Ahmet Unlu

Dr. Ahmet Unlu

orcid

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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1 January 2016 in Journal of Oncological Sciences
Verified
Journal Article
Open access
AUAhmet Unlu
Ahmet Unlu
OKOnder Kirca
Onder Kirca
MOMustafa Ozdogan
Mustafa Ozdogan
ENErdinç Nayır
Erdinç Nayır
Vitamin C (ascorbic acid, ascorbate) is a basic compound that is of great importance with its role in various enzymatic reactions including the synthesis of collagen, as well as with its redox functions. Vitamin C has become the center of interest in cancer studies, in consequence of the facts that connective tissue changes and vitamin C deficiency were first alleged to be associated with cancer in the 1950s; and that high doses of vitamin C was asserted to be cytotoxic for cancer cells, later on. The results of the first study carried out in the 1970s were promising; but afterwards, the studies were ascertained to be faulty. Despite the positive results achieved from some laboratory and animal experiments, randomized clinical trials did not verify those findings, and no clear benefit of vitamin C for cancer treatment could be demonstrated. As for studies, where its use in combination with other cancer treatment regimens was assessed, conflicting results were obtained. Although intake of high doses of vitamin C is alleged to be harmless, based on that it is in the group of water soluble vitamins and is not stored in the body, there are many side effects and drug interactions reported in the literature. For now, it is better to abstain from this treatment, until the benefit of the treatment (if any) is clearly demonstrated, considering the potential side effects and interactions.

1 August 2018 in Journal of Oncological Sciences
Verified
Journal Article
Open access
AUAhmet Unlu
Ahmet Unlu
OKOnder Kirca
Onder Kirca
MOMustafa Ozdogan
Mustafa Ozdogan
Reflexology is a complementary alternative medicine procedure carried out by applying pressure to specific points located mostly in the feet (sometimes in the hands), with intent to provide relief from certain symptoms. In reflexology thought to have a history of approximately 5000 years, it is believed that specific points in the feet are linked to certain organs and systems in the body, through energy channels, and that applying pressure to these points provides relief in the relevant organ and system, as well. However, no evidence has yet to be found that proves the alleged connections and mechanisms of reflexology. Indeed, studies carried out up to date were focused on the symptomatic effects of reflexology, rather than such links and mechanisms. In some studies, certain positive results have been obtained especially in terms of pain and anxiety. However, these studies were methodologically incomplete, as well, due to challenges such as the difficulty in creating blinding and placebo effect. As a result, currently we have no reliable evidence about the use of reflexology in any clinical situation. Nevertheless, when it is considered to be a safe procedure in terms of unwanted effects, it can be provided to patients as a supportive care service.

24 November 2024 in Diagnostics
Verified
Journal Article
Open access
PDF file
Asim Armagan AydinAsim Armagan Aydin
Asim Armagan Aydin
RYRamazan Oğuz Yüceer
Ramazan Oğuz Yüceer
ŞYŞenay Yıldırım
Şenay Yıldırım
AUAhmet Unlu
Ahmet Unlu
EKErkan Kayikcioglu
Erkan Kayikcioglu
MKMurat KOÇER
Murat KOÇER
Background: This study aimed to assess the prognostic and predictive implications of CD47, CD68, and CD163, biomarkers of tumor-associated macrophages (TAMs), on the treatment efficacy and clinical outcomes of nasopharyngeal carcinoma (NPC). Additionally, the prognostic value of TAM-related indices, such as the monocyte-to-lymphocyte ratio (MLR) and monocyte-to-albumin ratio (MAR), was evaluated. Methods: A retrospective cohort of 54 patients with locally advanced or oligometastatic NPC treated with concurrent chemoradiotherapy (CCRT), with or without induction chemotherapy, was analyzed. Patients were categorized based on the cumulative expression scores for CD47, CD68, and CD163: negative/low (0–3 points) and high (4–6 points). MLR and MAR were also stratified as low MLR (<0.545) vs. high MLR (≥0.545) and low MAR (<16.145) vs. high MAR (≥16.145). The primary endpoint was overall survival (OS). Results: High CD47, CD68, and CD163 expression levels were correlated with advanced clinical stage, reduced CCRT response, and elevated MLR and MAR. These TAM biomarkers were linearly correlated with each other and with established risk factors such as advanced age and elevated EBV-DNA levels. Kaplan–Meier analysis revealed that patients with low TAM expression had significantly longer OS and progression-free survival (PFS) than those with high TAM expression. Multivariate analysis identified high CD163, MLR, and MAR levels as independent adverse prognostic factors for OS. Elevated MLR is an independent risk factor for both OS and PFS in patients with NPC. Conclusions: CD47, CD68, and CD163 are significant prognostic markers in NPC, with higher levels being associated with poorer OS and PFS. Elevated MLR and MAR values also predict worse outcomes, underscoring their value as prognostic tools. CD163 and MLR are particularly strong predictors, highlighting the crucial role of TAMs in NPC management and suggesting that CD163 is a potential therapeutic target within the immune checkpoint pathway.

24 September 2025 in Current Oncology
Verified
Journal Article
Open access
PDF file
AEAli Erhan Eren
Ali Erhan Eren
Asim Armagan AydinAsim Armagan Aydin
Asim Armagan Aydin
EAEren Erdi Aksaray
Eren Erdi Aksaray
ADArda Durak
Arda Durak
AUAhmet Unlu
Ahmet Unlu
MYMustafa Yıldız
Mustafa Yıldız
Background: Urothelial carcinoma of the bladder (UCB) demonstrates considerable heterogeneity, with markedly varying outcomes between non–muscle-invasive bladder cancer (NMIBC) and muscle-invasive bladder cancer (MIBC). The pan-immune-inflammation value (PIV), derived from routine hematological parameters, has emerged as a novel biomarker reflecting systemic inflammation and immune dysregulation. This pilot, exploratory analysis evaluated the prognostic relevance of the PIV in UCB and contextualized PIV against other inflammation-based indices. Methods: We retrospectively analyzed 119 patients with histologically confirmed UCB who were treated between 2019 and 2024. PIV was calculated as (neutrophils × platelets × monocytes) ÷ lymphocytes. Additional indices included the NLR, SII, SIRI, and PLR. Progression-free survival (PFS) and overall survival (OS) were estimated using Kaplan–Meier analysis, and prognostic factors were assessed using Cox regression. Results: Among 119 patients (median age, 72 years; 88% male), 68 were diagnosed with NMIBC and 51 with MIBC. Elevated PIV levels were significantly associated with NMIBC progression to MIBC (p = 0.028) and strongly correlated with NLR, SII, SIRI, and PLR. Patients with high PIV exhibited shorter OS (24 vs. 45 months) and PFS (20 vs. 35 months) than those with low patients (p < 0.001). Although the prognostic value was evident in the univariate analyses, PIV did not retain significance in multivariate models. Conclusion: Elevated PIV levels predict adverse survival outcomes and progression in UCB, underscoring its potential as a cost-effective and accessible biomarker for risk stratification. Prospective validation in larger cohorts is warranted to confirm its role in personalized patient management.

17 May 2017 in Akdeniz Medical Journal
Verified
Journal Article
Closed access
AUAhmet Unlu
Ahmet Unlu
ÖKÖnder Kirca
Önder Kirca
ODOben Duman
Oben Duman
MÖMustafa Özdoğan
Mustafa Özdoğan

17 December 2025 in Medicina
Verified
Journal Article
Open access
PDF file
AUAhmet Unlu
Ahmet Unlu
Asim Armagan AydinAsim Armagan Aydin
Asim Armagan Aydin
BOBanu Ozturk
Banu Ozturk
CTCezmi Cagri Turk
Cezmi Cagri Turk
MYMustafa Yıldız
Mustafa Yıldız
Background and Objectives: Grade 4 adult-type diffuse gliomas remain the most aggressive primary central nervous system malignancies, with limited prognostic tools beyond molecular classification. This study introduces the HALLMOUNT score, a multidimensional prognostic index integrating hematologic, biochemical, and clinical parameters to capture the interplay between tumor biology and systemic host response. Materials and Methods: A total of 227 patients with histologically confirmed grade 4 adult-type diffuse glioma were retrospectively analyzed. The HALLMOUNT score incorporated nine pretreatment variables: hemoglobin, albumin, lactate dehydrogenase (LDH), lymphocyte, monocyte, Eastern Cooperative Oncology Group (ECOG) performance status, uric acid, neutrophil, and thrombocyte counts. Receiver operating characteristic (ROC) analyses determined optimal cut-offs, and Cox regression models evaluated prognostic performance for overall (OS) and progression-free survival (PFS). Results: High HALLMOUNT scores (≥2.5) were significantly associated with older age, comorbidities, poor ECOG status, isocitrate dehydrogenase (IDH)-wild phenotype, lower resection rates, and reduced treatment responses. ROC analysis showed predictive accuracy comparable to CAR and PIV (AUC = 0.650). High scores independently predicted inferior OS (HR = 2.78, p < 0.001) and PFS (HR = 2.76, p < 0.001). Conclusions: The HALLMOUNT score provides a simple, cost-effective, and biologically grounded biomarker reflecting both tumor aggressiveness and host vulnerability. It enables refined risk stratification, supports individualized therapeutic planning, and warrants prospective validation in molecularly defined and multicenter cohorts.