Effects of aqueous seed extract of <i>Garcinia kola</i> on spray paint-induced histological changes in the lungs of Wistar rats

Abstract

The most common cause of lung diseases among people with spray paint-related occupations is hydrocarbon poisoning which has significant morbidity and mortality if left untreated. This study aimed to investigate the effects of aqueous seed extract of Garcinia kola on spray paint-induced interstitial pneumonitis in the adult Wistar rats. Thirty adult Wistar rats weighing between 240 g and 270 g were divided into five groups of six rats each. Animals in group A were placed on feed and water only. Animals in group B were exposed to 100 ml of spray paintfumes via inhalation. Animals in group C received 500mg/kg body weight per day of Garcinia kola. Animals in group D were exposed to 100 ml of spray paint fumes via inhalation and received 250mg/kg body weight per day of Garcinia kola. Animals in group E were exposed to 100 ml of spray paint fumes via inhalation and received 500mg/kg body weight per day of Garcinia kola. The extract was administered for 30 consecutive days via an orogastric tube. Groups A, C, D and E revealed normal histoarchitecture of the lung; normal alveoli and normal interstitial space. There were observable histological variations in the lung tissues of Group B rats which include severe alveolar dilation, interstitial haemorrhage, interstitial infiltrates of inflammatory cells, severe vascular ulceration and congestion (evidence of interstitial pneumonitis). It is concluded that Garcinia kolahasan ameliorative effect on spray paint-induced histological changes in the lungs of Wistar rats.