Notice: Function _load_textdomain_just_in_time was called incorrectly. Translation loading for the chaty 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 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

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

Deprecated: Return type of Recursive_ArrayAccess::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 76

Deprecated: Return type of Recursive_ArrayAccess::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 89

Deprecated: Return type of Recursive_ArrayAccess::offsetSet($offset, $data) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 103

Deprecated: Return type of Recursive_ArrayAccess::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 125

Deprecated: Return type of Recursive_ArrayAccess::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 143

Deprecated: Return type of Recursive_ArrayAccess::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 165

Deprecated: Return type of Recursive_ArrayAccess::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 154

Deprecated: Return type of Recursive_ArrayAccess::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 187

Deprecated: Return type of Recursive_ArrayAccess::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 176

Deprecated: Return type of Recursive_ArrayAccess::count() should either be compatible with Countable::count(): int, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-recursive-arrayaccess.php on line 202

Warning: Cannot modify header information - headers already sent by (output started at /home1/express/public_html/wp-includes/functions.php:6131) in /home1/express/public_html/wp-content/plugins/youtube-showcase/assets/ext/emd-session/includes/class-emd-wp-session.php on line 134

Deprecated: Creation of dynamic property ReduxFramework::$core_instance is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-args.php on line 202

Deprecated: Creation of dynamic property ReduxFramework::$core_thread is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-args.php on line 203

Deprecated: Creation of dynamic property NewfoldLabs\WP\Module\ComingSoon::$container is deprecated in /home1/express/public_html/wp-content/plugins/wp-plugin-hostgator/vendor/newfold-labs/wp-module-coming-soon/includes/coming-soon.php on line 17

Deprecated: Creation of dynamic property NewfoldLabs\WP\Module\ComingSoon::$args is deprecated in /home1/express/public_html/wp-content/plugins/wp-plugin-hostgator/vendor/newfold-labs/wp-module-coming-soon/includes/coming-soon.php on line 40

Deprecated: Creation of dynamic property Redux_Select::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Select::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Slides::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Slides::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Slides::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Slides::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Textarea::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Textarea::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Text::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Text::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Password::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Password::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Import_Export::$field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 160

Deprecated: Creation of dynamic property Redux_Import_Export::$select2_config is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/classes/class-redux-field.php on line 163

Deprecated: Creation of dynamic property Redux_Import_Export::$is_field is deprecated in /home1/express/public_html/wp-content/plugins/woo-iqonic-api/redux-framework/redux-core/inc/extensions/import_export/import_export/class-redux-import-export.php on line 35
دراسة جديدة تكشف "سر" التحور السريع في فيروس كورونا - Algerian Express

دراسة جديدة تكشف “سر” التحور السريع في فيروس كورونا


Deprecated: preg_split(): Passing null to parameter #3 ($limit) of type int is deprecated in /home1/express/public_html/wp-content/themes/jannah/framework/functions/post-functions.php on line 761

ألجيريان إكسبرس: كشفت دراسة أميركية حديثة عن السبب وراء التحور السريع لفيروس كورونا في الآونة الأخيرة، لا سيما في ظل تصاعد قدرة الفيروس على الفتك بالمصابين في بعض الحالات بشكل أكبر.

وأكدت الدراسة التي أجراها باحثون أميركيون من مستشفى بوسطن للأطفال في الولايات المتحدة، أن البروتينات الشوكية، التي تعرف باسم “السنبلة”، تكمن وراء المتغيرات السريعة التي تحدث للفيروس.

وأشارت الدراسة إلى أن بروتينات السنبلة التي تتجمع على الجزء الخارجي من فيرس كورونا تعد الأكثر ثباتا، وتعود إليها أسباب المتغيرات الجديدة التي تطرأ على الفيروس، وتؤدي بالتالي إلى انتشاره على نحو أسرع من السلالة الأصلية.

ونقلت صحيفة “جيروزاليم بوست” الإسرائيلية عن البروفيسور بينج تشين، أستاذ طب الأطفال في مستشفى بوسطن للأطفال، قوله إن الدراسة فحصت التغيرات التي حدثت في البروتينات الشوكية التي تنتمي إلى إحدى الطفرات الجديدة التي حدثت للفيروس في كل من البرازيل وجنوب إفريقيا والمملكة المتحدة.

ووفقًا للنتائج التي خلصت إليها الدراسة، ونُشرت في المجلة الأكاديمية “ساينس”، فإن بروتين السلالة الأصلية للفيروس ينهار أحيانًا قبل أن يرتبط بشكل صحيح بمستقبلات المضيف البشري، مما يعني أنه لن يندمج بشكل صحيح مع الخلايا.

ولكن يبدو أن هذه العقبة قد تم تصحيحها في الطفرات اللاحقة للفيروس، وأصبحت البروتينات الشوكية على ظهر الفيروس لا تستجيب بسهولة، مثلما كان يحدث في الفيروس الأصلي.

ومع ظهور أخبار المتغيرات لأول مرة على فيروس كورونا، أعرب كثير من الخبراء في المجال الصحي، عن قلقهم من أن اللقاحات لن تكون فعالة مع الفيروس المتحور، إلا أن البروفيسور تشين قال إن هذا لا ينبغي أن يكون مصدر قلق.

ALGERIAN EXPRESS

اظهر المزيد

اترك تعليقاً

لن يتم نشر عنوان بريدك الإلكتروني. الحقول الإلزامية مشار إليها بـ *

زر الذهاب إلى الأعلى
إغلاق
إغلاق