Laszlo-Istvan Baba

Dr. Laszlo-Istvan Baba

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Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

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

Representative Publications

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31 July 2019 in Molecules
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OPOrsolya Péterfi
Orsolya Péterfi
FBFrancisc Boda
Francisc Boda
Szabo Zoltan-IstvanSzabo Zoltan-Istvan
Szabo Zoltan-Istvan
EFElek Ferencz
Elek Ferencz
LBLaszlo-Istvan Baba
Laszlo-Istvan Baba
Hypertension is considered a major public health issue due to its high prevalence and subsequent risk of cardiovascular and kidney diseases. Thus, the search for new antihypertensive compounds remains of great interest. Snake venoms provide an abundant source of lead molecules that affect the cardiovascular system, which makes them prominent from a pharmaceutical perspective. Such snake venom components include bradykinin potentiating peptides (proline-rich oligopeptides), natriuretic peptides, phospholipases A2, serine-proteases and vascular endothelial growth factors. Some heparin binding hypotensive factors, three-finger toxins and 5′ nucleotidases can also exert blood pressure lowering activity. Great advances have been made during the last decade regarding the understanding of the mechanism of action of these hypotensive proteins. Bradykinin potentiating peptides exert their action primarily by inhibiting the angiotensin-converting enzyme and increasing the effect of endogenous bradykinin. Snake venom phospholipases A2 are capable of reducing blood pressure through the production of arachidonic acid, a precursor of cyclooxygenase metabolites (prostaglandins or prostacyclin). Other snake venom proteins mimic the effects of endogenous kallikrein, natriuretic peptides or vascular endothelial growth factors. The aim of this work was to review the current state of knowledge regarding snake venom components with potential antihypertensive activity and their mechanisms of action.

17 May 2019 in Medicina
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LBLaszlo-Istvan Baba
Laszlo-Istvan Baba
MKMelinda Kolcsar
Melinda Kolcsar
IKImre Zoltán Kun
Imre Zoltán Kun
ZUZsófia Ulakcsai
Zsófia Ulakcsai
FBFruzsina Bagaméry
Fruzsina Bagaméry
Zsolt GállZsolt Gáll
Zsolt Gáll
Background and Objectives: The use of the dopamine-partial agonist subclass (also termed dopamine stabilizers) of atypical antipsychotics for the treatment of negative schizophrenia symptoms and some mood disorders has increased recently. Similar to other second-generation antipsychotics (SGAs), aripiprazole (ARI) and cariprazine (CAR) also influence food intake, but the peripheral effects of these drugs on adipose–tissue homeostasis, including adipokine secretion as well as lipo- and adipogenesis, are not fully elucidated. In this study, we explored the adipocyte-related mechanisms induced by second-generation antipsychotics (SGAs), leading to changes in peripheral signals involved in energy homeostasis. Materials and Methods: CAR, a new SGA, was compared with ARI and olanzapine (OLA), using cell cultures to study adipogenesis, and the expression levels of peroxisome proliferator-activated receptor-γ (PPAR-γ) was measured in adipocytes derived from mouse fibroblasts, by western blotting on days 7, 14, and 21 postinduction. The triglyceride (TG) content of the cells was also evaluated on day 15 using Oil Red O staining, and the adiponectin (AN) content in the cell culture supernatants was quantified on days 7 and 15 by enzyme-linked immunosorbent assay. Cells were treated with two concentrations of ARI (0.5 and 20 µg/mL), OLA (1 and 20 µg/mL), and CAR (0.1 and 2 µg/mL). Results: Both concentrations of ARI and OLA, as well as the lower concentration of CAR, significantly increased the TG contents. The AN levels in the supernatants were significantly increased by the higher concentration of ARI on days 7 and 15 (p < 0.05). Although PPAR-γ levels were not significantly affected by ARI and OLA, the lower concentration of CAR induced a significant time-dependent decrease in PPAR-γ expression (p < 0.05). Conclusions: The in vitro adipogenesis considered from TG accumulation, AN secretion, and PPAR-γ expression was differently influenced by ARI, CAR, and OLA. Understanding the adipocyte-related mechanisms of antipsychotics could contribute to understanding their weight-influencing effect.

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KKKrisztina Kelemen
Krisztina Kelemen
KOKároly Orbán-Kis
Károly Orbán-Kis
ÁSÁdám Szentes
Ádám Szentes
ZNZsolt András Nagy
Zsolt András Nagy
HKHanga Kelemen
Hanga Kelemen
TSTibor Szilagyi
Tibor Szilagyi
Calcium-binding proteins (CaBPs) are known to modulate neuronal excitability and calcium signaling, and they may play a role in the imbalances of excitation and inhibition of temporal lobe epilepsy (TLE). While parvalbumin and calretinin are well-characterized CaBPs, N-Terminal EF-Hand Calcium-Binding Protein 1 (NECAB1) remains understudied in epilepsy, despite its association with neurodegenerative conditions. In this study, we used fluorescent immunolabeling to determine the distribution of NECAB1, as well as its co-expression with parvalbumin and calretinin, in brain regions associated with the epileptic circuitry using a kainic acid-induced TLE model. Additionally, we examined the impact of levetiracetam and brivaracetam on NECAB1 expression. In our study, NECAB1-positive cells were prominently localized to the paraventricular nucleus of the thalamus (PVT), endopiriform nucleus (EPN), and amygdala in healthy brain regions involved in epileptic circuitry. A NECAB1–calretinin co-expressing subpopulation was detected in the amygdala, PVT, and hippocampus but was nearly absent in the EPN. In chronic epilepsy, NECAB1 expression was significantly upregulated in the PVT and bilaterally in the amygdala. These findings suggest that NECAB1 upregulation may compensate for epileptic hyperexcitability, potentially contributing to circuit remodeling via thalamocortical regulation and interneuron diversity. Levetiracetam and brivaracetam treatments partially reduced the NECAB1 density increase in TLE, indicating a modulatory effect on NECAB1 expression.

28 October 2020 in Scientia Pharmaceutica
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LBLaszlo-Istvan Baba
Laszlo-Istvan Baba
Zsolt GállZsolt Gáll
Zsolt Gáll
MKMelinda Kolcsar
Melinda Kolcsar
PZPap Zsuzsanna
Pap Zsuzsanna
Zoltan VargaZoltan Varga
Zoltan Varga
IKImre-Zoltán Kun
Imre-Zoltán Kun
Cariprazine (Car) is a recently approved second generation antipsychotic (SGA) with unique pharmacodynamic profile, being a partial agonist at both dopamine D2/3 receptor subtypes, with almost 10 times greater affinity towards D3. SGAs are known to increase body weight, alter serum lipids, and stimulate adipogenesis but so far, limited information about the adverse effects is available with this drug. In order to study this new SGA with such a unique mechanism of action, we compared Car to substances that are considered references and are well characterized: olanzapine (Ola) and aripiprazole (Ari). We studied the effects on body weight and also assessed the adipogenesis in rats. The drugs were self-administered in two different doses to female, adult, Wistar rats for six weeks. Weekly body weight change, vacuole size of adipocytes, Sterol Regulatory Element Binding Protein-1 (SREBP-1) and Uncoupling Protein-1 (UCP-1) expression were measured from the visceral adipose tissue (AT). The adipocyte’s vacuole size, and UCP-1 expression were increased while body weight gain was diminished by Car. by increasing UCP-1 might stimulate the thermogenesis, that could potentially explain the weight gain lowering effect through enhanced lipolysis.

25 April 2025 in Health Economics Review
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IBIldiko Aliz Bradacs
Ildiko Aliz Bradacs
LBLaszlo-Istvan Baba
Laszlo-Istvan Baba
LLLaszlo Lorenzovici
Laszlo Lorenzovici
APAndreea Mihaela Precup
Andreea Mihaela Precup
SRSzabolcs Farkas- Ráduly
Szabolcs Farkas- Ráduly
GIGener Ismail
Gener Ismail
Background: Chronic kidney disease or chronic renal failure is a progressive condition defined as abnormalities of kidney structure or function, present for longer than 3 months. It is estimated to affect more than 10% of the general population worldwide. Management of CKD represents an especially large burden for the health systems of low- and middle-income countries, and it has been recognized as a leading public health problem. Previous research articles reported an age-adjusted prevalence of 7.6% for Romania, but the hospital costs generated by CKD are unknown. The present research article aimed to measure the hospital costs and one-year national healthcare budget impact of CKD, excepting the chronic care costs of RRTs. Methods: In this retrospective study we reviewed the electronic health records of 4 University, 3 County and 5 City hospitals from 1st of January 2019 to 31st of December 2019 in order to calculate costs related to hospitalization due to chronic kidney disease. Inclusion criteria were defined as: CKD-related diagnostic codes or dialysis-related procedures in medical cases (without surgical interventions). KDIGO severity grades 1-5 were considered, including dialysis costs. The costs generated by the chronic care of RRTs were not considered here. Hospitalization cost calculation was based on hospital controlling methodology including direct, indirect and overhead costs. For the national-level burden study, we analyzed the health claim records of all public and private hospitals for 2019. Results: In 2019 a total number of 229 276 cases reported chronic kidney disease in Romania. The average hospital costs per patient episode was €917.1, with significantly higher costs in cases with complications or higher severity grades. The total hospitalization cost-related budget impact in 2019 was €210 million. Conclusions: The high hospitalization costs of CKD (representing 2.6% of the NHIH budget, not considering the funds for sick leave) cause major impact on the national health payer`s budget. Preventive strategies, early diagnosis and management as well as health education measures could act as means of mitigation. Our results should warn the public health policy decision makers about the importance of this disease.

11 March 2026 in Dentistry Journal
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Szidonia Krisztina VeressSzidonia Krisztina Veress
Szidonia Krisztina Veress
LBLaszlo-Istvan Baba
Laszlo-Istvan Baba
ABAttila Bitai
Attila Bitai
BBBálint Bögözi
Bálint Bögözi
Bernadette Evelyn Kerekes-MatheBernadette Evelyn Kerekes-Mathe
Bernadette Evelyn Kerekes-Mathe
MSMelinda Székely
Melinda Székely
Background/Objectives: To make a dental office more environmentally conscious, it is essential to use eco-friendly disinfectants without compromising patient safety. Our aim was to examine and compare the effectiveness of the commonly used conventional disinfectants in Romania with the effectiveness of available eco-friendly disinfectants. Methods: Two traditional (Gigasept, Zeta 1 Ultra), and two eco-friendly (IDactiv, Sekusept Aktiv) disinfectants and an eco-friendly (gigazyme) cleaning agent were compared. For a thorough evaluation, minimal inhibitory and bactericidal concentration (MIC/MBC) tests were conducted, along with a Bradford assay to measure the concentration of residual proteins on instruments contaminated by controlled contamination and dental office use after disinfection. Results: During the MIC test, with the exception of Gigazyme®, which is an enzymatic cleaner, all of the tested disinfectants were effective in the case of the bacterial reference strains used at the concentration prescribed by the manufacturers. After disinfection, the amount of protein remaining on the dental instruments did not exceed the maximum concentration according to the ISO 15883-5:2005 protocol, and the protein removal efficiency was between 96.04% and 99.03% for all disinfectants. In the MIC/MBC test, the peracetic acid-based Sekusept Aktiv was the most effective, while Gigazyme® and BossKlein IDactiv® showed the highest protein removal efficiency. Conclusions: The tested eco-friendly disinfectants meet the necessary performance criteria and thus offer a sustainable alternative to traditional disinfectants.