1.Assessment of antioxidant capacity and phenolic content of selected commercial beverages.
Abbe Maleyki Mhd Jalil ; Azrina Azlan ; Amin Ismail
Malaysian Journal of Nutrition 2007;13(2):149-159
This study was aimed at assessing the antioxidant capacity and phenolic (free, bound, and total) contents in selected commercial beverages. Three different types of beverages commonly available in Malaysian supermarkets namely, cocoa, coffee and tea were selected. Phenolic contents were determined using a Folin-Ciocalteu assay. Antioxidant capacity (ferric reducing power and scavenging activity) was determined using FRAP and TEAC assays. Based on analysis of variance, coffee showed the highest amount of free phenolic compounds and antioxidant capacity compared to cocoa and tea (p < 0.05). The major phenolic compound detected in coffee was chlorogenic acid. Cocoa showed higher phenolic content than tea. However, cocoa and tea have similar catechin content and possessed comparable antioxidant capacity. The free phenolic content in the three beverages was found to be highly correlated with antioxidant capacity. In addition, moderate correlation was observed between total phenolic content and antioxidant capacity. On the other hand, there was no significant contribution of bound phenolic compounds towards antioxidant capacity. The contribution of antioxidant capacity in these beverages could be due to phenolic compounds in the free form. The study indicated that the beverages studied possessed varying degrees of antioxidant capacity and phenolic contents.
Antioxidants
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Tea
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commercial
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Coffee
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Assessment: Cognition
2.Antihyperglycemic and Glucose Tolerance Activity of Ficus deltoidea Ethanolic Extract in Diabetic Rats
Zainah Adam ; Muhajir Hamid ; Amin Ismail ; Shafii Khamis ; Norazizah Marsidi
Malaysian Journal of Health Sciences 2010;8(1):25-30
Ficus deltoidea or Mas cotek is one of the common medicinal plants used in Malaysia has been claimed to have
antidiabetic activity. However, scientific evidence to confirm its efficacy is still lacking. Thus, the present study was undertaken to evaluate the potential of ethanolic extract of Ficus deltoidea to reduce hyperglycaemia in streptozotocininduced
diabetic rats at different prandial state. The results showed that, ethanolic extract of Ficus deltoidea significantly reduced fasting and postprandial hyperglycemia particularly after 4 and 6 hours of extract administration. Likewise, glucose tolerance activity was significantly improved in the presence of Ficus deltoidea ethanolic extract at a low dose, 100 mg/kg. It is suggested that ethanolic extract of Ficus deltoidea at particular doses, possess fasting and postprandial
antihyperglycemic activity as well as glucose tolerance activity in streptozotocin-induced diabetic rats.
3.Antihyperglycemic Activity of Oil Palm Elaeis guineensis Fruit Extract on Streptozotocin-induced Diabetic Rats
Faez Sharif ; Muhajir Hamid ; Amin Ismail ; Zainah Adam
Malaysian Journal of Health Sciences 2015;13(2):36-43
Hypoglycaemic and antihyperglycemic activity of oil palm Elaeis guineensis fruit extract on normal and Streptozotocin-induced diabetic rats was studied. The oil palm fruit extract (OPF) were administered orally at different concentrations (100, 200 and 500 mg kg-1 b.w.) in fasting and post-prandial rats. Hypoglycaemia was not observed in the group of normal rats treated with OPF. In fasting rats, OPF (500 mg kg-1 b.w.) has caused the blood glucose level (BGL) to reduce significantly. For post-prandial diabetic rats, the antihyperglycemic activity was observed after OPF treatment at concentrations 200 and 500 mg kg-1. Chronic OPF treatments (for 28 days) had increased the diabetic rat’s body weight and reduced BGL as well as improved plasma insulin secretion. The result of this study suggests E. guineensis palm fruit extract show evidence of antihyperglycemic properties from the reduction of the BGL in diabetic rats.
Hypoglycemic Agents
4.Changes in Nitrate and Nitrite Levels of Blanched Amaranthus During Refrigeration Storage
Chew SC ; Amin Ismail ; Nagendra Prasad Yang Bao
Malaysian Journal of Health Sciences 2011;9(1):29-34
Changes in nitrate and nitrite contents (leaves and stem) of Amaranthus gangeticus (AG) and Amaranthus paniculatus
(AP), resulting from blanching, storage time (0-4 days), storage temperature (0 and 4ºC), and reheating were analysed.
Results showed that fresh AG (1859 ± 7.07 mg/kg) had higher nitrite content than AP (1262 ± 2.12 mg/kg). Nitrites
content was 506 ± 2 and 825 ± 3.5 mg/kg for AG and AP, respectively. Reheating and storage times significantly
increased the conversion of nitrate to nitrite in AG and AP. Storage at 0 and 4oC exhibited a significant change (P <
0.05) in nitrate and nitrite contents for both samples. Higher nitrite content was found in AP when stored at 4oC and
0oC. The present study indicated that storage time and temperature affected the nitrite contents in blanched AG and AP
when stored in low temperatures. Apart from that reheating was also found to increase the formation of nitrite.
5.Protective Effects of Defatted Dabai Peel Extracts in Hypercholesterolemic Rabbits Based on Histopathological Methods
Hock Eng Khoo ; Azrina Azlan ; Amin Ismail ; Sadek Hassan Al-Sheraji
Malaysian Journal of Medicine and Health Sciences 2015;11(2):59-68
Defatted dabai peel contains a high amount of anthocyanin. Anthocyanins are known to prevent several
types of disease, including cardiovascular-related complications. This study aimed to describe the
effects of different doses of defatted dabai peel extract by histopathological analyses on lesions in the
liver, kidney, heart and aorta. Histopathology methods were applied to determine the protective effects
of defatted dabai peel extracts against hypercholesterolemia-induced oxidative damages to animal
organs. Haematoxylin and eosin staining was applied for histopathology examination for liver, kidney,
heart and aorta. Data showed that a high dose of defatted dabai extract (3000 mg per day) applied to
hypercholesterolemic rabbits for eight weeks had mild protective effect, especially reducing the severity
of hepatic fibrosis and steatosis of the renal medulla. The high dose of extract supplementation also
reduced inflammation of aorta and formation of atherosclerosis plaque in the cell wall of right ventricle
of the heart. The high dose of defatted dabai peel extract could be a protective agent against oxidative
stress.
Anthocyanins
6.Comparative Analysis of Inflammatory Markers Produced by Macrophages Inoculated with Invasive and Colonizing Strains of Streptococcus Agalactiae (Group B Streptococcus) and Evaluation of Patients’ Clinical Data
Nassim Karimi Hosseini ; Sharmili Vidyadaran ; Shinsmon Jose ; Narges Eskandarian ; Zalina Ismail ; Syafinaz Amin Nordin
Malaysian Journal of Medicine and Health Sciences 2017;13(1):55-60
Introduction: Group B Streptococcus (GBS), infection and recurrence in newborns and pregnant women can lead to
chronic medical illness resulting in significant morbidity, and mortality. Pathogenesis of GBS may be due to reasons
such as activation of the immune system, followed by the production of inflammatory markers and toxic components
by immune cells including macrophages. Methods: The studies on invasive and colonizing GBS strains inoculated
either with peripheral or brain macrophages, the expression of nitric oxide (NO), cell viability, and CD40 were
also measured by Griess assay, methyl tetrazolium assay (MTT), and flow cytometry, respectively. Furthermore, the
clinical manifestations of the selected patients were also assessed for this study. Results: Outcome of inflammatory
markers studies, after GBS inoculation indicated that, invasive GBS strains induced higher inflammatory markers
in comparison to colonizing GBS strains. Furthermore, patients’ clinical data showed that patients with invasive
GBS infections had severe condition unlike among patients with colonizing GBS strains. The fatality rate in patients
with invasive GBS strain were 30.8% while there was no death among carriers. Conclusion: This study, aimed to
understand the immune response to GBS, and strengthen the knowledge on GBS pathogenesis. It was concluded
that invasive GBS strains not only showed higher expression of inflammatory markers on immune cells but also had
higher pathogenesis effect in comparison to colonizing GBS strains.
Streptococcus agalactiae
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Pregnancy
7.Evaluation of Selected Metal Elements in Commercial Drinking Water and Tap Water in Peninsular Malaysia
Hock-Eng Khoo ; Azrina Azlan ; Mohd Aizat Idris ; Amin Ismail ; Muhammad Rizal Razman
Malaysian Journal of Health Sciences 2011;9(1):5-11
The present study was carried out to determine the concentrations of selected metal elements (lead, copper, manganese, zinc and iron) in 51 samples of commercial drinking water and tap water available in Malaysia. The results indicated that low metal elements were found in the studied water samples. Lead, manganese, zinc and iron were not detected in some of the studied samples, except copper. The concentrations of the metal elements in the studied samples were well below the maximum permitted concentrations as recommended. Therefore these drinking water are safe for consumption and do not pose adverse effect to the health of consumers due to metal toxicity.
8.Damage control resuscitation: A case of thoraco abdominal impalement
Nur Abdul Karim ; Mohd Amin Mohd Mokhtar ; Izzat Ismail ; Abdul Halim S ; Nor Elayni Borhan
The Medical Journal of Malaysia 2016;71(2):77-78
Damage Control Resuscitation and Surgery is the concept of
controlled hypotension, haemostatic resuscitation and
abbreviated surgical procedures following severe trauma;
the practice of which has resulted in improved mortality and
morbidity. We describe a rare case of thoraco-abdominal
impalement successfully managed based on the concept of
Damage Control Resuscitation.
Hypotension
9.Antioxidant capacity and phenolic content of selected commercially available cruciferous vegetables.
Lee Wee Yee ; Emmy Hainida Khairul Ikram ; Abbe Maleyki Mhd Jalil ; Amin Ismail
Malaysian Journal of Nutrition 2007;13(1):71-80
Antioxidant activity, free radical scavenging activity and phenolic content of red cabbage (Brassica oleracea var. capitata rubra), Chinese cabbage (Brassica rapa pekinensis var cylindrica), green cabbage (Brassica oleracea var capitata), mustard cabbage (Brassica juncea var rugosa) and Chinese white cabbage (Brassica rapa var chinensis), grown in Malaysia, were evaluated. Red cabbage had the highest antioxidant activity and phenolic content compared to the other cruciferous vegetables studied (p < 0.05). The contributions of all cruciferous vegetables to the antioxidant activity was >79%. The radical scavenging activity was in the order of Chinese white cabbage > red cabbage > mustard cabbage > Chinese cabbage > green cabbage. There was a significant difference (p < 0.05) in the means of scavenging activity observed between cabbage, Chinese cabbage and Chinese mustard. Phenolic content was significantly different (p < 0.05) among all the cruciferous vegetables studied, and was in the order of red cabbage > Chinese white cabbage > green cabbage > Chinese cabbage >mustard cabbage. The study indicated that red cabbage possessed the highest antioxidant capacity and phenolic compounds concentration among all the cruciferous vegetables studied.
Cabbage
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cruciferous vegetables
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Chinese cabbage
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Red color
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Chinese People
10.Retention of BioAggregate and MTA as coronal plugs after intracanal medication for regenerative endodontic procedures: an ex vivo study.
Suzan Abdul Wanees AMIN ; Shaimaa Ismail GAWDAT
Restorative Dentistry & Endodontics 2018;43(3):e18-
OBJECTIVES: This study compared the retention of BioAggregate (BA; Innovative BioCeramix) and mineral trioxide aggregate (MTA; Angelus) as coronal plugs after applying different intracanal medications (ICMs) used in regenerative endodontics. MATERIALS AND METHODS: One-hundred human maxillary central incisors were used. The canals were enlarged to a diameter of 1.7 mm. Specimens were divided into 5 groups (n = 20) according to the ICM used: calcium hydroxide (CH), 2% chlorhexidine (CHX), triple-antibiotic paste (TAP), double-antibiotic paste (DAP), and no ICM (control; CON). After 3 weeks of application, ICMs were removed and BA or MTA were placed as the plug material (n = 10). The push-out bond strength and the mode of failure were assessed. The data were analyzed using 2-way analysis of variance, the Tukey's test, and the χ2 test; p values < 0.05 indicated statistical significance. RESULTS: The type of ICM and the type of plug material significantly affected bond strength (p < 0.01). Regardless of the type of ICM, BA showed a lower bond strength than MTA (p < 0.05). For MTA, CH showed a higher bond strength than CON, TAP and DAP; CHX showed a higher bond strength than DAP (p < 0.01). For BA, CH showed a higher bond strength than DAP (p < 0.05). The mode of failure was predominantly cohesive for BA (p < 0.05). CONCLUSIONS: MTA may show better retention than BA. The mode of bond failure with BA can be predominantly cohesive. BA retention may be less affected by ICM type than MTA retention.
Calcium Hydroxide
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Chlorhexidine
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Ciprofloxacin
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Endodontics
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Humans
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Incisor
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Metronidazole
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Miners
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Pemetrexed*