Search results for "Gee"
showing 10 items of 639 documents
Aging of the musculoskeletal system: How the loss of estrogen impacts muscle strength.
2019
Skeletal muscle weakness occurs with aging and in females this is compounded by the loss of estrogen with ovarian failure. Estrogen deficiency mediates decrements in muscle strength from both inadequate preservation of skeletal muscle mass and decrements in the quality of the remaining skeletal muscle. Processes and components of skeletal muscle that are affected by estrogens are beginning to be identified. This review focuses on mechanisms that contribute to the loss of muscle force generation when estrogen is low in females, and conversely the maintenance of strength by estrogen. Evidence is accumulating that estrogen deficiency induces apoptosis in skeletal muscle contributing to loss of…
Design and protocol of Estrogenic Regulation of Muscle Apoptosis (ERMA) study with 47 to 55-year-old women's cohort : novel results show menopause-re…
2018
Objective: The multidisciplinary Estrogenic Regulation of Muscle Apoptosis (ERMA) study was designed to reveal how hormonal differences over the menopausal stages affect the physiological and psychological functioning of middle-aged women. This paper describes the protocol and nonrespondent analysis of ERMA and novel findings on menopausal differences in blood count variables and their association with female sex hormones. Methods: Women aged 47 to 55 years were assigned to pre, early peri, late peri, and postmenopausal groups based on follicle-stimulating hormone (FSH) and bleeding diary. Multivariate linear regression models were constructed to estimate the association of 17b-estradiol (E…
Estrogen regulates muscle bioenergetic signaling
2018
Small molecule modulators of amine oxidation, nuclear receptor signaling and glucuronidation : 3-phenylcoumarin as a scaffold of interest
2018
The costs of the drug development process are moderated as computer-aided drug design methods are able to expedite the steps required for lead identification. In fact, computational tools are nowadays virtually indispensable from target identification and validation to preclinical tests due to exponential growth of available information regarding both potential targets and small molecules. One such small molecule with growing number of variations is coumarin. Coumarin scaffold and its various derivatives continue to interest researchers for their vast application potential. Since naturally occurring coumarins are known for example for their antioxidant and anti-inflammatory properties, thos…
Extracellular vesicles and high‐density lipoproteins: Exercise and oestrogen‐responsive small RNA carriers
2023
Decreased systemic oestrogen levels (i.e., menopause) affect metabolic health. However, the detailed mechanisms underlying this process remain unclear. Both oestrogens and exercise have been shown to improve metabolic health, which may be partly mediated by circulating microRNA (c-miR) signalling. In recent years, extracellular vesicles (EV) have increased interest in the field of tissue crosstalk. However, in many studies on EV-carried miRs, the co-isolation of high-density lipoprotein (HDL) particles with EVs has not been considered, potentially affecting the results. Here, we demonstrate that EV and HDL particles have distinct small RNA (sRNA) content, including both host and nonhost sRN…
Data from Estrogenic Regulation of Muscle Apoptosis (ERMA) study
2022
The multidisciplinary Estrogenic Regulation of Muscle Apoptosis (ERMA) study was designed to reveal how hormonal differences over the menopausal stages affect the physiological and psychological functioning of middle-aged women. In addition, health behaviour (e.g., physical activity and eating behaviour) and blood-based biomarkers are investigated. Biomarker data includes different omics datasets (e.g. metabolomics, genomics, transcriptomics). The complete data set includes baseline data collection and two different follow-ups. The baseline ERMA study (=parent data) is a population-based cohort study, which forms a parent data set for the follow-up studies (ERMA follow-up and EsmiRs). Data …
Iän ja hormonikorvaushoidon yhteys tulehdustekijöihin sekä kehon koostumukseen postmenopausaalisilla naisilla
2010
Vahvat ja hyvinvoivat lihakset ovat yksi tärkeimmistä ihmisen terveyttä ja hyvää elämänlaatua ylläpitävistä tekijöistä. Ihmisen ikääntyessä lihasproteiinien hajotus tehostuu johtaen lihassäikeiden pienenemiseen ja niiden määrän vähenemiseen. Tämä puolestaan johtaa lihasten massan, voiman ja toimintakyvyn heikkenemiseen. Kroonisen matalaintensiteettisen tulehduksen uskotaan olevan merkittävimpiä lihasproteiinien hajotusta lisääviä tekijöitä. Matalaintensiteettinen tulehdus on usein yhteydessä korkeaan ikään ja se ilmenee seerumin kohonneina sytokiinitasoina. Sytokiinien lisääntymiseen vaikuttavat muun muassa immuunijärjestelmän heikentyminen, oksidatiivinen stressi ja rasvakudoksen lisääntym…
Genetics of children's bone growth
2006
Miia Suuriniemi tutki perintötekijöiden vaikutusta murrosikäisten lasten luuston kasvuun ja kehitykseen. Osteoporoosin sukurasitus ei rajoitu koskemaan pelkästään vanhuusiän perinnöllistä luukatoa, vaan vaikutus saattaa ilmetä jo lievinä kasvuhäiriöinä lapsuusiässä. Tietyt perintötekijät saattavat myös altistaa lapsuuden luunmurtumille, jotka omalta osaltaan voivat hidastaa nuoren kasvua, aiheuttaen mahdollisesti jopa pysyviä luustovaurioita.Luusto muodostuu pääosin kollageeniproteiinista, joka antaa luustolle vetolujuutta ja sitkojoustavuutta. Kollageenin rakennetta muuttavat geneettiset mutaatiot aiheuttavat lähes poikkeuksetta harvinaista, mutta vakavaa synnynnäistä luustosairautta, oste…
Acute responses of comprehensive gonadosteroids and corticosteroids to resistance exercise before and after 10 weeks of supervised strength training
2020
Resistance training is a potent stimulus for muscle growth and steroid hormones are known to play a role in this adaptation. However, very little is known about the acute exercise‐induced gonadosteroid and corticosteroid hormone responses, including key smaller‐concentration intermediate hormones. The present study determined the acute responses of these steroid hormone families using quantitative UHPLC mass spectrometry (MS) following resistance exercise in strength‐trained men. Venous and fingertip blood was drawn pre‐, mid‐, 5 min post‐ and 15 min post‐resistance exercise, both before and after 10 weeks of supervised resistance training. The experimental resistance exercise sessions cons…
Influence of Oral Contraceptive Use on Adaptations to Resistance Training
2019
Introduction: The majority of young women use oral contraceptives (OCs). Use of OCs has been associated with lower myofibrillar protein and tendon collagen synthesis rates, but it is unknown whether OCs will limit the adaptive response of myotendinous tissue to resistance training. Design and Methods: Fourteen healthy untrained young regular OC users (24 +/- 1 years, fat% 32 +/- 1, 35 +/- 2 ml.min(-1).kg(-1)) and 14 NOC users (non-OC, controls) (24 +/- 1 years, fat% 32 +/- 2, 34 +/- 2 ml.min(-1).kg(-1)) performed a 10-week supervised lower extremity progressive resistance training program. Before and after the intervention biopsies from the vastus lateralis muscle and the patellar tendon we…