Browsing by Author "A. Tiwari"

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Botulinum toxin in management of neuroma pain: Case report
(2006) A. Tiwari; A.P. Singh; R.K. Verma; V. Rastogi; R. Agrawal
Neuroma is a painful condition and always a challenging situation for pain clinicians. Botulinum toxin (BoNT) is a neurotoxin and it provides analgesia, possibly by inhibiting acetylcholine release or blocking autonomic pathways. We report two interesting cases of neuroma in which botulinum toxin (BoNT) serotype-A was locally infiltrated (10 units into the trigger point), three times after an interval of one month each. We observed relief of pain after 10 days and a complete remission after 4 months. © 2006 VSP.
Effect of dilution of both A-and B-sites on the multiferroic properties of spinal Mott insulators
(Institute of Physics Publishing, 2015) Prashant Shahi; Rahul K. Singh; Rajesh K. Singh; Shiv Kumar; A. Tiwari; A. Tripathi; J. Saha; S. Patnaik; A.K. Ghosh; Sandip Chatterjee
The structural, magnetic, electrical and transport properties of FeV2O4, by doping Li and Cr ions in A and B sites, respectively, have been studied. Dilution of the A site by Li doping decreases the V-V distances which in effect increases the A-V coupling. This increased coupling enhances the ferrimagnetic ordering temperature and reduces the ferroelectric transition temperature. Furthermore, since Li is non-magnetic the A-V coupling is also decreased. The increase in A-V coupling dominates over the decrease in A-V coupling with Li doping. On the other hand, Cr doping increases the ferrimagnetic ordering temperature but does not alter the ferroelectric transition temperature, which is due to the fact that the polarization originates from the presence of almost non-substituted regions. © 2015 IOP Publishing Ltd.
Magnetic order induced by magnetic impurities in the Haldane chain compound SrNi2V2O8
(Elsevier B.V., 2024) B.D. Sri Chandana; Ambili Narayanan; K. Saranya; D. Chandrasekhar Kakarla; A. Tiwari; B. Shanmugavelu; G. Peramaiyan; G. Chandra Shekar; Kwang-Yong Choi; I. Panneer Muthuselvam
Understanding the topological properties of Haldane spin systems offers promising avenues for exploring exotic quantum phases. We investigate the impact of S = 5/2 Mn2+ impurities on the magnetic properties of SrNi2V2O8, a well-known Haldane spin gapped system. Structural characterizations of SrNi2-xMnxV2O8 (x = 0.05, 0.15, 0.30 and 0.60) through Rietveld analyses of X-ray diffraction data confirm the preservation of the I41cd space group for all studied x, along with a preferential insertion of Mn2+ ions into Ni2+ sites. Magnetic susceptibility and magnetization data unveil a magnetic transition occurring in the temperature range of T = 93–99.3 K for x = 0.05–0.60. Dielectric data evince the absence of coupling between magnetic and ferroelectric phases. Notably, the magnetic ordering temperature varies little over a wide range of Mn concentrations, while notable anomalies are observed at x = 0.15. This peculiar behavior suggests that, across low-to-high concentrations, disorder-induced magnetic moments compete with the formation of spin singlets between the nearest Mn2+ impurities, which cancel out the magnetic moments. © 2024 Elsevier B.V.
Overview on nutraceuticals and biotechnology
(Elsevier, 2023) N. Rajak; A. Tiwari; P. Kumar; N. Garg
Modern lifestyles and dietary patterns have led to various disorders, such as obesity, hypertension, diabetes, cancer, and inflammation, because of increased industrialization, elevated levels of pollution, and improper nutrition. Nutraceuticals are dietary supplements, which act as an alternative source of medicines to treat various types of diseases. Nutraceuticals have been used to improve human well-being, treatment, disease prevention, and promote the optimal functioning of the body. Nutraceuticals are acquiring significant consideration recently because of their nutritive value and therapeutic potential. Nutraceuticals have been categorized as herb-derived bioactive compounds, nutrients, and dietary supplements. Biotechnological methods like genetic engineering have resulted in the increased production and nutritional values of various crops. In the current chapter, we discuss the properties of various bioactive compounds (alkaloids, anthraquinones, flavonoids, saponins, tannins, and essential oils), inorganic mineral supplements, spices, and herbs that act as nutraceuticals, along with their function in human health. Increasing usage of biotechnology in recent times has resulted in several improved nutraceutical products (in quantity as well as quality) such as golden rice (vitamin-enriched rice), flavr-savr tomato, and the use of organisms (especially microbes) for therapeutic purposes. Nutraceuticals and biotechnology are often correlated since the discovery of genetic engineering has paved the foundation for nutraceutical production. © 2023 Elsevier Inc. All rights reserved.
Pain and emergence agitation in children [3]
(2006) L.D. Mishra; A. Tiwari
[No abstract available]
Preimplantation embryonic development in a tropical vespertillionid bat
(2007) P.L. Pakrasi; A. Tiwari
Early embryonic development and implantation were studied in one of the Indian tropical bat Scotophilus heathi. This species is selected from its previous reports for an alternate animal model to study the reproduction in mammals. This bat is monoestrus. It also exhibits differential growth of embryos and generally one implantation per uterine horn. Embryo development was studied with dated pregnant females bred in captivity. Scotophilus heathi is an induced ovulator requiring several matings for ovulation to occur. In captivity, generally, it ovulates a single ovum after the third mating in captivity. The second ovulation occurs either at the fourth or fifth matings in the case when first ovulation occurs at the third mating. In our experiment, 70% of the bat ovulated both the ova simultaneously either at the fourth or fifth mating. The females that showed differential ovulation also showed differential embryonic development and differential implantation. The embryos could not begin compaction during cleavage and went to a state of block for about 8-10 days at the 6-8-cell stage. This block was found to be related to the formation of corpora lutea. Culmination of block coincides with the presence of progesterone in serum. Then, the developmental block is removed and embryos resume development. The total preimplantation period of development takes 20-22 days including the block period. This study reports that bat embryonic development can be studied like in other laboratory animals. It may also provide another model to study developmental block. © 2007 The Zoological Society of London.