Results 61 to 70 of about 166,829 (242)

Marginal Changes in Semen Quality Over Three Decades (1996‒2022) Among 8320 Men in the Danish Young Men Study (DYMS): Cohort Profile and Trends

Andrology, EarlyView.
ABSTRACT Background Since the 1990s, declining sperm counts and increasing testicular cancer rates have raised worldwide concern about male reproductive health, including in Denmark. This prompted a prospective population‐based study with annual surveillance of semen quality.
Lærke Priskorn, Cille Baslund‐Storch, Laura S. Hansen, Astrid L. Beck, Ann H. Hansen, Stine A. Holmboe, Loa Nordkap, Anne Kirstine Bang, Rune Lindahl‐Jacobsen, Christine Dalgård, Anna‐Maria Andersson, Tina K. Jensen, Anders Juul, Niels Jørgensen   +13 more
wiley   +1 more source

Application of radioimmunoassay techniques to the identification of narcotic substances in biological fluids

, 1976
Radioimmunoassay with a com. kit was more sensitive and rapid than gas or thin-layer chromatog. for detg. morphine (I) [57-27-2], I-like narcotics, and barbiturates in the urine of drug addicts or of persons who had died after taking narcotics.
F. De Ferrari, E. Saligari, F. Lodi, V. Gambaro, E. Marozzi   +4 more
core   +1 more source

Plasma testosterone and 11-ketotestosterone levels of male pacu Piaractus mesopotamicus (Cypriniformes, Characidae)

Brazilian Journal of Medical and Biological Research, 1997
The levels of testosterone (T) and 11-ketotestosterone (11-KT) of the South American pacu Piaractus mesopotamicus were determined by radioimmunoassay during two stages of the reproductive cycle, i.e., resting and maturation, and the gonadosomatic index ...
R. Gazola, M.I. Borella
doaj   +1 more source

Testosterone Replacement Therapy in Adolescents and Young Adults With Prader‐Willi Syndrome: Efficacy and Effects on Behaviour

Clinical Endocrinology, EarlyView.
ABSTRACT Context Hypogonadism in Prader‐Willi syndrome (PWS) is associated with decreased bone mineral density (BMD) in male adolescents and adults. Testosterone Replacement Therapy (TRT) improves BMD and sexual maturation, but TRT could aggravate pre‐existing challenging behaviour in male patients with PWS.
Wiebe R. Flamman, Demi J. Trueba‐Timmermans, Lionne N. Grootjen, Laura C. G. de Graaff, Joyce M. Geelen, Janielle A. E. M. van der Velden, Edmond H. H. M. Rings, Anita C. S. Hokken‐Koelega, Gerthe F. Kerkhof   +8 more
wiley   +1 more source

In vitro induction of de novo thyroid hormone synthesis in Muscovy ducks (Carirana moschata), common ducks (Anas platyrhynchos domesticus), and mule ducks by ovine thyroid-stimulating hormone

The Journal of Poultry Science
Thyroid hormones regulate a wide range of physiological functions and are synthesized in response to thyroid-stimulating hormone (TSH). The present study aimed to examine the regulatory influence of heterologous TSH on thyroid activity ...
Hung Chuang, Jou-Ching Lin, Ching-Feng Weng, Pin-Chi Tang, Wei-Tung Huang   +4 more
doaj   +1 more source

Development and validation of a solid phase radioimmunoassay system for the determination of pregnancy-associated glycoproteins in bovine serum [PDF]

Kafkas Universitesi Veteriner Fakültesi Dergisi
The Pregnancy-Associated Glycoproteins (PAGs) belong to aspartic protease family and are synthesized by trophoblast cells of ruminant placenta and secreted into maternal blood and milk.
Aldjia BENABDELAZIZ, Samia BOUDJEMAI, Ahmed Amine ABDELLI, Rachid KHELILI, Rachid KAIDI, Nora MIMOUNE   +5 more
doaj   +1 more source

Evaluating EndoC βH5 pseudoislets as a model for human islet transplantation

Diabetic Medicine, EarlyView.
Abstract Aims The EndoC βH5 cell line represents a promising human β‐cell model for preclinical diabetes research. Indeed, EndoC βH5 cells aggregate into islet‐like organoids, secrete insulin in a glucose‐dependent manner, and express a variety of β‐cell functional markers.
Lydia F. Daniels Gatward, William T. Blackstone Whines, Tzu‐Wen Hong, Rosie Sullivan, Jessica Starikova, Adya Lonsane, Ryea Arora, Victoria Salem, Min Zhao, Peter M. Jones, Aileen F. J. King, Shanta J. Persaud   +11 more
wiley   +1 more source

A sensitive radioimmunoassay for isepentenyladenosine

, 1977
A sensitive radioimmunoassay for the nucleoside isopentenyladenosine (iA) by using iA-specific antibodies and a nitrocellulose membrane filtration technique is described.
Humayun, M. Z., T.M. Jacob, Khan, Saleem A., M.Z. Humayun, Saleem A. Khan, Jacob, T. M.   +5 more
core   +2 more sources

Characterising differential maturation of stem cell‐derived islets in mice: Graft function and transcriptomic analysis

Diabetic Medicine, EarlyView.
Abstract Aims Stem cell‐derived islets (SC‐islets) offer the potential to revolutionise type 1 diabetes treatment. However, functional maturation in vivo is variable, suggesting that specific, but as‐yet undefined, environmental cues are critical. We aimed to identify pathways associated with SC‐islet in vivo maturation in mice, assess early functional
Rosie Sullivan, Lydia F. Daniels Gatward, Tzu‐Wen Hong, Zekun Lyu, William T. Blackstone Whines, Claire Duff, Ryea Arora, Adya Lonsane, Min Zhao, Victoria Salem, Aileen J. F. King, Peter M. Jones, Shanta J. Persaud   +12 more
wiley   +1 more source

Adrenal venous sampling criteria for chemiluminescent enzyme immunoassay as a preferable alternative to radioimmunoassay in primary aldosteronism

Endocrine Journal
Plasma aldosterone concentration (PAC) was routinely measured using radioimmunoassay (RIA); however, the RIA kit was discontinued in March 2021 in Japan.
Kazuki Nakai, Yuya Tsurutani, Koki Irie, Kyoko Teruyama, Sachiko Suematsu, Seishi Matsui, Kohzoh Makita, Jun Saito, Masao Omura, Tetsuo Nishikawa   +9 more
doaj   +1 more source