Results 41 to 50 of about 551,564 (339)

Short oestrous cycles in sheep during anoestrus involve defects in progesterone biosynthesis and luteal neovascularisation [PDF]

, 2014
Anoestrous ewes can be induced to ovulate by the socio-sexual, 'ram effect'. However, in some ewes the induced ovulation is followed by an abnormally short luteal phase causing a so called, "short cycle".
Acritopoulou, C Fabre Nys, Cahill, Chanvallon, Chemineau, Chemineau, Dickson, Dickson, H M Brown, Hazzard, Hinney, J Cognié, Koos, Land, Lassoued, Livak, Martin, Martin, Pearce, Pearce, Pritts, R J Scaramuzzi, Richards, Ungerfeld, Weems, Weems, Wulff, Wulff, Wulff   +28 more
core   +3 more sources

Solubility improvement of progesterone from solid dispersions prepared by solvent evaporation and co-milling [PDF]

, 2020
The aim of this contribution was to evaluate the impact of processing methods and polymeric carriers on the physicochemical properties of solid dispersions of the poorly soluble drug progesterone (PG). Five polymers: hydroxypropyl methylcellulose (HPMC),
Al-Obaidi, Hisham, Chen, Xing, Nikolakakis, Ioannis, Partheniadis, Ioannis   +3 more
core   +1 more source

The interaction between vaginal microbiota, cervical length, and vaginal progesterone treatment for preterm birth risk

Microbiome, 2017
Preterm birth is the primary cause of infant death worldwide. A short cervix in the second trimester of pregnancy is a risk factor for preterm birth. In specific patient cohorts, vaginal progesterone reduces this risk.
L. Kindinger, P. Bennett, Yun S. Lee, J. Marchesi, Ann Smith, Stefano Cacciatore, E. Holmes, J. Nicholson, T. Teoh, D. MacIntyre   +9 more
semanticscholar   +1 more source

Mice lacking progesterone receptor exhibit pleiotropic reproductive abnormalities.

Genes & Development, 1995
Although progesterone has been recognized as essential for the establishment and maintenance of pregnancy, this steroid hormone has been recently implicated to have a functional role in a number of other reproductive events.
J. Lydon, C. Funk, Shiala K. Mani, Angela R. Hughes, G. Shyamala, Orla M. Connee ly   +5 more
semanticscholar   +1 more source

The GABAA antagonist bicuculline attenuates progesterone-induced memory impairments in middle-aged ovariectomized rats

Frontiers in Aging Neuroscience, 2015
In women, high levels of natural progesterone have been associated with detrimental cognitive effects via the maternal amnesia phenomenon as well as in controlled experiments.
B. Blair Braden, B. Blair Braden, B. Blair Braden, Melissa L. Kingston, Elizabeth eWhitton, Courtney N. Lavery, Candy W.S. Tsang, Heather Allyson Bimonte-Nelson, Heather Allyson Bimonte-Nelson   +8 more
doaj   +1 more source

Initiating luteal phase support with sc progesterone based on low serum progesterone on the transfer day in true natural cycle frozen embryo transfers

Frontiers in Endocrinology, 2023
IntroductionConcerning contemporary in-vitro fertilisation (IVF) practice, the use of frozen embryo transfer (FET) cycles has become more common than fresh transfers.
Cem Demirel, Pınar Özcan, Fırat Tülek, Hikmet Tunç Timur, Özge Pasin   +4 more
doaj   +1 more source

Progesterone significantly enhances the mobility of boar spermatozoa [PDF]

, 2013
Progesterone released from the cumulus cells of the oocyte causes a number of physiological responses in human sperm cells including hyperactivation, acrosome reaction and chemotaxis. We employed a validated sperm mobility assay, which involves measuring
Adya, Ashok K., Brown, Sean G., Campbell, Johan M., Madamidola, Oladipo, Savage, Anne L., Soriano, Renalyn, Tamhane, Kshitij   +6 more
core   +3 more sources

Effect of slightly elevated progesterone on hCG trigger day on clinical pregnancy rate in GnRH-ant IVF/ICSI cycles

Reproductive Health, 2022
Background It was been agreed that significantly elevated progesterone level on the hCG trigger day have detrimental effect on clinical outcomes in IVF/ICSI cycles.
Jing Zhao, Jie Hao, Bin Xu, Yonggang Wang, Yanping Li   +4 more
doaj   +1 more source

Neuroactive steroids in depression and anxiety disorders: Clinical studies [PDF]

, 2006
Certain neuroactive steroids modulate ligand-gated ion channels via non-genomic mechanisms. Especially 3 alpha-reduced pregnane steroids are potent positive allosteric modulators of the gamma-aminobutyric acid type A (GABA(A)) receptor.
Akwa Y, Baghai TC, Baker ER, Barrett-Connor E, Bicikova M, Bitran D, Bloch M, Brambilla F, Brambilla F, Brambilla F, Cornelius Schüle, Crawley JN, Dalton K, Daniela Eser, Dennerstein L, Dong E, Elena Romeo, Eser D, Evans RM, Fabian TJ, Freeman E, Freeman EW, Friess E, George MS, Goodyer IM, Guidotti A, Heydari B, Heydary B, Kita A, Koszycki D, Lawrie TA, Maayan R, Magill PJ, Majewska MD, Majewska MD, Majewska MD, Matsumoto K, Meieran SE, Melchior CL, Melchior CL, Mensah-Nyagan AG, Mienville JM, Monnet FP, Padberg F, Papadopoulos V, Paul SM, Purdy RH, Rainer Rupprecht, Reddy DS, Reddy DS, Reddy DS, Rodgers RJ, Romeo E, Rupprecht R, Rupprecht R, Schmidt PJ, Schule C, Schule C, Semeniuk T, Serra M, Serra M, Strohle A, Strohle A, Strohle A, Strous RD, Takebayashi M, Thomas C. Baghai, Tollefson GD, Trauger JW, Urani A, Uzunov DP, Uzunova V, Uzunova V, Uzunova V, Vanselow W, Wieland S, Wolkowitz OM, Wolkowitz OM, Wu FS, Zwanzger P   +79 more
core   +1 more source

Vaginal progesterone decreases preterm birth ≤ 34 weeks of gestation in women with a singleton pregnancy and a short cervix: an updated meta‐analysis including data from the OPPTIMUM study

Ultrasound in Obstetrics and Gynecology, 2016
To evaluate the efficacy of vaginal progesterone administration for preventing preterm birth and perinatal morbidity and mortality in asymptomatic women with a singleton gestation and a mid‐trimester sonographic cervical length (CL) ≤ 25 mm.
Roberto Romero, K. Nicolaides, A. CONDE-AGUDELO, J. O'Brien, E. Cetingoz, E. Fonseca, G. Creasy, S. Hassan, S. Hassan   +8 more
semanticscholar   +1 more source