ABSTRACT
Sinomenine (SN) is a well-documented unique plant alkaloid extracted from many herbal medicines. The present study evaluates the wound healing potentials of SN on dorsal neck injury in rats. A uniform cut was created on Sprague Dawley rats (24) which were arbitrarily aligned into 4 groups receiving two daily topical treatments for 14 days as follows: A, rats had gum acacia; B, rats addressed with intrasite gel; C and D, rats had 30 and 60 mg/ml of SN, respectively. The acute toxicity trial revealed the absence of any toxic signs in rats after two weeks of ingestion of 30 and 300 mg/kg of SN. SN-treated rats showed smaller wound areas and higher wound closure percentages compared to vehicle rats after 5, 10, and 15 days of skin excision. Histological evaluation of recovered wound tissues showed increased collagen deposition, fibroblast content, and decreased inflammatory cells in granulated tissues in SN-addressed rats, which were statistically different from that of gum acacia-treated rats. SN treatment caused positive augmentation of Transforming Growth Factor Beta 1 (angiogenetic factor) in wound tissues, denoting a higher conversion rate of fibroblast into myofibroblast (angiogenesis) that results in faster wound healing action. Increased antioxidant enzymes (SOD and CAT), as well as decreased MDA contents in recovered wound tissues of SN-treated rats, suggest the antioxidant potentials of SN that aid in faster wound recovery. Wound tissue homogenates showed higher hydroxyproline amino acid (collagen content) values in SN-treated rats than in vehicle rats. SN treatment suppressed the production of pro-inflammatory cytokines and increased anti-inflammatory cytokines in the serum of wounded rats. The outcomes present SN as a viable pharmaceutical agent for wound healing evidenced by its positive modulation of the antioxidant, immunohistochemically proteins, hydroxyproline, and anti-inflammatory cytokines.
ABSTRACT
In remote villages of Kurdistan-Iraq, such as in those on Safeen Mountain, decoctions, potions, and oils from the local herbal tradition have provided the only medicinal remedies for centuries, up to today. A variety of diseases are treated with different plant preparations, ranging from simple rheumatism to diarrhea, skin diseases, and highly complicated kidney and heart problems. This survey describes, for the first time, the mostly used medicinal plants, resulting from several interviews with local herbal healers. The bioactivity of some isolated compounds is, indeed, strictly related to traditional uses of plants in Safeen Mountain Province. We also report the preliminary results of our ongoing research project on the constituents of the still uninvestigated plant Pterocephalus nestorianus Nab., which is traditionally used against inflammation and oral diseases. Luteolin-7-0-glucoside, 3,5-di-O-caffeoylquinic acid and loganic acid were isolated.
