Department of Pharmacy

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Author: search.filters.author.Singhvi, GautamSubject: search.filters.subject.Nanotechnology

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    Emerging trends of nanotechnology in advanced cosmetics
    (Elsevier, 2022-06) Pandey, Murali Monohar; Singhvi, Gautam
    The cosmetic industry is dynamic and ever-evolving. Especially with the introduction and incorporation of nanotechnology-based approaches into cosmetics for evincing novel formulations that confers aesthetic as well as therapeutic benefits. Nanocosmetics acts via numerous delivery mechanisms which involves lipid nanocarrier systems, polymeric or metallic nanoparticles, nanocapsules, dendrimers, nanosponges,etc. Each of these, have particular characteristic properties, which facilitates increased drug loading, enhanced absorption, better cosmetic efficacy, and many more. This article discusses the different classes of nanotechnology-based cosmetics and the nanomaterials used for their formulation, followed by outlining the categories of nanocosmetics and the scope of their utility pertaining to skin, hair, nail, lip, and/or dental care and protection thereof. This review also highlights and discusses about the key drivers of the cosmetic industry and the impending need of corroborating a healthy regulatory framework, refocusing attention towards consumer needs and trends, inculcating sustainable techniques and tenets of green ecological principles, and lastly making strides in nano-technological advancements which will further propel the growth of the cosmetic industry.
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    Multifunctional nanocrystals for cancer therapy: a potential nanocarrier
    (Elsevier, 2019) Singhvi, Gautam
    Nanotechnology-based drug delivery systems offer an unprecedented opportunity for tumor targeting. Nanocrystals are carrier-free crystalline nanosized solid drug particles. Due to high drug loading (as high as 100%), and being free of organic solvents or surfactants or polymers or solubilizing chemicals, nanocrystals have attracted great attention in the field of drug delivery for treatment of various cancers. Additionally, the hybrid or multifunctional nanocrystal has been extensively investigated for applications in experimental as well as clinical settings to improve delivery efficiency of therapeutic and diagnostic agents. This review gives an overview of recent advances and current status of nanocrystals, especially with respect to the method of preparations, physicochemical characterizations, in vitro/in vivo performance, scale-up techniques and applications in the field of drug delivery for different tumor targeting. Recently much attention has been given to multifunctional nanocrystals showing the capability to codeliver multiple components that target the drug delivery by surface functionalization, performing therapy as well as diagnosis. Preparative techniques like high-pressure homogenization, precipitation, and media milling have been known to show large-scale production of nanocrystals. High therapeutic applications of nanoparticles enable its administration through various routes like oral, parenteral, pulmonary, dermal, and ocular. Along with preparation and characterization, this review will dwell on the progress involved with multifunctional nanocrystals for cancer therapy and theranostics. Most available results in multifunctional nanocrystal targeting rely upon in vitro and animal models, which do not match the actual environment of the tumor in the body, which is one of the major obstacles. Other challenges faced when it comes to nanocrystals are scale-up and reproducibility. In addition, potential problems and possible future research directions for the advancement of newer techniques of multifunctional nanocrystals that make them highly suitable for tumor targeted are highlighted in this review
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    Nanocarriers For Drug Delivery: Mini Review
    (Bentham Science, 2018) Singhvi, Gautam
    Nanocarriers have been a part of drug delivery for some decades now. Due to the enormous advantages offered by them, they are replacing the conventionally available systems.
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    Regulatory aspects in process development and scale-up of nanopharmaceuticals
    (Future Science Group, 2020-04) Singhvi, Gautam
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    The Hedgehog pathway and its inhibitors: Emerging therapeutic approaches for basal cell carcinoma
    (Elsevier, 2022-04) Singhvi, Gautam
    Basal cell carcinoma (BCC) is the most common non-melanoma skin cancer (NMSC). Although surgery is the first-line treatment, BCC can lead in some cases, to a metastatic or advanced form, requiring targeted combination therapies. The Hedgehog (Hh) signalling pathway is the major pathway associated with the formation of basal carcinoma tumorigenesis, thus, targeting this is a promising therapeutic approach. Some Hh inhibitors have been approved by the US Food and Drug Administration (FDA), such as vismodegib and sonidegib. However, both of these showed limited effectiveness against resistant tumors. Therefore, an essential understanding of the mechanisms involved in the Hh signaling pathway is necessary to improve tumor inhibition.