Salivary Metabolomics for Oral Precancerous Lesions: A Comprehensive Narrative Review

Oral submucous fibrosis (OSMF) is a chronic, potentially malignant disorder of the oral cavity, primarily associated with the consumption of areca nut products and other risk factors. Early and accurate diagnosis of OSMF is crucial to prevent its progression to oral cancer. In recent years, the field of metabolomics has gained momentum as a promising approach for disease detection and monitoring. Salivary metabolomics, a non-invasive and easily accessible diagnostic tool, has shown potential in identifying biomarkers associated with various oral diseases, including OSMF. This review synthesizes current literature on the application of salivary metabolomics in the context of OSMF detection. The review encompasses a comprehensive analysis of studies conducted over the past decade, highlighting advancements in analytical techniques, metabolomic profiling, and identified biomarkers linked to OSMF progression. The primary objective of this review is to provide a critical assessment of the feasibility and reliability of salivary metabolomics as a diagnostic tool for OSMF, along with its potential to differentiate OSMF from other oral disorders. In conclusion, salivary metabolomics holds great promise in revolutionizing OSMF detection through the identification of reliable biomarkers and the development of robust diagnostic models. However, challenges such as sample variability, validation of biomarkers, and standardization need to be addressed before its widespread clinical implementation. This review contributes to a comprehensive understanding of the current status, challenges, and future directions of salivary metabolomics in the realm of OSMF detection, emphasizing its potential impact on early intervention and improved patient outcomes

Studies on the Anti-Cancer Activity of Corchorusin-d, a Saikosaponin Like Compound Isolated from Corchorus Acutangulus, a Wild Herb

Leukemia is a heterogeneous group of neoplasm arising from the malignant transformation of hematopoietic cells. Development of multi-drug resistance is one of the major problems in leukemia. On the other hand melanoma is a less common but deadly type of cancer among all types of skin cancer. Therefore, exploration of new molecules that could revolutionize the management of the disease is urgently needed. Drug discovery from medicinal plants has played an important role in the treatment of cancer and indeed clinical applications of plant secondary metabolites and their derivatives towards combating cancer have been common over the last half centuries. Considering the huge natural resources of India, there is scope for development of potential therapeutic agents from plants. Keeping in mind the thrust of present scenario and based on established reports, the present study was carried out to explore constituents Corchorus acutangulus Lam. (C. aestuans) for anticancer activity. Except one isolated study by a Chinese group, not much work has been done to find out the biological activity of the plant extract and isolates thereof

Hemangioendothelioma of soft tissue: Cytological dilemma in two cases at unusual sites

Hemangioendothelioma is a rare vascular tumor of intermediate malignancy. Cytologically, it can simulate a non-vascular malignant tumor. We report two cases of this tumor, which were misdiagnosed at cytology. In the first case, a 27-year-old man presented with an anterior abdominal wall tumor. Fine needle aspiration cytology (FNAC) of the tumor showed polygonal cells with vacuolated cytoplasm in clusters having moderate nuclear atypia in a background of necrosis. A diagnosis of metastatic carcinoma was made. The histological examination showed features of epithelioid hemangioendothelioma. In the second case, a 13-year-old female child presented with unilateral enlargement of the right tonsil. At ultrasound-guided FNAC, a diagnosis of, ‘small round cell tumor, could be consistent with alveolar rhabdomyosarcoma,’ was made. The histological examination showed features of papillary intralymphatic angioendothelioma (Dabska's tumor). We conclude that epithelioid hemangioendothelioma should be considered in the differential diagnosis of metastatic carcinoma and small round cell tumor even at unusual sites

Data from: Deciphering a survival strategy during the interspecific competition between Bacillus cereus MSM-S1 and Pseudomonas sp. MSM-M1

Interspecific competition in bacteria governs colony growth dynamics and pattern formation. Here, we demonstrate an interesting phenomenon of interspecific competition between Bacillus cereus MSM-S1 and Pseudomonas sp. MSM-M1, where secretion of an inhibitor by Pseudomonas sp. is used as a strategy for survival. Although B. cereus grows faster than Pseudomonas sp., in the presence of Pseudomonas sp. the population of B. cereus reduces significantly, whereas Pseudomonas sp. do not show any marked alteration in their population growth. Appearance of a zone of inhibition between growing colonies of two species on nutrient agar prevents the expanding front of the MSM-S1 colony from accessing and depleting nutrients in the region occupied by MSM-M1, thereby aiding the survival of the slower growing MSM-M1 colonies. To support our experimental results, we present simulations, based on a chemotactic model of colony growth dynamics. We demonstrate that the chemical(s) secreted by Pseudomonas sp. is responsible for the observed inhibition of growth and spatial pattern of the B. cereus MSM-S1 colony. Our experimental results are in excellent agreement with the numerical results and confirm that secreted inhibitors enable Pseudomonas sp. to survive and coexist in the presence of faster growing B. cereus, in a common niche

Comparative growth pattern of M1 on Nutrient agar plate

This file contains data and calculations in support of figure 2

Effect of corchorusin-D, a saikosaponin like compound, on B16F10 melanoma cells (in vitro and in vivo)

Corchorusin-D (COR-D), isolated from Corchorus acutangulus, was reported to induce apoptosis in leukemic cells. However, no studies concerning its activity on melanoma cells have been reported. We have evaluated its in vitro anti-cancer activity on melanoma cells (B16F10, SK-MEL-28, and A375). The results demonstrate that CORD showed maximum inhibition of B16F10 cells in vitro. COR-D induced mitochondrial dysfunction and altered the Bax/Bcl-2 ratio with down regulation of pro-caspases 9 and activation of caspase 3 in B16F10 cells, triggering intrinsic pathway of apoptosis. Moreover, it inhibited the in vivo B16F10 tumor growth and increased the survival rate of mice. Greater number of Annexin V-FITC and propidium iodide (PI)- positive tumor cells signified that COR-D induced apoptosis in vivo also. The reduction in tumor growth is well correlated with decreased microvascular density of the tumor cells in treated mice. In conclusion, this study reveals that COR-D-induced mitochondrial dysfunction is responsible for the induction of apoptotic cell deat

Growth characteristics of S1 and M1 on Nutrient agar plates

This file contains the data and calculations in support of figure 1

File S1_supporting Information_BCetal

This file contains supporting Information on Methods, Results and Reaction-Diffusion Mode

Comparative growth characteristics of S1 on Nutrient agar plate

This file contains data and calculations in support of figure 2