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Çulha G, Önlen Y, Çabalak M, Kaya T, Küçükeser B. Investigation of Sensitivity of Rapid Diagnosis Tests in Patients with Suspected Malaria. Turkiye Parazitol Derg 2024; 48:1-7. [PMID: 38449360 DOI: 10.4274/tpd.galenos.2024.38358] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/08/2024]
Abstract
Objective Malaria has been eradicated in Türkiye as of 2010, but there are imported cases. In this study, we aimed to compare the diagnostic value of two rapid tests; SD Bioline Malaria Ag Pf/Pan (SD-Pf/Pan) and SD Bioline Malaria Ag Pf/Pv (SD-Pf/Pv) with microscopy and real time-polymerase chain reaction (RT-PCR). Methods Blood samples were taken from all participants. Thick drop smears were prepared. Thick drop smears were examined for malaria positive/negative distinction under the light microscopy. Then, two rapid diagnostic tests (SD-Pf/Pan and SD-Pf/Pv) were performed. After DNA extraction from blood samples, RT-PCR was typed. The data were evaluated with SPSS 21 program of statistics. Results A total of 30 cases out of 66 suspected malaria cases were detected as positive with microscopy and RT-PCR. Twenty-seven patients were found positive with both SD-Pf/Pan and SD-Pf/Pv tests. Based on the microscopic results as a reference method, SD-Pf/Pan and SD-Pf/Pv rapid diagnostic tests had a 90% sensitivity, 100% specificity, 100% positive predictive value (PPV), and 92.86% negative predictive value (NPV). Based on the RT-PCR results as a reference method, for detection of P. falciparum, both tests had a 95.65% sensitivity, 100% specificity, 100% PPV, and 88.89% NPV. Moreover, while SD-Pf/Pv had a sensitivity, specificity, PPV, and NPV of 100% in detection of P. vivax; SD-Pf/Pan has a 77.78% sensitivity of, 61.90% specificity of, 46.67% PPV, and 86.67% NPV SD-Pf/Pan for detection of PAN. Conclusion As a result, high sensitivity and specificity were detected in both kits in the diagnosis of malaria infections caused by P. falciparum and P. vivax. Rapid diagnostic tests can be used safely in diagnosis however the diagnosis should be supported by microscopy and RT-PCR methods when they are applicable.
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Affiliation(s)
- Gülnaz Çulha
- Hatay Mustafa Kemal University Faculty of Medicine, Department of Parasitology, Hatay, Türkiye
| | - Yusuf Önlen
- Hatay Mustafa Kemal University Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Hatay, Türkiye
| | - Mehmet Çabalak
- Hatay Mustafa Kemal University Faculty of Medicine, Department of Infectious Diseases and Clinical Microbiology, Hatay, Türkiye
| | - Tuğba Kaya
- Hatay Mustafa Kemal University Faculty of Medicine, Department of Parasitology, Hatay, Türkiye
| | - Burcu Küçükeser
- Hatay Mustafa Kemal University Faculty of Medicine, Department of Parasitology, Hatay, Türkiye
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Çabalak M, Çulha G, Kaya T, Gürsoy D, İlhan G, Özbilgin A. Evaluation of Four Adult Visceral Leishmaniasis Cases. Turkiye Parazitol Derg 2023; 47:275-279. [PMID: 38149450 DOI: 10.4274/tpd.galenos.2023.47550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2023]
Abstract
Leishmania infantum is the species responsible for visceral leishmaniasis [(VL), kala-azar], which is observed sporadically mainly in pediatric age groups in the Aegean, Mediterranean and Central Anatolian regions of Türkiye. The aim of this study is to evaluate the diagnosis, clinic, laboratory results and treatments of four adult patients with VL who applied to our hospital. The patients were referred to our hospital to investigate hematological malignancy. In the study, the data of four patients (three men, one woman; age range: 30-40 years) who were diagnosed with VL and treated in the infectious diseases clinic of our hospital between January 2022 and April 2022 were evaluated retrospectively. The diagnosis of VL was made according to appropriate clinical and physical examination findings, biochemical and serological tests (indirect fluorescent antibody test and rK39 rapid antigen test) and polymerase chain reaction (PCR) results, as well as the presence of amastigote forms of the parasite in bone marrow samples. Serology positivity was found in all patients, and bone marrow positivity was found in two patients. According to the results of RT-PCR in all patients, it was determined that the species causing the disease was L. infantum/L. donovani. Initially, the most common symptoms were fever, fatigue, and abdominal distension. None of the patients had an immunosuppressive condition. It was understood that all the patients lived in the rural area of Syria's Idlib province. Hepatosplenomegaly, increased erythrocyte sedimentation rate, anemia, leukopenia and thrombocytopenia were found in all patients. The patients were treated with liposomal amphotericin-B (L-AMB). One patient did not come for follow-ups, the other three patients were found to have completely recovered in their follow-up. No recurrence was observed in any of the patients. In conclusion, VL should be considered in patients who apply to health institutions with complaints of fever, hepatosplenomegaly, increased erythrocyte sedimentation rate, anemia, leukopenia and thrombocytopenia.
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Affiliation(s)
- Mehmet Çabalak
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Enfeksiyon Hastalıkları ve Klinik Mikrobiyoloji Anabilim Dalı, Hatay, Türkiye
| | - Gülnaz Çulha
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Hatay, Türkiye
| | - Tuğba Kaya
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Hatay, Türkiye
| | - Didar Gürsoy
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Patoloji Anabilim Dalı, Hatay Türkiye
| | - Gül İlhan
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Hematoloji Anabilim Dalı, Hatay Türkiye
| | - Ahmet Özbilgin
- Celal Bayar Üniversitesi Tıp Faküktesi, Tıbbi Parazitoloji Anabilim Dalı, Manisa, Türkiye
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Kaya T, Yılmaz G, Zraick RI, Konrot A, Cangi ME. Reliability and validity of the Turkish voice handicap index-partner (VHI-P-TR). J Commun Disord 2023; 106:106380. [PMID: 37738707 DOI: 10.1016/j.jcomdis.2023.106380] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Revised: 09/04/2023] [Accepted: 09/12/2023] [Indexed: 09/24/2023]
Abstract
OBJECTIVE This study examines the Turkish validity, reliability and diagnostic performance of the Voice Handicap Index-Partner (VHI-P-TR), which is used to obtain the perceptions of communication partners of individuals with dysphonia about the functional, physical and emotional handicap resulting from the patient experiencing dysphonia. METHOD The study included 160 individuals with dysphonia and their communication partners. First, translation, back translation, expert validity and pilot study were performed in the scale adaptation process. Then, a confirmatory factor analysis (CFA) was conducted to assess the construct validity of the VHI-P-TR. Correlations between the VHI-P-TR and Voice Handicap Index (VHI-TR) scores of dysphonic individuals were examined to evaluate the concurrent validity of the VHI-P-TR. To assess the reliability of the VHI-P-TR, a test-retest analysis was performed, and internal consistency coefficients (α) were calculated. A receiver operating characteristic (ROC) analysis was conducted to determine the cut-off point for the VHI-P scores. RESULTS A high positive correlation was found between the participants' VHI-P-TR and VHI-TR total and subscales mean scores (r's > 0.782; p < 0.01). The VHI-P-TR had high internal consistency regarding for its subscales and total score (α's > 0.94; p < 0.01). Factor loadings of all VHI-P-TR items were higher than 0.30 and their error variances were lower than 0.90. In addition, factor loadings were statistically significant for all the items (p < 0.05). The data fit the model well according to all CFA indices except for GFI (scale = 0.69). An adequate sensitivity and specificity were achieved for the VHI-P-TR, and the cut-off point was found as 11.50 for the total score and ranged from 2.50 to 5.50 for the subscales. CONCLUSION The VHI-P-TR is a valid and reliable measurement tool with high diagnostic performance in all subscales and total score, and has high levels of agreement with the VHI-TR.
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Affiliation(s)
- Tuğba Kaya
- University of Health Sciences, Speech and Language Deparment, İstanbul, Türkiye.
| | - Göksu Yılmaz
- Uskudar University, Speech and Language Deparment, İstanbul, Türkiye
| | - Richard I Zraick
- University of Central Florida, School of Communication Sciences and Disorders, Orlando, United States of America
| | - Ahmet Konrot
- Uskudar University, Speech and Language Deparment, İstanbul, Türkiye
| | - Mehmet Emrah Cangi
- University of Health Sciences, Speech and Language Deparment, İstanbul, Türkiye
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Tumer G, Kaya T, Ozmen F. The Effect Of Training On The Use Of Oral Nutrition Supplements (Ons) On Nutritional Therapy. Clin Nutr ESPEN 2023. [DOI: 10.1016/j.clnesp.2022.09.277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/28/2023]
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Ergenc Z, Ergenc H, Öztürk A, Kaya T, Nalbant A, Karacaer C, Günay S, Usanmaz M, Hakkı Tör I, Alkılınç E, Araç S, Kaya G, Yaylacı S, Kalpakçı Y, Çekiç D, Toçoğlu A, Altaş A, Genç AB. The effect of thrombosis-related laboratory values on mortality in COVID-19 infection. Eur Rev Med Pharmacol Sci 2023; 27:2699-2705. [PMID: 37013789 DOI: 10.26355/eurrev_202303_31808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/05/2023]
Abstract
OBJECTIVE COVID-19 may cause thrombosis in both venous and arterial systems. Familiarity with the signs and symptoms of thrombosis and its treatment is essential in treating COVID-19 infection and its complications. D-Dimer and mean platelet volume (MPV) are measurements related to the development of thrombosis. This study investigates whether MPV and D-Dimer values could be used to determine the risk of thrombosis and mortality in the COVID-19 early stages. PATIENTS AND METHODS 424 patients who were COVID-19 positive, according to the World Health Organization (WHO) guidelines, were randomly and retrospectively included in the study. Demographic and clinical characteristics such as age, gender, and length of hospitalization were obtained from the digital records of participants. Participants were divided into living and deceased groups. The patients' biochemical, hormonal, and hematological parameters were analyzed retrospectively. RESULTS White blood cells (WBC), neutrophils, and monocytes were significantly different in the two groups (p-value <0.001), and their values were lower in the living group than in the deceased group. MPV median values did not differ according to prognosis (p-value = 0.994). While the median value was 9.9 in the survivors, it was 10 in the deceased. Creatinine, procalcitonin, ferritin, and the number of hospitalization days in living patients were significantly lower than in patients who died (p-value <0.001). Median values of D-dimer (mg/L) differ according to prognosis (p-value <0.001). While the median value was 0.63 in the survivors, it was found as 438 in the deceased. CONCLUSIONS Our results did not show any significant relationship between the mortality of COVID-19 patients and their MPV levels. However, a significant association between D-Dimer and mortality in COVID-19 patients was observed.
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Affiliation(s)
- Z Ergenc
- Department of Internal Medicine, Yalova State Hospital, Yalova, Turkey.
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Çulha G, Doğramacı AÇ, Kaya T, Seçinti İE. A Case of Leishmania Infantum Mimicking Lymphoma. Indian J Dermatol 2023; 68:91-94. [PMID: 37151251 PMCID: PMC10162717 DOI: 10.4103/ijd.ijd_306_22] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/09/2023] Open
Abstract
Leishmaniasis is a parasitic infection caused by an obligate intracellular protozoon transmitted by infected sand flies. Cutaneous leishmaniasis (CL) is a skin disease known in our country as oriental sore, which heals, leaving a scar in place, mainly on the skin and sometimes in the mucous membrane. Demonstration of the parasite in chronic CL is difficult. Moreover, differential diagnosis from other granulomatous dermatitides such as lupus vulgaris, sarcoidosis and deep mycosis is growing difficult. A case of CL was presented in an 84-year-old female patient who had a pre-diagnosis of lymphoma and a nodule lesion on her forehead for 2.5 months. In the smear of the sample taken from the lesion, amastigote forms of the parasite were diagnosed and typed as L. infantum by the Real-Time Polymerase Chain Reaction (RT-PCR) method.
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Affiliation(s)
- Gülnaz Çulha
- From the Department of Parasitology, Faculty of Medicine, Hatay Mustafa Kemal University, Antakya, Hatay, Turkey
| | - A. Çiğdem Doğramacı
- Department of Dermatology, Faculty of Medicine, Hatay Mustafa Kemal University, Antakya, Hatay, Turkey
| | - Tuğba Kaya
- From the Department of Parasitology, Faculty of Medicine, Hatay Mustafa Kemal University, Antakya, Hatay, Turkey
| | - İlke Evrim Seçinti
- Department of Pathology, Faculty of Medicine, Hatay Mustafa Kemal University, Antakya, Hatay, Turkey
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Karacaer C, Sert H, Demirci T, Varım C, Kaya G, Genc AB, Ergenc DCH, Ergenc Z, Yaylacı S, Nalbant A, Kaya T, Demirci A, Oztop KE. The significance of a novel inflammatory biomarker, presepsin, in predicting disease prognosis in patients with COVID-19. Eur Rev Med Pharmacol Sci 2022; 26:8612-8619. [PMID: 36459042 DOI: 10.26355/eurrev_202211_30398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
OBJECTIVE This study aims at determining the significance of a novel inflammatory biomarker, presepsin, in predicting disease prognosis in patients with COVID-19. PATIENTS AND METHODS This retrospective study was concluded at the University Hospital between April and August 2020. The study involved 88 COVID-19 patients (48 men and 40 women). The patients were categorized into two groups: the patients admitted to the COVID-19 clinic, described as the moderate COVID-19 patients (Group-1; n=44), and those admitted to the internal medicine outpatient clinic, who were the mild COVID-19 patients (Group-2; n=44). The groups were compared using inflammatory markers: presepsin, C-Reactive Protein to Albumin Ratio, Neutrophil to Lymphocyte Ratio, and procalcitonin. RESULTS Serum presepsin levels (195.29 vs. 52.12 pg/ml) were significantly higher in the Group-1 compared to the Group-2 (p=0.001). The gender distribution and average age were similar in both groups (p > 0.05). While ferritin, lactate dehydrogenase, D-Dimer, platelet lymphocyte ratio, C-Reactive Protein to Albumin Ratio (p=0.001), erythrocyte sedimentation ratio, C-Reactive Protein and presepsin were significantly higher in the Group-1 compared to Group-2 (p<0.05), while hemoglobin and lymphocyte were significantly lower in the Group-1 than in Group-2 (p<0.05). CONCLUSIONS Serum presepsin levels were found to be significantly higher in moderate clinical group COVID-19 patients compared to mild group. Presepsin, a new inflammatory biomarker, may be useful in predicting the prognosis and early treatment of COVID-19 infection.
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Affiliation(s)
- C Karacaer
- Department of Internal Medicine, Faculty of Medicine, Department of Internal Medicine Nursing, Faculty of Health Science, Sakarya University, Sakarya, Turkey.
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Ergenc Z, Ergenc H, Araç S, Tör IH, Usanmaz M, Alkılınç E, Karacaer C, Kaya T, Nalbant A, Görgün S, Öztürk A, Yıldırım I. Predictors of disease severity, clinical course, and therapeutic outcome in COVID-19 patients: our experience with 1,700 patients. Eur Rev Med Pharmacol Sci 2022; 26:8180-8187. [PMID: 36394767 DOI: 10.26355/eurrev_202211_30171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
OBJECTIVE Our study aimed at investigating the impacts of demographic, hematological, and biochemical factors on the clinical course and the prognostic outcome in adult COVID-19 patients. PATIENTS AND METHODS This retrospective study was performed in the internal medicine departments of two hospitals, and data were extracted from the medical files of 1,700 adult COVID-19 patients (836 females, 49.2%; 864 males, 50.8%) with an average age of 48.23 ± 16.68 (range: 18-93). Clinical data included baseline descriptives, prior medical history, admission date, treatment, and hematological and biochemical blood test results. The relationship between the survival, length of hospitalization, hematological, and biochemical parameters was investigated. RESULTS Advanced age (p<0.001), presence of at least on comorbid disease (p=0.045), increased length of hospitalization (p=0.006), elevated white blood cell (p=0.001) and neutrophil (p=0.002) counts, increased serum levels of glucose (p=0.027), blood urea nitrogen (p<0.001), AST (p=0.006), LDH (p<0.001), CRP (p>0.001), and D-dimer (p=0.001). In contrast, diminution of serum levels of albumin (p<0.001), ALT (p=0.028), calcium (p=0.022), and platelet count (p=0.010) were associated with increased mortality. There was a positive and weak relationship between serum D-dimer levels and length of hospitalization. CONCLUSIONS Our data imply that identifying and validating indicators that predict COVID-19 disease progression to improve health outcomes is crucial. Age, comorbidities, immunological response, radiographic abnormalities, laboratory markers, and signs of organ dysfunction may all predict poor outcomes individually or collectively. Identifying characteristics that predict COVID-19 problems is critical to guiding clinical management, improving patient outcomes, and allocating limited resources.
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Affiliation(s)
- Z Ergenc
- Department of Internal Medicine, Ayancık Government Hospital, Sinop, Turkey.
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Acar BA, Acar T, Vatan MB, Aras YG, Ulaş SB, Eryılmaz HA, Dalkılıç Ş, Zafer AP, Turhan O, Vatan A, Varım P, Kaya T. Predictive value of systemic immune-inflammation index for cerebral reperfusion and clinical outcomes in patients with acute ischemic stroke undergoing endovascular treatment. Eur Rev Med Pharmacol Sci 2022; 26:5718-5728. [PMID: 36066145 DOI: 10.26355/eurrev_202208_29507] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE The systemic immune inflammation (SII) index has been an excellent prognostic indicator in patients with acute ischemic stroke (AIS). In this study, we assessed the utility of the SII in predicting the prognosis and reperfusion status of patients with AIS who underwent endovascular treatment (EVT). PATIENTS AND METHODS 123 consecutive AIS patients were enrolled in our study. The receiver-operating characteristics (ROC) curve was used to determine the cut-off value of SII for predicting unsuccessful cerebral reperfusion. Multivariate logistic regression analysis analyzed the association between SII and unsuccessful reperfusion rate after EVT. RESULTS The median value of SII was significantly higher in patients with unsuccessful reperfusion compared to patients with successful reperfusion [2,029 (1,217-2,771) vs. 1,172 (680-2,145) respectively, p=0.003)]. A ROC curve analysis showed that the best cut-off value of SII for predicting unsuccessful reperfusion status was 1,690, with sensitivity and specificity of 71% and 69%, respectively. The area under the curve (AUC) was 0.673 (95% CI; 0.552-0.793). Multivariate analysis demonstrated that SII ≥ 1,690 value was an independent predictor of unsuccessful cerebral reperfusion and unfavorable clinical outcome after EVT (Hazard ratio - H.R.=3.713, 95% CI: 1.281-10.76, p=0.016, HR=2.28, 95% CI: 1.06-4.88, p=0.035, respectively). CONCLUSIONS We suggested that SII is a potential indicator to predict the unsuccessful cerebral reperfusion and unfavorable clinical outcome for patients with AIS undergoing EVT.
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Affiliation(s)
- B A Acar
- Department of Neurology, Department of Cardiology, Department of Infectious Disease, Department of Internal Medicine, Sakarya University Training and Research Hospital, Sakarya, Turkey.
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Karacaer C, Yaylaci S, Issever K, Sert H, Suner KO, Cokluk E, Nalbant A, Demirci T, Varim C, Kaya T. The novel biomarker, neopterin, can predict the severity of COVID-19. Eur Rev Med Pharmacol Sci 2022; 26:5568-5573. [PMID: 35993654 DOI: 10.26355/eurrev_202208_29428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
OBJECTIVE SARS-CoV-2 infection primarily affects T-lymphocytes, particularly CD4+ and CD8+ T cells. However, there is a need for simpler and less expensive laboratory tests with predictive values comparable to CD4+ cell counts. Thus, the goal of this study was to investigate the role of neopterin levels in predicting intensive care and mortality in coronavirus disease patients in 2019. PATIENTS AND METHODS This retrospective study included 87 hospitalized patients who were diagnosed with COVID-19. Patients were divided into two groups: those receiving intensive care (Severe COVID-19; S-COVID-19) and those receiving non-intensive care (Moderate COVID-19; M-COVID-19). Patients' clinical characteristics, serum neopterin levels, and other laboratory data were compared across groups. RESULTS The average age was 63.9±155.2 years, and 44 (%) of the participants were male. WBC (p = 0.008), neutrophil (p = 0.002), HDL (p = 0.009), ferritin, calcium, albumin, LDH, APTT, lymphocyte, INR, D-dimer, troponin, prothrombin time sedimentation, and PaO2 (p = 0.001) were all associated with death. The neopterin level in the M-COVID-19 group was 3 (min-max; 3.1-5.9) and 3.2 (2.3-7) in the S-COVID-19 group, with no statistically significant difference (p = 0.456). Gender differences between groups were not significant (p = 0.183). According to the ROC analysis, if parameters such as age, D-Dimer, troponin, ferritin, albumin, LDH, CRP, procalcitonin, and PaO2 exceed the cut-off values and lymphocyte levels are below, it can predict the need for intensive care and mortality in COVID-19 patients. CONCLUSIONS Although we did not find statistically significant results with neopterin in terms of mortality in COVID-19 individuals in our study, more thorough, prospective, randomized controlled studies with expanded patient populations at various phases of the disease are needed.
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Affiliation(s)
- C Karacaer
- Department of Internal Medicine, Sakarya Research and Training Hospital, Sakarya, Turkey.
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Çulha G, Kaya T, Özpınar N. Investigation of Leishmania RNA Virus 2 (LRV2) in Cutaneous Leishmaniasis Strains Isolated from Hatay, Turkey. Iran J Parasitol 2022; 17:436-439. [PMID: 36466020 PMCID: PMC9682377 DOI: 10.18502/ijpa.v17i3.10638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/18/2022] [Accepted: 07/26/2022] [Indexed: 06/17/2023]
Abstract
The Article Abstract is not available.
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Affiliation(s)
- Gülnaz Çulha
- Department of Parasitology, Faculty of Medicine, Hatay Mustafa Kemal University, Hatay, Antakya, Turkey
| | - Tuğba Kaya
- Department of Parasitology, Faculty of Medicine, Hatay Mustafa Kemal University, Hatay, Antakya, Turkey
| | - Necati Özpınar
- Department of Emergency Aid and Disaster Management, Faculty of Health Sciences, Hatay Mustafa Kemal University, Hatay, Antakya, Turkey
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Cangi ME, Yılmaz G, Tabak E, Nur Duran A, Kaya T. Effect of Varied Tube Phonation in Water Exercises on Nasometric and Electroglottographic parameters: Modification in Terms of Fluid Density and Tube Submerged Depth. J Voice 2022:S0892-1997(22)00119-9. [PMID: 35623981 DOI: 10.1016/j.jvoice.2022.04.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2021] [Revised: 04/15/2022] [Accepted: 04/18/2022] [Indexed: 11/18/2022]
Abstract
OBJECTIVE Within the scope of semi-occluded vocal tract exercises (SOVTEs), we aimed to examine the effects of four exercise combinations, which involved various fluid densities and tube submersion depths, on acoustic and electroglottographic (EGG) parameters. METHODS Four procedures (P) were applied consecutively to 30 female participants with normal voices using different tube submersion depths and fluid densities, including P1 (2 cm, water), P2 (2 cm, nectar), P3 (10 cm, water), and P4 (10 cm, nectar). Nasometric (Nasometer II model 6450) and EGG (Electroglottograph model 6103) measurements were taken before the procedures were initiated (pre-test) and at the end of each procedure. In addition, EGG measurements were taken for each procedure during the application. RESULTS For all three velar positions (oral passage, oro-nasal passage, nasal passage), the only procedure that caused a significant change compared to the pre-test stage in regard to nasalance score was P2 (2 cm nectar) in common. All other procedures except P1 (2 cm water) significantly increased velar closure compared to pre-test levels. However, when the differences between the exercises were examined, the least velar closure, compared to the other procedures, was obtained after P4 (10 cm nectar). While there was no significant difference between the procedures in the EGG measurements during the exercise, a significantly higher tendency to contact was observed after the procedures with a denser consistency, and an increase in the fundamental frequency (fo) values occurred in the pairwise comparisons of the procedures in the measurements after the exercises. CONCLUSION In SOVTEs in which water phonation is performed with a tube, the use of a fluid with a consistency denser than water can be considered a particularly promising approach. In addition, exercises performed with increasing consistencies in 2 cm depth can provide more vocal cord and velopharyngeal port closure by increasing EGG-CQ and nasalance score values. However, more care should be taken while increasing the consistency at a submersion depth of 10 cm.
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Affiliation(s)
- Mehmet Emrah Cangi
- University of Health Sciences, Speech and Language Therapy, İstanbul, Turkey.
| | - Göksu Yılmaz
- Uskudar University, Speech and Language Therapy, İstanbul, Turkey
| | - Emine Tabak
- Uskudar University, Speech and Language Therapy, İstanbul, Turkey
| | - Ayşe Nur Duran
- Uskudar University, Speech and Language Therapy, İstanbul, Turkey
| | - Tuğba Kaya
- University of Health Sciences, Speech and Language Therapy, İstanbul, Turkey
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Varim C, Celik FD, Sunu C, Öztop KE, Aydın A, Yaylaci S, Karacaer C, Gülbagcı B, Demirci A, Kaya T, Nalbant A. The role of neutrophil albumin ratio in predicting the stage of non-small cell lung cancer. Eur Rev Med Pharmacol Sci 2022; 26:2900-2905. [PMID: 35503633 DOI: 10.26355/eurrev_202204_28621] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
OBJECTIVE Inflammation forms the basis of cancer development and progression. It causes changes in complete blood count parameters, such as neutrophil counts. Low albumin levels are associated with poor prognosis in cancer patients. We aimed to investigate the association between neutrophil to albumin ratio (NAR) and the stage of non-small cell lung cancer (NSCLC). PATIENTS AND METHODS 257 NSCLC patients (24 females and 198 males) were included in the study. Patients were divided into two groups. Group 1 (n=61) included patients with early stage cancer (stage 1 and 2), while group 2 (n=196) included those with advanced stage cancer (stage 3 and 4). Demographic data, neutrophil, lymphocyte, platelet, white blood cell counts (WBC), C-reactive protein (CRP), erythrocyte sedimentation rate (ESR), ferritin and albumin levels at the time of diagnosis were recorded. The NAR of 2 groups were compared. RESULTS There were no significant differences between the lymphocyte count (2.0 vs. 2.0 103/mm3) and platelet count (291 vs. 311 103/mm3) of the two groups (p > 0.05). ESR (38.8 vs. 57.5 mm/h), CRP (158 vs. 57 mg/l), ferritin (85 vs. 261 ng/ml), WBC count (8.6 vs. 10.6 103/mm3), neutrophil count (5.6 vs. 7.5 103/mm3), albumin values (2.9 vs. 3.7 gr/dl), and (p < 0.05) NAR levels (1.6 vs. 2.3) (p < 0.05) were significantly higher in group 2. CONCLUSIONS NAR can be used in predicting the stage of NSCLC.
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Affiliation(s)
- C Varim
- Department of Internal Medicine, Sakarya University Medicine Faculty, Sakarya, Turkey.
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Yazıcı D, Fersahoğlu MM, Fersahoğlu T, Bulut NE, Çiğiltepe H, Çeler Ö, Sancak S, Sulu C, Durcan E, Şahin S, Polat Korkmaz Ö, Bozdoğan Polat SH, Taşkın E, İşeri C, Gürsoy E, Küçük Yetgin M, Kaya T, Özdemir F, Mestanoğlu İstanbullu N, Kıyıcı S, Öztürk S, Güngör K, Can B, Sargın M, Tabak Z, Averi S, Nazlı A, Polat Y, Akbas F, Tekin S, Topaloğlu Ö, Boz Uzaldı E, Çatalçam S, Bayraktaroğlu T, Çalıkoğlu BF, Nasifova V, Soyluk Selçukbiricik Ö, Karşıdağ K, Sezer H, Özışık S, Bulut H, Bekdemir B, Deyneli O, Dinçer C, Gogas Yavuz D, İlkova H, Yumuk VD. Status of Weight Change, Lifestyle Behaviors, Depression, Anxiety, and Diabetes Mellitus in a Cohort with Obesity during the COVID-19 Lockdown: Turk-Com Study Group. Obes Facts 2022; 15:528-539. [PMID: 35545017 PMCID: PMC9372476 DOI: 10.1159/000522658] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/11/2021] [Accepted: 02/07/2022] [Indexed: 11/19/2022] Open
Abstract
INTRODUCTION The coronavirus disease 2019 (COVID-19) pandemic led to a lockdown period. Confinement periods have been related to unhealthy lifestyle behaviors. Our study aimed to determine weight change, changes in eating and exercise habits, the presence of depression and anxiety, and diabetes mellitus (DM) status in a cohort of patients with obesity. METHODS The study was undertaken in nine centers of Collaborative Obesity Management (COM) of the European Association for the Study of Obesity (EASO) in Turkey. An e-survey about weight change, eating habits, physical activity status, DM status, depression, and anxiety was completed by patients. The International Physical Activity Questionnaire (IPAQ) score was used to determine physical activity in terms of metabolic equivalents (METs). A healthy nutrition coefficient was calculated from the different categories of food consumption. The Patient Health Questionnaire (PHQ-9) and General Anxiety Disorder (GAD-7) Questionnaire were used for determining depression and anxiety, respectively. RESULTS Four hundred twenty-two patients (age 45 ± 12.7 years, W/M = 350/72) were included. The healthy nutrition coefficient before the pandemic was 38.9 ± 6.2 and decreased to 38.1 ± 6.4 during the pandemic (p < 0.001). Two hundred twenty-nine (54.8%) patients gained weight, 54 (12.9%) were weight neutral, and 135 (32.3%) lost weight. Patients in the weight loss group had higher MET scores and higher healthy nutrition coefficients compared with the weight gain and weight-neutral groups (p < 0.001). The PHQ and GAD scores were not different between the groups. Percent weight loss was related to healthy nutrition coefficient (CI: 0.884 [0.821-0.951], p = 0.001) and MET categories (CI: 0.408 [0.222-0.748], p = 0.004). One hundred seventy patients had DM. Considering glycemic control, only 12 (8.4%) had fasting blood glucose <100 mg/dL and 36 (25.2%) had postprandial BG <160 mg/dL. When patients with and without DM were compared in terms of dietary compliance, MET category, weight loss status, PHQ-9 scores, and GAD-7 scores, only MET categories were different; 29 (11.7%) of patients in the nondiabetic group were in the highly active group compared with 5 (2.9%) in the diabetic group. CONCLUSION The COVID-19 lockdown resulted in weight gain in about half of our patients, which was related to changes in physical activity and eating habits. Patients with DM who had moderate glycemic control were similar to the general population in terms of weight loss but were less active.
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Affiliation(s)
- Dilek Yazıcı
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
- *Dilek Yazıcı,
| | - Mehmet Mahir Fersahoğlu
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Tuba Fersahoğlu
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Nuriye Esen Bulut
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Hüseyin Çiğiltepe
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Özgen Çeler
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Seda Sancak
- Health Sciences University Fatih Sultan Mehmet Education and Research Hospital COM, Istanbul, Turkey
| | - Cem Sulu
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | - Emre Durcan
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | - Serdar Şahin
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | | | | | - Eren Taşkın
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | - Ceren İşeri
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | - Evren Gürsoy
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
| | | | - Tuğba Kaya
- Health Sciences University Bursa Yİ Education and Research Hospital COM, Bursa, Turkey
| | - Feyza Özdemir
- Health Sciences University Bursa Yİ Education and Research Hospital COM, Bursa, Turkey
| | | | - Sinem Kıyıcı
- Health Sciences University Bursa Yİ Education and Research Hospital COM, Bursa, Turkey
| | - Serkan Öztürk
- Medeniyet University Göztepe Education and Research Hospital COM, Istanbul, Turkey
| | - Kağan Güngör
- Medeniyet University Göztepe Education and Research Hospital COM, Istanbul, Turkey
| | - Bülent Can
- Medeniyet University Göztepe Education and Research Hospital COM, Istanbul, Turkey
| | - Mehmet Sargın
- Medeniyet University Göztepe Education and Research Hospital COM, Istanbul, Turkey
| | - Zeynep Tabak
- Health Sciences University Istanbul Education and Research Hospital COM, Istanbul, Turkey
| | - Sevda Averi
- Health Sciences University Istanbul Education and Research Hospital COM, Istanbul, Turkey
| | - Aysun Nazlı
- Health Sciences University Istanbul Education and Research Hospital COM, Istanbul, Turkey
| | - Yeliz Polat
- Health Sciences University Istanbul Education and Research Hospital COM, Istanbul, Turkey
| | - Feray Akbas
- Health Sciences University Istanbul Education and Research Hospital COM, Istanbul, Turkey
| | - Sakin Tekin
- Bülent Ecevit University Medical Faculty COM, Zonguldak, Turkey
| | | | - Ebru Boz Uzaldı
- Bülent Ecevit University Medical Faculty COM, Zonguldak, Turkey
| | - Safiye Çatalçam
- Bülent Ecevit University Medical Faculty COM, Zonguldak, Turkey
| | | | | | | | | | | | - Havva Sezer
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
| | - Seçil Özışık
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
| | - Hande Bulut
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
| | - Bahar Bekdemir
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
| | - Oğuzhan Deyneli
- Koç University Medical School COM (EASO Collaborating Centre for Obesity Management), Istanbul, Turkey
| | - Ceyda Dinçer
- Marmara University Medical Faculty COM, Istanbul, Turkey
| | | | - Hasan İlkova
- Cerrahpaşa Medical Faculty COM, Istanbul, Turkey
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Taber C, Senbel S, Ezzeddine D, Nolan J, Ocel A, Artan NS, Kaya T. Sleep and Physical Performance: A Case Study of Collegiate Women's Division 1 Basketball Players. Annu Int Conf IEEE Eng Med Biol Soc 2021; 2021:6787-6790. [PMID: 34892666 DOI: 10.1109/embc46164.2021.9630820] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
In this work, we present a case study to evaluate the connections between sleep, training load, and the perceptions of physical/emotional state of a collegiate, division 1 Women's basketball team. The study took place during the off- (3 weeks) and pre-season (6 weeks) while sleep was tracked using WHOOP wearable straps. Training load was recorded by the strength coach and athletes. Short Recovery and Short Stress (SRSS) questionnaire was used to evaluate the perceptions of athletes on their own emotional and physical states. Our results showed that heart rate measurements are associated with stress levels and recovery perception. We also discovered that the training load was not linked to the sleep variables without the considerations of athletic performance. However, training load may alter perceived stress and recovery which requires further exploration.
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Çabalak M, Çulha G, Bal T, Kaya T, Çelik E. Cutaneous Leishmaniasis with Mucosal Involvement. Turkiye Parazitol Derg 2021; 45:227-229. [PMID: 34346882 DOI: 10.4274/tpd.galenos.2021.21931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Leishmaniasis is a protozoan parasitic disease transmitted to humans by infected female sand flies. Turkey has received more than three million immigrants from Syria because of the civil war and political instability. This study reported cases of two patients, who were from Syria and lived in Hatay, with cutaneous leishmaniasis and mucosal involvement. Two patients presented to the infectious diseases clinic with a complaint of facial lesions and were subsequently referred to the parasitology department laboratory. Smears were prepared from the lesions, stained with Giemsa and examined under a microscope. Moreover, aspirates taken from the patients' lesions were inoculated into the modified Novy-MacNeal-Nicolle medium. The diagnosis was made when amastigotes were detected in both smears. Proliferation of promastigotes was observed in one of the clinical specimens inoculated on the medium. By PZR-RFLP, Leishmania tropica were detected in the isolate. Both patients were treated with amphotericin B. One patient was treated again with a pentavalent antimony compound because of the recurrence of the lesion.
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Affiliation(s)
- Mehmet Çabalak
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Enfeksiyon Hastalıkları ve Klinik Mikrobiyoloji Anabilim Dalı, Hatay, Türkiye
| | - Gülnaz Çulha
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Hatay, Türkiye
| | - Tayibe Bal
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Enfeksiyon Hastalıkları ve Klinik Mikrobiyoloji Anabilim Dalı, Hatay, Türkiye
| | - Tuğba Kaya
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Hatay, Türkiye
| | - Ebru Çelik
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Deri ve Zührevi Hastalıkları Anabilim Dalı, Hatay, Türkiye
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Çulha G, Kaya T, Doğramacı AÇ. Genotyping of Cutaneous Leishmaniasis Cases Detected Before and After Migration with Real-Time Polymerase Chain Reaction in Hatay. Turkiye Parazitol Derg 2020; 44:48-51. [PMID: 32212594 DOI: 10.4274/tpd.galenos.2020.6650] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Objective Leishmania tropica (L. tropica) and Leishmania infantum (L. infantum) are the species causing cutaneous Leishmaniasis (CL) in Turkey. There was a wave of immigration due civil war in Syria in 2011. Migration from Syria, where CL is endemic, to other countries is thought to affect the number of CL cases and species diversity. The aim of the study was to typify the samples of CL positive, pre-migration and post-migration Turkish patients and importe (Syrian) patients whose smears were found in the archive and to reveal the difference of CL species before and after migration in Hatay. Methods Smears of a total of 150 patients (50 Turkish patients before migration, 50 Turkish patients after migration and 50 Syrian patients) which had been prepared with dermal scraping, stained with Giemsa and determined as CL positive by microscope examination were included in the study. DNA isolation of selected preparations was performed and GZ-PZR analysis with ITS-1probe was performed for species determination. Results L. infantum/donovani was detected in 40 (80%), L. tropica in 8 (16%), and L. major in 2 (4%) of the samples belonging to pre-immigration Turkish patients. L. infantum/donovani was detected in 28 (56%), L. major in 3 (6%) and L. tropica in 19 (%38) of the samples belonging to post-immigration Turkish patients. L. infantum/donovani was detected in 2 (4%), L. major in 1 (2%) and L. tropica in 47 (94%) of the samples belonging to Syrian patients. Conclusions It was observed that in local cases in Hatay before immigration, L. infantum/donovani was the common species that caused CL and that after immigration L. tropica began to raise and that L. major was more encountered than before. It was concluded that Syrians coming to Hatay may have caused diversity in the Leishmania species which were the causative agents of CL, and that further research was needed on the subject.
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Affiliation(s)
- Gülnaz Çulha
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Hatay, Türkiye
| | - Tuğba Kaya
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Hatay, Türkiye
| | - Asena Çiğdem Doğramacı
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Deri ve Zührevi Hastalıkları Anabilim Dalı, Hatay, Türkiye
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18
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Çulha G, DoĞramaci AÇ, Hakverdİ S, SeÇİntİ İE, AslantaŞ Ö, Çelİk E, Kaya T. The Investigation of the Association of Cutaneous Leishmaniasis in Biopsy Specimens of the Patients with Granulomatous Disease and Skin Cancer Using the Molecular Method. Iran J Parasitol 2020; 15:307-314. [PMID: 33082794 PMCID: PMC7548460 DOI: 10.18502/ijpa.v15i3.4194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Background Clinically, cutaneous leishmaniasis (CL) can be confused with granulomatous diseases and skin cancers, and it may lead to erroneous diagnosis and treatment. Diagnosis based and histopathology can have some difficulties due to low number of parasites, especially in chronic CL cases. We aimed to emphasize the necessity of considering CL in the differential diagnosis for cases of granulomatous diseases and basal cell carcinoma, particularly in areas where CL is endemic. Methods One hundred and seven paraffin-embedded tissue biopsy specimens were selected from the archive, as of 2002, of Pathology Department, School of Medicine, University of Hatay Mustafa Kemal in Hatay, Turkey. After DNA isolation, performed with the samples were used for PCR analysis with specific 13A, 13B primers targeting kinetoplastid DNA (kDNA) found in all Leishmania species. Another PCR was performed with LITSR and L5.8S primers targeting ITS-1 internal-transcribed-spacer-1 (ITS-1) region to subtype positive samples. Then these samples were further analyzed for subtyping with PCR-RFLP using HaeIII enzyme (BsuRI). Results Ten out of 107 tissue specimens were positive via kDNA-PCR. Lupus vulgaris, sarcoidosis, skin lymphoma and Leishmania cutis appeared in 9 out of 10 positive specimens. One of the cases presented with a mass on the cheek and was pre-diagnosed with hemangioma, but leishmaniasis did not appear. All of 10 specimens were diagnosed as granulomatous dermatitis. Two out of 10 samples, found positive with kDNA-PCR, were analyzed with ITS-1-PCR and identified as L. infantum/donovani after RFLP. Conclusion Molecular methods should be utilized in the differential diagnosis of CL to eliminate false diagnoses of granulomatous diseases and skin cancers.
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Affiliation(s)
- Gülnaz Çulha
- Department of Parasitology, School of Medicine, University of Hatay Mustafa Kemal, Hatay, Turkey
| | - Asena Çiğdem DoĞramaci
- Department of Dermatology, School of Medicine, University of Hatay Mustafa Kemal, Hatay, Turkey
| | - Sibel Hakverdİ
- Department of Medical Pathology, School of Medicine, University of Hatay Mustafa Kemal, Hatay, Turkey
| | - İlke Evrim SeÇİntİ
- Department of Medical Pathology, School of Medicine, University of Hatay Mustafa Kemal, Hatay, Turkey
| | - Özkan AslantaŞ
- Department of Microbiology, School of Veterinary Science, University of Hatay Mustafa Kemal, Hatay, Turkey
| | - Ebru Çelİk
- Department of Dermatology, School of Medicine, University of Hatay Mustafa Kemal, Hatay, Turkey
| | - Tuğba Kaya
- Department of Parasitology, School of Medicine, University of Hatay Mustafa Kemal, Hatay, Turkey
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Yoneyama T, Tobisawa Y, Kaneko T, Kaya T, Hatakeyama S, Mori K, Sutoh Yoneyama M, Okubo T, Mitsuzuka K, Duivenvoorden W, Pinthus J, Hashimoto Y, Ito A, Koie T, Gardiner R, Ohyama C. Clinical significance of the LacdiNAc-glycosylated prostate-specific antigen assay for prostate cancer detection. EUR UROL SUPPL 2020. [DOI: 10.1016/s2666-1683(20)32909-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022] Open
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Özbilgin A, Çavuş İ, Kaya T, Yıldırım A, Harman M. Comparison of in vitro Resistance of Wild Leishmania İsolates, Which are Resistant to Pentavalent Antimonial Compounds, Against Drugs Used in the Treatment of Leishmaniasis. Turkiye Parazitol Derg 2020; 44:12-16. [PMID: 32212583 DOI: 10.4274/tpd.galenos.2019.6661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
OBJECTIVE Meglumine antimoniate (Glucantime®) and Sodium stibogluconate (Pentostam®) are used for the treatment of cutaneous leismaniasis in Turkey. There is a reported resistance to these drugs in recent years. The aim of the present study was to compare the in vitro sensitivities of resistant Leishmania isolates against Amphotericin B, Miltefosine, Meglumine Antimoniate, Paromomycin and Sodium Stibogluconate. METHODS Five Leishmania isolates of patients with cutaneous leishmaniasis, who showed no clinical recovery despite two consecutive meglumine antimoniate treatments, which were stored in the Parasite Bank in Manisa Celal Bayar University Medical Faculty were selected. They were genotyped with Real-Time PCR using specific primers and probes to ITS1 region. Drug resistance levels of each Leishmania isolate were analysed for Amphotericin B, Miltefosine, Meglumine Antimoniate, Paromomycin, and Sodium Stibogluconate at concentrations of 500, 250, 125, 50, 25 μg/mL with XTT method and hemocytometer. RESULTS It was observed that the resistant Leishmania tropica isolates showed no resistance to Amphotericin B, and were sensitive to Miltefosine, Sodium Stibogluconate, Paromomycin and Meglumin Antimonate, respectively. In addition, Leishmania tropica (MHOM/AZ/1974/SAF-K27) isolate of the control group could stay viable in none of the drug concentrations of five agents in the study. CONCLUSION It was determined that none of the selected resistant L. tropica isolates showed resistance to Amphotericin B and that was also shown statistically (p<0.05). The results of this study are important in guiding clinicians and researchers who conduct studies on drugs and search for new drug molecules.
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Affiliation(s)
- Ahmet Özbilgin
- Manisa Celal Bayar Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Manisa, Türkiye
| | - İbrahim Çavuş
- Manisa Celal Bayar Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Manisa, Türkiye
| | - Tuğba Kaya
- Hatay Mustafa Kemal Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Hatay, Türkiye
| | - Ahmet Yıldırım
- Manisa Celal Bayar Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Manisa, Türkiye
| | - Mehmet Harman
- Dicle Üniversitesi Tıp Fakültesi, Dermatoloji Anabilim Dalı, Diyarbakır, Türkiye
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Çulha G, Kaya T, Gülbol Duran G, Urhan Küçük M, Doğramacı AÇ, Tiyekli Çelik D. [Investigation of Polymerase Chain Reaction Method in Patients with Suspected Chronic Cutaneous Leishmania of Negative Microscopy]. MIKROBIYOL BUL 2019; 53:408-418. [PMID: 31709938 DOI: 10.5578/mb.68692] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Leishmaniasis is a parasitic disease that is transmitted to humans by the bites of infected female phlebotomine sandflies. In the diagnosis of cutaneous leishmaniasis (CL), in the smear samples, the demonstration of the parasite by microscope remains a gold standard method. However, it becomes difficult to diagnose the parasite since the number of amastigotes in chronic cases with a lesion of one year or longer is very low. Due to many factor such as patients primarily do not to take any notice these lesions in their bodies, do not apply to health institutions or late applied, receive wrong treatment; the diagnosis and treatment are delayed. In addition, it is been worse prognosis by add secondary infection to lesions and wounds become chronic. For this reason, molecular methods are used in addition to microscopic examination in chronic suspected CL cases. It was aimed to reveal of the molecular diagnostic value in chronic suspected CL cases by polymerase chain reaction (PCR) in the smear belonging to Turkish patients that reported to be evaluated clinically because it can not be seen Leishmania amastigotes in microscopic examination. Smear of 50 Turkish patients who were clinically reported of the evaluation of chronic CL were selected. These samples were smears belonging to suspected CL patients that applied Hatay Mustafa Kemal University, Faculty of Medicine, Parasitology laboratory from different polyclinics and were decided to be evaluated clinically as a result of microscopic examination because they came from endemic regions (such as Hassa, Altınözü, Yayladağı). DNA was isolated from selected samples and PCR was performed using 13A, 13B primers targeting the kinetoplastid DNA (kDNA) region. The samples found positive by PCR were typed by polymerase chain reaction-restriction fragment length polymorphism (PCR-RFLP) analysis using LITSR and L5.8S primers targeting internal transcribed spacer (ITS-1) region. Of the 50 smear samples, 17 (34%) were determined positive with 13A, 13B primers targeting the kinetoplastid DNA (kDNA) region. Positive samples were also found to be positive with LITSR and L5.8S primers targeting ITS-1 region. The PCR products obtained from PCR with ITS-1 gene region were digested with the restriction endonucleases BsuRI (HaeIII). As a result of PCR-RFLP analysis, it was determined that 11 of Leishmania tropica, one of Leishmania major and five of Leishmania infantum/donovani out of 17 samples. Chronic CL can be confused with skin diseases such as sarcoidosis, tuberculosis, malignant tumors. In particular, chronic CL cases can be escaped the attention for many reasons such as failure to diagnose correctly, insufficient microscope experience, fail to see due to low number of parasites. For this reason, it was concluded that PCR, which is a molecular method, should be used in chronic suspected CL samples which are negative for the parasite by microscopic examination.
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Affiliation(s)
- Gülnaz Çulha
- Hatay Mustafa Kemal University Faculty of Medicine, Department of Parasitology, Hatay, Turkey
| | - Tuğba Kaya
- Hatay Mustafa Kemal University Faculty of Medicine, Department of Parasitology, Hatay, Turkey
| | - Gülay Gülbol Duran
- Hatay Mustafa Kemal University Faculty of Medicine, Department of Medical Biology, Hatay, Turkey
| | - Meral Urhan Küçük
- Hatay Mustafa Kemal University Faculty of Medicine, Department of Medical Biology, Hatay, Turkey
| | - Asena Çiğdem Doğramacı
- Hatay Mustafa Kemal University Faculty of Medicine, Department of Dermatology, Hatay, Turkey
| | - Dilek Tiyekli Çelik
- Trakya University Institute of Health Sciences, Department of Immunology, Edirne, Turkey
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22
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Çulha G, Doğramacı AÇ, Kaya T, Çavuş İ, Gülkan B, Özbilgin A. [Imported cutaneous leishmaniasis cases detected in truck drivers in Hatay]. MIKROBIYOL BUL 2019; 52:316-323. [PMID: 30156518 DOI: 10.5578/mb.66937] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Leishmaniasis, seen in tropical and subtropical regions, is an infectious disease caused by the protozoan parasite Leishmania species. There are three main forms of leishmaniasis: cutaneous, mucocutaneous and visceral leishmaniasis. Cutaneous leishmaniasis (CL) has become an increasing problem as the number of travels around the world increases and people go to work in endemic areas. Turkey has received great numbers of immigrants in recent years, from its neighboring countries like Iraq, Islamic Republic of Iran, Afghanistan, Turkmenistan and the Syrian Arab Republic because of the political instabilities in these countries as well as the job opportunities caused by large-scale development projects undertaken by Turkey. In this report, imported CL cases detected in five truck drivers transporting from Hatay to Turkmenistan, Syria, Saudi Arabia, Iran and Georgia, Uzbekistan and Azarbaijan countries were presented. The patients admitted to Mustafa Kemal University, Faculty of Medicine Dermatology Policlinic, with wound complaints on their bodies were directed to the Department of Parasitology to obtain smear samples from their wounds. The age range of the patients were 38 to 43 years. Patients with wound trail for a period ranging from one month to one year had a number of lesions varying between 2-7 and in all cases, a smear preparation was prepared from the lesions for diagnostic purposes. Clinical material obtained from five patients with pre-diagnosis of CL was firstly examined with Giemsa stain. Samples taken from the patients were inoculated into modified NNN (Novy-MacNeal-Nicolle) medium for the evaluation of the presence of the promastigotes. Promastigotes obtained from the inoculated medium were also genotyped using the ITS1 region. In all of the slides prepared from the clinical material taken from the patients amastigotes were determined. The growth of promastigotes were observed in only three of the clinical specimen inoculated media. The genotyped three species were Leishmania tropica, Leishmania infantum/donovani and Leishmania major. In this study, the importance of support for the diagnosis of different microbiological methods used in the diagnosis of leishmaniasis infection which occurred during the outbreaks of the disease has been put forward. In addition, it was aimed to draw attention to the importance of imported CL cases in our country diagnosed in five truck drivers making transportation from Hatay to Turkmenistan, Syria, Saudi Arabia, Iran, Georgia, Uzbekistan and Azerbaijan.
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Affiliation(s)
- Gülnaz Çulha
- Mustafa Kemal University Faculty of Medicine, Department of Parasitology, Hatay, Turkey
| | | | - Tuğba Kaya
- Mustafa Kemal University Faculty of Medicine, Department of Parasitology, Hatay, Turkey
| | - İbrahim Çavuş
- Manisa Celal Bayar University Faculty of Medicine, Department of Parasitology, Manisa, Turkey
| | - Burcu Gülkan
- Mustafa Kemal University Faculty of Medicine, Department of Parasitology, Hatay, Turkey
| | - Ahmet Özbilgin
- Manisa Celal Bayar University Faculty of Medicine, Department of Parasitology, Manisa, Turkey
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Özbilgin A, Kaya T, Çavuş İ, Yıldırım A, Özpınar N. Comparison of Reproduction Densities in Different Liquid Media of Trypanosoma cruzi and Cryopreservation. Turkiye Parazitol Derg 2019; 42:249-253. [PMID: 30604684 DOI: 10.5152/tpd.2018.5750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE This study aims to determine the optimum liquid medium for the reproduction of Trypanosoma cruzi strains and provide cryopreservation. METHODS The reproduction density of T. cruzi strain was evaluated in the following five different commercial liquid culture media: RPMI 1640, Medium 199 (M199), Schneider's İnsect Medium (SİM), Nutrient Broth (NB), Brain Heart İnfusion Broth (BHİB). Cultures were monitored on every other day for a period of 24 days. Cryopreservation of T. cruzi was also performed and viability was tested after six months. RESULTS Epimastigotes of T. cruzi were not found to be produced in NB and BHIB media. Significant difference was not observed among the reproduction potential of RPMI-1640, M199, and SIM after evaluating the data for the first 10 days. Between days 12 and 24, RPMI-1640 was found to be the best reproduction medium. From the 18th day onwards, parasites transformed amastigotes. On the 24th day, the highest level of amastigote amount was observed, and reproduction was determined to have stopped. As a result of cryopreservation, it was determined that the survival of T.cruzi continued after six months.. CONCLUSION Thus, the selection of RPMI-1640 medium, followed by M199 and SIM media would be appropriate when studying T. cruzi epimastigotes. Studies using epimastigotes should be planned for up to 18 days and for those using amastigotes, it would be appropriate to plan the studies after the 18th day. Moreover, T. cruzi can be cryopreserved with 15% DMSO and stored for a long time in liquid nitrogen.
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Affiliation(s)
- Ahmet Özbilgin
- Manisa Celal Bayar Üniversitesi Tıp Fakültesi, Tıbbi Parazitoloji Ana Bilim Dalı, Manisa, Türkiye
| | - Tuğba Kaya
- Manisa Celal Bayar Üniversitesi Tıp Fakültesi, Tıbbi Parazitoloji Ana Bilim Dalı, Manisa, Türkiye
| | - İbrahim Çavuş
- Manisa Celal Bayar Üniversitesi Tıp Fakültesi, Tıbbi Parazitoloji Ana Bilim Dalı, Manisa, Türkiye
| | - Ahmet Yıldırım
- Manisa Celal Bayar Üniversitesi Tıp Fakültesi, Tıbbi Parazitoloji Ana Bilim Dalı, Manisa, Türkiye
| | - Necati Özpınar
- Cumhuriyet Üniversitesi Veteriner Fakültesi, Sivas, Türkiye
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Abstract
OBJECTIVE It was aimed to assess the success of the cryopreservation process which is carried out in order to preserve the genetic material and the virulence of the Leishmania species that are an important health problem in our region. METHODS Leishmania tropica, L. infantum, L. major, and L. donovani strains in Novy-MacNeal-Nicolle (NNN) medium in MCBU were used. Promastigotes cultured in the NNN medium were transferred to RPMI 1640 medium; promastigotes in the logarithmic phase were washed three times with PBS, and 15% dimethylsulfoxide (DMSO) was added. Leishmania species were transferred to 12 separate tubes. The tubes were stored at -86°C for one night by placing them in Coolcell boxes. The tubes were transferred into a liquid nitrogen tank. One cryotube per Leishmania strain is thawed monthly and cultured in NNN medium. RESULTS For the duration of study it was observed that each Leishmania isolate preserved 60-65% of their viability and entered the logarithmic phase on the 7th day following the inoculation in the NNN medium. Abnormalities in the structures and movements of the promastigotes were not observed in microscopic examinations. CONCLUSION The following conclusions were made: cryopreservation is important for studies planned related to leishmaniasis and cryopreservation with DMSO is successful.
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Affiliation(s)
- İbrahim Çavuş
- Manisa Celal Bayar Üniversitesi Tıp Fakültesi, Tıbbi Parazitoloji Anabilim Dalı, Manisa, Türkiye.
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Özbilgin A, Çavuş İ, Yıldırım A, Kaya T, Ertabaklar H. Evaluation of In vitro and In vivo Drug Efficacy Over Leishmania tropica: A Pilot Study. Turkiye Parazitol Derg 2018; 42:11-19. [PMID: 29780014 DOI: 10.5152/tpd.2018.5554] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE Two pentavalent antimonials, meglumine antimoniate (Glucantime®, France) and sodium stibogluconate (Pentostam®, England), are used to treat cutaneous leishmaniasis (CL) in Turkey. The present study, serving as a guidebook for young researchers, aims to provide basis for conducting drug resistance tests and active ingredient scanning in in vitro and in vivo models. METHODS A CL isolate kept in liquid nitrogen was initially thawed and genotyped by real-time polymerase chain reaction (PCR) using ITS1 prob. In vitro and in vivo tests were conducted to determine drug resistance against meglumine antimoniate and sodium stibogluconate. Hemocytometry and XTT (sodium 3,39-[1-(phenylaminocarbonyl)-3,4-tetrazolium]-bis (4-methoxy-6-nitro) benzenesulfonic acid hydrate) methods were used to investigate in vitro drug resistance. CL mouse models were used to analyze in vivo drug resistance. RESULTS The isolate was determined as Leishmania tropica by genotyping by PCR on the internal transcribed spacer 1 (ITS1) gene region. In in vitro drug resistance tests, sodium stibogluconate was observed to be more effective than meglumine antimoniate, but there was no statistically significant difference between the two (p > 0.05). It was observed that the footpad lesions of the animals started to shrink afterward the 5th week of infection following treatment with these agents, and parasitologic recovery was observed at the end of 3 months. CONCLUSIONS With an aim to be used as a guidebook for young researchers, active ingredient scanning and drug resistance tests in both in vitro and in vivo models were presented in the current study.
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Affiliation(s)
- Ahmet Özbilgin
- Celal Bayar Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Manisa, Türkiye
| | - İbrahim Çavuş
- Celal Bayar Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Manisa, Türkiye
| | - Ahmet Yıldırım
- Celal Bayar Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Manisa, Türkiye
| | - Tuğba Kaya
- Celal Bayar Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Manisa, Türkiye
| | - Hatice Ertabaklar
- Adnan Menderes Üniversitesi Tıp Fakültesi, Parazitoloji Anabilim Dalı, Aydın, Türkiye
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Özbilgin A, Çavuş İ, Nuraydın A, Kaya T. In vivo and in vitro Models for Scanning Drug Substances in Malaria: Prestudy. Turkiye Parazitol Derg 2017; 41:156-163. [PMID: 29035245 DOI: 10.5152/tpd.2017.5365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
OBJECTIVE The Wolrd Health Organization (WHO) encourages all countries to investigate antimalarial drug substances derived from herbal sources with the slogan "Hunt of the Next Artemisinin" due to the emergence of resistant strains of Plasmodium species to artemisinin. In the broad and simple sense, it was planned to help guide the young researchers set in-vitro and in-vivo models of malaria in order to be used in drug research and active ingredient studies. METHODS In-vitro study, young Plasmodium berghei trophozoites were removed from the liquid nitrogen tank and resuspended in appropriate conditions, followed by incubation with chloroquine and tetracycline at concentrations of 0.1, 0.4, 0.8, 1.6, 6.4, 12.8 μg/mL for 24 hours at +37°C in a shaking incubator. In-vivo studies, Tetracycline group (TG) and Chloroquine group (KG) were administered 50 mg/kg of tetracycline and chloroquine by intragastric lavage and untreated control group (TACG) were administered the same amount of saline via the same route. The suppression of parasitemia in mice was followed for 24 days. RESULTS In our in-vitro study it was observed that 0.8 μg/mL of chloroquine and 1.6 μg/mL of tetracycline was enough to suppress parasitemia. In our in-vivo drug study, all of the mice in the TG group died at day 24, and all of the mice in the TAKG group died at day 12, with no parasitemia observed in the mice in the KG group. CONCLUSION Our study suggests that if tetracycline therapy is administered when the induction of chloroquine therapy is delayed, the exacerbation of the parasitemia may be prevented and when chloroquine is obtained chloroquine therapy can be commenced thus preventing the loss of the patient.
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Affiliation(s)
- Ahmet Özbilgin
- Manisa Celal Bayar Üniversitesi Tıp Fakültesi Tıbbi Parazitoloji Anabilim Dalı, Manisa, Türkiye.
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Varim C, Sipahi S, Yaylaci S, Kaya T, Nalbant A. EFFECTS OF VITAMIN D ANALOGS ON ERYTHROPOIESIS-STIMULATING AGENT DASAGE AND SECONDARY ANEMIA IN HEMODIALYSIS PATIENTS. Georgian Med News 2016:26-32. [PMID: 27119831] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
To investigate the effects of Vitamin D Analogs, paricalcitol and alphacalcidol, on hemoglobin levels and erythropoietin-stimulating agents' dosage in hemodialysis patients with chronic renal failure. A total of 310 patients under hemodialysis treatment for chronic renal failure were included in this retrospective multicenter study. Data on serum parathormone and hemoglobin levels, erythropoietin-stimulating agents' doses, C-reactive protein, calcium and phosphate levels were collected from medical records to comparatively evaluate paricalcitol, alphacalcidol and no treatment groups. Apart from significantly higher levels for hematocrit in patients treated with paricalcitol compared to pre-treatment values (32.3(3.8) vs. 34.1(3.1) p=0.007), pre-treatment and post-treatment values for biochemical parameters were similar in paricalcitol and alphacalcidol groups including ESA dose. A significant increase in parathormone levels (p=0.000 for each) while a significant decrease in calcium (p=0.003 and 0.040, respectively), Hb (p=0.001 and 0.009, respectively) and hematocrit (p=0.001 and 0.021, respectively) levels were determined in paricalcitol and alphacalcidol treated patients compared with untreated patients. Also, phosphate levels in alphacalcidol treated patients were significantly higher (p=0.018) than untreated patients. Our findings revealed insufficient suppression of parathormone levels and there of lower hemoglobin and hematocrit levels, but similar ESA dosage among CRF patients treated with Vitamin D analogs compared with untreated patients.
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Affiliation(s)
- C Varim
- Sakarya University Medicine Faculty, Department of Internal Medicine, Department of Internal Medicine, Division of Nephrology, Sakarya; Rize Fındıklı State Hospital Rize, Department of Internal Medicine, Turkey
| | - S Sipahi
- Sakarya University Medicine Faculty, Department of Internal Medicine, Department of Internal Medicine, Division of Nephrology, Sakarya; Rize Fındıklı State Hospital Rize, Department of Internal Medicine, Turkey
| | - S Yaylaci
- Sakarya University Medicine Faculty, Department of Internal Medicine, Department of Internal Medicine, Division of Nephrology, Sakarya; Rize Fındıklı State Hospital Rize, Department of Internal Medicine, Turkey
| | - T Kaya
- Sakarya University Medicine Faculty, Department of Internal Medicine, Department of Internal Medicine, Division of Nephrology, Sakarya; Rize Fındıklı State Hospital Rize, Department of Internal Medicine, Turkey
| | - A Nalbant
- Sakarya University Medicine Faculty, Department of Internal Medicine, Department of Internal Medicine, Division of Nephrology, Sakarya; Rize Fındıklı State Hospital Rize, Department of Internal Medicine, Turkey
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Wagner FF, Zhang YL, Fass DM, Joseph N, Gale JP, Weïwer M, McCarren P, Fisher SL, Kaya T, Zhao WN, Reis SA, Hennig KM, Thomas M, Lemercier BC, Lewis MC, Guan JS, Moyer MP, Scolnick E, Haggarty SJ, Tsai LH, Holson EB. Kinetically Selective Inhibitors of Histone Deacetylase 2 (HDAC2) as Cognition Enhancers. Chem Sci 2015; 6:804-815. [PMID: 25642316 PMCID: PMC4310013 DOI: 10.1039/c4sc02130d] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Kinetically selective inhibitors of HDAC2 enhanced learning and memory in a CK-p25 mouse model of neurodegeneration.
Aiming towards the development of novel nootropic therapeutics to address the cognitive impairment common to a range of brain disorders, we set out to develop highly selective small molecule inhibitors of HDAC2, a chromatin modifying histone deacetylase implicated in memory formation and synaptic plasticity. Novel ortho-aminoanilide inhibitors were designed and evaluated for their ability to selectively inhibit HDAC2 versus the other Class I HDACs. Kinetic and thermodynamic binding properties were essential elements of our design strategy and two novel classes of ortho-aminoanilides, that exhibit kinetic selectivity (biased residence time) for HDAC2 versus the highly homologous isoform HDAC1, were identified. These kinetically selective HDAC2 inhibitors (BRD6688 and BRD4884) increased H4K12 and H3K9 histone acetylation in primary mouse neuronal cell culture assays, in the hippocampus of CK-p25 mice, a model of neurodegenerative disease, and rescued the associated memory deficits of these mice in a cognition behavioural model. These studies demonstrate for the first time that selective pharmacological inhibition of HDAC2 is feasible and that inhibition of the catalytic activity of this enzyme may serve as a therapeutic approach towards enhancing the learning and memory processes that are affected in many neurological and psychiatric disorders.
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Affiliation(s)
- F F Wagner
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
| | - Y-L Zhang
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
| | - D M Fass
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA ; SL Fisher Consulting, LLC, PO Box 3052, Framingham, Massachusetts, USA
| | - N Joseph
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA ; Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Howard Hughes Medical Institute, Cambridge, Massachusetts, USA
| | - J P Gale
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
| | - M Weïwer
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
| | - P McCarren
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
| | - S L Fisher
- SL Fisher Consulting, LLC, PO Box 3052, Framingham, Massachusetts, USA
| | - T Kaya
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
| | - W-N Zhao
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA ; Chemical Neurobiology Laboratory, Center for Human Genetic Research, Massachusetts General Hospital, Department of Neurology and Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
| | - S A Reis
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA ; Chemical Neurobiology Laboratory, Center for Human Genetic Research, Massachusetts General Hospital, Department of Neurology and Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
| | - K M Hennig
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA ; Chemical Neurobiology Laboratory, Center for Human Genetic Research, Massachusetts General Hospital, Department of Neurology and Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
| | - M Thomas
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
| | - B C Lemercier
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
| | - M C Lewis
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
| | - J S Guan
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA ; Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Howard Hughes Medical Institute, Cambridge, Massachusetts, USA
| | - M P Moyer
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
| | - E Scolnick
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
| | - S J Haggarty
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA ; Chemical Neurobiology Laboratory, Center for Human Genetic Research, Massachusetts General Hospital, Department of Neurology and Psychiatry, Harvard Medical School, Boston, Massachusetts, USA
| | - L-H Tsai
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA ; Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Howard Hughes Medical Institute, Cambridge, Massachusetts, USA
| | - E B Holson
- Stanley Center for Psychiatric Research; Broad Institute of Harvard and MIT; 7 Cambridge Center, Cambridge, Massachusetts, USA
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Ayhan F, Ataman S, Rezvani A, Paker N, Taştekin N, Kaya T, Bodur H, Yener M, Yazgan P, Doğu B, Gürgan A. FRI0040 The High Prevalence of Obesity and Association of Body Mass Index with Worse Disease Severity in Patients with Rheumatoid Arthritis: Results from the 1038 Patients of Trasd-Ip Register. Ann Rheum Dis 2014. [DOI: 10.1136/annrheumdis-2014-eular.3646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Evcik D, Ataman S, Rezvani A, Paker N, Birtane M, Kaya T, Borman P, Bodur H. AB0873 The evaluation of extraarticular manifestations of ankylosing spondylitis in turkish population patients. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Durmus N, Kaya T, Gültürk S, Demir T, Parlak M, Altun A. The effects of L type calcium channels on the electroencephalogram recordings in WAG/RIJ rat model of absence epilepsy. Eur Rev Med Pharmacol Sci 2013; 17:1149-1154. [PMID: 23690182] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Epilepsy is one of the most important central nervous system disorder and 1% of the total world population suffers from this disorder which require a chronic drug treatment. Most of the researchers suggested that excessive calcium entry into neurons is the main triggering event in the initiation of epileptic discharges but the role of L type calcium channels has not been clarified in absence epilepsy. AIM In this study, it is aimed to investigate the antiepileptic effects of nifedipine, an L type calcium channel blocker and BAY K8644, an L type calcium channel opener in a genetic model of absence epilepsy in WAG/Rij rats. MATERIALS AND METHODS Thirty two WAG/Rij rats were allocated into four groups; sham (only saline injected), only nifedipine (an L type calcium channel blocker) injected group (40 µg/2 µl; 60 µg/2 µl; 80 µg/2 µl), only BAY K8644 (1,4 Dihydro-2,6-dimethyl-5-nitro-4-trifluoromethyl- phenyl-3-pyridine carboxylic acid methyl ester) (L-type Ca2+-channel activator) injected group (40 µg/2 µl; 60 µg/2 µl; 80 µg/2 µl) and combination of their most effective doses BAY K8644 (60 µg/2 µl) after nifedipine (60 µg/2 µl) injected group. All agents were given by intracerebroventricular injection. The beta, alpha, theta and delta wave ratios of electroencephalogram recordings and the frequency and duration of SWDs (spike and wave discharges) were analyzed and compared between four groups. RESULTS Nifedipine increased the number and duration of spike wave discharges whereas BAY K8644 decreased both of them. When BAY K8644 was given after nifedipine, there was no significant difference with control group. CONCLUSIONS L type calcium channels play an activator role on spike wave discharges and have positive effects on the duration and frequency.
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Affiliation(s)
- N Durmus
- Turkish Medicines and Medical Devices Agency, Ankara, Turkey.
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Kilickap S, Altun A, Babacan N, Ataseven H, Kaya T. Antitumor and Antiangiogenic Activity of Sorafenib on Colorectal Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)33127-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Kaya T, Ozturk PA, Karatepe AG, Gunaydin R. Thematic stream: co-morbidity: OP3. Impact of Peer-Led Education on Quality of Life and Knowledge about Disease in Patients with Ankylosing Spondylitis. Rheumatology (Oxford) 2011. [DOI: 10.1093/rheumatology/ker093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Conca W, Al-Salam S, Ding HJ, Mohd Thabit AA, Hussein H, Koc A, Karatepe AG, Gunaydin R, Kaya T, Lee YH, Park W, Jin Choi H, Jae Hong S, Hee Lee C, Suh CH, Hwang JY, Park SW, Lee J, Wong RH, Shiu LJ, Huang CH, Lee HS, Cheng-Chung Wei J, Surkan E, Fuat ES, Alpaslan A, Gary M, Vijitha DS, Ashraf EM, Robert M, Mbiantcha M, Nguelefack TB, Ndontsa BL, Tane P, Kamanyi A, Karadag O, Yilmaz S, Kisacik B, Kalyoncu U, Tezcan E, Yilmaz S, Ozgen M, Kaskari D, Direskeneli H, Kiraz S, Ertenli I, Dinc A, Capkin E, Karkucak M, Kose MM, Cakmak VA, Turkyilmaz AK, Tosun M, Baykal T, Senel K, Alp F, Erdal A, Ugur M, Ediz L, Tuluce Y, Ozkol H, Hiz O, Gulcu E, Toprak M, Kokkonen H, Mullazehi M, Ronnelid J, Rantapaa-Dahlqvist S, Bodur H, Rezvani A, Andersone D, Bulina I, Jaunalksne I, Batmaz I, Karakoc M, Yazici S, Cevik R, Nas K, Sarac AJ, Atilgan Z, Budak S, Arman MI, Ozcan E, Esmaeilzadeh S, Sen E, Baysak T, Kayikci O, Pamuk ON, Arican O, Donmez S, Pamuk GE, Cakir N, Koyuncu H, Gun K, Uludag M, Ornek NI, Suzen S, Battal H, Karamehmetoglu S, Senel K, Baykal T, Baygutalp F, Kiziltunc A, Ugur M, Yildirim S, Hatemi G, Yurdakul S, Fresko I, Ozdogan H, Ebru T, Murat B, Serdar K, Mert C, Ufuk U, Nurettin T, Smolen JS, Freundlich B, Pavelka K, Nash P, Miranda P, Hammond C, Vlahos B, Pedersen R, Koenig AS, Zinnuroglu M, Erden Z, Gogus F, Yalcin T, Bal A, Dulgeroglu D, Cakci A, Yalcin T, Bal A, Dulgeroglu D, Cakci A, Takeuchi T, Tanaka Y, Amano K, Hoshi D, Nawata M, Nagasawa H, Satoh E, Saito K, Kaneko Y, Fukuyo S, Kurasawa T, Hanami K, Kameda H, Yamanaka H. Thematic stream: inflammatory arthritis (PP01-PP31): PP01. Autoinflammatory Synovitis in Familial Mediterranean Fever is Characterized by Numerous Neutrophils Lacking Myeloperoxidase and Lysozyme, Macrophages, Mast Cells and B Cells, Up-Regulation of Galectin-1, P65 (REL A)/NF-KB and Inos, but not COX-2. Rheumatology (Oxford) 2011. [DOI: 10.1093/rheumatology/ker097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Kaya T, Ozan H, Ozakin C. The presence of Helicobacter pylori in cervical preinvasive lesions. CLIN EXP OBSTET GYN 2009; 36:113-115. [PMID: 19688955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
PURPOSE Helicobacter pylori (H. pylori) is believed to play a role in several gynecological and obstetric pathologies since the cervical mucosa resembles the gastric environment. The microorganism is expected to infect the upper genital tract via the oral-genital and fecal-genital routes. METHODS We studied 35 cases with benign, ASCUS, ASC-H, LSIL and HSIL pap-smear results. The presence of H. pylori in the uterine cervix and active infection were investigated with the H. pylori stool antigen test. Biopsy specimens were stained with hematoxylin-eosin and Warthin-Starry stains to find H. pylori in cervical tissue. Seroprevalence was investigated by using ELISA for H. pylori IgG and IgA. RESULTS The H. pylori seroprevalence was 65.7%; further, 17.1% of the cases had an active infection. H. pylori was not found in the cervix or the cervicovaginal secretions. CONCLUSION The cervix is not a reservoir for H. pylori, and the microorganism does not appear to be transmitted through the fecal-genital route.
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Affiliation(s)
- T Kaya
- Department of Obstetrics and Gynecology, Uludag University Medical Faculty, Bursa, Turkey
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Bodur H, Ataman S, Akbulut L, Evcik D, Kavuncu V, Kaya T, Günaydin R, Kuran B, Kotevoğlu N, Bal A, Aydoğ E, Altay Z, Uğurlu H, Kocabaş H, Olmez N, Yazgan P, Gürsoy S, Madenci E, Ozel S, Delialioğlu SU. Characteristics and medical management of patients with rheumatoid arthritis and ankylosing spondylitis. Clin Rheumatol 2008; 27:1119-25. [PMID: 18357499 DOI: 10.1007/s10067-008-0877-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2007] [Revised: 01/09/2008] [Accepted: 02/28/2008] [Indexed: 11/30/2022]
Abstract
Rheumatoid arthritis (RA) and ankylosing spondylitis (AS) are chronic, progressive, systemic inflammatory rheumatic diseases that lead to serious disability. The objective of this study was to investigate the demographic and clinical characteristics of the patients with RA and AS who were treated in tertiary hospitals in Turkey and to analyze their current medical management. A total of 562 RA and 216 AS patients were evaluated. The mean age of RA patients was 52.1 +/- 12.6 years. The female to male ratio was 3.7:1. Of the RA patients, 72.2% had positive rheumatoid factor (RF), 62.9% had high C-reactive protein, and 75.2% had radiological erosion. The ratio of patients with Disease Activity Score (DAS) 28 >3.2 was 73.9% and of those with Health Assessment Questionnaire (HAQ) > or =1.5 was 20.9%. There was a statistically significant increase in RF positivity and HAQ scores in the group with higher DAS 28 score. Frequency of extraarticular manifestations was 22.4%. The ratio of the patients receiving disease modifying antirheumatic drugs (DMARD) was 93.1%, and 6.9% of the patients were using anti-tumor necrosis factor (TNF) blocking agents. In AS, the mean age of the patients was 38.1 +/- 10.6, and the female to male ratio was 1:2.5. The time elapsed between the first symptom and diagnosis was 4.3 years. The ratio of peripheral joint involvement was 29.4%. Major histocompatibility complex, class I, B 27 was investigated in 31.1% of patients and the rate of positivity was 91%. In 52.4% of the patients, Bath AS Disease Activity Index (BASDAI) was > or =4. The erythrocyte sedimentation rate, Bath AS Functional Index, and peripheral involvement were significantly higher in the group with BASDAI > or =4. Frequency of extraarticular involvement was 21.2% in AS patients. In the treatment schedule, 77.5% of AS patients were receiving sulphasalazine, 15% methotrexate, and 9.9% anti-TNF agents. Despite widespread use of DMARD, we observed high disease activity in more than half of the RA and AS patients. These results may be due to relatively insufficient usage of anti-TNF agents in our patients and therefore these results mostly reflect the traditional treatments. In conclusion, analysis of disease characteristics will inform us about the disease severity and activity in RA and AS patients and could help in selecting candidate patients for biological treatments.
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Affiliation(s)
- H Bodur
- Physical Medicine and Rehabilitation (PMR) Department, Ankara Numune Training and Research Hospital, Mürsel Uluç Ankara, Turkey.
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Yildirim MK, Bagcivan I, Sarac B, Kilicarslan H, Yildirim S, Kaya T. Effect of hypothyroidism on the purinergic responses of corpus cavernosal smooth muscle in rabbits. Int Urol Nephrol 2008; 40:691-9. [PMID: 18327655 DOI: 10.1007/s11255-008-9332-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2007] [Accepted: 01/08/2008] [Indexed: 11/25/2022]
Abstract
AIMS Several studies have reported evidence of hormonal abnormalities in 25-35% of impotent men. Hypothyroidism has been reported to occur in 6% of impotent men. In the present study, we examined purinergic relaxation responses in hypothyroidism in an experimental rabbit model and compared them with controls to evaluate the possible involvement of the purinergic pathway. MATERIALS AND METHODS The study comprised 20 male New Zealand white rabbits. The rabbits were divided into two equal groups. We tested the effects of ATP, alpha beta ATP, and adenosine precontracted with phenylephrine on the isolated corpus cavernosum preparations from control and hypothyroid rabbits. We also evaluated the effects of ATP, alpha beta ATP, and adenosine on the cGMP levels in the isolated corpus cavernosum preparations from control and hypothyroid rabbits. RESULTS T3, T4, and testosterone levels were significantly lower in hypothyroid rabbits. ATP, alpha beta ATP, carbachol, and electrical field stimulation (EFS)-induced frequency-dependent relaxation responses in the isolated rabbit corpus cavernosum strips precontracted with phenylephrine reduced significantly (P<0.05). Adenosine-induced relaxation responses did not change significantly in hypothyroid rabbits. CONCLUSION Reduction of relaxation response in hypothyroid rabbits corpus cavernosum can depend on a decreased release of nitric oxide (NO) from nitrergic nerves and endothelium.
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Affiliation(s)
- M K Yildirim
- Department of Pharmacology, School of Medicine, Cumhuriyet University, Sivas, Turkey
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Bagcivan I, Cevit O, Yildirim MK, Gursoy S, Yildirim S, Kaya T, Mimaroglu C. Investigation of the relaxant effects of propofol on ovalbumin-induced asthma in guinea pigs. Eur J Anaesthesiol 2007; 24:796-802. [PMID: 17517171 DOI: 10.1017/s0265021507000415] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND OBJECTIVE Because the incidence of asthma appears to be increasing, the importance of proper perioperative management of individuals with asthma will also continue to increase. Although its mechanism of smooth muscle relaxation is unknown, propofol has been associated with less bronchoconstriction during anaesthetic induction. The aim of this study was to investigate the possible mechanism of these effects and the effects of propofol on the isolated trachea preparations from control and ovalbumin-sensitized guinea pigs. METHODS Adult male guinea pigs, weighing 280-330 g, were randomly allocated to two experimental groups, each consisting of 10 animals. Ten guinea pigs were sensitized by intramuscular injections of 0.30 mL of a 5% (w/v) ovalbumin/saline solution into each thigh (0.6 mL total) on days 1 and 4, whereas the remaining 10 served as controls receiving a total of 0.6 mL distilled water on days 1 and 4 as placebo. The isolated trachea preparations were mounted in tissue baths with modified Krebs-Henseleit solution and aerated with 95% oxygen and 5% carbon dioxide. We tested the effects of propofol (10(-7)-10(-3) M) on resting tension and after precontraction with carbachol and histamine on isolated trachea preparations from control and ovalbumin-sensitized guinea pigs. We also tested the effect of propofol on isolated trachea preparations precontracted with carbachol and histamine in the absence and presence of different inhibitors or antagonists. We investigated propofol responses in tracheal smooth muscle precontracted with CaCl2. RESULTS Propofol (10(-7)-10(-3) M) produced a concentration-dependent relaxation of isolated tracheal preparations precontracted by carbachol (10(-6) M) and histamine (10(-6) M) in both groups. Preincubation with N(w)-nitro L-arginine methyl ester (3x10(-5) M), indomethacin (10(-5) M) or propranolol (10(-4) M) did not produce a significant alteration on propofol-induced relaxation responses (P>0.05), while preincubation with tetraethylammonium (3x10(-4) M) significantly decreased the propofol-induced relaxation responses in both groups (P<0.05). Propofol (10(-7)-10(-3) M) induced concentration-dependently relaxations in isolated trachea rings precontracted with CaCl2 in both the control and ovalbumin-sensitized groups. CONCLUSION Propofol induced concentration-dependent relaxations in precontracted, isolated trachea smooth muscle of guinea pigs in both the control and ovalbumin-sensitized groups. These relaxations were independent of epithelial function and stimulation of beta adrenergic receptors. Opened Ca2+-sensitive K+ channels and inhibited L-type Ca2+ channels can contribute to these relaxations.
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Affiliation(s)
- I Bagcivan
- Cumhuriyet University School of Medicine, Department of Pharmacology, Sivas, Turkey.
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Tursen U, Guney A, Kaya T, Ikizoglu G. Treatment of bullous pemphigoid with enteric-coated mycophenolate sodium. J Eur Acad Dermatol Venereol 2007; 21:542-4. [PMID: 17373988 DOI: 10.1111/j.1468-3083.2006.01942.x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Yilmaz F, Aydin U, Nart D, Zeytunlu M, Karasu Z, Kaya T, Ozer I, Yuce G, Aydogdu S, Kilic M. The incidence and management of acute and chronic rejection after living donor liver transplantation. Transplant Proc 2006; 38:1435-7. [PMID: 16797325 DOI: 10.1016/j.transproceed.2006.02.108] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2005] [Indexed: 10/24/2022]
Abstract
Living donor liver transplantation (LDLT) is a good alternative to cadaveric liver transplantation for end-stage liver disease. Herein we report the outcome of 132 LDLTs performed between 1999 and 2005, with special emphasis on the incidence and management of acute and chronic rejection. Among the LDLT population a first acute rejection episode (ARE) was clinically suspected in 24% and proven by liver biopsy in 11%. According to the Banff classification, 50% of AREs were grade 1, and 50%, grade 2. There was no grade 3 AREs. The first ARE occurred between 7 days and 23 months posttransplantation (mean 97 days, median 70 days). Ninety-seven percent (31/32) of the AREs occurred within the first year after transplantation and 3% (1/32) in the second year. Among the patients with ARE, 23% developed a second ARE between 4 and 11 months. A third ARE was detected in 8% of patients after month 18. All AREs responded to adjustment of immunosuppressive doses or steroid boluses. Chronic rejection (CR) was detected in 2%. In conclusion, the incidences of ARE and CR are consistent with the previously reported data. Acute and chronic rejections seem to be mild and easily manageable clinical conditions. Our results also showed a significant difference between clinically suspected and biopsy-proven ARE emphasizing the importance of indicated liver biopsies in the management of the LDLT population.
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Affiliation(s)
- F Yilmaz
- Ege Universitesi Tip Fakultesi, Izmir, Turkey
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Gursoy S, Bagcivan I, Yildirim MK, Berkan O, Kaya T. Vasorelaxant effect of opioid analgesics on the isolated human radial artery. Eur J Anaesthesiol 2006; 23:496-500. [PMID: 16507200 DOI: 10.1017/s0265021506000172] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/12/2006] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND OBJECTIVE Arterial grafts are prone to vasospasm. Opioid analgesics are commonly used in the perioperative course of cardiac surgical procedures. Therefore, we investigated the direct effects of morphine, meperidine, fentanyl and remifentanil on the human radial artery. METHODS Radial artery segments, obtained from 20 patients, were precontracted with phenylephrine. Using the organ bath technique, the endothelium-independent vasodilatation was tested in vitro by addition of cumulative concentrations of morphine, meperidine, fentanyl and remifentanil in separate organ baths, in the presence or absence of naloxone. Indomethacin and NG-nitro-L-arginine methyl ester was added to all organ bath in order to determine the effects of prostaglandins and nitric oxide, respectively. RESULTS Morphine (10(-8) - 10(-4) mol L-1), meperidine (10(-10) - 10(-6) mol L-1), fentanyl (10(-10) - 10(-6) mol L-1) and remifentanil (10(-8) - 10(-4) mol L-1) caused a concentration-dependent vasorelaxation in the human being artery rings. The relaxations in the presence of naloxane did not change. The maximal relaxant effects of meperidine and fentanyl were significantly greater than those of morphine and remifentanil (P < 0.05). CONCLUSIONS These findings indicate that morphine, meperidine, fentanyl and remifentanil produce concentration-dependent and endothelium-independent relaxations in human being radial artery rings. Meperidine and fentanyl are more potent relaxant agents than morphine and remifentanil in the human being radial artery in vitro.
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Affiliation(s)
- S Gursoy
- Department of Anesthesiology, Cumhuriyet University School of Medicine, Sivas, Turkey.
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Gursoy S, Kaya T, Kunt N, Karadas B, Bagcivan I, Kafali H. Interactive effect of sevoflurane with isradipine or indomethacin on spontaneous contractile activity of isolated pregnant rat myometrium. Int J Obstet Anesth 2004; 13:234-8. [PMID: 15477052 DOI: 10.1016/j.ijoa.2004.03.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/01/2004] [Indexed: 11/26/2022]
Abstract
Volatile anesthetics, calcium antagonists and non-steroidal anti-inflammatory drugs inhibit contractile activity of myometrial smooth muscle. The aim of this study was to investigate the interactive effect of sevoflurane with isradipine or indomethacin on spontaneous contractile activity of myometrial strips isolated from pregnant rats. The myometrial strips were excised from rats (250-300 g) at 19-21 days of gestation and mounted in tissue baths for recording of isometric tension. Sevoflurane (0.5 to 3 MAC) inhibited the amplitude and frequency of spontaneous myometrial contractions in a concentration-dependent manner (P<0.05). Sevoflurane responses were repeated in the presence of isradipine (a dihydropyridine-type calcium channel blocker) and indomethacin (a non-selective cyclooxygenase (COX) inhibitor). Pretreatment with isradipine (10(-6) M) or indomethacin (10(-7) M), concentrations that themselves had no effect on spontaneous contractility, significantly increased the inhibitor responses to sevoflurane on amplitude and frequency of myometrial contractions, beginning at 1 MAC (P<0.05). Blockade of calcium channels in myometrial smooth muscle may increase the inhibitor effect of sevoflurane. Further work is needed to determine the cellular mechanism(s) of this interaction.
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Affiliation(s)
- S Gursoy
- Department of Anesthesiology, Cumhuriyet University School of Medicine, Sivas, Turkey
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Kebapci M, Kaya T, Gurbuz E, Adapinar B, Kebapci N, Demirustu C. Differentiation of adrenal adenomas (lipid rich and lipid poor) from nonadenomas by use of washout characteristics on delayed enhanced CT. Abdom Imaging 2003; 28:709-15. [PMID: 14628882 DOI: 10.1007/s00261-003-0015-0] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND We describe nonenhanced, early contrast-enhanced, and delayed contrast-enhanced computed tomographic (CT) features and contrast washout characteristics of lipid-poor and lipid-rich adrenal adenomas and nonadenomas to determine the role of these methods in distinguishing one type from the other. METHODS Sixty-five patients with 77 adrenal masses (16 lipid-poor and 37 lipid-rich adenomas and 24 nonadenomas) were consecutively examined with dynamic helical CT. Nonenhanced CT was followed by early enhanced CT at 5, 10, 15, and 30 min delays after administration of contrast material. RESULTS The difference between the mean nonenhanced and early contrast-enhanced values of the lipid-poor adenomas and nonadenomas was statistically significant, but the ranges of the values were overlapping. The lipid-poor adenomas had lower mean attenuation values than those of nonadenomas on delayed contrast-enhanced scans at each delay time, but these differences did not reach statistical significance. Even though the relative percentage washout of the lipid-poor adenomas was lower than that of lipid-rich adenomas, it was remarkably different from that of the nonadenomas. CONCLUSIONS The absolute or relative percentage washout of contrast material on delayed contrast-enhanced CT is a highly specific test for the differentiation of lipid-poor and lipid-rich adrenal adenomas from adrenal nonadenomas.
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Affiliation(s)
- M Kebapci
- Department of Radiology, Osmangazi University School of Medicine, Meselik, 26480, Eskisehir, Turkey
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Kebapci M, Yalcin OT, Dündar E, Ozalp SS, Kaya T. Computed tomography findings of primary serous papillary carcinoma of the peritoneum in women. EUR J GYNAECOL ONCOL 2003; 24:552-6. [PMID: 14658602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/27/2023]
Abstract
With the aim to describe preoperative computed tomography (CT) findings, the clinical, histopathological, and CT findings of the 12 consecutive patients with a confirmed diagnosis of primary peritoneal serous papillary carcinoma (PPSPC) were retrospectively evaluated. Of the 12 patients with a mean age of 57.5 +/- 10.3 years, ten (83.3%) were postmenopausal. Serum Ca-125 levels were elevated in all patients. Ten (83.3%) had Stage III and two (16.7%) patients had Stage IV disease and none of the excised ovaries had deep parenchymal involvement. The most common CT findings were the omental (n = 11), mesenterial (n = 11) and parietal peritoneal involvements (n = 10), and variable amount of ascites (n = 10). Pelvic peritoneal involvement in four (33.3%) patients was so extensive that it resembled a mass in the Douglas pouch. Thickening of the wall of gastrointestinal viscera (n = 9), lymphadenopathy (n = 5) and pleural effusion (n = 5) were the other CT findings and calcification was seen in only three (25.0%) patients. Although, none of them was characteristic, CT features of diffuse peritoneal, omental and mesenterial involvement especially in middle-aged or elderly postmenopausal women with normal-size ovaries in the absence of an identifiable primary site in conjunction with elevated level of serum CA-125 should suggest the possibility of PPSPC.
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Affiliation(s)
- M Kebapci
- Department of Radiology, Osmangazi University School of Medicine, Eskisehir, Turkey
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Korkmaz C, Zubaroğlu I, Kaya T, Akay OM. Takayasu's arteritis associated with rheumatoid arthritis: a case report and review of the literature. Rheumatology (Oxford) 2001; 40:1420-2. [PMID: 11752519 DOI: 10.1093/rheumatology/40.12.1420] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Abstract
A microbial chip for bioassay was fabricated and its performance was characterized by scanning electrochemical microscopy (SECM). The microbial chip was prepared by spotting a suspension of Escherichia coli on a polystyrene substrate by using a glass capillary pen. The respiration activity of the E. coli spot was imaged with SECM by mapping the oxygen concentration around the spot. The SECM images of the microbial chips clearly showed spots with lower reduction currents, indicating that E. coli in the spots uptake oxygen by respiration. The bactericidal effects of antibiotics (streptomycin and ampicillin) were measured using the E. coli-based microbial chip, and discussed in comparison with the minimum inhibitory concentration (MIC) determined by an agar plate dilution method.
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Affiliation(s)
- T Kaya
- Department of Biomolecular Engineering, Graduate School of Engineering, Tohoku University, Sendai 980-8579, Japan
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Korkmaz C, Zubaroglu I, Kaya T, Akçar N, Gürbüz E, Ozen S. A case of familial Mediterranean fever, Behçet's disease and polyarteritis nodosa complicated by perirenal haematoma. Clin Exp Rheumatol 2001; 19:S78-9. [PMID: 11760409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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Guvenal T, Cetin A, Ozdemir H, Yanar O, Kaya T. Prevention of postoperative adhesion formation in rat uterine horn model by nimesulide: a selective COX-2 inhibitor. Hum Reprod 2001; 16:1732-5. [PMID: 11473974 DOI: 10.1093/humrep/16.8.1732] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Pelvic surgery is one of the main causes of intraperitoneal (i.p.) adhesions that create various medical problems including pelvic pain, bowel obstructions and female infertility. A rat model was used to investigate the efficacy of nimesulide, a selective cyclooxygenase-2 inhibitor, in the prevention of adhesion formation. METHODS Fifty Wistar-Albino rats underwent bilateral uterine horn injury with a unipolar cautery. Study groups were as follows: (i) control group, no adjuvant therapy; (ii) i.p. Ringer's lactate group, 2 ml Ringer's lactate solution was instilled i.p.; (iii) i.p. Ringer's lactate plus nimesulide group, 1 ml Ringer's lactate plus 1 ml nimesulide (0.5 mg/ml) were given i.p.; (iv) intramuscular (i.m.) nimesulide group, 1 ml i.m. nimesulide (0.5 mg/ml) was given preoperatively for 5 days; and (v) i.p. nimesulide group, 1 ml nimesulide (0.5 mg/ml) was instilled i.p. At the end of the study all animals were killed, and a standard adhesion scoring system was applied by a blinded examiner. RESULTS The mean adhesion extent in study groups was as follows: 1.33 +/- 0.76 in control group, 1.40 +/- 0.90 in i.p. Ringer's lactate group, 0.75 +/- 0.70 in i.p. Ringer's lactate plus nimesulide group, 0.25 +/- 0.44 in i.m. nimesulide group and 0.31 +/- 0.70 in i.p. nimesulide group. The mean +/- SD adhesion severities of control, i.p. Ringer's lactate, i.p. Ringer's lactate plus nimesulide, i.m. nimesulide, and i.p. nimesulide groups were 0.58 +/- 0.35, 0.30 +/- 0.41, 0.27 +/- 0.3, 0.12 +/- 0.28 and 0.15 +/- 0.35 respectively. The lowest adhesions were found in the groups treated with nimesulide i.m. and nimesulide i.p. ( P < 0.05). CONCLUSIONS This study showed that preoperative i.m. or postoperative i.p. administration of nimesulide to the site of injury reduced the formation of postoperative adhesions in a rat uterine horn model.
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Affiliation(s)
- T Guvenal
- Department of Obstetrics and Gynecology, Cumhuriyet University School of Medicine, 58140 Sivas, Turkey.
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