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Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the redux-framework domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the redux-framework domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the wp-plugin-hostgator domain was triggered too early. This is usually an indicator for some code in the plugin or theme running too early. Translations should be loaded at the init action or later. Please see Debugging in WordPress for more information. (This message was added in version 6.7.0.) in /home1/express/public_html/wp-includes/functions.php on line 6131

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"ديكساميثازون".. "السلاح الجديد" في المعركة ضد فيروس كورونا - Algerian Express

“ديكساميثازون”.. “السلاح الجديد” في المعركة ضد فيروس كورونا


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الجيريان اكسبرس: وصفت منظمة الصحة العالمية، نجاح باحثين بريطانيين، في علاج حالات إصابة حرجة بفيروس كورونا المستجد، بدواء من عائلة “الستيرويدات”، بالإنجاز العلمي، فما هو هذا الدواء وكيف يعمل وماهي آثاره الجانبية ودواعي استعماله؟

وتعليقا على إعلان فريق العلماء في جامعة أوكسفورد البريطانية عن النتائج الإيجابية التي سجلها دواء “ديكساميثازون”، من ناحية تقليل الوفيات في صفوف مرضى كورونا ممن يتنفسون بواسطة قوارير الأكسجين أو أجهزة التنفس الاصطناعي، قال المدير العام للمنظمة تيدروس أدهانوم، إنه العلاج الأول الذي أثبت فعاليته مع هؤلاء المرضى.

أما رئيس الوزراء البريطاني بوريس جونسون فقال: “أنا فخور بأن علماء بريطانيين بدعم وتمويل من الحكومة البريطانية قد توصلوا لعلاج ثبتت فعاليته في مواجهة فيروس كورونا، وسيكون بالإمكان توفير هذا الدواء بشكل فوري في هيئة الخدمات الطبية، ولدينا مخزون كاف حتى في حال حدوث موجة تفشي ثانية”.

وبحسب العلماء المشرفين على الدراسة فإن الدواء مفيد للمرضى الذين يعانون من أعراض متقدمة من جرّاء فيروس كورونا مما استلزم إدخالهم للعناية المركزة، وإخضاعهم للعلاج بأجهزة التنفس.

ما هو “الدواء المنقذ”؟

ينتمي عقار”ديكساميثازون” لعائلة “الستيرويدات” والتي تفيد بتقليل الالتهابات، وقد استخدم في علاج الربو والالتهاب المفصلي الروماتويدي، في ستينيات القرن الماضي.

وبحسب الأستاذ ومستشار علاج الأمراض المعدية الدكتور ضرار بلعاوي، فإن استخدام “ديكساميثازون” وارد في بروتوكولات العلاج الخاصة بكوفيد-19 منذ تفشي جائحة كورونا، إلا أن الدراسة أثبتت علميا فعاليته مع فئة معينة من مرضى الوباء.

وفي الدراسة التي أثبتت فعالية “ديكساميثازون” مع فيروس كورونا، أعطي 2104 مريضا 6 ميليغرام من الدواء مرة واحدة على مدار شهر عن طريق الفم، أو الحقن الوريدي لعشرة أيام.

وقارن الباحثون النتائج بمتابعة المتغيرات لدى من أعطي لهم العلاج والباقين في العينة الاختبارية والتي تكونت من 4321 مريضا.

ووجد العلماء أنه على مدى 28 يوما، كان معدل الوفيات بين المرضى الذين يحتاجون إلى التهوية عبر أجهزة التنفس الصناعية 41 في المئة، أما بالنسبة لأولئك الذين يحتاجون إلى الأكسجين فكان في حدود 25 في المئة.

وكان معدل الوفيات بين أولئك المرضى الذي لا يحتاجون إلى دعم لجهازهم التنفسي، 13 في المئة، حسبما ذكرت شبكة “سكاي نيوز” البريطانية.

وتعليقا على نتائج الدراسة، قالت الأستاذة والباحثة في علم الأدوية الدكتورة ميس عبسي في حديث لموقع “سكاي نيوز عربية”، إن “ديكساميثازون” مضاد التهاب مثبّط مناعي مشابه صنعي للـ”كورتيزون”، ويحول دون تحرر الالتهابات من الخلايا.

وأضافت ميس قائلة: “يستعمل الدواء مع الأمراض التي تترافق بالتهابات وعندما يكون الجهاز المناعي فعالا للغاية مثل التهاب المفاصل والذئبة الحمامية”.

ووصفت ميس الدواء بأنه ليس “علاجا سحريا” لكورونا، ولكنه الأول الذي يثبت فعاليته في تخفيض معدل الوفيات مع الحالات الحرجة لمرضى كورونا، وذلك عبر تجارب سريرية واسعة، مشددة على أن استعماله ضروري أن يترافق مع أدوية أخرى مكملة له، تغطي مجالات أخرى كآليات هجوم الفيروس، والحيلولة دون تغلغله في الخلايا.

وبدوره نبّه أستاذ اقتصاديات الصحة وعلم انتشار الأوبئة، إسلام عنان، من أن “ديكساميثازون” يعد واحدا من أكثر الأدوية القادرة على علاج أمراض كثيرة، إلا أن آثاره الجانبية عديدة ومرتبطة بالجرعات التي يصفها الطبيب لكل حالة، محذرا من أخذه للوقاية من كوفيد-19، أو بدون استشارة طبية.

Algerian Express

المصدر
"سكاي نيوز" البريطانية.
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