<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE root>
<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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">V.F.Snegirev Archives of Obstetrics and Gynecology</journal-id><journal-title-group><journal-title xml:lang="en">V.F.Snegirev Archives of Obstetrics and Gynecology</journal-title><trans-title-group xml:lang="ru"><trans-title>Архив акушерства и гинекологии им. В.Ф. Снегирева</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2313-8726</issn><issn publication-format="electronic">2687-1386</issn><publisher><publisher-name xml:lang="en">Eco-Vector</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">44844</article-id><article-id pub-id-type="doi">10.17816/2313-8726-2020-7-3-158-164</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Original study articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Оригинальные исследования</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="zh"><subject>Original study articles</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Polymorphism of genes affecting remodeling of connective tissue, in patients with infertility</article-title><trans-title-group xml:lang="ru"><trans-title>Полиморфизм генов, влияющих на ремоделирование соединительной ткани, у пациенток с бесплодием</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1443-8671</contrib-id><name-alternatives><name xml:lang="en"><surname>Filipenkova</surname><given-names>Tat’yana E.</given-names></name><name xml:lang="ru"><surname>Филипенкова</surname><given-names>Татьяна Евгеньевна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Center of Family Planning and Reproduction of the Moscow Department of Health</p></bio><bio xml:lang="ru"><p>врач ультразвуковой диагностики, ГБУЗ «Центр планирования семьи и репродукции ДЗМ»</p></bio><email>arvensa@list.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2681-4777</contrib-id><name-alternatives><name xml:lang="en"><surname>Shcherbakova</surname><given-names>Liya N.</given-names></name><name xml:lang="ru"><surname>Щербакова</surname><given-names>Лия Ниязовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Ph.D.</p></bio><bio xml:lang="ru"><p>к.м.н., доцент</p></bio><email>liya.fbm@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6694-2231</contrib-id><name-alternatives><name xml:lang="en"><surname>Balatskiy</surname><given-names>Aleksandr V.</given-names></name><name xml:lang="ru"><surname>Балацкий</surname><given-names>Александр Владимирович</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Ph.D.</p></bio><bio xml:lang="ru"><p>к.м.н., доцент</p></bio><email>balatsky@fbm.msu.ru</email><xref ref-type="aff" rid="aff2"/><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-6734-3989</contrib-id><name-alternatives><name xml:lang="en"><surname>Samokhodskaya</surname><given-names>Larisa M.</given-names></name><name xml:lang="ru"><surname>Самоходская</surname><given-names>Лариса Михайловна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Ph.D.</p></bio><bio xml:lang="ru"><p>к.м.н., доцент</p></bio><email>slm61@mail.ru</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1910-6940</contrib-id><name-alternatives><name xml:lang="en"><surname>Alekseyenkova</surname><given-names>Mariya V.</given-names></name><name xml:lang="ru"><surname>Алексеенкова</surname><given-names>Мария Владимировна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Ph.D.</p></bio><bio xml:lang="ru"><p>к.м.н.</p></bio><email>m.alexeenkova@gmail.com</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1397-6208</contrib-id><name-alternatives><name xml:lang="en"><surname>Panina</surname><given-names>Ol’ga B.</given-names></name><name xml:lang="ru"><surname>Панина</surname><given-names>Ольга Борисовна</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>MD, Ph.D., Professor</p></bio><bio xml:lang="ru"><p>д.м.н., профессор</p></bio><email>olgapanina@yandex.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Center of Family Planning and Reproduction of the Moscow Department of Health</institution></aff><aff><institution xml:lang="ru">ГБУЗ «Центр планирования семьи и репродукции Департамента здравоохранения г. Москвы»</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Lomonosov Moscow State University</institution></aff><aff><institution xml:lang="ru">ФГБОУ ВО «Московский государственный университет им. М.В. Ломоносова»</institution></aff></aff-alternatives><aff-alternatives id="aff3"><aff><institution xml:lang="en">National Medical Research Center of Cardiology</institution></aff><aff><institution xml:lang="ru">ФГБУ «Национальный медицинский исследовательский центр кардиологии»</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2020-09-23" publication-format="electronic"><day>23</day><month>09</month><year>2020</year></pub-date><volume>7</volume><issue>3</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>158</fpage><lpage>164</lpage><history><date date-type="received" iso-8601-date="2020-09-22"><day>22</day><month>09</month><year>2020</year></date><date date-type="accepted" iso-8601-date="2020-09-22"><day>22</day><month>09</month><year>2020</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2020, Eco-Vector</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2020, ООО "Эко-Вектор"</copyright-statement><copyright-year>2020</copyright-year><copyright-holder xml:lang="en">Eco-Vector</copyright-holder><copyright-holder xml:lang="ru">ООО "Эко-Вектор"</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://archivog.com/2313-8726/article/view/44844">https://archivog.com/2313-8726/article/view/44844</self-uri><abstract xml:lang="en"><p><italic>The aim of the study was to evaluate the association of gene polymorphism of matrix metalloproteinase 2 (MMP2), MMP3, MMP9, urokinase plasminogen activator (PLAU) and transforming growth factor </italic><italic>β</italic><italic>1 (TGF-</italic><italic>β</italic><italic>1) with the occurrence of infertility.</italic></p> <p><bold><italic>Material and methods.</italic></bold><italic> 84 women planning pregnancy were examined. Of these, 47 did not become pregnant in six months (the first group), 37 had a pregnancy, and lasted more than 22 weeks (second group). The single-nucleotide polymorphisms (SNPs) of rs2285052 and rs243865 of the MMP2 gene, rs3025058 of the MMP3 gene, rs17576 and rs3918242 of the MMP9 gene, rs4065 and rs2227564 of the PLAU gene, rs1800469 of the TGF gene were analyzed in all patients. Statistical analysis of genetic associations was carried out using the SNPStats program.</italic></p> <p><bold><italic>Results.</italic></bold><italic> Patients with the A allele rs2285052 and the T allele rs243865 of the MMP2 gene had an increased risk of infertility (for rs2285052 in the group of patients without pregnancy, </italic><italic>СС</italic><italic> 27.7%, A</italic><italic>С</italic><italic> 51.1%, AA 21.3%; in the pregnant group </italic><italic>СС</italic><italic> 54%, A</italic><italic>С</italic><italic> 40.5%, AA 5.4%; for rs 243865 in the group of patients without pregnancy </italic><italic>СС</italic><italic> 57.5%, CT 40.4%, TT 2.1%; in the pregnant group </italic><italic>СС</italic><italic> 81.1%, CT 18, 9%, TT 0%). With the log-additive variant of inheritance, the OR (95% CI) was 0.38 (0.19–0.77) (p = 0.0043) for rs2285052 and 0.32 (0.12–0.84) (p = 0.015) for rs243865.</italic></p> <p><italic>No statistically significant differences were found between the main group and the comparison group in allele frequencies rs3025058 of the MMP3 gene, rs17576 and rs3918242 of the MMP9 gene, rs4065 and rs2227564 of the PLAU gene, rs1800469 of the TGF-</italic><italic>β</italic><italic>1 gene.</italic></p> <p><bold><italic>Conclusions.</italic></bold><italic> In the studied sample of patients SNPs rs2285052 and rs243865 of the MMP2 gene were associated with a risk of infertility: the presence of the A allele rs2285052 and the T allele rs243865 of the MMP2 gene were associated with an increased risk of infertility.</italic></p></abstract><trans-abstract xml:lang="ru"><p><italic>Цель исследования — оценка ассоциации полиморфизма генов матриксной металлопротеиназы 2 (MMP2), MMP3, MMP9, урокиназного активатора плазминогена (PLAU) и трансформирующего фактора роста β1 (TGF-β1) с возникновением бесплодия.</italic></p> <p><bold><italic>Материал и методы. </italic></bold><italic>Обследованы 84 женщины, планирующие беременность. У 47 из них через полгода беременность не наступила (1-я группа), у 37 беременность наступила и продолжалась более 22 нед (2-я группа). У всех пациенток проводили анализ наличия однонуклеотидных полиморфизмов (SNP) rs2285052 и rs243865 гена MMP2, rs3025058 гена MMP3, rs17576 и rs3918242 гена MMP9, rs4065 и rs2227564 гена PLAU, rs1800469 гена TGF-β1. Статистический анализ генетических ассоциаций выполняли с использованием программы SNPStats.</italic></p> <p><bold><italic>Результаты. </italic></bold><italic>Пациентки с наличием аллели А rs2285052 и аллели Т rs243865 гена MMP2 имели повышенный риск бесплодия (для rs2285052 в группе пациенток без наступления беременности частота генотипов СС 27,7%, АС 51,1%, АА 21,3%; в группе беременных — СС 54%, АС 40,5%, АА 5,4%; для rs243865 в группе пациенток без наступления беременности частота генотипов СС 57,5%, СТ 40,4%, ТТ 2,1%; в группе беременных — СС 81,1%, СТ 18,9%, ТТ 0%). При лог-аддитивном варианте наследования ОШ (95% ДИ) составило 0,38 (0,19–0,77) (р = 0,0043) для rs2285052 и 0,32 (0,12–0,84) (р = 0,015) для rs243865.</italic></p> <p><italic>Не выявлено статистически значимых различий между основной группой и группой сравнения по частоте аллелей rs3025058 гена MMP3, rs17576 и rs3918242 гена MMP9, rs4065 и rs2227564 гена PLAU, rs1800469 гена TGF-β1.</italic></p> <p><bold><italic>Заключение. </italic></bold><italic>В исследуемой выборке пациенток с риском бесплодия были ассоциированы SNP rs2285052 и rs243865 гена MMP2: наличие аллели А rs2285052 и аллели Т rs243865 гена MMP2 связано с повышенным риском бесплодия.</italic></p></trans-abstract><kwd-group xml:lang="en"><kwd>infertility</kwd><kwd>single nucleotide allelic polymorphism</kwd><kwd>matrix metalloproteinase</kwd><kwd>urokinase plasminogen activator</kwd><kwd>transforming growth factor β1</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>бесплодие</kwd><kwd>однонуклеотидный аллельный полиморфизм</kwd><kwd>матриксная металлопротеиназа</kwd><kwd>урокиназный активатор плазминогена</kwd><kwd>трансформирующий фактор роста β1</kwd></kwd-group><funding-group><funding-statement xml:lang="en">Moscow State University M.V. Lomonosov</funding-statement><funding-statement xml:lang="ru">Московский государственный университет им. М.В. Ломоносова</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Collins J.A., Van Steirteghem A. Overall prognosis with current treatment of infertility. Hum. Reprod. Update. 2004;10(4):309-16.</mixed-citation></ref><ref id="B2"><label>2.</label><citation-alternatives><mixed-citation xml:lang="en">Belokurova M.V., Samokhodskaya L.M., Kramarenko M.P., Sadekоva O.N., Panina O.B., Savel’yeva G.M. et al. Allele gene polimorphism of angiogenesis factors at patients with repeated IVF failure. Vestnik RUDN. 2012;5:62-6. (In Russ.)</mixed-citation><mixed-citation xml:lang="ru">Белокурова М.В., Самоходская Л.М., Крамаренко М.П., Садекова О.Н., Панина О.Б., Савельева Г.М. и др. Аллельный полиморфизм генов ангиогенных факторов у пациенток с неудачными попытками экстракорпорального оплодотворения. Вестник РУДН. 2012;5:62-6</mixed-citation></citation-alternatives></ref><ref id="B3"><label>3.</label><mixed-citation>Abdul-Muneer P.M., Pfister B.J., Haorah J., Chandra N. Role of matrix metalloproteinases in the pathogenesis of traumatic brain injury. Mol. Neurobiol. 2016;53:6106-23.</mixed-citation></ref><ref id="B4"><label>4.</label><mixed-citation>Sakowicz A., Lisowska M., Biesiada L., Rybak-Krzyszkowska M., Gach A., Sakowicz B., et al. Association of maternal and fetal single-nucleotide polymorphisms in metalloproteinase (MMP1, MMP2, MMP3, and MMP9) genes with preeclampsia. Dis. Markers. 2018; 2018:1371425.</mixed-citation></ref><ref id="B5"><label>5.</label><mixed-citation>Huang X., Ye Q., Zhang Z., Huang X., Zhu Z., Chen Y., et al. Association of matrix metalloproteinase-3 gene 5A/6A polymorphism with the recurrence of ischemic stroke: A prospective observational study. Brain Res. 2017;1674:55-61.</mixed-citation></ref><ref id="B6"><label>6.</label><citation-alternatives><mixed-citation xml:lang="en">Yarmolinskaya M.I., Molotkov A.S., Bezhenar’ V.F., Shved N.Yu., Ivashchenko T.E., Baranov V.S. Association of matrix metalloproteinases' polymorphisms of MMP3 and MMP9 with development of genital endometriosis. Genetika. 2014;50(2):230-5. (In Russ.)</mixed-citation><mixed-citation xml:lang="ru">Ярмолинская М.И., Молотков А.С., Беженарь В.Ф., Швед Н.Ю., Иващенко Т.Э., Баранов В.С. Ассоциация полиморфизма генов матриксных металлопротеиназ MMP3 и MMP9 с развитием генитального эндометриоза. Генетика. 2014;50(2):230-5.</mixed-citation></citation-alternatives></ref><ref id="B7"><label>7.</label><mixed-citation>Li L., Liu J., Qin S., Li R. The association of polymorphisms in promoter region of MMP2 and MMP9 with recurrent spontaneous abortion risk in Chinese population. Medicine (Baltimore). 2018;97(40): e12561.</mixed-citation></ref><ref id="B8"><label>8.</label><citation-alternatives><mixed-citation xml:lang="en">Parfenova E.V., Plekhanova O.S., Men’shikov M.Y., Stepanova V.V., Tkachuk V.A. Regulation of growth and remodeling of blood vessels: the unique role of urokinase. Rossiyskiy Fiziologicheskiy Zhurnal imeni I.M. Sechenova. 2009;95(5):442-64. (In Russ.)</mixed-citation><mixed-citation xml:lang="ru">Парфенова Е.В., Плеханова О.С., Меньшиков М.Ю., Степанова M.В., Ткачук В.А. Регуляция роста и ремоделирования кровеносных сосудов: уникальная роль урокиназы. Российский физиологический журнал им. И.М. Сеченова. 2009;95(5):442-64.</mixed-citation></citation-alternatives></ref><ref id="B9"><label>9.</label><mixed-citation>Katsuda S., Okada Y., Okada Y., Imai K., Nakanishi I. Matrix metalloproteinase-9 (92-kd gelatinase/type IV collagenase equals gelatinase B) can degrade arterial elastin. Am. J. Pathol. 1994;145(5):1208-18.</mixed-citation></ref><ref id="B10"><label>10.</label><mixed-citation>Xu J., Li W., Bao X., Ding H., Chen J., Zhang W. et al. Association of putative functional variants in the PLAU gene and the PLAUR gene with myocardial infarction. Clin. Sci. (Lond). 2010;119(8):353-9.</mixed-citation></ref><ref id="B11"><label>11.</label><mixed-citation>Duran J., Sánchez-Olavarría P., Mola M., Götzens V., Carballo J., Martín-Pelegrina E. et al. The PLAU P141L single nucleotide polymorphism is associated with collateral circulation in patients with coronary artery disease. Rev. Esp. Cardiol. (Engl. Ed). 2014;67(7): 552-7.</mixed-citation></ref><ref id="B12"><label>12.</label><mixed-citation>Zhong F., Yang X.C., Bu L.X., Li N.Y., Chen W.T. Single nucleotide polymorphisms in the u-PA gene are related to susceptibility to oral tongue squamous cell carcinoma in the northern Chinese Han population. Asian Pac. J. Cancer Prev. 2013;14:781-4.</mixed-citation></ref><ref id="B13"><label>13.</label><mixed-citation>Bowen J.M., Chamley L., Mitchell M.D., Keelan J.A. Cytokines of the placenta and extra-placental membranes: biosynthesis, secretion and roles in establishment of pregnancy in women. Placenta. 2002; 23:239-56.</mixed-citation></ref><ref id="B14"><label>14.</label><mixed-citation>Bischof P., Meisser A., Campana A. Mechanisms of endometrial control of trophoblast invasion. J. Reprod. Fertil. Suppl. 2000;55:65-71.</mixed-citation></ref><ref id="B15"><label>15.</label><mixed-citation>Du L., Gong T., Yao M., Dai H., Ren H.G., Wang H. Contribution of the polymorphism rs1800469 of transforming growth factor β in the development of myocardial infarction: meta-analysis of 5460 cases and 8413 controls (MOOSE-compliant article). Medicine (Baltimore). 2019;98(26):e15946.</mixed-citation></ref><ref id="B16"><label>16.</label><mixed-citation>Chen J., Tan W., Wang D., Zhao L., Gao H., Zhang N., Wang C. Association of Foxp3 and TGF-β1 polymorphisms with pre-eclampsia risk in Chinese women. Genet. Test Mol. Biomarkers. 2019; 23(3):180-7.</mixed-citation></ref><ref id="B17"><label>17.</label><mixed-citation>Yang L., Wang Y.J., Zheng L.Y., Jia Y.M., Chen Y.L., Chen L. et al. Genetic Polymorphisms of TGFB1, TGFBR1, SNAI1 and TWIST1 are associated with endometrial cancer susceptibility in Chinese Han women. PLoS One. 2016;11(5):e0155270.</mixed-citation></ref><ref id="B18"><label>18.</label><citation-alternatives><mixed-citation xml:lang="en">Agarkova T.A., Kublinskiy K.S., Men’shikova N.S., Naslednikova I.O., Evtushenko I.D., Agarkova L.A. et al. Polymorphism of the cytokines genes in endometriosis associated infertility. Fundamental’nyye issledovaniya. 2012;8(2):265-70. (In Russ.)</mixed-citation><mixed-citation xml:lang="ru">Агаркова Т.А., Кублинский К.С., Меньшикова Н.С., Наследникова И.О., Евтушенко И.Д., Агаркова Л.А. и др. Полиморфизм генов цитокинов при бесплодии, ассоциированном с эндометриозом. Фундаментальные исследования. 2012;8(2):265-70.</mixed-citation></citation-alternatives></ref><ref id="B19"><label>19.</label><mixed-citation>Roh E.Y., Yoon J.H., Song E.Y., Kim J.J., Hwang K.R., Seo S.H., Shin S. Single nucleotide polymorphisms in the TGF-β1 gene are associated with polycystic ovary syndrome susceptibility and characteristics: a study in Korean women. J. Assist. Reprod. Genet. 2017; 34(1):139-47.</mixed-citation></ref><ref id="B20"><label>20.</label><mixed-citation>Sole X., Guino E., Valls J. Iniesta R., Moreno V. SNPStats: a web tool for the analysis of association studies. Bioinformatics. 2006; 22(15):1928-9.</mixed-citation></ref><ref id="B21"><label>21.</label><mixed-citation>Salamonsen L.A. Role of proteases in implantation. Rev. Reprod. 1999;4(1):11-22.</mixed-citation></ref><ref id="B22"><label>22.</label><mixed-citation>Jokimaa V., Oksjoki S., Kujari H., Vuorio E., Anttila L. Altered expression of genes involved in the production and degradation of endometrial extracellular matrix in patients with unexplained infertility and recurrent miscarriages. Hum. Reprod. 2004;8:1111-6.</mixed-citation></ref><ref id="B23"><label>23.</label><mixed-citation>O'Reilly M.S., Wiederschain D., Stetler-Stevenson W.G., Folkman J., Moses M.A. Regulation of angiostatin production by matrix metalloproteinase-2 in a model of concomitant resistance. J. Biol. Chem. 1999;274(41):29568-71.</mixed-citation></ref><ref id="B24"><label>24.</label><mixed-citation>Fernandez-Patron C., Martinez-Cuesta M.A., Salas E., Sawicki G., Wozniak M., Radomski M.W. et al. Differential regulation of platelet aggregation by matrix metalloproteinase-9 and -2. Thromb. Haemost. 1999;82:1730-5.</mixed-citation></ref><ref id="B25"><label>25.</label><mixed-citation>Parks W.C., Wilson C.L., Lopez-Boado Y.S. Matrix metalloproteinases as modulators of inflammation and innate immunity. Nat. Rev. Immunol. 2004;4:617-29.</mixed-citation></ref><ref id="B26"><label>26.</label><mixed-citation>Hulboy D.L., Rudolph L.A., Matrisian L.M. Matrix metalloproteinases as mediators of reproductive function. Mol. Hum. Reprod. 1997; 3:27-45.</mixed-citation></ref><ref id="B27"><label>27.</label><mixed-citation>Price S.J., Greaves D.R., Watkins H. Identification of novel, functional genetic variants in the human matrix metalloproteinase-2 gene: role of Sp1 in allele-specific transcriptional regulation. J. Biol. Chem. 2001;276(10):7549-58.</mixed-citation></ref><ref id="B28"><label>28.</label><mixed-citation>Borghese B., Chiche J.D., Vernerey D., Chenot C., Mir O., Bijaoui G. et al. Genetic polymorphisms of matrix metalloproteinase 12 and 13 genes are implicated in endometriosis progression. Hum. Reprod. 2008;23(5):1207-13.</mixed-citation></ref><ref id="B29"><label>29.</label><mixed-citation>Xu E., Xia X., Lu B., Xing X., Huang Q., Ma Y. et al. Association of matrix metalloproteinase-2 and -9 promoter polymorphisms with colorectal cancer in Chinese. Mol. Carcinog. 2007;46(11):924-9.</mixed-citation></ref></ref-list></back></article>
