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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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ظاهرة نادرة للغاية تشهد "استنشاق" الرضع للخلايا السرطانية أثناء الولادة الطبيعية! - Algerian Express

ظاهرة نادرة للغاية تشهد “استنشاق” الرضع للخلايا السرطانية أثناء الولادة الطبيعية!


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يقدر باحثون أن انتقال سرطان الأم إلى الأبناء ربما يحدث مرتين فقط في كل مليون ولادة لدى الأمهات المصابات بالسرطان، حيث تتسرب الخلايا المريضة إلى الرضيع عبر المشيمة.

ويقول العلماء إن هذه ليست الطريقة الوحيدة التي قد تصيب بها الأم المصابة بالسرطان طفلها دون قصد.

وفي دراسة حالة جديدة نشرها باحثون في اليابان، أفاد الأطباء بما يبدو أنه خطوة طبية أولى: الانتقال المهبلي للخلايا السرطانية من الأمهات المصابات بسرطان عنق الرحم إلى الرضع وقت ولادتهم.

وأوضح الباحثون بقيادة أيومو أراكاوا، أخصائي أورام الأطفال بمستشفى المركز الوطني للسرطان في طوكيو، في ورقتهم البحثية: “انتقال الورم من الأم إلى الرضيع في قناة الولادة أثناء الولادة المهبلية، ممكن أيضا من الناحية النظرية. وإذا كانت الأم مصابة بسرطان عنق الرحم، يمكن أن يتعرض الرضيع للخلايا السرطانية في السوائل في قناة الولادة، ويمكن أن ينفث الخلايا السرطانية إلى الرئتين”.

ويبدو أن هذا الناقل الغامض وغير المعروف سابقا – استنشاق السرطان في أنفاسك الأولى، ظاهريا – مسؤول عن حالتين غير مرتبطتين بسرطان الرئة لدى الأطفال، شًخّصتا في زوج من المرضى الذكور: الأول يبلغ من العمر 23 شهرا والآخر 6 أعوام.

وفي معظم الحالات التي تنطوي على انتقال السرطان من الأم إلى الجنين، يميل توصيل الخلايا السرطانية من المشيمة إلى انتشار السرطانات في الدماغ والعظام والكبد والأنسجة الأخرى، بما في ذلك الرئتين.

وكتب المعدون: “لوحظ وجود أورام في الرئتين فقط وتم تحديد موقعها على طول القصبات الهوائية. من المحتمل أن خلايا الورم الأمومية كانت موجودة في السائل الأمنيوسي أو الإفرازات أو الدم من عنق الرحم، وتم استنشاقها من قبل الرضع أثناء الولادة المهبلية”.

وفي حين أن فرص هذا المسار للعدوى السرطانية تبدو ضئيلة بشكل لا يصدق لأي عائلة، يؤكد الباحثون أن الوقاية عن طريق التطعيم ضد فيروس الورم الحليمي البشري من شأنها أن تمنع حدوث طريقة الانتقال هذه – وهي رسالة مهمة بشكل خاص في سياق اليابان، التي لديها تاريخ مضطرب مع لقاحات فيروس الورم الحليمي البشري.

وعلاوة على ذلك، يقترح الباحثون أن تكون العملية القيصرية هي الشكل الموصى به للولادة بالنسبة للأمهات اللاتي لديهن تاريخ من سرطان عنق الرحم.

وبالإضافة إلى هذه النتائج، فإن هذه الحالات المروعة لظاهرة طبية نادرة للغاية بمثابة مثال رائع على مقدار ما لم نتعلمه بعد عن السرطان، والطرق الخبيثة التي يبدو أن المرض ينتشر من خلالها.

وقالت ديبي ساسلو، كبيرة مديري قسم السرطان المرتبط بفيروس الورم الحليمي البشري والنساء في جمعية السرطان الأمريكية، والتي لم تشارك في الدراسة، لـ Health Day: “وجدت الأمر رائعا، شخصيا. لم أكن أعرف أن هذا ممكن”.

ونشرت النتائج في مجلة New England الطبية.

المصدر: ساينس ألرت

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