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Værøy H, Lahaye E, Dubessy C, Benard M, Nicol M, Cherifi Y, Takhlidjt S, do Rego JL, do Rego JC, Chartrel N, Fetissov SO. Immunoglobulin G is a natural oxytocin carrier which modulates oxytocin receptor signaling: relevance to aggressive behavior in humans. Discov Ment Health 2023; 3:21. [PMID: 37983005 PMCID: PMC10587035 DOI: 10.1007/s44192-023-00048-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 10/12/2023] [Indexed: 11/21/2023]
Abstract
Oxytocin is a neuropeptide produced mainly in the hypothalamus and secreted in the CNS and blood. In the brain, it plays a major role in promoting social interactions. Here we show that in human plasma about 60% of oxytocin is naturally bound to IgG which modulates oxytocin receptor signaling. Further, we found that IgG of violent aggressive inmates were characterized by lower affinity for oxytocin, causing decreased oxytocin carrier capacity and reduced receptor activation as compared to men from the general population. Moreover, peripheral administration of oxytocin together with human oxytocin-reactive IgG to resident mice in a resident-intruder test, reduced c-fos activation in several brain regions involved in the regulation of aggressive/defensive behavior correlating with the attack number and duration. We conclude that IgG is a natural oxytocin carrier protein modulating oxytocin receptor signaling which can be relevant to the biological mechanisms of aggressive behavior.
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Affiliation(s)
- Henning Værøy
- Department of Psychiatric Research, Akershus University Hospital, 1478, Nordbyhagen, Norway.
| | - Emilie Lahaye
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
| | - Christophe Dubessy
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
- INSERM US51, CNRS UAR 2026, Imagine Platform PRIMACEN- HeRacLeS, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandie, 76000, Rouen, France
| | - Magalie Benard
- INSERM US51, CNRS UAR 2026, Imagine Platform PRIMACEN- HeRacLeS, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandie, 76000, Rouen, France
| | - Marion Nicol
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
| | - Yamina Cherifi
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
| | - Saloua Takhlidjt
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
| | - Jean-Luc do Rego
- INSERM US51, CNRS UAR 2026, Behavioral Analysis Platform SCAC-HeRacLeS, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandie, 76000, Rouen, France
| | - Jean-Claude do Rego
- INSERM US51, CNRS UAR 2026, Behavioral Analysis Platform SCAC-HeRacLeS, Institute for Research and Innovation in Biomedicine (IRIB), University of Rouen Normandie, 76000, Rouen, France
| | - Nicolas Chartrel
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France
| | - Sergueï O Fetissov
- INSERM 1239, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, University of Rouen Normandie, 76000, Rouen, France.
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Nicol M, Lahaye E, El Mehdi M, do Rego JL, do Rego JC, Fetissov SO. Lactobacillus salivarius and Lactobacillus gasseri supplementation reduces stress-induced sugar craving in mice. Eur Eat Disord Rev 2023. [PMID: 37365682 DOI: 10.1002/erv.3004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/18/2023] [Accepted: 06/12/2023] [Indexed: 06/28/2023]
Abstract
OBJECTIVE Increased intake of sweets or sugar craving may occur in response to chronic stress representing a risk factor for development of eating disorders and obesity. However, no safe treatment of stress-induced sugar craving is available. In this study we analysed effects of two Lactobacillus strains on food and sucrose intake in mice before and during their exposure to a chronic mild stress (CMS). RESEARCH METHODS & PROCEDURES C57Bl6 mice were gavaged daily for 27 days with a mix of L. salivarius (LS) LS7892 and L. gasseri (LG) LG6410 strains or with 0.9% NaCl as a control. Following 10 days of gavage, mice were individually placed into the Modular Phenotypic cages, and after 7 days of acclimation were exposed to a CMS model for 10 days. Food, water and 2% sucrose intakes as well as meal pattern were monitored. Anxiety and depressive-like behaviour were analysed by standard tests. RESULTS Exposure of mice to CMS was accompanied by increased size of sucrose intake in the control group likely reflecting the stress-induced sugar craving. A consistent, about 20% lower total sucrose intake, was observed in the Lactobacilli-treated group during stress which was mainly due to a reduced number of intakes. Lactobacilli treatment also modified the meal pattern before and during the CMS, showing a decrease of meal number and an increase of meal size with a tendency of reduced total daily food intake. Mild anti-depressive behavioural effects of the Lactobacilli mix were also present. CONCLUSION Supplementation of mice with LS LS7892 and LG LG6410 decreases sugar consumption suggesting a potential utility of these strains against stress-induced sugar craving.
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Affiliation(s)
- Marion Nicol
- Regulatory Peptides - Energy Metabolism and Motivated Behavior Team, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Inserm UMR 1239, University of Rouen Normandie, Rouen, France
| | - Emilie Lahaye
- Regulatory Peptides - Energy Metabolism and Motivated Behavior Team, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Inserm UMR 1239, University of Rouen Normandie, Rouen, France
| | - Mouna El Mehdi
- Regulatory Peptides - Energy Metabolism and Motivated Behavior Team, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Inserm UMR 1239, University of Rouen Normandie, Rouen, France
| | - Jean-Luc do Rego
- University of Rouen Normandie, Inserm US51, CNRS UAR2026, Animal Behavioral Platform SCAC-HeRacLeS, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Jean-Claude do Rego
- University of Rouen Normandie, Inserm US51, CNRS UAR2026, Animal Behavioral Platform SCAC-HeRacLeS, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | - Serguei O Fetissov
- Regulatory Peptides - Energy Metabolism and Motivated Behavior Team, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Inserm UMR 1239, University of Rouen Normandie, Rouen, France
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Zolotarev VA, Murovets VO, Sepp AL, Sozontov EA, Lukina EA, Khropycheva RP, Pestereva NS, Ivleva IS, El Mehdi M, Lahaye E, Chartrel N, Fetissov SO. Protein Extract of a Probiotic Strain of Hafnia alvei and Bacterial ClpB Protein Improve Glucose Tolerance in Mice. Int J Mol Sci 2023; 24:10590. [PMID: 37445766 DOI: 10.3390/ijms241310590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 06/20/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
A commercial strain of Hafnia alvei (H. alvei) 4597 bacteria was shown to reduce food intake and promote weight loss, effects possibly induced by the bacterial protein ClpB, an antigen-mimetic of the anorexigenic α-melanocyte-stimulating hormone. A decrease in the basal plasma glucose levels was also observed in overweight fasted humans and mice receiving H. alvei. However, it is not known whether H. alvei influences sweet taste preference and whether its protein extract or ClpB are sufficient to increase glucose tolerance; these are the objectives tested in the present study. C57BL/6J male mice were kept under standard diet and were gavaged daily for 17 days with a suspension of H. alvei (4.5 × 107 CFU/animal) or with H. alvei total protein extract (5 μg/animal) or saline as a control. Sweet taste preference was analyzed via a brief-access licking test with sucrose solution. Glucose tolerance tests (GTT) were performed after the intraperitoneal (IP) or intragastric (IG) glucose administration at the 9th and 15th days of gavage, respectively. The expression of regulatory peptides' mRNA levels was assayed in the hypothalamus. In another experiment performed in non-treated C57BL/6J male mice, effects of acute IP administration of recombinant ClpB protein on glucose tolerance were studied by both IP- and IG-GTT. Mice treated with the H. alvei protein extract showed an improved glucose tolerance in IP-GTT but not in IG-GTT. Both groups treated with H. alvei bacteria or protein extract showed a reduction of pancreatic tissue weight but without significant changes to basal plasma insulin. No significant effects of H. alvei bacteria or its total protein extract administration were observed on the sweet taste preference, insulin tolerance and expression of regulatory peptides' mRNA in the hypothalamus. Acute administration of ClpB in non-treated mice increased glucose tolerance during the IP-GTT but not the IG-GTT, and reduced basal plasma glucose levels. We conclude that both the H. alvei protein extract introduced orally and the ClpB protein administered via IP improve glucose tolerance probably by acting at the glucose postabsorptive level. Moreover, H. alvei probiotic does not seem to influence the sweet taste preference. These results justify future testing of both the H. alvei protein extract and ClpB protein in animal models of diabetes.
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Affiliation(s)
- Vasiliy A Zolotarev
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint-Petersburg, Russia
| | - Vladimir O Murovets
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint-Petersburg, Russia
| | - Anastasiya L Sepp
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint-Petersburg, Russia
| | - Egor A Sozontov
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint-Petersburg, Russia
| | - Ekaterina A Lukina
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint-Petersburg, Russia
| | - Raisa P Khropycheva
- Pavlov Institute of Physiology, Russian Academy of Sciences, 199034 Saint-Petersburg, Russia
| | - Nina S Pestereva
- Institute of Experimental Medicine, 197376 Saint-Petersburg, Russia
| | - Irina S Ivleva
- Institute of Experimental Medicine, 197376 Saint-Petersburg, Russia
| | - Mouna El Mehdi
- Inserm UMR1239 Laboratory, Team: Regulatory Peptides-Energy Metabolism and Motivated Behavior, University of Rouen Normandie, 76130 Mont-Saint-Aignan, France
| | - Emilie Lahaye
- Inserm UMR1239 Laboratory, Team: Regulatory Peptides-Energy Metabolism and Motivated Behavior, University of Rouen Normandie, 76130 Mont-Saint-Aignan, France
| | - Nicolas Chartrel
- Inserm UMR1239 Laboratory, Team: Regulatory Peptides-Energy Metabolism and Motivated Behavior, University of Rouen Normandie, 76130 Mont-Saint-Aignan, France
| | - Sergueï O Fetissov
- Inserm UMR1239 Laboratory, Team: Regulatory Peptides-Energy Metabolism and Motivated Behavior, University of Rouen Normandie, 76130 Mont-Saint-Aignan, France
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Værøy H, Takhlidjt S, Cherifi Y, Lahaye E, Chartrel N, Fetissov SO. Blood Levels of Neuropeptide 26RFa in Relation to Anxiety and Aggressive Behavior in Humans-An Exploratory Study. Brain Sci 2023; 13:brainsci13020237. [PMID: 36831780 PMCID: PMC9954400 DOI: 10.3390/brainsci13020237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2022] [Revised: 01/27/2023] [Accepted: 01/29/2023] [Indexed: 02/04/2023] Open
Abstract
26RFa, also referred to as QRFP, is a hypothalamic neuropeptide mainly known for its role in the regulation of appetite and glucose metabolism. Its possible relevance to emotional regulation is largely unexplored. To address this, in the present exploratory study, we analyzed the plasma concentrations of 26RFa in humans characterized by different levels of anxiety and aggressive behavior. For this purpose, the study included 13 prison inmates who have committed violent crimes and 19 age-matched healthy men from the general population as controls. Anxiety, depression and aggressive behavior were evaluated in both groups using standard questionnaires. The inmate group was characterized by increased aggression and anxiety compared to the controls. We found that the mean plasma levels of 26RFa did not significantly differ between the inmates and the controls. However, several high outliers were present only in the inmate group. The plasma levels of 26RFa correlated positively with the anxiety scores in all the studied subjects and controls. After removing the high outliers in the inmate group, positive correlations of 26RFa with anxiety and a subscale of hostility in the aggression scale were also recorded in this group. No significant correlations of 26RFa with depression scores or other parameters of aggressive behavior were found. Thus, the present results did not support an involvement of 26RFa in aggressive behavior in humans but pointed to a link between this neuropeptide and anxiety. Nevertheless, considering the exploratory nature of the present study, this conclusion should be verified in a larger cohort, including the clinical degree of anxiety.
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Affiliation(s)
- Henning Værøy
- Department of Psychiatric Research, Akershus University Hospital, N-1478 Nordbyhagen, Norway
| | - Saloua Takhlidjt
- Regulatory Peptides-Energy Metabolism and Motivated Behavior Team, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Inserm UMR1239, University of Rouen Normandie, 76000 Rouen, France
| | - Yamina Cherifi
- Regulatory Peptides-Energy Metabolism and Motivated Behavior Team, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Inserm UMR1239, University of Rouen Normandie, 76000 Rouen, France
| | - Emilie Lahaye
- Regulatory Peptides-Energy Metabolism and Motivated Behavior Team, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Inserm UMR1239, University of Rouen Normandie, 76000 Rouen, France
| | - Nicolas Chartrel
- Regulatory Peptides-Energy Metabolism and Motivated Behavior Team, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Inserm UMR1239, University of Rouen Normandie, 76000 Rouen, France
| | - Serguei O. Fetissov
- Regulatory Peptides-Energy Metabolism and Motivated Behavior Team, Neuroendocrine, Endocrine and Germinal Differentiation and Communication Laboratory, Inserm UMR1239, University of Rouen Normandie, 76000 Rouen, France
- Correspondence:
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Molfino A, Amabile MI, Imbimbo G, Emiliani A, Ramaccini C, Lahaye E, Takagi K, Fetissov SO. Plasma enterobacterial ClpB levels and ClpB- and α-MSH-reactive immunoglobulins in lung cancer patients with and without anorexia. Nutrition 2020; 78:110952. [PMID: 32866900 DOI: 10.1016/j.nut.2020.110952] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 06/18/2020] [Accepted: 07/06/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVES Anorexia represents a common and debilitating clinical problem in patients with several forms of cancer, in particular lung cancer, but its mechanisms are not completely understood. Recently, the caseinolytic-protease-B (ClpB) homologue protein, produced by common gut bacteria, such as Escherichia coli, was identified as an antigen-mimetic of α-melanocyte-stimulating hormone (α-MSH), an anorexigenic neuropeptide. ClpB was previously detected in human plasma and displayed satietogenic properties; however, its possible relevance to cancer anorexia has not yet been investigated. METHODS To address this question, we analyzed plasma ClpB concentrations as well as levels and affinities of anti-ClpB and α-MSH-reactive antibodies in patients with lung cancer with and without anorexia as compared with body mass index-matched healthy controls with normal appetite. RESULTS We found that plasma ClpB concentrations were significantly lower in non-anorexic patients with cancer than those of the control group (P = 0.028). In contrast, patients with cancer and anorexia had lower levels of anti-ClpB immunoglobulins (Ig)M (P < 0.0001) and of both α-MSH IgM and IgG (P < 0.05) with respect to controls. Moreover, in patients with cancer and anorexia, anti-ClpB IgG showed a trend of lower affinities compared with non-anorexic patients (P = 0.05). CONCLUSIONS Taken together, the results revealed a reduced humoral immune response to ClpB in patients with cancer and anorexia, which may lead to an enhanced satietogenic effect of this enterobacterial protein contributing to the mechanisms of reduced appetite.
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Affiliation(s)
- Alessio Molfino
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy.
| | - Maria Ida Amabile
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Giovanni Imbimbo
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Alessandra Emiliani
- Department of Radiological, Oncological and Pathologic Sciences, Division of Medical Oncology, Sapienza University of Rome, Rome, Italy
| | - Cesarina Ramaccini
- Department of Translational and Precision Medicine, Sapienza University of Rome, Rome, Italy
| | - Emilie Lahaye
- Laboratory of Neuronal and Neuroendocrine Differentiation and Communication, Institute for Research and Innovation in Biomedicine (IRIB), Normandie University, Rouen, France
| | - Kuniko Takagi
- Laboratory of Neuronal and Neuroendocrine Differentiation and Communication, Institute for Research and Innovation in Biomedicine (IRIB), Normandie University, Rouen, France
| | - Sergueï O Fetissov
- Laboratory of Neuronal and Neuroendocrine Differentiation and Communication, Institute for Research and Innovation in Biomedicine (IRIB), Normandie University, Rouen, France
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Leeuw D, Lahaye E, Ranquin R. [Spontaneous bilateral bimalleolar fracture in a diabetic patient with visceral neuropathy]. Ned Tijdschr Geneeskd 1975; 119:875-9. [PMID: 806823] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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