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Определение содержания кальция в Ñ€Ð°Ð·Ð»Ð¸Ñ‡Ð½Ñ‹Ñ Ñ‚ÐºÐ°Ð½ÑÑ Ñƒ крыс с моделированной почечной недостаточностью

выпускная квалификационная работа магистра

Определение содержания кальция в Ñ€Ð°Ð·Ð»Ð¸Ñ‡Ð½Ñ‹Ñ Ñ‚ÐºÐ°Ð½ÑÑ Ñƒ крыс с моделированной почечной недостаточностью

Abstract

Работа посвящена оценке степени влияния ¾ НЭ массы почки, с последующим развитием дисфункции почек, на изменение гомеостаза кальция у крыс линии SHR на различных сроках наблюдения 2, 4 и 6 месяцев. Всего n=54 животных принимали участие в эксперименте. Анализировались следующие показатели: креатинин (sCr), мочевина (sUr), неорганический фосфат (sPi), содержание кальция (sCa) в сыворотке крови и аналогичные показатели мочи: uPi, uCa, диурез (D). Так же определяли уровень ПТГ в сыворотке,  рассчитывали экскретируемую фракцию (FECa) и абсолютную экскрецию (UCa24) Ca с мочой. Методом ААС определили концентрацию кальция в ткани миокарда левого желудочка и почки. Полученные результаты свидетельствуют о том, что ¾ НЭ влияет на развитие ХБП у крыс уже на ранних сроках наблюдения, однако не приводит к увеличению АД, ИММ и ИММЛЖ. В группе NE2 отмечается значимый рост sUr, однако уровень sCr был значимо выше на всех сроках наблюдения, хотя CCr достоверно снижался только на раннем сроке наблюдения. На поздних сроках отмечено повышенное содержание sPi, что свидетельствует о развитии гиперфосфатемии, что в свою очередь, сопровождается изменением гомеостаза кальция: увеличением доли UCa24, sCa, повышенным содержанием кальция в ткани миокарда левого желудочка. На 4 месяц после НЭ зафиксировано снижение концентрации кальция в почечной ткани. Полученные экспериментальные данные могут иметь практическую значимость в разработки методов коррекции гомеостаза кальция при ХБП.

The study was devoted to the evaluation of the degree of influence of ¾ NE of the mass kidney, followed by the development of renal dysfunction, on the changes in calcium homeostasis in SHR rats at different follow-up periods of 2, 4 and 6 months. A total of n=54 animals participated in the experiment. The following parameters were analyzed: creatinine (sCr), urea (sUr), inorganic phosphate (sPi), serum calcium content (sCa) and similar parameters of urine: uPi, uCa, diuresis (D).Also we determined serum PTH level, calculated the excreted fraction (FECa) and absolute excretion (UCa24) of Ca with urine. Calcium concentration in myocardial tissue of the left ventricle and kidney was determined by the AAS method. The results indicate that ¾ NE affects the development of CKD in rats early in the follow-up, but does not lead to an increase in BP, MMI and MLVMI. In the NE2 group, there was a significant increase in sUr, but sCr levels were significantly higher at all follow-up periods, although CCr decreased significantly only at the early follow-up period. At late terms there was an increased content of sPi, which indicates the development of hyperphosphatemia, which, in turn, is accompanied by changes in calcium homeostasis: increase in UCa24, sCa, increased calcium content in left ventricular myocardial tissue. At the 4th month after NE a decrease in calcium concentration in the renal tissue was recorded. The experimental data obtained may be of practical significance in the development of methods of correction of calcium homeostasis in CKD.

Keywords

arterial hypertension, гипертрофия левого желудочка, calcium, ремоделирование миокарда, кальций, myocardial remodeling, calcium exchange, артериальная гипертензия, left ventricular hypertrophy, calcification of organs, nephrectomy, нефрэктомия, Биофизика, обмен кальция, Ñ Ñ€Ð¾Ð½Ð¸Ñ‡ÐµÑÐºÐ°Ñ болезнь почек, кальцификация органов, chronic kidney disease

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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