1.A clinically relevant combination treatment with doxorubicin and cyclophosphamide does not induce hepatotoxicity in C57BL/6J mice
Satyanarayana R Pondugula ; Julia M Salamat ; Kodye L Abbott ; Patrick C Flannery ; Mohammed Majrashi ; Mohammed Almaghrabi ; Manoj Govindarajulu ; Sindhu Ramesh ; Maninder Sandey ; Suneel K Onteru ; Chen-Che J Huang ; Yoshimi Iwaki ; Kristina Gill ; Natasha Narayanan ; Edwin McElroy ; Darshini Desai ; Rishi Nadar ; Timothy Moore ; Muralikrishnan Dhanasekaran
Liver Research 2021;5(4):239-242
Background and aims
Chronic exposure to chemotherapeutics can lead to severe adverse events including hepatotoxicity. A combination chemotherapy regimen of doxorubicin (DOX) and cyclophosphamide (CPS) is employed in treatment of several cancers such as leukemia, lymphoma, and breast cancer. It is not well understood whether a combination therapy with DOX and CPS can induce hepatotoxicity. We therefore sought to determine whether co-administration of DOX and CPS at their clinically relevant doses and frequency results in hepatotoxicity.
Methods
Male C57BL/6J mice received one intraperitoneal injection of saline or DOX-2 mg/kg and CPS-50 mg/kg once a week for 4 weeks. After the treatment period, liver histology and various serum biomarkers of hepatotoxicity were assessed.
Results
Co-treatment with DOX and CPS did not alter the serum levels of alanine aminotransferase (ALT), alkaline phosphatase (ALP), bilirubin, albumin, globulin, or total protein. Similarly, co-administration of DOX and CPS did not result in a noticeable change in liver histology. However, it was notable that the concomitant treatment with DOX and CPS resulted in a significant increase in serum levels of aspartate aminotransferase (AST). Elevated serum AST levels were also associated with increased serum creatinine kinase (CK) levels, suggesting that the elevated serum AST levels are likely due to muscle injury following the co-administration of DOX and CPS.
Conclusions
Taken together, our results, for the first time, suggest that co-administration of DOX and CPS, at their clinically relevant doses and frequency does not induce a significant hepatotoxicity in the mice.
2.Antibacterial and anticancer potential of Brassica oleracea var acephala using biosynthesised copper nanoparticles
C Shanmuga Sundaram ; J Sivakumar ; S Suresh Kumar ; PLN Ramesh ; Thant Zin ; US Mahadeva Rao
The Medical Journal of Malaysia 2020;75(6):677-684
ary phytochemical screening. The resultsshowed that the ethanolic crude extract of the leaf containhigh phytochemical activity hence B.oleraceavaracephalais rich in flavonoids, phenolic compounds, carbohydratesand phytosterols. Materials and methods: The ethanolic extract was used tosynthesise copper nanoparticles. The copper nanoparticleswere successfully synthesised from copper sulphatesolution which was identified by the colour change fromdark green colour of the extract. Thus the B.oleracea varacephala is a good source to synthesis coppernanoparticles. The synthesised copper nanoparticles werecharacterised using Scanning Electron Microscope (SEM)analysis. The SEM image displayed the high-densitynanoparticles synthesised by leaf extracts and that thenanoparticles were crystals in shape. Results: The copper nanoparticles (CNP) bind to the leafextract. B.oleraceavaracephalaalso has shown theantimicrobial and antioxidant activity. A comparative studywas done between ethanolic its crude extract andnanoparticles. Both extracts exhibited zone of inhibition andbetter antioxidant potential but the CuNPs shows majorzone of inhibition and showed more antioxidant activity.Anticancer activity of B.oleraceavaracephalaagainstCervical HeLa cell line was confirmed using ethanolic crudeextract and CNP. The results showed that HeLa cellsproliferation was inhibited with increasing concentration ofethanolic crude extract and copper nanoparticles. From theresults, it was seen that percentage viability of the cancercells decreased with increased concentration of the sampleswhereas cytotoxicity against HeLa cell lines increased withthe increased concentration of the samples. Conclusion: Thus B.oleraceavaracephalapossessesanticancer activity against HeLa cell lines.
4.An audit of upper gastrointestinal bleeding at Seremban Hospital.
Lim TM ; Lu PY ; Meheshinder S ; Selvindoss P ; Balasingh D ; Ramesh J ; Qureshi A
The Medical Journal of Malaysia 2003;58(4):522-525
We retrospectively analyzed all patients presenting with upper gastrointestinal bleeding to Seremban Hospital over a one-year period. A quarter of the oesophagogastro-duodenoscopies (OGD) performed were performed as emergency for upper gastrointestinal tract bleeding. Gastric ulcers and duodenal ulcers were the two most common findings. Our results suggest that there is a male preponderance of 2:1, the Chinese were more likely to be affected and the elderly (> 60 years) were at highest risk.
Endoscopy, Gastrointestinal
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Gastrointestinal Hemorrhage/ethnology
;
Gastrointestinal Hemorrhage/*etiology
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Gastrointestinal Hemorrhage/therapy
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Malaysia
;
Retrospective Studies
;
Risk Factors
;
Sex Factors


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