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Hophing L, Kyriakopoulos P, Bui E. Sex and gender differences in epilepsy. INTERNATIONAL REVIEW OF NEUROBIOLOGY 2022; 164:235-276. [PMID: 36038205 DOI: 10.1016/bs.irn.2022.06.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Sex and gender differences in epilepsy are important influencing factors in epilepsy care. In epilepsy, the hormonal differences between the sexes are important as they impact specific treatment considerations for patients at various life stages particularly during early adulthood with establishment of the menstrual cycle, pregnancy, perimenopause and menopause. Choice of antiseizure medication may have direct consequences on hormonal cycles, hormonal contraception, pregnancy and fetal risk of major congenital malformation. Conversely hormones whether intrinsic or extrinsically administered may have direct impact on antiseizure medications and seizure control. This chapter explores these important influences on the management of persons with epilepsy.
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Affiliation(s)
- Lauren Hophing
- Krembil Brain Institute, University Health Network, University of Toronto, Toronto, Canada
| | | | - Esther Bui
- Krembil Brain Institute, University Health Network, University of Toronto, Toronto, Canada.
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Gilfarb RA, Leuner B. GABA System Modifications During Periods of Hormonal Flux Across the Female Lifespan. Front Behav Neurosci 2022; 16:802530. [PMID: 35783228 PMCID: PMC9245048 DOI: 10.3389/fnbeh.2022.802530] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2021] [Accepted: 02/21/2022] [Indexed: 01/10/2023] Open
Abstract
The female lifespan is marked by periods of dramatic hormonal fluctuation. Changes in the ovarian hormones estradiol and progesterone, in addition to the progesterone metabolite allopregnanolone, are among the most significant and have been shown to have widespread effects on the brain. This review summarizes current understanding of alterations that occur within the GABA system during the major hormonal transition periods of puberty, the ovarian cycle, pregnancy and the postpartum period, as well as reproductive aging. The functional impacts of altered inhibitory activity during these times are also discussed. Lastly, avenues for future research are identified, which, if pursued, can broaden understanding of the GABA system in the female brain and potentially lead to better treatments for women experiencing changes in brain function at each of these hormonal transition periods.
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Affiliation(s)
- Rachel A. Gilfarb
- Neuroscience Graduate Program, The Ohio State University, Columbus, OH, United States
| | - Benedetta Leuner
- Department of Psychology, The Ohio State University, Columbus, OH, United States
- Department of Neuroscience, The Ohio State University, Columbus, OH, United States
- *Correspondence: Benedetta Leuner,
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Abstract
PURPOSE OF REVIEW Issues pertaining to women with epilepsy have advanced with a better understanding of multidirectional influences among hormones, seizures, and antiseizure medications, as well as pregnancy-related concerns around fertility, seizure destabilization, and antiseizure medication-associated teratogenicity. This article highlights important developments in this field and reviews best practices in the management of women with epilepsy. RECENT FINDINGS Important external hormonal influences may impact women with epilepsy particularly in the context of gender-affirming medications, hormonal replacement therapy, and fertility therapies. Fertility for women with epilepsy is influenced by multiple variables; however, in the absence of preexisting fertility issues, epilepsy per se is not associated with significantly impaired fertility. Once women with epilepsy are pregnant, the majority have a stable course. Antiseizure medication use in pregnancy is associated with major congenital malformations 2 to 5 times that of the general population and is highest with high-dose (≥1500 mg or greater total daily) valproate. Carefully considered changes in drug choice and dose may mitigate these risks. Therapeutic drug monitoring plays an important role in pregnancy care, and under expert supervision, women with epilepsy in pregnancy have similar seizure risks as women with epilepsy who are not pregnant. As women with epilepsy age, bone health and menopause may further be impacted by seizures and antiseizure medications. SUMMARY The care of women with epilepsy is a multifaceted discipline that recognizes the life-long impact of sex and gender influences on epilepsy care.
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Zhang R, Yang M, Li Y, Liu H, Ren M, Tao ZS. Effect of alendronate on the femoral metaphyseal defect under carbamazepine in ovariectomized rats. J Orthop Surg Res 2021; 16:14. [PMID: 33407695 PMCID: PMC7788868 DOI: 10.1186/s13018-020-02151-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Accepted: 12/09/2020] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND The use of antiepileptic drugs and estrogen deficiency put forward higher requirements for bone defect regeneration. The present study investigated the effects of alendronate (ALN) on femoral bone defect in ovariectomized (OVX) rats under the influence of carbamazepine (CBZ). METHODS One hundred female SD rats at 3 months of age were either sham-operated or OVX and divided into four groups: sham control (CON); OVX control (OVX); ovariectomized rats treated with CBZ via gavage (75 mg/kg/day; CBZ); ovariectomized rats treated with CBZ plus ALN (2 mg/kg/day; CBZ-ALN). A critical-sized femoral metaphyseal bone defect was established in all female SD rats. Animals from the CBZ and CBZ-ALN groups received drugs by gavage the day after bone defect surgery was performed. After the rats were sacrificed, the defected area located in the distal femur was harvested for evaluation by microcomputed tomography (micro-CT), hematoxylin and eosin (HE) staining, and Masson's trichrome staining. The samples were also analyzed by biomechanics and immunohistochemical evaluation (IHC). Besides, biochemical analysis evaluates all serum samples. RESULTS The present study showed that ovariectomy changed the microstructural parameters of bone. The use of CBZ further decreased femur bone mass while treatment with ALN prevented bone loss. Compared to OVX and CBZ groups, CBZ-ALN group promoted bone neoformation and enhanced the ultimate load of the femur bone. However, the group of CBZ-ALN did not return to normal levels compared with the CON group. Besides, we noticed that CBZ-ALN group reduced tartrate-resistant acid phosphatase-5b (Tracp-5b) expression and had no significant effect on the expression of osteocalcin (OCN) and type I collagen (Col-I) in IHC compared with CBZ group. Biochemical analysis results presented that systemic delivery of CBZ showed pernicious effects on bone formation and resorption in ovariectomized rats, with the worse effects on C-terminal crosslinked telopeptide of type I collagen (CTX-1). Besides, a significant decrease in CTX-1 levels was observed in CBZ-ALN group as compared to the group of CBZ. CONCLUSION These results demonstrated that ALN can effectively reverse the effects of CBZ on the microarchitectural properties of bone, and thus can have a positive effect on local bone neoformation in rats with osteoporosis. CLINICAL RELEVANCE The dose of 2 mg/kg ALN improves the negative effect of prescription of CBZ at 75 mg/kg and promotes bone neoformation of femoral bony deficits.
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Affiliation(s)
- Ruotian Zhang
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China
| | - Min Yang
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China.
| | - Yang Li
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China
| | - Hedong Liu
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China
| | - Maoxian Ren
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China
| | - Zhou-Shan Tao
- Department of Trauma Orthopedics, The First Affiliated Hospital of Wannan Medical College,Yijishan Hospital, No. 2, Zhe shan Xi Road, Anhui, 241001, Wuhu, People's Republic of China
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Gooneratne IK, Wimalaratna S. Update on management of epilepsy in women for the non-neurologist. Postgrad Med J 2016; 92:554-9. [PMID: 27412920 DOI: 10.1136/postgradmedj-2016-134191] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 06/22/2016] [Indexed: 12/16/2022]
Affiliation(s)
| | - Sunil Wimalaratna
- Department of Neurology, Kettering General Hospital, Kettering, UK Neurosciences Department, John Radcliffe Hospital, Oxford University Hospital, Oxford, UK
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Abstract
The increased rate of fractures associated with epilepsy has been long recognised but remains incompletely understood. Study quality and study results have varied, with some but not all studies showing bone diseases including osteoporosis and/or osteomalacia, and a high prevalence of vitamin D insufficiency and deficiency are also noted. Falls risk can also be higher in patients with epilepsy taking anti-epileptic medications, potentially leading to fracture. Larger research collaborations are recommended to further advance understanding in this field, particularly to examine underlying genetic and pharmacogenomic associations of epilepsy and anti-epileptic medication usage and its association with bone diseases and fractures, as well as further investigation into optimal management of bone health in epilepsy.
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Affiliation(s)
- Sandra J Petty
- Melbourne Brain Centre, The Florey Institute of Neuroscience and Mental Health, Parkville, VIC, Australia.
- Melbourne Brain Centre at The Royal Melbourne Hospital, The Department of Medicine, The University of Melbourne, Parkville, VIC, Australia.
- Academic Centre, Ormond College, Parkville, VIC, Australia.
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC, Australia.
- Department of Neurology, St Vincent's Hospital Melbourne, Fitzroy, VIC, Australia.
- Department of Neurology, Western Health, Sunshine, VIC, Australia.
- Department of Medical Education, The University of Melbourne, Parkville, VIC, Australia.
| | - Helen Wilding
- St Vincent's Hospital Library Service, St Vincent's Hospital Melbourne, Fitzroy, VIC, Australia
| | - John D Wark
- Department of Medicine, The Royal Melbourne Hospital, The University of Melbourne, Parkville, VIC, Australia
- Bone and Mineral Medicine, The Royal Melbourne Hospital, Parkville, VIC, Australia
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Bove R, Healy BC, Musallam A, Glanz BI, De Jager PL, Chitnis T. Exploration of changes in disability after menopause in a longitudinal multiple sclerosis cohort. Mult Scler 2015; 22:935-43. [PMID: 26447063 DOI: 10.1177/1352458515606211] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2015] [Accepted: 08/24/2015] [Indexed: 11/17/2022]
Abstract
BACKGROUND Onset of multiple sclerosis (MS) is typically in early adulthood. The impact, if any, of menopause on the MS course is unknown. Our objective was to determine whether menopause is associated with changes in MS severity in a longitudinal clinical cohort. METHODS Responses from an ongoing reproductive questionnaire deployed in all active female CLIMB observational study participants with a diagnosis of clinically isolated syndrome (CIS) or MS were analyzed when the response rate was 60%. Reproductive data were linked with clinical severity measures that were prospectively collected every six months, including our primary measure, the Expanded Disability Status Scale (EDSS). RESULTS Over one-half of the respondents (368 of 724 women) were postmenopausal. Median age at natural menopause was 51.5 years. In our primary analysis of 124 women who were followed longitudinally (mean duration 10.4 years) through their menopausal transition (natural or surgical), menopause represented an inflection point in their EDSS changes (difference of 0.076 units; 95% CI 0.010-0.14; p = 0.024). These findings were not explained by vitamin D levels, nor changes in treatment or smoking status over this period. There was no effect of hormone replacement therapy (HRT) exposure, but HRT use was low. CONCLUSIONS We observed a possible worsening of MS disability after menopause. Larger cohorts are required to assess any HRT effects.
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Affiliation(s)
- Riley Bove
- Partners Multiple Sclerosis Center, Department of Neurology, Brigham and Women's Hospital, Brookline, MA, USA/Harvard Medical School, Boston, MA, USA/Center for Neurologic Diseases, Harvard Medical School, Boston, MA, USA
| | - Brian C Healy
- Partners Multiple Sclerosis Center, Department of Neurology, Brigham and Women's Hospital, Brookline, MA, USA/Harvard Medical School, Boston, MA, USA/Harvard Medical School, Boston, MA, USA/Center for Neurologic Diseases, Harvard Medical School, Boston, MA, USA/Biostatistics Center, Massachusetts General Hospital, Boston, MA, USA
| | - Alexander Musallam
- Partners Multiple Sclerosis Center, Department of Neurology, Brigham and Women's Hospital, Brookline, MA, USA
| | - Bonnie I Glanz
- Partners Multiple Sclerosis Center, Department of Neurology, Brigham and Women's Hospital, Brookline, MA, USA/Harvard Medical School, Boston, MA, USA
| | - Philip L De Jager
- Partners Multiple Sclerosis Center, Department of Neurology, Brigham and Women's Hospital, Brookline, MA, USA/Harvard Medical School, Boston, MA, USA/Center for Neurologic Diseases, Harvard Medical School, Boston, MA, USA
| | - Tanuja Chitnis
- Partners Multiple Sclerosis Center, Department of Neurology, Brigham and Women's Hospital, Brookline, MA, USA/Harvard Medical School, Boston, MA, USA/Center for Neurologic Diseases, Harvard Medical School, Boston, MA, USA
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Ong CT, Sheu SM, Tsai CF, Wong YS, Chen SCC. Age-dependent sex difference of the incidence and mortality of status epilepticus: a twelve year nationwide population-based cohort study in Taiwan. PLoS One 2015; 10:e0122350. [PMID: 25826701 PMCID: PMC4380468 DOI: 10.1371/journal.pone.0122350] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 02/15/2015] [Indexed: 11/19/2022] Open
Abstract
Status epilepticus (SE) is a serious neurologic emergency associated with a significant mortality. The objective of this study is to investigate its epidemiology in terms of age- and sex-specific incidences and mortality. By using the Taiwan National Health Insurance Research Database during 2000 to 2011, we identified hospitalized patients with a discharged diagnosis of SE and calculated the incidence and in-hospital mortality of SE with respect to age and sex. The overall incidence of SE was 4.61 per 100,000 person-years, which displayed a "J-shaped" distribution by age with a little higher under the age of 5 and highest over 60 years. The male-to-female rate ratio was 1.57 and it demonstrated a "mountain-shape" across ages with the peak at 45 to 49 years old. The in-hospital mortality was significantly lower in males (7.38%) than in females (11.12%) with an odds ratio of 0.64 (95% CI 0.56-0.72). Notably, the in-hospital mortality for females increased rapidly after the age of 40 to 45 years. The multivariate analysis found males had a significantly lower risk of mortality than females after, but not before, 45 years of age with an odds ratio of 0.56 (95% CI 0.49-0.65). Sex and age are crucial factors associated with the incidence and in-hospital mortality of SE. The females over 45 years of age have a higher risk of occurrence and mortality from SE. The underlying mechanism deserves further study.
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Affiliation(s)
- Cheung-Ter Ong
- Department of Neurology, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi city, Taiwan
- Department of Nursing, Chung Jen Junior College of Nursing, Health Science and Management, Chia-Yi, Taiwan
| | - Shew-Meei Sheu
- Department of Medical Research, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi city, Taiwan
| | - Ching-Fang Tsai
- Department of Medical Research, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi city, Taiwan
| | - Yi-Sin Wong
- Department of Family Medicine, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi city, Taiwan
| | - Solomon Chih-Cheng Chen
- Department of Medical Research, Ditmanson Medical Foundation Chia-Yi Christian Hospital, Chiayi city, Taiwan
- Department of Pediatrics, School of Medicine, Taipei Medical University, Taipei, Taiwan
- * E-mail: (SCC)
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Be aware of the potential effects of menopause on epilepsy and its treatment. DRUGS & THERAPY PERSPECTIVES 2015. [DOI: 10.1007/s40267-015-0192-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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New antiepileptic drugs and women. Seizure 2014; 23:585-91. [DOI: 10.1016/j.seizure.2014.05.004] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2014] [Revised: 05/08/2014] [Accepted: 05/10/2014] [Indexed: 12/26/2022] Open
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Effect of prenatal methamphetamine exposure and challenge dose of the same drug in adulthood on epileptiform activity induced by electrical stimulation in female rats. Neuroscience 2014; 257:130-8. [DOI: 10.1016/j.neuroscience.2013.10.069] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2013] [Revised: 10/14/2013] [Accepted: 10/28/2013] [Indexed: 12/28/2022]
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12
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Bove R, Chitnis T, Houtchens M. Menopause in multiple sclerosis: therapeutic considerations. J Neurol 2013; 261:1257-68. [PMID: 24101131 DOI: 10.1007/s00415-013-7131-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Accepted: 09/24/2013] [Indexed: 11/25/2022]
Abstract
While the onset of multiple sclerosis (MS) typically occurs during the childbearing years, many women living with MS are of perimenopausal age. There is frequent overlap between menopausal and MS-related symptoms and co-morbidities (e.g. sexual dysfunction, mood disorders and bladder function). Furthermore, some MS symptoms may be exacerbated by perimenopausal changes such as hot flashes or sleep disturbance. The MS neurologist may frequently be the first to become aware of these symptoms and to play a role in monitoring and managing them. In this review, we describe immunological and neurologic changes at menopause as they may impact MS. We then review common symptoms, including fatigue, depression, sexual function, pain and insomnia, and provide both behavioral and pharmacological suggestions for their management. Next, we discuss the need for osteoporosis and cancer screening in perimenopausal women with MS. Finally, we highlight important research gaps, including what effect, if any, the menopausal transition may play on MS disease course as well as the potential modulatory role of hormone replacement therapies.
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Affiliation(s)
- Riley Bove
- Department of Neurology, Partners Multiple Sclerosis Center, Brigham and Women's Hospital, 1 Brookline Place West, Suite 225, Brookline, MA, 02445, USA,
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Abstract
Psychotropic drugs are a crucial element of treatment for psychiatric disorders; however there is an established association between many classes of psychotropic medications and fracture risk among older adults, and growing evidence that some classes of medications may also impact bone mineral density (BMD). In this paper we review recent epidemiologic research on the association between psychotropic medications and osteoporosis, and discuss current controversies and unresolved issues surrounding this relationship. Key areas in need of focused inquiry include resolving whether the apparent association between psychotropic medications and BMD is due to confounding by indication, whether this relationship differs for men and women, and whether the implications of these medications for bone health vary over the life course. Clinical research to delineate the risk/benefit ratio of psychotropic medications for older adults, particularly those who are at high risk for fracture, is also needed to facilitate prescribing decisions between patients and physicians.
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Affiliation(s)
- Monique J Brown
- Department of Epidemiology and Community Health, Virginia Commonwealth University School of Medicine, Richmond, 23238, USA
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Verrotti A, D'Egidio C, Agostinelli S, Verrotti C, Pavone P. Diagnosis and management of catamenial seizures: a review. Int J Womens Health 2012; 4:535-41. [PMID: 23071424 PMCID: PMC3469236 DOI: 10.2147/ijwh.s28872] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
Catamenial epilepsy is defined as a pattern of seizures that changes in severity during particular phases of the menstrual cycle, wherein estrogens are proconvulsant, increasing the neuronal excitability; and progesterone is anticonvulsant, enhancing GABA-mediated inhibition. Thus, changes in serum estradiol/progesterone ratio throughout a normal reproductive cycle bring about an increased or decreased risk of seizure occurrence. To date, there are no specific drug treatments for catamenial epilepsy however, non-hormonal and hormonal therapies have been proposed. The aim of this review is to report preclinical and clinical evidences about the relationship between female reproductive steroids and epileptic seizures, and to describe treatment approaches for catamenial epilepsy.
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Abstract
Vigabatrin is an effective antiepileptic drug (AED) for the treatment of refractory complex partial seizures (rCPS) and infantile spasms (IS). In clinical trials, vigabatrin was generally well-tolerated with an adverse event profile similar to that of other AEDs. The most common treatment-related adverse events were central nervous system effects, including drowsiness, dizziness, headache, and fatigue, with adjunctive vigabatrin in adults with rCPS, and sedation, somnolence, and irritability with vigabatrin monotherapy in infants with IS. Vigabatrin had little effect on cognitive function, mood, or behavior in a battery of neuropsychologic tests for rCPS. In placebo-controlled clinical trials, the incidence of depression and psychosis, but not other psychiatric adverse events, was greater with vigabatrin than placebo. Intramyelinic edema (IME) was initially identified in rats and dogs and led to a temporary suspension of clinical trials in the United States. IME was subsequently correlated with delays in evoked potential (EP) and increased T(2) -weighted signals on magnetic resonance imaging (MRI). Clinical trials of vigabatrin were allowed to resume after IME was not detected by neuropathologic assessments of autopsy and neurosurgical specimens or by serial EP or MRI assessments in older children and adults receiving vigabatrin. Subsequently, MRI abnormalities characterized by increased T(2) intensity and restricted diffusion were identified in infants treated with vigabatrin for IS. These abnormalities generally resolved with discontinuation of vigabatrin and, in some cases, during continued therapy. The benefit of improved seizure control must be balanced against the potential risks associated with vigabatrin, including abnormal MRI changes and other vigabatrin-related safety issues.
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Affiliation(s)
- S D Walker
- Fleishman-Hillard Inc., Kansas City, MO 64108-2522, USA.
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Findley JC, Joshi KG. A Case of Repeated Brief Psychotic Episodes Secondary to Discontinuation of Non-Prescription Estrogen Replacement Therapy. PSYCHOSOMATICS 2012; 53:285-8. [DOI: 10.1016/j.psym.2011.08.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2011] [Revised: 08/11/2011] [Accepted: 08/15/2011] [Indexed: 11/15/2022]
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