Relationship of oestrogen and progesterone and their oviductal receptors in laying and non-laying 5-year-old hens

1985 ◽  
Vol 106 (3) ◽  
pp. 343-348 ◽  
Author(s):  
W. C. Okulicz ◽  
D. J. Fournier ◽  
H. Esber ◽  
T. N. Fredrickson
Keyword(s):  
Progesterone Receptor ◽  
Plasma Levels ◽  
Oestrogen Receptor ◽  
Laying Hens ◽  
Reproductive Function ◽  
Egg Laying ◽  
Ovulatory Cycle ◽  
Relationship Of ◽  
The Relationship ◽  
Domestic Hen

ABSTRACT This study focuses on the relationship of ageing to reproductive function in the domestic hen. Reproductive function was assessed by egg-laying records of hens from the same flock of 4, 5 and 6 years of age. Egg laying decreased with advancing age and the percentage of non-laying hens increased. During an ovulatory cycle, plasma levels of oestrogen and progesterone (including the preovulatory surge) were similar in both the 5-year-old and 1-year-old laying hens. In both young and old non-laying hens, the preovulatory surge of progesterone was absent. Levels of oestrogen were similar for all hens, but the oestrogen-dependent oviduct was atrophied in non-laying 5-year-old hens. This reduction in oviductal size was correlated with reduced levels of magnal nuclear oestrogen receptor and cytosol progesterone receptor. These results suggest a refractoriness of the oviduct to oestrogen stimulation in the ageing hen. J. Endocr. (1985) 106, 343–348

MORPHOLOGY OF THE FEMALE TERMINALIA IN LEPIDOPTERA, AND ITS TAXONOMIC SIGNIFICANCE

1972 ◽  
Vol 104 (7) ◽  
pp. 1055-1071 ◽  
Author(s):  
Akira Mutuura
Keyword(s):  
Morphological Characters ◽  
Egg Laying ◽  
Food Plants ◽  
Taxonomic Significance ◽  
Genealogical Tree ◽  
Genital Opening ◽  
Phylogenetic Classification ◽  
Relationship Of ◽  
The Relationship

AbstractIn the phylogenetic classification of the Lepidoptera, the position of the genital opening and its modifications help to clarify the relationship of the Zeugloptera to the lepidopterous suborders. Three different systems of the suborder classification of the Lepidoptera, into Homoneura and Heteroneura (Tillyard, Imms, etc.), Monotrysia and Ditrysia (Borner), and Dacnonypha, Monotrysia, and Ditrysia (Hinton), are not supported by evidence obtained in the study of the female genitalia.The development of the female terminalia is closely associated with the mode of oviposition. Several types of female terminalia are found in the primitive Lepidoptera (Hepialidae, Neopseustidae, Tischeriidae, Lyonetiidae, Agathiphagidae, Tineidae, Nepticulidae, and Eriocraniidae). They are divided into four categories: hepialid type — the eggs are dropped randomly; typical lepidopterous type — the eggs are laid on the surface of food plants; eriocraniid type — the eggs are laid inside the food plants; tineid type — the eggs are laid in crevices of food. Each of the types is derivable from the types occurring in Neopseustidae, Tischeriidae, Agathiphagidae, and Eriocraniidae, respectively. These types are still far removed from the type of female terminalia in Micropterygidae of the Zeugloptera.The modes of egg-laying as well as the morphological characters of the female genitalia must be taken into consideration in suborder classification of the Lepidoptera.A genealogical tree based on the female terminalia suggests four main branches: hepialid branch — includes Neopseustidae and Prototheoridae; typical lepidopterous branch — includes all Ditrysia and Nepticulidae; tineid branch — includes only Tineidae; eriocraniid branch — includes Incurvariidae, Prodoxidae, Adelidae, and Heliozelidae.

The relationship of COX-2 expression with estrogen receptor, progesterone receptor and prognostic parameters in endometrial carcinomas

2010 ◽  
Vol 36 (3) ◽  
pp. 560-566 ◽  
Author(s):  
Sevinç Hallaç Keser ◽  
Aylin Ege Gül ◽  
Nagehan Özdemir Barışık ◽  
Çağlar Çakır ◽  
Sibel Şensu ◽  
...  
Keyword(s):  
Estrogen Receptor ◽  
Progesterone Receptor ◽  
Prognostic Parameters ◽  
Cox 2 ◽  
Endometrial Carcinomas ◽  
Relationship Of ◽  
The Relationship

The interrelationship of beta endorphin, ACTH and cortisol in depressive illness: a controlled study

1987 ◽  
Vol 17 (1) ◽  
pp. 31-37 ◽  
Author(s):  
Rosemary Ball ◽  
Trevor Howlett ◽  
Trevor Silverstone ◽  
Lesley Rees
Keyword(s):  
Plasma Levels ◽  
Depressive Illness ◽  
Endogenous Opioids ◽  
Controlled Study ◽  
Beta Endorphin ◽  
Depressed Patients ◽  
Before And After ◽  
Relationship Of ◽  
The Relationship ◽  
Pituitary Adrenal Axis

SynopsisPlasma cortisol, ACTH and beta endorphin were measured before and after dexamethasone in 8 severely depressed patients and 8 age- and sex-matched controls to examine the relationship of ACTH and endogenous opioids to cortisol in depression. Despite having significantly higher plasma levels of cortisol than the controls, the depressed patients did not have correspondingly elevated plasma levels of ACTH. Beta-endorphin levels were also similar in the two groups. All three hormones suppressed to some degree after dexamethasone, but cortisol suppressed less in patients than controls. Our findings suggest that in severe depressive illness abnormalities exist in the hypothalamic–pituitary–adrenal axis peripherally as well as centrally.

scholarly journals The phenomenon of rosacea-rushes (theoretical aspects)

2021 ◽  
Vol 26 (2) ◽  
pp. 33-39
Author(s):  
V.A. Bocharov ◽  
V.V. Bocharova ◽  
M.M. Lebediuk ◽  
A.A.S. Sarayreh ◽  
L.V. Kuts
Keyword(s):  
Clinical Manifestations ◽  
Reproductive Function ◽  
Local Heat ◽  
Cellular Level ◽  
Reproductive Age ◽  
Theoretical Substantiation ◽  
Promising Area ◽  
The Face ◽  
Relationship Of ◽  
The Relationship

According to the decisions of international scientific forums, the problem of phenomenon of rosacea (acne rosacea), a common dermatosis with numerous unexplained aspects of etiopathogenesis is a promising area of modern medical research. The aim of the study was theoretical substantiation of the essential features of the mechanisms of occurrence, development and clinical manifestations of the first signs of rosacea in women of reproductive age. The use of a systematic analytical methodical approach to assess the data of clinical and laboratory examinations of women with rosacea, conducted in different regions of the world, allowed to establish the originality of such manifestations of dermatosis as the appearance of unexpected rushes to limited areas of the face, accompanied by local redness and local heat areas of the skin differring significantly from similar rushes in other diseases or syndromes (menopause, migraine, etc.). It is established that the peculiarity of the relationship of these clinical characteristics (from English: rush, ruddy, redness, rosacea, reproductive age of women, reaction) allows to indicate the first signs of dermatosis as a phenomenon inherent in this disease Rush-Ruddy-Rosacea-Reproduce-Reaction (abbreviated – «5-R»), the key pathophysiological target of which (as well as the disease as a whole) is a disorder of a set of hierarchically dependent mechanisms of the evolutionarily determined motivational need to ensure reproductive function in women (both at the cellular level and extracellular structures of the ovaries, and at different levels of subcortical formations and centers of the cortex of the cerebral hemispheres). The phenomenon of rosacea rush is closely related to other phenomena of this dermatosis – hypersensitivity of bradykinin receptors, actinic elastosis, development of post erythematous telangiectasia. The prospect of further research on the problem of rosacea is to study the relationship of disorders in the functional systems of molecules of signaling compounds of different classes (hormones, eicosanoids, neuropeptides, kinins, cytokines and others) in the pathogenesis of the disease.

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