Umul Hanim Yusoff

Dr. Umul Hanim Yusoff


Research Focus & Metrics

Academic Career Length

8Years (2019-Present)

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

Representative Publications

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27 February 2025 in International Journal of Obesity
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Journal Article
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Vetriselvan SubramaniyanVetriselvan Subramaniyan
Vetriselvan Subramaniyan
UYUmul Hanim Yusoff
Umul Hanim Yusoff
The worldwide health emergency of obesity is closely connected to how dietary fats are metabolized, whereas the process is significantly influenced by pancreatic lipase (PL), an enzyme critical for lipid hydrolysis into fatty acids. This narrative review employs a methodological approach utilizing literature searches of PubMed data up to March 2024. The search term criteria encompasses keywords related to the role, mechanism, challenges, and current and future treatments of pancreatic lipase in obesity with an overall references is 106. This paper offers a comprehensive explanation of the role of PL, underlining its significance in the digestive process and lipid imbalances that contribute to obesity and by extension, its impact on obesity development and progression. Additionally, it delves into the dual functionality of the pancreas, emphasizing its impact on metabolism and energy utilization which, when dysregulated, promotes obesity. A focal point of this review is the investigation into the efficacy, challenges, and adverse effects of current pancreatic lipase inhibitors, with orlistat being highlighted as a primary current drug delivery. By discussing advanced obesity treatments, including the exploration of novel anti-obesity medications that target specific biological pathways, this review underscores the complexity of obesity treatment and the necessity for a multifaceted approach. In conclusion, this paper emphasizing the importance of understanding the role of enzymes like pancreatic lipase mechanistic and adopting a multidisciplinary approach to treatment and side effects of current obesity drugs and explore new emerging therapeutic strategies for more effective obesity management.

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Journal Article
Open access
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SEShamsi Ebrahimi
Shamsi Ebrahimi
UYUmul Hanim Yusoff
Umul Hanim Yusoff
CSCoswald STEPHEN SIPAUT
Coswald STEPHEN SIPAUT
NJNorsazlina Binti Ahmad Jan
Norsazlina Binti Ahmad Jan
SASazmal Arshad
Sazmal Arshad
EHEng How
Eng How
Recently, composite scaffolding has found many applications in hard tissue engineering due to a number of desirable features. In this present study, hydroxyapatite/bioglass (HAp/BG) nanocomposite scaffolds were prepared in different ratios using a hydrothermal approach. The aim of this research was to evaluate the adhesion, growth, viability, and osteoblast differentiation behavior of human Wharton’s-jelly-derived mesenchymal stem cells (hWJMSCs) on HAp/BG in vitro as a scaffold for application in bone tissue engineering. Particle size and morphology were investigated by TEM and bioactivity was assessed and proven using SEM analysis with hWJMSCs in contact with the HAp/BG nanocomposite. Viability was evaluated using PrestoBlueTM assay and early osteoblast differentiation and mineralization behaviors were investigated by ALP activity and EDX analysis simultaneously. TEM results showed that the prepared HAp/BG nanocomposite had dimensions of less than 40 nm. The morphology of hWJMSCs showed a fibroblast-like shape, with a clear filopodia structure. The viability of hWJMSCs was highest for the HAp/BG nanocomposite with a 70:30 ratio of HAp to BG (HAp70/BG30). The in vitro biological results confirmed that HAp/BG composite was not cytotoxic. It was also observed that the biological performance of HAp70/BG30 was higher than HAp scaffold alone. In summary, HAp/BG scaffold combined with mesenchymal stem cells showed significant potential for bone repair applications in tissue engineering.

23 October 2019 in Materials Technology
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Journal Article
Closed access
PPPERNG YANG PUAH
PERNG YANG PUAH
UYUmul Hanim Yusoff
Umul Hanim Yusoff
PLPingChin Lee
PingChin Lee
PMPak Yan Moh
Pak Yan Moh
EHEng How
Eng How
Graphene oxide (GO) materials have been extensively employed in mesenchymal stem cell (MSCs) research due to its unique nanotopography. Herein, various concentrations of GO flakes were used to fabricate different thickness of multilayer graphene oxide (m-GO) films using a simple drop-casting method and characterized by FTIR and AFM. The biocompatibility of m-GO films in culturing WJ-MSCs was investigated based on cell morphology, cell viability and osteogenic differentiation ability. Importantly, WJ-MSCs adhered and proliferated successfully on the m-GO films (6.25 µg, 12.5 µg and 25 µg) and showed no difference in cell morphology and viability after 5 days culture. Moreover, the WJ-MSCs growth on GO films (6.25 µg, 12.5 µg and 25 µg) enhanced the osteogenic differentiation as compared to the control (glass coverslip). Hence, the simple and inexpensive drop-casted fabrication strategy could provide biocompatible m-GO films to unlock the wider potential of WJ-MCSs in tissue engineering application.

19 September 2023 in Journal of Science: Advanced Materials and Devices
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Journal Article
Open access
UYUmul Hanim Yusoff
Umul Hanim Yusoff
SEShamsi Ebrahimi
Shamsi Ebrahimi
ANAhmad Jan Norsazlina
Ahmad Jan Norsazlina
PLPingChin Lee
PingChin Lee
PTPeik Lin Teoh
Peik Lin Teoh
SHSiew Eng How
Siew Eng How