Nataša Lisica-Šikić

Dr. Nataša Lisica-Šikić


Research Focus & Metrics

Academic Career Length

4Years (2023-Present)

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

Representative Publications

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20 November 2025 in Nutrients
Verified
Journal Article
Open access
PDF file
MSMarijana Marek Sarić
Marijana Marek Sarić
Tamara SorićTamara Sorić
Tamara Sorić
ŽKŽeljka Juko Kasap
Željka Juko Kasap
NLNataša Lisica-Šikić
Nataša Lisica-Šikić
MMMladen Mavar
Mladen Mavar
ASAna Sarić
Ana Sarić
Magnesium (Mg2+) is the fourth most abundant cation in the human body and a critical cofactor in hundreds of enzymatic reactions that regulate energy metabolism, neuromuscular function, cardiovascular health, bone integrity, immune defense, and psychological well-being. Despite its essential roles, magnesium deficiency remains common worldwide, driven by inadequate dietary intake, chronic diseases, medication use, and lifestyle factors. Low magnesium status is associated with hypertension, type 2 diabetes, osteoporosis, migraines, depression, and chronic inflammation, whereas sufficient intake supports cardiometabolic resilience, skeletal strength, neurological stability, and healthy aging. This review synthesizes current evidence on magnesium metabolism, physiological functions, and the health consequences of deficiency, and it summarizes global status with attention to biomarker limitations, widespread suboptimal intake, and key demographic and lifestyle determinants. It also discusses dietary sources, supplementation, and innovative approaches such as food fortification, personalized nutrition, and improved diagnostic strategies. The evidence highlights magnesium as a modifiable factor with potential to lessen the burden of chronic diseases. Recognizing magnesium deficiency as a pressing but underappreciated public health issue, this article underscores the need for integrated strategies to optimize magnesium balance at both individual and population levels.

13 July 2025 in Medicina
Verified
Journal Article
Open access
PDF file
MSMarijana Marek Sarić
Marijana Marek Sarić
Tamara SorićTamara Sorić
Tamara Sorić
ASAna Sarić
Ana Sarić
EMEmili Marušić
Emili Marušić
MČMiran Čoklo
Miran Čoklo
NLNataša Lisica-Šikić
Nataša Lisica-Šikić
Endometriosis is a chronic, estrogen-dependent inflammatory condition that affects multiple organ systems and significantly impairs the quality of life in women of reproductive age. While conventional hormonal therapies may alleviate symptoms of endometriosis, they are also frequently associated with intolerable side effects. As a result, there is growing interest in complementary, non-invasive strategies to support long-term disease management. This review explores the potential of plant-based diets and personalized nutrition as adjunctive approaches in endometriosis care. Plant-based dietary patterns, which are rich in antioxidants, phytochemicals, dietary fiber, and essential micronutrients, have been shown to reduce systemic inflammation, modulate estrogen activity, and alleviate pelvic pain. Additionally, the use of medicinal plants, such as curcumin and ginger, has demonstrated anti-inflammatory and anti-proliferative effects in preclinical studies. Moreover, identifying and addressing individual food sensitivities, particularly to gluten, dairy, or fermentable oligosaccharides, disaccharides, monosaccharides, and polyols, may improve gastrointestinal and inflammatory symptoms in susceptible individuals. Future research should focus on high-quality clinical trials and integrative care models to evaluate the long-term efficacy, safety, and sustainability of these individualized nutritional interventions in the holistic management of endometriosis.

23 September 2023 in Cancers
Verified
Journal Article
Open access
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NLNataša Lisica-Šikić
Nataša Lisica-Šikić
BMBranka Petrić Miše
Branka Petrić Miše
STSnježana Tomić
Snježana Tomić
GSGiulia Spagnol
Giulia Spagnol
LMLuka Matak
Luka Matak
GSGiulio Spagnoli
Giulio Spagnoli
Ovarian cancer has a dismal prognosis. Standard treatment following surgery relies on platinum-based chemotherapy. However, sizeable percentages of patients are unresponsive. Identification of markers predicting the response to chemotherapy might help select eligible patients and spare non-responding patients from treatment-associated toxicity. Cancer/testis antigens (CTAs) are expressed by healthy germ cells and malignant cells of diverse histological origin. This expression profile identifies them as attractive targets for cancer immunotherapies. We analyzed the correlations between expression of MAGE-A10 and New York esophageal-1 cancer (NY-ESO-1) CTAs at the protein level and the effectiveness of platinum-based chemotherapy in patients with advanced-stage high-grade serous ovarian carcinoma (HGSOC). MAGE-A10 and NY-ESO-1 protein expression was analyzed by immunohistochemistry (IHC) in formalin-fixed, paraffin-embedded samples from 93 patients with advanced-stage HGSOC treated at our institutions between January 1996 and December 2013. The correlation between the expression of these markers and response to platinum-based chemotherapy, evaluated according to RECIST 1.1 criteria and platinum sensitivity, measured as platinum-free interval (PFI), progression free (PFS), and overall survival (OS) was explored. The MAGE-A10 protein expression predicted unresponsiveness to platinum-based chemotherapy (p = 0.005), poor platinum sensitivity (p < 0.001), poor PFS (p < 0.001), and OS (p < 0.001). Multivariate analysis identified MAGE-A10 protein expression as an independent predictor of poor platinum sensitivity (p = 0.005) and shorter OS (p < 0.001). Instead, no correlation was observed between the NY-ESO-1 protein expression and response to platinum-based chemotherapy (p = 0.832), platinum sensitivity (p = 0.168), PFS (p = 0.126), and OS (p = 0.335). The MAGE-A10 protein expression reliably identified advanced-stage HGSOC unresponsive to platinum-based chemotherapy. Targeted immunotherapy could represent an important alternative therapeutic option in these cancers.

15 April 2024 in Infektološki glasnik
Verified
Journal Article
Open access
PDF file
INIvica Nekić
Ivica Nekić
AMAlan Medić
Alan Medić
DPDinko Puntarić
Dinko Puntarić
TBTatjana Nemeth Blažić
Tatjana Nemeth Blažić
NLNataša Lisica-Šikić
Nataša Lisica-Šikić
BDBoris Dželalija
Boris Dželalija
We present a retrospective research of HPV testing of tissue samples, by the polymerase chain reaction method (PCR), in patients that underwent surgery due to squamous cell carcinoma of the oral cavity, oropharynx or larynx in Zadar General Hospital in the period from 2007 to 2016.Out of 99 patients included in this study, 89 (89,9%) were men with median age of 62.3 years and ten (10,1 %) were women with median age of 66 years. According to the cancer site, the percentage of HPV positive carcinoma tissue samples of larynx carcinoma, oral cavity carcinoma and oropharyngeal carcinoma were 25.8%, 26.9% and 18,2 %, respectively. According to the HPV genotype, among all cancer sites, in 60% (n=15) HPV 16 were detected, and in 40% mixed HPV infection, that is, in 32% (n=8) HPV 16, 26, 34, 53 and in 8% (n=2) HPV 16, 18, 26, 34, 53.The presented research results support the need for stronger public health promotion of vaccines against HPV, and the selection of the best strategy for the implementation of vaccination to prevent cancer of the larynx, oropharynx and oral cavity among men.

Verified
Journal Article
Open access
PDF file
MSMarijana Marek Sarić
Marijana Marek Sarić
NLNataša Lisica-Šikić
Nataša Lisica-Šikić
Tamara SorićTamara Sorić
Tamara Sorić
ASAna Sarić
Ana Sarić
AIAndrija Ivanišin
Andrija Ivanišin
Mirta MilićMirta Milić
Mirta Milić
Insulin resistance (IR) is traditionally viewed within the context of type 2 diabetes. However, it increasingly appears to represent a broader systemic metabolic risk state with potential relevance for carcinogenesis. Chronic hyperinsulinemia can activate insulin-like growth factor-1-dependent pathways, including phosphoinositide 3-kinase/protein kinase B/mechanistic target of rapamycin and mitogen-activated protein kinase signaling, promoting cellular proliferation while limiting apoptosis. At the same time, IR is closely linked to oxidative stress, chronic low-grade inflammation, and epigenetic alterations, together shaping a tumor-promoting microenvironment. Epidemiological studies report consistent associations between IR and increased cancer risk, particularly for endometrial, liver, and colorectal cancers. Yet causality remains uncertain and likely varies by tumor type. Notably, metabolic dysfunction may also occur in individuals with normal body mass index (BMI), underscoring the limitations of BMI-based risk assessment. Unlike previous reviews that primarily focused on individual mechanisms or epidemiological associations, this review examines IR as a systemic metabolic risk state by integrating molecular, epidemiological, biomarker-based, and prevention-oriented perspectives. Particular emphasis is placed on strategies for earlier risk identification using integrated biomarker approaches, including fasting glucose, homeostatic model assessment of insulin resistance, triglyceride-to-high-density lipoprotein ratio, high-sensitivity C-reactive protein, and insulin-like growth factor-1. Emerging tools such as continuous glucose monitoring and hepatokine profiling may further refine risk detection. Sustained lifestyle modification—diet, physical activity, sleep, and stress regulation—remains central to prevention. Pharmacological therapies, including glucagon-like peptide-1 receptor agonists and dual incretin agents, offer additional metabolic benefits, although their long-term impact on cancer risk is still unclear. Therefore, IR is best understood not as an isolated risk factor, but as a systemic metabolic risk state that may influence cancer development, with implications for prevention and early risk stratification.

24 August 2023 in Preprints.org
Verified
Preprint
Open access
PDF file
NLNataša Lisica-Šikić
Nataša Lisica-Šikić
BMBranka Petrić Miše
Branka Petrić Miše
STSnježana Tomić
Snježana Tomić
GSGiulia Spagnol
Giulia Spagnol
LMLuka Matak
Luka Matak
GSGiulio Spagnoli
Giulio Spagnoli
: Ovarian cancer has a dismal prognosis. Standard treatment following surgery relies on platinum-based chemotherapy. However, sizeable percentages of patients are unresponsive. Identification of markers predicting response to chemotherapy might help select eligible patients while sparing unresponsive ones treatment-associated toxicity. Cancer/testis antigens (CTA) are expressed by healthy germ cells and malignant cells of diverse histological origin. This expression profile identifies them as attractive targets of cancer immunotherapies. We analyzed correlations between expression of MAGE-A10 and New York esophageal-1 cancer (NY-ESO-1) CTAs at protein level and effectiveness of platinum-based chemotherapy in patients with advanced-stage high-grade serous ovarian carcinoma (HGSOC). MAGE-A10 and NY-ESO-1 protein expression was analyzed by immunohistochemistry (IHC) in formalin-fixed, paraffin-embedded samples from 93 patients with advanced-stage HGSOC treated at our institutions between January 1996 and December 2013. Correlation between expression of these markers and response to platinum-based chemotherapy, evaluated according to RECIST 1.1 criteria, platinum sensitivity, measured as platinum free interval (PFI), progression free (PFS) and overall survival (OS) was explored. MAGE-A10 protein expression predicts unresponsiveness to platinum-based chemotherapy (p=0.005), poor platinum sensitivity (p<0.001), and poor PFS (p<0.001) and OS (p<0.001). Multiva-riate analysis identifies MAGE-A10 protein expression as independent predictor of poor platinum sensitivity (p=0.005) and shorter OS (p<0.001). Instead, no correlation was observed between NY-ESO-1 protein expression and response to platinum-based chemotherapy (p=0.832), platinum sensitivity (p= 0.168), PFS (p=0.126) and OS (p=0.335). MAGE-A10 protein expression reliably identifies advanced-stage HGSOC unresponsive to platinum-based chemotherapy. Targeted im-munotherapy could represent an important alternative therapeutic option in these cancers.