The role of eosinophil counts and megakaryocyte nuclei for distinction of acute and chronic immune thrombocytopenic purpura.

Objective: Immune thrombocytopenic purpura (ITP), the most common cause of thrombocytopenia, is clinically classified as acute and chronic. This study aimed to distinguish between acute/chronic ITP parameters examined at diagnosis via complete blood count (CBC), peripheral blood (PB) and bone marrow aspirate (BMA) smears. It would also contribute to early treatment options, cost-effective policies, and the life quality of patients.

Identification of novel antiplatelet agents by targeting Glycoprotein VI: A combined virtual screening study.

Cardiovascular diseases are the primary reason for deaths in the world. However, antiplatelet drugs in the market have limitations in use because of the risk of increased bleeding and other side effects that impair primary homeostasis. Therefore, safe and effective antithrombotic drugs are needed for the treatment of plaque formation in blood vessels.

Risk Factors for Graft-Versus-Host Disease and Survival in Pediatric Hematopoietic Stem Cell Transplant Recipients: A Single-Center Experience.

Objectives: Graft-versus-host disease is still one of the most important complications after hematopoietic stem cell transplantation. The risk factors remain unclear, with effects of graft-versus-host disease on survival varying among different centers. We aimed to determine risk factors that may affect development of graft-versus-host disease and the corresponding patient survival rates at a single pediatric hematopoietic stem cell transplant unit.

The contribution of neurocognitive situation, physical capacity and daily life activities to quality of life in childhood acute lymphoblastic leukemia survivors.

Background/aim: There are no extensive studies on the QL in children who completed acute lymphoblastic leukemia (ALL) treatment and currently living without any disease in Turkey. Our study aimed to analyze both the QL and the effects of physical, neurocognitive capacities on QL in childhood ALL survivors aged 7–12 years at the time of recruitment.

Materials And Methods: PedsQL cancer module 3.

Regulatory consideration on preparation and clinical use of COVID-19 convalescent plasma.

Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2), the cause of coronavirus disease (COVID-19), spreading from Wuhan to worldwide has been emerged since December 2019. Although scientists and researchers have been racing to develop specific therapeutic agents or vaccines against SARS-CoV-2 since the identification of the agent, either a drug or a vaccine has not been approved to treat or to prevent COVID-19 up to date. On the base of historical experiences, Convalescent Plasma (CP), a passive antibody therapy, has been evaluated as a hopeful and potential therapeutic option since the beginning of the COVID-19 outbreak.

An adolescent case of extensive Behçet`s disease successfully treated with Infliximab.

Isıyel E, Bakkaloğlu S, Oğuz D, Yenicesu İ, Boyunağa Ö, Özdemir Y, Damar Ç, Kandur Y, Akçaboy M, Aslan AT, Şişmanlar T, Hasanoğlan E, Buyan N. An adolescent case of extensive Behçet`s disease successfully treated with Infliximab. Turk J Pediatr 2019; 61: 585-588.

Inherited coagulation disorders in Turkish children: A retrospective, single-center cohort study.

Objective: This study aims to investigate the distribution, clinical characteristics and outcome of inherited coagulation disorders (ICD) in Turkish children.

Subjects And Methods: Data from all children (age<18 years) with ICD examined in our center were retrospectively reviewed.

Results: There were 403 children with ICD (233 males and 170 females) with a median age of four years at diagnosis.

The Role of Human Parvovirus B19 in the Pediatric Patients with Pancytopenia?

Background: Parvoviruses are small DNA viruses causing erythema infectiosum, which is known as the fifth disease. The aim of this study was to investigate the presence of Parvovirus B19 DNA by Real-Time-PCR retrospectively in clinical samples of children diagnosed as acute leukemia and aplastic anemia when investigating the cause of pancytopenia and to investigate its relationship with the clinical manifestations.

Methods: The study samples were collected between March 2014 and March 2018 in Gazi University, Faculty of Medicine, Department of Pediatric Hematology.

Successful application of CytoSorb hemadsorption in an immunocompromised teenager with collapsing glomerulopathy, acute respiratory distress syndrome, and sepsis.

Objective: CytoSorb hemadsorption is an adjunctive therapy in order to reduce elevated cytokine levels of interleukin-6, interleukin-1, and tumor necrosis factor alpha. Here we present a successful administration of CytoSorb hemadsorption in an immunocompromised pediatric patient with collapsing glomerulopathy, acute respiratory distress syndrome, and sepsis.

Data Sources: Clinical observations of one patient.

Utility of 18-fluorodeoxyglucose positron emission tomography in children with relapsed/refractory leukemia.

Objective: Few data are available on the clinical significance of 18-fluorodeoxyglucose positron emission tomography (FDG-PET/CT) results in patients with leukemia. We investigated the utility of FDG-PET/CT at the time of relapsed/refractory disease in pediatric patients with leukemia.

Methods: Medical records of 28 children with suspected leukemia progression or recurrence during/after chemotherapy or allogeneic stem cell transplantation (allo-SCT) were retrospectively reviewed to determine the utility of FDG-PET/CT.

Parvovirus B19 seroprevalence in Turkish blood donors.

Background/aim: Parvovirus risk in blood transfusion has become a popular research topic since there are limited data on parvovirus seroprevalence in blood donors in Turkey. The aim of this study was to investigate parvovirus seroprevalence in blood donors in Turkey. Materials and methods: Blood samples of 988 blood donors admitted to a university blood bank were obtained for parvovirus B19 IgM and IgG detection.

A child with atypically subtle clinical presentation of acute arterial ischaemic stroke in the middle cerebral artery.

Arterial ischaemic stroke in the paediatric population is considered a rare disease, and its diagnosis is often delayed due to the subtlety and variability of clinical symptoms, especially in younger patients. The clinical presentation and imaging features of ischaemic stroke in the paediatric population are variable depending on the underlying cause, affected artery and patient's age. Literally, acute occlusion of the middle cerebral artery shows significant clinical signs and symptoms, and riotous imaging findings due to the size of the territory.

Hematologic Findings of Inherited Metabolic Disease: They are More Than Expected.

Inherited metabolic diseases are pathologic conditions that generally develop as a result of impairment of the production or breakdown of protein, carbohydrate, and fatty acids. Early determination of hematological findings has a positive effect on the prognosis of metabolic diseases. Three hundred eighteen patients who were being followed-up within the previous 6 months at Department of Pediatric Nutrition and Metabolism, Gazi University, Turkey, were included in the study.

Relationship between obesity and iron deficiency anemia: is there a role of hepcidin?

Objectives: Iron deficiency is common in obese children although the underlying mechanism is unclear. The aim of this study was to investigate the associations between iron parameters, leptin, hepcidin and adiponectin levels in obese children.

Methods: A total of 237 children, ranging in age from 5 to 18 years, 180 with primary obesity and 57 healthy children and adolescents, were enrolled.

Investigation of an algorithm for anti HCV EIA reactivity in blood donor screening in Turkey in the absence of nucleic acid amplification screening.

Purpose: In this study we aimed to propose an algorithm for initial anti HCV EIA reactive blood donations in Turkey where nucleic acid amplification tests are not yet obligatory for donor screening.

Methods: A total of 416 anti HCV screening test reactive donor samples collected from 13 blood centers from three cities in Turkey were tested in duplicate by Ortho HCV Ab Version 3.0 and Radim HCV Ab.

Association of CYP3A5 Expression and Vincristine Neurotoxicity in Pediatric Malignancies in Turkish Population.

Vincristine is a widely used chemotherapeutic agent in the treatment of childhood malignancies. Neuropathy is the most common adverse effect. CYP3A4 and CYP3A5 enzymes of cytochrome p450 enzyme system are responsible in vincristine metabolism.

Monoclonal B-cell lymphocytosis in blood donors in Turkey.

Objectives: Monoclonal B-cell lymphocytosis (MBL) is a precursor state of chronic lymphocytic leukemia (CLL) with peripheral lymphocytosis below 5 × 10/l. The diagnostic criteria exclude the presence of lymphadenopathy, organomegaly, infections, autoimmune diseases or any sign of a lymphoproliferative disorder. This prospective study was designed in order to evaluate the frequency of MBL in blood donors in Turkey.

Juvenile Myelomonocytic Leukemia in Turkey: A Retrospective Analysis of Sixty-five Patients.

Objective: This study aimed to define the status of juvenile myelomonocytic leukemia (JMML) patients in Turkey in terms of time of diagnosis, clinical characteristics, mutational studies, clinical course, and treatment strategies.

Materials And Methods: Data including clinical and laboratory characteristics and treatment strategies of JMML patients were collected retrospectively from pediatric hematology-oncology centers in Turkey.

Results: Sixty-five children with JMML diagnosed between 2002 and 2016 in 18 institutions throughout Turkey were enrolled in the study.

Successful total hip replacement with sequential administration of bypassing agents in an adolescent boy with hemophilia A and high inhibitor titers.

: There are only a few reports of total hip replacement in patients with hemophilia A and inhibitors. We performed total hip replacement in an 18-year-old adolescent boy who had high inhibitor titers since infancy. Recombinant factor VIIa (NovoSeven) was used as a bypass agent during the surgery.

Early severe anemia as the first sign of cystic fibrosis.

Unlabelled: Severe anemia is reported to occur rarely in patients with cystic fibrosis (CF). This study aimed to determine the factors associated with early severe anemia in infants with CF. This study included 231 infants with CF from 3 pediatric CF centers ten year period that were retrospectively reviewed in terms of severe anemia as the first sign of CF.

Iron-refractory iron deficiency anemia (IRIDA) cases with 2 novel TMPRSS6 mutations.

Iron-refractory iron deficiency anemia (IRIDA) is a rarely diagnosed autosomal recessive disorder that presents with hypochromic, microcytic anemia due to mutations in TMPRSS6, which encodes matriptase-2. Contrary to classical iron deficiency anemia, serum hepcidin levels are found to be elevated in this disorder. Here, we report 5 cases from 4 unrelated families with inadequate response to iron therapy, who were consequently diagnosed as IRIDA.

Influence of Folate-Related Gene Polymorphisms on High-Dose Methotrexate-Related Toxicity and Prognosis in Turkish Children with Acute Lymphoblastic Leukemia.

Objective: High-dose methotrexate (HD-MTX) is widely used in the consolidation phase of childhood acute lymphoblastic leukemia (ALL), but the roles that polymorphisms in folate-related genes (FRGs) play in HD-MTX toxicity and prognosis in children with ALL are not understood. The aims of this study were to investigate the frequencies of polymorphisms in the genes for thymidylate synthase (TS), methionine synthase reductase (MTRR), and methylene tetrahydrofolate reductase (MTHFR) in Turkish children with ALL and to assess associations between these polymorphisms and HD-MTX-related toxicity and leukemia prognosis in this patient group.

Materials And Methods: FRG polymorphisms were assessed by real-time polymerase chain reaction.

The Effect of Carbon Dioxide Insufflation Applied at Different Pressures and Periods on Thrombotic Factors.

The aim of this experimantal study which is applied on rats, is to determine the differences on the clotting factors over the application of low and high intraabdominal pressure (IAP) values in different periods of time in carbon dioxide (CO2) pneumoperitoneum. Thirty rats were randomized into five groups (n = 6): a control group (Group K) and 1 h and 6 mm Hg IAP (Group A), 2 h and 6 mm Hg IAP (Group B), 1 h and 12 mm Hg IAP (Group C) and 2 h and 12 mm Hg IAP were created with CO2 pneumoperitoneum (Group D). At the end of the experiment, plasma samples taken from subjects and fibrinogen, FII (prothrombin), FV, FVII, FVIII, FIX, FX, FXI, FXII, von willebrand's factor (vWF), ristocetin cofactor, protein C, protein S, antithrombin III (AT III) levels are studied.

Prognostic Factors and Long-Term Outcome in 52 Turkish Children With Hemophagocytic Lymphohistiocytosis.

Objectives: Hemophagocytic lymphohistiocytosis is a syndrome of pathologic immune activation that shares similar clinical and laboratory phenotypes with severe sepsis. Recent studies led to better recognition of hemophagocytic lymphohistiocytosis by clinicians, but no consensus exists on the criteria for high-risk patients.

Design: We retrospectively reviewed the medical records of patients diagnosed with hemophagocytic lymphohistiocytosis to analyze the risk factors associated with poor outcome.