PMID- 20407859 OWN - NLM STAT- MEDLINE DCOM- 20110203 LR - 20211020 IS - 1138-7548 (Print) IS - 1138-7548 (Linking) VI - 66 IP - 1 DP - 2010 Mar TI - Hypophysectomy and neurointermediate pituitary lobectomy decrease humoral immune responses to T-independent and T-dependent antigens. PG - 7-13 LID - 10.1007/s13105-010-0004-z [doi] AB - In rats, hypophysectomy (HYPOX) or neurointermediate pituitary lobectomy (NIL) reduce humoral and cell-mediated immune responses. However, to our knowledge, the differences in the effects of anterior versus posterior pituitary hormones on the immune responses have not been studied to date. We compared in rats, the effects of sham surgery (SHAM), HYPOX, and NIL on humoral immune responses to T cell-independent (TI) type 1 antigen DNP-LPS and to TI type 2 antigen DNP-FICOLL, as well as to T cell-dependent (TD) antigens ovalbumin (OVA) and bovine serum albumin (BSA). The results showed that: (1) both HYPOX and NIL induced a similar and significant decrease in IgM responses towards TI-1 antigens, (2) NIL but not HYPOX induced a decreased IgM response to TI-2 antigens, and (3) both HYPOX and NIL induced similar and significant decrease in IgG responses to TI-2 antigens. Compared with the SHAM group, IgM responses to both TD antigens did not change in HYPOX and NIL animals, whereas the IgG responses to OVA and BSA significantly decreased in HYPOX and NIL animals. These results indicate that hormones of the anterior and posterior pituitary play their own role in the regulation of humoral immune responses. FAU - Quintanar-Stephano, A AU - Quintanar-Stephano A AD - Departamento de Fisiologia y Farmacologia, Centro de Ciencias Basicas, Universidad Autonoma de Aguascalientes, Aguascalientes, Mexico. FAU - Abarca-Rojano, E AU - Abarca-Rojano E FAU - Jarillo-Luna, R A AU - Jarillo-Luna RA FAU - Rivera-Aguilar, V AU - Rivera-Aguilar V FAU - Ventura-Juarez, J AU - Ventura-Juarez J FAU - Berczi, I AU - Berczi I FAU - Kovacs, K AU - Kovacs K FAU - Campos-Rodriguez, R AU - Campos-Rodriguez R LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100421 PL - Spain TA - J Physiol Biochem JT - Journal of physiology and biochemistry JID - 9812509 RN - 0 (Antigens, T-Independent) RN - 0 (Immunoglobulin G) RN - 0 (Immunoglobulin M) RN - 27432CM55Q (Serum Albumin, Bovine) RN - 9006-59-1 (Ovalbumin) SB - IM MH - Animals MH - Antigens, T-Independent/*immunology MH - Hypophysectomy MH - *Immunity, Humoral MH - Immunoglobulin G/immunology/metabolism MH - Immunoglobulin M/immunology/metabolism MH - Male MH - Ovalbumin/immunology MH - Pituitary Gland/*immunology/surgery MH - Rats MH - Serum Albumin, Bovine/immunology MH - T-Lymphocytes/*immunology EDAT- 2010/04/22 06:00 MHDA- 2011/02/04 06:00 CRDT- 2010/04/22 06:00 PHST- 2009/06/04 00:00 [received] PHST- 2009/08/04 00:00 [accepted] PHST- 2010/04/22 06:00 [entrez] PHST- 2010/04/22 06:00 [pubmed] PHST- 2011/02/04 06:00 [medline] AID - 10.1007/s13105-010-0004-z [doi] PST - ppublish SO - J Physiol Biochem. 2010 Mar;66(1):7-13. doi: 10.1007/s13105-010-0004-z. Epub 2010 Apr 21.