Wyniki wyszukiwania

1

Immunohistochemical demonstration of LH/CG receptors in non-neoplastic human adrenal cortex and adrenocortical tumors

100%

Korol P., Jaranowska M., Pawlikowski M.

Folia Histochemica et Cytobiologica

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2019

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tom 57

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nr 1

2

LH release in response to GnRH in cows with puerperal endometritis

100%

Janowski T., Chmielewski A., Jaroszewski J., Zdunczyk S.

Polish Journal of Veterinary Sciences

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1998

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tom 01

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nr 1

Ten cows with and 5 cows without puerperal endometritis were treated with 20 μg GnRH analogue, buserelin, intramuscularly. Blood samples were taken every 20 min for 8h before and for 8h after injection of GnRH. All cows responded to GnRH with significant increase of LH 20 min after treatment. The LH peak was significantly lower in cows with puerperal endometritis than that in clinically normal cows (27.91 ± 5.47 ng/ml vs 80.60 ± 17.2 ng/ml; p ≤ 0.01). The total AUC of LH was also significantly smaller in cows with puerperal endometritis compared to cows without it (p ≤ 0,01). The results suggest that the delayed resumption of ovarian function in cows with uterine infection may be caused by reduced responsiveness of the pituitary to endogenous GnRH. Further studies are needed in order to investigate the mechanism of this phenomenon.

3

Secretion patterns of luteinizing hormone in growing mithuns (Bos frontalis)

86%

Mondal M., Rajkhowa C., Prakash B. S.

Reproductive Biology

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2005

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tom 05

|

nr 2

4

Ontogeny of luteinizing hormone releasing hormone (LHRH) and somatostatin (SRIF) in the hypothalamus of the sheep

86%

Polkowska J.

Folia Histochemica et Cytobiologica

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1986

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tom 24

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nr 3

5

Isolation of human lutropin from woman urine and comparison of its properties with pituitary hormone

86%

Kurowska E., Szewczuk A.

Archivum Immunologiae et Therapiae Experimentalis

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1999

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tom 47

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nr 3

6

Gonadotropins and Alzheimer's disease: the link between estrogen replacement therapy and neuroprotection

86%

Webber K. M., Bowen R., Casadesus G., Perry G., Atwood C. S., Smith M. A.

Acta Neurobiologiae Experimentalis

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2004

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tom 64

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nr 1

7

Effects of growth hormone on neuroendocrine function

86%

Bartke A., Chandrashekar V., Steger R. W.

Acta Neurobiologiae Experimentalis

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1996

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tom 56

|

nr 3

8

Maternal behaviour and neuroendocrine regulation of suckling-mediated anovulation in cows

86%

Williams G. L., Griffith M. K.

Journal of Physiology and Pharmacology. Supplement

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1992

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tom 43

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nr 1

9

The involvement of catecholamines in the pituitary release of luteinizing hormone [LH] and prolactin [PRL] in progesterone [P4] - treated gilts

86%

Siawrys G., Przala J.

Folia Histochemica et Cytobiologica. Supplement

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1997

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tom 35

|

nr 2

10

Induced spawning of the striped murrel Channa striatus using pituitary extracts, human chorionic gonadotropin, luteinizing hormone releasing hormone analogue, and ovaprim

86%

Haniffa M. A., Merlin T., Shaik Mohamed J.

Acta Ichthyologica et Piscatoria

|

2000

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tom 30

|

nr 1

Striated murrel Channa striatus were injected with natural hormones (pituitary extract and human chorionic gonadotropin) and synthetic hormones (luteinizing hormone releasing hormone analogue and ovaprim). When compared to the LHRHap and ovaprim, the latency period was long in pituitary- (24 h) and HCG-injected (26 h) fish. In the pituitary-injected C. striatus the percentage of fertilisation was the lowest (60-68%) but the duration of hatching was longest (39-43 h) followed by HCG- (36-38 h), LHRHap- (34-36 h) and ovaprim-injected (21-23 h) individuals. In terms of fertilisation (95-98%) and hatching, ovaprim yielded better results. Ova reached the highest diameter (1.34-1.45 mm) in C. striatus injected with ovaprim, followed by HCG (1.22-1.30 mm) and pituitary (1.21-1.27 mm). The lowest ova diameter (1.07-1.09 mm) was observed in C. striatus injected with LHRHap.

11

Influence of oestradiol and progesterone on the expression of LH-hCG receptors in the porcine broad ligament

86%

Wasowicz G., Ziecik A. J.

Polish Journal of Veterinary Sciences

|

2000

|

tom 03

|

nr 2

This study investigated an influence of oestradiol and progesterone on expression of LH/hCG receptors in the porcine uterine broad ligament. The tissues were obtained from nineteen ovariectomized crossbred gilts. The animals received i.m. injections of 2 ml of corn oil (control; n=4), 25 μg kg-1 of oestradiol benzoate (n=5), 500 μg kg-1 of progesterone (n=5) or 25 μg kg-1 of oestradiol benzoate with 500 μg kg-1 of progesterone (n=5) daily for 5 consecutive days before slaughter. It was found that oestradiol increased the number of receptors in arteries of all areas in the uterine broad ligament, in veins located near the uterine horn and in the ovarian vein as well as in the ligament musculature in the area of vessels located near uterine horn. Progesterone decreased the expression of receptors in all tissues from the area of vessels located about 4 cm below the uterine horn, but augmented their expression in the ovarian vein and in muscular layers of the broad ligament in the area of the uterine vessels trunk. Oestradiol with progesterone increased amount of receptors in arteries from the area of uterine vessels branches, in ovarian vessels^ in veins from areas of branches and trunk of uterine vessels as well as in muscular layers of the broad ligament collected from areas of uterine vessels trunk and paraovarian plexus. These results indicate that oestradiol and progesterone are responsible for changes in expression and distribution of LH/hCG receptors in the broad ligament of the porcine uterus.

12

Daily GnRH and LH secretion in ewes is not modified by exogenous melatonin during seasonal anestrus

86%

Romanowicz K., Misztal T., Gajewska A., Barcikowski B.

Acta Neurobiologiae Experimentalis

|

2001

|

tom 61

|

nr 4

13

Effects of transferrin on aromatase activity in porcine granulosa cells in vitro

72%

Durlej M., Duda M., Knapczyk K., Slomczynska M.

Folia Histochemica et Cytobiologica

|

2008

|

tom 46

|

nr 4

423-428

14

Expression of peroxisome proliferator-activated receptors is regulated by gonadotropins and steroid hormones in in vitro porcine ovarian follicles

72%

Kurowska P., Chmielinska J., Ptak A., Rak A.

Journal of Physiology and Pharmacology

|

2017

|

tom 68

|

nr 6

15

Modulation of anterior pituitary cell luteinizing hormone secretory activity by neuropeptide Y in early pregnant pigs

72%

Siawrys G., Buchowski H.

Journal of Physiology and Pharmacology

|

2018

|

tom 69

|

nr 5

16

Ontogeny of neuropeptidergic systems: luteinizing hormone releasing hormone (LHRH); somatostatin (SRIF) and neurophysin (NF) in the hypothalamus of the domestic pig by immunocytochemistry

72%

Polkowska J., Liwska J., Dubois M. P.

Folia Histochemica et Cytobiologica

|

1985

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tom 23

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nr 4

17

The expression of genes coding for opioid precursors, opioids receptors, beta-LH subunit and GnRH receptor in the anterior pituitary of cyclic gilts

72%

Wylot B., Staszkiewicz J., Okrasa S.

Journal of Physiology and Pharmacology

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2008

|

tom 59

|

nr 4

745-758

In previous studies the effect of endogenous opioid peptides (EOP) on LH secretion was mainly considered at the hypothalamic level, while opioid involvement in the modulation of LH secretion at the pituitary level remains insufficiently elucidated. Therefore, the present study was undertaken to determine the expression of genes encoding opioid precursors – proopiomelanocortin (POMC), proenkephalin (PENK), prodynorphin (PDYN) and opioid receptors – mu, delta, kappa in the porcine anterior pituitary throughout the estrous cycle. Additionally, the mRNA content of ß-LH subunit and GnRH receptor (GnRH-R) was estimated. Pituitaries (5×N = 7) were collected from sows on days 3-5, 8-10, 13-15, 16-17 and 19-20 of the cycle and gene expression was determined using a semi-quantitative RT-PCR assay. The expression of POMC, PDYN, delta and kappa receptor genes was variable across the cycle, whereas the expression of PENK and mu receptor genes remained relatively stable. The POMC mRNA content was the lowest on days 19-20 of the cycle and the PDYN content was reduced on days 8-10. The delta receptor mRNA content was elevated on days 3-5, while the kappa receptor mRNA content was decreasing over the luteal phase. Changes in the expression of genes encoding ß-LH and GnRH-R were also demonstrated. These results indicate variable activity of pituitary opioid systems in cyclic pigs and suggest implication of EOP in the modulation of LH secretion at the pituitary level.

18

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Effects of corticotropin releasing hormone and corticotropin releasing hormone antagonist on biosynthesis of gonadotropin releasing hormone and gonadotropin releasing hormone receptor in the hypothalamic-pituitary unit of follicular-phase ewes and contribution of kisspeptin

72%

Ciechanowska M., Kowalczyk M., Lapot M., Malewski T., Antkowiak B., Brytan M., Winnicka I., Przekop F.

Journal of Physiology and Pharmacology

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2018

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tom 69

|

nr 3

19

Progesterone and androgen secretion by isolated cultured bovine corpus luteum cells: effect of LH, hCG, PRL, estradiol 17beta and testosterone

72%

Gregoraszczuk E.

Folia Histochemica et Cytobiologica

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1985

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tom 23

|

nr 1-2

20

Effect of naloxone treatment on luteinizing hormone and testosterone concentrations in boars with high and low libido

72%

Estienne M. J., Harper A. F., Speight S. M., Crawford R. J., Barb C. R.

Reproductive Biology

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2009

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tom 09

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nr 3

Ograniczanie wyników

Immunohistochemical demonstration of LH/CG receptors in non-neoplastic human adrenal cortex and adrenocortical tumors

LH release in response to GnRH in cows with puerperal endometritis

Secretion patterns of luteinizing hormone in growing mithuns (Bos frontalis)

Ontogeny of luteinizing hormone releasing hormone (LHRH) and somatostatin (SRIF) in the hypothalamus of the sheep