title: Modifications of carbohydrate residues in the sheep oviductal ampulla after superovulation.
abstract: Epithelium of oviductal ampulla was studied in normal and in superovulated sheep using morphologic analysis and lectin glycohistochemistry. The lining epithelium consisted of two types of cells, ciliated and nonciliated cells. Unlike superovulated samples, the nonciliated cells from control ewes showed apical protrusions indicating an apocrine secretory activity. The ciliated cells showed lectin-binding sites mainly at the level of the cilia which bound all the used lectins except Peanut agglutinin, suggesting the lack of glycans terminating with Galβ1,3GalNAc. In superovulated specimens, the ciliated cells with high mannosylated glycans Concanavalin A (Con A) and GlcNAc and GalNac termini Griffonia simplicifolia agglutinin II (GSA II) and Dolicurus biflorus agglutinin (DBA) decreased. The luminal surface of nonciliated cells showed all investigated sugar residues in controls, whereas it was lacking in high mannosylated (Con A) and terminal GalNAcα1,3(LFucα1,2)Galβ1,3/4GlcNAcβ1 sequence (DBA) in superovulated ewes. Apical protrusions from control ampullae nonciliated cells showed glycans containing mannose, GlcNac, GalNAc, galactose, and α2,3-linked sialic acid (Con A, KOH-sialidase- Wheat germ agglutnin [WGA], GSA II, SBA, Griffonia simplicifolia agglutinin-isolectin B4 [GSA I-B4], Maackia amurensis agglutinin II [MAL II]). The supranuclear cytoplasm of nonciliated cells expressed terminal GlcNAc (GSA II) in all specimens, also O-linked glycans (mucin-type glycans) with GalNAc and sialic acid termini (Helix pomatia agglutinin [HPA] and MAL II) in control animals, and also N-linked glycans with fucose, galactose, lactosamine, and α2,3-linked sialic acid termini (Ulex europaeus agglutinin I [UEA I], GSA I-B4, Ricinus communis agglutinin120 [RCA120], and Sambucus nigra agglutinin [SNA] ) in superovulated ewes. These results report for the first time that the superovulation treatment affects the secretory activity and the glycan pattern of the epithelium lining the sheep oviductal ampulla.
authors.affiliation: Department of Emergency and Organ Transplantation (DETO), Veterinary Clinics and Animal Productions Section, University of Bari Aldo Moro, Bari, Italy. Electronic address: salvatore.desantis@uniba.it.
authors.forename: S
authors.initials: S
authors.lastname: Desantis
authors.affiliation: Department of Emergency and Organ Transplantation (DETO), Veterinary Clinics and Animal Productions Section, University of Bari Aldo Moro, Bari, Italy.
authors.forename: G
authors.initials: G
authors.lastname: Accogli
authors.affiliation: Department of Emergency and Organ Transplantation (DETO), Veterinary Clinics and Animal Productions Section, University of Bari Aldo Moro, Bari, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Silvestre
authors.affiliation: Department of Emergency and Organ Transplantation (DETO), Veterinary Clinics and Animal Productions Section, University of Bari Aldo Moro, Bari, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Binetti
authors.affiliation: Department of Emergency and Organ Transplantation (DETO), Veterinary Clinics and Animal Productions Section, University of Bari Aldo Moro, Bari, Italy.
authors.forename: M
authors.initials: M
authors.lastname: Caira
authors.affiliation: Department of Emergency and Organ Transplantation (DETO), Veterinary Clinics and Animal Productions Section, University of Bari Aldo Moro, Bari, Italy.
authors.forename: G M
authors.initials: GM
authors.lastname: Lacalandra
mesh_terms: D000818:Animals; D050260:Carbohydrate Metabolism / Q000502:physiology*; D002241:Carbohydrates / Q000737:chemistry*; D003008:Cloprostenol / Q000008:administration & dosage / Q000494:pharmacology; D004848:Epithelium / Q000033:anatomy & histology / Q000502:physiology; D005260:Female; D003425:Flurogestone Acetate / Q000008:administration & dosage / Q000494:pharmacology; D005640:Follicle Stimulating Hormone / Q000008:administration & dosage / Q000494:pharmacology; D007986:Luteinizing Hormone / Q000008:administration & dosage / Q000494:pharmacology; D010057:Oviducts / Q000378:metabolism*; D012756:Sheep / Q000502:physiology*; D013480:Superovulation / Q000187:drug effects* / Q000502:physiology
chemical_list: D002241:Carbohydrates; D003008:Cloprostenol; D007986:Luteinizing Hormone; D005640:Follicle Stimulating Hormone; D003425:Flurogestone Acetate
keywords: Glycoconjugate; Lectin histochemistry; Ovarian hyperstimulation; Oviduct; Sheep