1.Breast Necrosis: A Rare Case of Neglected Phyllodes Tumour
Malaysian Journal of Medicine and Health Sciences 2019;15(1):79-81
Phyllodes tumour (PT) of the breast is firstly described in literature as early as 1838. This article reports the youngest recorded case of giant complicated PT and the role of toilet mastectomy as a salvage surgery. A 19-year-old lady presented with a gigantic lump of the left breast for 6 months which was rapidly growing (20 x 20 cm) and complicated with a foul-smelling blackish discoloration of the breast skin and tissues. Toilet mastectomy was performed as a result. The specimen weighed 4.0 kg with histopathological report of the tumor being borderline phyllodes. Herein, we describe a case of PT, who presented with breast necrosis and we discuss its medico-social aspect of it.
Phyllodes tumour
2.Novel Fabrication of MicroRNA Nanoparticle-Coated Coronary Stent for Prevention of Post-Angioplasty Restenosis.
Hui Lian CHE ; In Ho BAE ; Kyung Seob LIM ; Saji UTHAMAN ; In Taek SONG ; Haeshin LEE ; Duhwan LEE ; Won Jong KIM ; Youngkeun AHN ; In Kyu PARK ; Myung Ho JEONG
Korean Circulation Journal 2016;46(1):23-32
BACKGROUND AND OBJECTIVES: MicroRNA 145 is known to be responsible for cellular proliferation, and its enhanced expression reportedly inhibits the retardation of vascular smooth muscle cell growth specifically. In this study, we developed a microRNA 145 nanoparticle immobilized, hyaluronic acid (HA)-coated stent. MATERIALS AND METHODS: For the gene therapy, we used disulfide cross-linked low molecular polyethylenimine as the carrier. The microRNA 145 was labeled with YOYO-1 and the fluorescent microscopy images were obtained. The release of microRNA 145 from the stent was measured with an ultra violet spectrophotometer. The downstream targeting of the c-Myc protein and green fluorescent protein was determined by Western blotting. Finally, we deployed microRNA 145/ssPEI nanoparticles immobilized on HA-coated stents in the balloon-injured external iliac artery in a rabbit restenosis model. RESULTS: Cellular viability of the nanoparticle-immobilized surface tested using A10 vascular smooth muscle cells showed that MSN exhibited negligible cytotoxicity. In addition, microRNA 145 and downstream signaling proteins were identified by western blots with smooth muscle cell (SMC) lysates from the transfected A10 cell, as the molecular mechanism for decreased SMC proliferation that results in the inhibition of in-stent restenosis. MicroRNA 145 released from the stent suppressed the growth of the smooth muscle at the peri-stent implantation area, resulting in the prevention of restenosis at the post-implantation. We investigated the qualitative analyses of in-stent restenosis in the rabbit model using micro-computed tomography imaging and histological staining. CONCLUSION: MicroRNA 145-eluting stent mitigated in-stent restenosis efficiently with no side effects and can be considered a successful substitute to the current drug-eluting stent.
Blotting, Western
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Cell Proliferation
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Drug-Eluting Stents
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Genetic Therapy
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Hyaluronic Acid
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Iliac Artery
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MicroRNAs*
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Microscopy
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Muscle, Smooth
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Muscle, Smooth, Vascular
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Myocytes, Smooth Muscle
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Nanoparticles
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Polyethyleneimine
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Stents*
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Viola
3.Characteristics of patients who made a return visit within 72 hours to the emergency department of a Singapore tertiary hospital.
Amy Hui Sian CHAN ; Shu Fang HO ; Stephanie Man Chung FOOK-CHONG ; Sherman Wei Qiang LIAN ; Nan LIU ; Marcus Eng Hock ONG
Singapore medical journal 2016;57(6):301-306
INTRODUCTION72-hour emergency department (ED) reattendance is a widely-used quality indicator for quality of care and patient safety. It is generally assumed that patients who return within 72 hours of ED discharge (72-hour re-attendees) received inadequate treatment or evaluation. The current literature also suggests considerable variation in probable causes of 72-hour ED reattendances internationally. This study aimed to understand the characteristics of these patients at the ED of a Singapore tertiary hospital.
METHODSWe conducted a retrospective cohort study on all ED visits between 1 January 2013 and 31 December 2013. 72-hour re-attendees were compared against non-re-attendees based on patient demographics, mode of arrival, patient acuity category status (i.e. P1/P2/P3/P4), seniority ranking of doctor-in-charge and medical diagnoses. Multivariate analysis using the generalised linear model was conducted on variables associated with 72-hour ED re-attendance.
RESULTSAmong 104,751 unique patients, 3,065 (2.93%) were in the 72-hour re-attendees group. Multivariate analysis showed that the following risk factors were associated with higher risk of returning within 72 hours: male gender, older age, arrival by ambulance, triaged as P2, diagnoses of heart problems, abdominal pain or viral infection (all p < 0.001), and Chinese ethnicity (p = 0.006). There was no significant difference in the seniority ranking of the doctor-in-charge between both groups (p = 0.419).
CONCLUSIONSeveral patient and event factors were associated with higher risk of being a 72-hour re-attendee. This study forms the basis for hypothesis generation and further studies to explore reasons behind reattendances so that interventions can be developed to target high-risk groups.
Abdominal Pain ; Adult ; Aged ; Aged, 80 and over ; China ; Data Mining ; Electronic Health Records ; Emergency Medicine ; methods ; statistics & numerical data ; Emergency Service, Hospital ; statistics & numerical data ; Female ; Humans ; Male ; Middle Aged ; Multivariate Analysis ; Patient Discharge ; Patient Readmission ; Patient Safety ; Quality of Health Care ; Retrospective Studies ; Risk ; Singapore ; Tertiary Care Centers ; Triage ; methods ; Young Adult