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  1. Article ; Online: Oxidative stress and inflammatory markers in streptozotocin-induced acute and subacute toxicity response.

    Şancı, Ebru / Köksal Karayıldırım, Çinel / Dağdeviren, Melih / Yiğittürk, Gürkan / Buhur, Aylin / Erbaş, Oytun / Yavaşoğlu, Altuğ / Karabay Yavaşoğlu, Nefise Ülkü

    Drug and chemical toxicology

    2024  , Page(s) 1–16

    Abstract: Streptozotocin (STZ) is used as a diabetes-inducing agent in experimental animal studies. However, it is known that STZ-induced diabetic animals show significant increases in oxidative stress parameters and neurodegeneration besides their blood glucose ... ...

    Abstract Streptozotocin (STZ) is used as a diabetes-inducing agent in experimental animal studies. However, it is known that STZ-induced diabetic animals show significant increases in oxidative stress parameters and neurodegeneration besides their blood glucose level. In this study, the acute and subacute toxic effects of STZ on the liver, sciatic nerve, and brain tissues were investigated
    Language English
    Publishing date 2024-02-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 548368-2
    ISSN 1525-6014 ; 0148-0545
    ISSN (online) 1525-6014
    ISSN 0148-0545
    DOI 10.1080/01480545.2024.2315150
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: L-glutamic acid-g-poly hydroxyethyl methacrylate nanoparticles: acute and sub-acute toxicity and biodistribution potential in mice.

    Bakan, Buket / Oltulu, Fatih / Yıldırım, Yeliz / Yavaşoğlu, Altuğ / Akgöl, Sinan / Karabay Yavaşoğlu, Nefise Ülkü

    Arhiv za higijenu rada i toksikologiju

    2023  Volume 74, Issue 3, Page(s) 207–217

    Abstract: The aim of this safety study in mice was to ... ...

    Abstract The aim of this safety study in mice was to determine
    MeSH term(s) Mice ; Animals ; Tissue Distribution ; Glutamic Acid/toxicity ; Methacrylates ; Nanoparticles/toxicity ; Toxicity Tests, Acute
    Chemical Substances hydroxyethyl methacrylate (6E1I4IV47V) ; Glutamic Acid (3KX376GY7L) ; Methacrylates
    Language English
    Publishing date 2023-09-30
    Publishing country Croatia
    Document type Journal Article
    ZDB-ID 127289-5
    ISSN 1848-6312 ; 0004-1254
    ISSN (online) 1848-6312
    ISSN 0004-1254
    DOI 10.2478/aiht-2023-74-3768
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Single and repeat-dose toxicity and local tolerance assessment of newly developed oil emulsion adjuvant formulations for veterinary purposes.

    Alsakini, Karrar Ali Mohammed Hasan / Sanci, Ebru / Buhur, Aylin / Yavasoglu, Altuğ / Karabay Yavasoglu, N Ülkü / Nalbantsoy, Ayşe

    Drug and chemical toxicology

    2023  , Page(s) 1–12

    Abstract: Adjuvants are components of vaccines that boost the intensity, duration, and breadth of the immune response. Insight into the mechanisms responsible for the immunotoxicity of both local and systemic adverse reactions following the use of adjuvants has ... ...

    Abstract Adjuvants are components of vaccines that boost the intensity, duration, and breadth of the immune response. Insight into the mechanisms responsible for the immunotoxicity of both local and systemic adverse reactions following the use of adjuvants has been gained through research over the past twenty years. In the present study, single and repeated-dose toxicity and local tolerance of newly developed Water-in-Oil (W/O) and Water-in-Oil-in-Water (W/O/W) Emulsion adjuvants (Coralvac RZ 528, Coralvac RZ 506, Coralvac AT 318, Coralvac AT 318 SIS and Coralvac 252) by Coral Biotechnology Industry and Trade Incorporated Company were demonstrated after intramuscular injection in mice. In both toxicity studies, no adverse reactions such as death, general appearance, behavior, or weight loss were observed in the mice in the experimental groups. The results indicate that clinical chemistry parameters demonstrated normal function of the major organs and no irreversible damage to the mice in all adjuvant groups compared to the control group. In histopathologic investigation of single dose toxicity study, inflammation, edema, and large amounts of lipid droplets were observed on the 7th day in all experimental groups. On the 14th day, when the control group and the experimental groups were compared, it was seen that inflammation and edema had decreased considerably. Similarly, repeated dose toxicity study showed mild inflammation and edema in the control group, while quite widespread and severe inflammation, edema, and diffuse lipid droplets of varying sizes were observed in all adjuvant groups compared to the control group. These observations would be useful for the future development of oil-based adjuvants and their use in veterinary inactive vaccines.
    Language English
    Publishing date 2023-12-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 548368-2
    ISSN 1525-6014 ; 0148-0545
    ISSN (online) 1525-6014
    ISSN 0148-0545
    DOI 10.1080/01480545.2023.2291985
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Receptor mediated targeting of EGF-conjugated alginate-PAMAM nanoparticles to lung adenocarcinoma: 2D/3D in vitro and in vivo evaluation.

    Ilhan-Ayisigi, Esra / Saglam-Metiner, Pelin / Sanci, Ebru / Bakan, Buket / Yildirim, Yeliz / Buhur, Aylin / Yavasoglu, Altug / Yavasoglu, N Ulku Karabay / Yesil-Celiktas, Ozlem

    International journal of biological macromolecules

    2024  Volume 261, Issue Pt 1, Page(s) 129758

    Abstract: Carboplatin (cis-diamine (1,1-cyclobutandicarboxylaso)‑platinum (II)) is a second-generation antineoplastic drug, which is widely used for chemotherapy of lung, colon, breast, cervix, testicular and digestive system cancers. Although preferred over ... ...

    Abstract Carboplatin (cis-diamine (1,1-cyclobutandicarboxylaso)‑platinum (II)) is a second-generation antineoplastic drug, which is widely used for chemotherapy of lung, colon, breast, cervix, testicular and digestive system cancers. Although preferred over cisplatin due to the lower incidence of nephrotoxicity and ototoxicity, efficient carboplatin delivery remains as a major challenge. In this study, carboplatin loaded alginate- poly(amidoamine) (PAMAM) hybrid nanoparticles (CAPs) with mean sizes of 192.13 ± 4.15 nm were synthesized using a microfluidic platform, then EGF was conjugated to the surface of CAPs (EGF-CAPs) for the receptor-targeted delivery. Hence, increased FITC
    MeSH term(s) Female ; Animals ; Epidermal Growth Factor/metabolism ; Carboplatin ; Dendrimers ; Alginates ; Cell Line, Tumor ; Nanoparticles ; Antineoplastic Agents/pharmacology ; Antineoplastic Agents/therapeutic use ; Adenocarcinoma of Lung/drug therapy ; Lung Neoplasms/drug therapy ; Drug Delivery Systems
    Chemical Substances Epidermal Growth Factor (62229-50-9) ; Carboplatin (BG3F62OND5) ; Dendrimers ; Alginates ; Antineoplastic Agents
    Language English
    Publishing date 2024-01-28
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 282732-3
    ISSN 1879-0003 ; 0141-8130
    ISSN (online) 1879-0003
    ISSN 0141-8130
    DOI 10.1016/j.ijbiomac.2024.129758
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Is losartan a promising agent for the treatment of type 1 diabetes-induced testicular germ cell apoptosis in rats?

    Buhur, Aylin / Gürel, Çevik / Kuşçu, Gökçe Ceren / Yiğittürk, Gürkan / Oltulu, Fatih / Karabay Yavaşoğlu, Nefise Ülkü / Uysal, Ayşegül / Yavaşoğlu, Altuğ

    Mol Biol Rep. 2023 Mar., v. 50, no. 3 p.2195-2205

    2023  

    Abstract: BACKGROUND: Diabetes mellitus (DM) is common metabolic disease that poses a major risk to public health and fertility. Previous studies indicate that DM may cause male infertility by triggering oxidative stress and germ cell apoptosis in the testis. Due ... ...

    Abstract BACKGROUND: Diabetes mellitus (DM) is common metabolic disease that poses a major risk to public health and fertility. Previous studies indicate that DM may cause male infertility by triggering oxidative stress and germ cell apoptosis in the testis. Due to the undesirable effects of known antidiabetic drugs, scientists have begun to investigate the use of alternative drugs to control infertility complications observed in men. In this context, present study aimed to investigate the possible antiapoptotic effect of losartan against DM-induced testicular germ cell apoptosis. METHODS AND RESULTS: Expreimental DM model was induced by intraperitoneal injection of streptozocin (STZ, 55 mg/kg) to 28 rats, which were then randomly assigned to 4 groups; 1 mL saline solution was given to DM + saline group by oral gavage, 5 mg/kg/day oral losartan was given to DM + low-dose losartan, 20 mg/kg/day oral losartan was given to DM + mid-dose losartan and, 80 mg/kg/day oral losartan was given to DM + high-dose losartan group for 4 weeks. Bax, Bcl-2 and cleaved-Caspase 3 immunoexpression, terminal-deoxynucleotidyl transferase dutp nick end labeling (TUNEL), Annexin-V and Real Time PCR analyses performed to evaluate antiapoptotic effects of losartan on diabetic rats’ testis. In addition, biochemical analyzes carried out to evaluate change in oxidative stress. CONCLUSION: The results showed that losartan may have dose-related antiapoptotic effects on rats’ testis via decreasing oxidative stress.
    Keywords apoptosis ; diabetes mellitus ; germ cells ; intraperitoneal injection ; male sterility ; models ; oxidative stress ; public health ; quantitative polymerase chain reaction ; risk ; sodium chloride ; streptozotocin ; testes
    Language English
    Dates of publication 2023-03
    Size p. 2195-2205.
    Publishing place Springer Netherlands
    Document type Article ; Online
    ZDB-ID 186544-4
    ISSN 1573-4978 ; 0301-4851
    ISSN (online) 1573-4978
    ISSN 0301-4851
    DOI 10.1007/s11033-022-08172-9
    Database NAL-Catalogue (AGRICOLA)

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  6. Article ; Online: The clues in solving the mystery of major psychosis: The epigenetic basis of schizophrenia and bipolar disorder.

    Gürel, Çevik / Kuşçu, Gökçe Ceren / Yavaşoğlu, Altuğ / Biray Avcı, Çığır

    Neuroscience and biobehavioral reviews

    2020  Volume 113, Page(s) 51–61

    Abstract: Schizophrenia (SZ) and bipolar disorder (BD) are severe psychiatric diseases that are characterized by abnormalities of thought, behaviour, cognition and mood. The genetic findings obtained from past molecular genetics research failed to elucidate the ... ...

    Abstract Schizophrenia (SZ) and bipolar disorder (BD) are severe psychiatric diseases that are characterized by abnormalities of thought, behaviour, cognition and mood. The genetic findings obtained from past molecular genetics research failed to elucidate the molecular pathogenesis of SZ and BD and this situation showed that the risk factors for these diseases were not solely due to the DNA sequence. On the other hand, evidence from cell, animal and postmortem brain studies suggest that abnormal epigenetic mechanisms are important actors in the etiology of complex diseases such as SZ and BD. In this review, epigenetic evidences that obtained from DNA methylation, post-translational histone modifications and non-coding RNA studies in SZ and BD were summarized and the importance of this evidences for advances in the diagnosis and treatment of SZ and BD were discussed briefly.
    MeSH term(s) Animals ; Bipolar Disorder/genetics ; DNA Methylation/genetics ; Epigenesis, Genetic/genetics ; Psychotic Disorders ; Schizophrenia/genetics
    Language English
    Publishing date 2020-03-05
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 282464-4
    ISSN 1873-7528 ; 0149-7634
    ISSN (online) 1873-7528
    ISSN 0149-7634
    DOI 10.1016/j.neubiorev.2020.03.005
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Effects of ranibizumab and zoledronic acid on endometriosis in a rat model.

    Ureyen Ozdemir, Eda / Adali, Ertan / Islimye Taskin, Mine / Yavasoglu, Altug / Aktug, Huseyin / Oltulu, Fatih / Inceboz, Umit

    Archives of gynecology and obstetrics

    2022  Volume 306, Issue 4, Page(s) 1399–1405

    MeSH term(s) Animals ; Bone Density Conservation Agents/pharmacology ; Bone Density Conservation Agents/therapeutic use ; Endometriosis/drug therapy ; Female ; Humans ; Ranibizumab ; Rats ; Zoledronic Acid
    Chemical Substances Bone Density Conservation Agents ; Zoledronic Acid (6XC1PAD3KF) ; Ranibizumab (ZL1R02VT79)
    Language English
    Publishing date 2022-02-25
    Publishing country Germany
    Document type Letter ; Research Support, Non-U.S. Gov't
    ZDB-ID 896455-5
    ISSN 1432-0711 ; 0932-0067
    ISSN (online) 1432-0711
    ISSN 0932-0067
    DOI 10.1007/s00404-021-06393-0
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Fluvastatin alleviates doxorubicin-induced cardiac and renal toxicity in rats via regulation of oxidative stress, inflammation, and apoptosis associated genes expressions.

    Kuşçu, Gökçe Ceren / Gürel, Çevik / Buhur, Aylin / Karabay Yavaşoğlu, Nefise Ülkü / Köse, Timur / Yavaşoğlu, Altuğ / Oltulu, Fatih

    Drug and chemical toxicology

    2022  Volume 46, Issue 2, Page(s) 400–411

    Abstract: Doxorubicin (DOXO) is a cytostatic agent used in the chemotherapy protocol of several cancers for more than 40 years, but usage of this drug in cancer treatment has been limited due to severe renal and cardiac tissue toxicities that may result in death ... ...

    Abstract Doxorubicin (DOXO) is a cytostatic agent used in the chemotherapy protocol of several cancers for more than 40 years, but usage of this drug in cancer treatment has been limited due to severe renal and cardiac tissue toxicities that may result in death in patients. Fluvastatin (FV) is a fully synthetic hydroxymethyl glutaryl coenzyme A (HMG-CoA) reductase inhibitor used as a cholesterol-lowering agent in patients with hypercholesterolemia. Previous studies revealed that FV also exhibits antioxidant, anti-inflammatory, and antitumor activity. Additionally, our previous study indicated that FV exerts a prophylactic effect on DOXO-induced testicular toxicity by preventing lipid peroxidation, supporting the antioxidant system, and regulating the blood-testis barrier-associated genes expression. Herein, we purposed to evaluate the possible therapeutic and the protective effects of FV on the DOXO-induced cardiac and renal toxicitiy model by histochemical, immunohistochemical, biochemical, and real-time polymerase chain reaction (real-time PCR) analyses. Results point out protective use of FV exerts a beneficial effect by repressing lipid peroxidation and by regulating the inducible nitric oxide synthase (iNOS), nitric oxide synthase endothelial (eNOS), nuclear factor kappa-B (NF-κB), and Caspase-3 (Casp3) protein and mRNA expressions, which play an important role in mediating DOXO-induced renal and cardiac toxicity mechanisms. In conclusion, FV may be a candidate agent for the prevention of renal and cardiac toxicities in cancer patients receiving DOXO chemotherapy.
    MeSH term(s) Male ; Rats ; Animals ; Fluvastatin/pharmacology ; Antioxidants/pharmacology ; Doxorubicin ; Oxidative Stress ; Apoptosis ; Cardiotoxicity/prevention & control ; Inflammation/chemically induced
    Chemical Substances Fluvastatin (4L066368AS) ; Antioxidants ; Doxorubicin (80168379AG)
    Language English
    Publishing date 2022-02-24
    Publishing country United States
    Document type Journal Article
    ZDB-ID 548368-2
    ISSN 1525-6014 ; 0148-0545
    ISSN (online) 1525-6014
    ISSN 0148-0545
    DOI 10.1080/01480545.2022.2043351
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Is losartan a promising agent for the treatment of type 1 diabetes-induced testicular germ cell apoptosis in rats?

    Buhur, Aylin / Gürel, Çevik / Kuşçu, Gökçe Ceren / Yiğittürk, Gürkan / Oltulu, Fatih / Karabay Yavaşoğlu, Nefise Ülkü / Uysal, Ayşegül / Yavaşoğlu, Altuğ

    Molecular biology reports

    2022  Volume 50, Issue 3, Page(s) 2195–2205

    Abstract: Background: Diabetes mellitus (DM) is common metabolic disease that poses a major risk to public health and fertility. Previous studies indicate that DM may cause male infertility by triggering oxidative stress and germ cell apoptosis in the testis. Due ...

    Abstract Background: Diabetes mellitus (DM) is common metabolic disease that poses a major risk to public health and fertility. Previous studies indicate that DM may cause male infertility by triggering oxidative stress and germ cell apoptosis in the testis. Due to the undesirable effects of known antidiabetic drugs, scientists have begun to investigate the use of alternative drugs to control infertility complications observed in men. In this context, present study aimed to investigate the possible antiapoptotic effect of losartan against DM-induced testicular germ cell apoptosis.
    Methods and results: Expreimental DM model was induced by intraperitoneal injection of streptozocin (STZ, 55 mg/kg) to 28 rats, which were then randomly assigned to 4 groups; 1 mL saline solution was given to DM + saline group by oral gavage, 5 mg/kg/day oral losartan was given to DM + low-dose losartan, 20 mg/kg/day oral losartan was given to DM + mid-dose losartan and, 80 mg/kg/day oral losartan was given to DM + high-dose losartan group for 4 weeks. Bax, Bcl-2 and cleaved-Caspase 3 immunoexpression, terminal-deoxynucleotidyl transferase dutp nick end labeling (TUNEL), Annexin-V and Real Time PCR analyses performed to evaluate antiapoptotic effects of losartan on diabetic rats' testis. In addition, biochemical analyzes carried out to evaluate change in oxidative stress.
    Conclusion: The results showed that losartan may have dose-related antiapoptotic effects on rats' testis via decreasing oxidative stress.
    MeSH term(s) Rats ; Male ; Animals ; Losartan/pharmacology ; Losartan/therapeutic use ; Testis/metabolism ; Diabetes Mellitus, Type 1/metabolism ; Diabetes Mellitus, Experimental/metabolism ; Apoptosis ; Germ Cells/metabolism ; Oxidative Stress ; Streptozocin/adverse effects
    Chemical Substances Losartan (JMS50MPO89) ; Streptozocin (5W494URQ81)
    Language English
    Publishing date 2022-12-24
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 186544-4
    ISSN 1573-4978 ; 0301-4851
    ISSN (online) 1573-4978
    ISSN 0301-4851
    DOI 10.1007/s11033-022-08172-9
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article: The regulatory effects of clomiphene and tamoxifen on mTOR and LC3-II expressions in relation to autophagy in experimental polycystic ovary syndrome (PCOS)

    Kuşçu, Gökçe Ceren / Gürel, Çevik / Buhur, Aylin / Oltulu, Fatih / Akman, Levent / Köse, Timur / Yavaşoğlu, Nefise Ülkü Karabay / Yavaşoğlu, Altuğ

    Molecular biology reports. 2022 Mar., v. 49, no. 3

    2022  

    Abstract: BACKGROUND: Polycystic ovary syndrome (PCOS) is a metabolic disease that causes infertility due to anovulation in women in reproductive age. It is known that clomiphene citrate (CC) and tamoxifen citrate (TMX) induce ovulation in women with PCOS. In this ...

    Abstract BACKGROUND: Polycystic ovary syndrome (PCOS) is a metabolic disease that causes infertility due to anovulation in women in reproductive age. It is known that clomiphene citrate (CC) and tamoxifen citrate (TMX) induce ovulation in women with PCOS. In this study, we aimed to investigate the effects of CC and TMX on the autophagy pathway in PCOS. METHODS AND RESULTS: Experimental PCOS model was induced by letrozole (1 mg/kg) in rats by gavage for 21 days. After the last letrozole administration, rats were treated TMX (1 mg/kg) or CC (1 mg/kg) for 5 days. At the end of the experimental procedures, rats in all groups were sacrificed and ovarian tissues were removed. It was observed that mRNA and protein expressions of LC3-II were significantly higher in TMX and CC groups than control and PCOS groups (p < 0.05), while mRNA and protein expressions of mTOR in TMX and CC groups were found significantly lower than control and PCOS groups (p < 0.05). CONCLUSIONS: In conclusion, present study suggests that TMX and CC induce autophagy in ovaries with PCOS. Autophagy is a promising target for understanding pathophysiology of this disease and for developing more effective and safe new protocols for the treatment of PCOS-related anovulation.
    Keywords anovulation ; autophagy ; citrates ; metabolic diseases ; models ; molecular biology ; pathophysiology ; polycystic ovary syndrome ; tamoxifen
    Language English
    Dates of publication 2022-03
    Size p. 1721-1729.
    Publishing place Springer Netherlands
    Document type Article
    ZDB-ID 186544-4
    ISSN 1573-4978 ; 0301-4851
    ISSN (online) 1573-4978
    ISSN 0301-4851
    DOI 10.1007/s11033-021-06981-y
    Database NAL-Catalogue (AGRICOLA)

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