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  1. Article ; Online: Renal tubular estrogen ß receptors are expressed at high levels in small vessel vasculitis and are primarily localized in the distal tubule.

    Kor, Ahmet / Sungu, Nuran / Karabulut, Şefika / Erten, Şükran

    FASEB journal : official publication of the Federation of American Societies for Experimental Biology

    2024  Volume 38, Issue 4, Page(s) e23497

    Abstract: This study investigated the possible roles of renal estrogen receptors (ER) in glomerulonephritis associated with small vessel vasculitis. The relationships of ERs were investigated in antineutrophilic cytoplasmic antibody (ANCA)-associated ... ...

    Abstract This study investigated the possible roles of renal estrogen receptors (ER) in glomerulonephritis associated with small vessel vasculitis. The relationships of ERs were investigated in antineutrophilic cytoplasmic antibody (ANCA)-associated glomerulonephritis and immunoglobulin A (IgA) nephropathy groups, which are small vessel vasculitis subtypes with two different glomerulonephritis development pathophysiologies. The design of this study was prepared as a retrospective cohort study. The study included 42 patients with ANCA-associated vasculitis and 18 with IgA nephropathy in the small vessel vasculitis group. For the control group, intact renal tissues of 28 patients who underwent nephrectomy due to renal cell carcinoma were used. Renal biopsy samples of the groups were stained with ER beta (ß) and ER alpha (α). Tubular ER ß expression score (TERßES) median values were found to be significantly higher in ANCA- associated vasculitis (B = 0.724, OR [95%CI]: 2.064 [1.141-3.731], p = .016) and IgA nephropathy (B = 0.898, OR [95%CI]: 2.454 [1.307-4.609], p = .005) than in intact kidney tissue. It was determined that tubular ERß was most frequently localized in the distal tubule at 57.9% and the second most common in the proximal tubule at 20.4%. The expression of tubular ERß is increased in glomerulonephritis due to small vessel vasculitis. Tubular ERßs are most commonly localized in the distal tubule. Further studies are needed to understand the physiological and pathophysiological effects of altered renal ER levels in small vessel vasculitis.
    MeSH term(s) Humans ; Receptors, Estrogen ; Glomerulonephritis, IGA ; Antibodies, Antineutrophil Cytoplasmic ; Retrospective Studies ; Kidney ; Glomerulonephritis ; Vasculitis ; Kidney Neoplasms ; Estrogens ; Amelogenesis Imperfecta ; Nephrocalcinosis
    Chemical Substances Receptors, Estrogen ; Antibodies, Antineutrophil Cytoplasmic ; Estrogens
    Language English
    Publishing date 2024-02-20
    Publishing country United States
    Document type Journal Article
    ZDB-ID 639186-2
    ISSN 1530-6860 ; 0892-6638
    ISSN (online) 1530-6860
    ISSN 0892-6638
    DOI 10.1096/fj.202302362RR
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Renal tubular and glomerular estrogen receptor ß levels are lower in lupus nephritis than in familial Mediterranean fever-associated renal amyloidosis.

    Kor, Ahmet / Süngü, Nuran / Biçer, Cemile / Erten, Şükran

    Lupus

    2023  Volume 32, Issue 13, Page(s) 1536–1547

    Abstract: Background: Estrogen has been thought to play an essential role in the disease pathogenesis of systemic lupus erythematosus, which is 9-10 times more prevalent in the female population. It has been shown that irregular estrogen/estrogen receptor ... ...

    Abstract Background: Estrogen has been thought to play an essential role in the disease pathogenesis of systemic lupus erythematosus, which is 9-10 times more prevalent in the female population. It has been shown that irregular estrogen/estrogen receptor signaling pathways may contribute to the pathophysiology of various renal diseases. In this study, we compared renal estrogen receptors between lupus nephritis, familial Mediterranean fever-associated renal amyloidosis, ANCA-associated nephritis, and intact kidney to investigate their role in the pathophysiology of renal diseases.
    Methods: This study was designed as a retrospective cohort study. Thirty systemic lupus erythematosus patients with lupus nephritis, 12 familial Mediterranean fever amyloidosis and 10 ANCA-associated glomerulonephrites, and 14 individuals with normal renal histology were included in the study.
    Results: Tubular estrogen receptor ß expression score was found to be significantly higher in the familial Mediterranean fever [5 (1-8)] group than in the lupus nephritis [0 (0-1)] (B = 1.385, OR = 3.996, CI %95 = 1.805-8.846,
    Conclusions: This study showed that tubular estrogen receptor ß expression score was elevated in familial Mediterranean fever amyloidosis and correlated with serum creatinine levels and renal crescents.
    MeSH term(s) Humans ; Female ; Lupus Nephritis/pathology ; Receptors, Estrogen ; Familial Mediterranean Fever/complications ; Lupus Erythematosus, Systemic ; Retrospective Studies ; Antibodies, Antineutrophil Cytoplasmic ; Creatinine ; Kidney Diseases ; Amyloidosis/etiology ; Estrogens
    Chemical Substances Receptors, Estrogen ; Antibodies, Antineutrophil Cytoplasmic ; Creatinine (AYI8EX34EU) ; Estrogens
    Language English
    Publishing date 2023-10-31
    Publishing country England
    Document type Journal Article
    ZDB-ID 1154407-7
    ISSN 1477-0962 ; 0961-2033
    ISSN (online) 1477-0962
    ISSN 0961-2033
    DOI 10.1177/09612033231210728
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Tofacitinib-induced subacute cutaneous lupus erythematosus in a patient with rheumatoid arthritis.

    Apaydın, Hakan / Erten, Şükran

    Modern rheumatology case reports

    2021  Volume 5, Issue 2, Page(s) 254–258

    Abstract: Tofacitinib is a Janus kinase inhibitor that is employed in the treatment of several diseases, especially rheumatoid arthritis (RA), to prevent joint damage and reduce disease activity. Drug-induced lupus erythematosus (DILE) is a disorder that is linked ...

    Abstract Tofacitinib is a Janus kinase inhibitor that is employed in the treatment of several diseases, especially rheumatoid arthritis (RA), to prevent joint damage and reduce disease activity. Drug-induced lupus erythematosus (DILE) is a disorder that is linked to some drugs and is characterised by regression of clinical signs and symptoms after discontinuation of the drug. A 56-year-old woman who was diagnosed with RA for 20 years was admitted to the rheumatology department. Tofacitinib tablet 10 mg/d was added to the patient's medical treatment. Three months after this medical treatment, the patient was diagnosed with drug-induced subacute cutaneous lupus erythematous (DISCLE) with erythematous skin lesions and autoantibody positivity. The skin rash, with increased autoantibodies, improved 6 months after discontinuation of tofacitinib. To the best of our knowledge, tofacitinib-induced lupus erythematous has not been previously reported. In this case, DILE developed after tofacitinib treatment in a patient who was followed up with RA.
    MeSH term(s) Arthritis, Rheumatoid/complications ; Female ; Humans ; Lupus Erythematosus, Cutaneous/chemically induced ; Lupus Erythematosus, Cutaneous/diagnosis ; Middle Aged ; Piperidines/adverse effects ; Pyrimidines/adverse effects
    Chemical Substances Piperidines ; Pyrimidines ; tofacitinib (87LA6FU830)
    Language English
    Publishing date 2021-02-18
    Publishing country England
    Document type Case Reports
    ISSN 2472-5625
    ISSN (online) 2472-5625
    DOI 10.1080/24725625.2021.1877241
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: The thiol/disulfide balance is shifted towards oxidation in psoriatic arthritis compared to controls and is associated with higher disease activity.

    Kor, Ahmet / Akan, Selçuk / Oğuz, Esra Fırat / Maraş, Yüksel / Neşelioğlu, Salim / Erten, Şükran

    Laboratory medicine

    2024  

    Abstract: Objective: This study was designed to compare thiol/disulfide and ischemia-modified albumin (IMA) levels between psoriatic arthritis (PsA) and healthy controls and evaluate the correlation between these molecules and the disease activity scores used in ... ...

    Abstract Objective: This study was designed to compare thiol/disulfide and ischemia-modified albumin (IMA) levels between psoriatic arthritis (PsA) and healthy controls and evaluate the correlation between these molecules and the disease activity scores used in PsA.
    Methods: A total of 63 PsA patients and 49 healthy volunteers were included in the study. Bath Ankylosing Spondylitis Disease Activity Index (BASDAI), modified disease activity score 28 (DAS28), and Bath Ankylosing Spondylitis Functional Index (BASFI) scores were used as disease activity indices for PsA patients. Calculations of native thiol (-SH), disulfide (-SS), and total thiol (-SH+-SS) molecules were made by the automatic spectrophotometric method, and the albumin cobalt binding test was used to measure IMA levels.
    Results: In the PsA group, -SS/-SH and -SS/(-SH+-SS) levels were higher and -SH/(-SH+-SS) levels were lower than in controls. In the linear regression analysis, a significant correlation relationship was detected between DAS28-erythrocyte sedimentation rate (ESR) and -SS/(-SH+-SS) (β = 0.795, CI 95%, 0.196-1.395; P = .010), -SH/(-SH+-SS) (β = -0.475, CI 95%, 0.114-0.836; P = .010) and IMA (β = 3.932, CI 95%, 0.859-7.005; P = .013). Additionally, a significant correlation was detected between IMA and BASDAI and BASFI.
    Conclusion: In PsA, thiol/disulfide homeostasis has shifted in favor of disulfide as an oxidative indicator. Serum thiol/disulfide levels are correlated with PsA disease activity indices.
    Language English
    Publishing date 2024-03-26
    Publishing country England
    Document type Journal Article
    ZDB-ID 391758-7
    ISSN 1943-7730 ; 0007-5027
    ISSN (online) 1943-7730
    ISSN 0007-5027
    DOI 10.1093/labmed/lmae014
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Vascular Involvement in Behcet's Disease: An Evaluation of 147 Cases and Literature Review.

    Atalar, Ebru / Erten, Sukran / Dogan, Ismail / Konak, Hatice Ecem

    Sisli Etfal Hastanesi tip bulteni

    2023  Volume 57, Issue 3, Page(s) 380–386

    Abstract: Objectives: Behcet's disease (BD) is characterized by systemic vasculitis with inflammation that can affect various body organs. In BD, vasculitis primarily manifests with venous involvement, distinguishing it from other forms of systemic vasculitis.: ...

    Abstract Objectives: Behcet's disease (BD) is characterized by systemic vasculitis with inflammation that can affect various body organs. In BD, vasculitis primarily manifests with venous involvement, distinguishing it from other forms of systemic vasculitis.
    Methods: We retrospectively analyzed the demographic and clinical characteristics of 147 patients diagnosed with vascular BD in our center.
    Results: Vascular BD cases accounted for 25.0% (147 out of 589) of all BD patients. A statistically significant correlation was found between gender and vascular involvement that was seen predominantly in males (76.9%). In 71 patients, a vascular event developed during follow-up for BD, while in 76 patients the disease was diagnosed after the occurrence of a vascular event (51.7%). The most common vascular event was deep vein thrombosis in the lower extremities (69.4%). Arterial involvement was primarily observed in the pulmonary arteries (12.9%). Patients with lower extremity deep vein thrombosis tended to be younger, while those with pulmonary artery involvement were typically older. Overall, veins were affected 4.5 times more frequently than arteries.
    Conclusion: The prevalent type of venous involvement was deep vein thrombosis in the lower extremities. Thrombotic events in BD cannot be solely attributed to abnormalities in thrombotic factors. The treatment of thrombotic events in BD remains contentious, with anticoagulant efficacy being debated and immunosuppressive therapy representing the primary treatment approach. Behcet's disease should be considered when a young male patient presents with an arterial or venous vascular event, especially if it is recurrent.
    Language English
    Publishing date 2023-09-29
    Publishing country Turkey
    Document type Journal Article
    ZDB-ID 3026862-X
    ISSN 1308-5123 ; 1302-7123
    ISSN (online) 1308-5123
    ISSN 1302-7123
    DOI 10.14744/SEMB.2023.89083
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Does Eta Protein Differentiate Rheumatoid Arthritis from Psoriatic Arthritis?

    Kor, Ahmet / Orhan, Kevser / Maraş, Yüksel / Oğuz, Esra Fırat / Unan, Mehtap Kalçık / Dilek, Gamze / Erten, Şükran / Nas, Kemal

    Current medicinal chemistry

    2024  

    Abstract: Aim: The clinical symptoms and laboratory markers of Rheumatoid Arthritis (RA) and Psoriatic Arthritis (PsA) can be very similar, so making a differential diagnosis between these two diseases is often difficult. Serological parameters to be used in ... ...

    Abstract Aim: The clinical symptoms and laboratory markers of Rheumatoid Arthritis (RA) and Psoriatic Arthritis (PsA) can be very similar, so making a differential diagnosis between these two diseases is often difficult. Serological parameters to be used in differential diagnosis can guide the clinician. This study aimed to investigate the usability of 14-3-3η (eta) protein as a biomarker in the differential diagnosis of PsA and RA, and the relationships between eta protein and disease activity scores and joint erosions in PsA and RA.
    Methods: 54 PsA patients, 53 RA patients, and 56 healthy individuals were included in this study. The ELISA (Enzyme-Linked ImunoSorbent Assay) kit was used as a quantitative sandwich enzyme immunoassay technique to detect human eta protein levels. Receiver- operating Characteristic (ROC) curves analysis was used to determine the sensitivity and specificity of the eta protein.
    Results: Eta protein levels were found to be significantly higher in the RA group than in the PsA [B: -0.341, OR (95% CI): 0.711 (0.556-0.909), p: 0.007] and control [B: -0.225, OR (95% CI): 0.798 (0.641-0.995), p: 0.045] groups. Eta protein median values were significantly higher in patients with joint erosion than in those without [β= 0.151, OR (95% CI): 1.163 (1.003-1.349), p: 0.046].
    Conclusion: Eta protein levels are higher in the serum of RA patients than PsA and are associated with joint erosion. Eta protein may be a potential biomarker in the differential diagnosis of RA and PsA. It may represent a possible therapeutic step in the pathophysiological pathways in the development of joint erosion.
    Language English
    Publishing date 2024-04-27
    Publishing country United Arab Emirates
    Document type Journal Article
    ZDB-ID 1319315-6
    ISSN 1875-533X ; 0929-8673
    ISSN (online) 1875-533X
    ISSN 0929-8673
    DOI 10.2174/0109298673295359240422115759
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Serum netrin-1 levels are high in Rheumatoid arthritis associated interstitial lung disease.

    Kor, Ahmet / Güven, Serdar Can / Akan, Selçuk / Eren, Funda / Ecem Konak, Hatice / Maraş, Yüksel / Orhan, Kevser / Neşelioğlu, Salim / Erten, Şükran

    Clinical biochemistry

    2024  Volume 127-128, Page(s) 110760

    Abstract: Background: Recent data show that netrin-1 has a role in development of pulmonary fibrosis. This study was aimed to investigate serum netrin-1 level and its relation to interstitial lung disease(ILD) in patients with rheumatoid arthritis (RA).: Method! ...

    Abstract Background: Recent data show that netrin-1 has a role in development of pulmonary fibrosis. This study was aimed to investigate serum netrin-1 level and its relation to interstitial lung disease(ILD) in patients with rheumatoid arthritis (RA).
    Method: 42 RA patients with RA-ILD, 58 RA patients without RA-ILD (RA non-ILD group), and 61 healthy volunteers were included in this study. The modified DAS28-ESR score was used to calculate disease activity in RA patients. Using the quantitative immunoassay method, Serum netrin-1 levels were measured with an ELISA kit (Catalog number: E-EL-H2328; lab science, lot number: GZWTKZ5SWK, Texas, USA).
    Results: The median value of netrin-1 was found to be significantly higher in the RA-ILD group (82.9 [59.9-124]) compared to both the RA non-ILD group(52.9 [49.5-73.1])(B = -0.006, OR = 0.994, CI 95 %=0.989-0.999, P = 0.018) and the control group(53.5 [49.5-87.5]) (B: -0.005, OR: 0.994, CI 95 %: 0.990-0.999, p: 0.022). A cut-off value of 61.78 for netrin-1 was found to have a sensitivity of 73.8 % and a specificity of 69 % for the diagnosis of RA-ILD (AUC [95 %Cl] = 0.771 [0.679-0.862], p < 0.0001).It was found that high serum netrin-1 level was strongly associated with the RA-usual interstitial pneumonia(UIP) pattern and poorly related to the RA-nonspecific interstitial pneumonia(NSIP) pattern compared to the RA non-ILD group.
    Conclusions: Netrin-1 is elevated in the serum of patients with RA-ILD, especially in the UIP pattern. Netrin-1 may be a potential candidate for predicting the development of RA-ILD that should be investigated in the pathophysiological and therapeutic fields..
    MeSH term(s) Humans ; Netrin-1/blood ; Arthritis, Rheumatoid/blood ; Arthritis, Rheumatoid/complications ; Lung Diseases, Interstitial/blood ; Lung Diseases, Interstitial/etiology ; Lung Diseases, Interstitial/complications ; Female ; Male ; Middle Aged ; Aged ; Biomarkers/blood ; Adult ; Case-Control Studies
    Chemical Substances Netrin-1 (158651-98-0) ; NTN1 protein, human ; Biomarkers
    Language English
    Publishing date 2024-03-29
    Publishing country United States
    Document type Journal Article
    ZDB-ID 390372-2
    ISSN 1873-2933 ; 0009-9120
    ISSN (online) 1873-2933
    ISSN 0009-9120
    DOI 10.1016/j.clinbiochem.2024.110760
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Accelerated kynurenine pathway downregulates immune activation in patients with axial spondyloarthritis.

    Yurt, Emine Feyza / Biçer, Cemile / Serdar, Muhittin A / Akan, Selçuk / Erten, Şükran

    Cytokine

    2023  Volume 169, Page(s) 156247

    Abstract: Various studies reported that the kynurenine (Kyn) pathway plays a pivotal role in regulating the balance between activation and inhibition of the immune system. Proinflammatory cytokines can accelerate the Kyn pathway by altering indoleamine (2, 3)- ... ...

    Abstract Various studies reported that the kynurenine (Kyn) pathway plays a pivotal role in regulating the balance between activation and inhibition of the immune system. Proinflammatory cytokines can accelerate the Kyn pathway by altering indoleamine (2, 3)- dioxygenase (IDO) allosteric enzyme activity. Excessive cytokine release and immune system activation have essential roles in the pathogenesis of axial spondyloarthritis (axSpA). We aimed to investigate the relationship of the Kyn pathway with proinflammatory cytokines and with the severity of the disease in patients with axSpA. The study included 104 patients with axSpA and 54 healthy volunteers. The severity of the disease was determined by Bath Ankylosing Spondylitis Disease Activity Index (BASDAI). The Kyn pathway was evaluated by IDO activity calculated with Kyn/Tryptophan (Trp) ratio. Plasma Trp and Kyn concentrations were measured with tandem mass spectrometry. Serum IL 17/23 and IFN-γ concentrations were measured with ELISA. These groups were compared in terms of IDO, IL-17, IL-23, IFN-γ, and BASDAI. Plasma IDO activity was significantly increased, however, serum IL-17, IL-23, and IFN-γ levels were significantly decreased in patients compared to healthy volunteers. While IFN-γ was positively correlated with the severity of the disease (p = 0.02), it also had a significant inverse correlation with IDO activity (p < 0.001). However, these correlations are weak. As a result of this study, the Kyn pathway is accelerated and proinflammatory cytokine levels are decreased in patients with axSpA. All of these results with an indirect weak negative association between high IDO and low disease activity suggest that an accelerated Kyn pathway may limit the immune system activation in axSpA disease.
    MeSH term(s) Humans ; Kynurenine/metabolism ; Interleukin-17 ; Indoleamine-Pyrrole 2,3,-Dioxygenase/metabolism ; Tryptophan/metabolism ; Cytokines ; Interleukin-23
    Chemical Substances Kynurenine (343-65-7) ; Interleukin-17 ; Indoleamine-Pyrrole 2,3,-Dioxygenase ; Tryptophan (8DUH1N11BX) ; Cytokines ; Interleukin-23
    Language English
    Publishing date 2023-06-07
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1018055-2
    ISSN 1096-0023 ; 1043-4666
    ISSN (online) 1096-0023
    ISSN 1043-4666
    DOI 10.1016/j.cyto.2023.156247
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  9. Article ; Online: Secukinumab can treat psoriasis induced by anti-TNF-alpha therapy in patients with ankylosing spondylitis: Case series.

    Apaydin, Hakan / Dogan, Ismail / Erten, Şükran

    International journal of rheumatic diseases

    2020  Volume 23, Issue 3, Page(s) 454–456

    MeSH term(s) Antibodies, Monoclonal, Humanized/therapeutic use ; Female ; Humans ; Middle Aged ; Psoriasis/chemically induced ; Psoriasis/diagnosis ; Psoriasis/drug therapy ; Psoriasis/immunology ; Remission Induction ; Spondylitis, Ankylosing/diagnosis ; Spondylitis, Ankylosing/drug therapy ; Spondylitis, Ankylosing/immunology ; Treatment Outcome ; Tumor Necrosis Factor Inhibitors/adverse effects
    Chemical Substances Antibodies, Monoclonal, Humanized ; Tumor Necrosis Factor Inhibitors ; secukinumab (DLG4EML025)
    Language English
    Publishing date 2020-01-15
    Publishing country England
    Document type Case Reports ; Letter
    ZDB-ID 2426924-4
    ISSN 1756-185X ; 1756-1841
    ISSN (online) 1756-185X
    ISSN 1756-1841
    DOI 10.1111/1756-185X.13791
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  10. Article ; Online: Endometrium cancer in a female with psoriatic arthritis treated with TNF alpha antagonist adalimumab.

    Erten, Sukran

    Rheumatology international

    2010  Volume 31, Issue 11, Page(s) 1537–1538

    MeSH term(s) Adalimumab ; Antibodies, Monoclonal, Humanized/adverse effects ; Antibodies, Monoclonal, Humanized/therapeutic use ; Antirheumatic Agents/adverse effects ; Antirheumatic Agents/therapeutic use ; Arthritis, Psoriatic/drug therapy ; Carcinoma, Endometrioid/etiology ; Carcinoma, Endometrioid/pathology ; Carcinoma, Endometrioid/surgery ; Drug Substitution ; Endometrial Neoplasms/etiology ; Endometrial Neoplasms/pathology ; Endometrial Neoplasms/surgery ; Female ; Humans ; Middle Aged ; Risk Factors ; Tumor Necrosis Factor-alpha/antagonists & inhibitors
    Chemical Substances Antibodies, Monoclonal, Humanized ; Antirheumatic Agents ; Tumor Necrosis Factor-alpha ; Adalimumab (FYS6T7F842)
    Language English
    Publishing date 2010-12-01
    Publishing country Germany
    Document type Case Reports ; Letter
    ZDB-ID 8286-7
    ISSN 1437-160X ; 0172-8172
    ISSN (online) 1437-160X
    ISSN 0172-8172
    DOI 10.1007/s00296-010-1661-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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