Flowers of Clerodendrum volubile modulates redox homeostasis and suppresses DNA fragmentation in Fe2+ − induced oxidative hepatic and pancreatic injuries; and inhibits carbohydrate catabolic enzymes linked to type 2 diabetes

  • Ochuko L. Erukainure
  • Olajumoke A. Oyebode
  • Veronica F. Salau
  • Neil A. Koorbanally
  • Md. Shahidul IslamEmail author
Research article



Medicinal plants have long been recognized for their roles in the treatment and management of diabetes and its complications. The antioxidative and antidiabetic properties of Clerodendrum volubile flowers were investigated in vitro and ex vivo.


The flowers were sequentially extracted with solvents of increasing polarity (n-hexane, ethyl acetate, ethanol and water). The concentrated extracts were subjected to in vitro antioxidant assays using the 2,2′-diphenyl-1-picrylhydrazyl (DPPH) scavenging and Ferric reducing antioxidant power (FRAP) protocols. Their inhibitory activities were investigated on α-glucosidase, pancreatic lipases, pancreatic ATPase and glucose-6-phosphatase activities. Their anti-oxidative and anti-apoptotic effects on Fe2+-induced oxidative injuries were also investigated in pancreatic and hepatic tissues ex vivo.


The extracts showed potent free radical scavenging activity and significantly (p < 0.05) inhibited all studied enzymes. The GSH level was significantly (p < 0.05) elevated in both tissues with concomitant increase in superoxide dismutase (SOD) and catalase activities as well as reduced levels of malondialdehyde (MDA). The extracts significantly (p < 0.05) suppressed DNA fragmentation in hepatic tissue. These activities were dose-dependent. The ethanol extract showed the best activity and can be attributed to the synergetic effect of its chemical constituents identified via gas chromatography-mass spectroscopy (GC-MS).


These results suggest the antioxidative, antidiabetic and anti-obesogenic potentials of C. volubile flowers.


Anti-hyperglycemia C. volubile Oxidative stress Type 2 diabetes 



This study was funded by a competitive research grant from the Research Office, University of KwaZulu-Natal (UKZN), Durban, South Africa. It was supported by an incentive grant for rated researchers and grant  support for women and young researchers from the National Research Foundation (NRF), Pretoria, South Africa.

Compliance with ethical standards

Conflict of interest

On behalf of all authors, the corresponding author states that there is no conflict of interest.


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© Springer Nature Switzerland AG 2019

Authors and Affiliations

  1. 1.Department of Biochemistry, School of Life SciencesUniversity of KwaZulu-Natal, (Westville Campus)DurbanSouth Africa
  2. 2.Nutrition and Toxicology DivisionFederal Institute of Industrial ResearchLagosNigeria
  3. 3.Department of Pharmacology, School of Clinical Medicine, Faculty of Health SciencesUniversity of the Free StateBloemfonteinSouth Africa
  4. 4.School of Chemistry and PhysicsUniversity of KwaZulu-Natal, (Westville Campus)DurbanSouth Africa

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