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Gopalakrishnan N, Dineshkumar T, Dhanapriya J, Sakthirajan R, Balasubramaniyan T, Srinivasa Prasad ND, Thirumalvalavan K, Murugananth S, Kawaskar K. Deceased donor renal transplantation: A single center experience. Indian J Nephrol 2017; 27:4-8. [PMID: 28182043 PMCID: PMC5255989 DOI: 10.4103/0971-4065.179206] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Deceased donor renal transplantation (DDRT) constitutes less than 5% of all kidney transplantats in India. A retrospective analysis of 173 deceased donor renal transplants performed in a public funded government hospital was done. Mean age of the recipients was 36 years (male:female ratio 2.4:1), and that of the donors was 32.3 years (male:female ratio 6:1). The cold ischemic time was 340 ± 170 minutes. Mean follow-up period was 36 months. Forty one patients died, 75% of them in the first post - transplant year. Sepsis and cardiovascular disease were the most common causes of death. Twenty two percent had acute rejection. There was no significant difference in the incidence in the rate of acute rejection, bacterial, fungal infections and death rate between the cohorts of induction and non induction immunosuppression. The patient and death censored graft survival at 1 year were 80 and 82.6% and at 5 years were 76 and 80% respectively.
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Sakthirajan R, Dhanapriya J, Dineshkumar T, Gopalakrishnan N, Murugan S, Balasubramaniyan T. Thrombotic microangiopathy: An unusual cause of renal failure in rheumatoid arthritis. Indian J Nephrol 2017; 27:81-83. [PMID: 28182045 PMCID: PMC5255999 DOI: 10.4103/0971-4065.179207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Rheumatoid arthritis (RA) is one of the commonest rheumatological diseases. Renal involvement is not common but can occur as a result of chronic inflammation as part of disease process or drug toxicity. Thrombotic microangiopathy (TMA) is characterized by microangiopathic hemolytic anemia, thrombocytopenia, and organ failure of variable severity. Only a few cases of TMA in patients with RA were reported to date. We describe a 45-year-old female patient with RA who presented with oliguria and edema. Renal biopsy showed TMA with patchy cortical necrosis. She improved with hemodialysis and plasmapheresis.
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Gopalakrishnan N, Murugananth S, Dineshkumar T, Dhanapriya J, Sakthirajan R, Balasubramaniyan T. Two consecutive recurrences of crescentic immunoglobulin A nephropathy in a renal transplant recipient. Indian J Nephrol 2016; 26:376-378. [PMID: 27795636 PMCID: PMC5015520 DOI: 10.4103/0971-4065.169565] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
We report a 21-year-old male who developed end-stage renal disease, probably due to immunoglobulin A nephropathy (IgAN), received a renal transplant from his mother, which was lost due to crescentic IgAN after 18 months. Two years later, he received a second transplant from a deceased donor. He developed rapidly progressive graft dysfunction 3 years later. Allograft biopsy revealed crescentic IgAN, which was successfully treated with intravenous steroids and cyclophosphamide. Recurrence of IgAN in two successive allografts in one patient has not been reported previously.
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Gopalakrishnan N, Arul R, Dhanapriya J, Kumar TD, Sakthirajan R, Balasubramaniyan T. Familial Lecithin Cholesterol Acyl Transferase Deficiency with Chronic Kidney Disease. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 2016; 64:90-91. [PMID: 27766813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Familial lecithin-cholesterol acyltransferase (LCAT) deficiency is a rare autosomal recessive (AR) disease caused by mutation in the LCAT gene. LCAT enzyme esterifies cholesterol molecules in high-density lipoprotein(HDL) and low density-lipoprotein (LDL) particles. This enzyme deficiency is characterised by progressive corneal opacification, glomerulopathy, mild - moderate haemolytic anaemia and very low plasma levels of HDL. We here report a 34 year-old lady who presented with hypertension, nephrotic proteinuria, renal failure, corneal ring opacities, anemia and dyslipidemia. The diagnosis of familial LCAT deficiency was confirmed by clinical examination, characteristic dyslipidemia, undetectable LCAT levels in plasma and positive family history.
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Surendar D, Dineshkumar T, Dhanapriya J, Sakthirajan R, Balasubramanian T, Gopalakrishnan N. Deceased donor renal transplant graft survival – A single center experience. INDIAN JOURNAL OF TRANSPLANTATION 2016. [DOI: 10.1016/j.ijt.2016.09.077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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31
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Gopalakrishnan N, Abeesh P, Dineshkumar T, Murugananth S, Sakthirajan R, Raman GS, Dhanapriya J, Balasubramaniyan T, Haris M. Prevalence of serum anti M-type phospholipase A2 receptor antibody in primary membranous nephropathy: A single center experience. Indian J Nephrol 2016; 26:257-61. [PMID: 27512297 PMCID: PMC4964685 DOI: 10.4103/0971-4065.160334] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022] Open
Abstract
We conducted a prospective study to assess utility of detection of antibodies to phospholipase A2receptor (PLA2R) in the serum of patients with membranous nephropathy. Seventy five patients with biopsy proven membranous nephropathy admitted between January 2011 and September 2014 were studied. Serum anti- PLA2R was tested by indirect immunofluorescence. The test was positive in 45 out of 60 patients with primary membranous nephropathy (PMN) and in none of the 15 patients with secondary membranous nephropathy, with a sensitivity of 75% and specificity of 100% for PMN. Anti PLA2R positivity also showed a significant correlation with quantum of proteinuria and negative correlation with serum albumin. This study has validated detection of serum anti PLA2R in PMN as a non invasive diagnostic tool in Indian patients.
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Bhuvaneshwari S, Gopalakrishnan N. Hydrothermally synthesized Copper Oxide (CuO) superstructures for ammonia sensing. J Colloid Interface Sci 2016; 480:76-84. [PMID: 27416288 DOI: 10.1016/j.jcis.2016.07.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Revised: 07/01/2016] [Accepted: 07/04/2016] [Indexed: 10/21/2022]
Abstract
According to environmental protection agencies (EPA), the emission threshold of NH3 in air is 1000kg/yr which is now about 20Tg/yr. Hence, there is a rapid increase in need of NH3 sensors to timely detect and control NH3 emissions. Metal oxide nanostructures such as CuO with special features are potential candidates for NH3 sensing. In the present study, morphology controlled 3-dimensional CuO superstructures were synthesized by surfactant-free hydrothermal method for NH3 detection. In addition to conventional hydrothermal method where water as solvent, a modified approach using a mixture of water and ethylene glycol (EG) was used as solvent to control the growth process. Hierarchical superstructures namely, snowflake-like, flower-like, hollow-sphere-like and urchin-like feature with particle dimensions ranging from 0.3 to 1μm were obtained by varying water/EG ratio and reaction temperature. The synthesized nanostructures exhibited morphology dependent luminescence and gas sensing properties. The surface area and pore distribution determined by BET surface analysis also largely influenced by the presence of EG in the reaction system. The average pore diameter enhanced from 6nm to 14nm by the addition of 10ml EG as solvent. The room temperature ammonia sensing behavior of all samples was studied using an indigenous gas sensing set-up. It was found that hollow-sphere like CuO nanostructures showed a maximum sensitivity of 150% towards 600ppm ammonia with a response and recovery time of 6min. The hydrothermal synthesis strategy reported here has the advantage of producing shape controlled hierarchical materials are highly suitable for various technological applications.
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Dhanapriya J, Gopalakrishnan N, Arun V, Dineshkumar T, Sakthirajan R, Balasubramaniyan T, Haris M. Acute kidney injury and disseminated intravascular coagulation due to mercuric chloride poisoning. Indian J Nephrol 2016; 26:206-8. [PMID: 27194836 PMCID: PMC4862267 DOI: 10.4103/0971-4065.164230] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Mercury is a toxic heavy metal and occurs in organic and inorganic forms. Inorganic mercury includes elemental mercury and mercury salts. Mercury salts are usually white powder or crystals, and widely used in indigenous medicines and folk remedies in Asia. Inorganic mercury poisoning causes acute kidney injury (AKI) and gastrointestinal manifestations and can be life-threatening. We describe a case with unknown substance poisoning who developed AKI and disseminated intravascular coagulation (DIC). Renal biopsy showed acute tubular necrosis. Later, the consumed substance was proven to be mercuric chloride. His renal failure improved over time, and his creatinine normalized after 2 months.
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Gopalakrishnan N, Dhanapriya J, Seenivasan M, Dineshkumar T, Sakthirajan R, Balasubramaniyan T. Secondary Hyperkalemic Paralysis and Acute Kidney Injury Due to Rhabdomyolysis Caused by Sea-Snake Envenomation. Toxicol Int 2016. [DOI: 10.22506/ti/2016/v23/i1/146678] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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Bhuvaneshwari S, Gopalakrishnan N. Facile synthesis of low dimensional CuO nanostructures and their gas sensing applications. CRYSTAL RESEARCH AND TECHNOLOGY 2016. [DOI: 10.1002/crat.201500243] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Dhanapriya J, Dineshkumar T, Gopalakrishnan N, Sakthirajan R, Balasubramaniyan T. Clinicopathological correlation and treatment response of primary focal segmental glomerulosclerosis in adults and adolescents. Indian J Nephrol 2016; 26:347-351. [PMID: 27795629 PMCID: PMC5015513 DOI: 10.4103/0971-4065.167283] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
The incidence of focal segmental glomerulosclerosis (FSGS) is approximately 10% in children <6 years, 20% in adolescents, and 20-25% in adults. A retrospective observational study was done to document clinicopathological correlation, treatment response, and risk factors in the progression of chronic kidney disease (CKD) of primary FSGS in adults and adolescents. A total of 170 patients were studied with a mean follow-up of 4.32 ± 1.2 years. FSGS not otherwise specified was the most common subtype (56%) followed by tip variant (24%). About 32% had complete remission (CR) at a mean time of 6.4 months, 23% had partial remission (PR) at a mean time of 5.7 months, and 45% had no response to steroids. Persistent nephrotic proteinuria at 3rd and 6th month and presence of interstitial fibrosis and tubular atrophy >30% in renal biopsy are the independent predictors of poor response to treatment. Presence of anemia, interstitial fibrosis, and tubular atrophy of >30% in renal biopsy and the absence of remission after treatment were the independent predictors of CKD progression. Overall renal survival was 78% at 3 years and 54% at 5 years. Renal survival difference with or without nephrotic proteinuria at onset was 39% and 69% at 5 years. Renal survival was higher in patients with normal renal function (66%) compared with those who had renal failure (42%) at 5 years. Renal survival at 5 years for CR was 69%, PR was 49%, and no remission was 42%.
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Dhanapriya J, Gopalakrishnan N, Sakthirajan R, Dineshkumar T, Balasubramaniyan T, Md. Haris. Angiomyolipoma of donor kidney: Successful transplantation and 5-year follow-up. Indian J Nephrol 2016; 26:131-3. [PMID: 27051138 PMCID: PMC4795429 DOI: 10.4103/0971-4065.159552] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Angiomyolipomas (AML) of the kidney are non-encapsulated benign neoplasms with the incidence of 45-80% in patients with tuberous sclerosis and 1-3% in sporadic cases. There are very few case reports in the literature in which kidneys with AML have been used for transplantation. We report here a 27-year-old female patient who received a live related renal transplant from her mother with isolated angiomyolipoma in donor kidney and on follow-up after 5 years, has stable graft function and tumor size.
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Dhanapriya J, Kumar TD, Gopalakrishnan N, Balasubramaniyan T. Lymphomatous Infiltration of Kidneys. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 2015; 63:74-76. [PMID: 26591152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Renal involvement in lymphoma usually occurs late in the course of the disease and is clinically silent. Acute kidney injury (AKI) is rare, with the reported incidence of 0.5% in the literature. We describe here a 20 years old female patient who presented with non-dialysis requiring AKI and renal biopsy showed lymphomatous infiltration of kidneys. Though renal function improved, patient died due to central nervous system involvement.
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Murugananth S, Arul R, Dineshkumar T, Dhanapriya J, Sakthirajan R, Gopalakrishnan N. Clinical spectrum of tuberculosis in renal transplant recipients. INDIAN JOURNAL OF TRANSPLANTATION 2015. [DOI: 10.1016/j.ijt.2015.09.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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40
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Gopalakrishnan N, Hannam R, Casoni GP, Barriet D, Ribe JM, Haug M, Halaas Ø. Infection and immunity on a chip: a compartmentalised microfluidic platform to monitor immune cell behaviour in real time. LAB ON A CHIP 2015; 15:1481-1487. [PMID: 25608968 DOI: 10.1039/c4lc01438c] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Cells respond to their environments and self-organise into multicellular assemblies with dedicated functions. The migratory and homing response of cells to soluble ligands can be studied by using different techniques, but for real time studies of complex multicellular self-organisation, novel and simpler systems are required. We fabricated a flexible open access microsystem and tested the design by studying cell recruitment from an immune cell reservoir towards an infectious compartment. The two compartments were connected by a network of bifurcated microchannels allowing diffusion of signalling molecules and migration of cells. Bacterial filters were incorporated in the design to prevent bacteria and activated cells from entering the network, permitting migration only from the recruitment reservoir. The fabricated microsystem allows real-time continuous monitoring of cellular decision-making based on biologically produced gradients of cytokines and chemokines. It is a valuable tool for studying cellular migration and self-organisation in relation to infections, autoimmunity, cancer, stem cell homing, and tissue and wound repair.
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Balamonica K, Ramamohan Rao A, Nimala Sundaran M, Chellapandi P, Gopalakrishnan N. Experimental studies on CSRDM specimen to validate the use of Ritz vectors for the response evaluation of structures subjected to multi-support excitation. NUCLEAR ENGINEERING AND DESIGN 2015. [DOI: 10.1016/j.nucengdes.2014.11.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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42
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Muralisankar S, Gopalakrishnan N. Robust stability criteria for Takagi–Sugeno fuzzy Cohen–Grossberg neural networks of neutral type. Neurocomputing 2014. [DOI: 10.1016/j.neucom.2014.04.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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43
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Gopalakrishnan N, Bhuvaneshwari S, Balakrishnan L, Gowrishankar S. Hydrothermal Synthesis and Gas Sensing Properties of CuO Nanorods. ACTA ACUST UNITED AC 2013. [DOI: 10.1166/sl.2013.3078] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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44
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Gopalakrishnan N, Abraham A, Balasubramaniyan T, Dineshkumar T, Dhanapriya J, Malathy N, Haris M, Prasad NDS. IgG4 related interstitial nephritis: A case report and review of literature. Indian J Nephrol 2013; 23:308-11. [PMID: 23960352 PMCID: PMC3741980 DOI: 10.4103/0971-4065.114489] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
IgG4 interstitial nephritis is a recently described entity. A middle-aged gentleman with bilateral parotid enlargement, hepatosplenomegaly and generalized lymphadenopathy was referred to us for evaluation of renal failure. He had trace proteinuria and large kidneys. Kidney biopsy revealed interstitial nephritis with characteristic storiform fibrosis. Immunohistochemistry demonstrated intense staining for IgG4-secreting plasma cells in the interstitium.
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Jayalakshmi G, Gopalakrishnan N, Panigrahi BK, Balasubramanian T. Grain boundary defects induced room temperature ferromagnetism in V doped ZnO thin films. CRYSTAL RESEARCH AND TECHNOLOGY 2011. [DOI: 10.1002/crat.201100226] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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46
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Gopalakrishnan N, Balakrishnan L, Brindha A, Jayalakshmi G. Thickness and substrate orientation dependence of ferromagnetism in Mn doped ZnO thin films. CRYSTAL RESEARCH AND TECHNOLOGY 2011. [DOI: 10.1002/crat.201100425] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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47
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Gopalakrishnan N, Shin BC, Bhuvana KP, Elanchezhiyan J, Balasubramanian T. Fabrication of GaN doped ZnO nanocrystallines by laser ablation. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2008; 8:4168-4171. [PMID: 19049196 DOI: 10.1166/jnn.2008.an19] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Here, we present the fabrication of pure and GaN doped ZnO nanocrystallines on Si(111) substrates by KrF excimer laser. The targets for the ablation have been prepared by conventional ceramic method. The fabricated nanocrystallines have been investigated by X-ray diffraction, photoluminescence and atomic force microscopy. The X-ray diffraction analysis shows that the crystalline size of pure ZnO is 36 nm and it is 41 nm while doped with 0.8 mol% of GaN due to best stoichiometry between Zn and O. Photoluminescence studies reveal that intense deep level emissions have been observed for pure ZnO and it has been suppressed for the GaN doped ZnO structures. The images of atomic force microscope show that the rms surface roughness is 27 nm for pure ZnO and the morphology is improved with decrease in rms roughness, 18 nm with fine crystallines while doped with 1 mol% GaN. The improved structural, optical and morphological properties of ZnO nanocrystalline due to GaN dopant have been discussed in detail.
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Kumar KS, Muthumani K, Gopalakrishnan N, Sarma BS, Reddy G, Parulekar Y. Reduction of Large Seismic Deformations using Elasto-plastic Passive Energy Dissipaters. DEFENCE SCI J 2003. [DOI: 10.14429/dsj.53.2134] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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49
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Mohan Kumar R, Gopalakrishnan N, Jayavel R, Ramasamy P. Investigations on the Nucleation Kinetics of L-Arginine Phosphate single crystals. CRYSTAL RESEARCH AND TECHNOLOGY 1999. [DOI: 10.1002/(sici)1521-4079(199912)34:10<1265::aid-crat1265>3.0.co;2-r] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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50
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Jayakumar M, Gopalakrishnan N, Vijayakumar R, Rajendran S, Muthusethupathi MA. Systemic fungal infections in renal transplant recipients at Chennai, India. Transplant Proc 1998; 30:3135. [PMID: 9838385 DOI: 10.1016/s0041-1345(98)01290-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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