Der Jiun Ooi

Dr. Der Jiun Ooi

MAHSA University
orcid

Research Focus & Metrics

Academic Career Length

15Years (2012-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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29 March 2022 in Cancers
Verified
Journal Article
Open access
PDF file
Md. Sanower HossainMd. Sanower Hossain
Md. Sanower Hossain
Hidayah KaruniawatiHidayah Karuniawati
Hidayah Karuniawati
AJAmmar Jairoun
Ammar Jairoun
ZUZannat Urbi
Zannat Urbi
DODer Jiun Ooi
Der Jiun Ooi
MHMuhammad Abdul Hadi
Muhammad Abdul Hadi
Colorectal cancer (CRC) is the second most deadly cancer. Global incidence and mortality are likely to be increased in the coming decades. Although the deaths associated with CRC are very high in high-income countries, the incidence and fatalities related to CRC are growing in developing countries too. CRC detected early is entirely curable by surgery and subsequent medications. However, the recurrence rate is high, and cancer drug resistance increases the treatment failure rate. Access to early diagnosis and treatment of CRC for survival is somewhat possible in developed countries. However, these facilities are rarely available in developing countries. Highlighting the current status of CRC, its development, risk factors, and management is crucial in creating public awareness. Therefore, in this review, we have comprehensively discussed the current global epidemiology, drug resistance, challenges, risk factors, and preventive and treatment strategies of CRC. Additionally, there is a brief discussion on the CRC development pathways and recommendations for preventing and treating CRC.

30 June 2022 in Frontiers in Pharmacology
Verified
Journal Article
Open access
Md. Sanower HossainMd. Sanower Hossain
Md. Sanower Hossain
AKAbdul Kader
Abdul Kader
KGKhang Wen Goh
Khang Wen Goh
MIMaidul Islam
Maidul Islam
SKSharif Khan
Sharif Khan
Long MingLong Ming
Long Ming
Colorectal cancer (CRC) is the second most deadly cancer worldwide. CRC management is challenging due to late detection, high recurrence rate, and multi-drug resistance. Herbs and spices used in cooking, practised for generations, have been shown to contain CRC protective effect or even be useful as an anti-CRC adjuvant therapy when used in high doses. Herbs and spices contain many bioactive compounds and possess many beneficial health effects. The chemopreventive properties of these herbs and spices are mainly mediated by the BCL-2, K-ras, and MMP pathways, caspase activation, the extrinsic apoptotic pathway, and the regulation of ER-stress-induced apoptosis. As a safer natural alternative, these herbs and spices could be good candidates for chemopreventive or chemotherapeutic agents for CRC management because of their antiproliferative action on colorectal carcinoma cells and inhibitory activity on angiogenesis. Therefore, in this narrative review, six different spices and herbs: ginger (Zingiber officinale Roscoe), turmeric (Curcuma longa L.), garlic (Allium sativum L.), fenugreek (Trigonella foenum-graecum L.), sesame (Sesamum indicum L.), and flaxseed (Linum usitatissimum L.) used in daily cuisine were selected for this study and analyzed for their chemoprotective or chemotherapeutic roles in CRC management with underlying molecular mechanisms of actions. Initially, this study comprehensively discussed the molecular basis of CRC development, followed by culinary and traditional uses, current scientific research, and publications of selected herbs and spices on cancers. Lead compounds have been discussed comprehensively for each herb and spice, including anti-CRC phytoconstituents, antioxidant activities, anti-inflammatory properties, and finally, anti-CRC effects with treatment mechanisms. Future possible works have been suggested where applicable.

17 September 2012 in Molecules
Verified
Journal Article
Open access
PDF file
DODer Jiun Ooi
Der Jiun Ooi
SIShahid Iqbal
Shahid Iqbal
MIMaznah Ismail
Maznah Ismail
This study presents the proximate and mineral composition of Peperomia pellucida L., an underexploited weed plant in Malaysia. Proximate analysis was performed using standard AOAC methods and mineral contents were determined using atomic absorption spectrometry. The results indicated Peperomia pellucida to be rich in crude protein, carbohydrate and total ash contents. The high amount of total ash (31.22%) suggests a high-value mineral composition comprising potassium, calcium and iron as the main elements. The present study inferred that Peperomia pellucida would serve as a good source of protein and energy as well as micronutrients in the form of a leafy vegetable for human consumption.

1 May 2014 in Journal of Functional Foods
Verified
Journal Article
Closed access
MIMustapha Umar Imam
Mustapha Umar Imam
AIAminu Ishaka
Aminu Ishaka
DODer Jiun Ooi
Der Jiun Ooi
NZNur Diyana Md Zamri
Nur Diyana Md Zamri
NSNadarajan Sarega
Nadarajan Sarega
NENorhaizan Mohd Esa
Norhaizan Mohd Esa

1 April 2014 in LWT
Verified
Journal Article
Open access
KCKim Wei Chan
Kim Wei Chan
SIShahid Iqbal
Shahid Iqbal
NKNicholas M.H. Khong
Nicholas M.H. Khong
DODer Jiun Ooi
Der Jiun Ooi
MIMaznah Ismail
Maznah Ismail

10 January 2016 in Oxidative Medicine and Cellular Longevity
Verified
Journal Article
Open access
PDF file
NSNadarajan Sarega
Nadarajan Sarega
MIMustapha Umar Imam
Mustapha Umar Imam
DODer Jiun Ooi
Der Jiun Ooi
KCKim Wei Chan
Kim Wei Chan
NENorhaizan Md Esa
Norhaizan Md Esa
MIMaznah Ismail
Maznah Ismail
Clinacanthus nutans is used as traditional medicine in Asia but there are limited scientific studies to support its use. In this study, the stem and leaf of C. nutans were extracted using solvents of differing polarities, and their antioxidant capacities were determined using multiple antioxidant assays. The water and aqueous methanolic leaf extracts were further fractionated and their antioxidant capacities and phenolic compositions were tested. Furthermore, the efficacies of the water and aqueous methanolic leaf extracts were tested against hyperlipidemia‐induced oxidative stress in rats. Serum and hepatic antioxidant and oxidative stress markers were tested after feeding the rats with high fat diet together with the extracts or simvastatin for 7 weeks. The results indicated that both leaf extracts attenuated oxidative stress through increasing serum antioxidant enzymes activity and upregulating the expression of hepatic antioxidant genes. Multiple phenolic compounds were detected in the extracts and fractions of C. nutans, although protocatechuic acid was one of the most abundant and may have contributed significantly towards the bioactivities of the extracts. However, synergistic effects of different phenolics may have contributed to the overall bioactivities. C. nutans can be a good source of functional ingredients for the management of oxidative stress‐related diseases.