Aleksandra Pastornački

Dr. Aleksandra Pastornački


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

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

Representative Publications

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13 June 2024 in Metabolites
Verified
Journal Article
Open access
PDF file
VAVanja Andric
Vanja Andric
JBJasmina Boban
Jasmina Boban
DMDaniela Maric
Daniela Maric
DKDusko Kozic
Dusko Kozic
SBSnezana Brkic
Snezana Brkic
APAleksandra Pastornački
Aleksandra Pastornački
With people living with HIV (PLWH) reaching the senium, the importance of aging-related comorbidities such as metabolic syndrome (MS) becomes increasingly important. This study aimed to determine the additive effect of MS on brain atrophy in PLWH. This prospective study included 43 PLWH, average age of 43.02 ± 10.93 years, and 24 healthy controls, average age of 36.87 ± 8.89 years. PLWH were divided into two subgroups: without MS and with MS, according to NCEP ATP III criteria. All patients underwent brain magnetic resonance imaging (MRI) on a 3T clinical scanner with MR volumetry, used for defining volumes of cerebrospinal fluid (CSF) spaces and white and grey matter structures, including basal ganglia. A Student’s t-test was used to determine differences in brain volumes between subject subgroups. The binary classification was performed to determine the sensitivity and specificity of volumetry findings and cut-off values. Statistical significance was set at p < 0.05. PLWH presented with significantly lower volumes of gray matter, putamen, thalamus, globus pallidus, and nc. accumbens compared to healthy controls; cut-off values were: for gray matter 738.130 cm3, putamen 8.535 cm3, thalamus 11.895 cm3, globus pallidus 2.252 cm3, and nc. accumbens 0.715 cm3. The volumes of CSF and left lateral ventricles were found to be higher in PLWH with MS compared to those without MS, where, with a specificity of 0.310 and sensitivity of 0.714, it can be assumed that PLWH with a CSF volume exceeding 212.83 cm3 are likely to also have MS. This suggests that PLWH with metabolic syndrome may exhibit increased CSF volume above 212.83 cm3 as a consequence of brain atrophy. There seems to be an important connection between MS and brain volume reduction in PLWH with MS, which may add to the accurate identification of persons at risk of developing HIV-associated cognitive impairment.

8 June 2026 in Medicina
Verified
Journal Article
Open access
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STSlavica Tomić
Slavica Tomić
APAleksandra Pastornački
Aleksandra Pastornački
MDMaja Drljača
Maja Drljača
JGJelena Glogovac
Jelena Glogovac
VAVanja Andric
Vanja Andric
SBSnežana Brkić
Snežana Brkić
Background and Objectives: Myalgic encephalomyelitis/chronic fatigue syndrome (ME/CFS) is a complex disorder characterized by persistent or relapsing fatigue lasting at least six months, not alleviated by rest and not previously present. It is accompanied by post-exertional symptom exacerbation and non-restorative sleep. Fatigue is often disabling and reduces daily activity by more than 50%. This study aimed to evaluate the long-term frequency of somatic and psychiatric disorders in women previously diagnosed with ME/CFS and to describe the long-term clinical course, laboratory findings, and fatigue-related changes during a 16-year follow-up period. Materials and Methods: Sixteen years ago, 40 women diagnosed with ME/CFS according to then-current CDC criteria were enrolled at the Clinic for Infectious Diseases and the Center for Laboratory Medicine, University Clinical Center of Vojvodina. All participants provided informed consent. After 16 years, 20 women agreed to follow-up evaluation. At both time points, participants underwent structured questionnaires, clinical examination, psychological assessment, and comprehensive laboratory testing, including hematological, biochemical, endocrinological, and virological analyses. Fatigue severity was assessed using the FibroFatigue Scale (FFS) and the Multidimensional Assessment of Fatigue (MAF) scale. Results: During follow-up, 15% of participants were diagnosed with rheumatoid arthritis, 10% with cervical or breast cancer, 5% experienced premature myocardial infarction, 5% developed bronchial asthma, and 20% were diagnosed with clinical depression. Progression of ME/CFS was observed in 15%, while 5% reported infertility. Additionally, 15% developed arterial hypertension. Only 15% of participants did not report symptom worsening or new diagnoses. Conclusions: Over the 16-year follow-up, 85% of women with ME/CFS developed significant somatic or psychiatric conditions. These findings suggest that women diagnosed with ME/CFS may experience substantial long-term somatic and psychiatric disease burden, supporting the need for continued clinical monitoring and individualized follow-up.

15 August 2026 in Medicina
Verified
Journal Article
Open access
PDF file
MPMaria Pete
Maria Pete
DLDajana Lendak
Dajana Lendak
NKNadica Dimitrije Kovačević
Nadica Dimitrije Kovačević
APAleksandra Pastornački
Aleksandra Pastornački
MMMilica Milovac
Milica Milovac
VPvedrana petric
vedrana petric
Background and Objectives: Oral antiviral agents nirmatrelvir/ritonavir (NMV/r) and molnupiravir are recommended for the early treatment of non-hospitalized adults with COVID-19 who are at increased risk of disease progression. Real-world comparative data on these two agents remain limited. The aim of this study was to evaluate the efficacy and safety of NMV/r and molnupiravir in non-hospitalized patients with COVID-19. Materials and Methods: We conducted a retrospective, single-center study with a sample size of 122 initially non-hospitalized adults with confirmed SARS-CoV-2 infection treated at the Clinic for Infectious Diseases, University Clinical Center of Vojvodina (UCCV), Novi Sad, Serbia, during 2022. Patients were treated within the first five days of symptom onset with either NMV/r (n = 48) or molnupiravir (n = 74) for five days. Demographic characteristics, clinical presentation, comorbidities, vaccination status, laboratory parameters at baseline and on day 3, chest radiography findings, hospitalization, and mortality were analyzed. Statistical analysis was performed using the Statistical Package for the Social Sciences (SPSS), version 21 (IBM Corp., Armonk, NY, USA). Results: The groups did not differ significantly in age, sex, vaccination status, or vaccine type. Between baseline and day 3, the increase in lymphocyte count (p < 0.001) was significantly greater in the molnupiravir group. Chest radiography showed no significant between-group differences. Overall, 6 patients (4.9%) were hospitalized, with no significant difference between antiviral agents (p = 1.000), and no deaths occurred. Among patient-reported symptoms effects, the incidence of dysgeusia was significantly higher in patients treated with NMV/r (p = 0.001). Conclusions: Both antivirals showed similarly low progression, hospitalization, and mortality rates.