1.The effect of water extracts of Euphorbia hirta on cartilage degeneration in arthritic rats.
Kah Heng Lee ; Yu Sui Chen ; John Paul Judson ; Srikumar Chakravarthi ; Yen Mi Sim ; Hui Meng Er
The Malaysian journal of pathology 2008;30(2):95-102
The effect of water extracts of Euphorbia hirta on the histological features and expressions of matrix metalloproteinases (MMPs) and tissue inhibitors of matrix metalloproteinases (TIMPs) in the rat articular cartilage was investigated. Arthritis was induced in rats using Freund's Complete Adjuvant containing heat-killed M. tuberculosis, and treated with water extracts of E. hirta. Paraffin tissue sections of the arthritic joints were evaluated. The extent of cartilage degeneration was found to be greatest in rats treated with the highest dosage of E. hirta, followed by rats in the untreated group. Rats treated with the intermediary and low dosages of Euphorbia hirta showed improved histology. MMP-13 levels were found to be decreased with decreasing dosages of E. hirta. TIMP-1 levels were found to increase with decreasing dosages of E. hirta. MMP-3 levels fluctuated without any appreciable pattern. Low dosages of E. hirta seem to be beneficial in reducing cartilage degeneration in cases of arthritis.
Upper case ee
;
Rattus norvegicus
;
Euphorbia
;
Water
;
Degeneration, NOS
2.Parental preferences with regards to disclosure following adverse events occurring in relation to medication use or diagnosis in the care of their children – perspectives from Malaysia
Chin Hoong Wong ; Tock Rei Tan ; Hian Yue Heng ; Thangatorai Ramesh ; Pey Woei Ting ; Wei Shien Lee, Cheong Lieng Teng ; Nalliah Sivalingam ; Kah Kee Tan
The Medical Journal of Malaysia 2016;71(4):186-192
Introduction: Open disclosure is poorly understood in
Malaysia but is an ethical and professional responsibility.
The objectives of this study were to determine: (1) the
perception of parents regarding the severity of medical error
in relation to medication use or diagnosis; (2) the preference
of parents for information following the medical error and its
relation to severity; and (3) the preference of parents with
regards to disciplinary action, reporting, and legal action.
Methods: We translated and contextualised a questionnaire
developed from a previous study. The questionnaire
consisted of four case vignettes that described the
following: medication error with a lifelong complication;
diagnostic error with a lifelong complication; diagnostic
error without lifelong effect; and medication error without
lifelong effect. Each case vignette was followed by a series
of questions examining the subject’s perception on the
above areas. We also determined the content validity of the
questionnaire. We invited parents of Malaysian children
admitted to the paediatric wards of Tuanku Jaafar Hospital to
participate in the study.
Results: One hundred and twenty-three parents participated
in the study. The majority of parents wanted to be told
regarding the event. As the severity of the case vignettes
increased, the desire for information, remedial action,
acknowledgement of responsibility, compensation,
punishment, legal action, and reporting to a higher agency
also increased. The findings did not have strong evidence of
a relationship with subject’s demographics.
Conclusion: This study gives insights into previously
unexplored perspectives and preferences of parents in
Malaysia regarding open disclosure. It also highlights the
opportunity for more research in this area with potentially
broad applications.
Disclosure
;
Professional-Patient Relations
;
Patient Rights
3.Novel method of intraoperative liver tumour localisation with indocyanine green and near-infrared imaging.
Hui Jun LIM ; Adrian Kah Heng CHIOW ; Lip Seng LEE ; Siong San TAN ; Brian Kp GOH ; Ye Xin KOH ; Chung Yip CHAN ; Ser Yee LEE
Singapore medical journal 2021;62(4):182-189
INTRODUCTION:
Fluorescence imaging (FI) with indocyanine green (ICG) is increasingly implemented as an intraoperative navigation tool in hepatobiliary surgery to identify hepatic tumours. This is useful in minimally invasive hepatectomy, where gross inspection and palpation are limited. This study aimed to evaluate the feasibility, safety and optimal timing of using ICG for tumour localisation in patients undergoing hepatic resection.
METHODS:
From 2015 to 2018, a prospective multicentre study was conducted to evaluate feasibility and safety of ICG in tumour localisation following preoperative administration of ICG either on Day 0-3 or Day 4-7.
RESULTS:
Among 32 patients, a total of 46 lesions were resected: 23 were hepatocellular carcinomas (HCCs), 12 were colorectal liver metastases (CRLM) and 11 were benign lesions. ICG FI identified 38 (82.6%) lesions prior to resection. The majority of HCCs were homogeneous fluorescing lesions (56.6%), while CLRM were homogeneous (41.7%) or rim-enhancing (33.3%). The majority (75.0%) of the lesions not detected by ICG FI were in cirrhotic livers. Most (84.1%) of ICG-positive lesions detected were < 1 cm deep, and half of the lesions ≥ 1 cm in depth were not detected. In cirrhotic patients with malignant lesions, those given ICG on preoperative Day 0-3 and Day 4-7 had detection rates of 66.7% and 91.7%, respectively. There were no adverse events.
CONCLUSION
ICG FI is a safe and feasible method to assist tumour localisation in liver surgery. Different tumours appear to display characteristic fluorescent patterns. There may be no disadvantage of administering ICG closer to the operative date if it is more convenient, except in patients with liver cirrhosis.