N-methyl-d,l-aspartate modulation of pituitary hormone secretion in the pig: Role of opioid peptides
Sixteen ovariectomized (OVX) mature gilts, averaging 139.6 ± 3.1 kg body weight (BW) were assigned randomly to receive either progesterone (P, 0.85 mg/kg BW, n=8) or corn oil vehicle (OIL, n=8) injections im twice daily for 10 d. On the day of experiment, all gilts received either the EAA agonist, N...
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| Veröffentlicht in: | Domestic animal endocrinology 1993-10, Vol.10 (4), p.305-313 |
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| creator | Chang, W.J. Barb, C.R. Kraeling, R.R. Rampacek, G.B. Asanovich, K.M. |
| description | Sixteen ovariectomized (OVX) mature gilts, averaging 139.6 ± 3.1 kg body weight (BW) were assigned randomly to receive either progesterone (P, 0.85 mg/kg BW, n=8) or corn oil vehicle (OIL, n=8) injections im twice daily for 10 d. On the day of experiment, all gilts received either the EAA agonist, N-methyl-d,l-aspartate (NMA; 10 mg/kg BW, iv) alone or NMA plus the EOP antagonist, naloxone (NAL, 1 mg/kg BW, iv), resulting in the following groups of 4 gilts each: OIL-NMA, OIL-NMA-NAL, P-NMA and P-NMA-NAL. Blood samples were collected via jugular cannula every 15 min for 6 hr. All pigs received NMA 5 min following pretreatment with either 0.9% saline or NAL 2 hr after blood collection began and a GnRH challenge 3 hr after NMA. Administration of NMA suppressed (P |
| doi_str_mv | 10.1016/0739-7240(93)90034-9 |
| format | Article |
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On the day of experiment, all gilts received either the EAA agonist, N-methyl-d,l-aspartate (NMA; 10 mg/kg BW, iv) alone or NMA plus the EOP antagonist, naloxone (NAL, 1 mg/kg BW, iv), resulting in the following groups of 4 gilts each: OIL-NMA, OIL-NMA-NAL, P-NMA and P-NMA-NAL. Blood samples were collected via jugular cannula every 15 min for 6 hr. All pigs received NMA 5 min following pretreatment with either 0.9% saline or NAL 2 hr after blood collection began and a GnRH challenge 3 hr after NMA. Administration of NMA suppressed (P<0.03) LH secretion in OIL-NMA gilts and treatment with NAL failed to reverse the suppressive effect of NMA on LH secretion in OIL-NMA-NAL gilts. Similar to OIL-NMA gilts, NMA decreased (P<0.03) mean serum LH concentrations in P-NMA gilts. However, in P-NMA-NAL gilts, serum LH concentrations were not changed following treatment. All gilts responded to GnRH with increased (P<0.01) LH secretion. Additionally, administration of NMA increased (P<0.01) growth hormone (GH) and prolactin (PRL) secretion in both OIL-NMA and P-NMA gilts, but this increase in GH and PRL secretion was attenuated (P<0.01) by pretreatment with NAL in OIL-NMA-NAL and P-NMA-NAL gilts. Serum cortisol concentrations increased (P<0.01) in all gilts and the magnitude of the cortisol response was not different among groups. In summary, results of the present study confirmed previous findings that NMA suppresses LH secretion in both oil- and P-treated OVX gilts, but we failed to provide definitive evidence that EOP are involved in the NMA-induced suppression of LH secretion. However, NMA may, in part, activate the EOP system which in turn increased GH and PRL secretion in the gilt.]]></description><identifier>ISSN: 0739-7240</identifier><identifier>EISSN: 1879-0054</identifier><identifier>DOI: 10.1016/0739-7240(93)90034-9</identifier><identifier>PMID: 8306634</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>ACIDE AMINE ; AMINO ACIDS ; AMINOACIDOS ; Analysis of Variance ; Animals ; ANTIMETABOLITE ; ANTIMETABOLITES ; ANTIMETABOLITOS ; BLOOD SAMPLING ; CERDAS ; Endorphins - physiology ; ESTEROIDES ; EXCITATORY AMINO ACIDS ; Female ; FEMALES ; FEMELLE ; GILTS ; GLANDULA PITUITARIA ; Growth Hormone - secretion ; HEMBRA ; HORMONAS ; HORMONE ; HORMONES ; HYDROCORTISONE ; Hydrocortisone - secretion ; HYPOPHYSE ; Luteinizing Hormone - secretion ; MUESTREO SANGUINEO ; N-Methylaspartate - pharmacology ; Naloxone - pharmacology ; OVARIECTOMIA ; OVARIECTOMIE ; OVARIECTOMY ; PEPTIDE ; PEPTIDES ; PEPTIDOS ; PITUITARY GLAND ; Pituitary Gland - drug effects ; Pituitary Gland - secretion ; Pituitary Hormones - secretion ; PRELEVEMENT SANGUIN ; PROGESTERONA ; PROGESTERONE ; Progesterone - pharmacology ; PROLACTIN ; Prolactin - secretion ; PROLACTINA ; PROLACTINE ; Radioimmunoassay ; Random Allocation ; SECRECION ; SECRETION ; SOMATOTROPIN ; SOMATOTROPINA ; SOMATOTROPINE ; SOWS ; STEROIDE ; STEROIDS ; Swine - metabolism ; Time Factors ; TRUIE</subject><ispartof>Domestic animal endocrinology, 1993-10, Vol.10 (4), p.305-313</ispartof><rights>1993</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c376t-1d423d18936f75ebe0d0439753993f0427b8416c4c9e9781f34e1343db1cade53</citedby><cites>FETCH-LOGICAL-c376t-1d423d18936f75ebe0d0439753993f0427b8416c4c9e9781f34e1343db1cade53</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/0739724093900349$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/8306634$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Chang, W.J.</creatorcontrib><creatorcontrib>Barb, C.R.</creatorcontrib><creatorcontrib>Kraeling, R.R.</creatorcontrib><creatorcontrib>Rampacek, G.B.</creatorcontrib><creatorcontrib>Asanovich, K.M.</creatorcontrib><title>N-methyl-d,l-aspartate modulation of pituitary hormone secretion in the pig: Role of opioid peptides</title><title>Domestic animal endocrinology</title><addtitle>Domest Anim Endocrinol</addtitle><description><![CDATA[Sixteen ovariectomized (OVX) mature gilts, averaging 139.6 ± 3.1 kg body weight (BW) were assigned randomly to receive either progesterone (P, 0.85 mg/kg BW, n=8) or corn oil vehicle (OIL, n=8) injections im twice daily for 10 d. On the day of experiment, all gilts received either the EAA agonist, N-methyl-d,l-aspartate (NMA; 10 mg/kg BW, iv) alone or NMA plus the EOP antagonist, naloxone (NAL, 1 mg/kg BW, iv), resulting in the following groups of 4 gilts each: OIL-NMA, OIL-NMA-NAL, P-NMA and P-NMA-NAL. Blood samples were collected via jugular cannula every 15 min for 6 hr. All pigs received NMA 5 min following pretreatment with either 0.9% saline or NAL 2 hr after blood collection began and a GnRH challenge 3 hr after NMA. Administration of NMA suppressed (P<0.03) LH secretion in OIL-NMA gilts and treatment with NAL failed to reverse the suppressive effect of NMA on LH secretion in OIL-NMA-NAL gilts. Similar to OIL-NMA gilts, NMA decreased (P<0.03) mean serum LH concentrations in P-NMA gilts. However, in P-NMA-NAL gilts, serum LH concentrations were not changed following treatment. All gilts responded to GnRH with increased (P<0.01) LH secretion. Additionally, administration of NMA increased (P<0.01) growth hormone (GH) and prolactin (PRL) secretion in both OIL-NMA and P-NMA gilts, but this increase in GH and PRL secretion was attenuated (P<0.01) by pretreatment with NAL in OIL-NMA-NAL and P-NMA-NAL gilts. Serum cortisol concentrations increased (P<0.01) in all gilts and the magnitude of the cortisol response was not different among groups. In summary, results of the present study confirmed previous findings that NMA suppresses LH secretion in both oil- and P-treated OVX gilts, but we failed to provide definitive evidence that EOP are involved in the NMA-induced suppression of LH secretion. However, NMA may, in part, activate the EOP system which in turn increased GH and PRL secretion in the gilt.]]></description><subject>ACIDE AMINE</subject><subject>AMINO ACIDS</subject><subject>AMINOACIDOS</subject><subject>Analysis of Variance</subject><subject>Animals</subject><subject>ANTIMETABOLITE</subject><subject>ANTIMETABOLITES</subject><subject>ANTIMETABOLITOS</subject><subject>BLOOD SAMPLING</subject><subject>CERDAS</subject><subject>Endorphins - physiology</subject><subject>ESTEROIDES</subject><subject>EXCITATORY AMINO ACIDS</subject><subject>Female</subject><subject>FEMALES</subject><subject>FEMELLE</subject><subject>GILTS</subject><subject>GLANDULA PITUITARIA</subject><subject>Growth Hormone - secretion</subject><subject>HEMBRA</subject><subject>HORMONAS</subject><subject>HORMONE</subject><subject>HORMONES</subject><subject>HYDROCORTISONE</subject><subject>Hydrocortisone - secretion</subject><subject>HYPOPHYSE</subject><subject>Luteinizing Hormone - secretion</subject><subject>MUESTREO SANGUINEO</subject><subject>N-Methylaspartate - pharmacology</subject><subject>Naloxone - pharmacology</subject><subject>OVARIECTOMIA</subject><subject>OVARIECTOMIE</subject><subject>OVARIECTOMY</subject><subject>PEPTIDE</subject><subject>PEPTIDES</subject><subject>PEPTIDOS</subject><subject>PITUITARY GLAND</subject><subject>Pituitary Gland - drug effects</subject><subject>Pituitary Gland - secretion</subject><subject>Pituitary Hormones - secretion</subject><subject>PRELEVEMENT SANGUIN</subject><subject>PROGESTERONA</subject><subject>PROGESTERONE</subject><subject>Progesterone - pharmacology</subject><subject>PROLACTIN</subject><subject>Prolactin - secretion</subject><subject>PROLACTINA</subject><subject>PROLACTINE</subject><subject>Radioimmunoassay</subject><subject>Random Allocation</subject><subject>SECRECION</subject><subject>SECRETION</subject><subject>SOMATOTROPIN</subject><subject>SOMATOTROPINA</subject><subject>SOMATOTROPINE</subject><subject>SOWS</subject><subject>STEROIDE</subject><subject>STEROIDS</subject><subject>Swine - metabolism</subject><subject>Time Factors</subject><subject>TRUIE</subject><issn>0739-7240</issn><issn>1879-0054</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1993</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp9kNFKHDEUQINU7Lr1B0oL81QUmprMzSaTPhREtC1IC7Y-h2xyx02ZmUyTjODfO-suPvqUwDn3hhxCPnD2hTMuz5kCTVUt2KmGM80YCKoPyII3SlPGVuINWbwob8lxzv8YY2oePSJHDTApQSyI_0V7LJvHjvrPHbV5tKnYglUf_dTZEuJQxbYaQ5lCsemx2sTUxwGrjC7hMw5DVTY4K_dfq9vY4daPY4jBVyOOJXjM78hha7uMJ_tzSe6ur_5e_qA3v7__vLy4oQ6ULJR7UYPnjQbZqhWukXkmQKsVaA0tE7VaN4JLJ5xGrRregkAOAvyaO-txBUvyabd3TPH_hLmYPmSHXWcHjFM2StYcoFGzKHaiSzHnhK0ZU-jn_xnOzDau2ZYz23JGg3mOO1-W5ON-_7Tu0b8M7WvO_P2OtzYae59CNnd_tKgbKdkMv-0gzgUeAiaTXcDBoQ8JXTE-htdffwKKKpDa</recordid><startdate>19931001</startdate><enddate>19931001</enddate><creator>Chang, W.J.</creator><creator>Barb, C.R.</creator><creator>Kraeling, R.R.</creator><creator>Rampacek, G.B.</creator><creator>Asanovich, K.M.</creator><general>Elsevier Inc</general><scope>FBQ</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19931001</creationdate><title>N-methyl-d,l-aspartate modulation of pituitary hormone secretion in the pig: Role of opioid peptides</title><author>Chang, W.J. ; Barb, C.R. ; Kraeling, R.R. ; Rampacek, G.B. ; Asanovich, K.M.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c376t-1d423d18936f75ebe0d0439753993f0427b8416c4c9e9781f34e1343db1cade53</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1993</creationdate><topic>ACIDE AMINE</topic><topic>AMINO ACIDS</topic><topic>AMINOACIDOS</topic><topic>Analysis of Variance</topic><topic>Animals</topic><topic>ANTIMETABOLITE</topic><topic>ANTIMETABOLITES</topic><topic>ANTIMETABOLITOS</topic><topic>BLOOD SAMPLING</topic><topic>CERDAS</topic><topic>Endorphins - physiology</topic><topic>ESTEROIDES</topic><topic>EXCITATORY AMINO ACIDS</topic><topic>Female</topic><topic>FEMALES</topic><topic>FEMELLE</topic><topic>GILTS</topic><topic>GLANDULA PITUITARIA</topic><topic>Growth Hormone - secretion</topic><topic>HEMBRA</topic><topic>HORMONAS</topic><topic>HORMONE</topic><topic>HORMONES</topic><topic>HYDROCORTISONE</topic><topic>Hydrocortisone - secretion</topic><topic>HYPOPHYSE</topic><topic>Luteinizing Hormone - secretion</topic><topic>MUESTREO SANGUINEO</topic><topic>N-Methylaspartate - pharmacology</topic><topic>Naloxone - pharmacology</topic><topic>OVARIECTOMIA</topic><topic>OVARIECTOMIE</topic><topic>OVARIECTOMY</topic><topic>PEPTIDE</topic><topic>PEPTIDES</topic><topic>PEPTIDOS</topic><topic>PITUITARY GLAND</topic><topic>Pituitary Gland - drug effects</topic><topic>Pituitary Gland - secretion</topic><topic>Pituitary Hormones - secretion</topic><topic>PRELEVEMENT SANGUIN</topic><topic>PROGESTERONA</topic><topic>PROGESTERONE</topic><topic>Progesterone - pharmacology</topic><topic>PROLACTIN</topic><topic>Prolactin - secretion</topic><topic>PROLACTINA</topic><topic>PROLACTINE</topic><topic>Radioimmunoassay</topic><topic>Random Allocation</topic><topic>SECRECION</topic><topic>SECRETION</topic><topic>SOMATOTROPIN</topic><topic>SOMATOTROPINA</topic><topic>SOMATOTROPINE</topic><topic>SOWS</topic><topic>STEROIDE</topic><topic>STEROIDS</topic><topic>Swine - metabolism</topic><topic>Time Factors</topic><topic>TRUIE</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chang, W.J.</creatorcontrib><creatorcontrib>Barb, C.R.</creatorcontrib><creatorcontrib>Kraeling, R.R.</creatorcontrib><creatorcontrib>Rampacek, G.B.</creatorcontrib><creatorcontrib>Asanovich, K.M.</creatorcontrib><collection>AGRIS</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Domestic animal endocrinology</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chang, W.J.</au><au>Barb, C.R.</au><au>Kraeling, R.R.</au><au>Rampacek, G.B.</au><au>Asanovich, K.M.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>N-methyl-d,l-aspartate modulation of pituitary hormone secretion in the pig: Role of opioid peptides</atitle><jtitle>Domestic animal endocrinology</jtitle><addtitle>Domest Anim Endocrinol</addtitle><date>1993-10-01</date><risdate>1993</risdate><volume>10</volume><issue>4</issue><spage>305</spage><epage>313</epage><pages>305-313</pages><issn>0739-7240</issn><eissn>1879-0054</eissn><abstract><![CDATA[Sixteen ovariectomized (OVX) mature gilts, averaging 139.6 ± 3.1 kg body weight (BW) were assigned randomly to receive either progesterone (P, 0.85 mg/kg BW, n=8) or corn oil vehicle (OIL, n=8) injections im twice daily for 10 d. On the day of experiment, all gilts received either the EAA agonist, N-methyl-d,l-aspartate (NMA; 10 mg/kg BW, iv) alone or NMA plus the EOP antagonist, naloxone (NAL, 1 mg/kg BW, iv), resulting in the following groups of 4 gilts each: OIL-NMA, OIL-NMA-NAL, P-NMA and P-NMA-NAL. Blood samples were collected via jugular cannula every 15 min for 6 hr. All pigs received NMA 5 min following pretreatment with either 0.9% saline or NAL 2 hr after blood collection began and a GnRH challenge 3 hr after NMA. Administration of NMA suppressed (P<0.03) LH secretion in OIL-NMA gilts and treatment with NAL failed to reverse the suppressive effect of NMA on LH secretion in OIL-NMA-NAL gilts. Similar to OIL-NMA gilts, NMA decreased (P<0.03) mean serum LH concentrations in P-NMA gilts. However, in P-NMA-NAL gilts, serum LH concentrations were not changed following treatment. All gilts responded to GnRH with increased (P<0.01) LH secretion. Additionally, administration of NMA increased (P<0.01) growth hormone (GH) and prolactin (PRL) secretion in both OIL-NMA and P-NMA gilts, but this increase in GH and PRL secretion was attenuated (P<0.01) by pretreatment with NAL in OIL-NMA-NAL and P-NMA-NAL gilts. Serum cortisol concentrations increased (P<0.01) in all gilts and the magnitude of the cortisol response was not different among groups. In summary, results of the present study confirmed previous findings that NMA suppresses LH secretion in both oil- and P-treated OVX gilts, but we failed to provide definitive evidence that EOP are involved in the NMA-induced suppression of LH secretion. However, NMA may, in part, activate the EOP system which in turn increased GH and PRL secretion in the gilt.]]></abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>8306634</pmid><doi>10.1016/0739-7240(93)90034-9</doi><tpages>9</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0739-7240 |
| ispartof | Domestic animal endocrinology, 1993-10, Vol.10 (4), p.305-313 |
| issn | 0739-7240 1879-0054 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | ACIDE AMINE AMINO ACIDS AMINOACIDOS Analysis of Variance Animals ANTIMETABOLITE ANTIMETABOLITES ANTIMETABOLITOS BLOOD SAMPLING CERDAS Endorphins - physiology ESTEROIDES EXCITATORY AMINO ACIDS Female FEMALES FEMELLE GILTS GLANDULA PITUITARIA Growth Hormone - secretion HEMBRA HORMONAS HORMONE HORMONES HYDROCORTISONE Hydrocortisone - secretion HYPOPHYSE Luteinizing Hormone - secretion MUESTREO SANGUINEO N-Methylaspartate - pharmacology Naloxone - pharmacology OVARIECTOMIA OVARIECTOMIE OVARIECTOMY PEPTIDE PEPTIDES PEPTIDOS PITUITARY GLAND Pituitary Gland - drug effects Pituitary Gland - secretion Pituitary Hormones - secretion PRELEVEMENT SANGUIN PROGESTERONA PROGESTERONE Progesterone - pharmacology PROLACTIN Prolactin - secretion PROLACTINA PROLACTINE Radioimmunoassay Random Allocation SECRECION SECRETION SOMATOTROPIN SOMATOTROPINA SOMATOTROPINE SOWS STEROIDE STEROIDS Swine - metabolism Time Factors TRUIE |
| title | N-methyl-d,l-aspartate modulation of pituitary hormone secretion in the pig: Role of opioid peptides |
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