title: Quantitative evaluation of myenteric ganglion cells in normal human left colon: implications for histopathological analysis.
abstract: The analysis of myenteric neurons is becoming increasingly important for the assessment of enteric nervous system injury and degeneration occurring in motor disorders of the gut. Limited information is presently available on the quantitative estimation of myenteric neurons and glial cells in paraffin-embedded colonic sections; additional data would be useful for diagnostic purposes. In this morphometric study, we performed immunohistochemistry to count myenteric neurons and glial cells in paraffin sections of human colon. Serial cross sections of formalin-fixed paraffin-embedded full-thickness normal human left colon (n = 10, age-range: 50-72 years) were examined. HuC/D and S100beta antigens were found to be the best markers for the detection of neurons and glial cells, respectively. Significant correlations were noted between the numbers of neurons/glial cells and the respective myenteric ganglion areas. These findings suggest that HuC/D-S100beta-immunostained paraffin cross sections of human colon can be regarded as valuable tools for the quantitative estimation of myenteric neurons and glial cells. Based on the present method, only a limited number of paraffin sections are needed for reliable quantitative assessments of myenteric ganglion cells, thus allowing fast and simple approaches in the settings of the histopathological diagnosis of colonic motility disorders and retrospective evaluations of pathological archival tissue specimens.
authors.affiliation: Section of Histology and Medical Embryology, Department of Human Morphology and Applied Biology, University of Pisa, Pisa, Italy.
authors.forename: Chiara
authors.initials: C
authors.lastname: Ippolito
authors.forename: Cristina
authors.initials: C
authors.lastname: Segnani
authors.forename: Roberto
authors.initials: R
authors.lastname: De Giorgio
authors.forename: Corrado
authors.initials: C
authors.lastname: Blandizzi
authors.forename: Letizia
authors.initials: L
authors.lastname: Mattii
authors.forename: Maura
authors.initials: M
authors.lastname: Castagna
authors.forename: Stefania
authors.initials: S
authors.lastname: Moscato
authors.forename: Amelio
authors.initials: A
authors.lastname: Dolfi
authors.forename: Nunzia
authors.initials: N
authors.lastname: Bernardini