Ethics, Medical

Mechanism ; Gallstones ; Cholesterol

Clothing ; Infectious Disease Transmission, Professional-to-Patient ; Methicillin-Resistant Staphylococcus aureus/*isolation & purification ; Physician-Patient Relations ; Safety ; Staphylococcal Infections/*transmission

Studies show that the pH of the malaria parasite’s digestive vacuole (DV) plays a key role in the physiological functions of this organelle and antimalarial drug accumulation, and yet is technically difficult to measure. In this study, a flow cytometry-based technique was developed to measure the DV pH using a ratiometric pH indicator, FITC-dextran loaded into the DV of saponin-permeabilized parasites. To calculate the DV pH, a standard pH calibration curve was generated by incubating the saponin-permeabilized cells in buffers with different pH in the presence of an ionophore, CCCP. The measured average pH of the DV was 5.27 ± 0.03 that is approximately the same in the parasites observed microscopically by Hayward et al. (2006) (5.50 ± 0.14) using the same probe. The removal of glucose from the medium, causing a rapid depletion of parasite ATP, resulted in an alkalization of the DV. The DV was reacidified upon restoration of glucose to the medium. This technique provides a rapid, simple and quantitative measurement of the DV pH on a large number of cells. It will also be useful in future attempts to evaluate the effect of antimalarial drugs (i.e. chloroquineand artemisinin-based drugs) in pH changes of the DV.

Kidney Failure, Acute

Osteo-odontokeratoprosthesis (OOKP) surgery is a technique used to replace damaged cornea in blind patients for whom cadaveric transplantation is not feasible. OOKP surgery is a complex procedure requiring lifetime follow–up. The preservation of the osteo–odontolamina is the vital feature in maintaining the stability of the OOKP. Early detection of lamina resorption enables early prophylactic measures to be taken and prevent resorption-related complications. This case illustrates the radiological findings of the first OOKP surgery in Malaysia and the role of multidetector computed tomography (MDCT) in postoperative management of OOKP surgery.

OBJECTIVE: 1.To evaluates and recognizes findings in chest radiograph in patients with laboratory-confirmed S-OIV (H1N1) infection treated at UKMMC. 2. To evaluate whether the findings on initial chest radiographs of influenza A (H1N1) patients can help to predict the prognosis. MATERIAL AND METHODS: Total of 109 adult patients presenting to the Universiti Kebangsaan Malaysia Medical Centre (UKMMC) with flu-like symptoms who were positive for influenza A and these patients had underwent chest radiographs (CXR). The initial CXRs were evaluated for the pattern (consolidation, ground-glass, and reticulation), distribution, and extend of abnormality. The disease is classifies by the clinical severity (mild, moderate or severe illness) and adverse outcome (ventilated, death or recovered well). RESULTS: The initial CXRs were normal in 56% of cases. The predominant radiographic finding was consolidation, most commonly involving the middle and lower zones (35% of cases). There is no significant association between initial CXR findings with the patient clinical outcome either fully recovered or death/ ventilated. CONCLUSION: Normal chest radiographs is the most common radiographic finding in S-OIV (H1N1) infection and the most common abnormal lung finding is consolidation. Initial chest radiographs did not determine the patient clinical outcome and a normal initial radiograph could not exclude adverse outcome.
Influenza A Virus, H1N1 Subtype

A better educated public has started to challenge the way decisions are made in medical research activities. Although Institutional and National Guidelines on Research are in place, there are fears that Institutional Review Boards (IRBs) and funding agencies are only fairly active in scientific and ethical reviews of research proposals but not on oversight of projects after their initiation. These issues are integral to good research governance and researchers and custodians of research ethics must ensure that public interest is not compromised. Medical progress is based on research including human experimentation carried out according to guiding principles as enunciated in the Declaration of Helsinki (2000), but the quality of compliance with the Declaration is an important issue. Better choice and appropriate training of members of IRBs to improve the quality of decision making and governance processes are urgently needed. Competency in evaluation of proposals requires not only the appropriate scientific knowledge but also access to relevant preclinical and other data. Unfortunately, the completeness and quality of such data may not be adequate. Public interest demands that injury to trial subjects in clinical trials is minimized if not avoided completely. Unfortunately this is not always possible with trials where novel biological modes of action are tested. A more robust evaluation mechanism for project approval may minimize but not completely avoid injury to subjects; thus insurance cover to provide care and compensation to subjects must be compulsory. The decision to approve or reject a project must be based on the balance of potential risks and benefits, taking into consideration justifiable distributive risks to target communities and populations. Economic considerations should never be the primary focus, especially when there are real concerns that the migration of early phase clinical trials including vaccine trials to developing countries is based on the perceived less stringent ethical requirements and oversight there.

Kidney Failure, Acute ; Hospitals, General