The Morphology of the Sex Chromatin in the Smear of Human Oral Mucosa

The development of techniques for studying sex chromatin from oral mucosa (Moore and Barr, 1955; Marberger at al., 1955), and chromosomes from peripheral blood (Moorhead et al., 1960), has made it possible to undertake population surveys to identify individuals with abnormal sex chromosomes. The present knowledge of psychiatric effects of the sex chromosome abnormalities has been derived mainly from comparing their frequency in the psychiatric population with that in the general population.

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ABSENCE OF TRANSIENT SUPPRESSION OF SEX CHROMATIN IN FEMALE PREMATURE NEWBORNS

PEDIATRICS ◽

10.1542/peds.42.3.437 ◽

1968 ◽

Vol 42 (3) ◽

pp. 437-440

Author(s):

Takemi Homma ◽

Tadashi Kajii

Keyword(s):

Birth Weight ◽

Low Birth Weight ◽

Oral Mucosa ◽

Gestational Age ◽

Full Term ◽

The Other ◽

Premature Newborns ◽

Other Hand ◽

Sex Chromatin ◽

Term Newborns

The frequency of sex chromatin-positive nuclei during the first 7 days of life was determined in oral mucosa smears stained with lactic acetic orcein in three groups of newborn female infants: 28 cases of full-term newborns, 17 cases of infants with low birth weight (less than 2,000 gm) and high gestational age (more than 32 weeks), and 11 cases of infants with low birth weight and low gestational age (32 weeks or less). A transient suppression of sex chromatin frequency was observed for the first 3 days of life in the full-term females, as has been reported by previous workers. The infants with low birth weight and high gestational age likewise showed transient suppression. The infants with low birth weight and low gestational age, on the other hand, exhibited no comparable suppression of sex chromatin. The findings suggest that the mechanism responsible for sex chromatin suppression is related to a physiologic process that develops in the last 8 weeks of gestation.

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Sex Determination with Sex Chromatin of Epithelial Cells from the Oral Mucosa in Koreans

Yonsei Medical Journal ◽

10.3349/ymj.1961.2.1.10 ◽

1961 ◽

Vol 2 (1) ◽

pp. 10

Author(s):

Yung Keun Oh ◽

Tai Sun Shin ◽

Jong Sun Kim

Keyword(s):

Epithelial Cells ◽

Sex Determination ◽

Oral Mucosa ◽

Sex Chromatin

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Oral Smear as a Method of Chromosomal Sex Detection

PEDIATRICS ◽

10.1542/peds.17.1.140 ◽

1956 ◽

Vol 17 (1) ◽

pp. 140-140

Keyword(s):

Skin Biopsy ◽

Oral Mucosa ◽

Blood Smear ◽

New Technique ◽

Human Tissues ◽

Sex Chromatin ◽

Present Technique ◽

Mucosal Cells ◽

Ready Availability ◽

A New Technique

A new technique for determining sex by detection of characteristic chromosomal material in nuclei of human tissues is described. Previous methods have employed skin biopsy and examination of the neutrophils in a blood smear. The present technique employs examination of cells obtained by scrapings from the oral mucosa. The technique has the advantage of the ready availability of the cells to be examined and the easier identification of the sex chromatin in the large mucosal cells by relatively inexperienced observers. Furthermore repeat examinations can be made without the trauma of a skin biopsy. The accuracy of the method compares favorably with those previously described.

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Induction and Differentiation of Dental Epithelium in Vivo and in Vitro

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100053425 ◽

1982 ◽

Vol 40 ◽

pp. 142-145

Author(s):

E. J. Kollar

Keyword(s):

Connective Tissue ◽

Oral Mucosa ◽

Basal Lamina ◽

Functional Derivatives ◽

Specific Source ◽

Dental Epithelium ◽

Connective Tissue Stroma

The differentiation and maintenance of many specialized epithelial structures are dependent on the underlying connective tissue stroma and on an intact basal lamina. These requirements are especially stringent in the development and maintenance of the skin and oral mucosa. The keratinization patterns of thin or thick cornified layers as well as the appearance of specialized functional derivatives such as hair and teeth can be correlated with the specific source of stroma which supports these differentiated expressions.

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