Expression of the serotonergic system components in the placenta in various types of preeclampsia

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Abstract

BACKGROUND: The serotonergic system plays an important role in the formation and development of the feto-placental complex. The study of the expression of the serotonin system components, including placental 5-HT2A (serotonin receptor) and SERT (serotonin transporter), in preeclampsia will create prerequisites for discovering new ways to correct hypertensive pregnancy complications and methods of influencing pregnancy outcomes.

AIM: The aim of this study was to compare the expressions of 5-HT2A and SERT in placental tissue in pure preeclampsia and its combinations with other complications of pregnancy.

MATERIALS AND METHODS: A comparative cohort study was conducted among patients with different preeclampsia phenotypes: preeclampsia (n = 6), preeclampsia and gestational diabetes mellitus (n = 6), gestational diabetes mellitus and superimposed preeclampsia (preeclampsia + chronic arterial hypertension) (n = 6), and normal pregnancy without pregnancy complications (n = 6). The expression of 5-HT2A (Abcam, USA) and SERT (BiossAntibodies, USA) was studied in placenta samples from all study groups by immunohistochemical method. Morphometric analysis was performed using the VideoTest-Morphology 5.2 program (Videotest Ltd., Russia). The database was constructed and statistical processing was performed using Microsoft Excel 2007 (Microsoft Corporation, USA) and the StatTech program v. 2.6.4 (Stattech Ltd., Russia).

RESULTS: The expression of SERT and 5-HT2A is higher in the studied pregnancy complications when compared to the normal one. The relative 5-HT2A expression area in the placenta among the studied nosologies is higher in preeclampsia without gestational diabetes mellitus or in superimposed preeclampsia in combination with chronic arterial hypertension compared to expression in placentas in preeclampsia in combination with gestational diabetes mellitus or in preeclampsia in combination with gestational diabetes mellitus and chronic arterial hypertension (p = 0.02 and p = 0.017, respectively). The relative area of SERT expression is higher in preeclampsia without gestational diabetes mellitus or chronic arterial hypertension and in preeclampsia in combination with gestational diabetes mellitus compared to preeclampsia in combination with gestational diabetes mellitus and chronic arterial hypertension (p = 0.002 and p = 0.012, respectively).

CONCLUSIONS: The highest expressions of 5-HT2A and SERT among the studied preeclampsia phenotypes were found in placentas in preeclampsia without gestational diabetes mellitus or chronic arterial hypertension.

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About the authors

Ofelia A. Bettikher

Almazov National Medical Research Centre; The Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott

Author for correspondence.
Email: ophelia.bettikher@gmail.com
ORCID iD: 0000-0002-1161-1558
SPIN-code: 4398-3964
Scopus Author ID: 57190122861
ResearcherId: AAH-8832-2020

MD, Cand. Sci. (Med.)

Russian Federation, Saint Petersburg; Saint Petersburg

Olga A. Belyaeva

Almazov National Medical Research Centre

Email: belyaevaolga0138@gmail.com
ORCID iD: 0000-0002-6970-7085
SPIN-code: 2229-5409
Russian Federation, Saint Petersburg

Albina I. Dukovich

Almazov National Medical Research Centre

Email: alyadukovich@gmail.com
ORCID iD: 0000-0002-7912-035X
Russian Federation, Saint Petersburg

Olga M. Vorobeva

Almazov National Medical Research Centre

Email: olgarasp@yandex.ru
ORCID iD: 0000-0002-1349-7349
SPIN-code: 3327-7617
Scopus Author ID: 57205331117
ResearcherId: AAZ-5818-2020

MD, Cand. Sci. (Med.)

Russian Federation, Saint Petersburg

Tatiana G. Tral

The Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott

Email: ttg.tral@yandex.ru
ORCID iD: 0000-0001-8948-4811
SPIN-code: 1244-9631
Scopus Author ID: 37666260400

MD, Cand. Sci. (Med.)

Russian Federation, Saint Petersburg

Gulrukhsor Kh. Tolibova

The Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott

Email: gulyatolibova@mail.ru
ORCID iD: 0000-0002-6216-6220
SPIN-code: 7544-4825
Scopus Author ID: 23111355700
ResearcherId: Y-6671-2018

MD, Dr. Sci. (Med.)

Russian Federation, Saint Petersburg

Viktor A. Bart

Almazov National Medical Research Centre

Email: vbartvit@mail.ru
ORCID iD: 0000-0002-9406-4421
SPIN-code: 9400-0754
Scopus Author ID: 8314645900

Cand. Sci. (Phys. & Math.)

Russian Federation, Saint Petersburg

Igor Yu. Kogan

Almazov National Medical Research Centre; The Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott

Email: ikogan@mail.ru
ORCID iD: 0000-0002-7351-6900
SPIN-code: 6572-6450
Scopus Author ID: 56895765600
ResearcherId: P-4357-2017

MD, Dr. Sci. (Med.), Professor, Corresponding Member of the Russian Academy of Sciences

Russian Federation, Saint Petersburg; Saint Petersburg

Irina E. Zazerskaya

Almazov National Medical Research Centre; The Research Institute of Obstetrics, Gynecology and Reproductology named after D.O. Ott

Email: zazera@mail.ru
ORCID iD: 0000-0003-4431-3917
SPIN-code: 5683-6741
Scopus Author ID: 55981393900
ResearcherId: AAI-1309-2020

MD, Dr. Sci. (Med.), Professor

Russian Federation, Saint Petersburg; Saint Petersburg

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Supplementary files

Supplementary Files
Action
1. JATS XML
2. Figure. Chronic placental insufficiency, dissociated form with hypervascularization and plethora of the vascular bed of the villi (a). Terminal type of placental development that corresponds to the gestational age (b). Hematoxylin and eosin staining, zoom ×200

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3. Table_3_1

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4. Table 3_1_

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5. Таб_3_2_Экспрессия SLC6A (SERT)

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6. Tabl_3_1_Экспрессия 5-HT2A

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7. Tabl_3_2_Экспрессия SLC6A (SERT)

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8. Tabl_3_2_Экспрессия 5-HT2A

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9. Tabl_3_4_Экспрессия SLC6A (SERT)

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10. Tabl_3_4_Экспрессия 5-HT2A

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СМИ зарегистрировано Федеральной службой по надзору в сфере связи, информационных технологий и массовых коммуникаций (Роскомнадзор).
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