Effects of 17α-methyltestosterone on the dorsal pad and tubercles of fathead minnows (Pimephales promelas)

1974 ◽  
Vol 52 (8) ◽  
pp. 1031-1038 ◽  
Author(s):  
R. J. F. Smith
Keyword(s):  
Breeding Season ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Pimephales Promelas ◽  
Fathead Minnows ◽  
Male And Female ◽  
Mucus Cells

The formation of breeding tubercles and a mucus-secreting dorsal pad in male and female fathead minnows is induced by 17α-methyltestosterone. Neither lactotrophic hormone (LTH) nor human chorionic gonadotropin induced dorsal pad or tubercle formation in the dosages used. LTH (with androgen) may delay loss of mucus cells at the end of the breeding season.

scholarly journals Hyperglycosylated human chorionic gonadotropin in blastocyst culture medium of male and female human embryos

2019 ◽  
Vol 112 (3) ◽  
pp. e126 ◽  
Author(s):  
Georgi Stamenov Stamenov ◽  
Kristina Nikolova ◽  
Magdalena Vasileva ◽  
Ivaylo Rangelov ◽  
Rumiana Ganeva ◽  
...  
Keyword(s):  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Culture Medium ◽  
Human Embryos ◽  
Blastocyst Culture ◽  
Male And Female ◽  
Hyperglycosylated Human Chorionic Gonadotropin

scholarly journals Effects of Human Chorionic Gonadotropin and Progesterone Administration on Porphyrin Biosynthesis and Histology of the Harderian Glands in Male and Female Syrian Hamsters1

1992 ◽  
Vol 47 (3) ◽  
pp. 307-315 ◽  
Author(s):  
Armando Menendez-Pelaez ◽  
Maria J. Rodriguez-Colunga ◽  
Carmen Rodriguez ◽  
Delio Tolivia ◽  
Pedro Dominguez
Keyword(s):  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Male And Female ◽  
Harderian Glands

Male fathead minnows (Pimephales promelas Rafinesque) retain their fright reaction to alarm substance during the breeding season

1976 ◽  
Vol 54 (12) ◽  
pp. 2230-2231 ◽  
Author(s):  
R. J. F. Smith
Keyword(s):  
Breeding Season ◽  
Pimephales Promelas ◽  
Field Tests ◽  
Alarm Substance ◽  
Skin Extract ◽  
Fathead Minnows ◽  
Fright Reaction ◽  
Alarm Substance Cells

In laboratory and field tests, breeding male fathead minnows respond to conspecific skin extract with a fright reaction despite their own seasonal loss of alarm substance cells. Their fright reaction is facilitated by the presence of other fatheads.

2nd-Trimester Maternal Serum Human Chorionic Gonadotropin and α-Fetoprotein Levels in Male and Female Fetuses with Down Syndrome

2005 ◽  
Vol 20 (3) ◽  
pp. 235-238 ◽  
Author(s):  
Ofer Lehavi ◽  
Orna Aizenstein ◽  
Mark I. Evans ◽  
Yuval Yaron
Keyword(s):  
Down Syndrome ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Maternal Serum ◽  
Male And Female

The endometrium: receptivity, implantation, and endometrial cancer as endocrine disease

2011 ◽  
pp. 1272-1287
Author(s):  
Markku Seppälä ◽  
Linda C. Giudice
Keyword(s):  
Endometrial Cancer ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Human Life ◽  
Maternal Serum ◽  
Endocrine Disease ◽  
Male And Female ◽  
Morula Stage ◽  
Endometrium Receptivity ◽  
Serum And Urine

In biological terms, human life is a continuum in which male and female gametes fuse in fertilization (conception) to form an embryo. Usually fertilization takes place in the distal part of fallopian tube where the embryo remains 2–3 days, dividing at 12–15 h intervals. On day 3 the embryo has 8 cells, on day 4 a morula stage has been reached, and on day 5 the embryo forms a blastocyst and enters the uterus. The embryo hatches before it implants in the endometrium, most implantations (86%) occurring between day LH +8 and day LH +11 (1). The most reliable clinical sign of implantation is secretion of human chorionic gonadotropin (hCG) from the embryonic trophoblast into maternal serum and urine.

scholarly journals How comparable are total human chorionic gonadotropin (hCGt) tumour markers assays?

2020 ◽  
Vol 58 (3) ◽  
pp. 438-444 ◽  
Author(s):  
Carel J. Pretorius ◽  
Stephen du Toit ◽  
Urs Wilgen ◽  
Sandra Klingberg ◽  
Mark Jones ◽  
...  
Keyword(s):  
Confidence Interval ◽  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Clinical Management ◽  
Tumour Marker ◽  
Systematic Difference ◽  
Molecular Forms ◽  
Male And Female ◽  
Off Label ◽  
Regression Slopes

AbstractBackgroundTotal human chorionic gonadotropin (hCGt) tumour marker testing is regarded as an “off label” application for most commercial methods. We compared four assays in patients with a hCGt tumour marker request. We hypothesised that regression slopes would be altered and that outliers would be more common with tumour marker than with pregnancy samples if the detection of malignancy associated hCG molecular forms differed amongst assays. Further such systematic differences would be obvious and large enough to change clinical management decisions.ResultsWe measured hCGt in 390 samples from 137 females and 253 males with a tumour marker request and 208 pregnancy controls with the following methods: Access Total βhCG, Architect Total-βhCG, Cobas hCG + β and Immulite HCG. The between method regressions determined on tumour marker and pregnancy samples were not significantly different. The outlier rates were similar for male and female tumour marker and the pregnancy groups: 1.6% (95% confidence interval [CI] 0%–3.1%), 2.2% (95% CI 0%–4.7%) and 2.9% (95% CI 0.6%–5.2%). The outliers were randomly distributed amongst the methods and we were confident that they would not adversely influence clinical decisions.ConclusionsThe hCGt results were clinically equivalent with no systematic difference amongst the four assays.

scholarly journals PENGARUH PEMBERIAN PMSG DAN HCG TERHADAP PENINGKATAN JUMLAH KELAHIRAN HAMSTER CAMPBELL (Phodopus campbelli) (Effect of PMSG and hCG to Increase Birth Number in Campbell’s Hamsters (Phodopus campbelli))

2016 ◽  
Vol 10 (1) ◽  
pp. 59
Author(s):  
Novi Afriani Nur Afriani Nur ◽  
Tongku Nizwan Siregar ◽  
Hamdan Hamdan ◽  
Idawati Nasution ◽  
Cut Nila Thasmi ◽  
...  
Keyword(s):  
Chorionic Gonadotropin ◽  
Human Chorionic Gonadotropin ◽  
Average Amount ◽  
Male And Female ◽  
Phodopus Campbelli ◽  
Serum Gonadotropin

The aim of this study was to determine the effect of superovulation induction through Pregnant Mare’s Serum Gonadotropin (PMSG) and Human Chorionic Gonadotropin (hCG) injection to increased birth number in Campbell’s hamsters (Phodopus campbelli). This study used 10 unpregnant female Campbell’s hamster, aged 4-6 months, weighing of 25-30 grams. Hamsters were divided into K1 and K2, each consist of five hamsters. K1 injected with 1 ml physiologic NaCl, while K2 intraperitoneally injected with PMSG and hCG in 5 IU. Mating was held after injection. Male and female hamsters were put in one box with ration of 1:1. The observation of vagina plug was done in order to confirm whether the mating successes or not. The average amount of fetus birth through superovulation on K1 and K2 were 3.40±1.3 and 7.80±1.1, respectively. In conclusion, the superovulation induction using the combination of PMSG and hCG increase birth number on Campbell’s hamsters.

Effects of body size, body condition, and breeding state on responses to alarm cues by fathead minnows

2006 ◽  
Vol 84 (9) ◽  
pp. 1351-1357 ◽  
Author(s):  
M.S. Pollock ◽  
R.J. Pollock ◽  
D.P. Chivers
Keyword(s):  
Breeding Season ◽  
Body Condition ◽  
Standard Length ◽  
Gonadosomatic Index ◽  
Pimephales Promelas ◽  
The Body ◽  
Antipredator Behaviour ◽  
Alarm Cues ◽  
Fathead Minnows ◽  
Nonbreeding Season

There is often considerable variation in the intensity of behavioural responses of prey to predation cues. The purpose of the current study was to determine the role of standard length (a correlate of age), body condition (a measure of energy reserves, calculated by mass/(standard length)3), and gonadosomatic index (state of reproduction, calculated by gonad mass / body mass) in the responses of fathead minnows (Pimephales promelas Rafinesque, 1820) to damage-release alarm cues. Our data indicate that during the nonbreeding season longer/older minnows exhibited significantly increased antipredator responses compared with younger individuals. However, the significance of these correlations ceased during the breeding season. Data from the same trials failed to reveal a significant correlation between the intensity of antipredator behaviour and the body condition before or during the breeding season; the intensity of a minnow’s antipredator response was also not significantly correlated with its gonadosomatic index. These data are important in understanding factors affecting antipredator behaviour of minnows, as well as aiding researchers in determining potential time of year confounds in future studies.

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