A Comparative Study of Acellular Nerve Xenografts and Allografts in Repairing Rat Facial Nerve Defects
6330 MOLECULAR MEDICINE REPORTS 12: 6330-6336, 2015 A comparative study of acellular nerve xenografts and allografts in repairing rat facial nerve defects HAITAO HUANG1,2*, HONGXI XIAO3*, HUAWEI LIU1, YU NIU4, RONGZENG YAN1 and MIN HU1 1Department of Stomatology, Chinese PLA General Hospital, Beijing 100853; 2Department of Stomatology, The 1st Affiliated Hospital of Dalian Medical University, Dalian, Liaoning 116011; 3Department of Stomatology, The 309th Hospital of Chinese PLA, Beijing 100083; 4Department of Maxillofacial Surgery, The Second Hospital of Liaohe Oil Field, Panjin, Liaoning 124010, P.R. China Received October 1, 2014; Accepted June 26, 2015 DOI: 10.3892/mmr.2015.4123 Abstract. Acellular nerves are composed of a basal lamina gap is usually too large to allow primary end-to-end nerve tube, which retains sufficient bioactivity to promote axon coaptation in the absence of tension. Under these conditions, regeneration, thereby repairing peripheral nerve gaps. reconstruction of the peripheral nerve gap with grafts is neces- However, the clinical application of acellular allografts has sary, in order to avoid the complete loss of motor function and been restricted due to its limited availability. To investigate sensation of the affected area. For the past 100 years, recon- whether xenografts, a substitute to allograft acellular nerves in struction of the peripheral nerve gap has been achieved with abundant supply, could efficiently promote nerve regeneration, autografts, as these offered the highest chance of functional rabbit and rat acellular nerve grafts were used to reconstruct recovery (1). However, limited amounts of donor nerve, as 1 cm defects in Wistar rat facial nerves. Autologous peroneal well as deficitsin the donor area following nerve graft harvest nerve grafts served as a positive control group.
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