hrp0095p2-150 | GH and IGFs | ESPE2022

Alterations in stem cell populations during rIgF-1 (Increlex) therapy in patients with SPIGF1D

Bossowski Artur , Grubczak Kamil , Stożek Karolina , Starosz Aleksandra , Bossowski Filip , Moniuszko Marcin

Pathway involving insulin-like growth factor 1 (IGF-1) plays significant role in growth and development. Crucial role of IGF-1 was discovered inter alia through studies involving deficient patients with short stature, including SPIGFD individuals. Noteworthy, despite disturbances in proper growth, elevated values for selected stem cell populations were found in IGF-1 deficient patients. Therefore, here we focused on investigating role of these cells - very small embryonic-like...

hrp0095p2-281 | Thyroid | ESPE2022

Effects of therapy on Th1, Th17, Th22 and Bregs in pediatric patients with Graves' disease

Stożek Karolina , Grubczak Kamil , Starosz Aleksandra , Bossowski Filip , Moniuszko Marcin , Bossowski Artur

Introduction: The precise pathogenesis of Graves’ disease (GD) still remains unclear, especially in the field of immunological aspects. Thyroid infiltration by reactive T and B lymphocytes plays a crucial role in the course of autoimmune thyroid diseases (ATD). Previous pattern of inflammation process was characterized by the presence of two antagonistic groups of T effector or also called- helper cells: Th1 and Th2. Recently, more attention is paid to T...

hrp0097p1-197 | Thyroid | ESPE2023

Effects of methimazole therapy on effector T and B regulatory cells in pediatric patients with Graves' disease

Stożek Karolina , Grubczak Kamil , Starosz Aleksandra , Bossowski Filip , Moniuszko Marcin , Bossowski Artur

Introduction: The incidence of autoimmune thyroid diseases (ATD) is constantly rising. Graves’ disease (GD) remains the most common cause of thyrotoxicosis in pediatric population, but the exact pathogenesis of GD is still not fully understood. The immunological basis of ATD assumes an imbalance between effector and regulatory T lymphocytes. B regulatory cells (Breg) are able to suppress the pro-inflammatory properties of effector T cells. Methimazole (M...

hrp0097p1-589 | Thyroid | ESPE2023

Thyrotropin receptor stimulating antibodies in pediatric patients with Graves’ diseases using ultra-rapid turbo bioassay

Bossowski Artur , Hatun Burak , Sawicka Beata , Stożek Karolina , Bossowski Filip , J Kahaly George

Background: Thyrotropin receptor (TSH-R) stimulating autoantibodies (TSAb) are present in 90-100% of patients with Graves’ disease (GD). TSAb are functional, impact thyroid function, and are clinically relevant. This study we performed in a pediatric patients with dynamic of Graves’ disease before and during methimazole therapy and in patient with Hashimoto’s thyroiditis using a novel and ultra-rapid TSAb andTBAb bioassay.<p class="abstex...

hrp0095p2-140 | Fetal, Neonatal Endocrinology and Metabolism | ESPE2022

POU1F1 gene mutation as a cause of central hypothyroidism and growth hormone deficiency: a case report

Sawicka Beata , Borysewicz-Sańczyk Hanna , Sztatyłowicz Aleksandra , Michalak Justyna , Stożek Karolina , Bossowski Artur

Background: Thyroid hormones are necessary for normal child development. Hypothyroidism, associated with insufficient amounts of free triiodothyronine and thyroxine, may not only cause poor growth rate, but also results in impaired central nervous system development. In Poland, newborn screening for congenital primary hypothyroidism, the incidence of which is reported to be 1:2500- 1:4000 births, has been performed for many years. Secondary hypothyroidism, cau...

hrp0098p1-288 | Thyroid 3 | ESPE2024

Assessment of regulatory B cells in peripheral blood and zinc transporter 8 expression in thyroid tissue in children with autoimmune thyroid diseases

Stożek Karolina , Starosz Aleksandra , Opęchowska Aleksandra , Bossowski Filip , Moniuszko Marcin , Grubczak Kamil , Bossowski Artur

Introduction: There has been a growing trend in the incidence of autoimmune thyroid diseases (ATD) in the pediatric group of patients. The new aspects of its pathogenesis may contribute to understand innovative methods of prevention and treatment. Regulatory B cells (Breg) allow the maintenance of immune homeostasis by neutralizing the negative reactions of effector cells. Attention has been recently paid also to the new environmental factor like zinc and its ...

hrp0098p3-222 | Pituitary, Neuroendocrinology and Puberty | ESPE2024

Pituitary macroadenoma in a 17-year-old girl - therapeutic difficulties

Borysewicz-Sańczyk Hanna , Parchanowicz Elżbieta , Wantulok Zuzanna , Kowieska Jolanta , Sawicka Beata , Stożek Karolina , Michalak Justyna , Zieliński Grzegorz , Bossowski Artur

Prolactinoma is the most common pituitary adenoma in children and adolescents originating from lactotrophic cells, autonomously secreting prolactin, usually diagnosed >12 years of age, more often in girls. We present the case of a 17-year-old girl, diagnosed in the Endocrinology Outpatient Clinic of the University Children's Clinical Hospital in Bialystok, due to excessive weight gain and secondary amenorrhoea. The girl was referred to the Department of Paediatrics, En...

hrp0098p3-269 | Thyroid | ESPE2024

The comorbidity of other autoimmune diseases in children with autoimmune thyroid diseases

Michalak Justyna , Jamiołkowska-Sztabkowska Milena , Sawicka Beata , Borysewicz- Sańczyk Hanna , Stożek Karolina , Głowińska- Olszewska Barbara , Bossowski Artur

Key words: autoimmune diseases, autoimmune thyroid disease, Hashimoto thyroiditis, Graves DiseaseIntroduction: Autoimmune diseases are significant and common health problem, which incidence in population increase. They affect 3- 5% of the general population, mainly females. The most common in children are: autoimmune thyroid disease (AITD) and type 1 diabetes mellitus (T1DM). AITD and T1DM are known from their prevalence...

hrp0094p2-475 | Thyroid | ESPE2021

Case study of 13- year-old boy suffering from papillary thyroid cancer in stage pT3aN1bMX

Bossowski Artur , Borysewicz-Sanczyk Hanna , Stożek Karolina , Dzięcioł Janusz , Czarniecka Agnieszka , Handkiewicz-Junak Daria , Jarząb Barbara

Papillary cancer represents majority of thyroid malignancies in children. However prognosis remains very successful. In recent years, we use elastography, except biopsy and standard ultrasonography in thyroid lesions diagnostic. We present a case of a male patient at the age of 13 years, with a history of ADHD and school phobia who was referred to Endocrinology Outpatient Clinic due to partial empty sella syndrome. Family history of endocrinological disorders was negative. Ph...

hrp0097p1-495 | GH and IGFs | ESPE2023

Difficulties in interpreting insulin-like growth factor 1 (IGF-1) levels in short stature children born small for gestational age (SGA) treated with recombinant human growth hormone (rhGH) based on data from six clinical centres in Poland.

Glińska Marta , Walczak Mieczysław , Wikiera Beata , Pyrżak Beata , Majcher Anna , Paluchowska Monika , Gawlik Aneta , Antosz Aleksandra , Kusz Marcin , Bossowski Artur , Stożek Karolina , Wędrychowicz Anna , Starzyk Jerzy , Petriczko Elżbieta

Introduction: The assessment of IGF-1 concentrations is one of the parameters used for evaluating response to rhGH treatment. An increase in IGF-1 concentration positively correlates with growth improvement. The IGF-1 concentrations significantly above the reference range may increase total the risk of possible side effects. High IGF-1 concentration is one of the reasons for rhGH dose reduction which affects the response to treatment.<st...