{"id":136251,"date":"2024-09-10T11:06:02","date_gmt":"2024-09-10T11:06:02","guid":{"rendered":"https:\/\/learnexams.com\/blog\/?p=136251"},"modified":"2024-09-10T11:06:04","modified_gmt":"2024-09-10T11:06:04","slug":"a-nurse-is-caring-for-a-client-who-has-a-kidney-transplant-and-is-receiving-cyclosporine-sandimmune-a-calcineurin-inhibitor-2","status":"publish","type":"post","link":"https:\/\/www.learnexams.com\/blog\/2024\/09\/10\/a-nurse-is-caring-for-a-client-who-has-a-kidney-transplant-and-is-receiving-cyclosporine-sandimmune-a-calcineurin-inhibitor-2\/","title":{"rendered":"A nurse is caring for a client who has a kidney transplant and is receiving cyclosporine (Sandimmune), a calcineurin inhibitor"},"content":{"rendered":"\n

A nurse is caring for a client who has a kidney transplant and is receiving cyclosporine (Sandimmune), a calcineurin inhibitor. What is the primary mechanism of action of cyclosporine in this condition?<\/p>\n\n\n\n

A It inhibits the synthesis of inflammatory mediators and suppresses the activation and proliferation of immune cells.
B It blocks the activation of T cells by inhibiting the enzyme calcineurin, which is required for the transcription of interleukin-2.
C It interferes with the synthesis of nucleic acids, which are essential for the replication and function of immune cells.
D It binds to specific antigens or receptors on the surface of immune cells and either neutralizes them or induces their destruction.<\/p>\n\n\n\n

The Correct Answer and Explanation is:<\/mark><\/strong><\/p>\n\n\n\n

The primary mechanism of action of cyclosporine (Sandimmune) in the context of kidney transplantation is:<\/p>\n\n\n\n

B. It blocks the activation of T cells by inhibiting the enzyme calcineurin, which is required for the transcription of interleukin-2.<\/strong><\/p>\n\n\n\n

Explanation:<\/h3>\n\n\n\n

Cyclosporine is an immunosuppressant medication that plays a crucial role in preventing organ rejection after kidney transplantation. Its main action involves the inhibition of T-cell activation, which is critical for the immune response that can lead to transplant rejection.<\/p>\n\n\n\n

Mechanism of Action:<\/h4>\n\n\n\n
    \n
  1. Inhibition of Calcineurin<\/strong>: Cyclosporine specifically inhibits the enzyme calcineurin. Calcineurin is a calcium-dependent serine\/threonine phosphatase enzyme that is essential for the activation of T-cells. Under normal circumstances, calcineurin dephosphorylates nuclear factor of activated T-cells (NFAT), which then translocates to the nucleus and initiates the transcription of interleukin-2 (IL-2) and other cytokines.<\/li>\n\n\n\n
  2. Impact on Interleukin-2 (IL-2)<\/strong>: Interleukin-2 is a key cytokine involved in the proliferation and activation of T-cells. By inhibiting calcineurin, cyclosporine prevents the activation of NFAT, which in turn inhibits the transcription of IL-2. This reduction in IL-2 levels decreases the proliferation and activation of T-cells, leading to a suppressed immune response.<\/li>\n\n\n\n
  3. Clinical Effect<\/strong>: By suppressing the activation of T-cells, cyclosporine reduces the likelihood of acute rejection episodes following kidney transplantation. This immunosuppressive action is vital because the transplanted kidney is recognized as a foreign object by the recipient’s immune system. Without adequate suppression of the immune response, the body would attack the transplanted organ.<\/li>\n<\/ol>\n\n\n\n

    Alternative Options:<\/h4>\n\n\n\n
      \n
    • Option A<\/strong>: Involves inhibition of inflammatory mediators, which is not the primary action of cyclosporine. This option is more characteristic of other immunosuppressants or anti-inflammatory drugs.<\/li>\n\n\n\n
    • Option C<\/strong>: Refers to inhibition of nucleic acid synthesis, which is not the primary mechanism of cyclosporine. This mechanism is more associated with other drugs like antimetabolites (e.g., azathioprine).<\/li>\n\n\n\n
    • Option D<\/strong>: Describes the action of drugs that bind to specific antigens or receptors, which is not applicable to cyclosporine’s mechanism of action.<\/li>\n<\/ul>\n\n\n\n

      In summary, cyclosporine’s primary action in kidney transplantation is the inhibition of calcineurin, leading to reduced activation of T-cells and subsequently less production of IL-2, which helps in preventing transplant rejection.<\/p>\n","protected":false},"excerpt":{"rendered":"

      A nurse is caring for a client who has a kidney transplant and is receiving cyclosporine (Sandimmune), a calcineurin inhibitor. What is the primary mechanism of action of cyclosporine in this condition? A It inhibits the synthesis of inflammatory mediators and suppresses the activation and proliferation of immune cells.B It blocks the activation of T […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[25],"tags":[],"class_list":["post-136251","post","type-post","status-publish","format-standard","hentry","category-exams-certification"],"_links":{"self":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/136251","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/comments?post=136251"}],"version-history":[{"count":0,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/posts\/136251\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/media?parent=136251"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/categories?post=136251"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.learnexams.com\/blog\/wp-json\/wp\/v2\/tags?post=136251"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}