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Inositol 1,4,5-Trisphosphate Receptors in Hypertension

مستقبلات إينوسيتول 1،4،5 - ثلاثي الفوسفات في ارتفاع ضغط الدم
Authors: Ali H. Eid; Ali H. Eid; Ahmed F. El-Yazbi; Ahmed F. El-Yazbi; Fouad Zouein; Abdelilah Arredouani; Allal Ouhtit; +4 Authors
APC: 2,207.26 EUR

Inositol 1,4,5-Trisphosphate Receptors in Hypertension

Abstract

L'hypertension chronique reste une cause majeure de mortalité et de morbidité mondiales. Il s'agit d'une maladie complexe qui est la manifestation clinique de multiples troubles génétiques, environnementaux, nutritionnels, hormonaux et liés au vieillissement. Les preuves soutiennent un rôle du vieillissement vasculaire dans le développement de l'hypertension impliquant une altération de la fonction endothéliale ainsi qu'une altération de l'homéostasie calcique des cellules musculaires lisses vasculaires (CMLV) entraînant une augmentation du tonus myogénique. Les modifications des taux de calcium intracellulaire libre ([Ca2+] i ) sont médiées soit par l'afflux de Ca2+ de l'espace extracellulaire, soit par la libération de Ca2+ des réserves intracellulaires, principalement du réticulum sarcoplasmique (SR). L'afflux de Ca2+ extracellulaire se produit principalement par les canaux Ca2+ voltage-dépendants (VGCC), les canaux Ca2+ à fonctionnement en magasin (SOC) et les canaux activés par la libération de Ca2+ (CRAC), tandis que la libération de SR-Ca2 + se produit par les récepteurs de l'inositol trisphosphate (IP3R) et les récepteurs de la ryanodine (RyR). La libération deSR-Ca2 + par IP3R, sous forme d'ondes Ca2+, contribue non seulement à la contraction des CMLV et régule la fonction des CCGV, mais est également intimement impliquée dans le remodelage structurel des artères de résistance à l'hypertension. Cela implique un changement phénotypique des CMLV ainsi qu'une altération des mécanismes de signalisation du Ca2+ cytoplasmique, un phénomène étroitement lié au processus de vieillissement. Plusieurs éléments de preuve impliquent des changements dans les niveaux d'expression/fonction des isoformes IP3R dans le développement de l'hypertension, du changement phénotypique VSMC et du vieillissement vasculaire. La présente revue examine les connaissances actuelles de ces mécanismes dans une approche intégrative et suggère en outre de nouvelles cibles potentielles pour la gestion et le traitement de l'hypertension.

La hipertensión crónica sigue siendo una de las principales causas de mortalidad y morbilidad a nivel mundial. Es una enfermedad compleja que es la manifestación clínica de múltiples trastornos genéticos, ambientales, nutricionales, hormonales y relacionados con el envejecimiento. La evidencia respalda un papel para el envejecimiento vascular en el desarrollo de la hipertensión que implica un deterioro en la función endotelial junto con una alteración en la homeostasis del calcio de las células del músculo liso vascular (VSMC) que conduce a un aumento del tono miogénico. Los cambios en los niveles de calcio intracelular libre ([Ca2+] i ) están mediados por la afluencia de Ca2+ desde el espacio extracelular o la liberación de Ca2+ desde las reservas intracelulares, principalmente el retículo sarcoplásmico (SR). La afluencia de Ca2+ extracelular se produce principalmente a través de canales de Ca2+ dependientes de voltaje (VGCC), canales de Ca2+ operados por tiendas (SOC) y canales activados por liberación de Ca2+ (crac), mientras que la liberación de SR-Ca2 + se produce a través del receptor de trifosfato de inositol (IP3R) y los receptores de rianodina (RyR). La liberación de SR-Ca2 + mediada por IP3R, en forma de ondas de Ca2+, no solo contribuye a la contracción de VSMC y regula la función de VGCC, sino que también está íntimamente involucrada en la remodelación estructural de las arterias de resistencia en la hipertensión. Esto implica un cambio fenotípico de los VSMC, así como una alteración de la maquinaria de señalización citoplasmática de Ca2+, un fenómeno estrechamente relacionado con el proceso de envejecimiento. Varias líneas de evidencia implican cambios en los niveles de expresión/función de las isoformas de IP3R en el desarrollo de hipertensión, cambio fenotípico de VSMC y envejecimiento vascular. La presente revisión analiza el conocimiento actual de estos mecanismos en un enfoque integrador y sugiere nuevos objetivos potenciales para el manejo y tratamiento de la hipertensión.

Chronic hypertension remains a major cause of global mortality and morbidity. It is a complex disease that is the clinical manifestation of multiple genetic, environmental, nutritional, hormonal, and aging-related disorders. Evidence supports a role for vascular aging in the development of hypertension involving an impairment in endothelial function together with an alteration in vascular smooth muscle cells (VSMCs) calcium homeostasis leading to increased myogenic tone. Changes in free intracellular calcium levels ([Ca2+] i ) are mediated either by the influx of Ca2+ from the extracellular space or release of Ca2+ from intracellular stores, mainly the sarcoplasmic reticulum (SR). The influx of extracellular Ca2+ occurs primarily through voltage-gated Ca2+ channels (VGCCs), store-operated Ca2+ channels (SOC), and Ca2+ release-activated channels (CRAC), whereas SR-Ca2+ release occurs through inositol trisphosphate receptor (IP3R) and ryanodine receptors (RyRs). IP3R-mediated SR-Ca2+ release, in the form of Ca2+ waves, not only contributes to VSMC contraction and regulates VGCC function but is also intimately involved in structural remodeling of resistance arteries in hypertension. This involves a phenotypic switch of VSMCs as well as an alteration of cytoplasmic Ca2+ signaling machinery, a phenomena tightly related to the aging process. Several lines of evidence implicate changes in expression/function levels of IP3R isoforms in the development of hypertension, VSMC phenotypic switch, and vascular aging. The present review discusses the current knowledge of these mechanisms in an integrative approach and further suggests potential new targets for hypertension management and treatment.

لا يزال ارتفاع ضغط الدم المزمن سببًا رئيسيًا للوفيات والأمراض العالمية. وهو مرض معقد هو المظهر السريري للعديد من الاضطرابات الوراثية والبيئية والتغذوية والهرمونية والشيخوخة. تدعم الأدلة دور شيخوخة الأوعية الدموية في تطور ارتفاع ضغط الدم الذي ينطوي على ضعف في وظيفة البطانة جنبًا إلى جنب مع تغيير في توازن الكالسيوم في الخلايا العضلية الملساء الوعائية (VSMCs) مما يؤدي إلى زيادة التوتر العضلي. يتم التوسط في التغيرات في مستويات الكالسيوم داخل الخلايا الحرة ([Ca2 +] i ) إما عن طريق تدفق Ca2+ من الفضاء خارج الخلية أو إطلاق Ca2 + من المخازن داخل الخلايا، وخاصة الشبكة الساركوبلازمية (SR). يحدث تدفق Ca2 + خارج الخلية في المقام الأول من خلال قنوات Ca2+ ذات بوابات الجهد (VGCCs)، وقنوات Ca2+ التي تعمل بالتخزين (SOC)، والقنوات المنشطة بالإطلاق Ca2 + (CRAC)، في حين يحدث إطلاق SR - Ca2 + من خلال مستقبلات إينوزيتول ثلاثي الفوسفات (IP3R) ومستقبلات الريانودين (RyRs). لا يساهم إطلاق SR - Ca2 + بوساطة IP3R، في شكل موجات Ca2 +، في تقلص VSMC وينظم وظيفة VGCC فحسب، بل يشارك أيضًا بشكل وثيق في إعادة التشكيل الهيكلي لشرايين المقاومة في ارتفاع ضغط الدم. يتضمن ذلك تبديلًا نمطيًا ظاهريًا لـ VSMCs بالإضافة إلى تغيير آلية إرسال إشارات Ca2 + السيتوبلازمية، وهي ظاهرة مرتبطة ارتباطًا وثيقًا بعملية الشيخوخة. تتضمن عدة خطوط من الأدلة تغييرات في مستويات التعبير/الوظيفة لأشكال IP3R المتساوية في تطور ارتفاع ضغط الدم، والتبديل الظاهري VSMC، وشيخوخة الأوعية الدموية. يناقش هذا الاستعراض المعرفة الحالية بهذه الآليات في نهج تكاملي ويقترح كذلك أهدافًا جديدة محتملة لإدارة وعلاج ارتفاع ضغط الدم.

Countries
Italy, Qatar
Keywords

Cell biology, hypertension, Aging; Ca 2+; Hypertension; IP 3 R ; VSMC; Physiology; Physiology (medical), Physiology, Extracellular, Inositol trisphosphate receptor, Voltage-dependent calcium channel, Renin-Angiotensin System in Cardiovascular Physiology and Pathology, Endocrinology, Smooth muscle, Biochemistry, Genetics and Molecular Biology, Health Sciences, QP1-981, Calcium Signaling, IP3R, Molecular Biology, Biology, Internal medicine, aging, VSMC, Life Sciences, Calcium signaling, Inositol trisphosphate, Vascular smooth muscle, Sensory Systems, Intracellular, Molecular Mechanisms of Ion Channels Regulation, Ca2+, Ryanodine receptor, Hypertension, Calcium metabolism, Calcium in biology, Medicine, Calcium, Calcium Channels, Cardiology and Cardiovascular Medicine, Inositol, Endoplasmic reticulum, Calcium Signaling and Ion Channels in Sensation, Neuroscience, Receptor

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selected citations
These citations are derived from selected sources.
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!
32
Top 10%
Top 10%
Top 10%
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