THE EFFECTS OF SEX HORMONES ON THE DEVELOPMENT OF THE RIGHT GONAD IN FEMALE FOWL<sup>1</sup>

Taber, Elsie; Salley, Kathryn W.

doi:10.1210/endo-54-4-415

Cited by 12 publications

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“…On the other hand, the maturation of steroid-secreting interstitial cells in the medullary cord has begun (Willier, 1939). The administration of oestrogenic hormone has been reported to inhibit the growth and functional activity of the interstitial cells in the medullary cord region (Taber & Salley, 1954;Taber et al, 1958Taber et al, , 1964. This inhibiting effect could probably be attributed to the suppression of ornithine decarboxylase activity by oestrogen as reported here.…”

Section: Resultssupporting

confidence: 68%

Studies on sex-organ development. Effect of hormones on ornithine decarboxylase activity in the developing chick ovary

Teng

1980

Biochemical Journal

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The response of ornithine decarboxylase activity to hormones in the embryonic left ovary was measured throughout the stages of development. During the early stage of ovarian development (9th day of incubation), the ornithine decarboxylase activity (in terms of pmol CO(2)/30min per mg of protein) was high (766); it decreased from the 10th to the 12th day (575-239), increased slightly from the 13th to the 15th day (306) and finally fell to a low value (192-20) from the 18th day of development to birth. Administration of an optimal dose of oestrogen to the 9-10-day embryo stimulated the ovarian ornithine decarboxylase activity by 48-53%. If the same dose of oestrogen was administered to the 15-18-day embryo, the ovarian enzyme activity was suppressed by 32-43%. This biphasic response to oestrogen for enzyme induction is characteristic of the developing ovary and is not observed in other genital organs of the chick. In the early developmental stage (9-10th day) testosterone has no effect on ovarian ornithine decarboxylase activity, but in the late stage testosterone inhibits the activity by 41%. Organ culture techniques have been used to test the ovarian response to lutropin (luteinizing hormone). Lutropin stimulated ornithine decarboxylase activity by approx. 99-155% in the ovary of the early embryonic stage (10-13th day), and by 175-200% in the ovary of the late embryonic stage (15-18th day). The alteration in enzyme activity in the ovary as assayed in vitro during development is not due to the effect of the size of the endogenous ornithine pool. The relationship of ornithine decarboxylase activity to the morphological and biochemical changes in the developing ovary is discussed.

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Section: Resultssupporting

confidence: 68%

Studies on sex-organ development. Effect of hormones on ornithine decarboxylase activity in the developing chick ovary

Teng

1980

Biochemical Journal

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“…The present observations agree with Benoit (1923,1932,1950) and Domm (1927), who assumed an inhibitory influence exerted by the left ovary on the right, depressing the growth of the latter. The rudimentary gonad proliferates only in the absence of the left ovary (Kornfeld‐and Nalbandov,1954; Taber and Salley,1954; Kornfeld,1958; Taber et al,1958; Groenendijk‐Huijbers,1965), but this statement deserves further research.…”

Section: Discussionmentioning

confidence: 99%

Histological and Stereological Changes in Growing and Regressing Chicken Ovaries During Development

González-Morán

2011

The Anatomical Record

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The aim of this study was to evaluate the sequence of the histological and stereological changes that occur in diverse components of left growing and right regressing ovaries of Gallus domesticus as well as the variations in the number and size of the different cell subpopulations from 8-day-old chicken embryo to 4-week-old chickens. Results indicate a bilateral asymmetry in favor of the left ovary at all ages studied. The left ovary shows cortex and medulla, but the right ovary has no cortex, only a medulla. Stereological results show in the left ovary an increase in total volume of all components of the ovarian medulla with advancing development. The right ovary follows a similar pattern until the age of 1-day-old chicken, to regress afterward, thereby, reducing the total volume of blood vessels, lacunar channels, and interstitium, but increasing the total volume of interstitial cells as development progresses; consequently, the total volume of interstitial cells is the dominant component in the right ovary of 4-week-old chickens. Results also reveal that the increase in total volume of interstitial cells in the left ovary at all ages and in the right ovary from 8-day-old chicken embryo to 1-day-old chicken is due to hyperplasia and cell hypertrophy of interstitial cells; hence, in the right ovary, cell hypertrophy is the main cause for the increase in the total volume of interstitial cells from 1-week-old to 4-week-old chickens. Anat Rec, 294:893-904, 2011. V V C 2011 Wiley-Liss, Inc.Key words: histology; stereology; left ovary; right ovary; chickenIn vertebrates, the reproductive system arises as bilateral anlagen, and consequently paired genital organs are commonly found in the adult. In birds, the female reproductive system is unique. Although paired anlagen appear, only the left genital primordia develop further to functional organs, except in birds of prey (Jacob and Bakst, 2007).In the chick, formation of the ovary differs between the right and left sides. In the left ovary, whose development proceeds normally, cortical cords (secondary cords) extend inward from the gonadal epithelium. From 7 days of incubation onward, the cords develop to form a cortex, whereas the medulla is composed of epithelium derived from medullary cords (primary cords) and their enlarged inner spaces (medullary lacunae). In contrast, the right ovary stops further development from 7 days onward. This is due to the absence of secondary cord formation; the right ovary has only a medulla composed of the epithelium of the medullary cord and enlarged lacunae. Eventually, the right ovary becomes smaller than the left (Romanoff, 1960;Stahl and Carlon, 1973;Ebensperger et al

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“…Development of the rudimentary right gonad of the ovariectomized domestic fowl can be inhibited with exogenous estrogen, and to a lesser extent with androgen (Kornfeld and Nalbandov, 1954;and Taber and Salley, 1954). All attempts to accelerate the growth -of the rudimentary gonads or to maintain them in hypophysectomized poulards with mammalian gonadotrophic hormones were unsuccessful.…”

Section: Energy Metabolism and Digestionmentioning

confidence: 99%

A Survey of Recent Advances in Poultry Physiology

Sturkie

1958

Poultry Science

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THE EFFECTS OF SEX HORMONES ON THE DEVELOPMENT OF THE RIGHT GONAD IN FEMALE FOWL¹

Cited by 12 publications

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Studies on sex-organ development. Effect of hormones on ornithine decarboxylase activity in the developing chick ovary

Studies on sex-organ development. Effect of hormones on ornithine decarboxylase activity in the developing chick ovary

Histological and Stereological Changes in Growing and Regressing Chicken Ovaries During Development

A Survey of Recent Advances in Poultry Physiology

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THE EFFECTS OF SEX HORMONES ON THE DEVELOPMENT OF THE RIGHT GONAD IN FEMALE FOWL1

Cited by 12 publications

References 0 publications

Studies on sex-organ development. Effect of hormones on ornithine decarboxylase activity in the developing chick ovary

Studies on sex-organ development. Effect of hormones on ornithine decarboxylase activity in the developing chick ovary

Histological and Stereological Changes in Growing and Regressing Chicken Ovaries During Development

A Survey of Recent Advances in Poultry Physiology

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THE EFFECTS OF SEX HORMONES ON THE DEVELOPMENT OF THE RIGHT GONAD IN FEMALE FOWL¹