Sexually related changes in plasma calcitonin levels in Japanese quail

Dacke, C. G.; Furr, B. J. A.; Boelkins, J. N.; Kenny, Alexander D.

doi:10.1016/0300-9629(76)90057-8

Cited by 14 publications

(6 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…This is, to our knowledge, the first account of such a relationship, which was suggested before by Sizemore & Go (1979( , Hillyard et al (1978, Deftos et al (1980) andTorring et al (1985). Interestingly, physiological CT levels are thought to be influenced by gonadal hormones in different animal species, as found by Dacke et al (1976) and by Bjijrnsson et al (1986).…”

Section: Discussionsupporting

confidence: 59%

Does Testosterone Influence the Post‐stimulatory Levels of Calcitonin in Normal Men?

Garcia-Ameijeiras

Torre

Rodrı́guez-Espinosa

et al. 1987

Clinical Endocrinology

View full text Add to dashboard Cite

We have analysed the sex difference of calcitonin (CT) levels after combined stimulation with calcium and pentagastrin (Ca-PG) in the normal population, and the relationship of the post-stimulatory CT levels with free testosterone (FT). We have also studied the correlation between CT values and the anthropometric parameters, body mass index (BMI) and body surface area (BS), as well as the relationship between CT levels and calcium. A positive and statistically significant correlation was found between post-stimulatory CT and the increment over the base-line of CT and basal FT, and with the anthropometric parameters. However, the increment of CT and the peak values of CT did not have any significant correlation with the Ca levels (basal or post-stimulation). We conclude that the enhanced CT response found in normal men compared to normal women is at least partially determined by the higher testosterone levels found among normal men.

show abstract

Section: Discussionsupporting

confidence: 59%

Does Testosterone Influence the Post‐stimulatory Levels of Calcitonin in Normal Men?

Garcia-Ameijeiras

Torre

Rodrı́guez-Espinosa

et al. 1987

Clinical Endocrinology

View full text Add to dashboard Cite

show abstract

“…In the Japanese quail (Coturnix coturnix japonica), castration of male birds considerably reduces the calcitonin level. This therefore indicates a relationship between calcitonin and gonadal hormone activity (Dacke et al, 1976) and that the possibly dimorphic pattern of ossification in Silesaurus may be an ancestral archosaur feature. As observed in C. coturnix, the females exhibit a three-fold increase in plasma calcitonin levels shortly before maturity, whereas males have more stable levels (Dacke et al, 1976).…”

mentioning

confidence: 89%

“…This therefore indicates a relationship between calcitonin and gonadal hormone activity (Dacke et al, 1976) and that the possibly dimorphic pattern of ossification in Silesaurus may be an ancestral archosaur feature. As observed in C. coturnix, the females exhibit a three-fold increase in plasma calcitonin levels shortly before maturity, whereas males have more stable levels (Dacke et al, 1976). It is suggested that this surge in plasma calcitonin levels might be associated with the appearance of additional ossifications in the Silesaurus femora.…”

mentioning

confidence: 89%

“…The additional ossifications of these fossil forms appeared during maturity (Raath, 1990). This may correspond with an increase in calcitonin levels shortly before maturity, because it is observed in modern quail females (Dacke et al, 1976).…”

mentioning

confidence: 90%

“…In fishes (salmon), an increase of calcitonin level marks puberty in both sexes (Fouchereau-Peron et al, 1990). Secretion of this hormone is influenced by sex hormones: estrogens and androgens (Dacke et al, 1976).…”

mentioning

confidence: 99%

See 2 more Smart Citations

Skeletal variation and ontogeny of the Late Triassic DinosauriformSilesaurus opolensis

Piechowski

Tałanda

Dzik

2014

Journal of Vertebrate Paleontology

View full text Add to dashboard Cite

A principal component analysis (PCA) performed for a set of 24 measurements on 33 femora and 15 measurements on 20 ilia of Silesaurus opolensis from the early Late Triassic of Krasiej ow, southern Poland, shows that this sample is highly variable but probably monospecific. Most of the morphological variation is concentrated in the muscle attachments and proportions of bones, which significantly change in both size and position during ontogeny. Despite the small sample size, femora of smaller individuals have less flattened shafts and a more sinusoidal appearance. In many large specimens, proximal parts of muscle tendons are ossified at their attachment site on femora and remain attached to the bone in the largest specimens. The specimens with attached ossifications are interpreted as mature females that were statistically larger than proposed males. It is suggested that ossifications developed in females under calcitonin control. The intrapopulation variability of ilia is high, but less dependant on ontogeny. The population represented by a few specimens from the lower level at Krasiej ow may represent a different stage in the evolution of the species than that from the upper horizon.

show abstract

The influence of sex steroid hormones on plasma calcitonin response to the calcium clamp in normal subjects

Törring

Bucht

Sjöberg

1987

Journal of Bone and Mineral Research

View full text Add to dashboard Cite

The influence of sex steroid hormones on plasma calcitonin levels in healthy subjects was studied in 15 males and 10 premenopausal (PREMF) and 12 postmenopausal females (PMF). A standardized ionized calcium stimulus was achieved by means of the calcium clamp technique, and a sensitive RIA was used to determine immunoreactive CT (iCT) in plasma. Plasma iCT levels increased in response to the calcium clamp with an initial peak at 15 or 30 min. The iCT levels then declined but remained at an elevated level for the rest of the 180-min infusion period in all three groups. In males a positive correlation was found between the serum testosterone levels at 0 min and the estimates for initial iCT response, i.e., the change between 0 and 15 min (r = 0.80, n = 11, p less than 0.01), between 0 and 30 min (r = 0.56, n = 15, p less than 0.05) and between 0 and the maximum value (r = 0.68, n = 15, p less than 0.01). In the two female groups no such correlation was found. Serum 17 beta-estradiol or dehydroepiandrosterone sulfate concentrations were not correlated either to basal iCT levels or to the iCT response to the calcium clamp. PMF had lower levels of 17 beta-estradiol than PREMF (p less than 0.001), while the testosterone levels were similar. The iCT levels and response to the calcium clamp showed no significant difference in the two groups. The results indicate that sex difference in the plasma CT levels may be related to different testosterone levels.(ABSTRACT TRUNCATED AT 250 WORDS)

show abstract

Sexually related changes in plasma calcitonin levels in Japanese quail

Cited by 14 publications

References 12 publications

Does Testosterone Influence the Post‐stimulatory Levels of Calcitonin in Normal Men?

Does Testosterone Influence the Post‐stimulatory Levels of Calcitonin in Normal Men?

Skeletal variation and ontogeny of the Late Triassic DinosauriformSilesaurus opolensis

The influence of sex steroid hormones on plasma calcitonin response to the calcium clamp in normal subjects

Contact Info

Product

Resources

About