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  1. Article ; Online: Synthetic Cathinone-Induced Myocarditis and Psychosis: A Case Report.

    Lee, Pei-Ying / Hsu, Chun-Chi / Chan, Chia-Hsiang

    Journal of addiction medicine

    2022  Volume 17, Issue 2, Page(s) e135–e137

    Abstract: Psychoactive substances are a diverse group of chemical substances that are ever-evolving structurally. Novel psychoactive substances are being reported in and are becoming increasingly popular in East and Southeast Asia, with synthetic cathinones ... ...

    Abstract Psychoactive substances are a diverse group of chemical substances that are ever-evolving structurally. Novel psychoactive substances are being reported in and are becoming increasingly popular in East and Southeast Asia, with synthetic cathinones becoming the drugs of choice. The use of synthetic cathinones has increased significantly over the years. However, the easy accessibility of these substances and their potentially damaging health effects have raised many concerns. Herein, we present the case of a patient who ingested mixed synthetic cathinones and eventually developed acute myocarditis and subsequent psychotic symptoms. The delayed presentation of psychosis coupled with initial cardiovascular symptoms was a unique phenomenon, making differential diagnosis challenging. The association between the use of synthetic cathinones and psychosis and myocarditis should be explored in view of the lack of relevant clinical data and potentially dire outcomes.
    MeSH term(s) Humans ; Synthetic Cathinone ; Myocarditis/chemically induced ; Myocarditis/diagnosis ; Alkaloids/adverse effects ; Central Nervous System Stimulants ; Psychotic Disorders/drug therapy
    Chemical Substances Synthetic Cathinone ; Alkaloids ; Central Nervous System Stimulants
    Language English
    Publishing date 2022-08-24
    Publishing country United States
    Document type Case Reports ; Journal Article
    ISSN 1935-3227
    ISSN (online) 1935-3227
    DOI 10.1097/ADM.0000000000001056
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Altered Outer Retinal Structure, Electrophysiology and Visual Perception in Parkinson's Disease.

    Tran, Katie K N / Lee, Pei Ying / Finkelstein, David I / McKendrick, Allison M / Nguyen, Bao N / Bui, Bang V / Nguyen, Christine T O

    Journal of Parkinson's disease

    2024  Volume 14, Issue 1, Page(s) 167–180

    Abstract: Background: Visual biomarkers of Parkinson's disease (PD) are attractive as the retina is an outpouching of the brain. Although inner retinal neurodegeneration in PD is well-established this has overlap with other neurodegenerative diseases and thus ... ...

    Abstract Background: Visual biomarkers of Parkinson's disease (PD) are attractive as the retina is an outpouching of the brain. Although inner retinal neurodegeneration in PD is well-established this has overlap with other neurodegenerative diseases and thus outer retinal (photoreceptor) measures warrant further investigation.
    Objective: To examine in a cross-sectional study whether clinically implementable measures targeting outer retinal function and structure can differentiate PD from healthy ageing and whether these are sensitive to intraday levodopa (L-DOPA) dosing.
    Methods: Centre-surround perceptual contrast suppression, macular visual field sensitivity, colour discrimination, light-adapted electroretinography and optical coherence tomography (OCT) were tested in PD participants (n = 16) and controls (n = 21). Electroretinography and OCT were conducted before and after midday L-DOPA in PD participants, or repeated after ∼2 hours in controls.
    Results: PD participants had decreased center-surround contrast suppression (p < 0.01), reduced macular visual field sensitivity (p < 0.05), color vision impairment (p < 0.01) photoreceptor dysfunction (a-wave, p < 0.01) and photoreceptor neurodegeneration (outer nuclear layer thinning, p < 0.05), relative to controls. Effect size comparison between inner and outer retinal parameters showed that photoreceptor metrics were similarly robust in differentiating the PD group from age-matched controls as inner retinal changes. Electroretinography and OCT were unaffected by L-DOPA treatment or time.
    Conclusions: We show that outer retinal outcomes of photoreceptoral dysfunction (decreased cone function and impaired color vision) and degeneration (i.e., outer nuclear layer thinning) were equivalent to inner retinal metrics at differentiating PD from healthy age-matched adults. These findings suggest outer retinal metrics may serve as useful biomarkers for PD.
    MeSH term(s) Adult ; Humans ; Parkinson Disease/complications ; Parkinson Disease/diagnostic imaging ; Parkinson Disease/drug therapy ; Levodopa/pharmacology ; Levodopa/therapeutic use ; Cross-Sectional Studies ; Retina/diagnostic imaging ; Tomography, Optical Coherence/methods ; Visual Perception ; Biomarkers ; Electrophysiology
    Chemical Substances Levodopa (46627O600J) ; Biomarkers
    Language English
    Publishing date 2024-01-06
    Publishing country Netherlands
    Document type Journal Article
    ZDB-ID 2620609-2
    ISSN 1877-718X ; 1877-7171
    ISSN (online) 1877-718X
    ISSN 1877-7171
    DOI 10.3233/JPD-230293
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Understanding how ageing impacts ganglion cell susceptibility to injury in glaucoma.

    van Koeverden, Anna K / Afiat, Brianna C / Nguyen, Christine To / Bui, Bang V / Lee, Pei Ying

    Clinical & experimental optometry

    2023  Volume 107, Issue 2, Page(s) 147–155

    Abstract: Glaucoma is a leading cause of blindness worldwide, with a marked increase in prevalence with advancing age. Due to the multifactorial nature of glaucoma pathogenesis, dissecting how ageing impacts upon glaucoma risk requires analysis and synthesis of ... ...

    Abstract Glaucoma is a leading cause of blindness worldwide, with a marked increase in prevalence with advancing age. Due to the multifactorial nature of glaucoma pathogenesis, dissecting how ageing impacts upon glaucoma risk requires analysis and synthesis of evidence from a vast literature. While there is a wealth of human clinical studies examining glaucoma pathogenesis and why older patients have increased risk, many aspects of the disease such as adaptations of retinal ganglion cells to stress, autophagy and the role of glial cells in glaucoma, require the use of animal models to study the complex cellular processes and interactions. Additionally, the accelerated nature of ageing in rodents facilitates the longitudinal study of changes that would not be feasible in human clinical studies. This review article examines evidence derived predominantly from rodent models on how the ageing process impacts upon various aspects of glaucoma pathology from the retinal ganglion cells themselves, to supporting cells and tissues such as glial cells, connective tissue and vasculature, in addition to oxidative stress and autophagy. An improved understanding of how ageing modifies these factors may lead to the development of different therapeutic strategies that target specific risk factors or processes involved in glaucoma.
    MeSH term(s) Animals ; Humans ; Longitudinal Studies ; Glaucoma/etiology ; Glaucoma/pathology ; Retinal Ganglion Cells/pathology ; Aging ; Blindness ; Disease Models, Animal ; Intraocular Pressure
    Language English
    Publishing date 2023-11-19
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 639275-1
    ISSN 1444-0938 ; 0816-4622
    ISSN (online) 1444-0938
    ISSN 0816-4622
    DOI 10.1080/08164622.2023.2279734
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Platycodi radix aqueous extract salvages doxorubicin-induced senescence by mitochondrial reactive oxygen species reduction in umbilical cord matrix stem cells.

    Lee, Pei-Ying / Sitorus, Maria Angelina / Kuo, Chia-Hua / Tsai, Bruce Chi-Kang / Kuo, Wei-Wen / Lin, Kuan-Ho / Lu, Shang-Yeh / Lin, Yueh-Min / Ho, Tsung-Jung / Huang, Chih-Yang

    Environmental toxicology

    2024  

    Abstract: Platycodi radix is a widely used herbal medicine that contains numerous phytochemicals beneficial to health. The health and biological benefits of P. radix have been found across various diseases. The utilization of umbilical cord stromal stem cells, ... ...

    Abstract Platycodi radix is a widely used herbal medicine that contains numerous phytochemicals beneficial to health. The health and biological benefits of P. radix have been found across various diseases. The utilization of umbilical cord stromal stem cells, derived from Wharton's jelly of the human umbilical cord, has emerged as a promising approach for treating degenerative diseases. Nevertheless, growing evidence indicates that the function of stem cells declines with age, thereby limiting their regenerative capacity. The primary objective in this study is to investigate the beneficial effects of P. radix in senescent stem cells. We conducted experiments to showcase that diminished levels of Lamin B1 and Sox-2, along with an elevation in p21, which serve as indicative markers for the senescent stem cells. Our findings revealed the loss of Lamin B1 and Sox-2, coupled with an increase in p21, in umbilical cord stromal stem cells subjected to a low-dose (0.1 μM) doxorubicin (Dox) stimulation. However, P. radix restored the Dox-damage in the umbilical cord stromal stem cells. P. radix reversed the senescent conditions when the umbilical cord stromal stem cells exposed to Dox-induced reactive oxygen species (ROS) and mitochondrial membrane potential are significantly changed. In Dox-challenged aged umbilical cord stromal stem cells, P. radix reduced senescence, increased longevity, prevented mitochondrial dysfunction and ROS and protected against senescence-associated apoptosis. This study suggests that P. radix might be as a therapeutic and rescue agent for the aging effect in stem cells. Inhibition of cell death, mitochondrial dysfunction and aging-associated ROS with P. radix provides additional insights into the underlying molecular mechanisms.
    Language English
    Publishing date 2024-04-01
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1463449-1
    ISSN 1522-7278 ; 1520-4081
    ISSN (online) 1522-7278
    ISSN 1520-4081
    DOI 10.1002/tox.24240
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: The Effect of Aging on Retinal Function and Retinal Ganglion Cell Morphology Following Intraocular Pressure Elevation.

    Lee, Pei Ying / Zhao, Da / Wong, Vickie H Y / Chrysostomou, Vicki / Crowston, Jonathan G / Bui, Bang V

    Frontiers in aging neuroscience

    2022  Volume 14, Page(s) 859265

    Abstract: Aging and elevated intraocular pressure (IOP) are two major risk factors for glaucomatous optic neuropathy; a condition characterized by the selective, progressive injury, and subsequent loss of retinal ganglion cells (RGCs). We examined how age modified ...

    Abstract Aging and elevated intraocular pressure (IOP) are two major risk factors for glaucomatous optic neuropathy; a condition characterized by the selective, progressive injury, and subsequent loss of retinal ganglion cells (RGCs). We examined how age modified the capacity for RGCs to functionally recover following a reproducible IOP elevation (50 mmHg for 30 min). We found that RGC functional recovery (measured using electroretinography) was complete by 7 days in 3-month-old mice but was delayed in 12-month-old mice until 14 days. At the 7-day recovery endpoint when RGC function had recovered in young but not older eyes, we examined RGC structural responses to IOP-related stress by analyzing RGC dendritic morphology. ON-RGC cell volume was attenuated following IOP elevation in both young and older mice. We also found that following IOP elevation OFF-RGC dendritic morphology became less complex per cell volume in young mice, an effect that was not observed in older eyes. Our data suggest that adaptations in OFF-RGCs in young eyes were associated with better functional recovery 7 days after IOP elevation. Loss of RGC cellular adaptations may account for delayed functional recovery in older eyes.
    Language English
    Publishing date 2022-05-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2558898-9
    ISSN 1663-4365
    ISSN 1663-4365
    DOI 10.3389/fnagi.2022.859265
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: 1,4-Bis((9H-Carbazol-9-yl)Methyl)Benzene-Containing Electrochromic Polymers as Potential Electrodes for High-Contrast Electrochromic Devices.

    Kuo, Chung-Wen / Chang, Jui-Cheng / Lee, Li-Ting / Lin, Yi-Dong / Lee, Pei-Ying / Wu, Tzi-Yi

    Polymers

    2022  Volume 14, Issue 6

    Abstract: Four 1,4-bis((9H-carbazol-9-yl)methyl)benzene-containing polymers (PbCmB, P(bCmB- ...

    Abstract Four 1,4-bis((9H-carbazol-9-yl)methyl)benzene-containing polymers (PbCmB, P(bCmB-
    Language English
    Publishing date 2022-03-15
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2527146-5
    ISSN 2073-4360 ; 2073-4360
    ISSN (online) 2073-4360
    ISSN 2073-4360
    DOI 10.3390/polym14061175
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Ohwia caudata aqueous extract attenuates doxorubicin‐induced mitochondrial dysfunction in Wharton's jelly‐derived mesenchymal stem cells

    Lee, Pei‐Ying / Tsai, Bruce Chi‐Kang / Sitorus, Maria Angelina / Lin, Pi‐Yu / Lin, Shinn‐Zong / Shih, Cheng‐Yen / Lu, Shang‐Yeh / Lin, Yueh‐Min / Ho, Tsung‐Jung / Huang, Chih‐Yang

    Environmental Toxicology. 2023 Oct., v. 38, no. 10 p.2450-2461

    2023  

    Abstract: Mitochondrial dysfunction has been linked to many diseases, including organ degeneration and cancer. Wharton's jelly‐derived mesenchymal stem cells provide a valuable source for stem cell‐based therapy and represent an emerging therapeutic approach for ... ...

    Abstract Mitochondrial dysfunction has been linked to many diseases, including organ degeneration and cancer. Wharton's jelly‐derived mesenchymal stem cells provide a valuable source for stem cell‐based therapy and represent an emerging therapeutic approach for tissue regeneration. This study focused on screening the senomorphic properties of Ohwia caudata aqueous extract as an emerging strategy for preventing or treating mitochondrial dysfunction in stem cells. Wharton's jelly‐derived mesenchymal stem cells were incubated with 0.1 μM doxorubicin, for 24 h to induce mitochondrial dysfunction. Next, the cells were treated with a series concentration of Ohwia caudata aqueous extract (25, 50, 100, and 200 μg/mL) for another 24 h. In addition, an untreated control group and a doxorubicin‐induced mitochondrial dysfunction positive control group were maintained under the same conditions. Our data showed that Ohwia caudata aqueous extract markedly suppressed doxorubicin‐induced mitochondrial dysfunction by increasing Tid1 and Tom20 expression, decreased reactive oxygen species production, and maintained mitochondrial membrane potential to promote mitochondrial stability. Ohwia caudata aqueous extract retained the stemness of Wharton's jelly‐derived mesenchymal stem cells and reduced the apoptotic rate. These results indicate that Ohwia caudata aqueous extract protects Wharton's jelly‐derived mesenchymal stem cells against doxorubicin‐induced mitochondrial dysfunction and can potentially prevent mitochondrial dysfunction in other cells. This study provides new directions for the medical application of Ohwia caudata.
    Keywords apoptosis ; doxorubicin ; ecotoxicology ; membrane potential ; mitochondria ; mitochondrial membrane ; reactive oxygen species ; therapeutics ; tissue repair
    Language English
    Dates of publication 2023-10
    Size p. 2450-2461.
    Publishing place John Wiley & Sons, Inc.
    Document type Article ; Online
    Note JOURNAL ARTICLE
    ZDB-ID 1463449-1
    ISSN 1522-7278 ; 1520-4081
    ISSN (online) 1522-7278
    ISSN 1520-4081
    DOI 10.1002/tox.23880
    Database NAL-Catalogue (AGRICOLA)

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  8. Article ; Online: Retinal Assessment Using In Vivo Electroretinography and Optical Coherence Tomography in Rodent Models of Diabetes.

    Zhao, Da / Lee, Pei Ying / Wong, Vickie H Y / Nishimura, Tomoharu / Hoang, Anh / Tran, Katie K N / van Koeverden, Anna K / Afiat, Brianna C / Nguyen, Christine T O / Bui, Bang V

    Methods in molecular biology (Clifton, N.J.)

    2023  Volume 2678, Page(s) 37–48

    Abstract: Electroretinography and optical coherence tomography imaging allow for non-invasive quantitative assessment of the retina. These approaches have become mainstays for identifying the very earliest impact of hyperglycemia on retinal function and structure ... ...

    Abstract Electroretinography and optical coherence tomography imaging allow for non-invasive quantitative assessment of the retina. These approaches have become mainstays for identifying the very earliest impact of hyperglycemia on retinal function and structure in animal models of diabetic eye disease. Moreover, they are essential for assessing the safety and efficacy of novel treatment approaches for diabetic retinopathy. Here, we describe approaches for in vivo electroretinography and optical coherence tomography imaging in rodent models of diabetes.
    MeSH term(s) Animals ; Electroretinography ; Tomography, Optical Coherence/methods ; Rodentia ; Retina/diagnostic imaging ; Diabetic Retinopathy/diagnostic imaging ; Diabetes Mellitus
    Language English
    Publishing date 2023-05-31
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-0716-3255-0_4
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Measuring the Full-Field Electroretinogram in Rodents.

    Lee, Pei Ying / Zhao, Da / Wong, Vickie H Y / Hoang, Anh / Tran, Katie K N / van Koeverden, Anna K / Afiat, Brianna C / Nguyen, Christine T O / Bui, Bang V

    Methods in molecular biology (Clifton, N.J.)

    2023  Volume 2708, Page(s) 131–140

    Abstract: Electroretinography allows for noninvasive functional assessment of the retina and is a mainstay for preclinical studies of retinal function in health and disease. The full-field electroretinogram is useful for a variety of applications as it returns a ... ...

    Abstract Electroretinography allows for noninvasive functional assessment of the retina and is a mainstay for preclinical studies of retinal function in health and disease. The full-field electroretinogram is useful for a variety of applications as it returns a functional readout from each of the major cell classes within the retina: photoreceptors, bipolar cells, amacrine cells, and retinal ganglion cells. Rodent models are commonly employed in ocular degeneration studies due to the fast throughput of these mammalian species and the conservation of the electroretinogram from the preclinic to the clinic. Here we describe approaches for in vivo electroretinography in rodent models.
    MeSH term(s) Animals ; Electroretinography ; Rodentia ; Retina ; Retinal Ganglion Cells ; Amacrine Cells
    Language English
    Publishing date 2023-08-07
    Publishing country United States
    Document type Journal Article
    ISSN 1940-6029
    ISSN (online) 1940-6029
    DOI 10.1007/978-1-0716-3409-7_14
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Ohwia caudata aqueous extract attenuates doxorubicin-induced mitochondrial dysfunction in Wharton's jelly-derived mesenchymal stem cells.

    Lee, Pei-Ying / Tsai, Bruce Chi-Kang / Sitorus, Maria Angelina / Lin, Pi-Yu / Lin, Shinn-Zong / Shih, Cheng-Yen / Lu, Shang-Yeh / Lin, Yueh-Min / Ho, Tsung-Jung / Huang, Chih-Yang

    Environmental toxicology

    2023  Volume 38, Issue 10, Page(s) 2450–2461

    Abstract: Mitochondrial dysfunction has been linked to many diseases, including organ degeneration and cancer. Wharton's jelly-derived mesenchymal stem cells provide a valuable source for stem cell-based therapy and represent an emerging therapeutic approach for ... ...

    Abstract Mitochondrial dysfunction has been linked to many diseases, including organ degeneration and cancer. Wharton's jelly-derived mesenchymal stem cells provide a valuable source for stem cell-based therapy and represent an emerging therapeutic approach for tissue regeneration. This study focused on screening the senomorphic properties of Ohwia caudata aqueous extract as an emerging strategy for preventing or treating mitochondrial dysfunction in stem cells. Wharton's jelly-derived mesenchymal stem cells were incubated with 0.1 μM doxorubicin, for 24 h to induce mitochondrial dysfunction. Next, the cells were treated with a series concentration of Ohwia caudata aqueous extract (25, 50, 100, and 200 μg/mL) for another 24 h. In addition, an untreated control group and a doxorubicin-induced mitochondrial dysfunction positive control group were maintained under the same conditions. Our data showed that Ohwia caudata aqueous extract markedly suppressed doxorubicin-induced mitochondrial dysfunction by increasing Tid1 and Tom20 expression, decreased reactive oxygen species production, and maintained mitochondrial membrane potential to promote mitochondrial stability. Ohwia caudata aqueous extract retained the stemness of Wharton's jelly-derived mesenchymal stem cells and reduced the apoptotic rate. These results indicate that Ohwia caudata aqueous extract protects Wharton's jelly-derived mesenchymal stem cells against doxorubicin-induced mitochondrial dysfunction and can potentially prevent mitochondrial dysfunction in other cells. This study provides new directions for the medical application of Ohwia caudata.
    MeSH term(s) Animals ; Wharton Jelly/metabolism ; Mesenchymal Stem Cells/metabolism ; Doxorubicin/toxicity ; Cells, Cultured ; Mitochondria/metabolism ; Urodela ; Cell Differentiation
    Chemical Substances Doxorubicin (80168379AG)
    Language English
    Publishing date 2023-07-17
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1463449-1
    ISSN 1522-7278 ; 1520-4081
    ISSN (online) 1522-7278
    ISSN 1520-4081
    DOI 10.1002/tox.23880
    Database MEDical Literature Analysis and Retrieval System OnLINE

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