Gana Adyaksa and Heri Suroto (2021) Apoptosis of proximal stump postganglionic brachial plexus injury, before and after six months post-trauma. Annals of Medicine and Surgery, 63 (102156). pp. 1-5. ISSN 2049-0801

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Abstract

Background The success of the micro-surgery procedure for the treatment of postganglionic brachial plexus injury was influenced by several factors, including the surgical timing and also the viability of the proximal stump. This study evaluates the evidence of apoptosis in the brachial plexus proximal stump and its correlation with the surgical timing. Methods Proximal stump biopsy of postganglionic brachial plexus injury patients were obtained during nerve procedure surgery. The samples were grouped based on the surgical timing, before six months post-trauma (early group) and after six months post-trauma (late group). The apoptosis of motorneurons was evaluated by immunohistochemistry expression of Caspase-3, TNF-α, Caspase-8, and Caspase-9. Results Immunohistochemistry findings showed higher expression of Caspase-3 in the late group compared to the early group, as well as the expression of Caspase-8 and Caspase-9 (p < 0,05), and with a positive correlation between Caspase-8 and Caspase-9 to Caspase-3. Meanwhile, TNF-α expression was higher in the early group than the late group (p < 0,05) and with no correlation between TNF-α to Caspase-3. Conclusion Apoptosis of proximal stump motorneuron plexus brachialis on more than six months post-trauma is higher than on less than six months post-trauma.

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