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Dive into the research topics where Semir Pasa is active.

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Featured researches published by Semir Pasa.


Annals of Hematology | 2007

Factor V Leiden and G20210A prothrombin mutations in patients with recurrent pregnancy loss: data from the southeast of Turkey

Abdullah Altintas; Semir Pasa; Nurten Akdeniz; Timucin Cil; Murat Yurt; Orhan Ayyildiz; Sabri Batun; Hilmi Isi

Factor V Leiden (FV-Leiden) and prothrombin gene mutations (FII G20210A) are well-established independent risk factors for thrombosis. In the recent years, many studies have suggested that these mutations are associated with an increased risk of recurrent pregnancy loss (RPL). We aimed to investigate the prevalence of these molecular defects in subjects with a history of early RPL. One hundred and fourteen women with three or more consecutive unexplained first-trimester miscarriages were compared to 185 parous women with uncomplicated pregnancies from the same ethnic origin. The presence of FV-Leiden and FII G20210A mutations was assessed by polymerase chain reaction analysis. Overall, 11 out of the 114 women with early RPL (9.6%) had either FV-Leiden or FII G20210A mutation, as compared with 16 out of the 185 women with normal pregnancies (8.6%; p = 0.756). The prevalence of FV-Leiden mutation was 7.9% (9/114) in patient group, compared with 7% (13/185) in control group (p = 0.780). One hundred and two patients were primary and 12 were secondary aborters. All FV-Leiden positive cases were primary aborters (8.8%; 9/102, p = 0.584). Concerning the FII G20210A, two out of 114 (1.7%) were first-trimester RPL (primary aborters) and three out of 185 (1.6%) controls were carriers of the FII G20210A mutation (1.7 vs 1.6%, p = 0.931). The results obtained from patients with first-trimester RPL and the control group have no statistical significant differences in the prevalence of FV-Leiden and FII G20210A mutations. These results suggest that mutations have no role in etiology of first-trimester recurrent abortions.


Leukemia & Lymphoma | 2007

Pulmonary hypertension in patients with essential thrombocythemia and reactive thrombocytosis

Abdullah Altintas; Zülküf Karahan; Semir Pasa; Timucin Cil; Taylan Boyraz; Kenan Iltumur; Orhan Ayyildiz

Increased incidence of pulmonary hypertension (PH) has been reported in patients with chronic myeloproliferative disorders. The exact incidence of PH in essential thrombocythemia (ET) is unknown. Most of the reported literature consists of case reports or small studies. We designed this study to asses the incidence of PH in patients with ET and reactive thrombocytosis. Previously or newly diagnosed 46 patients with ET, and 40 patients with reactive thrombocytosis secondary to iron deficiency anemia were found to be eligible for this study. Diagnosis of PH was established via transthoracic echocardiography. PH was found in 22 (47.8%) out of 46 patients with ET. Seven patients with PH were newly diagnosed ET, 5 patients with PH were in low, and the other patients with PH were in intermediate or high risk category. We found statistically significant difference in terms of platelet counts between ET patients with PH and without PH (p = 0.027). None of the patients with reactive thrombocytosis had PH. In conclusion, PH appears to be common in patients with ET. Therefore, all patients with ET should be evaluated for PH. Larger and prospective studies are required to clarify the long-term impact of PH on the survival of these patients. Future studies are also needed to determine whether cytoreductive treatment and aspirin prevent the development of PH, and to determine the effects of cytoreductive treatments and aspirin on the prognosis of PH. The effect of PH on ET prognosis should also be determined in low risk ET patients.


Platelets | 2008

Thyroid and celiac diseases autoantibodies in patients with adult chronic idiopathic thrombocytopenic purpura

Abdullah Altintas; Semir Pasa; Timucin Cil; Kadim Bayan; Deniz Gokalp; Orhan Ayyildiz

The association of chronic idiopathic thrombocytopenic purpura (cITP) and thyroid autoimmune diseases (TAD) is a known but an uncommon condition. Celiac disease (CD), which is characterized by malabsorption and villous atrophy that occur as a consequence of the ingestion of wheat gluten may also be related to other autoimmune disorders. In this study, we investigated the prevalence of thyroid anti-microsomal (TAMA) and anti-thyroglobulin (TATA) auto antibodies, anti-gliadin (AGA) IgG, IgA, anti-endomisium (EMA) IgG and IgA antibodies in 74 patients with cITP and in 162 healthy controls. TATA positivity was found in 29, and TAMA positivity in 19 out of 74 patients; and in 16 and 18 out of 162 controls respectively (p < 0.0001 and p = 0.005, respectively). TAD was diagnosed in 29 of cITP patients. AGA IgG positivity was found in 17, and IgA was present in five out of 74 patients; and AGA IgG was found in 19, and IgA was detected in 4 out of 162 controls (p = 0.032 and p = 0.143, respectively). EMA IgG positivity was found in six out of 74 patients and in nine out of 162 control subjects (p = 0.566). EMA IgA positivity was found in two out of 74 patients and in one out of 162 controls (p = 0.232). We showed that the prevalence of TAD and related autoantibodies are higher in patients with cITP. We suggest that, patients with cITP should be followed up for development of TAD. In addition, all CD related auto antibodies were found to be more frequent in patients with cITP, but only the AGA IgG reached to the clinical significance. None of the CD related auto antibody positive patients developed clinically manifested CD. Large-scale designed studies are needed to clarify the long-term impact and importance of these CD related auto antibodies in patients with cITP.


Breast Care | 2008

Primary Spindle Cell Sarcoma of the Breast

Timucin Cil; Abdullah Altintas; Semir Pasa; Hüseyin Büyükbayram; Abdurrahman Isikdogan

Background: Primary pure breast sarcoma is a rare disease and constitutes 0.2–1.0% of all mammary malignancies. The establishment of a diagnosis of soft tissue sarcoma is difficult in adults. Immunohistochemical analysis usually proves to be helpful in indistinguishable cases. The simplistic step is to classify sarcomas on a simple descriptive basis as spindle cell sarcomas, myxoid sarcomas, pleomorphic sarcomas, and small round cell sarcomas. Case Report: Here, we present a rare case of primary spindle cell sarcoma of the breast. A 43-year-old woman was admitted to our clinic with a 2-month history of a left breast lump. Histopathological examination showed a tumor of 2.5 cm in diameter and of nuclear and histological grade 2. In the immunohistochemical examination, vimentin positivity, high nuclear overexpression of P53, high Ki-67 and S-100, desmin, leukocyte common antigen, keratin, and smooth muscle antigen, CD34, HMB45 and EMA negativity were detected. Conclusion: Most invasive breast neoplasms are epithelial tumors, and mesenchymal breast tumors are rarely seen. In primary breast sarcoma, adequate surgical tumor excision, tumor grade, and tumor diameter seem to be the most important prognostic factors.


Journal of Thrombosis and Thrombolysis | 2009

Thrombosis of temporal artery and renal vein in Kimura-disease-related nephrotic syndrome.

Ramazan Danis; Sehmus Ozmen; Davut Akin; Selver Ozekinci; Abdullah Altintas; Timucin Cil; Semir Pasa; İlhan Kılınç

Kimura disease (KD) is an angiolymphoid proliferative disorder of unknown etiology, occurs mainly in Asian patients, presenting with subcutaneous slowly growing masses, with a predilection for preauricular and submandibular regions. The clinical course of the disease is thought to be benign. Concomitant peripheral blood eosinophilia and elevated serum immunoglobulin E levels are often observed. Main systemic manifestation of the KD is renal involvement. Renal abnormalities, notably proteinuria and nephrotic syndrome have been found to be associated with KD. We report a 42-year-old man with KD and a steroid-sensitive membraneous nephrotic syndrome with bilaterally temporal artery and renal vein thrombosis. This is the first reported case of KD associated nephrotic syndrome complicated with wide arterial and venous thrombosis from Anatolia.


Annals of Hematology | 2009

Sheehan’s syndrome as a rare cause of anaemia secondary to hypopituitarism

Deniz Gokalp; Alpaslan Tuzcu; Mithat Bahceci; Senay Arikan; Selen Bahceci; Semir Pasa

Although its exact mechanism is unclear, anaemia is well recognised as a feature of hypopituitarism; and anaemia is associated with Sheehan’s syndrome (SS). We aimed to evaluate the frequency and severity of anaemia and other haematological changes among patients with Sheehan’s syndrome, in comparison with healthy controls. Sixty-five SS patients and 55 age-matched female healthy controls were included. Biochemical and hormonal assessments and haematological evaluations were carried out, and groups were compared. The mean number of red blood cells, as well as mean haemoglobin, iron and erythropoietin levels, total iron-binding capacity and transferrin saturation were all significantly lower in SS patients compared to controls. SS patients had significantly higher rates of anaemia (80.0% vs. 25.5%, p = 0.0001), iron deficiency (44.6% vs. 5.4%, p = 0.001), leukopenia (20.0% vs. 5.4%, p = 0.015), thrombocytopenia (9.2% vs. 0.0%, p = 0.028) and bicytopenia (21.5% vs. 1.8%, p = 0.001) compared to controls. Anaemic SS patients had normochromic-normocytic anaemia (55%) or hypochromic-microcytic anaemia (45%). Anaemia is frequently associated with Sheehan’s syndrome and responds to appropriate replacement therapy. Hypopituitarism should be considered as a possible cause of anaemia, and a hormone examination should be undertaken promptly, particularly in patients with anaemia resistant to therapy and/or with a history suggestive of Sheehan’s syndrome.


Leukemia & Lymphoma | 2008

Lamivudine for the prevention of hepatitis B virus reactivation in hepatitis-B surface antigen (HBSAG) seropositive cancer patients undergoing cytotoxic chemotherapy

Timucin Cil; Abdullah Altintas; Semir Pasa; Kadim Bayan; Tuncer Özekinci; Abdurrahman Isikdogan

Hepatitis B virus (HBV) is one of the major causes of chronic liver disease worldwide. Cancer patients who are chronic carriers of HBV have a higher hepatic complication rate while receiving cytotoxic chemotherapy (CT) and this has mainly been attributed to HBV reactivation. In this study, cancer patients who have solid and hematological malignancies with chronic HBV infection received the antiviral agent lamivudine prior and during CT compared with historical control group who did not receive lamivudine. The objectives were to assess the efficacy of lamivudine in reducing the incidence of HBV reactivation, and diminishing morbidity and mortality during CT. Two groups were compared in this study. The prophylactic lamivudin group consisted of 37 patients who received prophylactic lamivudine treatment. The historical controls consisted of 50 consecutive patients who underwent CT without prophylactic lamivudine. They were followed up during and for 8 weeks after CT. The outcomes were compared for both groups. Of our control group (n= 50), 21 patients (42%) were established hepatitis. Twelve (24%) of them were evaluated as severe hepatitis. In the prophylactic lamivudine group severe hepatitis were observed only in 1 patient (2.7%) of 37 patients (p < 0.006). Comparison of the mean ALT values revealed significantly higher mean alanine aminotransferase (ALT) values in the control group than the prophylactic lamivudine group; 154:64 (p < 0.32). Our study suggests that prophylactic lamivudine significantly decreases the incidence of HBV reactivation and overall morbidity in cancer patients during and after immunosuppressive therapy. Further studies are needed to determine the most appropriate nucleoside or nucleotide analogue for antiviral prophylaxis during CT and the optimal duration of administration after completion of CT.


Journal of Thrombosis and Thrombolysis | 2009

A case of essential mixed cryoglobulinemia and associated acquired von-Willebrand disease treated with rituximab.

Semir Pasa; Abdullah Altintas; Timucin Cil; Ramazan Danis; Orhan Ayyildiz; Ekrem Muftuoglu

Current treatment options of essential mixed cryoglobulinemia (EMC); include immunosuppressive approaches, such as corticosteroids, cyclophosphamide, plasma exchange, other cytotoxic drugs in moderate to severe manifestations. Some controlled studies have been carried out to assess the efficacy of anti-CD20 monoclonal antibody, rituximab in patients with hepatitis C (HCV) related cryoglobulinemia (CG) and in patients with autoimmune disorders. Recent trials and some case reports demonstrate a beneficial role for rituximab in HCV related mixed CG. Although, the published evidence for treatment of EMC with rituximab is restricted to case reports, which have shown positive results. Several diseases include lymphoproliferative and myeloproliferative disorders, solid tumors, immunological disorders, cardiovascular disorders and some drugs associated with acquired von Willebrand disease (avWD). CG, which is a kind of immune complex disease, may be related with development of autoantibodies to various autoantigens. In this present case report, we showed the efficacy of rituximab in a 21-year-old female patient, suffered from neuropathy and arthralgia related with EMC, and developed avWD, presented with mucosal bleeding associated with CG. von Willebrand factor activity of our patient also increased with controlling the underlying disease, EMC by rituximab. This case demonstrate that rituximab may be an effective treatment option in EMC and avWD mainly related to CG.


Leukemia & Lymphoma | 2007

Cytosine-arabinoside induced bradycardia in patient with non-Hodgkin lymphoma: A case report

Timucin Cil; M. Ali Kaplan; Abdullah Altintas; Semir Pasa; Abdurrahman Isikdogan

Cytarabine (Ara-C) is an arabinose nucleoside in the group of antimetabolite anticancer drugs. It is one of the critical agents for the treatment of acute myelogenous leukemia (AML). Moreover, Ara-C is used in the treatment of other hematological malignancies, such as non-Hodgkin’s lymphoma, chronic myelogenous leukemia, and acute lymphoblastic leukemia. The toxicity profile of Ara-C is highly dependent on the dose and schedule of administration. Well-known toxicities of Ara-C are myelosuppression, gastrointestinal and neurological toxicity. Other side effects associated with Ara-C include conjunctivitis, painful hand-foot syndrome, and anaphylactic reaction [1]. Cardiopulmonary complications of Ara-C including pericardial and myocardial complications are extremely rare [2 – 10]. Pericardial complications including pericarditis, effusion, and tamponade of Ara-C are more common than myocardial complications such as arrhytmias and congestive heart failure. Herein, we reported a patient who developed sinus bradycardia while receiving cytarabine as a second line therapy for non-Hodgkin’s lymphoma. The available information regarding a possible association of cytarabine with sinusal bradycardia is presented. A 53-year-old male patient admitted to our clinic with multiple cervical and abdominal lymphadenopathy. Histopathological examination of the excised cervical lymph node showed that dense lymphocytic infiltrates were composed predominantly of large dysplastic lymphocytes, which were marked as B cells (CD20(þ)). Six cycles of CHOP chemotherapy protocol (cyclophosphamide 750 mg/m Day 1, doxorubicine 50 mg/m Day 1, vincristine 1,4 mg/m Day 1, prednisone 100 mg Days 1 – 5) was administered as first line treatment and complete remission was achieved at the end of therapy. The disease progressed after 6 months, and DHAP chemotherapy protocol (dexamethasone 40 mg/day, 1 – 4 days; cisplatin 100 mg/m/day, 1 day; cytarabine 4 g/m/ day, 1 – 2 days) was started as second line treatment. Before administration of first DHAP chemotherapy protocol, the patient’s physical examination showed the following: body temperature 37.48C, blood pressure 120/80 mmHg, and radial arterial pulse 88 min. Sinusal rhythm was detected by electrocardiography (ECG), and normal echocardiographical examination revealed 60% ejection fraction. The patient complained of dizziness, five minutes after the administration of cytarabine. No other drugs (e.g. the dexamethasone) had been administered prior to the Ara-C. At this time, on physical examination of patient, pulse rate of 46 min and blood pressure of 100/65 mmHg were detected. His ECG showed sinusal bradycardia with 46 beats/min (Figure 1). Correct QT interval was 0.38 during bradycardia period. Bradycardia persisted 24 min after cessation of Ara-C. The patient’s pulse rate was 84 min prior to commencement of the Ara-C. No anti-emetic medications were administered at the time of Ara-C infusion, but granisetron was administered before cisplatin infusion on the first day of DHAP protocol. His condition improved with administration of 1 mg atropine, pulse increased to 96 min, and blood pressure increased to 110/ 65 mmHg. Patient was asymptomatic for 2 h after


Gynecological Endocrinology | 2004

Polyglandular autoimmune syndrome type III accompanied by common variable immunodeficiency.

Mithat Bahceci; Alpaslan Tuzcu; Semir Pasa; Orhan Ayyildiz; Sadiye Tuzcu

We identified polyglandular autoimmune (PGA) syndrome type III in a 24-year-old nurse with common variable immunodeficiency (CVID). An immune-mediated disorder, membranoproliferative glomerulonephritis, was diagnosed when she was 15 years old. Clinical examination and laboratory findings revealed a PGA syndrome due to the presence of hypergonadotropic hypogonadism, insufficient growth hormone response and thyroid autoimmunity. The patient had neither adrenal disease nor hypoparathyroidism. Therefore we concluded that this patient has PGA syndrome type III. This is an interesting case, because we could not find any previous report of such coexistence between PGA type III and CVID in a Medline search. Coexistence of these two entities may be a result of autoimmunity and the association of both conditions with human leukocyte antigen.

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