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Fight Aging! Newsletter, January 16th 2023
Conclusions Implanted Hair Follicle Cells Produce Remodeling of Scar Tissue Assessment of Somatic Mosaicism as a Biomarker of Aging The Gut Microbiome of Centenarians https://www.fightaging.org/archives/2023/01/the-gut-microbiome-of-centenarians/ The state of the gut microbiome is arguably as influential on health as exercise. Various microbial species present in the gut produce beneficial metabolites, such as butyrate, or harmful metabolites, such as isoamylamine, or can provoke chronic inflammation in a variety of ways. An individual can have a better or worse microbiome, assessing these and other fu...
Source: Fight Aging! - January 15, 2023 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Effects of active immunization against a 13-amino acid receptor-binding epitope of FSH β on fertility regulation in female mice
Reprod Biol. 2022 Jun 27;22(3):100669. doi: 10.1016/j.repbio.2022.100669. Online ahead of print.ABSTRACTFollicle-stimulating hormone (FSH) is crucial for ovarian folliculogenesis and thus essential for female fertility. Here, we developed a novel FSH vaccine based on the tandem of a 13-amino acid receptor-binding epitope of FSHβ (FSHβ13AA-T) and used a mouse model to test its efficacy in female fertility regulation. Compared to placebo-immunized controls, FSHβ13AA-T vaccination: induced a marked (P < 0.05) antibody generation; reduced (P < 0.05) serum concentrations of FSH, inhibin B and 17β-estradiol; disrupted ...
Source: Reproductive Biology - June 30, 2022 Category: Reproduction Medicine Authors: Fengyan Meng Huan Yao Jiaxin Li Yong Zhuo Guozhi Yu Guixian Bu Xiaohan Cao XiaoGang Du Qiuxia Liang Xianyin Zeng Xingfa Han Source Type: research

Differential Antibody Response to Inactivated COVID-19 Vaccines in Healthy Subjects
Front Cell Infect Microbiol. 2021 Dec 16;11:791660. doi: 10.3389/fcimb.2021.791660. eCollection 2021.ABSTRACTThe appearance and magnitude of the immune response and the related factors correlated with SARS-CoV-2 vaccination need to be defined. Here, we enrolled a prospective cohort of 52 participants who received two doses of inactivated vaccines (BBIBP-CorV). Their serial plasma samples (n = 260) over 2 months were collected at five timepoints. We measured antibody responses (NAb, S-IgG and S-IgM) and routine blood parameter. NAb seroconversion occurred in 90.7% of vaccinated individuals and four typical NAb kinetic curve...
Source: Cancer Control - January 3, 2022 Category: Cancer & Oncology Authors: Jiaqi Zhang Shan Xing Dan Liang Wei Hu Changwen Ke Jinyong He Runyu Yuan Yile Huang Yizhe Li Dongdong Liu Xuedong Zhang Lin Li Jianhua Lin Weili Li Xiangyun Teng Yijun Liu Wei Wen Qiang Kang Dawei Wang Wanli Liu Jianhua Xu Source Type: research

A dual kisspeptin-GnRH immunogen for reproductive immunosterilization
Vaccine. 2021 Sep 3:S0264-410X(21)00985-3. doi: 10.1016/j.vaccine.2021.07.080. Online ahead of print.ABSTRACTGnRH immunogens have been extensively employed in immunocontraception of animals. While they are effective, they are not 100% efficacious and of limited duration. GnRH secretion is dependent on upstream stimulation by kisspeptin. We therefore hypothesised that a dual immunogen combining GnRH and kisspeptin may be more efficacious through targeting two levels of the axis. We have previously shown GnRH immunogen elicits permanent sterilisation when sheep are vaccinated neonatally suggesting that the efficacy of GnRH i...
Source: Vaccine - September 7, 2021 Category: Allergy & Immunology Authors: Jesus A Junco Franklin Fuentes Robert P Millar Source Type: research

DrugWAS: Drug-wide association studies for COVID-19 drug repurposing
In conclusion, this cohort study leveraged EHR data to identify a list of drugs that could be repurposed to improve COVID-19 outcomes. Further randomized clinical trials are needed to investigate the efficacy of the proposed drugs.PMID:34314511 | DOI:10.1002/cpt.2376
Source: Clinical Pharmacology and Therapeutics - July 27, 2021 Category: Drugs & Pharmacology Authors: Cosmin A Bejan Katherine N Cahill Patrick J Staso Leena Choi Josh F Peterson Elizabeth J Phillips Source Type: research

Novel inhibitors of the main protease enzyme of SARS-CoV-2 identified via molecular dynamics simulation-guided in vitro assay
In this study, we focus on the main protease enzyme of SARS-CoV-2, 3CLpro, which is critical for viral replication. We employ explicit solvent molecular dynamics simulations of about 150 compounds docked into 3CLpro's binding site and that had emerged as good main protease ligands from our previous in silico screening of over 1.2 million compounds. By incoporating protein dynamics and applying a range of structural descriptors, such as the ability to form specific contacts with the catalytic dyad residues of 3CLpro and the structural fluctuations of the ligands in the binding site, we are able to further refine our compoun...
Source: Bioorganic Chemistry - April 16, 2021 Category: Chemistry Authors: Jennifer Loschwitz Anna J äckering Monika Keutmann Maryam Olagunju Raphael J Eberle Monika Aparecida Coronado Olujide O Olubiyi Birgit Strodel Source Type: research

Fight Aging! Newsletter, July 20th 2020
This study was the first to demonstrate a causal relationship between glial senescence and neurodegeneration. In this study, accumulations of senescent astrocytes and microglia were found in tau-associated neurodegenerative disease model mice. Elimination of these senescent cells via a genetic approach can reduce tau deposition and prevent the degeneration of cortical and hippocampal neurons. Most recently, it was shown that clearance of senescent oligodendrocyte progenitor cells in AD model mice with senolytic agents could lessen the Aβ plaque load, reduce neuroinflammation, and ameliorate cognitive deficits. This...
Source: Fight Aging! - July 19, 2020 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Fight Aging! Newsletter, July 22nd 2019
This study elucidates the potential to use mitochondria from different donors (PAMM) to treat UVR stress and possibly other types of damage or metabolic malfunctions in cells, resulting in not only in-vitro but also ex-vivo applications. Gene Therapy in Mice Alters the Balance of Macrophage Phenotypes to Slow Atherosclerosis Progression https://www.fightaging.org/archives/2019/07/gene-therapy-in-mice-alters-the-balance-of-macrophage-phenotypes-to-slow-atherosclerosis-progression/ Atherosclerosis causes a sizable fraction of all deaths in our species. It is the generation of fatty deposits in blood vessel...
Source: Fight Aging! - July 21, 2019 Category: Research Authors: Reason Tags: Newsletters Source Type: blogs

Modeling Streptococcus pyogenes Pharyngeal Colonization in the Mouse
In conclusion, the mouse pharyngeal colonization model is an affordable and accessible experimental system that allows a broader group of research groups to test the importance of their findings in an in vivo model. There is a great deal of overlap between the bacterial and immune factors found to be important in human and murine pharyngeal colonization. Although MHC-II humanized mice could prove useful in answering certain questions, the use of inbred mouse lines appears to be sufficient for evaluation of most questions, both related to bacterial factors and the host immune response. However, when promising treatments or ...
Source: Frontiers in cellular and infection microbiology - May 1, 2019 Category: Microbiology Source Type: research