abstract：:It has now been well documented that the normal and tumorous canine mammary glands can be extra-pituitary sites of substantial growth hormone (GH) synthesis. Until now, attempts to reproduce the GH synthesis in-vitro using canine mammary explants or mammary tumor cells have not been successful. Therefore, the response...

journal_title：Domestic animal endocrinology

authors： van Garderen E,Swennenhuis JF,Hellmén E,Schalken JA

更新日期：2001-02-01 00:00:00

abstract：:The experiments were conducted to determine the effects of the administration of growth hormone-releasing peptide-2 (GHRP-2, also named KP102), both orally by gavage and in feed, on the release of growth hormone (GH) in swine and to investigate whether attenuation of the GH response occurs after short-term treatment w...

journal_title：Domestic animal endocrinology

authors： Phung LT,Sasaki A,Lee HG,Vega RA,Matsunaga N,Hidaka S,Kuwayama H,Hidari H

更新日期：2001-01-01 00:00:00

abstract：:Eighteen crossbred boars, three siblings from each of six litters, were distributed randomly among three groups after weaning. The 'Natural long-day' group was housed in a standard room with windows, whereas the 'Artificial long-day' and 'Artificial short-day' groups were housed in light-sealed rooms and under an arti...

journal_title：Domestic animal endocrinology

authors： Andersson H,Lillpers K,Rydhmer L,Forsberg M

更新日期：2000-11-01 00:00:00

abstract：:In German shepherd dogs pituitary dwarfism is known as an autosomal recessive inherited abnormality. To investigate whether the function of cells other than the somatotropes may also be impaired in this disease, the secretory capacity of the pituitary anterior lobe (AL) cells was studied by a combined pituitary AL sti...

journal_title：Domestic animal endocrinology

authors： Kooistra HS,Voorhout G,Mol JA,Rijnberk A

更新日期：2000-10-01 00:00:00

abstract：:Growth process of animals is regulated by a multitude of physiological pathways among which components of the somatotropic axis play a key role. A number of severe, simply inherited growth disturbances have been identified in humans, laboratory and farm animals. These disorders are controlled by defective alleles at m...

journal_title：Domestic animal endocrinology

authors： Sellier P

更新日期：2000-08-01 00:00:00

abstract：:This experiment evaluated relationships between pituitary messenger RNA levels of the transcription factor Pit-1, the growth hormone releasing-hormone receptor (GHRHR), and synthesis and secretion of GH in growing wethers. The experiment also evaluated the influence of the estrogenic compound, zeranol, on these relati...

journal_title：Domestic animal endocrinology

authors： Thomas MG,Carroll JA,Raymond SR,Matteri RL,Keisler DH

更新日期：2000-04-01 00:00:00

abstract：:The objective of this study was to characterize plasma insulin-like growth factor-I (IGF-I) profiles during the estrous cycle in goats. Frequent blood samples were drawn during the day of estrus and during the luteal phase on Day 10 after estrus, and plasma growth hormone (GH) and IGF-I profiles were examined. Then, d...

journal_title：Domestic animal endocrinology

authors： Hashizume T,Ohtsuki K,Matsumoto N

更新日期：2000-02-01 00:00:00

abstract：:Thyroid status is compromised in a variety of acute and chronic infections and toxin-mediated disease states. Conversion of thyroxine (T4) into the metabolically active hormone, triiodothyronine (T3), is catalyzed by 5'-deiodinase (5'D). Our objective was to determine the effect of endotoxin (LPS) challenge with and w...

journal_title：Domestic animal endocrinology

authors： Kahl S,Elsasser TH,Blum JW

更新日期：2000-01-01 00:00:00

abstract：:Reduction in fertility is well known to be possibly related to selenium deficiencies, even if target organ for selenium action is, at present, unclear. The present study was aimed to examine whether selenium directly influences granulosa cells. Bovine granulosa cells from different size follicles were used to investig...

journal_title：Domestic animal endocrinology

authors： Basini G,Tamanini C

更新日期：2000-01-01 00:00:00

abstract：:N-methyl-D, L-aspartate (NMA) elicited secretion of growth hormone (GH)-releasing hormone from both the hypothalamic-preoptic area and the median eminence that were collected from boars. We suggest that the previously described increase in GH secretion that follows peripheral treatment of swine with NMA is attributabl...

journal_title：Domestic animal endocrinology

authors： Estienne MJ,McElwain KV,Barrett JB,Barb CR

更新日期：1999-11-01 00:00:00

abstract：:The aim of the study and short review was to present evidence that growth hormone (GH), locally produced insulin-like growth factors (IGFs), and IGF-binding proteins (IGFBPs) may have an important role in the control of ovarian function. There is clear evidence for a distinct GH-receptor mRNA expression and protein pr...

journal_title：Domestic animal endocrinology

authors： Schams D,Berisha B,Kosmann M,Einspanier R,Amselgruber WM

更新日期：1999-10-01 00:00:00

abstract：:During the past 20 years, there have been many impressive advances in a number of scientific disciplines that have led to the discovery and development of exciting new biotechnologies that offer the potential to improve productive efficiency of animal agriculture. Some technologies have been developed from advances ma...

journal_title：Domestic animal endocrinology

authors： Etherton TD

更新日期：1999-10-01 00:00:00

abstract：:It has been established that sows up- or down-regulate their milk production as the frequency of nursings is changed. The amount of udder massage by piglets might also influence milk production. To investigate whether these effects are associated with changes in prolactin or insulin levels, we enforced five sows each ...

journal_title：Domestic animal endocrinology

authors： Spinka M,Illmann G,Stetková Z,Krejcí P,Tománek M,Sedlák L,Lidický J

更新日期：1999-07-01 00:00:00

abstract：:The objective of this experiment was to develop a procedure for immunizing ewes against melatonin that would alter the effects of changing photoperiod on seasonal reproduction and prolactin secretion. Ewes were immunized against human serum albumin (HSA) as controls (n = 9) or a melatonin-human serum albumin conjugate...

journal_title：Domestic animal endocrinology

authors： O'Callaghan D,Sweeney T,Taylor L,Roblot G,Wylde R

更新日期：1999-05-01 00:00:00

abstract：:A positive-feedback loop between luteal oxytocin and uterine prostaglandin F2 alpha (PGF) is a major signal for luteolysis in ruminants. Likewise, uterine PGF causes luteolysis in mares, but the involvement of oxytocin in this process is unclear. We wanted: 1) to determine if the oxytocin-neurophysin I (OT-NP I) gene ...

journal_title：Domestic animal endocrinology

authors： Behrendt-Adam CY,Adams MH,Simpson KS,McDowell KJ

更新日期：1999-04-01 00:00:00

abstract：:Age-dependent interactions between environmental temperature and porcine growth hormone (pGH) treatment on the function of the somatotrophic axis were evaluated in the neonatal pig. At 3 d of age, 40 Landrace x Yorkshire x Duroc piglets received intraperitoneal implants containing either recombinant pGH (0.5 mg/d; n =...

journal_title：Domestic animal endocrinology

authors： Carroll JA,Buonomo FC,Becker BA,Matteri RL

更新日期：1999-02-01 00:00:00

abstract：:This study was aimed at testing the hypothesis that insulin-like growth factor binding protein (IGFBP)-3 can modulate hormone-dependent differentiation of granulosa cells in vitro. Granulosa cells from small (1 to 5 mm) follicles were collected from cattle, cultured for 2 d in medium containing 10% fetal calf serum, w...

journal_title：Domestic animal endocrinology

authors： Spicer LJ,Chamberlain CS

更新日期：1999-01-01 00:00:00

abstract：:The objective of this study was to determine the effects of steroid hormone implantation in heifer calves on the ability of mammary tissue to develop subsequently in organ culture. Twenty-four calves were paired by date of birth and assigned to groups (eight calves/group). At 4, 7, or 10 mo of age, calves were implant...

journal_title：Domestic animal endocrinology

authors： Maple RL,Akers RM,Plaut K

更新日期：1998-11-01 00:00:00

abstract：:IL-2 has analgesic effects in both central and peripheral nervous systems. There are two distinct domains in IL-2 molecule mediating immunologic and analgesic activity, respectively. The analgesic domain of IL-2 may be composed of the 44th Phe, 45th Tyr, 107th Tyr, and 117th Phe residues that are located closely in th...

journal_title：Domestic animal endocrinology

authors： Jiang CL,Lu CL,Liu XY

更新日期：1998-09-01 00:00:00

abstract：:The development and function of the immune system is regulated by neuroendocrine factors. Immune function may be divided into adaptive and natural immunity. Adaptive immune responses are driven by specific determinants of the antigen (epitopes), require 5-10 d to fully develop, and show an accelerated or memory respon...

journal_title：Domestic animal endocrinology

authors： Berczi I,Chow DA,Sabbadini ER

更新日期：1998-09-01 00:00:00

abstract：:The effects of weaning and changing post-weaning diet composition on growth patterns and growth-related hormonal profiles were evaluated in neonatal pigs. Forty-eight crossbred piglets were assigned to two groups (n = 24/group) based on weaning at 2 or 3 wk of age (2W and 3W groups. respectively). At weaning, piglets ...

journal_title：Domestic animal endocrinology

authors： Carroll JA,Veum TL,Matteri RL

更新日期：1998-05-01 00:00:00

abstract：:It has been suggested that there is a shift in steroidogenic pathways of the theca layer from delta 5 to delta 4 during follicular maturation in the chicken ovary. However, the preferred steroid metabolic pathway in the theca and granulosa layers of small and preovulatory follicles has not been identified. Therefore, ...

journal_title：Domestic animal endocrinology

authors： Lee KA,Volentine KK,Bahr JM

更新日期：1998-01-01 00:00:00

abstract：:The physiological regulation of food intake is a critical factor in both the rate at which an animal grows and its reproductive activity. Recently, progress has been made in elucidating a complex system in which insulin, leptin, and neuropeptide Y function to monitor an animal's energy balance and regulate feed intake...

journal_title：Domestic animal endocrinology

authors： Dyer CJ,Simmons JM,Matteri RL,Keisler DH

更新日期：1997-09-01 00:00:00

abstract：:A large amount of research, primarily in mammals, has defined to a great extent the pleiotropic effects of the IGF system on growth, development, and intermediary metabolism. Similar elucidations in poultry were hindered to some extent by the absence of native peptides (IGF-I and IGF-II) until their purification, foll...

journal_title：Domestic animal endocrinology

authors： McMurtry JP,Francis GL,Upton Z

更新日期：1997-07-01 00:00:00

abstract：:Twelve pregnant Brahman cows were randomly assigned to one of two treatment groups: 1) transported in a stock trailer for 24.2 km, unloaded at a second farm and penned for 1 hr, and then returned to the original farm (TRANS, n = 6); or 2) walked through the handling facilities (SHAM, n = 6). Treatments were repeated a...

journal_title：Domestic animal endocrinology

authors： Lay DC Jr,Randel RD,Friend TH,Carroll JA,Welsh TH Jr,Jenkins OC,Neuendorff DA,Bushong DM,Kapp GM

更新日期：1997-03-01 00:00:00

abstract：:A remote infusion and blood collection device (Dracpac) was used on free-ranging red deer stags to deliver i.v. a range of ACTH1-24 doses and collect blood for cortisol determination. In Experiment 1, conducted in September, saline and 1, 4, and 16 IU ACTH/100 kg bodyweight were infused (n = 5-7 per treatment). In Exp...

journal_title：Domestic animal endocrinology

authors： Ingram JR,Matthews LR,Carragher JF,Schaare PR

更新日期：1997-01-01 00:00:00

abstract：:A selection project produced control cows from continuous matings with breed average bulls for predicted transmitting ability for milk (PTA-milk) in 1964 and select cows from matings to four of the highest PTA-milk bulls each year since 1964. Blood samples were collected in 1992 when milk yield difference of select an...

journal_title：Domestic animal endocrinology

authors： Lee BK,Lin GF,Crooker BA,Murtaugh MP,Hansen LB,Chester-Jones H

更新日期：1996-07-01 00:00:00

abstract：:A simple extraction and assay technique of estrone sulfate in bovine blood was developed with the object of detecting the peripheral level of estrone sulfate in a normal estrous cycle or in early pregnancy. Estrone sulfate in bovine plasma was extracted with a small reversed phase cartridge. The steroid conjugate reta...

journal_title：Domestic animal endocrinology

authors： Hirako M,Takahashi H,Domeki I

更新日期：1996-05-01 00:00:00

abstract：:Satellite cells are the postnatal myogenic cells, as they provide myonuclei to support skeletal muscle hypertrophy and are principal cells responsible for myofiber repair and regeneration. Even though research with satellite cells from meat animals is new, considerable data exist to suggest that these cells are regula...

journal_title：Domestic animal endocrinology

authors： Dodson MV,McFarland DC,Grant AL,Doumit ME,Velleman SG

更新日期：1996-03-01 00:00:00

abstract：:We have determined the binding affinity and capacity and relative distribution of epidermal growth factor (EGF) receptors in the skin of the Merino sheep fetus before and during the development of the wool follicle population. Autoradiography of tissue sections incubated with [125I]EGF revealed that label was confined...

journal_title：Domestic animal endocrinology

authors： Wynn PC,Brown G,Moore GP

更新日期：1995-07-01 00:00:00

abstract：:Experimentally induced fever is accompanied by a variety of hormonal changes, and there is evidence to suggest that some of these responses may be mediated by prostaglandins. However, little is known about the endocrine effects of peripherally administered prostaglandins, especially in domesticated species. In this st...

journal_title：Domestic animal endocrinology

authors： Parrott RF,Vellucci SV,Forsling ML,Goode JA

更新日期：1995-04-01 00:00:00

abstract：:Intact (n = 17) and unilaterally hysterectomized-ovariectomized (UHOX, n = 19) gilts were used to study conceptus development and the steroidogenic capability of three regions of the porcine placenta under normal and crowded intrauterine conditions. Gilts were hysterectomized on either Days 30, 50, 70, or 90 of gestat...

journal_title：Domestic animal endocrinology

authors： Tarraf CG,Knight JW

更新日期：1995-01-01 00:00:00

abstract：:We have previously reported that a peptide from chicken bursa of Fabricius, bursal antisteroidogenic peptide (BASP), inhibits luteinizing hormone-stimulated progesterone biosynthesis by chicken ovarian granulosa cells. The objective of this study was to determine the site(s) of BASP inhibition within the steroidogenic...

journal_title：Domestic animal endocrinology

authors： Dean CE,Byrd JA,Hargis BM

更新日期：1995-01-01 00:00:00

abstract：:The relationship between in vitro somatotroph function and growth was examined in piglets demonstrating a continuous range of growth characteristics. Twenty barrows were sacrificed at 3 weeks of age for the collection of pituitary tissue and blood. Pituitary cells from each animal were cultured and exposed to vehicle ...

journal_title：Domestic animal endocrinology

authors： Matteri RL,Lamberson WR,Keisler DH

更新日期：1994-10-01 00:00:00

abstract：:This study examined the role of the adrenergic system in the regulation of growth hormone (GH) secretion in sheep. Intravenous infusion of noradrenaline (0.5 microgram/kg per min for 2 hr) totally suppressed plasma GH concentrations. Concomitant treatment of animals with the beta-adrenergic antagonist propranolol comp...

journal_title：Domestic animal endocrinology

authors： Thomas GB,Scott CJ,Cummins JT,Clarke IJ

更新日期：1994-04-01 00:00:00

abstract：:The objective of the present studies was to determine the effect of cytokines on FSH-induced estrogen production by granulosa cells from small (1-5 mm) and large (> or = 8 mm) bovine follicles. FSH-induced estradiol production by granulosa cells from large follicles (expressed as pg estradiol/10(5) cells/24 hr) was no...

journal_title：Domestic animal endocrinology

authors： Spicer LJ,Alpizar E

更新日期：1994-01-01 00:00:00

abstract：:The influence of genetic selection for improved feed conversion (FC) and fast growth (GL) in broiler chickens, on the hepatic growth hormone receptor was investigated as a function of age. Selection for improved feed conversion resulted in lean chickens, whereas selection for fast growth resulted in fat chickens. Grow...

journal_title：Domestic animal endocrinology

authors： Vanderpooten A,Janssens W,Buyse J,Leenstra F,Berghman L,Decuypere E,Kühn ER

更新日期：1993-07-01 00:00:00

abstract：:Follicular hormones, growth and granulosa cell gonadotropin sensitive adenylate cyclase activity were determined in healthy and atretic follicles during preovulatory maturation in pigs. Ovaries were recovered at slaughter which was 1, 3, 5 or 7 d after the last administration of a progesterone agonist (altrenogest). P...

journal_title：Domestic animal endocrinology

authors： Guthrie HD,Bolt DJ,Cooper BS

更新日期：1993-04-01 00:00:00

abstract：:Crossbred ovariectomized ewes were treated with steroid therapies determined previously to be adequate (progesterone-primed) or inadequate (unprimed) for embryonic development in order to determine actual serum concentrations of replaced steroid hormones achieved by such treatments and to identify secreted endometrial...

journal_title：Domestic animal endocrinology

authors： Moffatt RJ,Bettencourt CM,Keisler DH

更新日期：1993-04-01 00:00:00

abstract：:Three experiments were performed to study effects of decreased concentrations of estradiol-17 beta (E2) on lifespan and function of ensuing ovine corpora lutea (CL). In experiment 1, 52 follicles were collected from 10 ewes and placed into individual culture with 0 or .01 microCi 3H-androstenedione (10 ng; 3H-A) and 0...

journal_title：Domestic animal endocrinology

authors： Benoit AM,Inskeep EK,Dailey RA

更新日期：1992-10-01 00:00:00