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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="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Current Pharmaceutical Design</journal-id><journal-title-group><journal-title xml:lang="en">Current Pharmaceutical Design</journal-title><trans-title-group xml:lang="ru"><trans-title>Current Pharmaceutical Design</trans-title></trans-title-group></journal-title-group><issn publication-format="print">1381-6128</issn><issn publication-format="electronic">1873-4286</issn><publisher><publisher-name xml:lang="en">Bentham Science</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">645722</article-id><article-id pub-id-type="doi">10.2174/0113816128304967240328065809</article-id><article-categories><subj-group subj-group-type="toc-heading"><subject>Immunology, Inflammation &amp;amp; Allergy</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">In vitro Modified Release Studies on Melatoninergic Fluorinated Phenylalkylamides: Circumventing their Lipophilicity for Oral Administration</article-title></title-group><contrib-group><contrib contrib-type="author"><name><surname>Vlachou</surname><given-names>Marilena</given-names></name><email>info@benthamscience.net</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name><surname>Siamidi</surname><given-names>Angeliki</given-names></name><email>info@benthamscience.net</email><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name><surname>Protopapa</surname><given-names>Chrystalla</given-names></name><email>info@benthamscience.net</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name><surname>Vlachos</surname><given-names>Michalis</given-names></name><email>info@benthamscience.net</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name><surname>Kloutsou</surname><given-names>Sophia</given-names></name><email>info@benthamscience.net</email><xref ref-type="aff" rid="aff4"/></contrib><contrib contrib-type="author"><name><surname>Dreliozi</surname><given-names>Chrysoula-Christina</given-names></name><email>info@benthamscience.net</email><xref ref-type="aff" rid="aff3"/></contrib><contrib contrib-type="author"><name><surname>Papanastasiou</surname><given-names>Ioannis</given-names></name><email>info@benthamscience.net</email><xref ref-type="aff" rid="aff4"/></contrib></contrib-group><aff id="aff1"><institution>Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences,, National and Kapodistrian University of Athens</institution></aff><aff id="aff2"><institution>Section of Pharmaceutical Technology, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens</institution></aff><aff id="aff3"><institution>Section of Pharmaceutical Chemistry, Department of Pharmacy, School of Health Sciences,, National and Kapodistrian University of Athens</institution></aff><aff id="aff4"><institution>Section of Pharmaceutical Chemistry, Department of Pharmacy, School of Health Sciences, National and Kapodistrian University of Athens</institution></aff><pub-date date-type="pub" iso-8601-date="2024-05-10" publication-format="electronic"><day>10</day><month>05</month><year>2024</year></pub-date><volume>30</volume><issue>18</issue><issue-title xml:lang="ru"/><fpage>1433</fpage><lpage>1441</lpage><history><date date-type="received" iso-8601-date="2025-01-11"><day>11</day><month>01</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2024, Bentham Science Publishers</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="en">Bentham Science Publishers</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/></permissions><self-uri xlink:href="https://journals.eco-vector.com/1381-6128/article/view/645722">https://journals.eco-vector.com/1381-6128/article/view/645722</self-uri><abstract xml:lang="en"><p id="idm46466589694432">Introduction:In an attempt to circumvent the lipophilicity burden for the oral administration of new potent synthetic melatoninergic fluorine-substituted methoxyphenylalkyl amides, we conducted in vitro modified release studies using carefully selected matrix tablets biopolymeric materials in different ratios.</p><p id="idm46466589698432">Method:In particular, we sought to attain release profiles of these analogues similar to that of the parent compound, the chronobiotic hormone Melatonin (MLT), and also of the commercially available drug, Circadin®.</p><p id="idm46466589702400">Result:It was found that some of these systems, albeit being more lipophilic than MLT, mimic the in vitro release patterns of melatonin and Circadin®.</p><p id="idm46466589707456">Conclusion:Moreover, a number of these derivatives were proven suitable for dealing with sleep onset problems, whilst others for dealing with combined sleep onset/sleep maintenance dysfunctions.</p></abstract><kwd-group xml:lang="en"><kwd>Melatonin</kwd><kwd>synthetic melatoninergic analogues</kwd><kwd>lipophilicity</kwd><kwd>matrix tablets</kwd><kwd>in vitro dissolution studies</kwd><kwd>oral administration.</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Reppart SM, Weaver DR, Godson C. 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