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Wood Alexander M, Einstein G, Rabin JS. Estrogen-Only Hormone Therapy and Dementia. JAMA 2024:2817758. [PMID: 38635246 DOI: 10.1001/jama.2024.4074] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 04/19/2024]
Affiliation(s)
| | - Gillian Einstein
- Department of Psychology, University of Toronto, Toronto, Ontario, Canada
| | - Jennifer S Rabin
- Hurvitz Brain Sciences Program, Sunnybrook Research Institute, Toronto, Ontario, Canada
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Glynne SJ, Bluming AZ. Authorization of anastrazole to prevent breast cancer in postmenopausal women: a bad idea. Climacteric 2024; 27:215-216. [PMID: 38265057 DOI: 10.1080/13697137.2023.2297889] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 12/14/2023] [Indexed: 01/25/2024]
Abstract
Anastrazole has recently been approved for the prevention of breast cancer in high-risk women in the UK. When given to high-risk women anastrazole halves the risk of developing breast cancer but doesn't reduce the risk of breast cancer death and is associated with significant harms. Women need to be counselled about both the benefits and risks associated with anastrazole use to enable an informed treatment choice.
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Affiliation(s)
- S J Glynne
- Department of Women's Health, The Portland Hospital, London, UK
| | - A Z Bluming
- Department of Medicine, University of Southern California, Los Angeles, CA, USA
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Andy C, Nerattini M, Jett S, Carlton C, Zarate C, Boneu C, Fauci F, Ajila T, Battista M, Pahlajani S, Christos P, Fink ME, Williams S, Brinton RD, Mosconi L. Systematic review and meta-analysis of the effects of menopause hormone therapy on cognition. Front Endocrinol (Lausanne) 2024; 15:1350318. [PMID: 38501109 PMCID: PMC10944893 DOI: 10.3389/fendo.2024.1350318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2023] [Accepted: 02/19/2024] [Indexed: 03/20/2024] Open
Abstract
Introduction Despite evidence from preclinical studies suggesting estrogen's neuroprotective effects, the use of menopausal hormone therapy (MHT) to support cognitive function remains controversial. Methods We used random-effect meta-analysis and multi-level meta-regression to derive pooled standardized mean difference (SMD) and 95% confidence intervals (C.I.) from 34 randomized controlled trials, including 14,914 treated and 12,679 placebo participants. Results Associations between MHT and cognitive function in some domains and tests of interest varied by formulation and treatment timing. While MHT had no overall effects on cognitive domain scores, treatment for surgical menopause, mostly estrogen-only therapy, improved global cognition (SMD=1.575, 95% CI 0.228, 2.921; P=0.043) compared to placebo. When initiated specifically in midlife or close to menopause onset, estrogen therapy was associated with improved verbal memory (SMD=0.394, 95% CI 0.014, 0.774; P=0.046), while late-life initiation had no effects. Overall, estrogen-progestogen therapy for spontaneous menopause was associated with a decline in Mini Mental State Exam (MMSE) scores as compared to placebo, with most studies administering treatment in a late-life population (SMD=-1.853, 95% CI -2.974, -0.733; P = 0.030). In analysis of timing of initiation, estrogen-progestogen therapy had no significant effects in midlife but was associated with improved verbal memory in late-life (P = 0.049). Duration of treatment >1 year was associated with worsening in visual memory as compared to shorter duration. Analysis of individual cognitive tests yielded more variable results of positive and negative effects associated with MHT. Discussion These findings suggest time-dependent effects of MHT on certain aspects of cognition, with variations based on formulation and timing of initiation, underscoring the need for further research with larger samples and more homogeneous study designs.
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Affiliation(s)
- Caroline Andy
- Department of Population Health Sciences, Weill Cornell Medicine, New York, NY, United States
| | - Matilde Nerattini
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
| | - Steven Jett
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
| | - Caroline Carlton
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
| | - Camila Zarate
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
| | - Camila Boneu
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
| | - Francesca Fauci
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
| | - Trisha Ajila
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
| | - Michael Battista
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
| | - Silky Pahlajani
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
- Department of Radiology, Weill Cornell Medicine, New York, NY, United States
| | - Paul Christos
- Department of Population Health Sciences, Weill Cornell Medicine, New York, NY, United States
| | - Matthew E Fink
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
| | - Schantel Williams
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
| | - Roberta Diaz Brinton
- Department of Neurology and Pharmacology, University of Arizona, Tucson, AZ, United States
| | - Lisa Mosconi
- Department of Neurology, Weill Cornell Medicine, New York, NY, United States
- Department of Radiology, Weill Cornell Medicine, New York, NY, United States
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Sun MK, Alkon DL. Alzheimer's therapeutic development: shifting neurodegeneration to neuroregeneration. Trends Pharmacol Sci 2024; 45:197-209. [PMID: 38360510 PMCID: PMC10939773 DOI: 10.1016/j.tips.2024.01.012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 01/13/2024] [Accepted: 01/22/2024] [Indexed: 02/17/2024]
Abstract
Alzheimer's disease (AD), similar to AD-related dementias, is characterized by impaired/lost neuronal structures and functions due to a long progression of neurodegeneration. Derailed endogenous signal pathways and disease processes have critical roles in neurodegeneration and are pharmacological targets in inducing neuroregeneration. Pharmacologically switching/shifting the brain status from neurodegeneration to neuroregeneration is emerging as a new therapeutic concept, one that is not only achievable, but also essential for effective therapy for AD. The results of the pharmacological-induced shift from neurodegeneration to neuroregeneration are twofold: arresting cognitive deterioration (and directing the brain toward cognitive recovery) in established AD, and preventing neurodegeneration through building up cognitive resilience in patients with preclinical or probable AD. In this review, we discuss these new developments in AD pharmacology and relevant clinical trials.
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Affiliation(s)
- Miao-Kun Sun
- Synaptogenix, Inc., 1185 Avenue of the Americas, 3rd Floor, New York, NY 10036, USA.
| | - Daniel L Alkon
- Synaptogenix, Inc., 1185 Avenue of the Americas, 3rd Floor, New York, NY 10036, USA
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Ambikairajah A, Khondoker M, Morris E, de Lange AG, Saleh RNM, Minihane AM, Hornberger M. Investigating the synergistic effects of hormone replacement therapy, apolipoprotein E and age on brain health in the UK Biobank. Hum Brain Mapp 2024; 45:e26612. [PMID: 38339898 PMCID: PMC10836173 DOI: 10.1002/hbm.26612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 01/12/2024] [Accepted: 01/16/2024] [Indexed: 02/12/2024] Open
Abstract
Global prevalence of Alzheimer's Disease has a strong sex bias, with women representing approximately two-thirds of the patients. Yet, the role of sex-specific risk factors during midlife, including hormone replacement therapy (HRT) and their interaction with other major risk factors for Alzheimer's Disease, such as apolipoprotein E (APOE)-e4 genotype and age, on brain health remains unclear. We investigated the relationship between HRT (i.e., use, age of initiation and duration of use) and brain health (i.e., cognition and regional brain volumes). We then consider the multiplicative effects of HRT and APOE status (i.e., e2/e2, e2/e3, e3/e3, e3/e4 and e4/e4) via a two-way interaction and subsequently age of participants via a three-way interaction. Women from the UK Biobank with no self-reported neurological conditions were included (N = 207,595 women, mean age = 56.25 years, standard deviation = 8.01 years). Generalised linear regression models were computed to quantify the cross-sectional association between HRT and brain health, while controlling for APOE status, age, time since attending centre for completing brain health measure, surgical menopause status, smoking history, body mass index, education, physical activity, alcohol use, ethnicity, socioeconomic status, vascular/heart problems and diabetes diagnosed by doctor. Analyses of structural brain regions further controlled for scanner site. All brain volumes were normalised for head size. Two-way interactions between HRT and APOE status were modelled, in addition to three-way interactions including age. Results showed that women with the e4/e4 genotype who have used HRT had 1.82% lower hippocampal, 2.4% lower parahippocampal and 1.24% lower thalamus volumes than those with the e3/e3 genotype who had never used HRT. However, this interaction was not detected for measures of cognition. No clinically meaningful three-way interaction between APOE, HRT and age was detected when interpreted relative to the scales of the cognitive measures used and normative models of ageing for brain volumes in this sample. Differences in hippocampal volume between women with the e4/e4 genotype who have used HRT and those with the e3/e3 genotype who had never used HRT are equivalent to approximately 1-2 years of hippocampal atrophy observed in typical health ageing trajectories in midlife (i.e., 0.98%-1.41% per year). Effect sizes were consistent within APOE e4/e4 group post hoc sensitivity analyses, suggesting observed effects were not solely driven by APOE status and may, in part, be attributed to HRT use. Although, the design of this study means we cannot exclude the possibility that women who have used HRT may have a predisposition for poorer brain health.
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Affiliation(s)
- Ananthan Ambikairajah
- Discipline of Psychology, Faculty of HealthUniversity of CanberraCanberraAustralian Capital TerritoryAustralia
- Centre for Ageing Research and Translation, Faculty of HealthUniversity of CanberraCanberraAustralian Capital TerritoryAustralia
- National Centre for Epidemiology and Population HealthAustralian National UniversityCanberraAustralian Capital TerritoryAustralia
| | | | | | - Ann‐Marie G. de Lange
- Department of Clinical NeurosciencesLausanne University Hospital (CHUV) and University of LausanneLausanneSwitzerland
- Department of PsychologyUniversity of OsloOsloNorway
- Department of PsychiatryUniversity of OxfordOxfordUK
| | - Rasha N. M. Saleh
- Norwich Medical SchoolUniversity of East AngliaNorwichUK
- Department of Clinical and Chemical Pathology, Faculty of MedicineAlexandria UniversityAlexandriaEgypt
| | - Anne Marie Minihane
- Norwich Medical SchoolUniversity of East AngliaNorwichUK
- Norwich Institute of Healthy AgeingNorwichUK
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