Sains Malaysiana 51(11)(2022):
            3755-3764
              
          
          
             
          
          Effectuation of Pleurotus pulmonarius on Hypercholesterolemic Wistar-Kyoto Rats: Analysis on Liver and
            Sera
            
          
          (Kesan Pleurotus pulmonarius terhadap Tikus Wistar-Kyoto Hiperkolesterolemik: Analisis ke atas Hati dan Sera)
            
          
          
             
          
          NOOR
            FAZILA MOHD YAHAYA, NORHANIZA AMINUDIN* & NOORLIDAH ABDULLAH
  
          
          
             
          
          Mushroom Research Centre,
            Institute of Biological Sciences, Faculty of Science, Universiti Malaya, 50603 Kuala Lumpur, Federal Territory, Malaysia
  
          
          
             
          
          Diserahkan: 30 September 2021/Diterima: 20 Jun 2022
            
          
          
             
          
          Abstract
            
          
          Hypercholesterolemia is one of the potential risks
            of cardiovascular heart disease (CHD). An early diagnosis and treatment
            attenuate the risk of CHD. Besides statin prescription for
            hypercholesterolemia, functional food has an added value to ameliorate the
            risk. This study was conducted to analyse the significant effect of grey oyster
            mushroom (Pleurotus pulmonarius)
            on hypercholesterolemia. Thirty-six Wistar-Kyoto rats
            were assigned into six groups, consisted of normal (N), hypercholesterolemia
            (H), two groups for prevention (P1 and P2), and two groups for treatment (T1
            and T2). For prevention purpose, P1 and P2 were concomitantly induced to be hypercholesterolemic and fed with either crude aqueous
            extract of P. pulmonarius (CA) or simvastatin for 45 days. Following 45 days of hypercholesterolemic-induction,
            T1 and T2 rats were then orally fed with either CA or simvastatin for another
            30 days. On day 45, groups N, H, P1, and P2 were sacrificed, whereas groups T1
            and T2 were sacrificed on day 75. Histopathology examination showed the
            conditions of liver tissues. Fat droplets were observed in hypercholesterolemic hepatic tissues and were also remained in the hepatic tissues of rats belonged
            to the treatment groups. The tissues’ viability was better in prevention groups
            suggesting the compound(s) present in CA might be able to protect them from
            further damage. Metabolomic analysis of the sera from
            P1 and T1 rats showed altered regulation of several metabolites such as
            pantothenic acid, N-carbamylglutamate, serotonin and
            ceramide against the control group.
  
          
          
             
          
          Keywords: Hepatic cells; histopathology;
            hypercholesterolemia; metabolomic
  
          
          
             
          
          Abstrak
            
          
          Hiperkolesterolemia adalah salah satu potensi
            risiko penyakit jantung kardiovaskular (CVD). Diagnosis dan rawatan awal
            mengurangkan risiko CVD. Selain statin untuk merawat hiperkolesterolemia,
            makanan berfungsi mempunyai nilai tambah untuk mengurangkan risiko. Kajian ini
            dilakukan untuk menganalisis pengaruh signifikan cendawan tiram kelabu (Pleurotus
              pulmonarius) terhadap hiperkolesterolemia. Tiga puluh enam tikus
            Wistar-Kyoto dibahagikan kepada enam kumpulan, yang terdiri daripada normal
            (N), hiperkolesterolemia (H), dua kumpulan untuk pencegahan (P1 dan P2) dan dua
            kumpulan untuk rawatan (T1 dan T2). Untuk tujuan pencegahan, P1 dan P2 diaruh
            menjadi hiperkolesterolemia dan pada masa yang sama diberi ekstrak
              akues mentah P. pulmonarius (CA) atau
                simvastatin selama 45 hari. Manakala tikus T1 dan T2 pula diberi makan secara
                oral dengan CA atau simvastatin selama 30 hari lagi selepas 45 hari diaruh menjadi hiperkolesterolemia. Pada hari ke-45, kumpulan N, H, P1 dan P2 dikorbankan manakala
                  kumpulan T1 dan T2 dikorbankan pada hari ke-75. Pemeriksaan histopatologi
                  menunjukkan keadaan tisu hati. Titisan lemak diperhatikan pada tisu hepatik
                  hiperkolesterolemik dan juga tetap berada di dalam tisu hati tikus tergolong
                  dalam kelompok perawatan. Kelangsungan tisu lebih baik pada kumpulan pencegahan
                  yang menunjukkan bahawa sebatian yang terdapat di CA mungkin dapat melindungi
                  mereka daripada kerosakan selanjutnya. Analisis metabolik sera daripada tikus
                  P1 dan T1 mendedahkan perubahan beberapa metabolit seperti asid pantotenat,
                    N-karbamilglutamat, serotonin dan ceramida apabila dibandingkan dengan kumpulan
                    kawalan.
  
          
             
          
          Kata kunci: Hiperkolesterolemia; histopatologi; metabolomik; sel hepatik
            
          
          
             
          
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          *Pengarang untuk surat-menyurat; email: hanizaaminudin@um.edu.my