Huseyin Avni Uydu

Prof. Huseyin Avni Uydu

orcid

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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13 June 2024 in Nutrients
Verified
Journal Article
Open access
PDF file
EYErtugrul Yigit
Ertugrul Yigit
ODOrhan Deger
Orhan Deger
KKKatip Korkmaz
Katip Korkmaz
MYMERVE HÜNER YIGIT
MERVE HÜNER YIGIT
HUHuseyin Avni Uydu
Huseyin Avni Uydu
SDSelim Demir
Selim Demir
Atherosclerosis is one of the most important causes of cardiovascular diseases. A disintegrin and metalloprotease (ADAM)10 and ADAM17 have been identified as important regulators of inflammation in recent years. Our study investigated the effect of inhibiting these enzymes with selective inhibitor and propolis on atherosclerosis. In our study, C57BL/6J mice (n = 16) were used in the control and sham groups. In contrast, ApoE-/- mice (n = 48) were used in the case, water extract of propolis (WEP), ethanolic extract of propolis (EEP), GW280264X (GW-synthetic inhibitor), and solvent (DMSO and ethanol) groups. The control group was fed a control diet, and all other groups were fed a high-cholesterol diet for 16 weeks. WEP (400 mg/kg/day), EEP (200 mg/kg/day), and GW (100 µg/kg/day) were administered intraperitoneally for the last four weeks. Animals were sacrificed, and blood, liver, aortic arch, and aortic root tissues were collected. In serum, total cholesterol (TC), triglycerides (TGs), and glucose (Glu) were measured by enzymatic colorimetric method, while interleukin-1β (IL-1β), paraoxonase-1 (PON-1), and lipoprotein-associated phospholipase-A2 (Lp-PLA2) were measured by ELISA. Tumor necrosis factor-α (TNF-α), interferon-γ (IFN-γ), myeloperoxidase (MPO), interleukin-6 (IL-6), interleukin-10 (IL-10), and interleukin-12 (IL-12) levels were measured in aortic arch by ELISA and ADAM10/17 activities were measured fluorometrically. In addition, aortic root and liver tissues were examined histopathologically and immunohistochemically (ADAM10 and sortilin primary antibody). In the WEP, EEP, and GW groups compared to the case group, TC, TG, TNF-α, IL-1β, IL-6, IL-12, PLA2, MPO, ADAM10/17 activities, plaque burden, lipid accumulation, ADAM10, and sortilin levels decreased, while IL-10 and PON-1 levels increased (p < 0.003). Our study results show that propolis can effectively reduce atherosclerosis-related inflammation and dyslipidemia through ADAM10/17 inhibition.

10 January 2025 in Life
Verified
Journal Article
Open access
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Kazım SahinKazım Sahin
Kazım Sahin
SASena Sahin Aktura
Sena Sahin Aktura
İBİlkay Bahçeci
İlkay Bahçeci
Tolga MercantepeTolga Mercantepe
Tolga Mercantepe
LTLevent TUMKAYA
Levent TUMKAYA
Zihni Acar YazıcıZihni Acar Yazıcı
Zihni Acar Yazıcı
Sepsis is a clinical condition causing tissue damage as a result of infection and an exaggerated immune response. Sepsis causes 11 million deaths annually, a third of which are associated with acute lung injury (ALI). Rapid and effective treatment is crucial to improve survival rates. Punica granatum (pomegranate) is rich in polyphenols and demonstrates strong antioxidant activity, while amifostine acts as a free radical scavenger. This study aimed to investigate the antioxidant and anti-inflammatory effects of P. granatum peel extract (PGPE) and amifostine in sepsis-related ALI. Experimental groups included Control, CLP (cecal ligation and puncture-induced sepsis), Amf (200 mg/kg amifostine, intraperitoneally), and PGPE250, and PGPE500 (250 and 500 mg/kg PGPE via oral gavage, respectively). Thiobarbituric acid reactive substances (TBARS), total thiol (TT), tumor necrosis factor-alpha (TNF-α) levels, and metalloproteinases 2 and 9 (MMP-2 and MMP-9) were assessed in the lung tissue. Biochemical analysis demonstrated that TBARS and TNF-α levels significantly decreased in both the PGPE and amifostine treatment groups compared to the CLP group, while TT levels showed notable improvement. Histopathological evaluation revealed reduced MMP-2 and MMP-9 immunopositivity in the PGPE250 and PGPE500 groups. These findings highlight the lung-protective properties of PGPE, underscoring its potential as a therapeutic agent for sepsis-induced acute lung injury.

14 December 2023 in Acta Cardiologica
Verified
Journal Article
Closed access
MAMehtap ATAK
Mehtap ATAK
HNHatice Sevim Nalkiran
Hatice Sevim Nalkiran
MBMehmet Bostan
Mehmet Bostan
HUHuseyin Avni Uydu
Huseyin Avni Uydu
Background: Controversial effect of sortilin on lipoprotein metabolism in the development of atherosclerosis reveals the need for more extensive researchObjectives: The aim of this study was to investigate the association between Sort1 gene expression and lipids, lipoprotein subfractions, and inflammation in CAD.Methods: The study population included 162 subjects with CAD and 49 healthy individuals. The Sort1 gene expression level was determined by qRT-PCR using Human Sortilin TaqMan Gene Expression Assays. Lipoprotein subclasses were analysed by the Lipoprint system. Serum levels of apolipoprotein and CRP were measured by autoanalyzer.Results: Sort1 gene expression and atherogenic subfraction (SdLDL) levels were significantly higher (p < 0.001) while atheroprotective subfraction (LbLDL) was lower in the subjects with CAD (p < 0.050). Also, increased Sort1 gene expression levels were observed in those with higher CRP values.Conclusions: Our findings reveal that the high Sort1 gene expression has a prominent linear relationship with both the atherogenic LDL phenotype and proinflammation, thereby might contribute to the occurrence of CAD.

17 December 2024 in Pharmaceuticals
Verified
Journal Article
Open access
PDF file
MYMERVE HÜNER YIGIT
MERVE HÜNER YIGIT
MAMehtap ATAK
Mehtap ATAK
EYErtugrul Yigit
Ertugrul Yigit
ZSZehra Topal Suzan
Zehra Topal Suzan
Mehmet KıvrakMehmet Kıvrak
Mehmet Kıvrak
HUHuseyin Avni Uydu
Huseyin Avni Uydu
Objective: In this study, we aimed to evaluate the potential effects of white tea (WT) in the atherosclerosis process characterized by oxidative stress, inflammation, and dyslipidemia. Methods: In our study, apolipoprotein E knockout (ApoE−/−) mice (RRID: IMSR_JAX:002052) and C57BL/6J mice (RRID: IMSR_JAX:000664) were used. In the atherosclerosis model induced by an atherogenic diet (AD), WT was administered via oral gavage at two different concentrations. The animals were sacrificed by decapitation under anesthesia, and their serum and aortic tissues were collected. Total cholesterol (TC), triglyceride (TG), interleukin (IL)-1β, IL-6, IL-10, IL-12, tumor necrosis factor-α (TNF-α), interferon-γ, myeloperoxidase, paraoxonase-1, lipoprotein-associated phospholipase A2, oxidized low-density lipoprotein (Ox-LDL), lectin-like oxidized LDL receptor (LOX-1), a disintegrin, and metalloprotease (ADAM) 10 and 17 activities were determined via colorimetric, enzyme-linked immunoassay, and fluorometric methods. Results: WT supplementation decreased serum Ox-LDL, LOX-1, TC, and TG levels by approximately 50%. TNF- and IL-6 levels were reduced by approximately 30% in the aortic arch. In addition, ADAM10/17 enzyme activities were found to be reduced by approximately 25%. However, no change in the AD-induced fibrotic cap structure was observed in the aortic root. Conclusions: The findings indicate that white tea effectively reduced oxidative stress, inflammation, and dyslipidemia in atherosclerosis but does not affect atheroma plaque morphology.

1 January 2023 in Revista da Associação Médica Brasileira
Verified
Journal Article
Open access
PDF file
GAGürkan Altuntaş
Gürkan Altuntaş
MAMehmet ALTUNTAŞ
Mehmet ALTUNTAŞ
MIMelih Imamoğlu
Melih Imamoğlu
MÇMuhammet Kadri Çolakoğlu
Muhammet Kadri Çolakoğlu
HUHuseyin Avni Uydu
Huseyin Avni Uydu
RBRecep Bedir
Recep Bedir
Acute appendicitis is one of the most common surgical causes of an acute abdomen among patients admitted to the emergency room due to abdominal pain. The clinical diagnosis of acute appendicitis is usually difficult and is made by evaluating the clinical, laboratory, and radiological findings together. The aim of this study was to investigate the diagnostic potential of signal peptide-CUB-EGF-like domain-containing protein 1 as a biomarker for acute appendicitis.

25 February 2026 in Journal of Food Measurement and Characterization
Verified
Journal Article
Open access
PDF file
MAMehtap ATAK
Mehtap ATAK
HUHuseyin Avni Uydu
Huseyin Avni Uydu
EKEda YILMAZ KUTLU
Eda YILMAZ KUTLU
SESaliha Ekşi
Saliha Ekşi
ERErva Rakıcı
Erva Rakıcı
SKSevgi Kolaylı
Sevgi Kolaylı
Ornithogalum sigmoideum Freyn & Sint., locally known as Sakarca, is a wild edible plant that grows naturally in the Eastern Black Sea Region of Türkiye and is traditionally consumed as a seasonal food, typically after cooking in accordance with local preparation practices. In this study, the aerial, flower, and bulb parts of the plant were investigated to characterize their phenolic composition, antioxidant capacity, and antiproliferative properties. Total phenolic content (TPC) and total flavonoid content (TFC) were determined using standard spectrophotometric methods, while individual phenolic constituents, including protocatechuic acid and flavonoids such as chrysin, were identified by HPLC-PDA. Antioxidant activity was assessed by FRAP, CUPRAC, and DPPH assays to evaluate reducing power and radical scavenging capacity. The aerial parts exhibited the highest TPC and TFC values, whereas the flower extract, characterized by relatively higher chrysin content, demonstrated stronger reducing activity in the FRAP and CUPRAC assays together with consistent DPPH scavenging behavior. Antiproliferative activity was assessed in HepG2, DU145, and HT-29 cancer cell lines, with CRL-1790 used as the normal control. The aerial extract produced measurable but limited growth inhibition (49–59%) in cancer cells at the highest tested concentration, while exerting comparatively low effects on normal cells. The flower and bulb extracts showed weaker antiproliferative activity overall. Collectively, these findings indicate that O. sigmoideum possesses noteworthy antioxidant potential and limited antiproliferative effects. Although not a potent cytotoxic agent, its phenolic profile supports its potential relevance as a source of bioactive compounds for functional food and nutraceutical applications.