Характеристика лямблиоза и энтеробиоза у детей Астраханской области

Purpose: assessment of the clinical and epidemiological situation of current invasions in children of the Astrakhan region. 315 outpatient cards of children were analyzed in 2016.The diagnosis of Giardiasis was made to 151 children, the diagnosis of Enterobiasis — 164. The age of all observed children ranged from 9 months to 17 years. The largest part was made up of children aged 3 to 14 years of age — 80.3%, among them enterobiasis was identified — in 46.7%, giardiasis — in 33.6% of cases. Most of the children  — 90.5% were from organized groups (they attended preschool institutions or school). The reasons for the examination of all children were varied. Some children — 63.5% went to the doctor with complaints  or clinical symptoms. Another part of the children — 33% of the diagnosis was made as a result of preventive examinations.In most cases — 78.7% various bad habits were identified. Thus, geophagy (the habit of eating the earth) was noted in 33.3% of children, and onigophagy (the habit of biting the nails) in 24.8%. In 21.3% of cases, bad habits were absent. Contact with pets was established in 22.9% of children. According to the ultrasound, most children with giardiasis (83.8%) had pathology (reactive changes of the pancreas, liver, gallbladder dyskinesia, etc.)In case of giardiasis niferator, albendazole was administered. In case of enterobiasis albendazole, pyrantel, and mebendazole were administered in age dosages. After antiparasitic treatment, in 91.4% of cases, the clinical symptoms of the disease completely disappeared, with giardiasis — in 85.4%, with enterobiasis — in 97% of cases.In 1.3% of children with giardiasis, after several courses of antiparasitic drugs, Giardia was found in feces in the absence of complaints and clinical symptoms, indicating a possible Giardia carrier parasite in children.С целью оценки клинико-эпидемиологической ситуации по актуальным инвазиям у детей Астраханской области было проанализировано 315 амбулаторных карт детей, обратившихся в 2016  г. Диагноз Лямблиоз был поставлен 151 ребенку, диагноз Энтеробиоз — 164.Возраст всех наблюдаемых детей составлял от 9 месяцев до 17 лет. Наибольшую часть составили дети в возрасте от 3 до 14 лет жизни — 80,3%, среди них энтеробиоз был выявлен в 46,7%, лямблиоз — в 33,6% случаев. Большинство детей — 90,5% были из организованных коллективов (посещали  детские дошкольные учреждения или школу). Причины обследования всех детей были разнообразными.  Часть  детей  — 63,5% обратились к специалисту в связи с наличием у них тех или иных клинических симптомов и жалоб. Другой части  детей  — 33% диагноз был выставлен в результате профилактических осмотров.В большинстве  случаев — 78,7% были выявлены различные вредные привычки. Так, геофагия (привычка есть землю) отмечалась у 33,3% детей, а онигофагия (привычка грызть ногти) — у 24,8%. В 21,3% случаев вредные привычки отсутствовали. Котакт с домашними животными был установлен  у 22,9% детей. По данным УЗИ, у большинства детей с лямблиозом (83,8%) отмечалась патология (реактивные изменения поджелудочной железы, печени, дискинезия желчного пузыря и др.).В качестве антипаразитарной  терапии при лямблиозе назначался нифуратель, альбендазол, при энтеробиозе — альбендазол, пирантел и мебендазол в возрастных дозировках. После лечения в 91,4% случаев клинические симптомы заболевания полностью исчезли, при лямблиозе — в 85,4%, при энтеробиозе — в 97% случаев.У 1,3% детей с лямблиозом после нескольких курсов антипаразитарными препаратами обнаруживались лямблии в фекалиях при отсутствии жалоб и клинических симптомов, что свидетельствует о возможном паразитоносительстве лямблий у детей

The folding of the specific DNA recognition subdomain of the sleeping beauty transposase is temperature-dependent and is required for its binding to the transposon DNA.

The reaction of DNA transposition begins when the transposase enzyme binds to the transposon DNA. Sleeping Beauty is a member of the mariner family of DNA transposons. Although it is an important tool in genetic applications and has been adapted for human gene therapy, its molecular mechanism remains obscure. Here, we show that only the folded conformation of the specific DNA recognition subdomain of the Sleeping Beauty transposase, the PAI subdomain, binds to the transposon DNA. Furthermore, we show that the PAI subdomain is well folded at low temperatures, but the presence of unfolded conformation gradually increases at temperatures above 15°C, suggesting that the choice of temperature may be important for the optimal transposase activity. Overall, the results provide a molecular-level insight into the DNA recognition by the Sleeping Beauty transposase

Characteristics of Giardiasis and Enterobiаsis in children of Astrakhan region

Purpose: assessment of the clinical and epidemiological situation of current invasions in children of the Astrakhan region. 315 outpatient cards of children were analyzed in 2016.The diagnosis of Giardiasis was made to 151 children, the diagnosis of Enterobiasis — 164. The age of all observed children ranged from 9 months to 17 years. The largest part was made up of children aged 3 to 14 years of age — 80.3%, among them enterobiasis was identified — in 46.7%, giardiasis — in 33.6% of cases. Most of the children  — 90.5% were from organized groups (they attended preschool institutions or school). The reasons for the examination of all children were varied. Some children — 63.5% went to the doctor with complaints  or clinical symptoms. Another part of the children — 33% of the diagnosis was made as a result of preventive examinations.In most cases — 78.7% various bad habits were identified. Thus, geophagy (the habit of eating the earth) was noted in 33.3% of children, and onigophagy (the habit of biting the nails) in 24.8%. In 21.3% of cases, bad habits were absent. Contact with pets was established in 22.9% of children. According to the ultrasound, most children with giardiasis (83.8%) had pathology (reactive changes of the pancreas, liver, gallbladder dyskinesia, etc.)In case of giardiasis niferator, albendazole was administered. In case of enterobiasis albendazole, pyrantel, and mebendazole were administered in age dosages. After antiparasitic treatment, in 91.4% of cases, the clinical symptoms of the disease completely disappeared, with giardiasis — in 85.4%, with enterobiasis — in 97% of cases.In 1.3% of children with giardiasis, after several courses of antiparasitic drugs, Giardia was found in feces in the absence of complaints and clinical symptoms, indicating a possible Giardia carrier parasite in children

DNA-binding of folded and unfolded conformations of the PAI subdomain.

<p>(A) 2D [¹H,¹⁵N]-HSQC spectrum of the PAI subdomain collected at the temperature of 5°C in 25 mM aqueous sodium phosphate buffer at pH 5.0 in the presence of 250 mM NaCl. The folded and unfolded conformations exist in slow exchange on the NMR time scale. Thus, two resonances are observed for each residue. Non-overlapping resonances originating from the same residue in both the folded and unfolded conformations are labeled. (B) Cartoon representation of the PAI subdomain (PDB code 2m8e <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0112114#pone.0112114-Carpentier1" target="_blank">[7]</a>). The DNA-binding site is colored blue. Side chains of the residues that were used for the analysis of the DNA-binding are labeled and shown as red sticks. (C) Relative intensities of resonances corresponding to the folded and unfolded conformations are plotted as a function of PAI:DNA molar ratio. Relative intensities were calculated by dividing the resonance intensity at a given PAI:DNA molar ratio by the intensity of this resonance in the absence of DNA.</p

2D [¹H,¹⁵N]-HSQC spectra of the PAI subdomain.

<p>The spectra were collected in 25 mM aqueous sodium phosphate buffer at pH 5.0 (top panel) and 7.0 (bottom panel) in the range of temperatures from 5 to 45°C with a 5°C increment.</p

Intrinsic tyrosine fluorescence.

<p>(Left panel) The location of Y46 on the cartoon representation of the PAI subdomain (PDB code 2m8e <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0112114#pone.0112114-Carpentier1" target="_blank">[7]</a>) is shown. (Right panel) The integral fluorescence of Y46 at pH 5.0 (squares) and pH 7.0 (circles) is plotted vs. temperature. Shown data is the average of three independent experiments. Error bars in many cases do not exceed the size of the symbol. Solid lines represent best fits of experimental data.</p

Self-diffusion coefficients.

<p>The PAI self-diffusion coefficient at pH 5.0 (squares) and 7.0 (circles) are plotted vs. temperature over the range from 5 to 35°C. Protein samples were prepared in 25 mM sodium phosphate buffer using 100% D₂O. The temperature dependence of the self-diffusion coefficient of BPTI (stars) is shown for comparison. Solid lines represent fits of Arrhenius dependence of the self-diffusion coefficient to experimental data.</p

Influence of different chromosomal abnormalities in Ph-positive bone marrow cells on the chronic myeloid leukemia course during tyrosine kinase inhibitors therapy

The additional molecular and chromosomal abnormalities (ACA) in Phositive cells usually considered as a genetic marker of chronic myeloid leukemia (CML) progression. 457 patients in different CML phases received tyrosine kinase inhibitors (1st and 2nd generation) were studied. During therapy 50 cases with additional chromosomal abnormalities in Ph+ clone (22 of them in chronic CML phase) were revealed (median follow-up from CML diagnosis – 117 months, median imatinib therapy – 62 months). 86 % of patients in chronic phase with Ph+- cell abnormalities were cytogenetic resistance, and their 5-years overall survival was 80 % which was significantly lower than in patients without ACA (p &lt; 0.005). The treatment results depend on chromosomal abnormalities detected. In patients with additional chromosome 8 imatinib therapy is effective, although complete cytogenetic response (CCR) is achieved only in the later therapy stages. In patients with additional translocations CCR also achieved with imatinib or 2nd generation TKI. Only a third of patients with additional Ph-chromosome or BCR/ABL amplification achieved complete suppression of Ph+ clone using 2nd generation TKI. The presence of additional chromosome 7 abnormalities and complex karyotype disorders involving isochromosome i(17)(q10) are poor prognostic factors of TKI treatment failures.</p