1.Prevalence of Sarcocystis spp. in rodents in Peninsular Malaysia
Stephen Ambu ; Evelyn Yin Synn Yeoh ; Joon Wah Mak ; Srikumar Chakravarthi
International e-Journal of Science, Medicine and Education 2011;5(2):29-38
The aim of the study was to assess the prevalence of
Sarcocystis infection in wild and peri-urban rodents in
some states in Peninsular Malaysia. The thigh muscle
from these rodents were formalin preserved, sectioned
and stained with hematoxylin and eosin and examined
under light microscopy. Of the 146 muscle tissue
examined only 73 were positive for Sarcocystis infection.
Morphological identification showed the presence of
some new morphological types to be present. Different
species of Sarcocystis were seen in the sections but more
extensive studies are needed to identify them to species
level.
2.The effect of water extracts of Euphorbia hirta on cartilage degeneration in arthritic rats.
Kah Heng Lee ; Yu Sui Chen ; John Paul Judson ; Srikumar Chakravarthi ; Yen Mi Sim ; Hui Meng Er
The Malaysian journal of pathology 2008;30(2):95-102
The effect of water extracts of Euphorbia hirta on the histological features and expressions of matrix metalloproteinases (MMPs) and tissue inhibitors of matrix metalloproteinases (TIMPs) in the rat articular cartilage was investigated. Arthritis was induced in rats using Freund's Complete Adjuvant containing heat-killed M. tuberculosis, and treated with water extracts of E. hirta. Paraffin tissue sections of the arthritic joints were evaluated. The extent of cartilage degeneration was found to be greatest in rats treated with the highest dosage of E. hirta, followed by rats in the untreated group. Rats treated with the intermediary and low dosages of Euphorbia hirta showed improved histology. MMP-13 levels were found to be decreased with decreasing dosages of E. hirta. TIMP-1 levels were found to increase with decreasing dosages of E. hirta. MMP-3 levels fluctuated without any appreciable pattern. Low dosages of E. hirta seem to be beneficial in reducing cartilage degeneration in cases of arthritis.
Upper case ee
;
Rattus norvegicus
;
Euphorbia
;
Water
;
Degeneration, NOS
3. COVID-19-associated mucormycosis and treatments
Vetriselvan SUBRAMANIYAN ; Rusli Bin NORDIN ; Srikumar CHAKRAVARTHI ; Shivkanya FULORIA ; Neeraj Kumar FULORIA ; Hari Kumar DARNAL ; Dhanalekshmi Unnikrishnan MEENAKSHI ; Shah Alam KHAN ; Mahendran SEKAR ; Kathiresan V. SATHASIVAM ; Yuan Seng WU ; Usha KUMARI ; Kalvatala SUDHAKAR ; Rishabha MALVIYA ; Vipin Kumar SHARMA
Asian Pacific Journal of Tropical Medicine 2021;14(9):401-409
In the current pandemic, COVID-19 patients with predisposing factors are at an increased risk of mucormycosis, an uncommon angioinvasive infection that is caused by fungi with Mucor genus which is mainly found in plants and soil. Mucormycosis development in COVID-19 patient is related to various factors, such as diabetes, immunocompromise and neutropenia. Excessive use of glucocorticoids for the treatment of critically ill COVID-19 patients also leads to opportunistic infections, such as pulmonary aspergillosis. COVID-19 patients with mucormycosis have a very high mortality rate. This review describes the pathogenesis and various treatment approaches for mucormycosis in COVID-19 patients, including medicinal plants, conventional therapies, adjunct and combination therapies.