Abstract
Background: Anemia is a global hematological disorder. Earthworms have antimicrobial,
antispasmodic, antihypertensive, antiallergic, anti-inflammatory, and anticoagulant properties.
Objective: Our study aimed to investigate the anti-anemic activity of the earthworm Allolobophora
caliginosa extract (AcE) on phenylhydrazine-induced hemolytic anemia in rats.
Methods: Eighteen adult male albino rats were randomly divided into 3 groups (n = 6 per group)
as follows: Control, PHZ, and AcE-treated groups. Induction of anemia was done by intraperitoneal
administration of phenylhydrazine (40 mg/kg) for 2 consecutive days. Treatment of AcE by
intraperitoneal injection (45 mg/kg) for six successive days.
Results: Treatment of anemic rats with AcE extract caused significant increases in red blood cells
(RBCs), hemoglobin (HB), hematocrit (HCT), total protein (TP), albumin, glutathione reduced
(GSH), catalase (CAT), and glutathione-S-transferase (GST), as compared to the PHZ group.
While, mean corpuscular haemoglobin (MCH), mean corpuscular hemoglobin concentration
(MCHC), alanine aminotransferase (ALT), aspartate aminotransferase (AST), alkaline phosphatase
(ALP), malondialdehyde (MDA), and nitric oxide (NO) levels significantly decreased after
intraperitoneal administration of AcE, when compared to the PHZ group. Liver sections from the
AcE-treated group restored the normal micromorphological features of the liver. The expression of
caspase-3 was weak and/or there was no expression in the liver sections from AcE groups. AcE
caused a significant reduction in the incidence of DNA damage, which appeared as less DNA in the
tails.
Conclusion: The present research sheds light on the antianemic efficacy of AcE in rats. This
study reveals that AcE has antianemic activity, which can be linked to its iron and branched-chain
amino acid content, as well as antioxidant and anti-apoptotic properties.
Keywords:
Anemia, phenylhydrazine, earthworm, oxidative stress, Allolobophora caliginosa, histopathology.
Graphical Abstract
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