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Chevalier N, Guillou P, Viguié C, Fini JB, Sachs LM, Michel-Caillet C, Mhaouty-Kodja S. Lithium and endocrine disruption: A concern for human health? ENVIRONMENT INTERNATIONAL 2024; 190:108861. [PMID: 38991890 DOI: 10.1016/j.envint.2024.108861] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2023] [Revised: 06/27/2024] [Accepted: 06/28/2024] [Indexed: 07/13/2024]
Abstract
Lithium is a key medication for the treatment of psychiatric disorders and is also used in various industrial applications (including battery production and recycling). Here, we review published data on the endocrine-disrupting potential of lithium, with a particular focus on the thyroid hormone system. To this end, we used PubMed and Scopus databases to search for, select and review primary research addressing human and animal health endpoints during or after lithium exposure at non-teratogenic doses. Given the key role of thyroid hormones in neurodevelopmental processes, we focused at studies of the neural effects of developmental exposure to lithium in humans and animals. Our results show that lithium meets the World Health Organization's definition of a thyroid hormone system disruptor - particularly when used at therapeutic doses. When combined with knowledge of adverse outcome pathways linking molecular initiating events targeting thyroid function and neurodevelopmental outcomes, the neurodevelopmental data reported in animal experiments prompt us to suggest that lithium influences neurodevelopment. However, we cannot rule out the involvement of additional modes of action (i.e. unrelated to the thyroid hormone system) in the described neural effects. Given the increasing use of lithium salts in new technologies, attention must be paid to this emerging pollutant - particularly with regard to its potential effects at environmental doses on the thyroid hormone system and potential consequences on the developing nervous system.
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Affiliation(s)
| | | | - Catherine Viguié
- Toxalim (Research Centre in Food Toxicology), INRAE, ENVT, INP-Purpan, UPS, Toulouse, France
| | - Jean-Baptiste Fini
- UMR 7221 Physiologie Moléculaire et Adaptation, Département Adaptation du Vivant, CNRS et Muséum National d'Histoire Naturelle. CP32, Paris, France
| | - Laurent M Sachs
- UMR 7221 Physiologie Moléculaire et Adaptation, Département Adaptation du Vivant, CNRS et Muséum National d'Histoire Naturelle. CP32, Paris, France
| | | | - Sakina Mhaouty-Kodja
- Sorbonne Université, CNRS UMR 8246, INSERM U1130, Neuroscience Paris Seine - Institut de Biologie Paris Seine, Paris, France.
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2
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Abbasi N, Mirabzadeh Y, Khesali G, Ebrahimkhani Z, Karimi H, Vaseghi S. Chronic REM sleep deprivation leads to manic- and OCD-related behaviors, and decreases hippocampal BDNF expression in female rats. Psychopharmacology (Berl) 2024; 241:1345-1363. [PMID: 38430395 DOI: 10.1007/s00213-024-06566-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Accepted: 02/22/2024] [Indexed: 03/03/2024]
Abstract
BACKGROUND Rapid-eye movement (REM) sleep deprivation (SD) can induce manic-like behaviors in rodents. On the other hand, lithium, as one of the oldest drugs used in neuropsychiatric disorders, is still one of the best drugs for the treatment and control of bipolar disorder. In this study, we aimed to investigate the role of chronic short-term REM SD in the induction of manic-like behaviors in female rats. METHODS The rats were exposed to REM SD for 14 days (6 hours/day). Lithium was intraperitoneally injected at the doses of 10, 50, and 100 mg/kg. RESULTS REM SD induced hyperactivity and OCD-like behavior, and decreased anxiety, depressive-like behavior, and pain subthreshold. REM SD also impaired passive avoidance memory and decreased hippocampal brain-derived neurotrophic factor (BDNF) expression level. Lithium at the doses of 50 and 100 mg/kg partly and completely abolished these effects, respectively. However, lithium (100 mg/kg) increased BDNF expression level in control and sham REM SD rats with no significant changes in behavior. CONCLUSIONS Chronic short-term REM SD may induce a mania-like model and lead to OCD-like behavior and irritability. In the present study, we demonstrated a putative rodent model of mania induced by chronic REM SD in female rats. We suggest that future studies should examine behavioral and mood changes following chronic REM SD in both sexes. Furthermore, the relationship between manic-like behaviors and chronic REM SD should be investigated.
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Affiliation(s)
- Nahal Abbasi
- Department of Health Psychology, Faculty of Medical Sciences, Karaj Branch, Islamic Azad University, Karaj, Iran
| | - Yasaman Mirabzadeh
- Institute of Biochemistry and Biophysics (IBB), University of Tehran, Tehran, Iran
| | - Golnaz Khesali
- Cognitive Neuroscience Lab, Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran
| | - Zahra Ebrahimkhani
- Cognitive Neuroscience Lab, Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran
| | - Hanie Karimi
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Salar Vaseghi
- Cognitive Neuroscience Lab, Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran.
- Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran.
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Pessoa ALS, Quesada AA, Nóbrega PR, Viana APO, de Oliveira KT, Figueiredo T, Santos S, Kok F. Neuropsychological Characterization of Autosomal Recessive Intellectual Developmental Disorder 59 Associated with IMPA1 (MRT59). Brain Sci 2023; 13:1048. [PMID: 37508980 PMCID: PMC10377093 DOI: 10.3390/brainsci13071048] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 07/05/2023] [Accepted: 07/06/2023] [Indexed: 07/30/2023] Open
Abstract
Biallelic loss of function of IMPA1 causes autosomal recessive intellectual developmental disorder 59 (MRT59, OMIM #617323). MRT59 has been reported to present with significant intellectual disability and disruptive behavior, but little is known about the neurocognitive pattern of those patients. Thus, the aims of this study were: (1) to assess the cognitive profile of these patients, and (2) to evaluate their functional dependence levels. Eighteen adults, aged 37 to 89 years, participated in this study: nine MRT59 patients, five heterozygous carriers and four non-carrier family members. All of them were from a consanguineous family living in Northeast Brazil. All IMPA1 patients had the (c.489_493dupGGGCT) pathogenic variant in homozygosis. For cognitive assessment, the WASI battery was applied in nine MRT59 patients and compared to heterozygous carriers and non-carrier family members. Functional dependence was evaluated using the functional independence measure (FIM). Patients showed moderate to severe intellectual disability and severe functional disabilities. Heterozygous carriers did not differ from non-carriers. MRT59 patients should be followed up by health professionals in an interdisciplinary way to understand their cognitive disabilities and functional needs properly.
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Affiliation(s)
- Andre Luiz Santos Pessoa
- Albert Sabin Children's Hospital, Fortaleza 60410-794, Brazil
- Faculty of Medicine, State University of Ceará (UECE), Fortaleza 60714-903, Brazil
| | - Andrea Amaro Quesada
- The Edson Queiroz Foundation, University of Fortaleza (UNIFOR), Fortaleza 60811-905, Brazil
| | - Paulo Ribeiro Nóbrega
- Hospital Universitário Walter Cantídio-UFC, Fortaleza 60430-372, Brazil
- Faculty of Medicine, Centro Universitário Christus, Fortaleza 60160-230, Brazil
| | | | | | - Thalita Figueiredo
- Faculty of Medicine, Federal University of Alagoas (UFAL), Maceio 57200-000, Brazil
| | - Silvana Santos
- State University of Paraíba (UEPB), Campina Grande 58429-500, Brazil
| | - Fernando Kok
- Department of Neurology, University of São Paulo (USP), São Paulo 05508-220, Brazil
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Bhagar R, Le-Niculescu H, Roseberry K, Kosary K, Daly C, Ballew A, Yard M, Sandusky GE, Niculescu AB. Temporal effects on death by suicide: empirical evidence and possible molecular correlates. DISCOVER MENTAL HEALTH 2023; 3:10. [PMID: 37861857 PMCID: PMC10501025 DOI: 10.1007/s44192-023-00035-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 03/01/2023] [Indexed: 10/21/2023]
Abstract
Popular culture and medical lore have long postulated a connection between full moon and exacerbations of psychiatric disorders. We wanted to empirically analyze the hypothesis that suicides are increased during the period around full moons. We analyzed pre-COVID suicides from the Marion County Coroner's Office (n = 776), and show that deaths by suicide are significantly increased during the week of the full moon (p = 0.037), with older individuals (age ≥ 55) showing a stronger effect (p = 0.019). We also examined in our dataset which hour of the day (3-4 pm, p = 0.035), and which month of the year (September, p = 0.09) show the most deaths by suicide. We had blood samples on a subset of the subjects (n = 45), which enabled us to look at possible molecular mechanisms. We tested a list of top blood biomarkers for suicidality (n = 154) from previous studies of ours 7, to assess which of them are predictive. The biomarkers for suicidality that are predictive of death by suicide during full moon, peak hour of day, and peak month of year, respectively, compared to outside of those periods, appear to be enriched in circadian clock genes. For full moon it is AHCYL2, ACSM3, AK2, and RBM3. For peak hour it is GSK3B, AK2, and PRKCB. For peak month it is TBL1XR1 and PRKCI. Half of these genes are modulated in expression by lithium and by valproate in opposite direction to suicidality, and all of them are modulated by depression and alcohol in the same direction as suicidality. These data suggest that there are temporal effects on suicidality, possibly mediated by biological clocks, pointing to changes in ambient light (timing and intensity) as a therapeutically addressable target to decrease suicidality, that can be coupled with psychiatric pharmacological and addiction treatment preventive interventions.
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Affiliation(s)
- R Bhagar
- Department of Psychiatry, Indiana University School of Medicine, Neuroscience Research Building 200B, 320 W. 15thStreet, Indianapolis, IN, 46202, USA
| | - H Le-Niculescu
- Department of Psychiatry, Indiana University School of Medicine, Neuroscience Research Building 200B, 320 W. 15thStreet, Indianapolis, IN, 46202, USA
| | - K Roseberry
- Department of Psychiatry, Indiana University School of Medicine, Neuroscience Research Building 200B, 320 W. 15thStreet, Indianapolis, IN, 46202, USA
| | - K Kosary
- Department of Psychiatry, Indiana University School of Medicine, Neuroscience Research Building 200B, 320 W. 15thStreet, Indianapolis, IN, 46202, USA
| | - C Daly
- Department of Psychiatry, Indiana University School of Medicine, Neuroscience Research Building 200B, 320 W. 15thStreet, Indianapolis, IN, 46202, USA
| | - A Ballew
- Marion County Coroner's Office, Indianapolis, IN, USA
| | - M Yard
- INBRAIN, Indiana University School of Medicine, Indianapolis, IN, USA
| | - G E Sandusky
- INBRAIN, Indiana University School of Medicine, Indianapolis, IN, USA
| | - A B Niculescu
- Department of Psychiatry, Indiana University School of Medicine, Neuroscience Research Building 200B, 320 W. 15thStreet, Indianapolis, IN, 46202, USA.
- INBRAIN, Indiana University School of Medicine, Indianapolis, IN, USA.
- Indianapolis VA Medical Center, Indianapolis, USA.
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Interaction of lithium and sleep deprivation on memory performance and anxiety-like behavior in male Wistar rats. Behav Brain Res 2022; 428:113890. [DOI: 10.1016/j.bbr.2022.113890] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 03/12/2022] [Accepted: 04/07/2022] [Indexed: 12/28/2022]
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Safety and Efficacy of Combined Low-Dose Lithium and Low-Dose Aspirin: A Pharmacological and Behavioral Proof-of-Concept Study in Rats. Pharmaceutics 2021; 13:pharmaceutics13111827. [PMID: 34834241 PMCID: PMC8619680 DOI: 10.3390/pharmaceutics13111827] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/21/2021] [Accepted: 10/27/2021] [Indexed: 12/12/2022] Open
Abstract
Despite established efficacy in bipolar disorder patients, lithium (Li) therapy has serious side effects, particularly chronic kidney disease. We examined the safety and behavioral effects of combined chronic low-dose aspirin plus low-dose Li in rats to explore the toxicity and therapeutic potential of this treatment. Rats were fed regular or Li-containing food (0.1% [low-dose, LLD-Li] or 0.2% [standard-dose, STD-Li]) for six weeks. Low-dose aspirin (1 mg/kg) was administered alone or together with Li. Renal function and gastric mucosal integrity were assessed. The effects of the combination treatment were evaluated in depression-like and anxiety-like behavioral models. Co-treatment with aspirin did not alter plasma Li levels. Chronic STD-Li treatment resulted in significant polyuria and polydipsia, elevated blood levels of creatinine and cystatin C, and increased levels of kidney nephrin and podocin—all suggestive of impaired renal function. Aspirin co-treatment significantly damped STD-Li-induced impairments in kidney parameters. There were no gastric ulcers or blood loss in any treatment group. Combined aspirin and LLD-Li resulted in a significant increase in sucrose consumption, and in the time spent in the open arms of an elevated plus-maze compared with the LLD-Li only group, suggestive of antidepressant-like and anxiolytic-like effects, respectively. Thus, we demonstrate that low-dose aspirin mitigated the typical renal side effects of STD-Li dose and enhanced the beneficial behavioral effects of LLD-Li therapy without aggravating its toxicity.
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Maloney SE, Creeley CE, Hartman RE, Yuede CM, Zorumski CF, Jevtovic-Todorovic V, Dikranian K, Noguchi KK, Farber NB, Wozniak DF. Using animal models to evaluate the functional consequences of anesthesia during early neurodevelopment. Neurobiol Learn Mem 2019; 165:106834. [PMID: 29550366 PMCID: PMC6179938 DOI: 10.1016/j.nlm.2018.03.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 02/16/2018] [Accepted: 03/13/2018] [Indexed: 12/15/2022]
Abstract
Fifteen years ago Olney and colleagues began using animal models to evaluate the effects of anesthetic and sedative agents (ASAs) on neurodevelopment. The results from ongoing studies indicate that, under certain conditions, exposure to these drugs during development induces an acute elevated apoptotic neurodegenerative response in the brain and long-term functional impairments. These animal models have played a significant role in bringing attention to the possible adverse effects of exposing the developing brain to ASAs when few concerns had been raised previously in the medical community. The apoptotic degenerative response resulting from neonatal exposure to ASAs has been replicated in many studies in both rodents and non-human primates, suggesting that a similar effect may occur in humans. In both rodents and non-human primates, significantly increased levels of apoptotic degeneration are often associated with functional impairments later in life. However, behavioral deficits following developmental ASA exposure have not been consistently reported even when significantly elevated levels of apoptotic degeneration have been documented in animal models. In the present work, we review this literature and propose a rodent model for assessing potential functional deficits following neonatal ASA exposure with special reference to experimental design and procedural issues. Our intent is to improve test sensitivity and replicability for detecting subtle behavioral effects, and thus enhance the translational significance of ASA models.
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Affiliation(s)
- Susan E Maloney
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA; Intellectual and Developmental Disabilities Research Center, Washington University, St. Louis, MO, USA
| | - Catherine E Creeley
- Department of Psychology, The State University of New York at Fredonia, Fredonia, NY 14063, USA
| | - Richard E Hartman
- Department of Psychology, Loma Linda University, 11130 Anderson St., Loma Linda, CA 92354, USA
| | - Carla M Yuede
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA; Department of Neurology, Washington University School of Medicine, St. Louis, MO, USA
| | - Charles F Zorumski
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA; Taylor Family Institute for Innovative Psychiatric Research, Washington University School of Medicine, St. Louis, MO, USA
| | | | - Krikor Dikranian
- Department of Neuroscience, Washington University School of Medicine, St. Louis, MO, USA
| | - Kevin K Noguchi
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA; Intellectual and Developmental Disabilities Research Center, Washington University, St. Louis, MO, USA
| | - Nuri B Farber
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA; Intellectual and Developmental Disabilities Research Center, Washington University, St. Louis, MO, USA
| | - David F Wozniak
- Department of Psychiatry, Washington University School of Medicine, St. Louis, MO, USA; Taylor Family Institute for Innovative Psychiatric Research, Washington University School of Medicine, St. Louis, MO, USA; Intellectual and Developmental Disabilities Research Center, Washington University, St. Louis, MO, USA.
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Use of Prescribed Psychotropics during Pregnancy: A Systematic Review of Pregnancy, Neonatal, and Childhood Outcomes. Brain Sci 2019; 9:brainsci9090235. [PMID: 31540060 PMCID: PMC6770670 DOI: 10.3390/brainsci9090235] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 09/03/2019] [Accepted: 09/09/2019] [Indexed: 12/27/2022] Open
Abstract
This paper reviews the findings from preclinical animal and human clinical research investigating maternal/fetal, neonatal, and child neurodevelopmental outcomes following prenatal exposure to psychotropic drugs. Evidence for the risks associated with prenatal exposure was examined, including teratogenicity, neurodevelopmental effects, neonatal toxicity, and long-term neurobehavioral consequences (i.e., behavioral teratogenicity). We conducted a comprehensive review of the recent results and conclusions of original research and reviews, respectively, which have investigated the short- and long-term impact of drugs commonly prescribed to pregnant women for psychological disorders, including mood, anxiety, and sleep disorders. Because mental illness in the mother is not a benign event, and may itself pose significant risks to both mother and child, simply discontinuing or avoiding medication use during pregnancy may not be possible. Therefore, prenatal exposure to psychotropic drugs is a major public health concern. Decisions regarding drug choice, dose, and duration should be made carefully, by balancing severity, chronicity, and co-morbidity of the mental illness, disorder, or condition against the potential risk for adverse outcomes due to drug exposure. Globally, maternal mental health problems are considered as a major public health challenge, which requires a stronger focus on mental health services that will benefit both mother and child. More preclinical and clinical research is needed in order to make well-informed decisions, understanding the risks associated with the use of psychotropic medications during pregnancy.
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Yousef M, Kavraal Ş, Artış AS, Süer C. Effects of Chronic and Acute Lithium Treatment on the Long-term Potentiation and Spatial Memory in Adult Rats. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2019; 17:233-243. [PMID: 30905123 PMCID: PMC6478079 DOI: 10.9758/cpn.2019.17.2.233] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/04/2018] [Accepted: 07/24/2018] [Indexed: 11/18/2022]
Abstract
Objective Although, accumulating evidence is delineating a neuroprotective and neurotrophic role for lithium (Li), inconsistent findings have also been reported in human studies especially. Moreover, the effects of Li infusion into the hippocampus are still unknown. The aims of this work were (a) to assess whether basal synaptic activity and long-term potentiation (LTP) in the hippocampus are different in regard to intrahippocampal Li infusion; (b) to assess spatial learning and memory in rats chronically treated with LiCO3 in the Morris water maze. Methods Field potentials were recorded form the dentate gyrus, stimulating perforant pathways, in rats chronically (20 mg/kg for 40 days) or acutely treated with LiCO3 and their corresponding control rats. In addition, performance of rats in a Morris water maze was measured to link behaviour of rats to electrophysiological findings. Results LiCO3 infusion into the hippocampus resulted in enhanced LTP, especially in the late phases, but attenuated LTP was observed in rats chronically treated with Li as compared to controls. Li-treated rats equally performed a spatial learning task, but did spend less time in target quadrant than saline-treated rats in Morris water maze. Conclusion Despite most data suggest that Li always yields neuroprotective effects against neuropathological conditions; we concluded that a 40-day treatment of Li disrupts hippocampal synaptic plasticity underlying memory processes, and that these effects of prolonged treatment are not associated with its direct chemical effect, but are likely to be associated with the molecular actions of Li at genetic levels, because its short-term effect preserves synaptic plasticity.
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Affiliation(s)
- Marwa Yousef
- Department of Physiology, Medical Faculty of Erciyes University
| | | | - Ayşe Seda Artış
- Department of Physiology, Medical Faculty of Erciyes University
| | - Cem Süer
- Department of Physiology, Medical Faculty of Erciyes University
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Hanak AS, Chevillard L, Lebeau R, Risède P, Laplanche JL, Benturquia N, Mégarbane B. Neurobehavioral effects of lithium in the rat: Investigation of the effect/concentration relationships and the contribution of the poisoning pattern. Prog Neuropsychopharmacol Biol Psychiatry 2017; 76:124-133. [PMID: 28336491 DOI: 10.1016/j.pnpbp.2017.03.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 03/06/2017] [Accepted: 03/17/2017] [Indexed: 01/29/2023]
Abstract
Severity of lithium poisoning depends on the ingested dose, previous treatment duration and renal function. No animal study has investigated neurobehavioral differences in relation to the lithium poisoning pattern observed in humans, while differences in lithium pharmacokinetics have been reported in lithium-pretreated rats mimicking chronic poisonings with enhanced brain accumulation in rats with renal failure. Our objectives were: 1)-to investigate lithium-related effects in overdose on locomotor activity, anxiety-like behavior, spatial recognition memory and anhedonia in the rat; 2)-to model the relationships between lithium-induced effects on locomotion and plasma, erythrocyte, cerebrospinal fluid and brain concentrations previously obtained according to the poisoning pattern. Open-field, elevated plus-maze, Y-maze and sucrose consumption tests were used. In acutely lithium-poisoned rats, we observed horizontal (p<0.001) and vertical hypolocomotion (p<0.0001), increased anxiety-like behavior (p<0.05) and impaired memory (p<0.01) but no altered hedonic status. Horizontal (p<0.01) and vertical (p<0.001) hypolocomotion peaked more markedly 24h after lithium injection and was more prolonged in acute-on-chronically vs. acutely lithium-poisoned rats. Hypolocomotion in chronically lithium-poisoned rats with impaired renal function did not differ from acutely poisoned rats 24h after the last injection. Interestingly, hypolocomotion/concentration relationships best fitted a sigmoidal Emax model in acute poisoning and a linear regression model linked to brain lithium in acute-on-chronic poisoning. In conclusion, lithium overdose alters rat behavior and consistently induces hypolocomotion which is more marked and prolonged in repeatedly lithium-treated rats. Our data suggest that differences between poisoning patterns regarding lithium-induced hypolocomotion are better explained by the duration of lithium exposure than by its brain accumulation.
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Affiliation(s)
- Anne-Sophie Hanak
- Inserm, UMR-S1144, Paris, France; Paris-Descartes University, Paris, France; Paris-Diderot University, Paris, France
| | - Lucie Chevillard
- Inserm, UMR-S1144, Paris, France; Paris-Descartes University, Paris, France; Paris-Diderot University, Paris, France
| | - Rodolphe Lebeau
- Inserm, UMR-S1144, Paris, France; Paris-Descartes University, Paris, France; Paris-Diderot University, Paris, France
| | - Patricia Risède
- Inserm, UMR-S1144, Paris, France; Paris-Descartes University, Paris, France; Paris-Diderot University, Paris, France
| | - Jean-Louis Laplanche
- Inserm, UMR-S1144, Paris, France; Paris-Descartes University, Paris, France; Paris-Diderot University, Paris, France
| | - Nadia Benturquia
- Inserm, UMR-S1144, Paris, France; Paris-Descartes University, Paris, France; Paris-Diderot University, Paris, France
| | - Bruno Mégarbane
- Inserm, UMR-S1144, Paris, France; Paris-Descartes University, Paris, France; Paris-Diderot University, Paris, France; Assistance Publique - Hôpitaux de Paris, Lariboisière Hospital, Department of Medical and Toxicological Critical Care, Paris, France.
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Ratheesh A, Cotton SM, Davey CG, Adams S, Bechdolf A, Macneil C, Berk M, McGorry PD. Ethical considerations in preventive interventions for bipolar disorder. Early Interv Psychiatry 2017; 11:104-112. [PMID: 27027848 DOI: 10.1111/eip.12340] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2015] [Revised: 01/17/2016] [Accepted: 02/18/2016] [Indexed: 11/28/2022]
Abstract
AIM Early intervention and prevention of serious mental disorders such as bipolar disorder has the promise of decreasing the burden associated with these disorders. With increasing early and preventive intervention efforts among cohorts such as those with a familial risk for bipolar disorder, there is a need to examine the associated ethical concerns. The aim of this review was to examine the ethical issues underpinning the clinical research on pre-onset identification and preventive interventions for bipolar disorder. METHODS We undertook a PubMed search updated to November 2014 incorporating search terms such as bipolar, mania, hypomania, ethic*(truncated), early intervention, prevention, genetic and family. RESULTS Fifty-six articles that were identified by this method as well as other relevant articles were examined within a framework of ethical principles including beneficence, non-maleficence, respect for autonomy and justice. The primary risks associated with research and clinical interventions include stigma and labelling, especially among familial high-risk youth. Side effects from interventions are another concern. The benefits of preventive or early interventions were in the amelioration of symptoms as well as the possibility of minimizing disability, cognitive impairment and progression of the illness. Supporting the autonomy of individuals and improving access to stigma-free care may help moderate the potential challenges associated with the risks of interventions. CONCLUSIONS Concerns about the risks of early identification and pre-onset interventions should be balanced against the potential benefits, the individuals' right to choice and by improving availability of services that balance such dilemmas.
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Affiliation(s)
- Aswin Ratheesh
- Orygen, The National Centre for Excellence in Youth Mental Health, Parkville, Victoria, Australia.,Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Susan M Cotton
- Orygen, The National Centre for Excellence in Youth Mental Health, Parkville, Victoria, Australia.,Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Christopher G Davey
- Orygen, The National Centre for Excellence in Youth Mental Health, Parkville, Victoria, Australia.,Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Sophie Adams
- Orygen, The National Centre for Excellence in Youth Mental Health, Parkville, Victoria, Australia
| | - Andreas Bechdolf
- Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia.,Department of Psychiatry and Psychotherapy, University of Cologne, Cologne, Germany.,Department of Psychiatry, Psychotherapy and Psychosomatics, Vivantes Hospital am Urban and Vivantes Hospital im Friedrichshain, Charite Universitätsmedizin, Berlin, Germany
| | - Craig Macneil
- Orygen, The National Centre for Excellence in Youth Mental Health, Parkville, Victoria, Australia.,Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
| | - Michael Berk
- Orygen, The National Centre for Excellence in Youth Mental Health, Parkville, Victoria, Australia.,Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia.,Department of Psychiatry, Deakin University, Geelong, Victoria, Australia.,IMPACT Strategic Research Centre, Geelong, Victoria, Australia
| | - Patrick D McGorry
- Orygen, The National Centre for Excellence in Youth Mental Health, Parkville, Victoria, Australia.,Centre for Youth Mental Health, The University of Melbourne, Parkville, Victoria, Australia
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12
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Roux M, Dosseto A. From direct to indirect lithium targets: a comprehensive review of omics data. Metallomics 2017; 9:1326-1351. [DOI: 10.1039/c7mt00203c] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Metal ions are critical to a wide range of biological processes.
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Affiliation(s)
| | - Anthony Dosseto
- Wollongong Isotope Geochronology Laboratory
- School of Earth & Environmental Sciences
- University of Wollongong
- Wollongong
- Australia
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13
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Młyniec K, Gaweł M, Doboszewska U, Starowicz G, Nowak G. The Role of Elements in Anxiety. VITAMINS AND HORMONES 2016; 103:295-326. [PMID: 28061974 DOI: 10.1016/bs.vh.2016.09.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Elements (bioelements) are necessary factors required for the physiological function of organisms. They are critically involved in fundamental processes of life. Extra- and intracellular message and metabolic pathway factors as well as structural components include one or many elements in their functional structure. Recent years have seen an intensification in terms of knowledge gained about the roles of elements in anxiety disorders. In this chapter we present a review of the most important current data concerning the involvement of zinc, magnesium, copper, lithium, iron, and manganese, and their deficiency, in the pathophysiology and treatment of anxiety.
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Affiliation(s)
- K Młyniec
- Faculty of Pharmacy, Jagiellonian University Medical College, Krakow, Poland.
| | - M Gaweł
- Faculty of Pharmacy, Jagiellonian University Medical College, Krakow, Poland
| | - U Doboszewska
- Faculty of Pharmacy, Jagiellonian University Medical College, Krakow, Poland
| | - G Starowicz
- Faculty of Pharmacy, Jagiellonian University Medical College, Krakow, Poland
| | - G Nowak
- Faculty of Pharmacy, Jagiellonian University Medical College, Krakow, Poland
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14
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Figueiredo T, Melo US, Pessoa ALS, Nobrega PR, Kitajima JP, Rusch H, Vaz F, Lucato LT, Zatz M, Kok F, Santos S. A homozygous loss-of-function mutation in inositol monophosphatase 1 (IMPA1) causes severe intellectual disability. Mol Psychiatry 2016; 21:1125-9. [PMID: 26416544 DOI: 10.1038/mp.2015.150] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/05/2015] [Revised: 08/17/2015] [Accepted: 08/19/2015] [Indexed: 11/09/2022]
Abstract
The genetic basis of intellectual disability (ID) is extremely heterogeneous and relatively little is known about the role of autosomal recessive traits. In a field study performed in a highly inbred area of Northeastern Brazil, we identified and investigated a large consanguineous family with nine adult members affected by severe ID associated with disruptive behavior. The Genome-Wide Human SNP Array 6.0 microarray was used to determine regions of homozygosity by descent from three affected and one normal family member. Whole-exome sequencing (WES) was performed in one affected patient using the Nextera Rapid-Capture Exome kit and Illumina HiSeq2500 system to identify the causative mutation. Potentially deleterious variants detected in regions of homozygosity by descent and not present in either 59 723 unrelated individuals from the Exome Aggregation Consortium (Browser) or 1484 Brazilians were subject to further scrutiny and segregation analysis by Sanger sequencing. Homozygosity-by-descent analysis disclosed a 20.7-Mb candidate region at 8q12.3-q21.2 (lod score: 3.11). WES identified a homozygous deleterious variant in inositol monophosphatase 1 (IMPA1) (NM_005536), consisting of a 5-bp duplication (c.489_493dupGGGCT; chr8: 82,583,247; GRCh37/hg19) leading to a frameshift and a premature stop codon (p.Ser165Trpfs*10) that cosegregated with the disease in 26 genotyped family members. The IMPA1 gene product is responsible for the final step of biotransformation of inositol triphosphate and diacylglycerol, two second messengers. Despite its many physiological functions, no clinical phenotype has been assigned to this gene dysfunction to date. Additionally, IMPA1 is the main target of lithium, a drug that is at the forefront of treatment for bipolar disorder.
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Affiliation(s)
- T Figueiredo
- Northeast Biotechnology Network (RENORBIO), Federal University of Paraiba (UFPB), Joao Pessoa, Brazil.,Department of Biology, Paraiba State University (UEPB), Campina Grande, Brazil.,Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of Sao Paulo (USP), Sao Paulo, Brazil
| | - U S Melo
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of Sao Paulo (USP), Sao Paulo, Brazil
| | - A L S Pessoa
- Department of Neurology, School of Medicine, University of Sao Paulo (USP), Sao Paulo, Brazil.,School of Medicine, Fortaleza University (UNIFOR), Fortaleza, Brazil
| | - P R Nobrega
- Department of Neurology, School of Medicine, University of Sao Paulo (USP), Sao Paulo, Brazil
| | | | - H Rusch
- Laboratory of Genetic Metabolic Diseases, Department of Clinical Chemistry, University of Amsterdam, Academic Medical Center (AMC), Amsterdam, The Netherlands
| | - F Vaz
- Laboratory of Genetic Metabolic Diseases, Department of Clinical Chemistry, University of Amsterdam, Academic Medical Center (AMC), Amsterdam, The Netherlands
| | - L T Lucato
- Institute of Radiology, School of Medicine, University of Sao Paulo (USP), Sao Paulo, Brazil
| | - M Zatz
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of Sao Paulo (USP), Sao Paulo, Brazil
| | - F Kok
- Department of Genetics and Evolutionary Biology, Human Genome and Stem Cell Research Center, Biosciences Institute, University of Sao Paulo (USP), Sao Paulo, Brazil.,Department of Neurology, School of Medicine, University of Sao Paulo (USP), Sao Paulo, Brazil.,Mendelics Genomic Analysis, Sao Paulo, Brazil
| | - S Santos
- Northeast Biotechnology Network (RENORBIO), Federal University of Paraiba (UFPB), Joao Pessoa, Brazil.,Department of Biology, Paraiba State University (UEPB), Campina Grande, Brazil
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15
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Lee RS, Pirooznia M, Guintivano J, Ly M, Ewald ER, Tamashiro KL, Gould TD, Moran TH, Potash JB. Search for common targets of lithium and valproic acid identifies novel epigenetic effects of lithium on the rat leptin receptor gene. Transl Psychiatry 2015; 5:e600. [PMID: 26171981 PMCID: PMC5068731 DOI: 10.1038/tp.2015.90] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2015] [Revised: 05/21/2015] [Accepted: 06/01/2015] [Indexed: 12/24/2022] Open
Abstract
Epigenetics may have an important role in mood stabilizer action. Valproic acid (VPA) is a histone deacetylase inhibitor, and lithium (Li) may have downstream epigenetic actions. To identify genes commonly affected by both mood stabilizers and to assess potential epigenetic mechanisms that may be involved in their mechanism of action, we administered Li (N = 12), VPA (N = 12), and normal chow (N = 12) to Brown Norway rats for 30 days. Genomic DNA and mRNA were extracted from the hippocampus. We used the mRNA to perform gene expression analysis on Affymetrix microarray chips, and for genes commonly regulated by both Li and VPA, we validated expression levels using quantitative real-time PCR. To identify potential mechanisms underlying expression changes, genomic DNA was bisulfite treated for pyrosequencing of key CpG island 'shores' and promoter regions, and chromatin was prepared from both hippocampal tissue and a hippocampal-derived cell line to assess modifications of histones. For most genes, we found little evidence of DNA methylation changes in response to the medications. However, we detected histone H3 methylation and acetylation in the leptin receptor gene, Lepr, following treatment with both drugs. VPA-mediated effects on histones are well established, whereas the Li effects constitute a novel mechanism of transcriptional derepression for this drug. These data support several shared transcriptional targets of Li and VPA, and provide evidence suggesting leptin signaling as an epigenetic target of two mood stabilizers. Additional work could help clarify whether leptin signaling in the brain has a role in the therapeutic action of Li and VPA in bipolar disorder.
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Affiliation(s)
- R S Lee
- Johns Hopkins Mood Disorders Center of the Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA,Johns Hopkins Mood Disorders Center of the Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, 720 Rutland Avenue, Ross 1068, Baltimore, MD 21205, USA. E-mail:
| | - M Pirooznia
- Johns Hopkins Mood Disorders Center of the Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - J Guintivano
- Johns Hopkins Mood Disorders Center of the Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA,Graduate Program in Human Genetics, University of Maryland School of Medicine, Baltimore, MD, USA
| | - M Ly
- Johns Hopkins Mood Disorders Center of the Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - E R Ewald
- Johns Hopkins Mood Disorders Center of the Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - K L Tamashiro
- Johns Hopkins Mood Disorders Center of the Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - T D Gould
- Departments of Psychiatry, Pharmacology, and Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, USA
| | - T H Moran
- Johns Hopkins Mood Disorders Center of the Department of Psychiatry and Behavioral Sciences, Johns Hopkins School of Medicine, Baltimore, MD, USA
| | - J B Potash
- Department of Psychiatry, University of Iowa Carver College of Medicine, Iowa City, IA, USA
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McNamara RK, Strawn JR, Chang KD, DelBello MP. Interventions for Youth at High Risk for Bipolar Disorder and Schizophrenia. Child Adolesc Psychiatr Clin N Am 2012; 21:739-51. [PMID: 23040899 PMCID: PMC3466439 DOI: 10.1016/j.chc.2012.07.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Increasing evidence from retrospective and prospective studies is beginning to validate criteria to identify individuals at high risk for developing bipolar disorder or schizophrenia. In parallel, intervention trials are evaluating the efficacy and tolerability of pharmacologic and nonpharmacologic approaches for the treatment of subthreshold and possibly prodromal presentations in these high-risk populations with the ultimate objective of mitigating illness progression. This article reviews current evidence for candidate interventions for high-risk individuals to guide future research in this rapidly emerging field. A clinical vignette describing antidepressant-induced manic symptoms in an adolescent with a family history of bipolar disorder is provided.
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Affiliation(s)
- Robert K. McNamara
- Department of Psychiatry and Behavioral Neuroscience, Division of Bipolar Disorders Research, University of Cincinnati College of Medicine, Cincinnati, OH 45267
| | - Jeffrey R. Strawn
- Department of Psychiatry and Behavioral Neuroscience, Division of Bipolar Disorders Research, University of Cincinnati College of Medicine, Cincinnati, OH 45267
| | - Kiki D. Chang
- Stanford Pediatric Bipolar Disorders Program, Stanford University School of Medicine, Department of Psychiatry, 401 Quarry Road, Stanford, CA 94305, USA
| | - Melissa P. DelBello
- Department of Psychiatry and Behavioral Neuroscience, Division of Bipolar Disorders Research, University of Cincinnati College of Medicine, Cincinnati, OH 45267,To whom correspondence should be addressed: Melissa P. DelBello, MD, MS, Department of Psychiatry, University of Cincinnati College of Medicine, 260 Stetson St. Suite 3200 ML 559, Cincinnati OH 45219, Telephone: (513) 558-4489, Fax: (513) 558-3399,
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17
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Nesher E, Gross M, Lisson S, Tikhonov T, Yadid G, Pinhasov A. Differential responses to distinct psychotropic agents of selectively bred dominant and submissive animals. Behav Brain Res 2012; 236:225-235. [PMID: 22982068 DOI: 10.1016/j.bbr.2012.08.040] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Revised: 08/24/2012] [Accepted: 08/26/2012] [Indexed: 12/14/2022]
Abstract
Dominance and submissiveness are two opposite poles of behavior representing important functional elements in the development of social interactions. We previously demonstrated the inheritability of these traits by selective breeding based upon the dominant-submissive relationships (DSR) food competition paradigm. Continued multigenerational behavioral selection of Sabra mice yielded animal populations with strong and stable features of dominance and submissiveness. We found that these animals react differentially to stressogenic triggers, antidepressants and mood stabilizing agents. The anxiolytic compound diazepam (1.5mg/kg, i.p.) reduced anxiety-like behavior of submissive animals, but showed anxiogenic effects among dominant animals. In the Forced Swim test, the antidepressant paroxetine (1, 3 and 10mg/kg, i.p.) markedly reduced immobility of submissive animals, demonstrating antidepressant-like effect. In contrast, when administered to dominant animals, paroxetine caused extreme (frenetic) activity. The mood stabilizer lithium (0.4%, p.o.) selectively influenced dominant mice, without affecting the behavior of submissive animals. In summary, we describe here two distinct animal populations possessing strong dominant and submissive phenotypes. We suggest that these populations hold potential as tools for studying the molecular basis and pharmacogenetics of dominant and submissive behavior.
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Affiliation(s)
- Elimelech Nesher
- Department of Molecular Biology, Ariel University Center, Ariel, Israel; Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel
| | - Moshe Gross
- Department of Molecular Biology, Ariel University Center, Ariel, Israel; Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel
| | - Serah Lisson
- Department of Molecular Biology, Ariel University Center, Ariel, Israel; Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel
| | - Tatiana Tikhonov
- Department of Molecular Biology, Ariel University Center, Ariel, Israel
| | - Gal Yadid
- Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel
| | - Albert Pinhasov
- Department of Molecular Biology, Ariel University Center, Ariel, Israel.
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18
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van der Lugt NM, van de Maat JS, van Kamp IL, Knoppert-van der Klein EAM, Hovens JGFM, Walther FJ. Fetal, neonatal and developmental outcomes of lithium-exposed pregnancies. Early Hum Dev 2012; 88:375-8. [PMID: 22000820 DOI: 10.1016/j.earlhumdev.2011.09.013] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2011] [Revised: 09/14/2011] [Accepted: 09/27/2011] [Indexed: 11/19/2022]
Abstract
INTRODUCTION Many women with a bipolar disorder are of reproductive age and will need to continue lithium treatment during pregnancy. The teratogenic and perinatal effects of lithium are known, but not the long-term effects of lithium on neurodevelopment of the children. This study investigates growth, neurological, cognitive and behavioral development of children exposed to lithium in utero. METHOD In an observational retrospective cohort study 15 children who were exposed to lithium in utero were investigated at 3-15 years of age. Neurological development was tested using the Hempel or Touwen examination. Cognitive development was assessed with the Bayley Scales of Infant Development III, Wechsler Preschool and Primary Scale of Intelligence or the Wechsler Intelligence Scale for Children. Parents completed the Child Behavior Checklist to assess behavioral development and a standard questionnaire about general development of the child since birth. RESULTS One child had signs of a minor neurological dysfunction, but without further clinical implications. The results of the cognitive tests were within normal limits, although most children had lower scores on the performance IQ subtest. Growth, behavior and general development were within the normal range. CONCLUSIONS Continuing lithium therapy during pregnancy did not cause adverse effects on growth, neurological, cognitive and behavioral development of exposed children.
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19
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Le-Niculescu H, Balaraman Y, Patel SD, Ayalew M, Gupta J, Kuczenski R, Shekhar A, Schork N, Geyer MA, Niculescu AB. Convergent functional genomics of anxiety disorders: translational identification of genes, biomarkers, pathways and mechanisms. Transl Psychiatry 2011; 1:e9. [PMID: 22832404 PMCID: PMC3309477 DOI: 10.1038/tp.2011.9] [Citation(s) in RCA: 62] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Anxiety disorders are prevalent and disabling yet understudied from a genetic standpoint, compared with other major psychiatric disorders such as bipolar disorder and schizophrenia. The fact that they are more common, diverse and perceived as embedded in normal life may explain this relative oversight. In addition, as for other psychiatric disorders, there are technical challenges related to the identification and validation of candidate genes and peripheral biomarkers. Human studies, particularly genetic ones, are susceptible to the issue of being underpowered, because of genetic heterogeneity, the effect of variable environmental exposure on gene expression, and difficulty of accrual of large, well phenotyped cohorts. Animal model gene expression studies, in a genetically homogeneous and experimentally tractable setting, can avoid artifacts and provide sensitivity of detection. Subsequent translational integration of the animal model datasets with human genetic and gene expression datasets can ensure cross-validatory power and specificity for illness. We have used a pharmacogenomic mouse model (involving treatments with an anxiogenic drug--yohimbine, and an anti-anxiety drug--diazepam) as a discovery engine for identification of anxiety candidate genes as well as potential blood biomarkers. Gene expression changes in key brain regions for anxiety (prefrontal cortex, amygdala and hippocampus) and blood were analyzed using a convergent functional genomics (CFG) approach, which integrates our new data with published human and animal model data, as a translational strategy of cross-matching and prioritizing findings. Our work identifies top candidate genes (such as FOS, GABBR1, NR4A2, DRD1, ADORA2A, QKI, RGS2, PTGDS, HSPA1B, DYNLL2, CCKBR and DBP), brain-blood biomarkers (such as FOS, QKI and HSPA1B), pathways (such as cAMP signaling) and mechanisms for anxiety disorders--notably signal transduction and reactivity to environment, with a prominent role for the hippocampus. Overall, this work complements our previous similar work (on bipolar mood disorders and schizophrenia) conducted over the last decade. It concludes our programmatic first pass mapping of the genomic landscape of the triad of major psychiatric disorder domains using CFG, and permitted us to uncover the significant genetic overlap between anxiety and these other major psychiatric disorders, notably the under-appreciated overlap with schizophrenia. PDE10A, TAC1 and other genes uncovered by our work provide a molecular basis for the frequently observed clinical co-morbidity and interdependence between anxiety and other major psychiatric disorders, and suggest schizo-anxiety as a possible new nosological domain.
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Affiliation(s)
- H Le-Niculescu
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Y Balaraman
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - S D Patel
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - M Ayalew
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA,Indianapolis VA Medical Center, Indianapolis, IN, USA
| | - J Gupta
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - R Kuczenski
- Department of Psychiatry, University of California at San Diego, La Jolla, CA, USA
| | - A Shekhar
- Indiana Clinical Translational Science Institute, Indianapolis, IN, USA
| | - N Schork
- Scripps Translational Science Institute, La Jolla, CA, USA
| | - M A Geyer
- Department of Psychiatry, University of California at San Diego, La Jolla, CA, USA
| | - A B Niculescu
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA,Indianapolis VA Medical Center, Indianapolis, IN, USA,Department of Psychiatry, Indiana University School of Medicine, 791 Union Drive, Indianapolis, IN 46202, USA. E-mail:
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20
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Le-Niculescu H, Case NJ, Hulvershorn L, Patel SD, Bowker D, Gupta J, Bell R, Edenberg HJ, Tsuang MT, Kuczenski R, Geyer MA, Rodd ZA, Niculescu AB. Convergent functional genomic studies of ω-3 fatty acids in stress reactivity, bipolar disorder and alcoholism. Transl Psychiatry 2011; 1:e4. [PMID: 22832392 PMCID: PMC3309466 DOI: 10.1038/tp.2011.1] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Accepted: 02/24/2011] [Indexed: 12/28/2022] Open
Abstract
Omega-3 fatty acids have been proposed as an adjuvant treatment option in psychiatric disorders. Given their other health benefits and their relative lack of toxicity, teratogenicity and side effects, they may be particularly useful in children and in females of child-bearing age, especially during pregnancy and postpartum. A comprehensive mechanistic understanding of their effects is needed. Here we report translational studies demonstrating the phenotypic normalization and gene expression effects of dietary omega-3 fatty acids, specifically docosahexaenoic acid (DHA), in a stress-reactive knockout mouse model of bipolar disorder and co-morbid alcoholism, using a bioinformatic convergent functional genomics approach integrating animal model and human data to prioritize disease-relevant genes. Additionally, to validate at a behavioral level the novel observed effects on decreasing alcohol consumption, we also tested the effects of DHA in an independent animal model, alcohol-preferring (P) rats, a well-established animal model of alcoholism. Our studies uncover sex differences, brain region-specific effects and blood biomarkers that may underpin the effects of DHA. Of note, DHA modulates some of the same genes targeted by current psychotropic medications, as well as increases myelin-related gene expression. Myelin-related gene expression decrease is a common, if nonspecific, denominator of neuropsychiatric disorders. In conclusion, our work supports the potential utility of omega-3 fatty acids, specifically DHA, for a spectrum of psychiatric disorders such as stress disorders, bipolar disorder, alcoholism and beyond.
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Affiliation(s)
- H Le-Niculescu
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - N J Case
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - L Hulvershorn
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - S D Patel
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
- Indianapolis VA Medical Center, Indianapolis, IN, USA
| | - D Bowker
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - J Gupta
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - R Bell
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - H J Edenberg
- Department of Biochemistry and Molecular Biology, Indiana University School of Medicine, Indianapolis, IN, USA
| | - M T Tsuang
- Department of Psychiatry, UC San Diego, La Jolla, CA, USA
| | - R Kuczenski
- Department of Psychiatry, UC San Diego, La Jolla, CA, USA
| | - M A Geyer
- Department of Psychiatry, UC San Diego, La Jolla, CA, USA
| | - Z A Rodd
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
| | - A B Niculescu
- Department of Psychiatry, Indiana University School of Medicine, Indianapolis, IN, USA
- Indianapolis VA Medical Center, Indianapolis, IN, USA
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McNamara RK, Nandagopal JJ, Strakowski SM, DelBello MP. Preventative strategies for early-onset bipolar disorder: towards a clinical staging model. CNS Drugs 2010; 24:983-96. [PMID: 21090835 DOI: 10.2165/11539700-000000000-00000] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
Bipolar disorder is a chronic and typically recurring illness with significant psychosocial morbidity. Although the aetiological factors that contribute to the onset of mania, and by definition bipolar I disorder, are poorly understood, it most commonly occurs during the adolescent period. Putative risk factors for developing bipolar disorder include having a first-degree relative with a mood disorder, physical/sexual abuse and other psychosocial stressors, substance use disorders, psychostimulant and antidepressant medication exposure and omega-3 fatty acid deficiency. Prominent prodromal clinical features include episodic symptoms of depression, anxiety, hypomania, anger/irritability and disturbances in sleep and attention. Because prodromal mood symptoms precede the onset of mania by an average of 10 years, and there is low specificity of risk factors and prodromal features for mania, interventions initiated prior to onset of the disorder (primary prevention) or early in the course of the disorder (early or secondary prevention) must be safe and well tolerated upon long-term exposure. Indeed, antidepressant and psychostimulant medications may precipitate the onset of mania. Although mood stabilizers and atypical antipsychotic medications exhibit efficacy in youth with bipolar I disorder, their efficacy for the treatment of prodromal mood symptoms is largely unknown. Moreover, mood stabilizers and atypical antipsychotics are associated with prohibitive treatment-emergent adverse effects. In contrast, omega-3 fatty acids have neurotrophic and neuroprotective properties and have been found to be efficacious, safe and well tolerated in the treatment of manic and depressive symptoms in children and adolescents. Together, extant evidence endorses a clinical staging model in which subjects at elevated risk for developing mania are treated with safer interventions (i.e. omega-3 fatty acids, family-focused therapy) in the prodromal phase, followed by pharmacological agents with potential adverse effects for nonresponsive cases and secondary prevention. This approach warrants evaluation in prospective longitudinal trials in youth determined to be at ultra-high risk for bipolar I disorder.
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Affiliation(s)
- Robert K McNamara
- Department of Psychiatry, Division of Bipolar Disorders Research, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
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22
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Pedrosa E, Shah A, Tenore C, Capogna M, Villa C, Guo X, Zheng D, Lachman HM. β-catenin promoter ChIP-chip reveals potential schizophrenia and bipolar disorder gene network. J Neurogenet 2010; 24:182-93. [PMID: 20615089 DOI: 10.3109/01677063.2010.495182] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Therapeutic concentrations of lithium salts inhibit glycogen synthase kinase 3 beta (GSK3β) and phosphoinositide (PI) signaling suggesting that abnormal activation of these pathways could be a factor in the pathophysiology of bipolar disorder (BD). Involvement of these pathways is also supported by recent genome-wide association studies (GWASs). One way investigators have investigated the molecular basis of BD and the therapeutic action of lithium is by microarray expression studies, since both GSK3β- and PI-mediated signal transduction pathways are coupled to transcriptional activation and inhibition. However, expression profiling has some limitations and investigators cannot use the approach to analyze fetal brain tissue, arguably the most relevant biological structure related to the development of genetically based psychiatric disorders. To address these shortcomings, the authors have taken a novel approach using chromatin immunoprecipitation-enriched material annealed to microarrays (ChIP-chip) targeting genes in fetal brain tissue bound by β-catenin, a transcription factor that is directly regulated by GSK3β. The promoters for 640 genes were found to be bound by β-catenin, many of which are known schizophrenia (SZ), autism spectrum disorder (ASD), and BD candidates, including CACNA1B, NRNG, SNAP29, FGFR1, PCDH9, and nine others identified in recently published GWASs and genome-wide searches for copy number variants (CNVs). The findings suggest that seemingly disparate candidate genes for SZ and BD can be incorporated into a common molecular network revolving around GSK3β/β-catenin signaling. In addition, the finding that a putative lithium-responsive pathway may influence a subgroup of SZ and ASD candidate genes could have therapeutic implications.
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Affiliation(s)
- Erika Pedrosa
- Department of Psychiatry and Behavioral Sciences, Division of Basic Research, Albert Einstein College of Medicine, Bronx, New York 10461, USA
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23
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The role of lithium in modulation of brain genes: relevance for aetiology and treatment of bipolar disorder. Biochem Soc Trans 2009; 37:1090-5. [PMID: 19754458 DOI: 10.1042/bst0371090] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Bipolar disorder is a debilitating disorder of the brain with a lifetime prevalence of 1.0% for bipolar I, 1.1% for bipolar II disorder and 2.4-4.7% for subthreshold bipolar disorder. Medications, including lithium, have demonstrated efficacy in the treatment of bipolar disorder, but their molecular targets and mode of action are largely unknown. A few studies have begun to shed light on potential targets of lithium treatment that may be involved in lithium's therapeutic effect. We have recently conducted a microarray study of rat frontal cortex following chronic treatment (21 days) with lithium. Chronic treatment with lithium led to a significant (at least 1.5-fold) down-regulation of 151 genes and up-regulation of 57 genes. We discuss our results in the context of previous microarray studies involving lithium and gene-association studies to identify key genes associated with chronic lithium treatment. A number of genes associated with bipolar disorder, including Comt (catechol-O-methyltransferase), Vapa (vesicle-associated membrane protein-associated protein A), Dtnb (dystrobrevin beta) and Pkd1 (polycystic kidney disease 1), were significantly altered in our microarray dataset along with genes associated with synaptic transmission, apoptosis and transport among other functions.
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24
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Amygdala volume in depressed patients with bipolar disorder assessed using high resolution 3T MRI: the impact of medication. Neuroimage 2009; 49:2966-76. [PMID: 19931399 DOI: 10.1016/j.neuroimage.2009.11.025] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2009] [Revised: 11/06/2009] [Accepted: 11/11/2009] [Indexed: 12/24/2022] Open
Abstract
MRI-based reports of both abnormally increased and decreased amygdala volume in bipolar disorder (BD) have surfaced in the literature. Two major methodological weaknesses characterizing extant studies are treatment with medication and inaccurate segmentation of the amygdala due to limitations in spatial and tissue contrast resolution. Here, we acquired high-resolution images (voxel size=0.55 x 0.55 x 0.60 mm) using a GE 3T MRI scanner, and a pulse sequence optimized for tissue contrast resolution. The amygdala was manually segmented by one rater blind to diagnosis, using coronal images. Eighteen unmedicated (mean medication-free period 11+/-10 months) BD subjects were age and gender matched with 18 healthy controls, and 17 medicated (lithium or divalproex) subjects were matched to 17 different controls. The unmedicated BD patients displayed smaller left and right amygdala volumes than their matched control group (p<0.01). Conversely, the BD subjects undergoing medication treatment showed a trend towards greater amygdala volumes than their matched HC sample (p=0.051). Right and left amygdala volumes were larger (p<0.05) or trended larger, respectively, in the medicated BD sample compared with the unmedicated BD sample. The two control groups did not differ from each other in either left or right amygdala volume. BD patients treated with lithium have displayed increased gray matter volume of the cortex and hippocampus relative to untreated BD subjects in previous studies. Here we extend these results to the amygdala. We raise the possibility that neuroplastic changes in the amygdala associated with BD are moderated by some mood stabilizing medications.
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Lima TZ, Blanco MM, Santos Júnior JGD, Coelho CT, Mello LE. Staying at the crossroads: assessment of the potential of serum lithium monitoring in predicting an ideal lithium dose. BRAZILIAN JOURNAL OF PSYCHIATRY 2009; 30:215-21. [PMID: 18833421 DOI: 10.1590/s1516-44462008000300007] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2008] [Accepted: 06/25/2008] [Indexed: 11/21/2022]
Abstract
OBJECTIVE Lithium has been successfully employed to treat bipolar disorder for decades, and recently, was shown to attenuate the symptoms of other pathologies such as Alzheimer's disease, Down's syndrome, ischemic processes, and glutamate-mediated excitotoxicity. However, lithium's narrow therapeutic range limits its broader use. Therefore, the development of methods to better predict its dose becomes essential to an ideal therapy. METHOD the performance of adult Wistar rats was evaluated at the open field and elevated plus maze after a six weeks treatment with chow supplemented with 0.255%, or 0.383% of lithium chloride, or normal feed. Thereafter, blood samples were collected to measure the serum lithium concentration. RESULTS Animals fed with 0.255% lithium chloride supplemented chow presented a higher rearing frequency at the open field, and higher frequency of arms entrance at the elevated plus maze than animals fed with a 50% higher lithium dose presented. Nevertheless, both groups presented similar lithium plasmatic concentration. DISCUSSION different behaviors induced by both lithium doses suggest that these animals had different lithium distribution in their brains that was not detected by lithium serum measurement. CONCLUSION serum lithium concentration measurements do not seem to provide sufficient precision to support its use as predictive of behaviors.
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Affiliation(s)
- Thiago Zaqueu Lima
- Department of Physiology, Universidade Federal de São Paulo, São Paulo, SP, Brazil
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Kasuya J, Kaas G, Kitamoto T. Effects of lithium chloride on the gene expression profiles in Drosophila heads. Neurosci Res 2009; 64:413-20. [PMID: 19410610 DOI: 10.1016/j.neures.2009.04.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2009] [Revised: 04/03/2009] [Accepted: 04/23/2009] [Indexed: 01/13/2023]
Abstract
To gain insight into the basic neurobiological processes regulated by lithium--an effective drug for bipolar disorder--we used Affymetrix Genome Arrays to examine lithium-induced changes in genome-wide gene expression profiles of head mRNA from the genetic model organism Drosophila melanogaster. First, to identify the individual genes whose transcript levels are most significantly altered by lithium, we analyzed the microarray data with stringent criteria (fold change>2; p<0.001) and evaluated the results by RT-PCR. This analysis identified 12 genes that encode proteins with various biological functions, including an enzyme responsible for amino acid metabolism and a putative amino acid transporter. Second, to uncover the biological pathways involved in lithium's action in the nervous system, we used less stringent criteria (fold change>1.2; FDR<0.05) and assigned the identified 66 lithium-responsive genes to biological pathways using DAVID (Database for Annotation, Visualization and Integrated Discovery). The gene ontology categories most significantly affected by lithium were amino acid metabolic processes. Taken together, these data suggest that amino acid metabolism is important for lithium's actions in the nervous system, and lay a foundation for future functional studies of lithium-responsive neurobiological processes using the versatile molecular and genetic tools that are available in Drosophila.
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Affiliation(s)
- Junko Kasuya
- Department of Anesthesia, College of Medicine, University of Iowa, Iowa City, IA 52242, USA
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Tsaltas E, Kontis D, Boulougouris V, Papadimitriou GN. Lithium and cognitive enhancement: leave it or take it? Psychopharmacology (Berl) 2009; 202:457-76. [PMID: 18781296 DOI: 10.1007/s00213-008-1311-8] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/28/2008] [Accepted: 08/20/2008] [Indexed: 12/19/2022]
Abstract
RATIONALE Lithium is established as an effective treatment of acute mania, bipolar and unipolar depression and as prophylaxis against bipolar disorder. Accumulating evidence is also delineating a neuroprotective and neurotrophic role for lithium. However, its primary effects on cognitive functioning remain ambiguous. OBJECTIVES The aim of this paper is to review and combine the relevant translational studies, focusing on the putative cognitive enhancement properties of lithium, specifically on learning, memory, and attention. DISCUSSION These properties are also discussed in reference to research demonstrating a protective action of lithium against cognitive deficits induced by various challenges to the nervous system, such as stress, trauma, neurodegenerative disorders, and psychiatric disorders. CONCLUSIONS It is suggested on the basis of the evidence that the cognitive effects of lithium are best expressed and should, therefore, be sought under conditions of functional or biological challenge to the nervous system.
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Affiliation(s)
- Eleftheria Tsaltas
- Experimental Psychology Laboratory, Department of Psychiatry, Eginition Hospital, Athens University Medical School, 74 Vas. Sofias Avenue, 11528 Athens, Greece.
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Meta-analysis of amygdala volumes in children and adolescents with bipolar disorder. J Am Acad Child Adolesc Psychiatry 2008; 47:1289-98. [PMID: 18827720 DOI: 10.1097/chi.0b013e318185d299] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
OBJECTIVE The neurophysiological basis of bipolar disorder in youths remains poorly understood. Neurofunctional and neuropathologic studies have implicated the amygdala as a primary brain structure involved in the regulation of emotion. Because one of the cardinal features of bipolar disorder is mood dysregulation, structural and functional amygdala abnormalities identified with neuroimaging may serve as useful disease and treatment response biomarker. Therefore, we conducted a meta-analysis summarizing the literature examining amygdala size obtained from magnetic resonance imaging in bipolar youths and adults. METHOD A literature search using the National Institutes of Health's PubMed was conducted to identify published peer-reviewed neuroimaging studies of amygdala size in children, adolescents, and adults with bipolar disorder. Eleven studies that met inclusion and exclusion criteria were identified. RESULTS Smaller amygdala volumes were found in children and adolescents with bipolar disorder compared with the control children and adolescents (standardized mean difference -0.74; 95% confidence interval -1.36 to -0.15). Amygdala volumes in bipolar adults were not significantly different from the control adults (standardized mean difference 0.20; 95% confidence interval -0.31 to 0.73). CONCLUSIONS The results of this meta-analysis suggest that structural amygdala abnormalities are present in bipolar youths but that these structural differences do not seem to be present in bipolar adults. Future studies examining whether structural, functional, and neurochemical amygdala differences between bipolar and control youths may be useful as age-specific biomarkers of illness and treatment response are needed.
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Deciphering the lithium transcriptome: Microarray profiling of lithium-modulated gene expression in human neuronal cells. Neuroscience 2008; 151:1184-97. [DOI: 10.1016/j.neuroscience.2007.10.045] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2007] [Revised: 10/13/2007] [Accepted: 11/01/2007] [Indexed: 12/19/2022]
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Cryns K, Shamir A, Van Acker N, Levi I, Daneels G, Goris I, Bouwknecht JA, Andries L, Kass S, Agam G, Belmaker H, Bersudsky Y, Steckler T, Moechars D. IMPA1 is essential for embryonic development and lithium-like pilocarpine sensitivity. Neuropsychopharmacology 2008; 33:674-84. [PMID: 17460611 DOI: 10.1038/sj.npp.1301431] [Citation(s) in RCA: 52] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Lithium has been the standard pharmacological treatment for bipolar disorder over the last 50 years; however, the molecular targets through which lithium exerts its therapeutic effects are still not defined. We characterized the phenotype of mice with a dysfunctional IMPA1 gene (IMPA1-/-) to study the in vivo physiological functions of IMPA1, in general, and more specifically its potential role as a molecular target in mediating lithium-dependent physiological effects. Homozygote IMPA1-/- mice died in utero between days 9.5 and 10.5 post coitum (p.c.) demonstrating the importance of IMPA1 in early embryonic development. Intriguingly, the embryonic lethality could be reversed by myo-inositol supplementation via the pregnant mothers. In brains of adult IMPA1-/- mice, IMPase activity levels were found to be reduced (up to 65% in hippocampus); however, inositol levels were not found to be altered. Behavioral analysis of the IMPA1-/- mice indicated an increased motor activity in both the open-field test and the forced-swim test as well as a strongly increased sensitivity to pilocarpine-induced seizures, the latter supporting the idea that IMPA1 represents a physiologically relevant target for lithium. In conclusion the IMPA1-/- mouse represents a novel model to study inositol homeostasis, and indicates that genetic inactivation of IMPA1 can mimic some actions of lithium.
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Affiliation(s)
- Kim Cryns
- Research and Early Development Europe, Johnson & Johnson Pharmaceutical Research and Development, Beerse, Belgium
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O'Donnell KC, Gould TD. The behavioral actions of lithium in rodent models: leads to develop novel therapeutics. Neurosci Biobehav Rev 2007; 31:932-62. [PMID: 17532044 PMCID: PMC2150568 DOI: 10.1016/j.neubiorev.2007.04.002] [Citation(s) in RCA: 101] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2006] [Revised: 03/27/2007] [Indexed: 12/13/2022]
Abstract
For nearly as long as lithium has been in clinical use for the treatment of bipolar disorder, depression, and other conditions, investigators have attempted to characterize its effects on behaviors in rodents. Lithium consistently decreases exploratory activity, rearing, aggression, and amphetamine-induced hyperlocomotion; and it increases the sensitivity to pilocarpine-induced seizures, decreases immobility time in the forced swim test, and attenuates reserpine-induced hypolocomotion. Lithium also predictably induces conditioned taste aversion and alterations in circadian rhythms. The modulation of stereotypy, sensitization, and reward behavior are less consistent actions of the drug. These behavioral models may be relevant to human symptoms and to clinical endophenotypes. It is likely that the actions of lithium in a subset of these animal models are related to the therapeutic efficacy, as well the side effects, of the drug. We conclude with a brief discussion of various molecular mechanisms by which these lithium-sensitive behaviors may be mediated, and comment on the ways in which rat and mouse models can be used more effectively in the future to address persistent questions about the therapeutically relevant molecular actions of lithium.
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Affiliation(s)
- Kelley C O'Donnell
- The Laboratory of Molecular Pathophysiology, Mood and Anxiety Disorders Program, National Institute of Mental Health, NIH, HHS, Bldg 35, Rm 1C-912, 35 Convent Drive, Bethesda, MD 20892 3711, USA
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