Kah-Hui Wong1,2, Gowri Kanagasabapathy3, Murali Naidu4,3, Pamela David4,3, Vikineswary Sabaratnam3,5. 1. Department of Anatomy, Faculty of Medicine, University of Malaya, Kuala Lumpur, 50603, Malaysia. wkahhui@um.edu.my. 2. Mushroom Research Centre, University of Malaya, Kuala Lumpur, 50603, Malaysia. wkahhui@um.edu.my. 3. Mushroom Research Centre, University of Malaya, Kuala Lumpur, 50603, Malaysia. 4. Department of Anatomy, Faculty of Medicine, University of Malaya, Kuala Lumpur, 50603, Malaysia. 5. Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, 50603, Malaysia.
Abstract
OBJECTIVE: To study the ability of aqueous extract of Hericium erinaceus mushroom in the treatment of nerve injury following peroneal nerve crush in Sprague-Dawley rats. METHODS: Aqueous extract of Hericium erinaceus was given by daily oral administration following peroneal nerve crush injury in Sprague-Dawley rats. The expression of protein kinase B (Akt) and mitogen-activated protein kinase (MAPK) signaling pathways; and c-Jun and c-Fos genes were studied in dorsal root ganglia (DRG) whereas the activity of protein synthesis was assessed in peroneal nerves by immunohistochemical method. RESULTS: Peripheral nerve injury leads to changes at the axonal site of injury and remotely located DRG containing cell bodies of sensory afferent neurons. Immunofluorescence studies showed that DRG neurons ipsilateral to the crush injury in rats of treated groups expressed higher immunoreactivities for Akt, MAPK, c-Jun and c-Fos as compared with negative control group (P <0.05). The intensity of nuclear ribonucleoprotein in the distal segments of crushed nerves of treated groups was significantly higher than in the negative control group (P <0.05). CONCLUSION: H. erinaceus is capable of promoting peripheral nerve regeneration after injury. Potential signaling pathways include Akt, MAPK, c-Jun, and c-Fos, and protein synthesis have been shown to be involved in its action.
OBJECTIVE: To study the ability of aqueous extract of Hericium erinaceusmushroom in the treatment of nerve injury following peroneal nerve crush in Sprague-Dawley rats. METHODS: Aqueous extract of Hericium erinaceus was given by daily oral administration following peroneal nerve crush injury in Sprague-Dawley rats. The expression of protein kinase B (Akt) and mitogen-activated protein kinase (MAPK) signaling pathways; and c-Jun and c-Fos genes were studied in dorsal root ganglia (DRG) whereas the activity of protein synthesis was assessed in peroneal nerves by immunohistochemical method. RESULTS: Peripheral nerve injury leads to changes at the axonal site of injury and remotely located DRG containing cell bodies of sensory afferent neurons. Immunofluorescence studies showed that DRG neurons ipsilateral to the crush injury in rats of treated groups expressed higher immunoreactivities for Akt, MAPK, c-Jun and c-Fos as compared with negative control group (P <0.05). The intensity of nuclear ribonucleoprotein in the distal segments of crushed nerves of treated groups was significantly higher than in the negative control group (P <0.05). CONCLUSION:H. erinaceus is capable of promoting peripheral nerve regeneration after injury. Potential signaling pathways include Akt, MAPK, c-Jun, and c-Fos, and protein synthesis have been shown to be involved in its action.
Authors: Poonam Verma; Sabrina Chierzi; Amanda M Codd; Douglas S Campbell; Ronald L Meyer; Christine E Holt; James W Fawcett Journal: J Neurosci Date: 2005-01-12 Impact factor: 6.167
Authors: Heitor G Araújo-Filho; Lucindo J Quintans-Júnior; André S Barreto; Jackson R G S Almeida; Rosana S S Barreto; Jullyana S S Quintans Journal: Neurochem Res Date: 2015-12-08 Impact factor: 3.996