Department of Biochemistry, University of KwaZulu-Natal, Durban, South Africa.
Department of Pharmacology, University of the Free State, Bloemfontein, South Africa.
Drug Chem Toxicol. 2022 Mar;45(2):481-490. doi: 10.1080/01480545.2020.1716783. Epub 2020 Jan 29.
is a traditional leafy vegetables (TLV) eaten in parts of Africa for the management of symptoms of diabetes mellitus. This study was done to investigate the anti-diabetic activity of the aqueous extract of aerial parts (CRAQ). Type 2 diabetes (T2D) was induced in male Sprague Dawley (SD) rats by feeding them with a 10% fructose solution for two weeks followed by single dose (40 mg/kg body weight) intraperitoneal injection of streptozotocin. After confirmation of T2D, animals were treated with a low and a high dose (150 and 300 mg/kg body weight) of extract for five weeks. Parameters used as markers of hyperglycemia were analyzed in the samples collected from rats. Hematoxylin-eosin staining was used in analyzing the morphological changes of the pancreas. Treatment with high dose of the extract significantly ( < 0.05) lowered blood glucose level, increased oral glucose tolerance level and pancreatic β-cell function, while restoring the morphology of the pancreatic tissue damage. The high dose also increased insulin secretion, liver glycogen, antioxidant enzyme activities in serum and organs, and prevented liver and renal damages compared to the untreated diabetic animals. Data from this study suggest that possesses impressive anti-diabetic activity and could be useful in ameliorating some complications associated with T2D therefore this plant can be exploited in finding new alternative therapies for the treatment of T2D.
是一种在非洲部分地区被食用的传统绿叶蔬菜,用于治疗糖尿病症状。本研究旨在探究地上部分水提物(CRAQ)的抗糖尿病活性。雄性 Sprague Dawley(SD)大鼠通过两周的 10%果糖溶液喂养和单次腹腔注射链脲佐菌素(40mg/kg 体重)来诱导 2 型糖尿病(T2D)。在确认 T2D 后,动物用低剂量和高剂量(150 和 300mg/kg 体重)提取物治疗五周。从大鼠采集的样本中分析用于标记高血糖的参数。用苏木精-伊红染色分析胰腺的形态变化。高剂量提取物治疗可显著( < 0.05)降低血糖水平,提高口服葡萄糖耐量水平和胰腺β细胞功能,同时恢复胰腺组织损伤的形态。与未经治疗的糖尿病动物相比,高剂量还可增加胰岛素分泌、肝糖原、血清和器官中的抗氧化酶活性,并预防肝和肾损伤。本研究数据表明,具有显著的抗糖尿病活性,可用于改善与 T2D 相关的一些并发症,因此该植物可用于寻找治疗 T2D 的新替代疗法。