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Álvarez SA, Rocha-Guzmán NE, González-Laredo RF, Gallegos-Infante JA, Moreno-Jiménez MR, Bravo-Muñoz M. Ancestral Food Sources Rich in Polyphenols, Their Metabolism, and the Potential Influence of Gut Microbiota in the Management of Depression and Anxiety. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:944-956. [PMID: 35041424 DOI: 10.1021/acs.jafc.1c06151] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The relationship between a population's diet and the risk of suffering from mental disorders has gained importance in recent years, becoming exacerbated due to the COVID-19 lockdown. This review concentrates relevant literature from Scopus, PubMed, and Google Scholar analyzed with the aim of rescuing knowledge that promotes mental health. In this context, it is important to highlight those flowers, seeds, herbaceous plants, fungi, leaves, and tree barks, among other ancestral matrices, that have been historically part of the eating habits of human beings and have also been a consequence of the adaptation of collectors, consuming the ethnoflora present in different ecosystems. Likewise, it is important to note that this knowledge has been progressively lost in the new generations. Therefore, this review concentrates an important number of matrices used particularly for food and medicinal purposes, recognized for their anxiolytic and antidepressant effects, establishing the importance of metabolism and biotransformation mainly of bioactive compounds such as polyphenols by the action of the gut microbiota.
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Affiliation(s)
- Saúl Alberto Álvarez
- Research Group on Functional Foods and Nutraceuticals, TecNM/Instituto Tecnológico de Durango, Felipe Pescador 1830 Ote., 34080 Durango, Durango, México
| | - Nuria Elizabeth Rocha-Guzmán
- Research Group on Functional Foods and Nutraceuticals, TecNM/Instituto Tecnológico de Durango, Felipe Pescador 1830 Ote., 34080 Durango, Durango, México
| | - Rubén Francisco González-Laredo
- Research Group on Functional Foods and Nutraceuticals, TecNM/Instituto Tecnológico de Durango, Felipe Pescador 1830 Ote., 34080 Durango, Durango, México
| | - José Alberto Gallegos-Infante
- Research Group on Functional Foods and Nutraceuticals, TecNM/Instituto Tecnológico de Durango, Felipe Pescador 1830 Ote., 34080 Durango, Durango, México
| | - Martha Rocío Moreno-Jiménez
- Research Group on Functional Foods and Nutraceuticals, TecNM/Instituto Tecnológico de Durango, Felipe Pescador 1830 Ote., 34080 Durango, Durango, México
| | - Marely Bravo-Muñoz
- Instituo Nacional de Neurociencias y Salud Mental, INNSAM, 21831 Chiapas, México
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Pharmacological properties of glabridin (a flavonoid extracted from licorice): A comprehensive review. J Funct Foods 2021. [DOI: 10.1016/j.jff.2021.104638] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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3
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Pretorius L, Smith C. The trace aminergic system: a gender-sensitive therapeutic target for IBS? J Biomed Sci 2020; 27:95. [PMID: 32981524 PMCID: PMC7520957 DOI: 10.1186/s12929-020-00688-1] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 09/15/2020] [Indexed: 02/06/2023] Open
Abstract
Due to a lack of specific or sensitive biomarkers, drug discovery advances have been limited for individuals suffering from irritable bowel syndrome (IBS). While current therapies provide symptomatic relief, inflammation itself is relatively neglected, despite the presence of chronic immune activation and innate immune system dysfunction. Moreover, considering the microgenderome concept, gender is a significant aetiological risk factor. We believe that we have pinpointed a "missing link" that connects gender, dysbiosis, diet, and inflammation in the context of IBS, which may be manipulated as therapeutic target. The trace aminergic system is conveniently positioned at the interface of the gut microbiome, dietary nutrients and by-products, and mucosal immunity. Almost all leukocyte populations express trace amine associated receptors and significant amounts of trace amines originate from both food and the gut microbiota. Additionally, although IBS-specific data are sparse, existing data supports an interpretation in favour of a gender dependence in trace aminergic signalling. As such, trace aminergic signalling may be altered by fluctuations of especially female reproductive hormones. Utilizing a multidisciplinary approach, this review discusses potential mechanisms of actions, which include hyperreactivity of the immune system and aberrant serotonin signalling, and links outcomes to the symptomology clinically prevalent in IBS. Taken together, it is feasible that the additional level of regulation by the trace aminergic system in IBS has been overlooked, until now. As such, we suggest that components of the trace aminergic system be considered targets for future therapeutic action, with the specific focus of reducing oxidative stress and inflammation.
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Affiliation(s)
- Lesha Pretorius
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch Private Bag X1, Stellenbosch, 7062, South Africa
| | - Carine Smith
- Department of Physiological Sciences, Stellenbosch University, Stellenbosch Private Bag X1, Stellenbosch, 7062, South Africa.
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El-Hawary SS, Sobeh M, Badr WK, Abdelfattah MAO, Ali ZY, El-Tantawy ME, Rabeh MA, Wink M. HPLC-PDA-MS/MS profiling of secondary metabolites from Opuntia ficus-indica cladode, peel and fruit pulp extracts and their antioxidant, neuroprotective effect in rats with aluminum chloride induced neurotoxicity. Saudi J Biol Sci 2020; 27:2829-2838. [PMID: 32994743 PMCID: PMC7499283 DOI: 10.1016/j.sjbs.2020.07.003] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 06/30/2020] [Accepted: 07/02/2020] [Indexed: 02/06/2023] Open
Abstract
Opuntia ficus-indica (L.) Mill. (OFI), also known as Indian fig Opuntia or prickly pear, is a member of the family Cactaceae that produces edible, nutritionally rich sweet fruits. It has been traditionally used to treat several health disorders and is considered to possess various therapeutic properties. In this work, we have characterized 37 secondary metabolites using HPLC-MS/MS, identified the polysaccharide from the fruits and cladodes pulp, and estimated the neuroprotective activity. All tested extracts exhibited substantial antioxidant activities in-vitro and neuroprotective potential in AlCl3 induced Alzheimer's condition. Administration of OFI extracts attenuated AlCl3 induced learning and memory impairment as confirmed from passive avoidance test and counteracted the oxidative stress as manifested from decreasein the elevated MDA level, increased TAC, GSH, SOD and CAT levels. OFI extracts significantly decreased the elevated brain levels of proinflammatory cytokines (NF-κβ and TNF-α), increased anti-inflammatory cytokine (IL-10), and monoamine neurotransmitters (NE, DA, 5-HT) as compared to positive control group. The extracts showed a significant decrease in acetylcholinesterase level (AChE) as compared with AlCl3. Furthermore, molecular docking was performed to investigate the ability of the major constituents of OFI extracts to interact with acetylcholinesterase (AChE) and serotonin transporter (SERT). Among the tested extracts, cladodes contain highest phenolic content and exhibited the highest antioxidant, anti-inflammatory and neuroprotective activities, which could be attributed to presence of several polyphenols, which could function as AChE and SERT inhibitors. Opuntia ficus-indica might be promising candidate for treating Alzheimer disease, which makes it a subject for more detailed studies.
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Affiliation(s)
- Seham S El-Hawary
- Department of Pharmacogosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Mansour Sobeh
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, 69120-Heidelberg, Germany.,AgroBiosciences Research Division, Mohammed VI Polytechnic University, Lot 660-Hay Moulay Rachid, 43150 Ben-Guerir, Morocco
| | - Wafaa K Badr
- Department of Medicinal plants and natural products, National Organization of Drug Control and Research, Giza, Egypt
| | | | - Zeinab Y Ali
- Department of Biochemistry, National Organization of Drug Control and Research, 12553 Giza, Egypt
| | - Mona E El-Tantawy
- Department of Medicinal plants and natural products, National Organization of Drug Control and Research, Giza, Egypt
| | - Mohamed A Rabeh
- Department of Pharmacogosy, Faculty of Pharmacy, Cairo University, Cairo 11562, Egypt
| | - Michael Wink
- Institute of Pharmacy and Molecular Biotechnology, Heidelberg University, Im Neuenheimer Feld 364, 69120-Heidelberg, Germany
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Fathinezhad Z, Sewell RDE, Lorigooini Z, Rafieian-Kopaei M. Depression and Treatment with Effective Herbs. Curr Pharm Des 2020; 25:738-745. [PMID: 30947651 DOI: 10.2174/1381612825666190402105803] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2019] [Accepted: 03/26/2019] [Indexed: 11/22/2022]
Abstract
Depression is a common psychiatric disease and one of the main causes of disability worldwide. In spite of certain developments in this field, chemical and synthetic drugs used for the treatment of depression disrupt the treatment process due to numerous side effects and high cost. Today, the goal of using a potential method for treating depression involves the use of medicinal and phytochemical plants, which have many therapeutic benefits. Studies have shown that medicinal plants affect the nervous system and exert antidepressant effects in various ways, including synaptic regulation of serotonin, noradrenaline and dopamine, and inflammatory mediators. In this study, depression as well as the factors and mechanisms involved in its development are first addressed, and then medicinal plants effective in the treatment of depression along with their mechanisms of actions are reported.
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Affiliation(s)
- Zohre Fathinezhad
- Department of Biochemistry, Faculty of Biological Sciences, Tarbiat Modares University, Tehran, Iran
| | - Robert D E Sewell
- Cardiff School of Pharmacy and Pharmaceutical Sciences, Cardiff University, Cardiff, CF10 3NB. Wales, United Kingdom
| | - Zahra Lorigooini
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
| | - Mahmoud Rafieian-Kopaei
- Medical Plants Research Center, Basic Health Sciences Institute, Shahrekord University of Medical Sciences, Shahrekord, Iran
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Park H, Kim H, Lee Y. Knee osteoarthritis and its association with mental health and health‐related quality of life: A nationwide cross‐sectional study. Geriatr Gerontol Int 2020; 20:379-383. [DOI: 10.1111/ggi.13879] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/08/2020] [Accepted: 01/15/2020] [Indexed: 12/14/2022]
Affiliation(s)
- Hye‐Min Park
- Department of Family MedicineYonsei University College of Medicine Seoul Korea
- Department of MedicineGraduate School of Medicine, Yonsei University Seoul Korea
| | - Hyoung‐Sik Kim
- Department of Orthopedic SurgeryYonsei University College of Medicine Seoul Korea
| | - Yong‐Jae Lee
- Department of Family MedicineYonsei University College of Medicine Seoul Korea
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Pottoo FH, Javed MN, Barkat MA, Alam MS, Nowshehri JA, Alshayban DM, Ansari MA. Estrogen and Serotonin: Complexity of Interactions and Implications for Epileptic Seizures and Epileptogenesis. Curr Neuropharmacol 2019; 17:214-231. [PMID: 29956631 PMCID: PMC6425080 DOI: 10.2174/1570159x16666180628164432] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Revised: 02/01/2018] [Accepted: 06/25/2018] [Indexed: 12/15/2022] Open
Abstract
A burgeoning literature documents the confluence of ovarian steroids and central serotonergic systems in the in-junction of epileptic seizures and epileptogenesis. Estrogen administration in animals reduces neuronal death from seizures by up-regulation of the prosurvival molecule i.e. Bcl-2, anti-oxidant potential and protection of NPY interneurons. Serotonin modulates epileptiform activity in either direction i.e administration of 5-HT agonists or reuptake inhibitors leads to the acti-vation of 5-HT3 and 5-HT1A receptors tending to impede focal and generalized seizures, while depletion of brain 5-HT along with the destruction of serotonergic terminals leads to expanded neuronal excitability hence abatement of seizure threshold in experimental animal models. Serotonergic neurotransmission is influenced by the organizational activity of ster-oid hormones in the growing brain and the actuation effects of steroids which come in adulthood. It is further established that ovarian steroids bring induction of dendritic spine proliferation on serotonin neurons thus thawing a profound effect on sero-tonergic transmission. This review features 5-HT1A and 5-HT3 receptors as potential targets for ameliorating seizure-induced neurodegeneration and recurrent hypersynchronous neuronal activity. Indeed 5-HT3 receptors mediate cross-talk be-tween estrogenic and serotonergic pathways, and could be well exploited for combinatorial drug therapy against epileptogen-esis.
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Affiliation(s)
- Faheem Hyder Pottoo
- Department of Pharmacology, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University (Formerly University of Dammam), Dammam 31441, Saudi Arabia
| | - Md Noushad Javed
- Department of Pharmaceutics, School of Pharmaceutical Education and Research, Jamia Hamdard, New-Delhi, India
| | - Md Abul Barkat
- Department of Pharmacy, School of Medical and Allied Sciences, K.R.Mangalam University, Gurgaon, India
| | - Md Sabir Alam
- Department of Pharmacy, School of Medical and Allied Sciences, K.R.Mangalam University, Gurgaon, India
| | - Javaid Ashraf Nowshehri
- Department of Pharmaceutical Sciences, Faculty of Applied Sc. and Tech., University of Kashmir, Srinagar, India
| | - Dhafer Mahdi Alshayban
- Department of Clinical Pharmacy, College of Clinical Pharmacy, Imam Abdulrahman Bin Faisal University (Formerly University of Dammam), Dammam 31441, Saudi Arabia
| | - Mohammad Azam Ansari
- Department of Epidemic Disease Research, Institute for Research and Medical Consultations (IRMC), Imam Abdulrahman Bin Faisal University, Dammam 31441, Saudi Arabia
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Grundmann D, Loris E, Maas-Omlor S, Schäfer KH. Enteric Neurogenesis During Life Span Under Physiological and Pathophysiological Conditions. Anat Rec (Hoboken) 2019; 302:1345-1353. [PMID: 30950581 DOI: 10.1002/ar.24124] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 02/04/2019] [Accepted: 02/21/2019] [Indexed: 12/20/2022]
Abstract
The enteric nervous system (ENS) controls gastrointestinal key functions and is mainly characterized by two ganglionated plexus located in the gut wall: the myenteric plexus and the submucous plexus. The ENS harbors a high number and diversity of enteric neurons and glial cells, which generate neuronal circuitry to regulate intestinal physiology. In the past few years, the pivotal role of enteric neurons in the underlying mechanism of several intestinal diseases was revealed. Intestinal diseases are associated with neuronal death that could in turn compromise intestinal functionality. Enteric neurogenesis and regeneration is therefore a crucial aspect within the ENS and could be revealed not only during embryogenesis and early postnatal periods, but also in the adulthood. Enteric glia and/or enteric neural precursor/progenitor cells differentiate into enteric neurons, both under homeostatic and pathologic conditions beyond the perinatal period. The unique role of the intestinal microbiota and serotonin signaling in postnatal and adult neurogenesis has been shown by several studies in health and disease. In this review article, we will mainly focus on different recent studies, which advanced the concept of postnatal and adult ENS neurogenesis. Moreover, we will discuss the key factors and underlying mechanisms, which promote enteric neurogenesis. Finally, we will shortly describe neurogenesis of transplanted enteric neural progenitor cells. Anat Rec, 302:1345-1353, 2019. © 2019 Wiley Periodicals, Inc.
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Affiliation(s)
- David Grundmann
- Department of Biotechnology, University of Applied Sciences Kaiserslautern, Zweibrucken, Germany
| | - Eva Loris
- Department of Biotechnology, University of Applied Sciences Kaiserslautern, Zweibrucken, Germany
| | - Silke Maas-Omlor
- Department of Biotechnology, University of Applied Sciences Kaiserslautern, Zweibrucken, Germany
| | - Karl-Herbert Schäfer
- Department of Biotechnology, University of Applied Sciences Kaiserslautern, Zweibrucken, Germany.,Department of Pediatric Surgery, Medical Faculty Mannheim, University of Heidelberg, Mannheim, Germany
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Hudon Thibeault AA, Sanderson JT, Vaillancourt C. Serotonin-estrogen interactions: What can we learn from pregnancy? Biochimie 2019; 161:88-108. [PMID: 30946949 DOI: 10.1016/j.biochi.2019.03.023] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2019] [Accepted: 03/28/2019] [Indexed: 02/07/2023]
Abstract
We have reviewed the scientific literature related to four diseases in which to serotonin (5-HT) is involved in the etiology, herein named 5-HT-linked diseases, and whose prevalence is influenced by estrogenic status: depression, migraine, irritable bowel syndrome and eating disorders. These diseases all have in common a sex-dimorphic prevalence, with women more frequently affected than men. The co-occurrence between these 5-HT-linked diseases suggests that they have common physiopathological mechanisms. In most 5-HT-linked diseases (except for anorexia nervosa and irritable bowel syndrome), a decrease in the serotonergic tone is observed and estrogens are thought to contribute to the improvement of symptoms by stimulating the serotonergic system. Human pregnancy is characterized by a unique 5-HT and estrogen synthesis by the placenta. Pregnancy-specific disorders, such as hyperemesis gravidarum, gestational diabetes mellitus and pre-eclampsia, are associated with a hyperserotonergic state and decreased estrogen levels. Fetal programming of 5-HT-linked diseases is a complex phenomenon that involves notably fetal-sex differences, which suggest the implication of sex steroids. From a mechanistic point of view, we hypothesize that estrogens regulate the serotonergic system, resulting in a protective effect against 5-HT-linked diseases, but that, in turn, 5-HT affects estrogen synthesis in an attempt to retrieve homeostasis. These two processes (5-HT and estrogen biosynthesis) are crucial for successful pregnancy outcomes, and thus, a disruption of this 5-HT-estrogen relationship may explain pregnancy-specific pathologies or pregnancy complications associated with 5-HT-linked diseases.
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Affiliation(s)
- Andrée-Anne Hudon Thibeault
- INRS-Institut Armand-Frappier, 531, boulevard des Prairies, Laval, QC, H7V 1B7, Canada; Center for Interdisciplinary Research on Well-Being, Health, Society and Environment (Cinbiose), Université du Québec à Montréal, C.P.8888, succ. Centre-Ville, Montréal, QC, H3C 3P8, Canada.
| | - J Thomas Sanderson
- INRS-Institut Armand-Frappier, 531, boulevard des Prairies, Laval, QC, H7V 1B7, Canada.
| | - Cathy Vaillancourt
- INRS-Institut Armand-Frappier, 531, boulevard des Prairies, Laval, QC, H7V 1B7, Canada; Center for Interdisciplinary Research on Well-Being, Health, Society and Environment (Cinbiose), Université du Québec à Montréal, C.P.8888, succ. Centre-Ville, Montréal, QC, H3C 3P8, Canada.
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12
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Ikarashi Y, Sekiguchi K, Mizoguchi K. Serotonin Receptor Binding Characteristics of Geissoschizine Methyl Ether, an Indole Alkaloid in Uncaria Hook. Curr Med Chem 2019; 25:1036-1045. [PMID: 28322152 PMCID: PMC5898036 DOI: 10.2174/0929867324666170320114713] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Revised: 03/08/2017] [Accepted: 03/15/2017] [Indexed: 01/08/2023]
Abstract
Background: Geissoschizine methyl ether (GM) is one of the indole alkaloids in Uncaria hook, and an active ingredient of yokukansan (YKS) that improves behavioral and psychological symp-toms of dementia (BPSD) in patients with several types of dementia. The pharmacological action of GM has been related to various serotonin (5-HT) receptor subtypes. Objective: The aim of this article is to review the binding characteristics of GM to the 5-HT receptor sub-types in the brains using our own data and previous findings. Methods: Competitive receptor-binding and agonist/antagonist activity assays for several 5-HT receptor subtypes were performed. Moreover, the articles describing pharmacokinetics and brain distribution of GM were searched in PubMed. Results: GM bound the following 5-HT receptor subtypes: 5-HT1A, 5-HT1B, 5-HT2A, 5-HT2B, 5-HT2C, 5-HT4, 5-HT5A, 5-HT6, and 5-HT7. Among these receptors, GM had partial agonistic activity for 5-HT1A receptors and antagonistic activity for 5-HT2A, 5-HT2B, 5-HT2C, and 5-HT7 receptors. Also, GM was me-tabolized by various CYP isoforms, mainly CYP3A4. Parent/unchanged GM was detected in both the blood and brain of rats after oral administration of YKS. In the brains, GM was presumed to bind to 5-HT1A, 5-HT2A, 5-HT2B, 5-HT2C, and 5-HT7 receptors on neuron-like large cells mainly in the frontal cor-tex. Conclusion: These results suggest that GM is a pharmacologically important alkaloid that regulates vari-ous serotonergic activities or functions by binding to multiple 5-HT receptor subtypes. Thus, this review provides recent 5-HT receptor-related evidence that GM is partly responsible for pharmacological effects of YKS.
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Affiliation(s)
- Yasushi Ikarashi
- Tsumura Kampo Research Laboratories, Kampo Research & Development Division, Tsumura & Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, Ibaraki 300-1192, Japan
| | - Kyoji Sekiguchi
- Tsumura Kampo Research Laboratories, Kampo Research & Development Division, Tsumura & Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, Ibaraki 300-1192, Japan
| | - Kazushige Mizoguchi
- Tsumura Kampo Research Laboratories, Kampo Research & Development Division, Tsumura & Co., 3586 Yoshiwara, Ami-machi, Inashiki-gun, Ibaraki 300-1192, Japan
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Sex Differences and Estrous Cycle Effects of Peripheral Serotonin-Evoked Rodent Pain Behaviors. Neuroscience 2018; 384:87-100. [PMID: 29800719 DOI: 10.1016/j.neuroscience.2018.05.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 05/10/2018] [Accepted: 05/14/2018] [Indexed: 01/31/2023]
Abstract
Many persistent pain conditions occur predominantly in women making pain a major women's health issue. One theory for the prevalence in females is hormone modulation of pain mechanisms. The peripheral release of the neurotransmitter serotonin (5HT) has been implicated in various sexually dimorphic pain conditions; yet no studies have examined the effect of ovarian hormones on peripheral 5HT-evoked pain behaviors. We hypothesized that peripheral 5HT evokes greater pain behaviors in female rodents during estrus and/or proestrus, stages of the estrous cycle where ovarian hormones are greatly fluctuating. Female Sprague-Dawley rats (250-350 g) from each stage of the estrous cycle, ovariectomized females, and intact males received an intraplantar hindpaw injection of 5HT (2 μg/100 μL) or saline (n = 6 per group) and thermal hyperalgesia, mechanical allodynia, or edema was measured at 0, 10, 20 and 30 min post-injection. A separate group of rats received an ipsilateral injection of the selective 5HT2A antagonist, M100907, 15 min prior to 5HT injection. We report that females in proestrus and estrus exhibited significantly greater and/or longer lasting pain behaviors compared to males, females in diestrus, and ovariectomized females. There were no significant sex differences or estrous cycle effects on 5HT-evoked edema or 5HT content in inflamed hindpaws. Local pretreatment with the 5HT2A receptor antagonist blocked 5HT-evoked thermal hyperalgesia and edema. These data provide evidence of a modulatory role of hormones on peripheral 5HT-evoked pain occurring via the 5HT2A receptor.
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Karkanis A, Martins N, Petropoulos S, Ferreira I. Phytochemical composition, health effects, and crop management of liquorice (Glycyrrhiza glabraL.): Α medicinal plant. FOOD REVIEWS INTERNATIONAL 2016. [DOI: 10.1080/87559129.2016.1261300] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- A. Karkanis
- Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Nea Ionia, Magnesia, Greece
| | - N. Martins
- Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, Bragança, Portugal
| | - S.A. Petropoulos
- Department of Agriculture Crop Production and Rural Environment, University of Thessaly, Nea Ionia, Magnesia, Greece
| | - I.C.F.R. Ferreira
- Mountain Research Centre (CIMO), ESA, Polytechnic Institute of Bragança, Bragança, Portugal
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Kutt A, Girard L, Necyk C, Gardiner P, Boon H, Barnes J, Vohra S. Natural health product-drug interaction tool: A scoping review. Can Pharm J (Ott) 2016; 149:75-82. [PMID: 27076818 DOI: 10.1177/1715163516629156] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Anastasia Kutt
- Integrative Health Institute and CARE Program for Integrative Health & Healing (Kutt, Girard, Vohra)
| | - Lauren Girard
- Integrative Health Institute and CARE Program for Integrative Health & Healing (Kutt, Girard, Vohra)
| | - Candace Necyk
- Integrative Health Institute and CARE Program for Integrative Health & Healing (Kutt, Girard, Vohra)
| | - Paula Gardiner
- Integrative Health Institute and CARE Program for Integrative Health & Healing (Kutt, Girard, Vohra)
| | - Heather Boon
- Integrative Health Institute and CARE Program for Integrative Health & Healing (Kutt, Girard, Vohra)
| | - Joanne Barnes
- Integrative Health Institute and CARE Program for Integrative Health & Healing (Kutt, Girard, Vohra)
| | - Sunita Vohra
- Integrative Health Institute and CARE Program for Integrative Health & Healing (Kutt, Girard, Vohra)
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Pigrau M, Rodiño-Janeiro BK, Casado-Bedmar M, Lobo B, Vicario M, Santos J, Alonso-Cotoner C. The joint power of sex and stress to modulate brain-gut-microbiota axis and intestinal barrier homeostasis: implications for irritable bowel syndrome. Neurogastroenterol Motil 2016; 28:463-86. [PMID: 26556786 DOI: 10.1111/nmo.12717] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Accepted: 10/05/2015] [Indexed: 02/06/2023]
Abstract
BACKGROUND Intestinal homeostasis is a dynamic process that takes place at the interface between the lumen and the mucosa of the gastrointestinal tract, where a constant scrutiny for antigens and toxins derived from food and microorganisms is carried out by the vast gut-associated immune system. Intestinal homeostasis is preserved by the ability of the mucus layer and the mucosal barrier to keep the passage of small-sized and antigenic molecules across the epithelium highly selective. When combined and preserved, immune surveillance and barrier's selective permeability, the host capacity of preventing the development of intestinal inflammation is optimized, and viceversa. In addition, the brain-gut-microbiome axis, a multidirectional communication system that integrates distant and local regulatory networks through neural, immunological, metabolic, and hormonal signaling pathways, also regulates intestinal function. Dysfunction of the brain-gut-microbiome axis may induce the loss of gut mucosal homeostasis, leading to uncontrolled permeation of toxins and immunogenic particles, increasing the risk of appearance of intestinal inflammation, mucosal damage, and gut disorders. Irritable bowel syndrome is prevalent stress-sensitive gastrointestinal disorder that shows a female predominance. Interestingly, the role of stress, sex and gonadal hormones in the regulation of intestinal mucosal and the brain-gut-microbiome axis functioning is being increasingly recognized. PURPOSE We aim to critically review the evidence linking sex, and stress to intestinal barrier and brain-gut-microbiome axis dysfunction and the implications for irritable bowel syndrome.
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Affiliation(s)
- M Pigrau
- Farncombe Family Digestive Health Research Institute, McMaster University, Hamilton, ON, Canada.,Laboratory of Neuro-immuno-gastroenterology, Digestive Diseases Research Unit. Vall d'Hebron Institut de Recerca, Department of Gastroenterology, Hospital Universitario Vall d'Hebron & Facultat de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - B K Rodiño-Janeiro
- Laboratory of Neuro-immuno-gastroenterology, Digestive Diseases Research Unit. Vall d'Hebron Institut de Recerca, Department of Gastroenterology, Hospital Universitario Vall d'Hebron & Facultat de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - M Casado-Bedmar
- Laboratory of Neuro-immuno-gastroenterology, Digestive Diseases Research Unit. Vall d'Hebron Institut de Recerca, Department of Gastroenterology, Hospital Universitario Vall d'Hebron & Facultat de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - B Lobo
- Laboratory of Neuro-immuno-gastroenterology, Digestive Diseases Research Unit. Vall d'Hebron Institut de Recerca, Department of Gastroenterology, Hospital Universitario Vall d'Hebron & Facultat de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - M Vicario
- Laboratory of Neuro-immuno-gastroenterology, Digestive Diseases Research Unit. Vall d'Hebron Institut de Recerca, Department of Gastroenterology, Hospital Universitario Vall d'Hebron & Facultat de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
| | - J Santos
- Laboratory of Neuro-immuno-gastroenterology, Digestive Diseases Research Unit. Vall d'Hebron Institut de Recerca, Department of Gastroenterology, Hospital Universitario Vall d'Hebron & Facultat de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
| | - C Alonso-Cotoner
- Laboratory of Neuro-immuno-gastroenterology, Digestive Diseases Research Unit. Vall d'Hebron Institut de Recerca, Department of Gastroenterology, Hospital Universitario Vall d'Hebron & Facultat de Medicina, Universitat Autònoma de Barcelona, Barcelona, Spain.,Centro de Investigación Biomédica en Red de Enfermedades Hepáticas y Digestivas (CIBERehd), Madrid, Spain
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17
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Hussain SA, Sulaiman AA, Alhaddad H, Alhadidi Q. Natural polyphenols: Influence on membrane transporters. JOURNAL OF COMPLEMENTARY MEDICINE RESEARCH 2016; 5:97-104. [PMID: 27069731 PMCID: PMC4805155 DOI: 10.5455/jice.20160118062127] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Accepted: 01/18/2016] [Indexed: 02/02/2023]
Abstract
Accumulated evidence has focused on the use of natural polyphenolic compounds as nutraceuticals since they showed a wide range of bioactivities and exhibited protection against variety of age-related disorders. Polyphenols have variable potencies to interact, and hence alter the activities of various transporter proteins, many of them classified as anion transporting polypeptide-binding cassette transporters like multidrug resistance protein and p-glycoprotein. Some of the efflux transporters are, generally, linked with anticancer and antiviral drug resistance; in this context, polyphenols may be beneficial in modulating drug resistance by increasing the efficacy of anticancer and antiviral drugs. In addition, these effects were implicated to explain the influence of dietary polyphenols on drug efficacy as result of food-drug interactions. However, limited data are available about the influence of these components on uptake transporters. Therefore, the objective of this article is to review the potential efficacies of polyphenols in modulating the functional integrity of uptake transporter proteins, including those terminated the effect of neurotransmitters, and their possible influence in neuropharmacology.
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Affiliation(s)
- Saad Abdulrahman Hussain
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Baghdad, Baghdad, Iraq
| | - Amal Ajaweed Sulaiman
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Baghdad, Baghdad, Iraq
| | - Hasan Alhaddad
- Department of Pharmacology and Toxicology, College of Pharmacy, University of Baghdad, Baghdad, Iraq
| | - Qasim Alhadidi
- Department of Medicinal and Biological Chemistry, College of Pharmacy and Pharmaceutical Sciences, University of Toledo, 3000 Arlington Avenue, Toledo, OH, 43614, USA
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18
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Rebhun JF, Glynn KM, Missler SR. Identification of glabridin as a bioactive compound in licorice (Glycyrrhiza glabra L.) extract that activates human peroxisome proliferator-activated receptor gamma (PPARγ). Fitoterapia 2015; 106:55-61. [DOI: 10.1016/j.fitote.2015.08.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 08/11/2015] [Accepted: 08/14/2015] [Indexed: 10/23/2022]
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19
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Mannella P, Simoncini T, Genazzani AR. Estrogens and progestins: molecular effects on brain cells. Horm Mol Biol Clin Investig 2015; 4:609-13. [PMID: 25961237 DOI: 10.1515/hmbci.2010.078] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2010] [Accepted: 12/06/2010] [Indexed: 11/15/2022]
Abstract
Sex steroids are known to regulate brain function and their role is so important that several diseases are strictly correlated with the onset of menopause when estrogen-progesterone deficiency makes neural cells much more vulnerable to toxic stimuli. Although in the past years several scientists have focused their studies on in vitro and in vivo effects of sex steroids on the brain, we are still far from complete knowledge. Indeed, contrasting results from large clinical trials have made the entire issue much more complicated. Currently we know that protective effects exerted by sex steroids depend on several factors among which the dose, the health of the cells and the type of molecule being used. In this review, we present an overview of the direct and indirect effects of estrogen and progesterone on the brain with specific focus on the molecular mechanisms by which these molecules act on neural cells.
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20
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Effects of various pharmacological agents on the function of norepinephrine transporter. J UOEH 2015; 37:33-42. [PMID: 25787100 DOI: 10.7888/juoeh.37.33] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The norepinephrine transporter is selectively expressed in noradrenergic nerve terminals, where it can exert spatial and temporal control over the action of norepinephrine. The norepinephrine transporter mediates the termination of neurotransmission via the reuptake of norepinephrine released into the extracellular milieu. In the present brief review, we report our recent studies about the effects of various pharmacological agents such as fasudil, nicotine, pentazocine, ketamine and genistein on norepinephrine transporter function.
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21
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Su GY, Yang JY, Wang F, Xiong ZL, Hou Y, Zhang K, Song C, Ma J, Song SJ, Teng HF, Wu CF. Xiaochaihutang prevents depressive-like behaviour in rodents by enhancing the serotonergic system. J Pharm Pharmacol 2013; 66:823-34. [DOI: 10.1111/jphp.12201] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2013] [Accepted: 11/16/2013] [Indexed: 12/17/2022]
Abstract
Abstract
Objectives
Xiaochaihutang (XCHT) has been used in China for thousands of years to treat ‘Shaoyang syndrome’, which involves depressive-like symptoms. However, no studies were conducted to demonstrate its antidepressant effect and mechanism. This study was designed to confirm the antidepressant effect of XCHT and explore its mechanism using the pharmacological methods.
Methods
Ultra-HPLC and mass spectrometry was used to identify the chemical constituents of XCHT. Forced swimming test (FST) and tail suspension test (TST) were used to determine the antidepressant-like activity of XCHT in mice and rats. The possible mechanism of XCHT was elucidated by the reserpine-induced hypothermia and 5-hydroxytryptophan (5-HTP)-induced head-twitch in mice. The levels of serotonin (5-HT) and 5-hydroxyindoleacetic acid (5-HIAA) were measured in prefrontal cortex and hippocampus tissue of both mice and rats. Moreover, the extracellular 5-HT in rat hippocampus was assessed by using microdialysis coupled to HPLC with electrochemical detection.
Key findings
Forty-four components were detected in XCHT. XCHT significantly reduced immobility time in the TST and the FST, antagonized reserpine-induced depressive-like behaviours, increased 5-HTP-induced head-twitches, elevated 5-HT and 5-HIAA levels, and increased 5-HT turnover at doses that did not affect general activity.
Conclusions
These data demonstrate that XCHT has therapeutic effects in animal models of depression by enhancing the serotoninergic system in the prefrontal cortex and hippocampus.
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Affiliation(s)
- Guang Yue Su
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Jing Yu Yang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Fang Wang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Zhi Li Xiong
- Department of Pharmaceutical Analysis, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Yue Hou
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Kuo Zhang
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Cui Song
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Jie Ma
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Shao Jiang Song
- Department of Traditional Chinese Materia Medica, Shenyang Pharmaceutical University, Shenyang, PR China
| | - Huai Feng Teng
- Chemistry Division, Liaoning Institute for Food and Drug Control, Shenyang, PR China
| | - Chun Fu Wu
- Department of Pharmacology, Shenyang Pharmaceutical University, Shenyang, PR China
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22
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Tominaga Y, Nakagawa K, Mae T, Kitano M, Yokota S, Arai T, Ikematsu H, Inoue S. Licorice flavonoid oil reduces total body fat and visceral fat in overweight subjects: A randomized, double-blind, placebo-controlled study. Obes Res Clin Pract 2013; 3:I-IV. [PMID: 24345587 DOI: 10.1016/j.orcp.2009.04.005] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2008] [Revised: 03/27/2009] [Accepted: 04/23/2009] [Indexed: 02/01/2023]
Abstract
SUMMARY OBJECTIVES To evaluate effects of licorice flavonoid oil (LFO) on total body fat and visceral fat together with body weight, body mass index (BMI) and safety parameters in overweight subjects. METHODS In this randomized, double-blind, placebo-controlled study, moderately overweight participants (56 males, 28 females, BMI 24-30 kg/m(2)) were assigned to four groups receiving a daily dose of either 0 (placebo), 300, 600, or 900 mg of LFO. Total body fat mass was measured by dual-energy X-ray absorptiometry (DXA) and visceral fat area by abdominal computed tomography (CT) scan at baseline and after 8 weeks of LFO ingestion. Body weight, BMI, and blood samples were examined at baseline and after 4 and 8 weeks of LFO ingestion. RESULTS Although caloric intake was similar in all four groups, total body fat mass decreased significantly in the three LFO groups after 8 weeks of ingestion. LFO (900 mg/day) resulted in significant decreases from baseline levels in visceral fat area, body weight, BMI, and LDL-cholesterol. No significant adverse effects were observed.
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Affiliation(s)
- Yuji Tominaga
- Depertment of Clinical Nutrition, Kiryu University, Midori-City, Gumma, Japan
| | - Kaku Nakagawa
- Depertment of Clinical Nutrition, Kiryu University, Midori-City, Gumma, Japan
| | - Tatsumasa Mae
- Depertment of Clinical Nutrition, Kiryu University, Midori-City, Gumma, Japan
| | - Mitsuaki Kitano
- Depertment of Clinical Nutrition, Kiryu University, Midori-City, Gumma, Japan
| | - Shinichi Yokota
- Depertment of Clinical Nutrition, Kiryu University, Midori-City, Gumma, Japan
| | - Toshihiro Arai
- Depertment of Clinical Nutrition, Kiryu University, Midori-City, Gumma, Japan
| | - Hideyuki Ikematsu
- Depertment of Clinical Nutrition, Kiryu University, Midori-City, Gumma, Japan
| | - Shuji Inoue
- Depertment of Clinical Nutrition, Kiryu University, Midori-City, Gumma, Japan.
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Abstract
The most frequently described drugs in the treatment of mood disorders are selective serotonin reuptake and monoamine oxidase (MAO) inhibitors, enhancing serotonin levels in the brain. However, side-effects have been reported for these drugs. Because serotonin levels in the brain are dependent on the availability of the food-derived precursor tryptophan, foods such as chicken, soyabeans, cereals, tuna, nuts and bananas may serve as an alternative to improve mood and cognition. Here we discuss the effects of high- or low-tryptophan-containing food, as well as plant extracts with a modest monoamine reuptake and MAO-A inhibition functional profile, on mood and cognition in healthy and vulnerable human subjects and rodents. Together the studies suggest that there is an inverted U-shaped curve for plasma tryptophan levels, with low and too high tryptophan levels impairing cognition, and moderate to high tryptophan levels improving cognition. This relationship is found for both healthy and vulnerable subjects. Whereas this relationship may also exist for mood, the inverted U-shaped curve for plasma tryptophan levels and mood may be based on different tryptophan concentrations in healthyv.vulnerable individuals. Animal studies are emerging and allow further understanding of effects and the mode of action of food-derived serotonergic components on mood, cognition and mechanisms. Ultimately, insight into the concentrations of tryptophan and other serotonergic components in food having beneficial effects on mood and cognition in healthy, but particularly vulnerable, subjects may support well-being in our highly demanding society.
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Simmler C, Pauli GF, Chen SN. Phytochemistry and biological properties of glabridin. Fitoterapia 2013; 90:160-84. [PMID: 23850540 PMCID: PMC3795865 DOI: 10.1016/j.fitote.2013.07.003] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2013] [Revised: 06/27/2013] [Accepted: 07/01/2013] [Indexed: 02/07/2023]
Abstract
Glabridin, a prenylated isoflavonoid of G. glabra L. roots (European licorice, Fabaceae), has been associated with a wide range of biological properties such as antioxidant, anti-inflammatory, anti-atherogenic, regulation of energy metabolism, estrogenic, neuroprotective, anti-osteoporotic, and skin-whitening. While glabridin is one of the most studied licorice flavonoids, a comprehensive literature survey linked to its numerous bioactivities is unavailable. The present review provides a comprehensive description of glabridin as a key chemical and biological marker of G. glabra, by covering both its phytochemical characterization and reported biological activities. Both glabridin and standardized licorice extracts have significant impact on food, dietary supplements (DSs) and cosmetic markets, as evidenced by the amount of available patents and scientific articles since 1976, when glabridin was first described. Nevertheless, a thorough literature survey also reveals that information about the isolation and chemical characterization of this important marker is scattered and less detailed than expected. Accordingly, the first part of this review gathers and provides all analytical and spectroscopic data required for the comprehensive phytochemical characterization of glabridin. The four most frequently described and most relevant bioactivities of glabridin are its anti-inflammatory, anti-atherogenic, estrogenic-like effects, and its capacity to regulate energy metabolism. While all bioactivities reported for glabridin belong to a wide array of targets, its principal biological properties are likely interconnected. To this end, the current state of the literature suggests that the biological activity of glabridin mainly results from its capacity to down-regulate intracellular reactive oxygen species, bind to antioxidant effectors, and act on estrogen receptors, potentially as a plant-based Selective Estrogen Receptor Modulator (phytoSERM).
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Affiliation(s)
- Charlotte Simmler
- UIC/NIH Center for Botanical Dietary Supplements Research, Department of Medicinal Chemistry and Pharmacognosy, College of Pharmacy, University of Illinois at Chicago, 833 S. Wood Street, Chicago, IL, USA.
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25
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Jakovljević M, Milovanović O. FARMAKOLOŠKI IN VITRO MODELI ZA PREDKLINIČKO ISPITIVANJE LEKOVA - PRIMER hSERT TRANSFICIRANIH HUMANIH EMBRIONALNIH ĆELIJA BUBREGA. ACTA MEDICA MEDIANAE 2013. [DOI: 10.5633/amm.2012.0207s] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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26
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Kamal YT, Singh M, Tamboli ET, Parveen R, Zaidi SMA, Ahmad S. Rapid RP-HPLC method for the quantification of glabridin in crude drug and in polyherbal formulation. J Chromatogr Sci 2012; 50:779-84. [PMID: 22661460 DOI: 10.1093/chromsci/bms063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
A simple, economic, selective, precise and robust method has been developed and validated for the analysis of glabridin in crude drugs and polyherbal formulations. Reversed-phase chromatography is performed on a C18 column with water and acetonitrile as mobile phase in gradient elution method at a flow rate of 1 mL/min. Detection is performed at 230 nm and a sharp peak is obtained for glabridin at a retention time of 14.9 ± 0.02 min. Linear regression analysis data for the calibration plot showed a good linear relationship between response and concentration in the range of 1-500 µg/mL; the regression coefficient is 0.9992 and the linear regression equation is y = 26.683x - 142.17. The method is validated for accuracy, precision, reproducibility, robustness and detection and quantification limits, in accordance with International Conference on Harmonization guidelines. Statistical analysis proved that the method is precise, reproducible, selective and accurate for the analysis of glabridin. The proposed, developed and validated high-performance liquid chromatography method for the quantification of glabridin can be used for the quality control and standardization of licorice (Glycyrrhiza glabra Linn.) and different herbal formulations in which licorice is present as a constituent.
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Affiliation(s)
- Y T Kamal
- Bioactive Natural Product Laboratory, Department of Pharmacognosy and Phytochemistry, Faculty of Pharmacy, Hamdard University, New Delhi, India - 110062
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27
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Abstract
Sex steroids exert actions of paramount importance on brain cells. They contribute to shape the central nervous system during embryo development. They modulate the formation and the turnover of the interconnections between neurons. They control the function of glial cells. And they do it through a signaling machinery that is apparently simple, but that hides a level of complexity that has been unveiled only in part. Different receptor isoforms, different interactions between receptors and co-regulators, chains of events originating at the cell membrane and leading to effects in the nucleus (or the other way around) all interact to determine selective modulations of brain cells. All these actions end up in phenomenal effects on brain function that change through adolescence, pregnancy, adulthood, up to menopause and ageing. Many of these actions are relevant for degenerative processes and research may offer soon new strategies to counteract these diseases.
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Affiliation(s)
- Paolo Mannella
- Department of Reproductive Medicine and Child Development, Division of Obstetrics and Gynecology, University of Pisa, Pisa, Italy
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28
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Schaffer S, Halliwell B. Do polyphenols enter the brain and does it matter? Some theoretical and practical considerations. GENES AND NUTRITION 2011; 7:99-109. [PMID: 22012276 DOI: 10.1007/s12263-011-0255-5] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/13/2011] [Accepted: 10/06/2011] [Indexed: 12/26/2022]
Abstract
Although several epidemiological and intervention studies suggest that polyphenols (PPs) and PP-rich foods may improve memory and cognition in animals and humans, PPs' mode of action is only poorly understood. To help distinguish between the different modes of action that have been proposed for PPs, it is obviously important to know how much PPs can accumulate in the brain, if any at all. However, reliable data on PP uptake into the brain of animals are limited as many studies failed to report important control procedures during data acquisition. In this paper, we summarize published data on the penetration of PPs into animal brain and review some hypotheses to explain the biological basis of potentially health-beneficial effects of PPs to the brain. Finally, we highlight promising new approaches, especially those of a hormetic dose-response and gut microbiota-brain interaction, which may allow a better understanding of PPs' mode of action in animals and humans.
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Affiliation(s)
- Sebastian Schaffer
- Department of Biochemistry, Centre for Life Sciences, National University of Singapore, 22 Medical Drive, Singapore, 117456, Singapore
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Chatterjee N, Domoto-Reilly K, Fecci PE, Schwamm LH, Singhal AB. Licorice-associated reversible cerebral vasoconstriction with PRES. Neurology 2011; 75:1939-41. [PMID: 21098410 DOI: 10.1212/wnl.0b013e3181feb299] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Affiliation(s)
- N Chatterjee
- Massachusetts General Hospital, Department of Neurology, WACC 835, 15 Parkman Street, Boston, MA 02114, USA
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Monoamine reuptake inhibition and mood-enhancing potential of a specified oregano extract. Br J Nutr 2010; 105:1150-63. [DOI: 10.1017/s0007114510004940] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A healthy, balanced diet is essential for both physical and mental well-being. Such a diet must include an adequate intake of micronutrients, essential fatty acids, amino acids and antioxidants. The monoamine neurotransmitters, serotonin, dopamine and noradrenaline, are derived from dietary amino acids and are involved in the modulation of mood, anxiety, cognition, sleep regulation and appetite. The capacity of nutritional interventions to elevate brain monoamine concentrations and, as a consequence, with the potential for mood enhancement, has not been extensively evaluated. The present study investigated an extract from oregano leaves, with a specified range of active constituents, identified via an unbiased, high-throughput screening programme. The oregano extract was demonstrated to inhibit the reuptake and degradation of the monoamine neurotransmitters in a dose-dependent manner, and microdialysis experiments in rats revealed an elevation of extracellular serotonin levels in the brain. Furthermore, following administration of oregano extract, behavioural responses were observed in mice that parallel the beneficial effects exhibited by monoamine-enhancing compounds when used in human subjects. In conclusion, these data show that an extract prepared from leaves of oregano, a major constituent of the Mediterranean diet, is brain-active, with moderate triple reuptake inhibitory activity, and exhibits positive behavioural effects in animal models. We postulate that such an extract may be effective in enhancing mental well-being in humans.
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Clotfelter ED, McNitt MM, Carpenter RE, Summers CH. Modulation of monoamine neurotransmitters in fighting fish Betta splendens exposed to waterborne phytoestrogens. FISH PHYSIOLOGY AND BIOCHEMISTRY 2010; 36:933-943. [PMID: 20012186 DOI: 10.1007/s10695-009-9370-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2009] [Accepted: 11/29/2009] [Indexed: 05/28/2023]
Abstract
Endogenous estrogens are known to affect the activity of monoamine neurotransmitters in vertebrate animals, but the effects of exogenous estrogens on neurotransmitters are relatively poorly understood. We exposed sexually mature male fighting fish Betta splendens to environmentally relevant and pharmacological doses of three phytoestrogens that are potential endocrine disruptors in wild fish populations: genistein, equol, and β-sitosterol. We also exposed fish to two doses of the endogenous estrogen 17β-estradiol, which we selected as a positive control because phytoestrogens are putative estrogen mimics. Our results were variable, but the effects were generally modest. Genistein increased dopamine levels in the forebrains of B. splendens at both environmentally relevant and pharmacological doses. The environmentally relevant dose of equol increased dopamine levels in B. splendens forebrains, and the pharmacological dose decreased norepinephrine (forebrain), dopamine (hindbrain), and serotonin (forebrain) levels. The environmentally relevant dose of β-sitosterol decreased norepinephrine and dopamine in the forebrain and hindbrain, respectively. Our results suggest that sources of environmental phytoestrogens, such as runoff or effluent from agricultural fields, wood pulp mills, and sewage treatment plants, have the potential to modulate neurotransmitter activity in free-living fishes in a way that could interfere with normal behavioral processes.
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Toyohira Y, Ueno S, Tsutsui M, Itoh H, Sakai N, Saito N, Takahashi K, Yanagihara N. Stimulatory effects of the soy phytoestrogen genistein on noradrenaline transporter and serotonin transporter activity. Mol Nutr Food Res 2010; 54:516-24. [PMID: 20087855 DOI: 10.1002/mnfr.200900167] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
We examined the effects of genistein, one of the major soy phytoestrogens, on the activity of noradrenaline transporter (NAT) and serotonin transporter. Treatment with genistein (10 nM-10 microM) for 20 min stimulated [(3)H]noradrenaline (NA) uptake by SK-N-SH cells. Genistein also stimulated [(3)H]NA uptake and [(3)H]serotonin uptake by NAT and serotonin transporter transiently transfected COS-7 cells, respectively. Kinetics analysis of the effect of genistein on NAT activity in NAT-transfected COS-7 cells revealed that genistein significantly increased the maximal velocity of NA transport with little or no change in the affinity. Scatchard analysis of [(3)H]nisoxetine binding to NAT-transfected COS-7 cells showed that genistein increased the maximal binding without altering the dissociation constant. Although genistein is also known to be an inhibitor of tyrosine kinases, daidzein, another soy phytoestrogen and an inactive genistein analogue against tyrosine kinases, had little effect on [(3)H]NA uptake by SK-N-SH cells. The stimulatory effects on NAT activity were observed by treatment of tyrphostin 25, an inhibitor of epidermal growth factor receptor tyrosine kinase, whereas orthovanadate, a protein tyrosine phosphatase inhibitor, suppressed [(3)H]NA uptake by NAT-transfected COS-7 cells. These findings suggest that genistein up-regulates the activity of neuronal monoamine transporters probably through processes involving protein tyrosine phosphorylation.
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Affiliation(s)
- Yumiko Toyohira
- Department of Pharmacology, School of Medicine, University of Occupational and Environmental Health, Yahatanishiku, Kitakyushu, Japan.
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Amin KA, Nagy MA. Effect of Carnitine and herbal mixture extract on obesity induced by high fat diet in rats. Diabetol Metab Syndr 2009; 1:17. [PMID: 19835614 PMCID: PMC2772188 DOI: 10.1186/1758-5996-1-17] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/20/2009] [Accepted: 10/16/2009] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Obesity-associated type 2 diabetes is rapidly increasing throughout the world. It is generally recognized that natural products with a long history of safety can modulate obesity. AIM To investigate the development of obesity in response to a high fat diet (HFD) and to estimate the effect of L-carnitine and an Egyptian Herbal mixture formulation (HMF) (consisting of T. chebula, Senae, rhubarb, black cumin, aniseed, fennel and licorice) on bodyweight, food intake, lipid profiles, renal, hepatic, cardiac function markers, lipid Peroxidation, and the glucose and insulin levels in blood and liver tissue in rats. METHOD White male albino rats weighing 80-90 gm, 60 days old. 10 rats were fed a normal basal diet (Cr), 30 rats fed a high-fat diet (HFD) for 14 weeks during the entire study. Rats of the HFD group were equally divided into 3 subgroups each one include 10 rats. The first group received HFD with no supplement (HFD), the 2nd group HFD+L-carnitine and the third group received HFD+HMF. Carnitine and HMF were administered at 10th week (start time for treatments) for 4 weeks.Body weight, lipid profile & renal function (urea, uric acid creatinine) ALT & AST activities, cardiac markers, (LDH, C.K-NAC and MB) the oxidative stress marker reduced glutathione (GSH), and Malondialdehyde (MDA) catalase activity, in addition to glucose, insulin, and insulin resistance in serum & tissues were analyzed. RESULTS Data showed that feeding HFD diet significantly increased final body weight, triglycerides (TG), total cholesterol, & LDL concentration compared with controls, while significantly decreasing HDL; meanwhile treatment with L-carnitine, or HMF significantly normalized the lipid profile.Serum ALT, urea, uric acid, creatinine, LDH, CK-NAC, CK-MB were significantly higher in the high fat group compared with normal controls; and administration of L-carnitine or herbal extract significantly lessened the effect of the HFD. Hyperglycemia, hyperinsulinemia, and high insulin resistance (IR) significantly increased in HFD in comparison with the control group. The treatment with L-carnitine or HMF improved the condition. HFD elevated hepatic MDA and lipid peroxidation associated with reduction in hepatic GSH and catalase activity; whereas administration of L-carnitine or herbal extract significantly ameliorated these hepatic alterations. CONCLUSION HFD induced obesity associated with a disturbed lipid profile, defective antioxidant stability, and high values of IR parameters; this may have implications for the progress of obesity related problems. Treatment with L-carnitine, or HMF extract improved obesity and its associated metabolic problems in different degrees. Also HMF has antioxidant, hypolipidaemic insulin sensitizing effects. Moreover HMF might be a safe combination on the organs whose functions were examined, as a way to surmount the obesity state; and it has a distinct anti-obesity effect.
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Affiliation(s)
- Kamal A Amin
- Biochemistry Department Faculty of Veterinary Medicine, Beni-Suef University, Beni-Suef, Egypt
| | - Mohamed A Nagy
- Chemistry Department Faculty of Science Beni-Suef, Beni-Suef University, Beni-Suef, Egypt
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Yan H, Tian M, Row KH. Selective Solid-Phase Extraction of Glabridin from Licorice Root using Molecularly Imprinted Polymer. SEP SCI TECHNOL 2009. [DOI: 10.1080/01496390802437479] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Asl MN, Hosseinzadeh H. Review of pharmacological effects of Glycyrrhiza sp. and its bioactive compounds. Phytother Res 2008; 22:709-24. [PMID: 18446848 PMCID: PMC7167813 DOI: 10.1002/ptr.2362] [Citation(s) in RCA: 744] [Impact Index Per Article: 46.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2006] [Revised: 08/01/2007] [Accepted: 08/10/2007] [Indexed: 12/15/2022]
Abstract
The roots and rhizomes of licorice (Glycyrrhiza) species have long been used worldwide as a herbal medicine and natural sweetener. Licorice root is a traditional medicine used mainly for the treatment of peptic ulcer, hepatitis C, and pulmonary and skin diseases, although clinical and experimental studies suggest that it has several other useful pharmacological properties such as antiinflammatory, antiviral, antimicrobial, antioxidative, anticancer activities, immunomodulatory, hepatoprotective and cardioprotective effects. A large number of components have been isolated from licorice, including triterpene saponins, flavonoids, isoflavonoids and chalcones, with glycyrrhizic acid normally being considered to be the main biologically active component. This review summarizes the phytochemical, pharmacological and pharmacokinetics data, together with the clinical and adverse effects of licorice and its bioactive components.
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Affiliation(s)
- Marjan Nassiri Asl
- Department of Pharmacology, Faculty of Medicine, Qazvin University of Medical Sciences, Qazvin, IR Iran
| | - Hossein Hosseinzadeh
- Department of Pharmacology, Faculty of Medicine, Qazvin University of Medical Sciences, Qazvin, IR Iran
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Nassiri-As M, Saroukhani S, Zamansolta F. Anticonvulsant Effects of Aqueous Extract of Glycyrrhiza glabra Root in PTZ-Induced Seizure in Mice. INT J PHARMACOL 2007. [DOI: 10.3923/ijp.2007.432.434] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Aoki F, Nakagawa K, Kitano M, Ikematsu H, Nakamura K, Yokota S, Tominaga Y, Arai N, Mae T. Clinical Safety of Licorice Flavonoid Oil (LFO) and Pharmacokinetics of Glabridin in Healthy Humans. J Am Coll Nutr 2007; 26:209-18. [PMID: 17634165 DOI: 10.1080/07315724.2007.10719603] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
OBJECTIVE Licorice flavonoids have various physiological activities such as abdominal fat-lowering, hypoglycemic and antioxidant effects. Licorice flavonoid oil (LFO: Kaneka Glavonoid Rich Oil) is a new dietary ingredient containing licorice flavonoids dissolved in medium-chain triglycerides (MCT). Glabridin is one of the bioactive flavonoids included specifically in licorice Glycyrrhiza glabra L. and is the most abundant flavonoid in LFO. In this study, we assessed the safety of LFO in healthy humans and determined the plasma concentration profile of glabridin as a marker compound. METHODS A single-dose and two multiple-dose studies at low (300 mg), moderate (600 mg) and high (1200 mg) daily doses of LFO were carried out using a placebo-controlled single-blind design. In each study the safety of LFO and the pharmacokinetics of glabridin were assessed. RESULTS Pharmacokinetic analysis in the single-dose study with healthy male subjects (n = 5) showed that glabridin was absorbed and reached the maximum concentration (Cmax) after approximately 4 h (Tmax), and then eliminated relatively slowly in a single phase with a T1/2 of approximately 10 h at all doses. The Cmax and AUC(0-24 h) increased almost linearly with dose. The multiple-dose studies with healthy male and female subjects for 1 week and 4 weeks suggested that plasma glabridin reached steady state levels within 2 weeks with a single daily administration of 300 to 1200 mg/day LFO. In these human studies at three dose levels, there were no clinically noteworthy changes in hematological or related biochemical parameters. All clinical events observed were mild and considered to be unrelated to LFO administration even after repeated administration for 4 weeks. CONCLUSION These studies demonstrated that LFO is safe when administered once daily up to 1200 mg/day. This is the first report on the safety of licorice flavonoids in an oil preparation and the first report on the pharmacokinetics of glabridin in human subjects.
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Affiliation(s)
- Fumiki Aoki
- Functional Food Ingredients Division, Kaneka Corporation, 1-8 Miyamae-machi, Takasago, Hyogo 676-8688, Japan.
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Shanker K, Fatima A, Negi AS, Gupta VK, Darokar MP, Gupta MM, Khanuja SPS. RP-HPLC Method for the Quantitation of Glabridin in Yashti-madhu (Glycyrrhiza glabra). Chromatographia 2007. [DOI: 10.1365/s10337-007-0230-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Aoki F, Honda S, Kishida H, Kitano M, Arai N, Tanaka H, Yokota S, Nakagawa K, Asakura T, Nakai Y, Mae T. Suppression by licorice flavonoids of abdominal fat accumulation and body weight gain in high-fat diet-induced obese C57BL/6J mice. Biosci Biotechnol Biochem 2007; 71:206-14. [PMID: 17213668 DOI: 10.1271/bbb.60463] [Citation(s) in RCA: 97] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
We applied licorice flavonoid oil (LFO) to high-fat diet-induced obese C57BL/6J mice and investigated its effect. LFO contains hydrophobic flavonoids obtained from licorice by extraction with ethanol. The oil is a mixture of medium-chain triglycerides, having glabridin, a major flavonoid of licorice, concentrated to 1.2% (w/w). Obese mice were fed on a high-fat diet containing LFO at 0 (control), 0.5%, 1.0%, or 2.0% for 8 weeks. Compared with mice in the control group, those in the 1% and 2% LFO groups efficiently reduced the weight of abdominal white adipose tissues and body weight gain. A histological examination revealed that the adipocytes became smaller and the fatty degenerative state of the hepatocytes was improved in the 2% LFO group. A DNA microarray analysis of the liver showed up-regulation of those genes for beta-oxidation and down-regulation of those for fatty acid synthesis in the 2% LFO group. These findings suggest that LFO prevented and ameliorated diet-induced obesity via the regulation of lipid metabolism-related gene expression in the liver.
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Affiliation(s)
- Fumiki Aoki
- Functional Food Ingredients Division, Kaneka Corporation, Japan
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ITO C, OI N, HASHIMOTO T, NAKABAYASHI H, AOKI F, TOMINAGA Y, YOKOTA S, HOSOE K, KANAZAWA K. Absorption of Dietary Licorice Isoflavan Glabridin to Blood Circulation in Rats. J Nutr Sci Vitaminol (Tokyo) 2007; 53:358-65. [DOI: 10.3177/jnsv.53.358] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Clotfelter ED, Rodriguez AC. Behavioral changes in fish exposed to phytoestrogens. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2006; 144:833-9. [PMID: 16584819 DOI: 10.1016/j.envpol.2006.02.007] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2005] [Revised: 01/25/2006] [Accepted: 02/05/2006] [Indexed: 05/08/2023]
Abstract
We investigated the behavioral effects of exposure to waterborne phytoestrogens in male fighting fish, Betta splendens. Adult fish were exposed to a range of concentrations of genistein, equol, beta-sitosterol, and the positive control 17beta-estradiol. The following behaviors were measured: spontaneous swimming activity, latency to respond to a perceived intruder (mirror reflection), intensity of aggressive response toward a perceived intruder, probability of constructing a nest in the presence of a female, and the size of the nest constructed. We found few changes in spontaneous swimming activity, the latency to respond to the mirror, and nest size, and modest changes in the probability of constructing a nest. There were significant decreases, however, in the intensity of aggressive behavior toward the mirror following exposure to several concentrations, including environmentally relevant ones, of 17beta-estradiol, genistein, and equol. This suggests that phytoestrogen contamination has the potential to significantly affect the behavior of free-living fishes.
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Tominaga Y, Mae T, Kitano M, Sakamoto Y, Ikematsu H, Nakagawa K. Licorice Flavonoid Oil Effects Body Weight Loss by Reduction of Body Fat Mass in Overweight Subjects. ACTA ACUST UNITED AC 2006. [DOI: 10.1248/jhs.52.672] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Affiliation(s)
- Yuji Tominaga
- Functional Food Ingredients Division, Kaneka Corporation
| | - Tatsumasa Mae
- Functional Food Ingredients Division, Kaneka Corporation
| | - Mitsuaki Kitano
- Life Science Research Laboratories, Life Science RD Center, Kaneka Corporation
| | | | | | - Kaku Nakagawa
- Functional Food Ingredients Division, Kaneka Corporation
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Rybaczyk LA, Bashaw MJ, Pathak DR, Moody SM, Gilders RM, Holzschu DL. An overlooked connection: serotonergic mediation of estrogen-related physiology and pathology. BMC WOMENS HEALTH 2005; 5:12. [PMID: 16368009 PMCID: PMC1327664 DOI: 10.1186/1472-6874-5-12] [Citation(s) in RCA: 74] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 07/12/2005] [Accepted: 12/20/2005] [Indexed: 11/10/2022]
Abstract
BACKGROUND In humans, serotonin has typically been investigated as a neurotransmitter. However, serotonin also functions as a hormone across animal phyla, including those lacking an organized central nervous system. This hormonal action allows serotonin to have physiological consequences in systems outside the central nervous system. Fluctuations in estrogen levels over the lifespan and during ovarian cycles cause predictable changes in serotonin systems in female mammals. DISCUSSION We hypothesize that some of the physiological effects attributed to estrogen may be a consequence of estrogen-related changes in serotonin efficacy and receptor distribution. Here, we integrate data from endocrinology, molecular biology, neuroscience, and epidemiology to propose that serotonin may mediate the effects of estrogen. In the central nervous system, estrogen influences pain transmission, headache, dizziness, nausea, and depression, all of which are known to be a consequence of serotonergic signaling. Outside of the central nervous system, estrogen produces changes in bone density, vascular function, and immune cell self-recognition and activation that are consistent with serotonin's effects. For breast cancer risk, our hypothesis predicts heretofore unexplained observations of the opposing effects of obesity pre- and post-menopause and the increase following treatment with hormone replacement therapy using medroxyprogesterone. SUMMARY Serotonergic mediation of estrogen has important clinical implications and warrants further evaluation.
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Affiliation(s)
- Leszek A Rybaczyk
- Integrated Biomedical Science Graduate Program, The Ohio State University, 1190 Graves Hall, 333 West 10th Avenue, Columbus, OH, 43210-1218, USA
| | - Meredith J Bashaw
- Department of Psychology, 200 Porter Hall, Ohio University, Athens, OH 45701, USA
| | - Dorothy R Pathak
- Departments of Epidemiology and Family Practice, A641 West Fee Hall, Michigan State University, East Lansing, MI48824, USA
| | - Scott M Moody
- Department of Biological Sciences, 318 Irvine Hall, Ohio University, Athens, OH 45701-2939, USA
| | - Roger M Gilders
- School of Recreation and Sport Sciences, E184 Grover Center, Ohio University, Athens, Ohio 45701, USA
| | - Donald L Holzschu
- Department of Biological Sciences, 239 Life Sciences Building, Ohio University, Athens, OH 45701, USA
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Nakagawa K, Kishida H, Arai N, Nishiyama T, Mae T. Licorice flavonoids suppress abdominal fat accumulation and increase in blood glucose level in obese diabetic KK-A(y) mice. Biol Pharm Bull 2005; 27:1775-8. [PMID: 15516721 DOI: 10.1248/bpb.27.1775] [Citation(s) in RCA: 94] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Licorice, the root of the Glycyrrhiza species, is one of the most frequently employed botanicals in traditional medicines. In this study, we investigated the effects of hydrophobic flavonoids from Glycyrrhiza glabra LINNE on abdominal fat accumulation and blood glucose level in obese diabetic KK-A(y) mice. In order to enrich a fraction of hydrophobic flavonoids, licorice flavonoid oil (LFO) was prepared by further extracting licorice ethanolic extract with medium-chain triglycerides (MCT), and adjusting the concentration of glabridin, the major flavonoid of licorice, to 1.2% in oil. KK-A(y) mice aged 6 weeks were assigned to 5 groups (n=6 each), and fed a high-fat diet containing 0 (control), 0.5%, 1%, or 2% LFO, or 0.5% conjugated linoleic acid (CLA) for 4 weeks. Compared with the control, body weight gain and weights of abdominal adipose tissues were suppressed (p<0.05) by feeding the diet containing 2% LFO, and blood glucose levels after 2 and 4 weeks were suppressed by all of the diets containing LFO. Although CLA feeding suppressed (p<0.05) body weight gain, it increased (p<0.05) blood glucose level after 2 weeks compared with the control level. Furthermore, LFO and licorice ethanolic extract stimulated human adipocyte differentiation in vitro. These results indicate that licorice hydrophobic flavonoids have abdominal fat-lowering and hypoglycemic effects, possibly mediated via activation of peroxisome proliferator-activated receptor-gamma (PPAR-gamma).
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Affiliation(s)
- Kaku Nakagawa
- Functional Foods Development Division, Kaneka Corporation, Osaka, Japan
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Zhou S, Koh HL, Gao Y, Gong ZY, Lee EJD. Herbal bioactivation: the good, the bad and the ugly. Life Sci 2004; 74:935-68. [PMID: 14672753 PMCID: PMC7127148 DOI: 10.1016/j.lfs.2003.09.035] [Citation(s) in RCA: 149] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2003] [Accepted: 09/03/2003] [Indexed: 12/19/2022]
Abstract
It has been well established that the formation of reactive metabolites of drugs is associated with drug toxicity. Similarly, there are accumulating data suggesting the role of the formation of reactive metabolites/intermediates through bioactivation in herbal toxicity and carcinogenicity. It has been hypothesized that the resultant reactive metabolites following herbal bioactivation covalently bind to cellular proteins and DNA, leading to toxicity via multiple mechanisms such as direct cytotoxicity, oncogene activation, and hypersensitivity reactions. This is exemplified by aristolochic acids present in Aristolochia spp, undergoing reduction of the nitro group by hepatic cytochrome P450 (CYP1A1/2) or peroxidases in extrahepatic tissues to reactive cyclic nitrenium ion. The latter was capable of reacting with DNA and proteins, resulting in activation of H-ras oncogene, gene mutation and finally carcinogenesis. Other examples are pulegone present in essential oils from many mint species; and teucrin A, a diterpenoid found in germander (Teuchrium chamaedrys) used as an adjuvant to slimming diets. Extensive pulegone metabolism generated p-cresol that was a glutathione depletory, and the furan ring of the diterpenoids in germander was oxidized by CYP3A4 to reactive epoxide which reacts with proteins such as CYP3A and epoxide hydrolase. On the other hand, some herbal/dietary constituents were shown to form reactive intermediates capable of irreversibly inhibiting various CYPs. The resultant metabolites lead to CYP inactivation by chemical modification of the heme, the apoprotein, or both as a result of covalent binding of modified heme to the apoprotein. Some examples include bergamottin, a furanocoumarin of grapefruit juice; capsaicin from chili peppers; glabridin, an isoflavan from licorice root; isothiocyanates found in all cruciferous vegetables; oleuropein rich in olive oil; dially sulfone found in garlic; and resveratrol, a constituent of red wine. CYPs have been known to metabolize more than 95% therapeutic drugs and activate a number of procarcinogens as well. Therefore, mechanism-based inhibition of CYPs may provide an explanation for some reported herb-drug interactions and chemopreventive activity of herbs. Due to the wide use and easy availability of herbal medicines, there is increasing concern about herbal toxicity. The safety and quality of herbal medicine should be ensured through greater research, pharmacovigilance, greater regulatory control and better communication between patients and health professionals.
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Affiliation(s)
- Shufeng Zhou
- Department of Pharmacy, Faculty of Science, National University of Singapore, Singapore, 117543.
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