Alen Bišćanin

Dr. Alen Bišćanin

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Research Focus & Metrics

Academic Career Length

11Years (2016-Present)

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

Representative Publications

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12 October 2016 in Anticancer Research
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Journal Article
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ABAlen Bišćanin
Alen Bišćanin
NLNeven Ljubičić
Neven Ljubičić
MBMarko Boban
Marko Boban
DBDrinko Baličević
Drinko Baličević
IPIvana Pavić
Ivana Pavić
MDMarko Duvnjak
Marko Duvnjak
Background/Aim: Colorectal cancer is a major public health problem. The adenoma–carcinoma sequence offers potential for screening and surveillance. We tested the clinical behavior and diagnostic utility of connexin 43 (CX43) in connection with pathohistological risk. Patients and Methods: Immunohistochemical expression of CX43 in colonic adenomas and surrounding mucosa from 87 patients was determined. Results: CX43 expression was higher in mucosa surrounding adenomas with high-grade dysplasia (p=0.047), larger adenomas (p=0.015) and villous adenomas (p=0.02). No difference of CX43 expression in adenomas according to grade of dysplasia was found (p=0.87). CX43 expression in adenomas was dependent on the patient's hemoglobin level (p=0.002), family history of colorectal cancer (p=0.009) and statin therapy (p=0.049). Conclusion: CX43 expression in mucosa surrounding adenoma could be an additional factor indicative of malignant potential. CX43 expression in colonic adenoma seems to be closely related to family history of colorectal cancer, statin therapy and hemoglobin level.


12 July 2025 in Healthcare
Verified
Journal Article
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ABAlen Bišćanin
Alen Bišćanin
LPLeon Palac
Leon Palac
ZDZdravko Dorosulić
Zdravko Dorosulić
DKDominik Kralj
Dominik Kralj
PĆPetra Ćaćić
Petra Ćaćić
VTVedran Tomasic
Vedran Tomasic
Background/Objectives: Inflammatory bowel disease (IBD) is a chronic gastrointestinal disorder marked by relapsing episodes of gastrointestinal inflammation, potentially causing severe symptoms. These unpredictable acute episodes, paired with chronic disabilities, such as fatigue and malabsorption, and extensive pharmacological and surgical treatments, can severely impact patients’ quality of life. This study aimed to assess which aspects of the patients’ lives IBD impacts, and how IBD patients perceive their disease. Methods: All IBD patients who had an appointment in our tertiary centre from 10 October 2022 to 21 February 2023, were invited to complete anonymous questionnaires. The questionnaires used were IBDQ-32, WPAI, and IBD Disk, all designed specifically to assess the IBD patients’ quality of life. Results: The questionnaires were completed by a total of 159 participants, 51% of whom were males, 47.9% who had UC, and 49.4% who had been or were currently treated with biologics. There was no statistically significant difference in the answers from patients with CD compared to UC, as well as those treated with conventional therapies compared to those with advanced options. Most of them considered their health to be good, but only a few (12.8%) claimed, with absolute certainty, that their health was at the level of healthy individuals, and only 13 (8.3%) claimed their health was excellent. A total of 95 (60.1%) participants expressed at least minor limitations when performing strenuous activities, but lighter forms of activities were not affected as much by the disease. A significant portion (48.7%) of the participants believed they were exposed to more stress than others, and their current pharmacological therapy was the cause of fear in 26.5%. A total of 119 (75.3%) participants believed that the disease affected their lives at least mildly during remission. Conclusions: Our study showed that IBD patients have diminished quality of life, not only in the periods of active disease but also during clinical remission. The decline in quality of life was not solely attributed to physical symptoms, as previously thought. Other factors, such as mental health issues, were found to impact quality of life as well. We firmly believe that restoring quality of life should be emphasised in guidelines as one of the most important therapeutic goals.

15 March 2022 in Turkish Journal of Gastroenterology
Verified
Journal Article
Closed access
DHDavor Hrabar
Davor Hrabar
PĆPetra Ćaćić
Petra Ćaćić
ABAlen Bišćanin
Alen Bišćanin
VTVedran Tomasic
Vedran Tomasic
DKDominik Kralj
Dominik Kralj
TBToni Babarović
Toni Babarović
Background: Severe acute respiratory syndrome coronavirus 2 pandemic is affecting public health systems and mental health significantly. Patients with inflammatory bowel disease are witnessing vigorous organizational changes in inflammatory bowel disease centers and experiencing all psychosocial effects of the crisis. We conducted a single-center cross-sectional study in order to assess inflammatory bowel disease patients’ concerns, behavior, and satisfaction with provided healthcare during severe acute respiratory syndrome coronavirus 2 pandemic. Methods: All inflammatory bowel disease patients treated in our center from April 1 to June 1, 2020, were invited to fulfill an anonymous online questionnaire. Results: A total of 132 participants have completed the questionnaire, 63.2% were female, 57.9% had Crohn’s disease (CD) During the first wave of the pandemic, 74.2% of participants perceived themselves as a high-risk group for acquiring coronavirus disease 2019 only because they suffered from inflammatory bowel disease, and 66.2% thought inflammatory bowel disease medications make them more susceptible to coronavirus disease 2019. This especially concerned patients treated with biologics (B = 2.068, P < .01). Females were more stressed (B = −1.451, P < .01) and concerned (B = −1.488, P < .01) about the pandemic, and they also reported more potential benefits from professional psychological help (B = −2.664, P = .02). Six patients (5.3%) discontinued inflammatory bowel disease therapy on their own initiative. Seventy-eight (68.4%) patients were completely satisfied and 14 (12.3%) were partially satisfied with the quality of healthcare provided in our inflammatory bowel disease center. Conclusion: Female inflammatory bowel disease patients tend to be more emotionally vulnerable during severe acute respiratory syndrome coronavirus 2 pandemic. Although psychological support should be continuously available to all inflammatory bowel disease patients, female gender may warrant special attention. Providing patients with adequate and early information during pandemic probably leads to better compliance and higher satisfaction. Cite this article as: Hrabar D, Cacic P, Biscanin A, et al. IBD patients’ perception of severe acute respiratory syndrome coronavirus 2 pandemic and satisfaction with provided healthcare: A cross-sectional study. Turk J Gastroenterol. 2022;33(3):190-195.

16 March 2026 in Biomedicines
Verified
Journal Article
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ZHZeljka Belosic Halle
Zeljka Belosic Halle
VTVedran Tomasic
Vedran Tomasic
ABAlen Bišćanin
Alen Bišćanin
PĆPetra Ćaćić
Petra Ćaćić
IZIvona Saric Zeba
Ivona Saric Zeba
IMIvana Mikolasevic
Ivana Mikolasevic
Background/Objectives: Immune checkpoint inhibitors (ICIs) have revolutionized the treatment of various malignancies, but their use is frequently accompanied by immune-related adverse events, among which immune-mediated colitis (IMC) represents one of the most common and clinically significant gastrointestinal toxicities. IMC may lead to treatment interruption, increased morbidity, and compromised quality of life. This review aims to provide a comprehensive overview of the pathophysiology, risk factors, diagnosis, management, and emerging therapeutic strategies with particular emphasis on the role of the gut microbiota and fecal microbiota transplantation (FMT). Methods: This review integrates current international guidelines, meta-analyses, clinical trials, and recent translational studies addressing IMC. The available evidence on immunological mechanisms, predictive biomarkers, clinical presentation, diagnostic algorithms, and treatment options was critically synthesized to outline a structured and multidisciplinary management approach. Results: IMC is driven by dysregulated immune activation, cytokine release, and alterations in gut microbiota. Incidence and severity vary according to ICI class, combination regimens, tumor type, and patient-related factors. Diagnosis requires exclusion of infectious causes, laboratory assessment, and endoscopic and histologic evaluation with CTCAE-based severity grading. Corticosteroids remain the cornerstone of first-line therapy, while infliximab and vedolizumab are effective in steroid-refractory cases. Emerging therapies, including JAK inhibitors and FMT, have shown promising results in refractory disease. Conclusions: IMC is a complex and potentially severe complication of ICI therapy that necessitates early recognition, accurate grading, and individualized, multidisciplinary management. Severity-guided treatment, timely escalation to biologics, and careful balancing of immunosuppression with antitumor efficacy are essential for optimal outcomes. Future research should focus on biomarker validation, microbiome-targeted therapies, and prospective trials to refine therapeutic algorithms and define the optimal role and timing of FMT in clinical practice.