Publications by authors named "Shanmugapriya R"

Article Synopsis
  • A new fluorescent probe (RS5) shows a significant response in detecting Al(III) ions, with a 54 nm red-shift when bound.
  • The complex forms a 1:1 ratio and enhances fluorescence due to inner charge transfer and chelation effects, achieving a detection limit of 0.3 µM.
  • RS5 is effective in various natural water sources and biological samples, demonstrating high recovery rates in Al(III) detection across a pH range of 6-8.
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Human immunodeficiency virus-infected patients have depleted CD4 lymphocyte counts and are susceptible to a plethora of infections of bacterial, viral, and fungal etiology. In addition to a wide range of systemic manifestations, human immunodeficiency virus-infected patients also display several characteristic oral manifestations. Studies have shown a correlation between some of the oral manifestations and CD4 lymphocyte counts which in turn is an independent prognostic indicator.

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The commercially available fluorophore, 3-hydroxy-2-naphthoic hydrazide (RS2), has rationally been selected for the study, which displays a rapid fluorescent response and high sensitivity for CN and Al(III) ions in neat DMSO and HO-DMSO (1:1 v/v) media. The addition of CN to RS2 triggers an enhancement in fluorescence at 505 nm (green fluorescence), while the addition of Al(III) increases the fluorescence of the probe with a blue-shift of emission maximum by 25 nm (bluish-green fluorescence). The probe's action was investigated by H NMR titrations that indicate deprotonation of OH and NH moieties by these ions.

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Three Schiff base based probes are designed and synthesized by facile condensation of a commercially available fluorophore 2,6-diformyl-4-tert-butylphenol with 4-nitro-2-aminophenol (KP1), 2-aminophenol (KP2) and 4-tert-butyl-2-aminophenol (KP3) and are characterized using various spectral techniques. The probes exhibit high selectivity and sensitivity CN and Al(III) ions with striking fluorescent signaling responses in HO-DMSO (1:1, v/v) medium. The mechanism of the probes' detection of CN involves deprotonation of the phenolic OH group(s) followed by nucleophilic addition of CN onto imine C-atom.

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Background: Cleansing the teeth with a toothbrush and paste is an indubitable mechanical plaque control method practiced by almost everyone. Eliminating dental plaque is an essential, fundamental and mandatory step to prevent the occurrence of periodontal diseases that are rife globally. The aim of the present study is to compare the antiplaque effectiveness of a prepared herbal and commercially available dentifrice.

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Aim: A study was conducted to evaluate the ameliorative potential of homeopathic drugs in combination (Sulfur 30C, 30C, Graphites 30C, and Psorinum 30C) in 16 dogs affected with oral papillomatosis which was not undergone any previous treatment.

Materials And Methods: Dogs affected with oral papillomatosis, which have not undergone any initial treatment and fed with a regular diet. Dogs (total=16) were randomly divided into two groups, namely, homeopathic treatment group (n=8) and placebo control group (n=8).

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