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- 저자 : Devinder Singh Rana (검색결과 2 건)
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( Sagar Verma ),( Priyanka Singh ),( Shiffali Khurana ),( Nirmal Kumar Ganguly ),( Ritushree Kukreti ),( Luciano Saso ),( Devinder Singh Rana ),( Vibha Taneja ),( Vinant Bhargava ) 대한신장학회 2021 Kidney Research and Clinical Practice Vol.40 No.2
Moderate levels of endogenous reactive oxygen species (ROS) are important for various cellular activities, but high levels lead to toxic ity and are associated with various diseases. Levels of ROS are maintained as a balance between oxidants and antioxidants. Accu mulating data suggest that oxidative stress is a major factor in deterioration of renal function. In this review, we highlight the possible mechanism by which oxidative stress can lead to chronic kidney disease (CKD). This review also describes therapies that counter the effect of oxidative stress in CKD patients. Numerous factors such as upregulation of genes involved in oxidative phosphorylation and ROS generation, chronic inflammation, vitamin D deficiency, and a compromised antioxidant defense mechanism system cause pro gressive detrimental effects on renal function that eventually lead to loss of kidney function. Patients with renal dysfunction are highly susceptible to oxidative stress, as risk factors such as diabetes, renal hypertension, dietary restrictions, hemodialysis, and old age predispose them to increased levels of ROS. Biomolecular adducts (DNA, proteins, and lipids) formed due to reaction with ROS can be used to determine oxidative stress levels. Based on the strong correlation between oxidative stress and CKD, reversal of oxidative stress is being explored as a major therapeutic option. Xanthine oxidase inhibitors, dietary antioxidants, and other agents that scav enge free radicals are gaining interest as treatment modalities in CKD patients.
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Terence Kee,Jong Cheol Jeong,Harun Ur Rashid,Nura Afza Salma Begum,Mel-Hatra Arakama,Romina Danguilan,Lkhaahuu Od-Erdene,Rosnawati Yahya,김예림,Hersharan Kaur Sran,Becky Ma,Maggie Ma,Devinder Singh Rana 대한이식학회 2021 Korean Journal of Transplantation Vol.35 No.4
Background: Asia is the global epicenter of the coronavirus disease 2019 (COVID-19) pandemic; however, COVID-19–related mortality in Asia remains lower than in other parts of the world. It is uncertain whether the mortality of COVID-19-infected kidney transplant recipients (KTXs) from Asia follows the lower mortality trends of the younger Asian population. Methods: Specific transplant centers from countries in the Asian Society of Transplantation were invited to participate in a study to examine the epidemiology, clinical features, natural history, and outcomes of COVID-19 infections in KTXs. Data were analyzed and compared with those of large cohort studies from other countries. Results: The study population was 87 KTXs from nine hospitals in seven Asian countries. Within the study population, 9% were aged 60 years and older, and 79% had at least one comorbidity. The majority of patients (69%) presented with mild-to-moderate COVID-19 severity. Disease progression was more frequently encountered among those with moderate or severe infection (23%) and non-survivors (55%). The mortality rate was 23% (n=20) and differed according to the level of care: 12% (n=1/8), 15% (n=10/67), and 100% (n=9/9) of patients managed as outpatients, in the general ward, and in the intensive care unit, respectively. Disease severity at the time of presentation was an independent predictor of mortality. Compared with the mortality rates in other studies worldwide, mortality rates in the current study were comparable. Conclusions: Mortality in Asian KTXs who were infected with COVID-19 remains high and could be related to comorbidity burden and the constraints of the general healthcare system when the COVID-19 caseload is high.
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