July 21, 2024
Chicago 12, Melborne City, USA

8.Reading Multiple Choice multiple Answer(Wound Healing)

A protein named Agrin has been discovered to promote wound healing and repair, when it is triggered aftersSkin tissue is injured. These findings could pave the way for the development of Agrin protein therapy to accelerate skin tissue healing for chronic wounds from diabetes or burns. The research, led by A*STAR’s Institue of Molecular and Cell Biology (IMCB), was published in the journal Nature Communications on 3 November 2021.

One in 20 Singaporeans is afflicted with chronic wound conditions. Complications in the healing of chronic wounds are prevalent in patients suffering from diabetes or burn injuries, and are a leading cause of amputation and decreased emotional well-being for patients. During injury, a major chunk of extracellular matrix, which helps to rebuild tissue, is lost, therefore delaying wound healing. As such, the timely replenishment of key ECM proteins may accelerate wound healing.

In this study, researchers have shown that timely induction or exogenous supplementation of Agrin, an ECM protein, may promote accelerated healing of injured skin tissues. Using both human and pre-clinical models, they found that physical injury to the skin tissue enhanced the expression of Agrin, which preserves the mechanical architecture of injured skin layers by repairing the skin tissue.

Which of the following statements is incorrect?

A) Agrin can heal the wound instantly.

B) Loss of ECM can delay wound healing.

C) The expression of Agrin was enhanced when skin tissue was physically damaged.

D) Chronic wound healing complications were the main reason for the decline of patients’ emotional health.

E) One in 20 Singaporeans suffers from diabetes or burns.

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