Spinal pathway of the milk-ejection reflex in the rat
The effects of lesions of the spinal cord on the milk-ejection reflex evoked by suckling were studied in urethane-anesthetized lactating rats. All lesions were made between C6 and C7 vertebrae and milk ejection was monitored by recording intramammary pressure. In the first experiment on the rats wit...
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| Veröffentlicht in: | Biology of reproduction 1984-02, Vol.30 (1), p.74-81 |
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| creator | FUKUOKA, T NEGORO, H HONDA, K HIGUCHI, T NISHIDA, E |
| description | The effects of lesions of the spinal cord on the milk-ejection reflex evoked by suckling were studied in urethane-anesthetized
lactating rats. All lesions were made between C6 and C7 vertebrae and milk ejection was monitored by recording intramammary
pressure. In the first experiment on the rats with bilateral lesions, a 3-h suckling test with 5 pups on each side was performed.
Eleven (84.6%) of 13 rats with the section of the dorsal funiculus (Group 2), and 12 (85.7%) of 14 rats with the combined
section of the dorsal and ventral funiculi (Group 4) displayed regular milk ejection. The incidence of milk ejection in both
groups was not significantly different from 81.8% (9 rats) of the 11 sham-operated rats (Group 1). In contrast, none of the
12 rats with bilateral section of the lateral funiculus (Group 3) displayed milk ejection and the incidence of milk ejection
was significantly lower than that in Group 1. In the second experiment on the rats with unilateral section of the lateral
funiculus, bilateral suckling with 10 pups (5 pups on each side) and unilateral suckling (both ipsilateral and contralateral
to the lesion) with 5 pups were consecutively performed in the 10 rats. Milk ejection was induced in 50% by contralateral
suckling and in 100% by bilateral suckling, and the incidence was significantly higher than that (0%) observed during ipsilateral
suckling. A significant difference in the incidence of milk ejection was also observed between contralateral and bilateral
sucklings. |
| doi_str_mv | 10.1095/biolreprod30.1.74 |
| format | Article |
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lactating rats. All lesions were made between C6 and C7 vertebrae and milk ejection was monitored by recording intramammary
pressure. In the first experiment on the rats with bilateral lesions, a 3-h suckling test with 5 pups on each side was performed.
Eleven (84.6%) of 13 rats with the section of the dorsal funiculus (Group 2), and 12 (85.7%) of 14 rats with the combined
section of the dorsal and ventral funiculi (Group 4) displayed regular milk ejection. The incidence of milk ejection in both
groups was not significantly different from 81.8% (9 rats) of the 11 sham-operated rats (Group 1). In contrast, none of the
12 rats with bilateral section of the lateral funiculus (Group 3) displayed milk ejection and the incidence of milk ejection
was significantly lower than that in Group 1. In the second experiment on the rats with unilateral section of the lateral
funiculus, bilateral suckling with 10 pups (5 pups on each side) and unilateral suckling (both ipsilateral and contralateral
to the lesion) with 5 pups were consecutively performed in the 10 rats. Milk ejection was induced in 50% by contralateral
suckling and in 100% by bilateral suckling, and the incidence was significantly higher than that (0%) observed during ipsilateral
suckling. A significant difference in the incidence of milk ejection was also observed between contralateral and bilateral
sucklings.</description><identifier>ISSN: 0006-3363</identifier><identifier>EISSN: 1529-7268</identifier><identifier>DOI: 10.1095/biolreprod30.1.74</identifier><identifier>PMID: 6696966</identifier><identifier>CODEN: BIREBV</identifier><language>eng</language><publisher>Madison, WI: Society for the Study of Reproduction</publisher><subject>Afferent Pathways - anatomy & histology ; Animals ; Biological and medical sciences ; Female ; Fundamental and applied biological sciences. Psychology ; Lactation ; Mammary Glands, Animal - physiology ; Milk Ejection ; Mother. Fetoplacental unit. Mammary gland. Milk ; Pregnancy ; Pregnancy. Parturition. Lactation ; Pressure ; Rats ; Rats, Inbred Strains ; Reflex - physiology ; Spinal Cord - physiology ; Vertebrates: reproduction</subject><ispartof>Biology of reproduction, 1984-02, Vol.30 (1), p.74-81</ispartof><rights>1985 INIST-CNRS</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c463t-c0dc735954ea8735909448e10e2fe40eee7d58262625c4a8e8606d59e215be023</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>314,780,784,27924,27925</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=9025987$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/6696966$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>FUKUOKA, T</creatorcontrib><creatorcontrib>NEGORO, H</creatorcontrib><creatorcontrib>HONDA, K</creatorcontrib><creatorcontrib>HIGUCHI, T</creatorcontrib><creatorcontrib>NISHIDA, E</creatorcontrib><title>Spinal pathway of the milk-ejection reflex in the rat</title><title>Biology of reproduction</title><addtitle>Biol Reprod</addtitle><description>The effects of lesions of the spinal cord on the milk-ejection reflex evoked by suckling were studied in urethane-anesthetized
lactating rats. All lesions were made between C6 and C7 vertebrae and milk ejection was monitored by recording intramammary
pressure. In the first experiment on the rats with bilateral lesions, a 3-h suckling test with 5 pups on each side was performed.
Eleven (84.6%) of 13 rats with the section of the dorsal funiculus (Group 2), and 12 (85.7%) of 14 rats with the combined
section of the dorsal and ventral funiculi (Group 4) displayed regular milk ejection. The incidence of milk ejection in both
groups was not significantly different from 81.8% (9 rats) of the 11 sham-operated rats (Group 1). In contrast, none of the
12 rats with bilateral section of the lateral funiculus (Group 3) displayed milk ejection and the incidence of milk ejection
was significantly lower than that in Group 1. In the second experiment on the rats with unilateral section of the lateral
funiculus, bilateral suckling with 10 pups (5 pups on each side) and unilateral suckling (both ipsilateral and contralateral
to the lesion) with 5 pups were consecutively performed in the 10 rats. Milk ejection was induced in 50% by contralateral
suckling and in 100% by bilateral suckling, and the incidence was significantly higher than that (0%) observed during ipsilateral
suckling. A significant difference in the incidence of milk ejection was also observed between contralateral and bilateral
sucklings.</description><subject>Afferent Pathways - anatomy & histology</subject><subject>Animals</subject><subject>Biological and medical sciences</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Lactation</subject><subject>Mammary Glands, Animal - physiology</subject><subject>Milk Ejection</subject><subject>Mother. Fetoplacental unit. Mammary gland. Milk</subject><subject>Pregnancy</subject><subject>Pregnancy. Parturition. Lactation</subject><subject>Pressure</subject><subject>Rats</subject><subject>Rats, Inbred Strains</subject><subject>Reflex - physiology</subject><subject>Spinal Cord - physiology</subject><subject>Vertebrates: reproduction</subject><issn>0006-3363</issn><issn>1529-7268</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1984</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpNUE1PwzAMjRBojMEP4IDUA-LWke-2RzTxJU3iAJyjLHVZRtqOpFPZvydjZUI-2PJ7frYfQpcETwkuxO3Cts7D2rcli51pxo_QmAhapBmV-TEaY4xlyphkp-gshBXGhDPKRmgkZRFDjpF4XdtGu2Stu2Wvt0lbJd0Sktq6zxRWYDrbNomHysF3YptfzOvuHJ1U2gW4GPIEvT_cv82e0vnL4_Psbp4aLlmXGlyajIlCcND5rsAF5zkQDLQCjgEgK0VOZQxhuM4hl1iWogBKxAIwZRN0s9eNL35tIHSqtsGAc7qBdhNUHk1gVPJIJHui8W0I8V619rbWfqsIVjur1H-rFFHZbuZqEN8saigPE4M3Eb8ecB2MdpXXjbHhQCswFUX86kBb2o9lbz2oUGvnoihTfd__bfsBrRN_XA</recordid><startdate>198402</startdate><enddate>198402</enddate><creator>FUKUOKA, T</creator><creator>NEGORO, H</creator><creator>HONDA, K</creator><creator>HIGUCHI, T</creator><creator>NISHIDA, E</creator><general>Society for the Study of Reproduction</general><scope>IQODW</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>198402</creationdate><title>Spinal pathway of the milk-ejection reflex in the rat</title><author>FUKUOKA, T ; NEGORO, H ; HONDA, K ; HIGUCHI, T ; NISHIDA, E</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c463t-c0dc735954ea8735909448e10e2fe40eee7d58262625c4a8e8606d59e215be023</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1984</creationdate><topic>Afferent Pathways - anatomy & histology</topic><topic>Animals</topic><topic>Biological and medical sciences</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Lactation</topic><topic>Mammary Glands, Animal - physiology</topic><topic>Milk Ejection</topic><topic>Mother. Fetoplacental unit. Mammary gland. Milk</topic><topic>Pregnancy</topic><topic>Pregnancy. Parturition. Lactation</topic><topic>Pressure</topic><topic>Rats</topic><topic>Rats, Inbred Strains</topic><topic>Reflex - physiology</topic><topic>Spinal Cord - physiology</topic><topic>Vertebrates: reproduction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>FUKUOKA, T</creatorcontrib><creatorcontrib>NEGORO, H</creatorcontrib><creatorcontrib>HONDA, K</creatorcontrib><creatorcontrib>HIGUCHI, T</creatorcontrib><creatorcontrib>NISHIDA, E</creatorcontrib><collection>Pascal-Francis</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>Biology of reproduction</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>FUKUOKA, T</au><au>NEGORO, H</au><au>HONDA, K</au><au>HIGUCHI, T</au><au>NISHIDA, E</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Spinal pathway of the milk-ejection reflex in the rat</atitle><jtitle>Biology of reproduction</jtitle><addtitle>Biol Reprod</addtitle><date>1984-02</date><risdate>1984</risdate><volume>30</volume><issue>1</issue><spage>74</spage><epage>81</epage><pages>74-81</pages><issn>0006-3363</issn><eissn>1529-7268</eissn><coden>BIREBV</coden><abstract>The effects of lesions of the spinal cord on the milk-ejection reflex evoked by suckling were studied in urethane-anesthetized
lactating rats. All lesions were made between C6 and C7 vertebrae and milk ejection was monitored by recording intramammary
pressure. In the first experiment on the rats with bilateral lesions, a 3-h suckling test with 5 pups on each side was performed.
Eleven (84.6%) of 13 rats with the section of the dorsal funiculus (Group 2), and 12 (85.7%) of 14 rats with the combined
section of the dorsal and ventral funiculi (Group 4) displayed regular milk ejection. The incidence of milk ejection in both
groups was not significantly different from 81.8% (9 rats) of the 11 sham-operated rats (Group 1). In contrast, none of the
12 rats with bilateral section of the lateral funiculus (Group 3) displayed milk ejection and the incidence of milk ejection
was significantly lower than that in Group 1. In the second experiment on the rats with unilateral section of the lateral
funiculus, bilateral suckling with 10 pups (5 pups on each side) and unilateral suckling (both ipsilateral and contralateral
to the lesion) with 5 pups were consecutively performed in the 10 rats. Milk ejection was induced in 50% by contralateral
suckling and in 100% by bilateral suckling, and the incidence was significantly higher than that (0%) observed during ipsilateral
suckling. A significant difference in the incidence of milk ejection was also observed between contralateral and bilateral
sucklings.</abstract><cop>Madison, WI</cop><pub>Society for the Study of Reproduction</pub><pmid>6696966</pmid><doi>10.1095/biolreprod30.1.74</doi><tpages>8</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Biology of reproduction, 1984-02, Vol.30 (1), p.74-81 |
| issn | 0006-3363 1529-7268 |
| language | eng |
| recordid | cdi_proquest_miscellaneous_80953264 |
| source | MEDLINE; EZB-FREE-00999 freely available EZB journals |
| subjects | Afferent Pathways - anatomy & histology Animals Biological and medical sciences Female Fundamental and applied biological sciences. Psychology Lactation Mammary Glands, Animal - physiology Milk Ejection Mother. Fetoplacental unit. Mammary gland. Milk Pregnancy Pregnancy. Parturition. Lactation Pressure Rats Rats, Inbred Strains Reflex - physiology Spinal Cord - physiology Vertebrates: reproduction |
| title | Spinal pathway of the milk-ejection reflex in the rat |
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