Wei Ney Yap

Dr. Wei Ney Yap


Research Focus & Metrics

Academic Career Length

17Years (2010-Present)

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

Representative Publications

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19 January 2018 in Nutrition & Metabolism
Verified
Journal Article
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NRNardev Ramanathan
Nardev Ramanathan
ETEsther Tan
Esther Tan
LLLi Jun Loh
Li Jun Loh
BSBoon Seng Soh
Boon Seng Soh
WYWei Ney Yap
Wei Ney Yap
Ageing is a nonmodifiable risk factor that is linked to increased likelihood of cardiovascular morbidities. Whilst many pharmacological interventions currently exist to treat many of these disorders such as statins for hypercholesterolemia or beta-blockers for hypertension, the elderly appear to present a greater likelihood of suffering non-related side effects such as increased risk of developing new onset type 2 diabetes (NODM). In some cases, lower efficacy in the elderly have also been reported. Alternative forms of treatment have been sought to address these issues, and there has been a growing interest in looking at herbal remedies or plant-based natural compounds. Oxidative stress and inflammation are implicated in the manifestation of ageing-related cardiovascular disease. Thus, it is natural that a compound that possesses both antioxidative and anti-inflammatory bioactivities would be considered. This review article examines the potential of tocotrienols, a class of Vitamin E compounds with proven superior antioxidative and anti-inflammatory activity compared to tocopherols (the other class of Vitamin E compounds), in ameliorating ageing-related cardiovascular diseases and its associated morbidities. In particular, the potential of tocotrienols in improving inflammaging, dyslipidemia and mitochondrial dysfunction in ageing-related cardiovascular diseases are discussed.

1 May 2010 in Cancer Letters
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Journal Article
Closed access
WYWei Ney Yap
Wei Ney Yap
NZNorazean Zaiden
Norazean Zaiden
YTYee Ling Tan
Yee Ling Tan
CNChang Piek Ngoh
Chang Piek Ngoh
XZXue Wu Zhang
Xue Wu Zhang
YYYee Leng Yap
Yee Leng Yap

16 October 2020 in Dermatology
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Journal Article
Closed access
PDF file
CTCheryl Wei Ling Teo
Cheryl Wei Ling Teo
STShawn Han Yueh Tay
Shawn Han Yueh Tay
HTHong Liang Tey
Hong Liang Tey
YUYee Wei Ung
Yee Wei Ung
WYWei Ney Yap
Wei Ney Yap
Background: Oxidative stress and inflammation are some of the proposed mechanisms involved in the pathogenesis of atopic dermatitis (AD). Current pharmacotherapeutic approaches are effective yet they are not without adverse effects. Vitamin E has great potential as an adjunctive treatment for AD owing to its antioxidant and anti-inflammatory bioactivities. Summary: This review article summarizes the current available evidence from cellular, animal and clinical studies on the relationship between vitamin E and AD. The future prospects of vitamin E are also discussed. Vitamin E in practice does not show any toxicity to humans within a range of reasonable dosage. Albeit rarely, vitamin E as a contact allergen should be considered. Collectively, this review envisaged vitamin E as an adjunctive treatment for AD patients. Future research on the distinct effects of different vitamin E isoforms as well as their delivery system in skin disorders is needed.

26 September 2017 in Journal of Cosmetic Dermatology
Verified
Journal Article
Open access
WYWei Ney Yap
Wei Ney Yap
Summary: Background: UV radiation from the sun is the most common environmental stressor to damage the skin. It is now well established that photodamaged skin manifests signs of mild but chronic inflammation, termed as “inflammaging.” Thus, there is an urgent need for anti‐inflammatory regimes that can limit the damage caused by inflammation. Objectives: This study aimed to evaluate the possible palliative effects of a new topical nanoemulsion formulation containing tocotrienol‐rich fraction ( TRF ) on UV ‐induced inflammation (erythema) of human skin. Methods: An in vitro model was used to demonstrate the ability of TRF to alleviate photodamage via attenuation of UV ‐induced oxidative stress and inflammation. Two ex vivo models (skin antioxidative potential and radical sun protection factor) were used to determine the efficacy of different formulations of TRF on the skin. A UV ‐induced erythema protection test in 20 subjects was conducted. Results: In vitro studies involving HaCaT keratinocytes revealed that TRF possesses marked anti‐inflammatory properties, as indicated by the attenuation of UV ‐induced upregulation of pro‐inflammatory cytokines. A 1% TRF formulation was found to be more effective in enhancing the endogenous antioxidative protection of skin compared to 1% TRF in medium chain triglycerides because of its higher penetration kinetic profile. The clinical study showed that formulated TRF was effective in reducing skin redness after UV irradiation as early as after 6 hours of application. A significant depigmentation was also observed in TRF treatment subjects. Conclusion: TRF may serve as an anti‐inflammatory compound that is safe to be applied daily to protect the skin from UV ‐induced inflammaging.

13 September 2022 in Atmospheric Pollution Research
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Journal Article
Open access
JNJuvenia Rui En Neo
Juvenia Rui En Neo
ZTZi Ning Teo
Zi Ning Teo
JYJolene Shi En Yeo
Jolene Shi En Yeo
CNCassey Kai Sing Ng
Cassey Kai Sing Ng
CTCheryl Wei Ling Teo
Cheryl Wei Ling Teo
WYWei Ney Yap
Wei Ney Yap

13 June 2022 in Allergy, Asthma & Clinical Immunology
Verified
Journal Article
Open access
PDF file
CTCheryl Wei Ling Teo
Cheryl Wei Ling Teo
SPStephanie Jia Ying Png
Stephanie Jia Ying Png
YUYee Wei Ung
Yee Wei Ung
WYWei Ney Yap
Wei Ney Yap
Background: Platelet-activating factor (PAF) has been suggested to be a potent inflammatory mediator in Allergic rhinitis (AR) pathogenesis. Vitamin E, an essential nutrient that comprises tocopherol and tocotrienol, is known as a potential therapeutic agent for airway allergic inflammation. This study aimed to investigate the beneficial effects of intranasal Tocotrienol-rich fraction (TRF) on PAF-induced AR in a rat model. Methods: Sprague Dawley rats were randomly assigned into 3 groups: Control, PAF-induced AR and PAF-induced AR with TRF treatment. To induce AR, 50 μl of 16 μg/ml PAF was nasally instilled into each nostril. From day 1 to 7 after AR induction, 10 μl of 16 μg/μl TRF was delivered intranasally to the TRF treatment group. Complete upper skulls were collected for histopathological evaluation on day 8. Results: The average severity scores of AR were significantly higher in the PAF-induced AR rats compared to both control and PAF-induced AR with TRF treatment. The histologic examination of the nasal structures showed moderate degree of inflammation and polymorphonuclear cells infiltration in the lamina propria, mucosa damage and vascular congestion in the PAF-induced AR rats. TRF was able to ameliorate the AR symptoms by restoring the nasal structures back to normal. H&E staining demonstrated a statistically significant benefit upon TRF treatment, where minimal degree of inflammation, and a reduction in the infiltration of polymorphonuclear cells, mucosa damage and vascular congestion were observed. Conclusion: TRF exhibited symptomatic relief action in AR potentially due to its antioxidant, anti-inflammatory and anti-allergic properties.