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<article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="other" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Pediatric Hematology/Oncology and Immunopathology</journal-id><journal-title-group><journal-title xml:lang="en">Pediatric Hematology/Oncology and Immunopathology</journal-title><trans-title-group xml:lang="ru"><trans-title>Вопросы гематологии/онкологии и иммунопатологии в педиатрии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1726-1708</issn><issn publication-format="electronic">2414-9314</issn><publisher><publisher-name xml:lang="en">Fund Doctors, Innovations, Science for Children</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">674</article-id><article-id pub-id-type="doi">10.24287/1726-1708-2023-22-3-74-79</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>ORIGINAL ARTICLES</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНЫЕ СТАТЬИ</subject></subj-group><subj-group subj-group-type="article-type"><subject></subject></subj-group></article-categories><title-group><article-title xml:lang="en">Association between the levels of serum vitamin D and trace elements and joint health in children with hemophilia</article-title><trans-title-group xml:lang="ru"><trans-title>Association between the levels of serum vitamin D and trace elements and joint health in children with hemophilia</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-2366-8009</contrib-id><name-alternatives><name xml:lang="en"><surname>Mahmoud</surname><given-names>A. A.S.</given-names></name><name xml:lang="ru"><surname>Ragab</surname><given-names>S. M.</given-names></name></name-alternatives><address><country country="EG">Egypt</country></address><bio xml:lang="en"><p>Seham M. Ragab</p><p>Menoufia</p></bio><bio xml:lang="ru"><p>Menoufia</p></bio><email>asmaasoliman50@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name><surname>Sharaf</surname><given-names>A. E.A.</given-names></name><address><country country="EG">Egypt</country></address><bio xml:lang="en"><p>Alzahraa E.A. Sharaf</p></bio><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Bayomy</surname><given-names>N. R.M.</given-names></name><name xml:lang="ru"><surname>Bayomy</surname><given-names>N. M.</given-names></name></name-alternatives><address><country country="EG">Egypt</country></address><bio xml:lang="en"><p>Noha R.M. Bayomy</p><p>Menoufia</p></bio><bio xml:lang="ru"><p>Menoufia</p></bio><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name><surname>Abdel Nour</surname><given-names>B. S.T.</given-names></name><address><country country="EG">Egypt</country></address><bio xml:lang="en"><p>Beshoy S.T. Abdel Nour</p></bio><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name><surname>Mahmoud</surname><given-names>A. A.</given-names></name><address><country country="EG">Egypt</country></address><bio><p>Asmaa Abdel Sameea Mahmoud - Assistant Professor of Pediatrics, Faculty of Medicine, Menoufia University Hospital</p><p>Yassin Abdel-Ghafar St., Shebin El Kom, 32511 Menoufia</p></bio><email>asmaasoliman50@gmail.com</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff id="aff1"><institution>Menoufia University</institution></aff><aff id="aff2"><institution>Sohag University</institution></aff><aff id="aff3"><institution>Sohag Health Insurance Hospital</institution></aff><pub-date date-type="pub" iso-8601-date="2023-10-03" publication-format="electronic"><day>03</day><month>10</month><year>2023</year></pub-date><volume>22</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>74</fpage><lpage>79</lpage><history><date date-type="received" iso-8601-date="2023-01-13"><day>13</day><month>01</month><year>2023</year></date><date date-type="accepted" iso-8601-date="2023-03-23"><day>23</day><month>03</month><year>2023</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2023, «D. Rogachev NMRCPHOI»</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2023, ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="en">«D. Rogachev NMRCPHOI»</copyright-holder><copyright-holder xml:lang="ru">ФГБУ «НМИЦ ДГОИ им. Дмитрия Рогачева» Минздрава России</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">https://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://hemoncim.com/jour/article/view/674">https://hemoncim.com/jour/article/view/674</self-uri><abstract xml:lang="en"><p>Hemophilia is defined as X-linked recessive bleeding disorder. Recurrent bleeding episodes lead to hemarthrosis.</p><p><bold>Objectives:</bold> to investigate the levels of serum 25(OH) D and trace elements in children with hemophilia A and B and to identify the possible association of these factors with Hemophilia Joint Health Score (HJHS). This case-control study was conducted among children with hemophilia A and B. A total of 48 cases were recruited from the hematology units at the Menoufia University Hospital (n = 36) and Sohag University Hospital (n = 12) from December 2020 to February 2022. Forty healthy controls were matched to cases on age, sex and socioeconomic status. Serum zinc and magnesium levels in the hemophilia patients were significantly lower than in the controls, while serum alkaline phosphatase levels in the cases were significantly higher than in the controls. Informed consent was obtained from all the children's parents and ethical approval was acquired from the ethical committee (ID: 5/2020PEDI38), Faculty of Medicine, Menoufia University. The levels of phosphorus and calcium were the same in two groups. Serum 25(OH) D levels were deficient in 85.4% of the cases and insufficient in 14.6%. None of the hemophilia patients had sufficient levels of serum 25(OH) D. There was no significant correlation between HJHS and the levels of serum trace elements but there was a significant positive correlation between HJHS and annualized bleeding rate and a significant negative correlation between HJHS and serum vitamin D. There was no significant difference regarding the demographic data except for weight and body mass index. The patients had significantly higher weight and body mass index compared to the control group. The levels of serum vitamin D and trace elements were decreased in hemophilia patients, and these low values were associated with the worst joint health.</p></abstract><trans-abstract xml:lang="ru"><p>Hemophilia is defined as X-linked recessive bleeding disorder. Recurrent bleeding episodes lead to hemarthrosis.</p><p><bold>Objectives:</bold> to investigate the levels of serum 25(OH) D and trace elements in children with hemophilia A and B and to identify the possible association of these factors with Hemophilia Joint Health Score (HJHS). This case-control study was conducted among children with hemophilia A and B. A total of 48 cases were recruited from the hematology units at the Menoufia University Hospital (n = 36) and Sohag University Hospital (n = 12) from December 2020 to February 2022. Forty healthy controls were matched to cases on age, sex and socioeconomic status. Serum zinc and magnesium levels in the hemophilia patients were significantly lower than in the controls, while serum alkaline phosphatase levels in the cases were significantly higher than in the controls. Informed consent was obtained from all the children's parents and ethical approval was acquired from the ethical committee (ID: 5/2020PEDI38), Faculty of Medicine, Menoufia University. The levels of phosphorus and calcium were the same in two groups. Serum 25(OH) D levels were deficient in 85.4% of the cases and insufficient in 14.6%. None of the hemophilia patients had sufficient levels of serum 25(OH) D. There was no significant correlation between HJHS and the levels of serum trace elements but there was a significant positive correlation between HJHS and annualized bleeding rate and a significant negative correlation between HJHS and serum vitamin D. There was no significant difference regarding the demographic data except for weight and body mass index. The patients had significantly higher weight and body mass index compared to the control group. The levels of serum vitamin D and trace elements were decreased in hemophilia patients, and these low values were associated with the worst joint health.</p></trans-abstract><kwd-group xml:lang="en"><kwd>hemarthrosis</kwd><kwd>Hemophilia Joint Health Score</kwd><kwd>hemophilia</kwd><kwd>target joint</kwd><kwd>vitamin D</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>hemarthrosis</kwd><kwd>Hemophilia Joint Health Score</kwd><kwd>hemophilia</kwd><kwd>target joint</kwd><kwd>vitamin D</kwd></kwd-group><funding-group><funding-statement xml:lang="en">Not specified</funding-statement><funding-statement xml:lang="ru">Not specified</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><citation-alternatives><mixed-citation xml:lang="en">1. Payal V., Sharma P., Goyal V., Jora R., Parakh M., Payal D. 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