Naduviladath Vishvanath Chandrasekharan

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A highly repetitive DNA element from the genome of the filarial nematode Dirofilaria repens has been cloned and sequenced. The 176-base pair repeating units are arranged in direct tandem and are clustered in the parasite genome. All repeats appear to belong to a single family although some elements have diverged significantly. The repeats are present in(More)
A genomic library constructed in a bacteriophage lambda replacement vector (EMBL3) with Wuchereria bancrofti DNA partially digested with Sau 3A I was screened with 32P-labeled W. bancrofti total DNA, and a strongly reactive recombinant, EMBL3Wb34, was isolated. This clone contained an approximately 16-kb insert that showed some cross-hybridization with(More)
Oligonucleotide primers were designed to amplify a 490-basepair DNA fragment in the 5' end of the pWb 12 repeated DNA sequence in Wuchereria bancrofti for specific amplification of W. bancrofti DNA by the polymerase chain reaction (PCR). A single microfilaria in 100 microliter of blood or added to 1 ml of blood, a single third-stage larva in a pool of 20(More)
BACKGROUND Cleft palate is the commonest multifactorial epigenetic disorder with a prevalence of 0.43-2.45 per 1000. The objectives of this study were to evaluate the clinical features and identify the 22q11.2 deletion in patients with cleft palate in Sri Lanka. MATERIALS AND METHODS Cleft patients attending a Teaching Hospital in Sri Lanka were recruited(More)
Tests based on the polymerase chain reaction (PCR) for the detection of the Mycobacterium tuberculosis complex in clinical samples have a lower sensitivity when compared to culture. This has been attributed to the presence of inhibitors to Taq polymerase and/or suboptimal DNA extraction procedures. We tested different methods of processing smear negative(More)
Two repetitive sequences (IpSdM and IpSdS) have been cloned and sequenced from the genome of Setaria digitata. When IpSdM (214 bp) and IpSdS (201 bp) were aligned, a high degree of homology (85%) was observed, indicating that they belong to the same family of repeats. IpSdM represents a complete repeating element while IpSdS consists of two partial(More)
OBJECTIVE To evaluate cyclooxygenase isozyme distribution in tissues from dogs and determine the differential sensitivity of canine cyclooxygenase (COX)-1 and -2 isozymes to nonsteroidal anti-inflammatory drugs (NSAIDs). SAMPLE POPULATION Canine tissue samples (stomach, duodenum, ileum, jejunum, colon, spleen, cerebral cortex, lung, ovary, kidney, and(More)
The aim of the study was to determine drug sensitivity and DNA fingerprints of Mycobacterium tuberculosis strains from retreatment cases of pulmonary tuberculosis. The study population consisted of 131 culture positive, retreatment tuberculosis patients admitted to the Chest Hospital, Welisara, Sri Lanka who had taken anti-tuberculosis drugs previously.(More)
Leptospirosis has a major impact on health in Sri Lanka but is probably grossly under-recognized due to difficulties in clinical diagnosis and lack of diagnostic laboratory services. The objective of this study was to establish and evaluate a SYBR Green-based real-time Polymerase Chain Reaction (rt-PCR) assay for early, rapid and definitive laboratory(More)
Research letters The first autochthonous case of visceral leishmaniasis (VL) in Sri Lanka was reported in 2007 [1], more than a decade after the first report of autochthonous cutaneous leishmaniasis (CL) in 1992 [2]. Since 2007 only three endemic patients with confirmed VL was reported from the country (two from the Anuradhapura district), and the current(More)