hrp0092p3-108 | Fat, Metabolism and Obesity | ESPE2019

Vitamin B12 Levels in Children After Metformin Treatment

Yordanova Desislava , Todorova Zdravka , Dimitrova-Mladenova Mihaela , Stefanova Elisaveta

Background and Aims: Vitamin B12 is an essential micronutrient required for optimal hemopoetic, cardiovascular and neuro-cognitive functions. There are some literature data that Metformin induces vitamin B12 malabsorption, which may increase the risk of developing vitamin B12 deficiency and subsequently elevation of homocysteine levels. High concentrations of homocysteine has been associated with higher risk of coronary artery disease, arterial hypertension, h...

hrp0086p2-p168 | Bone & Mineral Metabolism P2 | ESPE2016

A Case of Genetically Proven Carbonic Anhydrase II Deficiency

Todorova Zdravka , Stefanova Elissaveta , Kazakova Krasimira , Yordanova Desislava , Litvinenko Ivan

Background: Carbonic anhydrase II (CAII) deficiency is extremely rare (<1:1 000 000) autosomal recessive disease, which is characterized by the triad of osteopetrosis, basal ganglia calcifications and renal tubular acidosis. In addition short stature, facial dysmorfism and different degree of mental retardation are possible features. Different mutations of the gene for CAII on 8q21.2 lead to impaired enzyme activity and typical clinical, biochemical and imaging manifestati...

hrp0086p2-p543 | Fat Metabolism and Obesity P2 | ESPE2016

25-Hydroxyvitamin D Concentrations in Pubertal Children with Obesity

Yordanova Desislava , Stefanova Elisaveta , Kazakova Krasimira , Todorova Zdravka , Dimitrova Mihaela

Background: The prevalence of childhood obesity has been rapidly increasing worldwide and the last report of World Health Organisation define it as epidemic and one of the most serious global public health challenges for the 21st century. Obese children and adolescents are at an increased risk of developing various health problems including type 2 diabetes mellitus, hypertension, osteoarthritis, cardiovascular disease. Obesity is a risk factor for vitamin D deficiency. Vitamin...

hrp0082p3-d2-645 | Adrenals &amp; HP Axis (1) | ESPE2014

Untreated Congenital Hyperplasia with Central Precocious Puberty

Dimitrova Mihaela , Stefanova Elisaveta , Kazakova Krasimira , Yordanova Desislava , Todorova Zdravka

Background: Congenital adrenal hyperplasia (CAH) may cause early maturation of hypothalamic–pituitary–gonadal axis when the initiation of corticosteroid treatment is late or/and there is poor compliance. The latter sometimes leads to a lack of treatment. In most cases, if the child survives, he or she develops central precocious puberty.Case report: We present a 12-year-old boy born of a normal pregnancy and delivery. In the first months of lif...

hrp0082p3-d3-648 | Autoimmune Endocrine Disease | ESPE2014

Genetically Proven APS Type 1 in Two Siblings

Yordanova Desislava , Stefanova Elisaveta , Kazakova Krasimira , Todorova Zdravka , Dimitrova Mihaela

Background: APS type 1 is characterized by an autosomal recessive inheritance. The clinical diagnosis is based on the presence of at least two of the three following diagnostic criteria: chronic mucocutaneous candidiasis, chronic hypoparathyroidism, and autoimmune adrenal insufficiency. Patients often develop other autoimmune diseases. APS type 1 is caused by mutations in the AIRE gene which encodes the AIRE protein. The protein probably acts as a transcription factor.<p c...

hrp0084p2-346 | Fat | ESPE2015

Metformin Treatment for Obese Children and Adolescents with Insulin Resistance

Todorova Zdravka , Stefanova Elissaveta , Kazakova Krasimira , Yordanova Desislava

Background: Obesity in children is already a global health problem. Obese children and adolescents with insulin resistance provide the pediatric healthcare professionals management challenge. Obesity with insulin resistance, dyslipidemia and elevated blood pressure constitute the metabolic syndrome and each of these is an independent risk factor for cardiovascular disease (CVD). Metformin is well-established oral hypoglycaemic agent in the treatment of adult and young patients...

hrp0084p3-674 | Bone | ESPE2015

25-Hydroxy Vitamin D Levels in Patients with Chronic Diseases on Corticosteroid Treatment

Yordanova Desislava , Stefanova Elissaveta , Kazakova Krasimira , Todorova Zdravka , Dimitrova Mihaela

Background: Corticosteroids are medicines that are used to treat many chronic diseases. They are very effective anti-inflammatory drugs by suppressing the immune system, and are also used as a replacement therapy in conditions with low levels of endogenous cortisol. Glucocorticoid effects on bone metabolism include: reduced absorption of calcium in the intestine; increased calcium urinary excretion; increased bone resorption and reduced bone density. Corticosteroid treatment i...

hrp0098p2-25 | Adrenals and HPA Axis | ESPE2024

X-linked congenital adrenal hypoplasia due to a novel mutation in NR0B1 gene

Todorova Zdravka , Yordanova Desislava , Dimitrova Mihaela , Gerdjikova Vanya , Baycheva Mila

Introduction: NR0B1 gene encodes the DAX 1 protein, an untypical member of the orphan nuclear receptor superfamily. It plays a key role in the development and function of the adrenal glands and hypothalamic-pituitary-gonadal axis. Deleterious or intragenic mutations cause X –linked congenital adrenal hypoplasia manifested as primary adrenal insufficiency (PAI) in infancy or early childhood often combined with hypogonadotropic hypogonadism.<p class="a...

hrp0092p3-256 | Thyroid | ESPE2019

Pseudoprecocious Puberty in a Girl with Untreated Acquired Hypothyroidism

Dimitrova-Mladenova Mihaela , Yordanova Desislava , Todorova Zdravka , Dasheva Anna , Stefanova Elisaveta

Background: Hypothyroidism is associated with impared growth and pubertal delay. However, there are female patients with untreated acquired hypothyroidism and paradoxical precocious pubertal signs, which include thelarche, galactorrhoea and menarche. These girls do not have axillary and pubic hair development. The exact mechanism for this pseudoprecocious puberty is not clear. The most probable explanation is that high levels of TSH act through the FSH recepto...

hrp0089p3-p053 | Bone, Growth Plate &amp; Mineral Metabolism P3 | ESPE2018

HDR Syndrome: A Case Report of Hypoparathyroidism, Hearing Loss and Renal Agenesis

Dimitrova-Mladenova Mihaela , Todorova Zdravka , Stefanova Elisaveta , Kostova Antoaneta , Yordanova Desislava , Miteva Polina , Rusinov Dimitar

Background: Hypoparathyroidism, sensorineural deafness, and renal disease (HDR syndrome, Barakat syndrome) is a rare condition, caused by a mutation on chromosome 10p which affects the GATA3 gene. GATA3 encodes a transcription factor important for the embryonic development of the parathyroid gland, the auditory stem, and the kidneys. Its expression has also been found in the thymus and the central nervous system. A wide range of renal involvement has been rep...