Long-term hormone use after menopause tied to Alzheimer's risk

(Reuters Health) - Women who take hormone replacement therapy (HRT) to ease menopause symptoms like hot flashes and night sweats may be slightly more likely to develop Alzheimer's disease, a large Finnish study suggests.
Source: Reuters: Health - Category: Consumer Health News Tags: healthNews Source Type: news

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In this study, C57BL/6 and Tau KO mice were used. For Tau KO mice, Western blot results of anti-Tau protein specific antibodies showed that Tau KO mice had no positive bands at 50–55 kDa (Tau protein position), while C57BL/6 mice normally expressed Tau protein (Figure 1).FIGURE 1Figure 1 Tau knockout (KO) mice did not express Tau protein.The C57BL/6 mice exhibited depressive behaviors, including anxiety, anhedonia, and depression-like after CUMS, and ketamine treatment alleviated their depressive behavior. Tau KO mice did not exhibit depressive behavior after CUMS. After treatment with ketamine at the same dose, ther...
Source: Frontiers in Psychiatry - Category: Psychiatry Source Type: research
In this study, we report the age-associated differences between fetal MSC (fMSC) populations and MSCs isolated from elderly donors with respect to their transcriptomes. We successfully reprogrammed fMSCs (55 days post conception) and adult MSC (aMSC; 60-74 years) to iPSCs and, subsequently, generated the corresponding iMSCs. In addition, iMSCs were also derived from ESCs. The iMSCs were similar although not identical to primary MSCs. We unraveled a putative rejuvenation and aging gene expression signature. We show that iMSCs irrespective of donor age and cell type re-acquired a similar secretome to that of th...
Source: Fight Aging! - Category: Research Authors: Tags: Newsletters Source Type: blogs
Alzheimer's disease begins with the accumulation of amyloid-β in the brain, but this doesn't mean that amyloid-β is purely molecular waste. Yes, it is harmful given the presence of too much of it in the central nervous system, but that is true of most of our biochemistry. There is good evidence for amyloid-β to act as an antimicrobial system, for example, which is the basis for considering persistent infection as a potential contributing cause of Alzheimer's disease, in which infectious agents drive the generation of ever increasing amounts of amyloid-β. Even setting aside that and other evidence, howev...
Source: Fight Aging! - Category: Research Authors: Tags: Daily News Source Type: blogs
Conclusions In conclusion, articles in this Research Topic made a very significant contribution to our understanding of the role played by environmental factors, dysbiotic conditions, and infections in triggering diseases. Since this is a rapidly expanding area of research, many other factors contributing to the onset of these diseases are not covered here. We are confident, however, that further studies will expand the list as well as bring a better understanding of mechanisms involved in the onset of autoimmune and autoinflammatory diseases. Author Contributions All authors listed have made a substantial, direct and i...
Source: Frontiers in Microbiology - Category: Microbiology Source Type: research
Apelin-13 Suppresses Neuroinflammation Against Cognitive Deficit in a Streptozotocin-Induced Rat Model of Alzheimer’s Disease Through Activation of BDNF-TrkB Signaling Pathway Huaiqing Luo1, Yang Xiang1, Xiangping Qu1, Huijun Liu1, Chi Liu1, Guangyi Li2, Li Han3*† and Xiaoqun Qin1*† 1Department of Physiology, School of Basic Medical Science, Central South University, Changsha, China 2Department of Anatomy, Histology and Embryology, Changsha Medical University, Changsha, China 3Department of Physiology, School of Basic Medical Science, Changsha Medical University, Changsha, China Alzheimer&rsq...
Source: Frontiers in Pharmacology - Category: Drugs & Pharmacology Source Type: research
Marcia H. Ratner, Vidhya Kumaresan and David H. Farb* Laboratory of Molecular Neurobiology, Department of Pharmacology and Experimental Therapeutics, Boston University School of Medicine, Boston, MA, United States Memory dysfunction is a symptomatic feature of many neurologic and neuropsychiatric disorders; however, the basic underlying mechanisms of memory and altered states of circuitry function associated with disorders of memory remain a vast unexplored territory. The initial discovery of endogenous neurosteroids triggered a quest to elucidate their role as neuromodulators in normal and diseased brain functio...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
Vincenzo Tigano1, Giuseppe Lucio Cascini2, Cristina Sanchez-Castañeda3, Patrice Péran4 and Umberto Sabatini5* 1Department of Juridical, Historical, Economic and Social Sciences, University of Magna Graecia, Catanzaro, Italy 2Department of Experimental and Clinical Medicine, University of Magna Graecia, Catanzaro, Italy 3Department of Clinical Psychology and Psychobiology, University of Barcelona, Barcelona, Spain 4ToNIC, Toulouse NeuroImaging Center, Université de Toulouse, Inserm, UPS, Toulouse, France 5Department of Medical and Surgical Sciences, University of Magna Graecia, Catanzaro, Ita...
Source: Frontiers in Endocrinology - Category: Endocrinology Source Type: research
German researchers have developed a new PET imaging technique that shows early...Read more on AuntMinnie.comRelated Reading: New Alzheimer's definition relies on imaging biomarkers Flortaucipir-PET could lead in early Alzheimer's detection PET study links menopausal status to Alzheimer's Novel PET tracer helps diagnose concussed patients PET with tau agent sheds light on Alzheimer's disease
Source: AuntMinnie.com Headlines - Category: Radiology Source Type: news
en Fuliang Hu Estrogen deficiency after menopause is associated with autonomic nervous changes, leading to memory impairment and increased susceptibility to Alzheimer’s disease (AD). Royal jelly (RJ) from honeybees (Apis mellifera) has estrogenic activity. Here, we investigated whether RJ can improve behavior, cholinergic and autonomic nervous function in ovariectomized (OVX) cholesterol-fed rabbits. OVX rabbits on high-cholesterol diet were administered with RJ for 12 weeks. The results showed that RJ could significantly improve the behavioral deficits of OVX cholesterol-fed rabbits and image structure of ...
Source: Molecules - Category: Chemistry Authors: Tags: Article Source Type: research
Research, published in theThe BMJ, suggests that HRT treatment for menopause may slightly increase a women’s risk of developing Alzheimer’s disease.News Weeks
Source: Society for Endocrinology - Category: Endocrinology Source Type: news
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