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🩺 Health🌍 World🦠Coronavirus

AstraZeneca antibody cocktail study shows success treating COVID-19

“أسترازينيكا” تعلن نجاح عقار “كوكتيل” الأجسام المضادة لـ”كوفيد-19″ في التجارب


AstraZeneca’s antibody cocktail against COVID-19, which has proven to work as a preventative shot in the non-infected, was also shown to save lives and prevent severe disease when given as treatment within a week of first symptoms.

The drug, a combination of two antibodies called AZD7442, reduced the risk of severe COVID-19 or death by 50% in non-hospitalised patients who have had symptoms for seven days or less, the Anglo-Swedish drugmaker said on Monday.

The risk reduction was even better in patients who started therapy within just five days of initial symptoms, but AstraZeneca joins an already crowded field of medicines that were shown to prevent deterioration in patients with mild disease when given soon after diagnosis.

AstraZeneca executive Mene Pangalos said in a media call that the treatment results would mainly underscore the potential future use as a non-vaccine prevention.FWN2R716N

“If and when this is approved it will be used in the treatment setting as well. But the real differentiator for this antibody is going to be in the prophylactic setting,” he said.

Similar therapies made with a class of drugs called monoclonal antibodies are being developed by Regeneron (REGN.O), Eli Lilly (LLY.N) and GlaxoSmithKline (GSK.L) with partner Vir (VIR.O). These therapies are approved for emergency use in the United States for treating mild-to-moderate COVID-19.

Regeneron’s therapy showed 72% protection against symptomatic infection in the first week, and 93% after that.

GSK-Vir’s showed a 79% reduction in the risk of hospitalisation or death due to any cause, while Eli Lilly’s therapy showed a 70% reduction in viral load at day seven compared to a placebo.

Merck & Co Inc (MRK.N), in turn, is emphasising the convenience of use of its anti-COVID-19 tablet, which cut the risk of having to got to hospital or of dying by 50% in a trial of early-stage patients who had at least one risk factor.

Merck, collaborating with Ridgeback Biotherapeutics, on Monday applied for U.S. emergency clearance for the oral drug.

AstraZeneca, whose COVID-19 vaccine has been widely used across the globe, asked U.S. regulators last week to grant emergency use authorisation for AZD7442 as a preventative shot.

As such, it is designed to protect people who do not have a strong enough immune response to vaccines, primarily those who have received organ transplants or who are in cancer care.

If full market clearance is obtained after any emergency approval the market could widen, for instance, to include crew and passengers of a cruise ship, said Pangalos.

“You can say the same for people who don’t want to be vaccinated but want an antibody,” he added.

AstraZeneca said it is submitting the new treatment data on AZD7442 to global health regulators.

The trial took place across 13 countries and involved more than 900 adult participants, 90% of whom suffered from conditions that made the particularly vulnerable to COVID-19, such as cancer and diabetes. One half receiving AZD7442 and the rest a placebo.

Full trial results will be submitted for publication in a peer-reviewed journal, AstraZeneca said.

AZD7442 contains laboratory-made antibodies designed to linger in the body for months to contain the virus in case of an infection. A vaccine, in contrast, relies on an intact immune system to develop targeted antibodies and infection-fighting cells.

While Monday’s results cover the use of AZD7442 in non-hospitalised patients, a separate trial is also studying its use as a treatment for hospitalised COVID-19 patients.


أعلنت شركة الأدوية البريطانية العملاقة “أسترازينيكا”، عن نجاح دواء جديد ضد فيروس كورونا كوفيد -19

وقالت الشركة – في بيان – إن دوائها المصنوع من مزيج اثنين من الأجسام المضادة، حقق “انخفاضا ذا دلالة إحصائية في حالات الإصابة بكوفيد-19 الحاد أو الوفاة” لدى المرضى الذين لم يدخلوا المستشفى ومن يعانون من أعراض بين خفيفة إلى متوسطة.

ويخضع العلاج، المعروف باسم AZD7442، للمرحلة الثالثة أو التجارب السريرية النهائية لتقييم سلامته وفعاليته.

وكشفت “أسترازينيكا” أن الدواء قلل من خطر الإصابة بـ”كوفيد-19″ الشديد أو الوفاة بنسبة 50% في المرضى الذين ظهرت عليهم الأعراض لمدة سبعة أيام أو أقل، بما يحقق الهدف الرئيسي من التجربة.

وأوضح هيو مونتغمري، المحقق الرئيسي في التجربة: “مع استمرار حالات العدوى الخطيرة بكوفيد-19 في جميع أنحاء العالم، هناك حاجة كبيرة إلى علاجات جديدة مثل AZD7442 التي يمكن استخدامها لحماية السكان المعرضين للخطر … ويمكن أن تساعد أيضا في منع التقدم إلى مرض خطير”.

وتابع: “تظهر هذه النتائج الإيجابية أن جرعة مريحة في العضل من AZD7442 يمكن أن تلعب دورا مهما في المساعدة في مكافحة هذا الوباء المدمر”.

وقالت مين بانغالوس، نائب الرئيس التنفيذي للبحث والتطوير في مجال المستحضرات الصيدلانية الحيوية في “أسترازينيكا”: “يمكن أن يؤدي التدخل المبكر بأجسامنا المضادة إلى انخفاض كبير في تطور المرض الشديد، مع استمرار الحماية لأكثر من ستة أشهر”.

وضمت التجربة 903 مشاركين مع 90% منهم من الأشخاص المعرضين لخطر الإصابة بـ”كوفيد-19″ الشديد.

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