A PEER-REVIEWED JOURNAL OF RESEARCH AND CLINICAL MEDICINEISSN 1727-2378 (Print)         ISSN 2713-2994 (Online)
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Characteristics of Sexual Development of Ethnic Khanty and Alien Population in the Middle Ob Region

DOI:10.31550/1727-2378-2021-20-3-45-49
For citation: Baitrak O.A., Mescheryakov V.V., Girsh Ya.V. Characteristics of Sexual Development of Ethnic Khanty and Alien Population in the Middle Ob Region. Doctor.Ru. 2021; 20(3): 45–49. (in Russian). DOI: 10.31550/1727-2378-2021-20-3-45-49
19 april 2021

Study Objective: To work out the sexual development standards for ethnic Khanty 7 to 17 years old and their comparative analysis with similar parameters of alien population in the Middle Ob Region of the same age.

Study Design: cross-sectional cohort comparative study.

Materials and Methods. The study included 2,554 children born in Yugra – Khanty-Mansiysk autonomous district and alien adolescents, and 2,431 ethnic Khanty children aged 7 to 17 years with health group I–II. Sexual development formulas were developed on the basis of publications by J.M. Tanner (1969–1970) and M. V. Maksimova (1977). Sexual development formulas were evaluated; the results were analysed in two groups of children and adolescents — ethnic Khanty and alien population in the Middle Ob Region. We compared the mean age (M ± SD) when each of the secondary sex characters appeared and formed.

Study Results. We found out that the Khanty develop secondary sex characters later than the alien population, both in girls and boys. Secondary sex characters are formed at the same age in both groups due to faster rate in the Khanty, save for axillary pilosis: in Khanty adolescents, this character is formed later. A distinctive feature of sexual development of Khanty boys is absence of stage P5 of pubic pilosis according to J. M. Tanner and of facial hair.

Conclusion. The patterns we found necessitate the use of a differentiated approach to evaluation of sexual development of the Khanty and alien population of Yugra – Khanty-Mansiysk autonomous district. Use of the standards developed for other population groups may cause overdiagnosis of sexual development retardation in children and adolescents in this ethnic group.

Contributions: Baitrak, O.A. — collection and statistical processing of materials, manuscript preparation; Mescheryakov, V.V. — study design, academic advising, article editing, approval of the manuscript for publication; Girsh, Ya.V. — academic advising on results, article editing, approval of the manuscript for publication.

Conflict of interest: The authors declare that they do not have any conflict of interests.

O.A. Baitrak — Surgut State University; 1 Lenin Prospect, Surgut, Russian Federation 628412. E-mail: voa-88@mail.ru

V.V. Mescheryakov (Corresponding author) — Surgut State University; 1 Lenin Prospect, Surgut, Russian Federation 628412. eLIBRARY.RU SPIN: 2032-9578. https://orcid.org/0000-0001-6875-7358. E-mail: maryvitaly@yandex.ru

Ya.V. Girsh — Surgut State University; 1 Lenin Prospect, Surgut, Russian Federation 628412. E-mail: yanaef@yandex.ru

Доктор.ру

Table

Sexual development standards for ethnic Khanty and alien population

t8_1.jpg

Fig. 1. Comparative evaluation of breast development rates (A) and menstruation (B) according to J.M. Tanner in ethnic Khanty girls and aliens in the Middle Ob Region depending on the age.

* Here and fig. 2–5: year differences between the Khanty and aliens are statistically significant (р < 0.05).

** P < 0,01

r8_1.jpg

Fig. 2. Comparative evaluation of the rates of pubic (A) and axillary (B) pilosis according to J.M. Tanner in ethnic Khanty girls and aliens in the Middle Ob Region depending on the age

r8_2.jpg

Fig. 3. Comparative evaluation of the rates of pubic (A) and axillary (B) pilosis according to J. M. Tanner in ethnic Khanty boys and aliens in the Middle Ob Region depending on the age

r8_3.jpg

Fig. 4. Comparative evaluation of the rate of external sex organs development according to J.M. Tanner in ethnic Khanty boys and aliens in the Middle Ob Region depending on the age

r8_4.jpg

Fig. 5. Comparative evaluation of the rate of voice quality changes (A) and thyroid cartilage changes (B) according to M.V. Maksimova et al. (1977) in ethnic Khanty boys and aliens in the Middle Ob Region depending on the age

r8_5.jpg

Fig. 6. Facial pilosis (F) according to M.V. Maksimova et al. (1977) in alien boys in the Middle Ob Region

r8_6.jpg

Received: 24.11.2020

Accepted: 12.01.2021


19 April 00:00
REFERENCES
  1. Dedov I.I., Peterkova V.A., Malievskiy O.A. et al. Paediatric endocrinology. M.: GEOTAR-Media; 2019. 256 p. (in Russian)
  2. Raygorodskaya N.Yu., Bolotova N.V., Polyakov V.K. et al. Indicators of sexual development of healthy boys in different periods of pituitary-gonadal activity. Pediatria. Journal named after G.N. Speransky. 2019; 98(6): 91–7. (in Russian)
  3. Deev I.А., Kolomeets I.L., Saprina T.V. et al. Sexual development of adolescents in the Tomsk Region. Pediatric Pharmacology. 2017; 14(5): 366–72. (in Russian). DOI: 10.15690/pf.v14i5.1784
  4. Bakhtiyarova A.Sh., Nerkhasimova R.G., Gayratkyzy D. et al. Peculiarities of physical development of girls and female adolescents living in environmentally unfriendly region. Pediatric and Adolescent Reproductive Health. 2016; 2: 47–8. (in Russian)
  5. Ermakova I.V., Adamovskaya O.N., Selverova N.B. Physical development, neurovegetative, hormonal and psychoemotional status of children at various stages of sexual development. New Research. 2017; 4(53): 127–39. (in Russian)
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