Bozhidar Krasimirov Hristov

Dr. Bozhidar Krasimirov Hristov

orcid

Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

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

Representative Publications

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8 November 2024 in Life
Verified
Journal Article
Open access
PDF file
PUPetar Angelov Uchikov
Petar Angelov Uchikov
UKUsman Khalid
Usman Khalid
GDGranit Harris Dedaj-Salad
Granit Harris Dedaj-Salad
DGDibya Ghale
Dibya Ghale
HRHarney Rajadurai
Harney Rajadurai
PSPavel Stanchev
Pavel Stanchev
Breast cancer is the most prevalent cancer worldwide, affecting both low- and middle-income countries, with a growing number of cases. In 2024, about 310,720 women in the U.S. are projected to receive an invasive breast cancer diagnosis, alongside 56,500 cases of ductal carcinoma in situ (DCIS). Breast cancer occurs in every country of the world in women at any age after puberty but with increasing rates in later life. About 65% of women with the BRCA1 and 45% with the BRCA2 gene variants develop breast cancer by age 70. While these genes account for 5% of breast cancers, their prevalence is higher in certain populations. Advances in early detection, personalised medicine, and AI-driven diagnostics are improving outcomes by enabling a more precise analysis, reducing recurrence, and minimising treatment side effects. Our paper aims to explore the vast applications of artificial intelligence within the diagnosis and treatment of breast cancer and how these advancements can contribute to elevating patient care as well as discussing the potential drawbacks of such integrations into modern medicine. We structured our paper as a non-systematic review and utilised Google Scholar and PubMed databases to review literature regarding the incorporation of AI in the diagnosis and treatment of non-palpable breast masses. AI is revolutionising breast cancer management by enhancing imaging, pathology, and personalised treatment. In imaging, AI can improve the detection of cancer in mammography, MRIs, and ultrasounds, rivalling expert radiologists in accuracy. In pathology, AI enhances biomarker detection, improving HER2 and Ki67 assessments. Personalised medicine benefits from AI’s predictive power, aiding risk stratification and treatment response. AI also shows promise in triple-negative breast cancer management, offering better prognosis and subtype classification. However, challenges include data variability, ethical concerns, and real-world validation. Despite limitations, AI integration offers significant potential in improving breast cancer diagnosis, prognosis, and treatment outcomes.

11 November 2023 in Life
Verified
Journal Article
Open access
PDF file
KKKrasimir Iliev Kraev
Krasimir Iliev Kraev
MGMariela Gencheva Geneva-Popova
Mariela Gencheva Geneva-Popova
BHBozhidar Krasimirov Hristov
Bozhidar Krasimirov Hristov
PUPetar Angelov Uchikov
Petar Angelov Uchikov
SPStanislava Popova-Belova
Stanislava Popova-Belova
Vesela Todorova Mitkova-HristovaVesela Todorova Mitkova-Hristova
Vesela Todorova Mitkova-Hristova
Febuxostat, initially developed as a xanthine oxidase inhibitor to address hyperuricemia in gout patients, has evolved into a versatile therapeutic agent with multifaceted applications. This review provides a comprehensive overview of febuxostat’s mechanism of action, its effectiveness in gout management, its cardiovascular safety profile, renal and hepatic effects, musculoskeletal applications, safety considerations, and emerging research prospects. Febuxostat’s primary mechanism involves selective inhibition of xanthine oxidase, resulting in reduced uric acid production. Its pharmacokinetics require personalized dosing strategies based on individual characteristics. In gout management, febuxostat offers a compelling alternative, effectively lowering uric acid levels, relieving symptoms, and supporting long-term control, especially for patients intolerant to allopurinol. Recent studies have demonstrated its cardiovascular safety, and it exhibits minimal hepatotoxicity, making it suitable for those with liver comorbidities. Febuxostat’s potential nephroprotective effects and kidney stone prevention properties are noteworthy, particularly for gout patients with renal concerns. Beyond gout, its anti-inflammatory properties hint at applications in musculoskeletal conditions and a broader spectrum of clinical contexts, including metabolic syndrome. Emerging research explores febuxostat’s roles in cardiovascular health, neurological disorders, rheumatoid arthritis, and cancer therapy, driven by its anti-inflammatory and antioxidative properties. Future directions include personalized medicine, combination therapies, mechanistic insights, and ongoing long-term safety monitoring, collectively illuminating the promising landscape of febuxostat’s multifaceted therapeutic potential.

1 March 2024 in Diagnostics
Verified
Journal Article
Open access
PDF file
PUPetar Angelov Uchikov
Petar Angelov Uchikov
UKUsman Khalid
Usman Khalid
KKKrasimir Iliev Kraev
Krasimir Iliev Kraev
BHBozhidar Krasimirov Hristov
Bozhidar Krasimirov Hristov
MKMaria Kraeva
Maria Kraeva
ABAtanas Iliev Batashki
Atanas Iliev Batashki
Background: The aim of this review is to explore the role of artificial intelligence in the diagnosis of colorectal cancer, how it impacts CRC morbidity and mortality, and why its role in clinical medicine is limited. Methods: A targeted, non-systematic review of the published literature relating to colorectal cancer diagnosis was performed with PubMed databases that were scouted to help provide a more defined understanding of the recent advances regarding artificial intelligence and their impact on colorectal-related morbidity and mortality. Articles were included if deemed relevant and including information associated with the keywords. Results: The advancements in artificial intelligence have been significant in facilitating an earlier diagnosis of CRC. In this review, we focused on evaluating genomic biomarkers, the integration of instruments with artificial intelligence, MR and hyperspectral imaging, and the architecture of neural networks. We found that these neural networks seem practical and yield positive results in initial testing. Furthermore, we explored the use of deep-learning-based majority voting methods, such as bag of words and PAHLI, in improving diagnostic accuracy in colorectal cancer detection. Alongside this, the autonomous and expansive learning ability of artificial intelligence, coupled with its ability to extract increasingly complex features from images or videos without human reliance, highlight its impact in the diagnostic sector. Despite this, as most of the research involves a small sample of patients, a diversification of patient data is needed to enhance cohort stratification for a more sensitive and specific neural model. We also examined the successful application of artificial intelligence in predicting microsatellite instability, showcasing its potential in stratifying patients for targeted therapies. Conclusions: Since its commencement in colorectal cancer, artificial intelligence has revealed a multitude of functionalities and augmentations in the diagnostic sector of CRC. Given its early implementation, its clinical application remains a fair way away, but with steady research dedicated to improving neural architecture and expanding its applicational range, there is hope that these advanced neural software could directly impact the early diagnosis of CRC. The true promise of artificial intelligence, extending beyond the medical sector, lies in its potential to significantly influence the future landscape of CRC’s morbidity and mortality.

22 November 2023 in Life
Verified
Journal Article
Open access
PDF file
KKKrasimir Iliev Kraev
Krasimir Iliev Kraev
MGMariela Gencheva Geneva-Popova
Mariela Gencheva Geneva-Popova
BHBozhidar Krasimirov Hristov
Bozhidar Krasimirov Hristov
PUPetar Angelov Uchikov
Petar Angelov Uchikov
SPStanislava Popova-Belova
Stanislava Popova-Belova
AIAtanas Slavchev Ivanov
Atanas Slavchev Ivanov
Janus kinase (JAK) inhibitors have heralded a paradigm shift in the management of immune-mediated diseases. While their efficacy is well-established, the safety concerns associated with these agents, particularly regarding thromboembolic events (TE), remain a focus of extensive research and clinical scrutiny. This comprehensive literature review embarks on an exploration of the multifaceted landscape of JAK inhibitors, providing insights into their safety profiles across diverse immune-mediated diseases. The introduction highlights the transformative influence of JAK inhibitors in the treatment of immune-mediated diseases. Historically, the therapeutic arsenal for these conditions included corticosteroids, disease-modifying antirheumatic drugs (DMARDs), and biologics. The advent of JAK inhibitors has revolutionized this landscape, although concerns about their safety persist. This review strives to comprehensively evaluate their safety, amalgamating knowledge from multiple studies and trials. The subsequent sections delve into the safety of specific JAK inhibitors in the context of rheumatoid arthritis, inflammatory bowel diseases, and dermatologic conditions and their associations with venous thromboembolism. The evolving understanding of TE risk, particularly the intricate relationship between these agents and immune-mediated diseases, is meticulously unravelled. The concluding remarks underscore the dynamic nature of TE risk assessment with regard to immune-mediated diseases involving JAK inhibitors. It underscores that risk assessment is multifactorial, influenced not only by the choice of JAK inhibitor but also by the nuances of the underlying immune-mediated disease and the unique patient characteristics. This review offers a holistic perspective on TE risks associated with JAK inhibitors and contributes to the ongoing dialogue regarding their safety in the realm of immune-mediated diseases.

1 February 2024 in Diagnostics
Verified
Journal Article
Open access
PDF file
KKKrasimir Iliev Kraev
Krasimir Iliev Kraev
BHBozhidar Krasimirov Hristov
Bozhidar Krasimirov Hristov
PUPetar Angelov Uchikov
Petar Angelov Uchikov
MKMaria Kraeva
Maria Kraeva
YBYordanka Basheva-Kraeva
Yordanka Basheva-Kraeva
MGMariela Gencheva Geneva-Popova
Mariela Gencheva Geneva-Popova
This comprehensive review delves into the complex realm of antinuclear antibodies (ANAs), expanding beyond their traditional involvement in autoimmune rheumatic disorders. By digging into historical changes, diagnostic complexity, and clinical significance, the debate reveals the shifting relationships between ANAs, particularly with cancer. Specialized studies provide practical insights on ANA testing processes, standardization, and upcoming challenges. Examining prevalence trends in the United States provides a time dimension to ANA dynamics, linking autoimmune and oncological considerations. The debate delves into the complexity of lupus erythematosus, emphasizing ANAs’ diverse presentations and their potential as flexible diagnostic and prognostic indicators. The complex relationship between ANAs and cancer is highlighted, demonstrating their potential as early markers or indicators of malignancies. Looking ahead, this synthesis anticipates advances in personalized medicine and collaborative research, putting ANAs at the forefront of advanced diagnostics and treatments for autoimmune disorders and cancer. This synthesis envisions a future for ANA research in which these antibodies play a critical role in promoting personalized treatment, enhancing diagnostics, and fostering collaborative initiatives that cross traditional boundaries. As ANAs grow more prominent at the junction of autoimmune illnesses and cancer, this synthesis lays the path for further research and novel advances in understanding, diagnosing, and treating complicated medical conditions.

28 July 2023 in Medicina
Verified
Journal Article
Open access
PDF file
TKTeodor Kuskunov
Teodor Kuskunov
ETEduard Emil Tilkiyan
Eduard Emil Tilkiyan
DDDaniel Ilianov Doykov
Daniel Ilianov Doykov
KBKrasimir Boyanov
Krasimir Boyanov
Anelia BivolarskaAnelia Bivolarska
Anelia Bivolarska
BHBozhidar Krasimirov Hristov
Bozhidar Krasimirov Hristov
Introduction: Numerous studies to date have shown that the development of dysbiotic gut microbiota is a characteristic finding in chronic kidney disease (CKD). A number of uremic toxins progressively accumulate in the course of CKD, some of them generated by the intestinal microbiome, such as indoxyl sulfate (IS) and p-cresyl sulfate (p-CS). They are found to be involved in the pathogenesis of certain complications of uremic syndrome, including low-grade chronic inflammation and oxidative stress. The aim of the present study is to research the serum concentration of IS and p-CS in end stage renal disease (ESRD) patients undergoing conventional hemodialysis, as well as to study the possibilities of influencing some markers of inflammation and oxidative stress after taking a synbiotic. Materials and Methods: Thirty patients with end-stage renal disease (ESRD) undergoing hemodialysis treatment who were taking a synbiotic in the form of Lactobacillus acidophilus La-14 2 × 1011 (CFU)/g and prebiotic fructooligosaccharides were included in the study. Serum levels of total IS, total p-CS, Interleukin-6 (IL-6), and Malondialdehyde (MDA) were measured at baseline and after 8 weeks. Results. The baseline values of the four investigated indicators in the patients were significantly higher—p-CS (29.26 ± 58.32 pg/mL), IS (212.89 ± 208.59 ng/mL), IL-6 (13.84 ± 2.02 pg/mL), and MDA (1430.33 ± 583.42 pg/mL), compared to the results obtained after 8 weeks of intake, as we found a significant decrease in the parameters compared to the baseline—p-CS (6.40 ± 0.79 pg/mL, p = 0.041), IS (47.08 ± 3.24 ng/mL, p < 0.001), IL-6 (9.14 ± 1.67 pg/mL, p < 0.001), and MDA (1003.47 ± 518.37 pg/mL, p < 0.001). Conclusions: The current study found that the restoration of the intestinal microbiota in patients with CKD significantly decreases the level of certain uremic toxins. It is likely that this favorably affects certain aspects of CKD, such as persistent low-grade inflammation and oxidative stress.