[Characteristics of the expression of the transcription factor pSTAT3 in asthma].

Abstract:

AIM:To investigate the transcription factor pSTAT3 in overweight asthmatics on a model of peripheral blood mononuclear cells at baseline and during recombinant leptin modulation. MATERIAL AND METHODS:A flow fluorometric assay was used according to the standard Bio-Plex protocol on a Bio-Plex immunoanalyzer (a flow fluorimeter) (Bio-Rad, USA) using xMAP technology at baseline and during modulation with recombinant leptin (Leptin, human, recombinant, expressed in a E. coli, Sigma, USA). RESULTS:There was an obvious reduction in the level of the transcription factor pSTAT3 in patients with non-allergic asthma and an increase in that in patients with allergic asthma (AA). Recombinant leptin modulation of pSTAT3 levels caused their paradoxical decrease in both overweight women younger than 45 years of age with AA and in those with non-allergic asthma. CONCLUSION:The elevated level of the transcription factor pSTAT3 in AA is probably due to the overexpression of pSTAT3 in this group of patients. The paradoxical decrease in pSTAT3 levels in overweight women under 45 years of age with AA, which is similar in the non-allergic asthma group, can be explained by the enhanced expression of negative SOCS3 regulators and by leptin resistance. :Цель исследования. Изучить транскрипционный фактор pSTAT3 у больных бронхиальной астмой (БА) с избыточной массой тела на модели мононуклеаров периферической крови исходно и в условиях модуляции рекомбинатным лептином. Материалы и методы. Использовали метод проточной флуориметрии по стандартному протоколу Bio-Plex на иммуноанализаторе (проточном флюориметре) Bio-Plex («Bio-Rad», CША) с применением технологии xMAP исходно и в условиях модуляции рекомбинантным лептином (Leptin, human, recombinant expressed in a E. сoli «Sigma», CША) Результаты. Выявлено выраженное снижение уровня транскрипционного фактора pSTAT3 у больных неаллергической БА и повышение уровня этого транскрипционного фактора у больных аллергической БА (АБА). При модуляции уровня pSTAT3 рекомбинантным лептином отмечалось парадоксальное снижение pSTAT3 у женщин, больных АБА, с избыточной массой тела моложе 45 лет, как и у больных неаллергической БА. Заключение. Повышение уровня транскрипционного фактора pSTAT3 при АБА, вероятно, является следствием суперэкспрессии pSTAT3 у больных этой группы. Парадоксальное снижение уровня pSTAT3 у женщин при АБА моложе 45 лет с избыточной массой тела, аналогичное группе больных неаллергической БА, может быть объяснено усилением экспрессии факторов негативного контроля SOCS3 и лептинорезистентностью.

journal_name

Ter Arkh

journal_title

Terapevticheskii arkhiv

authors

Mineev VN,Lalaeva TM

doi

10.17116/terarkh201789348-53

subject

Has Abstract

pub_date

2017-01-01 00:00:00

pages

48-53

issue

3

eissn

0040-3660

issn

2309-5342

journal_volume

89

pub_type

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