, France IFCE F-37380 Nouzilly, France
| | - Martine Batailler
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France CNRS UMR7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France Université François Rabelais de Tours F-37041 Tours, France IFCE F-37380 Nouzilly, France
| | - Martine Migaud
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France CNRS UMR7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France Université François Rabelais de Tours F-37041 Tours, France IFCE F-37380 Nouzilly, France
| | - François Lecompte
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France CNRS UMR7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France Université François Rabelais de Tours F-37041 Tours, France IFCE F-37380 Nouzilly, France
| | - Hans Adriaensen
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France CNRS UMR7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France Université François Rabelais de Tours F-37041 Tours, France IFCE F-37380 Nouzilly, France
| | - Pascal Froment
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France CNRS UMR7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France Université François Rabelais de Tours F-37041 Tours, France IFCE F-37380 Nouzilly, France
| | - Joëlle Dupont
- INRAE UMR85 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France CNRS UMR7247 Physiologie de la Reproduction et des Comportements, F-37380 Nouzilly, France Université François Rabelais de Tours F-37041 Tours, France IFCE F-37380 Nouzilly, France.
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Klockars A, Levine AS, Head MA, Perez-Leighton CE, Kotz CM, Olszewski PK. Impact of Gut and Metabolic Hormones on Feeding Reward. Compr Physiol 2021; 11:1425-1447. [PMID: 33577129 DOI: 10.1002/cphy.c190042] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Ingestion of food activates a cascade of endocrine responses (thereby reflecting a contemporaneous feeding status) that include the release of hormones from the gastrointestinal (GI) tract, such as cholecystokinin (CCK), glucagonlike peptide YY (PYY), peptide PP, and oleoylethanolamide, as well as suppression of ghrelin secretion. The pancreas and adipose tissue, on the other hand, release hormones that serve as a measure of the current metabolic state or the long-term energy stores, that is, insulin, leptin, and adiponectin. It is well known and intuitively understandable that these hormones target either directly (by crossing the blood-brain barrier) or indirectly (e.g., via vagal input) the "homeostatic" brainstem-hypothalamic pathways involved in the regulation of appetite. The current article focuses on yet another target of the metabolic and GI hormones that is critical in inducing changes in food intake, namely, the reward system. We discuss the physiological basis of this functional interaction, its importance in the control of appetite, and the impact that disruption of this crosstalk has on energy intake in select physiological and pathophysiological states. We conclude that metabolic and GI hormones have a capacity to strengthen or weaken a response of the reward system to a given food, and thus, they are fundamental in ensuring that feeding reward is plastic and dependent on the energy status of the organism. © 2021 American Physiological Society. Compr Physiol 11:1425-1447, 2021.
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Affiliation(s)
- Anica Klockars
- Faculty of Science and Engineering, University of Waikato, Hamilton, New Zealand
| | - Allen S Levine
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, Minnesota, USA
| | - Mitchell A Head
- Faculty of Science and Engineering, University of Waikato, Hamilton, New Zealand
| | | | - Catherine M Kotz
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, Minnesota, USA.,Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, USA
| | - Pawel K Olszewski
- Faculty of Science and Engineering, University of Waikato, Hamilton, New Zealand.,Department of Food Science and Nutrition, University of Minnesota, St. Paul, Minnesota, USA.,Department of Integrative Biology and Physiology, Medical School, University of Minnesota, Minneapolis, Minnesota, USA
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10
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Willner MJ, Xiao Y, Kim HS, Chen X, Xu B, Leong KW. Modeling SARS-CoV-2 infection in individuals with opioid use disorder with brain organoids. J Tissue Eng 2021; 12:2041731420985299. [PMID: 33738089 PMCID: PMC7934045 DOI: 10.1177/2041731420985299] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Accepted: 12/13/2020] [Indexed: 01/10/2023] Open
Abstract
The COVID-19 pandemic has aggravated a preexisting epidemic: the opioid crisis. Much literature has shown that the circumstances imposed by COVID-19, such as social distancing regulations, medical and financial instability, and increased mental health issues, have been detrimental to those with opioid use disorder (OUD). In addition, unexpected neurological sequelae in COVID-19 patients suggest that COVID-19 compromises neuroimmunity, induces hypoxia, and causes respiratory depression, provoking similar effects as those caused by opioid exposure. Combined conditions of COVID-19 and OUD could lead to exacerbated complications. With limited human in vivo options to study these complications, we suggest that iPSC-derived brain organoid models may serve as a useful platform to investigate the physiological connection between COVID-19 and OUD. This mini-review highlights the advances of brain organoids in other neuropsychiatric and infectious diseases and suggests their potential utility for investigating OUD and COVID-19, respectively.
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Affiliation(s)
- Moshe J Willner
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Yang Xiao
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
| | - Hye Sung Kim
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
- Institute of Tissue Regeneration Engineering, Dankook University, Cheonan, Republic of Korea
- Department of Regenerative Dental Medicine, College of Dentistry, Dankook University, Cheonan, Republic of Korea
- Cell & Matter Institute, Dankook University, Cheonan, Republic of Korea
| | - Xuejing Chen
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
- Department of Physics, Tsinghua University, Beijing, China
| | - Bin Xu
- Department of Psychiatry, Columbia University Medical Center, New York, NY, USA
| | - Kam W Leong
- Department of Biomedical Engineering, Columbia University, New York, NY, USA
- Department of Systems Biology, Columbia University Irving Medical Center, New York, NY, USA
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11
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Przybyciński J, Dziedziejko V, Puchałowicz K, Domański L, Pawlik A. Adiponectin in Chronic Kidney Disease. Int J Mol Sci 2020; 21:ijms21249375. [PMID: 33317050 PMCID: PMC7764041 DOI: 10.3390/ijms21249375] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2020] [Revised: 12/01/2020] [Accepted: 12/07/2020] [Indexed: 12/14/2022] Open
Abstract
Adiponectin is the adipokine associated with insulin sensitization, reducing liver gluconeogenesis, and increasing fatty acid oxidation and glucose uptake. Adiponectin is present in the kidneys, mainly in the arterial endothelium and smooth muscle cells, as well as in the capillary endothelium, and might be considered as a marker of many negative factors in chronic kidney disease. The last few years have brought a rising body of evidence that adiponectin is a multipotential protein with anti-inflammatory, metabolic, anti-atherogenic, and reactive oxygen species (ROS) protective actions. Similarly, adiponectin has shown many positive and direct actions in kidney diseases, and among many kidney cells. Data from large cross-sectional and cohort studies showed a positive correlation between serum adiponectin and mortality in chronic kidney disease. This suggests a complex interaction between local adiponectin action, comorbidities, and uremic milieu. In this review we discuss the role of adiponectin in chronic kidney disease.
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Affiliation(s)
- Jarosław Przybyciński
- Department of Nephrology, Transplantology and Internal Medicine, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland; (J.P.); (L.D.)
| | - Violetta Dziedziejko
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland; (V.D.); (K.P.)
| | - Kamila Puchałowicz
- Department of Biochemistry and Medical Chemistry, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland; (V.D.); (K.P.)
| | - Leszek Domański
- Department of Nephrology, Transplantology and Internal Medicine, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland; (J.P.); (L.D.)
| | - Andrzej Pawlik
- Department of Physiology, Pomeranian Medical University in Szczecin, Powstańców Wlkp. 72, 70-111 Szczecin, Poland
- Correspondence: ; Tel.: +48-91-4661611
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12
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Neuropeptidomic Analysis of a Genetically Defined Cell Type in Mouse Brain and Pituitary. Cell Chem Biol 2020; 28:105-112.e4. [PMID: 33217339 DOI: 10.1016/j.chembiol.2020.11.003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 10/09/2020] [Accepted: 11/02/2020] [Indexed: 12/12/2022]
Abstract
Neuropeptides and peptide hormones are important cell-cell signaling molecules that mediate many physiological processes. Unlike classic neurotransmitters, peptides undergo cell-type-specific post-translational modifications that affect their biological activity. To enable the identification of the peptide repertoire of a genetically defined cell type, we generated mice with a conditional disruption of the gene for carboxypeptidase E (Cpe), an essential neuropeptide-processing enzyme. The loss of Cpe leads to accumulation of neuropeptide precursors containing C-terminal basic residues, which serve as tags for affinity purification. The purified peptides are subsequently identified using quantitative peptidomics, thereby revealing the specific forms of neuropeptides in cells with the disrupted Cpe gene. To validate the method, we used mice expressing Cre recombinase under the proopiomelanocortin (Pomc) promoter and analyzed hypothalamic and pituitary extracts, detecting peptides derived from proopiomelanocortin (as expected) and also proSAAS in POMC neurons. This technique enables the analyses of specific forms of peptides in any Cre-expressing cell type.
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13
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Maruska KP, Butler JM, Field KE, Forester C, Augustus A. Neural Activation Patterns Associated with Maternal Mouthbrooding and Energetic State in an African Cichlid Fish. Neuroscience 2020; 446:199-212. [PMID: 32707292 DOI: 10.1016/j.neuroscience.2020.07.025] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/18/2020] [Accepted: 07/14/2020] [Indexed: 10/23/2022]
Abstract
Parental care is widespread in the animal kingdom, but for many species, provisioning energetic resources must be balanced with trade-offs between self-promoting and offspring-promoting behaviors. However, little is known about the neural mechanisms underlying these motivational decisions. Mouthbrooding is an extreme form of parental care most common in fishes that provides an ideal opportunity to examine which brain regions are involved in parenting and energetics. The African cichlid fish Astatotilapia burtoni is a maternal mouthbrooder in which females hold developing young inside their mouths for 2 weeks. This brood care makes feeding impossible, so females undergo obligatory starvation. We used immunohistochemistry for the neural activation marker pS6 to examine which brain regions were involved in processing salient information in mouthbrooding, starved, and fed females. We identified brain regions more associated with maternal brood care (TPp, Dc-4/-5), and others reflective of energetic state (Dl-v, NLTi). Most nuclei examined, however, were involved in both maternal care and energetic status. Placement of each of the 16 examined nuclei into these functional categories was supported by node by node comparisons, co-activity networks, hierarchical clustering, and discriminant function analysis. These results reveal which brain regions are involved in parental care and food intake in a species where provisioning is skewed towards the offspring when parental feeding is not possible. This study provides support for both distinct and shared circuitry involved in regulation of maternal care, food intake, and energy balance, and helps put the extreme parental case of mouthbrooding into a comparative and evolutionary context.
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Affiliation(s)
- Karen P Maruska
- Department of Biological Sciences, 202 Life Sciences Bldg., Louisiana State University, Baton Rouge, LA 70803, United States.
| | - Julie M Butler
- Department of Biological Sciences, 202 Life Sciences Bldg., Louisiana State University, Baton Rouge, LA 70803, United States; Biology Department, Stanford University, 371 Jane Stanford Way, Stanford, CA 94305-5020, United States
| | - Karen E Field
- Department of Biological Sciences, 202 Life Sciences Bldg., Louisiana State University, Baton Rouge, LA 70803, United States
| | - Christopher Forester
- Department of Biological Sciences, 202 Life Sciences Bldg., Louisiana State University, Baton Rouge, LA 70803, United States
| | - Ashley Augustus
- Department of Biological Sciences, 202 Life Sciences Bldg., Louisiana State University, Baton Rouge, LA 70803, United States
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14
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Chen WC, Liu YB, Liu WF, Zhou YY, He HF, Lin S. Neuropeptide Y Is an Immunomodulatory Factor: Direct and Indirect. Front Immunol 2020; 11:580378. [PMID: 33123166 PMCID: PMC7573154 DOI: 10.3389/fimmu.2020.580378] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2020] [Accepted: 09/18/2020] [Indexed: 12/12/2022] Open
Abstract
Neuropeptide Y (NPY), which is widely distributed in the nervous system, is involved in regulating a variety of biological processes, including food intake, energy metabolism, and emotional expression. However, emerging evidence points to NPY also as a critical transmitter between the nervous system and immune system, as well as a mediator produced and released by immune cells. In vivo and in vitro studies based on gene-editing techniques and specific NPY receptor agonists and antagonists have demonstrated that NPY is responsible for multifarious direct modulations on immune cells by acting on NPY receptors. Moreover, via the central or peripheral nervous system, NPY is closely connected to body temperature regulation, obesity development, glucose metabolism, and emotional expression, which are all immunomodulatory factors for the immune system. In this review, we focus on the direct role of NPY in immune cells and particularly discuss its indirect impact on the immune response.
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Affiliation(s)
- Wei-Can Chen
- Department of Anesthesiology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China
| | - Yi-Bin Liu
- Department of Anesthesiology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China
| | - Wei-Feng Liu
- Department of Anesthesiology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China
| | - Ying-Ying Zhou
- Department of Anesthesiology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China
| | - He-Fan He
- Department of Anesthesiology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China
| | - Shu Lin
- Department of Anesthesiology, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China.,Centre of Neurological and Metabolic Research, The Second Affiliated Hospital, Fujian Medical University, Quanzhou, China.,Diabetes and Metabolism Division, Garvan Institute of Medical Research, Sydney, NSW, Australia
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15
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Han Y, Yuan K, Zheng Y, Lu L. Orexin Receptor Antagonists as Emerging Treatments for Psychiatric Disorders. Neurosci Bull 2020; 36:432-448. [PMID: 31782044 PMCID: PMC7142186 DOI: 10.1007/s12264-019-00447-9] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 09/27/2019] [Indexed: 12/12/2022] Open
Abstract
Orexins comprise two neuropeptides produced by orexin neurons in the lateral hypothalamus and are released by extensive projections of these neurons throughout the central nervous system. Orexins bind and activate their associated G protein-coupled orexin type 1 receptors (OX1Rs) and OX2Rs and act on numerous physiological processes, such as sleep-wake regulation, feeding, reward, emotion, and motivation. Research on the development of orexin receptor antagonists has dramatically increased with the approval of suvorexant for the treatment of primary insomnia. In the present review, we discuss recent findings on the involvement of the orexin system in the pathophysiology of psychiatric disorders, including sleep disorders, depression, anxiety, and drug addiction. We discuss the actions of orexin receptor antagonists, including selective OX1R antagonists (SORA1s), selective OX2R antagonists (SORA2s), and dual OX1/2R antagonists (DORAs), in the treatment of these disorders based on both preclinical and clinical evidence. SORA2s and DORAs have more pronounced efficacy in the treatment of sleep disorders, whereas SORA1s may be promising for the treatment of anxiety and drug addiction. We also discuss potential challenges and opportunities for the application of orexin receptor antagonists to clinical interventions.
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Affiliation(s)
- Ying Han
- National Institute of Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China
| | - Kai Yuan
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, 100191, China
- Peking-Tsinghua Center for Life Sciences and PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, 100871, China
| | - Yongbo Zheng
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, 100191, China
| | - Lin Lu
- National Institute of Drug Dependence and Beijing Key Laboratory of Drug Dependence, Peking University, Beijing, 100191, China.
- Peking University Sixth Hospital, Peking University Institute of Mental Health, NHC Key Laboratory of Mental Health (Peking University), National Clinical Research Center for Mental Disorders (Peking University Sixth Hospital), Beijing, 100191, China.
- Peking-Tsinghua Center for Life Sciences and PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, 100871, China.
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16
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Abstract
In all vertebrates, the thyroid axis is an endocrine feedback system that affects growth, differentiation, and reproduction, by sensing and translating central and peripheral signals to maintain homeostasis and a proper thyroidal set-point. Fish, the most diverse group of vertebrates, rely on this system for somatic growth, metamorphosis, reproductive events, and the ability to tolerate changing environments. The vast majority of the research on the thyroid axis pertains to mammals, in particular rodents, and although some progress has been made to understand the role of this endocrine axis in non-mammalian vertebrates, including amphibians and teleost fish, major gaps in our knowledge remain regarding other groups, such as elasmobranchs and cyclostomes. In this review, we discuss the roles of the thyroid axis in fish and its contributions to growth and development, metamorphosis, reproduction, osmoregulation, as well as feeding and nutrient metabolism. We also discuss how thyroid hormones have been/can be used in aquaculture, and potential threats to the thyroid system in this regard.
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17
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Volkoff H. Fish as models for understanding the vertebrate endocrine regulation of feeding and weight. Mol Cell Endocrinol 2019; 497:110437. [PMID: 31054868 DOI: 10.1016/j.mce.2019.04.017] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 04/17/2019] [Accepted: 04/24/2019] [Indexed: 12/17/2022]
Abstract
The frequencies of eating disorders and obesity have increased worldwide in recent years. Their pathophysiologies are still unclear, but recent evidence suggests that they might be related to changes in endocrine and neural factors that regulate feeding and energy homeostasis. In order to develop efficient therapeutic drugs, a more thorough knowledge of the neuronal circuits and mechanisms involved is needed. Although to date, rodents have mostly been used models in the area of neuroscience and neuroendocrinology, an increasing number of studies use non-mammalian vertebrates, in particular fish, as model systems. Fish present several advantages over mammalian models and they share genetic and physiological homology to mammals with close similarities in the mechanisms involved in the neural and endocrine regulation of appetite. This review briefly describes the regulation of feeding in two model species, goldfish and zebrafish, how this regulation compares to that in mammals, and how these fish could be used for studies on endocrine regulation of eating and weight and its dysregulations.
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Affiliation(s)
- Helene Volkoff
- Departments of Biology and Biochemistry, Memorial University of Newfoundland, St. John's, NL, A1B 3X9, Canada.
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18
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Tian M, Heng J, Song H, Shi K, Lin X, Chen F, Guan W, Zhang S. Dietary Branched-Chain Amino Acids Regulate Food Intake Partly through Intestinal and Hypothalamic Amino Acid Receptors in Piglets. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:6809-6818. [PMID: 31134808 DOI: 10.1021/acs.jafc.9b02381] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Strategies to increase feed intake are of great importance for producing more meat in swine production. Intestinal and hypothalamic amino acid receptors are found to largely participate in feed intake regulation. The purpose of the current research is to study the function of branched-chain amino acid (BCAA) supplementation in the regulation of feed intake through sensors that can detect amino acids in piglets. Twenty-four piglets were assigned one of four treatments and fed one of the experimental diets for either a short period (Expt. 1) or a long period (Expt. 2): a normal protein diet (NP, 20.04% CP), a reduced-protein diet (RP, 17.05% CP), or a reduced-protein test diet supplemented with one of two doses of BCAAs (BCAA1, supplemented with 0.13% l-isoleucine, 0.09% l-leucine, and 0.23% l-valine; BCAA2, supplemented with the 150% standardized ileal digestibility BCAA requirement, as recommended by the National Research Council (2012)). In Expt. 1, no differences were observed in the feed intake among piglets fed different diets ( P > 0.05). In Expt. 2, compared with the RP group, the feed intake of piglets was significantly increased after sufficient BCAAs were supplemented in the BCAA1 group, which was associated with decreased cholecystokinin secretion ( P < 0.05), down-regulated expression of type-1 taste receptors 1/3 (T1R1/T1R3) in the intestine, as well as increased expression of pro-opiomelanocortin, activated general control nonderepressible 2 (GCN2), and eukaryotic initiation factor 2α (eIF2α) in the hypothalamus ( P < 0.05). However, the feed intake was decreased for unknown reasons when the piglets were fed a BCAA over-supplemented diet. Our study confirmed that a BCAA-deficient diet inhibited feed intake through two potential ways: regulating the amino acid T1R1/T1R3 receptor in the intestine or activating GCN2/eIF2α pathways in the hypothalamus.
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Affiliation(s)
- Min Tian
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science , South China Agricultural University , Guangzhou , 510642 , China
| | - Jinghui Heng
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science , South China Agricultural University , Guangzhou , 510642 , China
| | - Hanqing Song
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science , South China Agricultural University , Guangzhou , 510642 , China
| | - Kui Shi
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science , South China Agricultural University , Guangzhou , 510642 , China
| | - Xiaofeng Lin
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science , South China Agricultural University , Guangzhou , 510642 , China
| | - Fang Chen
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science , South China Agricultural University , Guangzhou , 510642 , China
| | - Wutai Guan
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science , South China Agricultural University , Guangzhou , 510642 , China
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry , South China Agricultural University , Guangzhou 510642 , China
| | - Shihai Zhang
- Guangdong Province Key Laboratory of Animal Nutrition Control, College of Animal Science , South China Agricultural University , Guangzhou , 510642 , China
- College of Animal Science and National Engineering Research Center for Breeding Swine Industry , South China Agricultural University , Guangzhou 510642 , China
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19
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Adamski Z, Bufo SA, Chowański S, Falabella P, Lubawy J, Marciniak P, Pacholska-Bogalska J, Salvia R, Scrano L, Słocińska M, Spochacz M, Szymczak M, Urbański A, Walkowiak-Nowicka K, Rosiński G. Beetles as Model Organisms in Physiological, Biomedical and Environmental Studies - A Review. Front Physiol 2019; 10:319. [PMID: 30984018 PMCID: PMC6447812 DOI: 10.3389/fphys.2019.00319] [Citation(s) in RCA: 51] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 03/11/2019] [Indexed: 12/13/2022] Open
Abstract
Model organisms are often used in biological, medical and environmental research. Among insects, Drosophila melanogaster, Galleria mellonella, Apis mellifera, Bombyx mori, Periplaneta americana, and Locusta migratoria are often used. However, new model organisms still appear. In recent years, an increasing number of insect species has been suggested as model organisms in life sciences research due to their worldwide distribution and environmental significance, the possibility of extrapolating research studies to vertebrates and the relatively low cost of rearing. Beetles are the largest insect order, with their representative - Tribolium castaneum - being the first species with a completely sequenced genome, and seem to be emerging as new potential candidates for model organisms in various studies. Apart from T. castaneum, additional species representing various Coleoptera families, such as Nicrophorus vespilloides, Leptinotarsa decemlineata, Coccinella septempunctata, Poecilus cupreus, Tenebrio molitor and many others, have been used. They are increasingly often included in two major research aspects: biomedical and environmental studies. Biomedical studies focus mainly on unraveling mechanisms of basic life processes, such as feeding, neurotransmission or activity of the immune system, as well as on elucidating the mechanism of different diseases (neurodegenerative, cardiovascular, metabolic, or immunological) using beetles as models. Furthermore, pharmacological bioassays for testing novel biologically active substances in beetles have also been developed. It should be emphasized that beetles are a source of compounds with potential antimicrobial and anticancer activity. Environmental-based studies focus mainly on the development and testing of new potential pesticides of both chemical and natural origin. Additionally, beetles are used as food or for their valuable supplements. Different beetle families are also used as bioindicators. Another important research area using beetles as models is behavioral ecology studies, for instance, parental care. In this paper, we review the current knowledge regarding beetles as model organisms and their practical application in various fields of life science.
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Affiliation(s)
- Zbigniew Adamski
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
- Laboratory of Electron and Confocal Microscopy, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Sabino A. Bufo
- Department of Sciences, University of Basilicata, Potenza, Italy
- Department of Geography, Environmental Management & Energy Studies, University of Johannesburg, Johannesburg, South Africa
| | - Szymon Chowański
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | | | - Jan Lubawy
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Paweł Marciniak
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Joanna Pacholska-Bogalska
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Rosanna Salvia
- Department of Sciences, University of Basilicata, Potenza, Italy
| | - Laura Scrano
- Department of European and Mediterranean Cultures, University of Basilicata, Matera, Italy
| | - Małgorzata Słocińska
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Marta Spochacz
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Monika Szymczak
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Arkadiusz Urbański
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Karolina Walkowiak-Nowicka
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
| | - Grzegorz Rosiński
- Department of Animal Physiology and Development, Institute of Experimental Biology, Faculty of Biology, Adam Mickiewicz University in Poznań, Poznań, Poland
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20
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Klockars A, Wood EL, Gartner SN, McColl LK, Levine AS, Carpenter EA, Prosser CG, Olszewski PK. Palatability of Goat's versus Cow's Milk: Insights from the Analysis of Eating Behavior and Gene Expression in the Appetite-Relevant Brain Circuit in Laboratory Animal Models. Nutrients 2019; 11:nu11040720. [PMID: 30925727 PMCID: PMC6520687 DOI: 10.3390/nu11040720] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 03/17/2019] [Accepted: 03/25/2019] [Indexed: 01/20/2023] Open
Abstract
Goat's (GM) and cow's milk (CM) are dietary alternatives with select health benefits shown in human and animal studies. Surprisingly, no systematic analysis of palatability or preference for GM vs. CM has been performed to date. Here, we present a comprehensive investigation of short-term intake and palatability profiles of GM and CM in laboratory mice and rats. We studied consumption in no-choice and choice scenarios, including meal microstructure, and by using isocaloric milks and milk-enriched solid diets. Feeding results are accompanied by qPCR data of relevant genes in the energy balance-related hypothalamus and brain stem, and in the nucleus accumbens, which regulates eating for palatability. We found that GM and CM are palatable to juvenile, adult, and aged rodents. Given a choice, animals prefer GM- to CM-based diets. Analysis of meal microstructure using licking patterns points to enhanced palatability of and, possibly, greater motivation toward GM over CM. Most profound changes in gene expression after GM vs. CM were associated with the brain systems driving consumption for reward. We conclude that, while both GM and CM are palatable, GM is preferred over CM by laboratory animals, and this preference is driven by central mechanisms controlling eating for pleasure.
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Affiliation(s)
- Anica Klockars
- Faculty of Science and Engineering, University of Waikato, Hamilton 3240, New Zealand.
| | - Erin L Wood
- Faculty of Science and Engineering, University of Waikato, Hamilton 3240, New Zealand.
| | - Sarah N Gartner
- Faculty of Science and Engineering, University of Waikato, Hamilton 3240, New Zealand.
| | - Laura K McColl
- Faculty of Science and Engineering, University of Waikato, Hamilton 3240, New Zealand.
| | - Allen S Levine
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN 55113, USA.
| | | | - Colin G Prosser
- Dairy Goat Cooperative (NZ) Ltd., Hamilton 3206, New Zealand.
| | - Pawel K Olszewski
- Faculty of Science and Engineering, University of Waikato, Hamilton 3240, New Zealand.
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN 55113, USA.
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21
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De Luca SN, Sominsky L, Soch A, Wang H, Ziko I, Rank MM, Spencer SJ. Conditional microglial depletion in rats leads to reversible anorexia and weight loss by disrupting gustatory circuitry. Brain Behav Immun 2019; 77:77-91. [PMID: 30578932 DOI: 10.1016/j.bbi.2018.12.008] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Revised: 12/04/2018] [Accepted: 12/12/2018] [Indexed: 01/12/2023] Open
Abstract
Microglia are highly sensitive to dietary influence, becoming activated acutely and long-term by high fat diet. However, their role in regulating satiety and feeding in healthy individuals remains unclear. Here we show that microglia are essential for the normal regulation of satiety and metabolism in rats. Short-term microglial depletion in a Cx3cr1-Dtr rat led to a dramatic weight loss that was largely accounted for by an acute reduction in food intake. This weight loss and anorexia were not likely due to a sickness response since the rats did not display peripheral or central inflammation, withdrawal, anxiety-like behavior, or nausea-associated pica. Hormonal and hypothalamic anatomical changes were largely compensatory to the suppressed food intake, which occurred in association with disruption of the gustatory circuitry at the paraventricular nucleus of the thalamus. Thus, microglia are important in supporting normal feeding behaviors and weight, and regulating preference for palatable food. Inhibiting this circuitry is able to over-ride strong compensatory drives to eat, providing a potential target for satiety control.
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Affiliation(s)
- Simone N De Luca
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Luba Sominsky
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Alita Soch
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Hao Wang
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Ilvana Ziko
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Michelle M Rank
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia
| | - Sarah J Spencer
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3138, Australia.
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Li H, Liu Y, Liu C, Luo L, Yao Y, Li F, Yin L, Xu L, Tong Q, Huang C, Fan S. Notoginsenoside Fe suppresses diet induced obesity and activates paraventricular hypothalamic neurons. RSC Adv 2019; 9:1290-1298. [PMID: 35518019 PMCID: PMC9059641 DOI: 10.1039/c8ra07842d] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 12/24/2018] [Indexed: 01/13/2023] Open
Abstract
Obesity has become a major public health challenge worldwide. Energy imbalance between calorie acquisition and consumption is the fundamental cause of obesity. Notoginsenoside Fe is a naturally occurring compound in Panax notoginseng, a herb used in the treatment of cardiovascular diseases in traditional Chinese medicine. Here, we evaluated the effect of notoginsenoside Fe on obesity development induced by high-fat diet in C57BL/6 mice. Our results demonstrated that notoginsenoside Fe decreased food intake and body weight, as well as protected liver structure integrity and normal function. Metabolic cage analysis showed that notoginsenoside Fe also promoted resting metabolic rate. In addition, intracerebroventricular (i.c.v) injection of notoginsenoside Fe induced C-Fos expression in the paraventricular nucleus (PVH) but not the arcuate nucleus (ARC) of the hypothalamus. These results suggest that Fe may reduce body weight through the activation of energy-sensing neurons in the hypothalamus. Notoginsenoside Fe, a naturally occurring compound in Panax notoginseng, significantly reduces body weight, promotes metabolic rate, and suppresses food intake through activating C-Fos expression in PVH in high-fat diet induced obese mice.![]()
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23
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Gupta S, Gautam M, Prasoon P, Kumar R, Ray SB, Kaler Jhajhria S. Involvement of Neuropeptide Y in Post-Incisional Nociception in Rats. Ann Neurosci 2018; 25:268-276. [PMID: 31000967 PMCID: PMC6470383 DOI: 10.1159/000495130] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2018] [Accepted: 10/30/2018] [Indexed: 01/17/2023] Open
Abstract
BACKGROUND Neuropeptide Y (NPY) is abundantly distributed in the mammalian nervous system. Its role in nociception arising from inflammatory and neuropathic pain conditions has been elucidated. However, its involvement in post-incisional nociception, particularly at the spinal cord level, is relatively unknown. PURPOSE Management of postoperative pain is suboptimal. Evaluation of changes at the spinal level could facilitate better understanding of neural mechanisms underlying this type of pain. METHODS Rats were subjected to hind paw incision and spatiotemporal pattern of NPY expression in the dorsal horn was investigated by immunohistochemistry. Next, rats were implanted with intrathecal catheters using previously standardized procedure. NPY was injected into the intrathecal space by an indwelling catheter and behavioral assessment of nociception was performed. RESULTS Higher expression of NPY was observed in the superficial laminae of the dorsal horn. After incision, specific changes were observed like an abrupt decrease at 3 h after incision, which could be correlated with the intense nociception at this time. In contrast to morphine administration, which attenuated all 3 behavioral parameters of nociception, NPY decreased guarding behavior and thermal hyperalgesia during the acute phase. CONCLUSIONS NPY is extensively expressed in the superficial laminae of the spinal cord and exhibit marked changes after incision. Nociception is also decreased after its administration. Hence, it is likely involved in post-incisional nociception. This information could have clinical relevance.
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Affiliation(s)
| | | | | | | | | | - Saroj Kaler Jhajhria
- Departments of Anatomy, All India Institute of Medical Sciences, New Delhi, India
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