Raj K. Tiwari

Dr. Raj K. Tiwari


Research Focus & Metrics

Academic Career Length

24Years (2003-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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26 April 2024 in Life
Verified
Journal Article
Open access
PDF file
RHRahim Hirani
Rahim Hirani
KNKaleb Noruzi
Kaleb Noruzi
HKHassan Khuram
Hassan Khuram
AHAnum S. Hussaini
Anum S. Hussaini
EAEsewi Aifuwa
Esewi Aifuwa
MEMill Etienne
Mill Etienne
Artificial intelligence (AI) has emerged as a powerful tool in healthcare significantly impacting practices from diagnostics to treatment delivery and patient management. This article examines the progress of AI in healthcare, starting from the field’s inception in the 1960s to present-day innovative applications in areas such as precision medicine, robotic surgery, and drug development. In addition, the impact of the COVID-19 pandemic on the acceleration of the use of AI in technologies such as telemedicine and chatbots to enhance accessibility and improve medical education is also explored. Looking forward, the paper speculates on the promising future of AI in healthcare while critically addressing the ethical and societal considerations that accompany the integration of AI technologies. Furthermore, the potential to mitigate health disparities and the ethical implications surrounding data usage and patient privacy are discussed, emphasizing the need for evolving guidelines to govern AI’s application in healthcare.

20 February 2012 in PLOS ONE
Verified
Journal Article
Open access
PDF file
ASArulkumaran Shanmugam
Arulkumaran Shanmugam
SRShilpi Rajoria
Shilpi Rajoria
AGAndrea L. George
Andrea L. George
AMAbraham Mittelman
Abraham Mittelman
RSRobert Suriano
Robert Suriano
Raj K. TiwariRaj K. Tiwari
Raj K. Tiwari
Adjuvants serve as catalysts of the innate immune response by initiating a localized site of inflammation that is mitigated by the interactions between antigens and toll like receptor (TLR) proteins. Currently, the majority of vaccines are formulated with aluminum based adjuvants, which are associated with various side effects. In an effort to develop a new class of adjuvants, agonists of TLR proteins, such as bacterial products, would be natural candidates. Lipopolysaccharide (LPS), a major structural component of gram negative bacteria cell walls, induces the systemic inflammation observed in septic shock by interacting with TLR-4. The use of synthetic peptides of LPS or TLR-4 agonists, which mimic the interaction between TLR-4 and LPS, can potentially regulate cellular signal transduction pathways such that a localized inflammatory response is achieved similar to that generated by adjuvants. We report the identification and activity of several peptides isolated using phage display combinatorial peptide technology, which functionally mimicked LPS. The activity of the LPS-TLR-4 interaction was assessed by NF-κB nuclear translocation analyses in HEK-BLUE™-4 cells, a cell culture model that expresses only TLR-4, and the murine macrophage cell line, RAW264.7. Furthermore, the LPS peptide mimics were capable of inducing inflammatory cytokine secretion from RAW264.7 cells. Lastly, ELISA analysis of serum from vaccinated BALB/c mice revealed that the LPS peptide mimics act as a functional adjuvant. Our data demonstrate the identification of synthetic peptides that mimic LPS by interacting with TLR-4. This LPS mimotope-TLR-4 interaction will allow for the development and use of these peptides as a new class of adjuvants, namely TLR-4 agonists.

1 January 2010 in Thyroid®
Verified
Journal Article
Closed access
SRShilpi Rajoria
Shilpi Rajoria
RSRobert Suriano
Robert Suriano
ASArulkumaran Shanmugam
Arulkumaran Shanmugam
YWYushan Lisa Wilson
Yushan Lisa Wilson
SSStimson P. Schantz
Stimson P. Schantz
Raj K. TiwariRaj K. Tiwari
Raj K. Tiwari
Background: Over 200 million people worldwide are affected by thyroid proliferative diseases, including cancer, adenoma, and goiter, annually. The incidences of thyroid malignancies are three to four times higher in women, suggesting the possible involvement of estrogen. Based on this observed sex bias, we hypothesize that estrogen modulates the growth and metastatic propensity of thyroid cancer cells. Methods: In this study, two thyroid cell lines (Nthy-ori 3-1 and BCPAP) were evaluated for the presence of estrogen receptor (ER) by Western blot analysis and estrogen responsiveness by using a cell proliferation assay. In addition, the effect of estradiol (E2) on modulation of metastatic phenotype was determined by using in vitro adhesion, migration, and invasion assays. Results: Thyroid cells expressed a functionally active ER-α and ER-β as evidenced by 50–150% enhancement of proliferation in the presence of E2. E2 also enhanced adhesion, migration, and invasion of thyroid cells in an in vitro experimental model system that, based on our results, is modulated by β-catenin. Conclusion: Our data provide evidence that the higher incidence of thyroid cancer in women is potentially attributed to the presence of a functional ER that participates in cellular processes contributing to enhanced mitogenic, migratory, and invasive properties of thyroid cells. These findings will enable and foster the possible development of antiestrogenic therapy targeting invasion and migration, thus affecting metastatic propensity.

24 May 2011 in Journal of Hematology & Oncology
Verified
Journal Article
Open access
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AGAndrea L George
Andrea L George
PBPradeep Bangalore-Prakash
Pradeep Bangalore-Prakash
SRShilpi Rajoria
Shilpi Rajoria
RSRobert Suriano
Robert Suriano
ASArulkumaran Shanmugam
Arulkumaran Shanmugam
Raj K. TiwariRaj K. Tiwari
Raj K. Tiwari
Endothelial progenitor cells are increasingly being studied in various diseases ranging from ischemia, diabetic retinopathy, and in cancer. The discovery that these cells can be mobilized from their bone marrow niche to sites of inflammation and tumor to induce neovasculogenesis has afforded a novel opportunity to understand the tissue microenvironment and specific cell-cell interactive pathways. This review provides a comprehensive up-to-date understanding of the physiological function and therapeutic utility of these cells. The emphasis is on the systemic factors that modulate their differentiation/mobilization and survival and presents the challenges of its potential therapeutic clinical utility as a diagnostic and prognostic reagent.

13 April 2025 in Biomedicines
Verified
Journal Article
Open access
PDF file
EHEllen Nicole Huhulea
Ellen Nicole Huhulea
LHLillian Huang
Lillian Huang
SEShirley Eng
Shirley Eng
BSBushra Sumawi
Bushra Sumawi
AHAudrey Huang
Audrey Huang
MEMill Etienne
Mill Etienne
Cancer remains one of the leading causes of mortality worldwide, driving the need for innovative approaches in research and treatment. Artificial intelligence (AI) has emerged as a powerful tool in oncology, with the potential to revolutionize cancer diagnosis, treatment, and management. This paper reviews recent advancements in AI applications within cancer research, focusing on early detection through computer-aided diagnosis, personalized treatment strategies, and drug discovery. We survey AI-enhanced diagnostic applications and explore AI techniques such as deep learning, as well as the integration of AI with nanomedicine and immunotherapy for cancer care. Comparative analyses of AI-based models versus traditional diagnostic methods are presented, highlighting AI’s superior potential. Additionally, we discuss the importance of integrating social determinants of health to optimize cancer care. Despite these advancements, challenges such as data quality, algorithmic biases, and clinical validation remain, limiting widespread adoption. The review concludes with a discussion of the future directions of AI in oncology, emphasizing its potential to reshape cancer care by enhancing diagnosis, personalizing treatments and targeted therapies, and ultimately improving patient outcomes.

20 May 2025 in Medicina
Verified
Journal Article
Open access
PDF file
RHRahim Hirani
Rahim Hirani
DPDhruba Podder
Dhruba Podder
OSOlivia Stala
Olivia Stala
RMRyan Mohebpour
Ryan Mohebpour
Raj K. TiwariRaj K. Tiwari
Raj K. Tiwari
MEMill Etienne
Mill Etienne
Hospital length of stay (HLOS) is a critical healthcare metric influencing patient outcomes, resource utilization, and healthcare costs. While reducing HLOS can improve hospital efficiency and patient throughput, it also poses risks such as premature discharge, increased readmission rates, and potential compromise of patient safety. This literature review synthesizes current evidence on the determinants of HLOS, including patient-specific factors such as demographics, comorbidities, and socioeconomic status, as well as hospital-related factors like admission route, resource allocation, and institutional policies. We also examine the relationship between HLOS and key clinical outcomes, including mortality, readmission rates, and healthcare-associated infections. Additionally, we evaluate predictive modeling approaches, including artificial intelligence and machine learning, for forecasting HLOS and guiding early intervention strategies. While interventions such as enhanced recovery after surgery (ERAS) protocols, multidisciplinary care teams, and structured discharge planning have demonstrated efficacy in reducing HLOS, their success varies based on healthcare setting, patient complexity, and resource availability. Predictive analytics, incorporating clinical and non-clinical variables, offer promising avenues for improving hospital efficiency, yet may carry risks related to data quality and model bias. Given the impact of HLOS on clinical and economic outcomes, targeted interventions and predictive models should be applied cautiously, with future research focusing on refining personalized discharge strategies and addressing disparities across diverse patient populations.