Herein, we investigate the influence of aspect ratio and quantum confinement on the single-photon (σ) and two-photon absorption cross-section (σ) for perovskite CsPbI nanorod (NR). Notably, experimentally measured data show extremely high σ for CsPbI NR (10.8 × 10 GM) which is five orders of magnitude higher than organic chromophores, and two order of magnitude higher than CsPbBr nanocrystals.
View Article and Find Full Text PDFAlthough water is essential for life, as per the United Nations, around 2 billion people in this world lack access to safely managed drinking water services at home. Herein we report the development of a two-dimensional (2D) fluorinated graphene oxide (FGO) and polyethylenimine (PEI) based three-dimensional (3D) porous nanoplatform for the effective removal of polyfluoroalkyl substances (PFAS), pharmaceutical toxins, and waterborne pathogens from contaminated water. Experimental data show that the FGO-PEI based nanoplatform has an estimated adsorption capacity () of ∼219 mg g for perfluorononanoic acid (PFNA) and can be used for 99% removal of several short- and long-chain PFAS.
View Article and Find Full Text PDFOsteosarcoma (OS), also referred to as osteogenic sarcoma, is the most common primary malignant tumour affecting long bones, characterised by the proliferation of osteoblastic precursor cells and the production of osteoid or immature bone. OSs of the head and neck region have unique biology, exhibiting a clinical behaviour and a natural history that are distinct from OSs of the trunk and extremities. Similarly, their radiological appearance and histological growth pattern can be quite diverse proving to be a challenge to histopathologists to arrive at a diagnosis.
View Article and Find Full Text PDFDue to the lack of early detection before metastasis and failure of current therapy to cure the disease, lung cancer contributes to the highest cancer-related mortality worldwide. Tenascin C (TNC) (+) exosomes promote metastasis, amphiregulin (AREG) (+) exosomes are associated with chemotherapy resistance, and programmed cell death ligand-1 (PDL-1) (+) exosomes are associated with immunotherapy resistance, and they are emerging as biomarkers in clinics. However, due to heterogeneity, rapid isolation and multiplex detection of these exosomes are challenging.
View Article and Find Full Text PDFConspectusOver the past five decades, significant progress has been made in the field of anion recognition with a diverse variety of synthetic receptors because of the fundamental importance of anions in chemical, environmental, and biological processes. In particular, urea- and thiourea-based molecules offering directional binding sites are attractive receptors for anions due to their ability to bind anions employing primarily hydrogen-bonding interactions under neutral conditions and have gained a recent paramount attention in the area of supramolecular chemistry. The presence of two imine (-NH) groups on each urea/thiourea functionality in these receptors gives them potential for excellent binding of an anion, mimicking the natural binding process in living cells.
View Article and Find Full Text PDFJ Cancer Res Ther
April 2022
Adenoid Cystic Carcinoma (AdCC) is an uncommon malignant epithelial salivary gland neoplasm, which is indolent yet persistent. Intraosseous /central variant of AdCC of the jaw is poorly understood owing to its innocuous clinical presentation thus posing a diagnostic challenge. AdCC is characterized by perineural invasion, late distant metastasis and a high recurrence rate , thus having a major effect on the mortality and morbidity rate.
View Article and Find Full Text PDFInt J Appl Basic Med Res
April 2021
Granular cell tumor (GCT) is a rare benign tumor chiefly affecting the orofacial region, especially tongue. The origin of this neoplasia, after remaining a controversy for years, was finally identified to be from Schwann cell or neuroendocrine cell. They usually present as asymptomatic, firm, sessile, submucosal, solitary, or multiple nodule/papule like lesions.
View Article and Find Full Text PDFLangerhans cell histiocytosis (LCH) is a rare hematological disorder characterized by local or generalized, uncontrolled proliferation and infiltration of Langerhans type of histiocytic cells. It represents a spectrum of clinicopathologic disorders, ranging from a highly aggressive and frequently fatal multisystem disease to an easily cured solitary lesion of bone. Involvement of children and the younger age group is more common than the adults.
View Article and Find Full Text PDFJ Oral Maxillofac Pathol
January 2019
Calcifying epithelial odontogenic tumor (CEOT), also known as Pindborg tumor, is a rare benign but locally aggressive odontogenic neoplasm, accounts for <1% of all odontogenic tumors. CEOT is usually seen in the posterior area of the mandible in-between 30 and 50 years of age without definite sex predilection. A painless, slow-growing swelling with bone expansion is the most common clinical feature of CEOT.
View Article and Find Full Text PDFBis-bidentate ligand HL featuring two o-amidophenol noninnocent units was used to synthesize novel binuclear complexes [(L)M(•L•)M(L)](ClO), M = Fe (1) and Co (2, 3), with HL (R = CH, Cl) being the facially coordinating tetradentate coligands. Upon the synthesis, the fully reduced amidophenolate form of the ligand (L) becomes oxidized, resulting in the formation of a rare example of a biradical (•L•) bridge connecting two metal ions, as supported by X-ray crystallography. The electronic structures of the complexes have been probed by Mössbauer spectroscopy, magnetic susceptibility measurements, and electron paramagnetic resonance (EPR) spectroscopy.
View Article and Find Full Text PDFCalcifying epithelial odontogenic tumor (CEOT) is a rare, benign, odontogenic tumor arising from the odontogenic epithelium and accounts for approximately 1% of all odontogenic tumors. Clear cell variant of CEOT is a distinct entity and has more aggressive biological behavior and higher chances of recurrence. Here, we present a unique case of clear cell variant of CEOT involving the left side of the maxillary alveolus in a 73-year-old female patient with thorough clinical, radiological, and histological details.
View Article and Find Full Text PDFOxidase activities of a μ-hydroxidodimanganese(III) system involving a series of tetradentate capping ligands HL with a pair of phenolate arms have been investigated in the presence of 3,5-di-tert-butylcatechol (HDBC) as a coligand cum-reductant. The reaction follows two distinctly different paths, decided by the substituent combinations (R and R) present in the capping ligand. With the ligands HL and HL, the products obtained are semiquinonato compounds [Mn(L)(DBSQ)]·2CHOH (1) and [Mn(L)(DBSQ)]·CHOH (2), respectively.
View Article and Find Full Text PDFMyofibroma is a benign uncommon fibroblastic tumour originating from the soft tissue, bone and may affect both children and adults. Radiographically myofibroma presents as unilocular radiolucency. Histologically, typical biphasic cellular arrangement is noted.
View Article and Find Full Text PDFJ Oral Maxillofac Pathol
January 2017
Mesenchymal chondrosarcoma (MC) is a rare variety of chondrosarcoma (CS), which is both clinically unique and histologically distinct compared with conventional CS. Maxillofacial MCs are aggressive, have a tendency for recurrence and significant distant metastasis to lung and bone, and are associated with overall poor prognosis. Histopathologically, it is a biphasic tumor comprising of islands of hyaline cartilage with undifferentiated small round cells.
View Article and Find Full Text PDFChronic hyperplastic candidiasis (CHC), earlier known as candidal leukoplakia, is a variant of oral candidiasis that classically presents as a white patch on the commissures of the oral mucosa and it is mostly caused by . Clinically, the lesions are usually asymptomatic and regress after appropriate antifungal therapy and correction of the underlying cause. If the lesions are untreated, a small portion may develop dysplasia and later progress into carcinoma.
View Article and Find Full Text PDFClear cell odontogenic carcinoma is a rare, aggressive neoplasm of the jaw with only 74 reported cases. It occurs predominantly in the mandibular anterior region during fifth to seventh decades of life. Clinically it manifests as intra-bony swelling with a variable degree of pain.
View Article and Find Full Text PDFA new family of pentanuclear 3d-4f heterometal complexes of general composition [Ln(III)2(M(II)L)3(μ3-O)3H](ClO4)·xH2O (1-5) [Ln = Nd, M = Zn, 1; Nd, Ni, 2; Nd, Cu, 3; Gd, Cu, 4; Tb, Cu, 5] have been synthesized in moderate yields (50-60%) following a self-assembly reaction involving the hexadentate phenol-based ligand, viz., N,N-bis(2-hydroxy-3-methoxy-5-methylbenzyl)-N('),N(')-diethylethylenediamine (H2L). Single-crystal X-ray diffraction analyses have been used to characterize these complexes.
View Article and Find Full Text PDFActinomycosis is a rare chronic infectious disease caused primarily by Actinomyces israelli. Although they are normal inhabitants of the oral cavity, infection occurs when there is a breach in the mucosa allowing them access to the subcutaneous tissues. Poor oral hygiene, dental caries, recent dental extraction, oromaxillofacial trauma have been implicated as risk factors for actinomycosis.
View Article and Find Full Text PDFA new series of nonoxido vanadium(IV) compounds [VL2] (L = L(1)-L(3)) (1-3) have been synthesized using dithiocarbazate-based tridentate Schiff-base ligands H2L(1)-H2L(3), containing an appended phenol ring with a tert-butyl substitution at the 2-position. The compounds are characterized by X-ray diffraction analysis (1, 3), IR, UV-vis, EPR spectroscopy, and electrochemical methods. These are nonoxido V(IV) complexes that reveal a rare distorted trigonal prismatic arrangement around the "bare" vanadium centers.
View Article and Find Full Text PDFContemp Clin Dent
October 2011
Chondrosarcoma is a rare primary malignant neoplasm of the head, neck, oral and maxillofacial regions. The clinicopathological and radiographic findings are usually characteristic; however, not decisive. The neoplasm is usually treated by wide surgical resection because it is traditionally radioresistant.
View Article and Find Full Text PDFThe protonated form [H(2)(L)](CF(3)SO(3))(2) (1) of a new redox-active bis-bidentate nitrogenous heterocyclic ligand, viz., 3,3'-dipyridin-2-yl[1,1']bi[imidazo[1,5-a]pyridinyl] (L), and its zinc(II) and cadmium(II) complexes (2 and 3) have been synthesized and characterized by single-crystal X-ray diffraction analysis. In the solid state, both 2 and 3 have triple-stranded helical structures involving ligands that experience twisting and bending to the extent needed by the stereoelectronic demand of the central metal ion.
View Article and Find Full Text PDF