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      Endocrine disturbances related to the use of lithium Translated title: Distúrbios endocrinológicos relacionados ao uso de lítio

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          Abstract

          Despite recent advances in pharmacological treatment of psychiatric disorders, lithium salts remain frequently used, as they are effective and inexpensive alternatives, especially in the treatment of bipolar disorders. Their use is commonly associated with various endocrine disorders, mainly in thyroid and parathyroid function, and in mineral metabolism. This article aims at reviewing these potential endocrinopathies related to the use of lithium to make health care professionals aware and familiar with these possible complications when they follow up patients using this drug, and to make them able to monitor, identify and institute early and appropriate treatment.

          Translated abstract

          Apesar dos recentes avanços farmacológicos no tratamento dos transtornos psiquiátricos, os sais de lítio permanecem como uma alternativa eficaz e de menor custo, sendo usados com frequência principalmente no tratamento dos transtornos bipolares. O seu uso é comumente relacionado com diversas alterações endocrinológicas, principalmente nas funções tiroidiana, paratiroidiana e do metabolismo iônico. Este artigo tem por objetivo fazer uma revisão dessas potenciais endocrinopatias relacionadas ao uso do lítio, para que, no seguimento de pacientes em uso dessa medicação, os profissionais de saúde estejam atentos e familiarizados com essas possíveis complicações, conseguindo identificar e instituir tratamento precocemente.

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          Molecular actions and therapeutic potential of lithium in preclinical and clinical studies of CNS disorders.

          Lithium has been used clinically to treat bipolar disorder for over half a century, and remains a fundamental pharmacological therapy for patients with this illness. Although lithium's therapeutic mechanisms are not fully understood, substantial in vitro and in vivo evidence suggests that it has neuroprotective/neurotrophic properties against various insults, and considerable clinical potential for the treatment of several neurodegenerative conditions. Evidence from pharmacological and gene manipulation studies support the notion that glycogen synthase kinase-3 inhibition and induction of brain-derived neurotrophic factor-mediated signaling are lithium's main mechanisms of action, leading to enhanced cell survival pathways and alteration of a wide variety of downstream effectors. By inhibiting N-methyl-D-aspartate receptor-mediated calcium influx, lithium also contributes to calcium homeostasis and suppresses calcium-dependent activation of pro-apoptotic signaling pathways. In addition, lithium decreases inositol 1,4,5-trisphosphate by inhibiting phosphoinositol phosphatases, a process recently identified as a novel mechanism for inducing autophagy. Through these mechanisms, therapeutic doses of lithium have been demonstrated to defend neuronal cells against diverse forms of death insults and to improve behavioral as well as cognitive deficits in various animal models of neurodegenerative diseases, including stroke, amyotrophic lateral sclerosis, fragile X syndrome, as well as Huntington's, Alzheimer's, and Parkinson's diseases, among others. Several clinical trials are also underway to assess the therapeutic effects of lithium for treating these disorders. This article reviews the most recent findings regarding the potential targets involved in lithium's neuroprotective effects, and the implication of these findings for the treatment of a variety of diseases. Published by Elsevier Inc.
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            Anti-bipolar therapy: mechanism of action of lithium.

            This review introduces the concepts that multiple actions of lithium are critical for its therapeutic effect, and that these complex effects stabilize neuronal activities, support neural plasticity, and provide neuroprotection. Three interacting systems appear most critical. (i) Modulation of neurotransmitters by lithium likely readjusts balances between excitatory and inhibitory activities, and decreased glutamatergic activity may contribute to neuroprotection. (ii) Lithium modulates signals impacting on the cytoskeleton, a dynamic system contributing to neural plasticity, at multiple levels, including glycogen synthase kinase-3beta, cyclic AMP-dependent kinase, and protein kinase C, which may be critical for the neural plasticity involved in mood recovery and stabilization. (iii) Lithium adjusts signaling activities regulating second messengers, transcription factors, and gene expression. The outcome of these effects appears likely to result in limiting the magnitudes of fluctuations in activities, contributing to a stabilizing influence induced by lithium, and neuroprotective effects may be derived from its modulation of gene expression.
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              Standards of lithium monitoring in mental health trusts in the UK

              Background Lithium is a commonly prescribed drug with a narrow therapeutic index, and recognised adverse effects on the kidneys and thyroid. Clinical guidelines for the management of bipolar affective disorder published by The National Institute for Health and Clinical Excellence (NICE) recommend checks of renal and thyroid function before lithium is prescribed. They further recommend that all patients who are prescribed lithium should have their renal and thyroid function checked every six months, and their serum lithium checked every three months. Adherence to these recommendations has not been subject to national UK audit. Methods The Prescribing Observatory for Mental Health (POMH-UK) invited all National Health Service Mental Health Trusts in the UK to participate in a benchmarking audit of lithium monitoring against recommended standards. Data were collected retrospectively from clinical records and submitted electronically. Results 436 clinical teams from 38 Trusts submitted data for 3,373 patients. In patients recently starting lithium, there was a documented baseline measure of renal or thyroid function in 84% and 82% respectively. For patients prescribed lithium for a year or more, the NICE standards for monitoring lithium serum levels, and renal and thyroid function were met in 30%, 55% and 50% of cases respectively. Conclusions The quality of lithium monitoring in patients who are in contact with mental health services falls short of recognised standards and targets. Findings from this audit, along with reports of harm received by the National Patient Safety Agency, prompted a Patient Safety Alert mandating primary care, mental health and acute Trusts, and laboratory staff to work together to ensure systems are in place to support recommended lithium monitoring by December 2010.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                abem
                Arquivos Brasileiros de Endocrinologia & Metabologia
                Arq Bras Endocrinol Metab
                Sociedade Brasileira de Endocrinologia e Metabologia (São Paulo )
                1677-9487
                April 2012
                : 56
                : 3
                : 153-158
                Affiliations
                [1 ] Hospital do Servidor Público Estadual Francisco Morato de Oliveira Brazil
                Article
                S0004-27302012000300001
                10.1590/S0004-27302012000300001
                449420a8-577d-42f4-8252-49cf9cd2ff0f

                http://creativecommons.org/licenses/by/4.0/

                History
                Product

                SciELO Brazil

                Self URI (journal page): http://www.scielo.br/scielo.php?script=sci_serial&pid=0004-2730&lng=en
                Categories
                ENDOCRINOLOGY & METABOLISM

                Endocrinology & Diabetes
                Lithium,hypercalcemia,diabetes insipidus,goiter,Lítio,hipercalcemia,bócio
                Endocrinology & Diabetes
                Lithium, hypercalcemia, diabetes insipidus, goiter, Lítio, hipercalcemia, bócio

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