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Barrientos RM, Brunton PJ, Lenz KM, Pyter L, Spencer SJ. Neuroimmunology of the female brain across the lifespan: Plasticity to psychopathology. Brain Behav Immun 2019; 79:39-55. [PMID: 30872093 PMCID: PMC6591071 DOI: 10.1016/j.bbi.2019.03.010] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 02/25/2019] [Accepted: 03/09/2019] [Indexed: 02/06/2023] Open
Abstract
The female brain is highly dynamic and can fundamentally remodel throughout the normal ovarian cycle as well as in critical life stages including perinatal development, pregnancy and old-age. As such, females are particularly vulnerable to infections, psychological disorders, certain cancers, and cognitive impairments. We will present the latest evidence on the female brain; how it develops through the neonatal period; how it changes through the ovarian cycle in normal individuals; how it adapts to pregnancy and postpartum; how it responds to illness and disease, particularly cancer; and, finally, how it is shaped by old age. Throughout, we will highlight female vulnerability to and resilience against disease and dysfunction in the face of environmental challenges.
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Affiliation(s)
- R M Barrientos
- Institute for Behavioral Medicine Research, Wexner Medical Centre, The Ohio State University, Columbus, OH 43210, United States; Department of Psychiatry and Behavioral Health, Wexner Medical Centre, The Ohio State University, Columbus, OH 43210, United States; Chronic Brain Injury Program, Discovery Themes Initiative, The Ohio State University, Columbus, OH 43210, United States
| | - P J Brunton
- Centre for Discovery Brain Sciences, University of Edinburgh, Hugh Robson Building, George Square, Edinburgh EH8 9XD, Scotland, UK; Zhejiang University-University of Edinburgh Joint Institute, Zhejiang University School of Medicine, International Campus, Haining, Zhejiang 314400, PR China
| | - K M Lenz
- Institute for Behavioral Medicine Research, Wexner Medical Centre, The Ohio State University, Columbus, OH 43210, United States; Department of Psychology, Department of Neuroscience, The Ohio State University, Columbus, OH 43210, United States
| | - L Pyter
- Institute for Behavioral Medicine Research, Wexner Medical Centre, The Ohio State University, Columbus, OH 43210, United States; Department of Psychiatry and Behavioral Health, Wexner Medical Centre, The Ohio State University, Columbus, OH 43210, United States
| | - S J Spencer
- School of Health and Biomedical Sciences, RMIT University, Melbourne, Vic. 3083, Australia.
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Asarian L, Bächler T. Neuroendocrine control of satiation. Horm Mol Biol Clin Investig 2015; 19:163-92. [PMID: 25390024 DOI: 10.1515/hmbci-2014-0010] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2014] [Accepted: 03/17/2014] [Indexed: 01/13/2023]
Abstract
Abstract Eating is a simple behavior with complex functions. The unconscious neuroendocrine process that stops eating and brings a meal to its end is called satiation. Energy homeostasis is mediated accomplished through the control of meal size via satiation. It involves neural integrations of phasic negative-feedback signals related to ingested food and tonic signals, such as those related to adipose tissue mass. Energy homeostasis is accomplished through adjustments in meal size brought about by changes in these satiation signals. The best understood meal-derived satiation signals arise from gastrointestinal nutrient sensing. Gastrointestinal hormones secreted during the meal, including cholecystokinin, glucagon-like peptide 1, and PYY, mediate most of these. Other physiological signals arise from activation of metabolic-sensing neurons, mainly in the hypothalamus and caudal brainstem. We review both classes of satiation signal and their integration in the brain, including their processing by melanocortin, neuropeptide Y/agouti-related peptide, serotonin, noradrenaline, and oxytocin neurons. Our review is not comprehensive; rather, we discuss only what we consider the best-understood mechanisms of satiation, with a special focus on normally operating physiological mechanisms.
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Couch ME, Dittus K, Toth MJ, Willis MS, Guttridge DC, George JR, Chang EY, Gourin CG, Der-Torossian H. Cancer cachexia update in head and neck cancer: Pathophysiology and treatment. Head Neck 2015; 37:1057-72. [PMID: 24634283 DOI: 10.1002/hed.23696] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/11/2014] [Indexed: 01/10/2023] Open
Abstract
The pathophysiology of cancer cachexia remains complex. A comprehensive literature search was performed up to April 2013 using PubMed, the Cochrane Library, Cumulative Index to Nursing and Allied Health Literature, and the Google search engine. In this review, we focus on the different mediators of impaired anabolism and upregulated catabolism that alter the skeletal muscle homeostasis resulting in the wasting of cancer cachexia. We present recent evidence of targeted treatment modalities from clinical trials along with their potential mechanisms of action. We also report on the most current evidence from randomized clinical trials using multimodal treatments in patients with cancer cachexia, but also the evidence from head and neck cancer-specific trials. A more complete understanding of the pathophysiology of the syndrome may lead to more effective targeted therapies and improved outcomes for patients.
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Affiliation(s)
- Marion E Couch
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, Vermont Cancer Center, University of Vermont, College of Medicine, Burlington, Vermont
| | - Kim Dittus
- Division of Hematology-Oncology, Department of Medicine, Vermont Cancer Center, University of Vermont, College of Medicine, Burlington, Vermont
| | - Michael J Toth
- Department of Molecular Physiology and Biophysics, University of Vermont, College of Medicine, Burlington, Vermont
| | - Monte S Willis
- Department of Pathology and Laboratory Medicine, McAllister Heart Institute, University of North Carolina, Chapel Hill, North Carolina
| | - Denis C Guttridge
- Department of Molecular Virology, Immunology, and Medical Genetics, Ohio State University, Columbus, Ohio
| | - Jonathan R George
- Department of Otolaryngology - Head and Neck Surgery, University of California, San Francisco, California
| | - Eric Y Chang
- University of Vermont, College of Medicine, Burlington, Vermont
| | - Christine G Gourin
- Department of Otolaryngology - Head and Neck Surgery, Johns Hopkins Hospital, Baltimore, Maryland
| | - Hirak Der-Torossian
- Division of Otolaryngology-Head and Neck Surgery, Department of Surgery, Vermont Cancer Center, University of Vermont, College of Medicine, Burlington, Vermont
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Fukushima A, Hagiwara H, Fujioka H, Kimura F, Akema T, Funabashi T. Sex differences in feeding behavior in rats: the relationship with neuronal activation in the hypothalamus. Front Neurosci 2015; 9:88. [PMID: 25870535 PMCID: PMC4378303 DOI: 10.3389/fnins.2015.00088] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Accepted: 03/02/2015] [Indexed: 01/21/2023] Open
Abstract
There is general agreement that the central nervous system in rodents differs between sexes due to the presence of gonadal steroid hormone during differentiation. Sex differences in feeding seem to occur among species, and responses to fasting (i.e., starvation), gonadal steroids (i.e., testosterone and estradiol), and diet (i.e., western-style diet) vary significantly between sexes. The hypothalamus is the center for controlling feeding behavior. We examined the activation of feeding-related peptides in neurons in the hypothalamus. Phosphorylation of cyclic AMP response element-binding protein (CREB) is a good marker for neural activation, as is the Fos antigen. Therefore, we predicted that sex differences in the activity of melanin-concentrating hormone (MCH) neurons would be associated with feeding behavior. We determined the response of MCH neurons to glucose in the lateral hypothalamic area (LHA) and our results suggested MCH neurons play an important role in sex differences in feeding behavior. In addition, fasting increased the number of orexin neurons harboring phosphorylated CREB in female rats (regardless of the estrous day), but not male rats. Glucose injection decreased the number of these neurons with phosphorylated CREB in fasted female rats. Finally, under normal spontaneous food intake, MCH neurons, but not orexin neurons, expressed phosphorylated CREB. These sex differences in response to fasting and glucose, as well as under normal conditions, suggest a vulnerability to metabolic challenges in females.
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Affiliation(s)
- Atsushi Fukushima
- Department of Physiology, St. Marianna University School of Medicine Kawasaki, Japan
| | - Hiroko Hagiwara
- Department of Physiology, St. Marianna University School of Medicine Kawasaki, Japan ; Department of Physiology, Yokohama City University Graduate School of Medicine Yokohama, Japan
| | - Hitomi Fujioka
- Department of Physiology, St. Marianna University School of Medicine Kawasaki, Japan
| | - Fukuko Kimura
- Department of Physiology, Yokohama City University Graduate School of Medicine Yokohama, Japan
| | - Tatsuo Akema
- Department of Physiology, St. Marianna University School of Medicine Kawasaki, Japan
| | - Toshiya Funabashi
- Department of Physiology, St. Marianna University School of Medicine Kawasaki, Japan ; Department of Physiology, Yokohama City University Graduate School of Medicine Yokohama, Japan
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Gagliano H, Nadal R, Armario A. Sex differences in the long-lasting effects of a single exposure to immobilization stress in rats. Horm Behav 2014; 66:793-801. [PMID: 25461973 DOI: 10.1016/j.yhbeh.2014.11.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/24/2014] [Revised: 10/21/2014] [Accepted: 11/08/2014] [Indexed: 12/28/2022]
Abstract
In male rats, a single exposure to a severe stressor such as immobilization (IMO) results in marked activation of the HPA axis and reduction of body weight gain. In addition, the HPA response to the same (homotypic) stressor is reduced, whereas the response to a different (heterotypic) stressor is enhanced for days. Although sex differences in the responsiveness of the HPA axis have been described, there are few studies about the influence of sex on long-lasting effects of stress. Thus, we have compared the consequences of a single exposure to IMO in male and female rats. Females showed a similar ACTH response to the first IMO associated with higher corticosterone, but they were more resistant than males to stress-induced loss of body weight. Unstressed females showed higher resting levels of ACTH and corticosterone, but they did not show the increase in the resting levels of HPA hormones observed in males on the day after IMO. During exposure to a different stressor (open-field) two days after IMO, enhanced corticosterone response and hypoactivity was observed in males, but not in females. Finally, a second exposure to IMO 8 days after the first one resulted in a reduction of the HPA response and of the negative impact on body weight as compared to the first exposure, and this protective effect was greater in females. In sum, IMO-exposed females showed a greater reduction of the response to a second IMO and appear to be more resistant than males to some of the negative impacts of IMO.
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Affiliation(s)
- Humberto Gagliano
- Institut de Neurociències, Universitat Autònoma de Barcelona, Spain; Animal Physiology Unit (Faculty of Biosciences), Universitat Autònoma de Barcelona, Spain
| | - Roser Nadal
- Institut de Neurociències, Universitat Autònoma de Barcelona, Spain; Psychobiology Unit (Faculty of Psychology), Universitat Autònoma de Barcelona, Spain.
| | - Antonio Armario
- Institut de Neurociències, Universitat Autònoma de Barcelona, Spain; Animal Physiology Unit (Faculty of Biosciences), Universitat Autònoma de Barcelona, Spain.
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Couch ME, Dittus K, Toth MJ, Willis MS, Guttridge DC, George JR, Barnes CA, Gourin CG, Der-Torossian H. Cancer cachexia update in head and neck cancer: Definitions and diagnostic features. Head Neck 2014; 37:594-604. [DOI: 10.1002/hed.23599] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2013] [Revised: 10/21/2013] [Accepted: 01/07/2014] [Indexed: 11/11/2022] Open
Affiliation(s)
- Marion E. Couch
- Division of Otolaryngology - Head and Neck Surgery; Department of Surgery; Vermont Cancer Center; University of Vermont, College of Medicine; Burlington Vermont
| | - Kim Dittus
- Division of Hematology - Oncology; Department of Medicine; Vermont Cancer Center; University of Vermont, College of Medicine; Burlington Vermont
| | - Michael J. Toth
- Department of Molecular Physiology and Biophysics; University of Vermont, College of Medicine; Burlington Vermont
| | - Monte S. Willis
- Department of Pathology and Laboratory Medicine; McAllister Heart Institute; University of North Carolina; Chapel Hill North Carolina
| | - Denis C. Guttridge
- Department of Molecular Virology; Immunology; and Medical Genetics; Ohio State University; Columbus Ohio
| | - Jonathan R. George
- Department of Otolaryngology - Head and Neck Surgery; University of California; San Francisco California
| | - Christie A. Barnes
- Division of Otolaryngology - Head and Neck Surgery; Department of Surgery; Vermont Cancer Center; University of Vermont, College of Medicine; Burlington Vermont
| | - Christine G. Gourin
- Department of Otolaryngology - Head and Neck Surgery; Johns Hopkins University; Baltimore Maryland
| | - Hirak Der-Torossian
- Division of Otolaryngology - Head and Neck Surgery; Department of Surgery; Vermont Cancer Center; University of Vermont, College of Medicine; Burlington Vermont
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Pacheco-López G, Bermúdez-Rattoni F. Brain-immune interactions and the neural basis of disease-avoidant ingestive behaviour. Philos Trans R Soc Lond B Biol Sci 2011; 366:3389-405. [PMID: 22042916 PMCID: PMC3189354 DOI: 10.1098/rstb.2011.0061] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Neuro-immune interactions are widely manifested in animal physiology. Since immunity competes for energy with other physiological functions, it is subject to a circadian trade-off between other energy-demanding processes, such as neural activity, locomotion and thermoregulation. When immunity is challenged, this trade-off is tilted to an adaptive energy protecting and reallocation strategy that is identified as 'sickness behaviour'. We review diverse disease-avoidant behaviours in the context of ingestion, indicating that several adaptive advantages have been acquired by animals (including humans) during phylogenetic evolution and by ontogenetic experiences: (i) preventing waste of energy by reducing appetite and consequently foraging/hunting (illness anorexia), (ii) avoiding unnecessary danger by promoting safe environments (preventing disease encounter by olfactory cues and illness potentiation neophobia), (iii) help fighting against pathogenic threats (hyperthermia/somnolence), and (iv) by associative learning evading specific foods or environments signalling danger (conditioned taste avoidance/aversion) and/or at the same time preparing the body to counteract by anticipatory immune responses (conditioning immunomodulation). The neurobiology behind disease-avoidant ingestive behaviours is reviewed with special emphasis on the body energy balance (intake versus expenditure) and an evolutionary psychology perspective.
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Affiliation(s)
- Gustavo Pacheco-López
- Physiology and Behaviour Laboratory, ETH (Swiss Federal Institute of Technology)-Zurich, Schwerzenbach 8603, Switzerland
| | - Federico Bermúdez-Rattoni
- Neuroscience Division, Cellular Physiology Institute, UNAM (National University of Mexico), Mexico City 04510, Mexico
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Gautron L, Layé S. Neurobiology of inflammation-associated anorexia. Front Neurosci 2010; 3:59. [PMID: 20582290 PMCID: PMC2858622 DOI: 10.3389/neuro.23.003.2009] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2009] [Accepted: 12/16/2009] [Indexed: 12/23/2022] Open
Abstract
Compelling data demonstrate that inflammation-associated anorexia directly results from the action of pro-inflammatory factors, primarily cytokines and prostaglandins E2, on the nervous system. For instance, the aforementioned pro-inflammatory factors can stimulate the activity of peripheral sensory neurons, and induce their own de novo synthesis and release into the brain parenchyma and cerebrospinal fluid. Ultimately, it results in the mobilization of a specific neural circuit that shuts down appetite. The present article describes the different cell groups and neurotransmitters involved in inflammation-associated anorexia and examines how they interact with neural systems regulating feeding such as the melanocortin system. A better understanding of the neurobiological mechanisms underlying inflammation-associated anorexia will help to develop appetite stimulants for cancer and AIDS patients.
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Affiliation(s)
- Laurent Gautron
- The University of Texas Southwestern Medical Center Dallas, TX, USA
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Bassil MS, Hwalla N, Obeid OA. Meal pattern of male rats maintained on histidine-, leucine-, or tyrosine-supplemented diet. Obesity (Silver Spring) 2007; 15:616-23. [PMID: 17372311 DOI: 10.1038/oby.2007.565] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
OBJECTIVE Food intake is known to be affected by macronutrient composition of the diet, and protein manipulation has been reported to alter food intake, but the effect of individual amino acids on eating behavior has not been fully studied. This study investigated the effect of diet supplementation with three individual amino acids on meal pattern in male rats. RESEARCH METHODS AND PROCEDURES Thirty-two Sprague-Dawley rats were randomly divided into four equal groups and fed control diet or histidine (5%)-, leucine (5%)-, or tyrosine (5%)-supplemented diet for 2 weeks and were monitored for their meal pattern. RESULTS Total food intake and feeding rate of the different groups were not affected, although other components of meal pattern were altered. Histidine supplementation reduced diurnal meal size by 42% (p < 0.05), whereas that of leucine increased nocturnal meal size by approximately 35% (p < 0.05). Tyrosine supplementation increased food intake of the nocturnal period and decreased that of the diurnal period. Both histidine and tyrosine supplementation elevated fasting plasma insulin levels and suppressed fasting glucose significantly. DISCUSSION Individual amino acids were found to alter meal pattern differently. Further investigations are required to dissect the involvement of central and peripheral factors in these alterations.
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Affiliation(s)
- Maya S Bassil
- Department of Nutrition and Food Sciences, Faculty of Agricultural and Food Sciences, American University of Beirut, P.O. Box 11-0236, Beirut, Lebanon
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Abstract
Conditioned food aversion (CFA) and taste aversion (CTA) are widely occurring phenomena mediating rejection of solids or liquids, the ingestion of which has induced the onset of post-ingestional malaise. It is a powerful and durable imprint learning that may influence food choice and intake in all animals, including humans. For ethical reasons, CTA has been extensively investigated in a wide variety of laboratory animal's species but only incidentally in humans. Nevertheless, convincing evidence has been provided that CFA and CTA learning are possible in a wide range of human subjects. The results in humans may have some limitations in accuracy since data are sparse, sometimes indirect, and poorly controlled. There is only limited information on the extent of CFA in the elderly since most studies have employed questionnaire and/or interview methods on young people (i.e. college students). The present review evaluates the literature derived both from laboratory animals and humans. In the first instance, the salient features of food and taste aversion learning and the neural mechanisms involved in this learning behavior will be examined. Then, the problems encountered when trying to assess the role of learned food and taste aversions in the nutritional status of healthy as well as sick young or elderly people will be considered. In particular, the importance of CFA on the nutritional status of cancer patients and treatment of alcoholism will be examined. It is concluded that the data are compelling enough to warrant further research and, some indications and recommendations are suggested.
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Affiliation(s)
- Giuseppe Scalera
- Dip. Scienze Biomediche, Sez. Fisiologia, Universitá di Modena e Reggio Emilia, Modena, Italy.
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Laviano A, Rossi Fanelli F, Meguid MM. Age and sex influence on appetite. Clin Nutr 2002; 21:186-7; author reply 187. [PMID: 12056794 DOI: 10.1054/clnu.2001.0547] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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