38 research outputs found
Genome-wide analysis reveals distinct global populations of pink bollworm (Pectinophora gossypiella)
The pink bollworm (Pectinophora gossypiella) is one of the world's most destructive pests of cotton. This invasive lepidopteran occurs in nearly all cotton-growing countries. Its presence in the Ord Valley of North West Australia poses a potential threat to the expanding cotton industry there. To assess this threat and better understand population structure of pink bollworm, we analysed genomic data from individuals collected in the field from North West Australia, India, and Pakistan, as well as from four laboratory colonies that originated in the United States. We identified single nucleotide polymorphisms (SNPs) using a reduced-representation, genotyping-by-sequencing technique (DArTseq). The final filtered dataset included 6355 SNPs and 88 individual genomes that clustered into five groups: Australia, India-Pakistan, and three groups from the United States. We also analysed sequences from Genbank for mitochondrial DNA (mtDNA) locus cytochrome c oxidase I (COI) for pink bollworm from six countries. We found low genetic diversity within populations and high differentiation between populations from different continents. The high genetic differentiation between Australia and the other populations and colonies sampled in this study reduces concerns about gene flow to North West Australia, particularly from populations in India and Pakistan that have evolved resistance to transgenic insecticidal cotton. We attribute the observed population structure to pink bollworm's narrow host plant range and limited dispersal between continents
Synthesis and hypotensive activity of some 6-(substituted aryl)-4-methyl-2,3- dihydropyridazin-3-ones
1574-15796-(Substituted aryl)-4-methyl-2,
3-dihydropyridazin-3-ones are synthesized by cyclisation of appropriate β-(substituted aroyl)-2-methylene propionate with hydrazine hydrate in the
presence of sodium acetate. The title compounds are tested for hypotensive
activity, non-invasively, by tail-cuff method and are found to possess
significant hypotensive activity in normotensive rats
Synthesis of some 1,2,4-triazoles as potential antifungal agents
838-841
Some new 3-(p-substituted
anilinoethyl)-4-(p-substituted phenyl)-5-thioxo-1,2,4-triazoles 3a-p
are synthesized and evaluated for antifungal activity against Candida
albicans and Aspergillus niger.
</smarttagtype
<span style="font-size:14.0pt;line-height: 115%;font-family:"Times New Roman";mso-fareast-font-family:"Times New Roman"; color:#131313;mso-ansi-language:EN-IN;mso-fareast-language:EN-US;mso-bidi-language: HI;mso-bidi-font-weight:bold" lang="EN-IN">Syntheses and antiinflammatory activity of some 6-aryl-2,3,4,5-tetrahydro-3-pyridazinones</span>
614-619<span style="font-size:14.0pt;line-height:
115%;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#262626;mso-ansi-language:en-in;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-IN">6-Aryl-2<span style="font-size:14.0pt;line-height:115%;
font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#515151;mso-ansi-language:en-in;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-IN">, <span style="font-size:14.0pt;line-height:115%;
font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#262626;mso-ansi-language:en-in;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-IN">3<span style="font-size:14.0pt;line-height:115%;
font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#515151;mso-ansi-language:en-in;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-IN">, <span style="font-size:14.0pt;line-height:115%;
font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#262626;mso-ansi-language:en-in;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-IN">4<span style="font-size:14.0pt;line-height:115%;
font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#515151;mso-ansi-language:en-in;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-IN">, <span style="font-size:14.0pt;line-height:115%;
font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#262626;mso-ansi-language:en-in;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-IN">5-tetrahydro-3-pyridazinones <span style="font-size:14.0pt;
line-height:115%;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#131313;mso-ansi-language:en-in;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-IN">(2c-22c) <span style="font-size:14.0pt;line-height:
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115%;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#131313;mso-ansi-language:en-in;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-IN">by dehydrocyclisation <span style="font-size:14.0pt;
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font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#131313;mso-ansi-language:en-in;mso-fareast-language:en-us;mso-bidi-language:="" hi"="" lang="EN-IN">the <span style="font-size:14.0pt;line-height:115%;
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carrageenin induced paw edema test in <span style="font-size:
14.0pt;line-height:115%;font-family:" times="" new="" roman";mso-fareast-font-family:="" "times="" roman";color:#515151;mso-ansi-language:en-in;mso-fareast-language:="" en-us;mso-bidi-language:hi"="" lang="EN-IN">ra<span style="font-size:14.0pt;
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A phyto-pharmacological overview on <i style="mso-bidi-font-style:normal">Salvadora oleoides</i> Decne
209-214<span style="mso-fareast-font-family:Calibri;
mso-ansi-language:EN-US" lang="EN-US">Salvadora oleoides <span style="mso-fareast-font-family:Calibri;mso-ansi-language:EN-US;mso-bidi-font-style:
italic" lang="EN-US">Decne belonging to the family Salvadoraceae is a
small, multipurpose tree commonly grown in western Rajasthan and Gujarat states
of India. It is also known as Jhal
and Badapilu. Many chemical constituents such as carbohydrates,
alkaloids, steroids, glycosides, saponins, tannins, triterpenes, mucilage, fats
and oils have been reported from its
leaves and stems extracts. Because of the presence of these active
chemical constituents it possesses anti-inflammatory, analgesic, anti-ulcer,
anthelmintic, antibacterial, antifungal and diuretic activities. This review
summarizes the traditional claims, phytochemistry and pharmacology of S. oleoides reported so far in
scientific literature.
</span
Establishment of inherent stability on piracetam by UPLC/HPLC and development of a validated stability-indicating method
A novel comparative force degradation UPLC assay method was developed and validated for Piracetam and its degradation products. Piracetam was subjected to acid (5 M HCl), neutral (water) and alkaline (0.5 M NaOH) hydrolytic conditions at 80 °C, as well as to oxidative decomposition (H2O2) at room temperature. Photolytic studies were carried out by exposing this drug into sunlight (60,000–70,000 lux) for 2 d. Additionally, the solid drug was subjected to 50 °C for 60 days in a hot air oven for thermal degradation. The UPLC chromatographic separation was performed on Acquity UPLC BEH C18 column (1.7 μm, 2.1 mm × 150 mm) using isocratic mode (ACN:water, 25:75 v/v) at a flow rate of 0.15 mL min−1 and HPLC chromatographic separation was achieved on phenomenex C18 using isocratic mode (ACN:10 mM ammonium acetate, pH 5.0, 20:80 v/v) at a flow rate of 0.9 mL/min. Piracetam was found to degrade only in the base and shows stable behavior under all stress conditions. The UPLC and HPLC linearity of the proposed method was investigated in the range of 10–50 μg mL−1. The r2 value of UPLC and HPLC was found to be 0.999 and 0.999, respectively. Method detection limit (MDL) and Method quantification limit (MQL) were found to be 0.180 μg mL−1and 1.10 μg mL−1 for UPLC and 0.500 μg mL−1and 1.700 μg mL−1 for HPLC respectively. The %RSD values for intra-day and inter-day precision were <1.2%, confirming that the method was sufficiently precise. The validation studies were carried out fulfilling ICH requirements. The developed method was simple, fast, accurate and precise and hence could be applied for routine quality control analysis of Piracetam in solid dosage forms
A phyto-pharmacological overview on Salvadora oleoides Decne
Salvadora oleoides Decne belonging to the family Salvadoraceae is a small, multipurpose tree commonly grown in western Rajasthan and Gujarat states of India. It is also known as Jhal and Badapilu. Many chemical constituents such as carbohydrates, alkaloids, steroids, glycosides, saponins, tannins, triterpenes, mucilage, fats and oils have been reported from its leaves and stems extracts. Because of the presence of these active chemical constituents it possesses anti-inflammatory, analgesic, anti-ulcer, anthelmintic, antibacterial, antifungal and diuretic activities. This review summarizes the traditional claims, phytochemistry and pharmacology of S. oleoides reported so far in scientific literature
Isolation and hypotensive activity of five new phytoconstituents from chloroform extract of flowers of <i>H</i><i style="">ibiscus rosasinensis</i> Linn.
806-811Three extracts of Hibiscus rosasinensis Linn have been prepared and studied for their
hypotensive activity. Hydroalcoholic extract is found to exhibit prominent
activity when compared to the reference standard minoxidil followed by
chloroform extract. In an attempt to isolate the active constituents
responsible for this activity, five new phytoconstituents have been isolated
and their structures are elucidated from spectral evidence (IR, NMR and mass
spectra). Hypotensive activity of these compounds is also studied
Synthesis, spectral characterization, and pharmacological screening of some 4-[{1-(aryl)methylidene}-amino]-3-(4-pyridyl)-5-mercapto-4H-1,2,4-triazole derivatives
Background : Pain is an unpleasant and subjective sensation that results from a harmful sensorial stimulation, which alerts the body about current or potential damage to its tissues and organs. Fever is a complex physiological response triggered by infections or aseptic stimuli. Elevation in body temperature occurs when the concentration of prostaglandin E 2 (PGE 2 ) increases within parts of the brain. Triazole derivatives have been found to possess various pharmacological and biological activities, such as, anti-inflammatory, analgesics, antipyretic, and antifungal. Materials and Methods : Various 4-[{1-(aryl)methylidene}-amino]-3-(4-pyridyl)-5-mercapto-4H-1,2,4-triazole derivatives were synthesized by a sequence of reactions starting from isonicotinic acid hydrazide. The synthesized compounds were screened for in-vivo analgesic by the tail-flick method and anti-pyretic activities at a dose of 25 and 100 mg/kg body weight respectively. The antipyretic activity was evaluated using Brewer′s yeast induced pyrexia in rats. Fever was induced by subcutaneously injecting 20 ml/kg of 20% aqueous suspension of Brewer′s yeast in normal saline. Results and Discussion : The analgesic screening results revealed that the compounds 3b, 3c, and 3d exhibited excellent analgesic activity at 60 and 90 minutes compared to the standard drug (Analgin). Results revealed that the compounds 3a, 3e, and 3f significantly decreased the temperature of pyretic (P<0.001) rats at one, three and six hours after compound administration as compared to Aspirin (standard drug). Conclusion : Compounds 3b, 3c, and 3d exhibited significant analgesic activity comparable with the standard drug analgin, using the tail flick model. Compounds 3a, 3e, and 3f showed significant anti-pyretic activities comparable with the standard drug aspirin using the yeast-induced pyrexia model