title: Neonatal B lymphocyte subpopulations and method of delivery.
abstract: We studied four groups of healthy term newborn infants: (1) 11 infants born by vaginal delivery; (2) 11 infants born by elective cesarean section; (3) 10 infants born by emergency cesarean section with labor, and (4) 10 infants born by complicated vaginal delivery. Total and differential leukocyte counts, cortisol blood level, and B lymphocyte subpopulations (SmIg, sIgD, sIgM, CD19, CD20, CD21, CD23) were evaluated in cord blood samples from the four infant groups. Furthermore, the Pentothal blood level was measured in infants born by elective cesarean section and in their mothers at delivery. Higher total and differential leukocyte counts and cortisol blood levels were observed in group 1 and 4 infants as compared with group 2 and 3 infants. A significant correlation was observed between cortisol blood level and leukocyte counts. The percentages of positivity to cell surface markers of B lymphocyte subpopulations were significantly higher in infants born by elective cesarean section. A negative significant correlation of thiopentone with sIgM and CD21 was observed. These data indicate a significant influence of method of delivery and of thiopentone on B lymphocyte subpopulations.
authors.affiliation: Division of Neonatal Intensive Care, IRCCS Policlinico, San Matteo, Pavia, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Gasparoni
authors.forename: R
authors.initials: R
authors.lastname: Maccario
authors.forename: G
authors.initials: G
authors.lastname: Chirico
authors.forename: C
authors.initials: C
authors.lastname: Belloni
authors.forename: G
authors.initials: G
authors.lastname: Mingrat
authors.forename: D
authors.initials: D
authors.lastname: De Amici
authors.forename: M R
authors.initials: MR
authors.lastname: Bonora
authors.forename: G
authors.initials: G
authors.lastname: Rondini
mesh_terms: D000704:Analysis of Variance; D015703:Antigens, CD / Q000097:blood; D018941:Antigens, CD19; D018951:Antigens, CD20; D000944:Antigens, Differentiation, B-Lymphocyte / Q000032:analysis / Q000097:blood; D001402:B-Lymphocytes / Q000276:immunology*; D036861:Delivery, Obstetric; D005312:Fetal Blood / Q000166:cytology* / Q000276:immunology*; D006801:Humans; D006854:Hydrocortisone / Q000097:blood; D007072:Immunoglobulin D / Q000097:blood; D007075:Immunoglobulin M / Q000097:blood; D007231:Infant, Newborn; D007958:Leukocyte Count; D011947:Receptors, Antigen, B-Cell / Q000032:analysis; D011951:Receptors, Complement / Q000032:analysis; D017464:Receptors, Complement 3d; D011961:Receptors, Fc / Q000032:analysis; D017455:Receptors, IgE; D012044:Regression Analysis; D013874:Thiopental / Q000493:pharmacokinetics / Q000494:pharmacology
chemical_list: D015703:Antigens, CD; D018941:Antigens, CD19; D018951:Antigens, CD20; D000944:Antigens, Differentiation, B-Lymphocyte; D007072:Immunoglobulin D; D007075:Immunoglobulin M; D011947:Receptors, Antigen, B-Cell; D011951:Receptors, Complement; D017464:Receptors, Complement 3d; D011961:Receptors, Fc; D017455:Receptors, IgE; C033027:secretory IgM; D013874:Thiopental; D006854:Hydrocortisone