<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">A Ismail</style></author><author><style face="normal" font="default" size="100%">TAFT Anuar</style></author><author><style face="normal" font="default" size="100%">IFM Suffian</style></author><author><style face="normal" font="default" size="100%">AA Abdul Hamid</style></author><author><style face="normal" font="default" size="100%">MN Omar</style></author><author><style face="normal" font="default" size="100%">BE Mustafa</style></author><author><style face="normal" font="default" size="100%">WAN Wan Ahmad</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Angiotensin Converting Enzyme (ACE) Inhibition Activity by Syzygium polyanthum Wight (Walp.) Leaves: Mechanism and Specificity</style></title><secondary-title><style face="normal" font="default" size="100%">Pharmacognosy Journal</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2022</style></year><pub-dates><date><style  face="normal" font="default" size="100%">February 2022</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">14</style></volume><pages><style face="normal" font="default" size="100%">76-84</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Introduction:&lt;/strong&gt; One of the potential antihypertensive mechanisms include angiotensin converting enzyme (ACE) inhibition. So far, there is no in-depth study on the ACE inhibition activity of &lt;em&gt;S. polyanthum&lt;/em&gt;, an ethnomedicinal plant used in treating hypertension. Thus, we aimed to study the ACE inhibition activity of&lt;em&gt; S. polyanthum&lt;/em&gt; leaves by evaluating its potency, mechanism, and specificity.&lt;strong&gt; Methods: &lt;/strong&gt;&lt;em&gt;S. polyanthum&lt;/em&gt; leaves were macerated in a bath-sonicator with either water, methanol, ethyl acetate, and hexane producing aqueous (ASP), methanolic (MSP), ethyl acetate (EASP) and hexane (HSP) extracts. Each extract (100 μg/mL) were initially screened for ACE inhibition activity and then compared with standard drug, captopril (2.06 ng/mL), then the most active extract was further tested at 1 to 1000μg/ml. Inhibition mechanism was studied using zinc chloride and bovine serum albumin (BSA), while inhibition specificity was determined upon screening for α-chymotrypsin and trypsin inhibition activity. &lt;strong&gt;Results:&lt;/strong&gt; ASP at 100 μg/ mL exhibited the highest inhibition activity (69.43 ± 0.60 %) compared to MSP (41.63 ± 0.15 %), EASP (9.62 ± 1.60 %), and HSP (45.40 ± 0.15 %). ASP showed dose-dependent ACE inhibition activity with IC&lt;sub&gt;50&lt;/sub&gt; of 41 μg/mL. ASP’s ACE inhibition activity was significantly reduced in the presence of BSA, but not upon the presence of zinc chloride. ASP did not significantly inhibit α-chymotrypsin and trypsin. &lt;strong&gt;Conclusion:&lt;/strong&gt; This study showed that the enzyme inhibition activity by&lt;em&gt; S. polyanthum &lt;/em&gt;leaves was specific towards ACE. The ACE inhibition possibly occurs via protein precipitation and was non-dependent to the chelation with zinc at ACE active site.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Key words: &lt;/strong&gt;Antihypertensive, ACE, Angiotensin converting enzyme, Hypertension, Syzygium polyanthum&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">1</style></issue><work-type><style face="normal" font="default" size="100%">Original Article</style></work-type><section><style face="normal" font="default" size="100%">76</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;A Ismail&lt;sup&gt;1,*&lt;/sup&gt;, TAFT Anuar&lt;sup&gt;2&lt;/sup&gt;, IFM Suffian&lt;sup&gt;3&lt;/sup&gt;, AA Abdul Hamid&lt;sup&gt;4&lt;/sup&gt;, MN Omar&lt;sup&gt;4&lt;/sup&gt;, BE Mustafa&lt;sup&gt;1&lt;/sup&gt;, WAN Wan Ahmad&lt;sup&gt;5&lt;/sup&gt;&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Department of Fundamental Dental and Medical Sciences, Kulliyah of Dentistry, International Islamic University Malaysia, 25200 Kuantan, Pahang, MALAYSIA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Department of Chemistry, Kulliyyah of Science, International Islamic University Malaysia, 25200 Kuantan, Pahang, MALAYSIA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;3&lt;/sup&gt;Department of Pharmaceutical Chemistry, Kulliyyah of Pharmacy, International Islamic University Malaysia, 25200 Kuantan, Pahang, MALAYSIA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;4&lt;/sup&gt;Department of Biotechnology, Kulliyyah of Science, International Islamic University Malaysia, 25200 Kuantan, Pahang, MALAYSIA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;5&lt;/sup&gt;Biomedicine Programme, School of Health Sciences, Universiti Sains Malaysia, Health Campus, 16150 Kubang Kerian, Kelantan, MALAYSIA.&lt;/p&gt;
</style></auth-address></record><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">KA Radzun</style></author><author><style face="normal" font="default" size="100%">MHH Rusmidi</style></author><author><style face="normal" font="default" size="100%">Aini</style></author><author><style face="normal" font="default" size="100%">I Norisam</style></author><author><style face="normal" font="default" size="100%">N Iran</style></author><author><style face="normal" font="default" size="100%">F Pardi</style></author><author><style face="normal" font="default" size="100%">A Ismail</style></author><author><style face="normal" font="default" size="100%">WRWA Razak</style></author><author><style face="normal" font="default" size="100%">SRA Hafid</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Anti-inflammatory Effects of Astaxanthin Extracted from Microalgae Hematococcus pluvialis and Combinations with Palm Tocotrienol Rich-Fraction in RAW 264.7 Macrophages</style></title><secondary-title><style face="normal" font="default" size="100%">Pharmacognosy Journal</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2022</style></year><pub-dates><date><style  face="normal" font="default" size="100%">February 2022</style></date></pub-dates></dates><volume><style face="normal" font="default" size="100%">14</style></volume><pages><style face="normal" font="default" size="100%">205-215</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;Astaxanthin and tocotrienols, known as antioxidants derived from natural compounds and shown to have anti-inflammatory properties. This study aims to investigate the effects of a combination of astaxanthin extracted from&lt;em&gt; Hematococcus pluvialis&lt;/em&gt; microalga and palm tocotrienols rich-fraction (TRF) on inflammatory reaction in lipopolysaccharide (LPS)-stimulated mouse RAW 264.7 macrophages cells. MTT assay was used to test cell viability and nitrite oxide (NO) was determined using Griess assay. Isobologram confirmed that the combined treatment produced synergistic effect and measurement of inflammatory cytokines such as interleukin 6 (IL-6) and interleukin 12 (IL-12) through ELISA assay. Our results showed that the combination of astaxanthin and TRF exhibited inflammatory markers such as NO production. The concentration of astaxanthin ranging from 10 to 100 μg/mL and TRF at 4-25 μg/mL had no toxicity and achieved higher cell viability. The combination treatments led to more potent inhibition of NO production compared to single treatments. Combination Index (CI) was achieved from the combination treatments at IC80, resulting in synergism at a CI value of 0.81. Furthermore, ELISA showed that the combined treatment significantly further reduced the expression levels of pro-inflammatory cytokines IL-6 and IL-12. Our findings suggest that the combination of astaxanthin and TRF enhanced anti-inflammatory and antioxidant activities in stimulated macrophages and may act synergistically to produce health effects reducing inflammation.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;Key Words: &lt;/strong&gt;Inflammation, Tocotrienol-Rich Fraction, Astaxanthin, Antioxidant, Combination, Macrophages&lt;/p&gt;
</style></abstract><issue><style face="normal" font="default" size="100%">1</style></issue><work-type><style face="normal" font="default" size="100%">Research Article</style></work-type><section><style face="normal" font="default" size="100%">205</style></section><auth-address><style face="normal" font="default" size="100%">&lt;p class=&quot;rtejustify&quot;&gt;&lt;strong&gt;KA Radzun&lt;sup&gt;1,*&lt;/sup&gt;, MHH Rusmidi&lt;sup&gt;1&lt;/sup&gt;, MAM Aini&lt;sup&gt;2&lt;/sup&gt;, I Norisam&lt;sup&gt;2&lt;/sup&gt;, N Iran&lt;sup&gt;2&lt;/sup&gt;, F Pardi&lt;sup&gt;1,3&lt;/sup&gt;, A Ismail&lt;sup&gt;1&lt;/sup&gt;, WRWA Razak&lt;sup&gt;1&lt;/sup&gt;, SRA Hafid&lt;sup&gt;2&lt;/sup&gt;,*&lt;/strong&gt;&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;1&lt;/sup&gt;Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Selangor, MALAYSIA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;2&lt;/sup&gt;Malaysian Palm Oil Board, No.6 Persiaran Institusi, Bandar Baru Bangi, Kajang Selangor D.E, MALAYSIA.&lt;/p&gt;

&lt;p class=&quot;rtejustify&quot;&gt;&lt;sup&gt;3&lt;/sup&gt;Institute for Biodiversity and Sustainable Development, Universiti Teknologi MARA, 40450, Selangor, MALAYSIA.&lt;/p&gt;
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