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ABSTRACT Liposomes, the vesicles of phospholipid bilayer, can encapsulate both hydrophilic and lipophilic drugs and protect them from degradation. Liposomes have been extensively studied and continue to create intense interest in research since their discovery in the mid-1960s. Since then, liposomes have been considered to be the most successful nanocarriers for drug deliver and have made their way to the market. Currently, a number of liposomal formulations are on the marker for cancer treatment and many more are in pipe line. This review discusses about the liposome components, methods of preparation, drug encapsulation mechanism and the potential therapeutic applications of liposomes in cancer therapy.
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Background: Subclinical hypothyroidism (SCH) is a common disorder and has been implicated in increased cardiovascular morbidity and mortality. Therefore, it is important to study the effect of SCH on cardiac morphology and function. Thus, present study titled “Study of LV functions in patients of subclinical hypothyroidism in patients coming to rural medical of sub-Himalayan region of India” was conducted in the department of medicine, Rajinder Prasad government medical Tanda over a period of three years from December, 2010 to November, 2013 to study left ventricular function in subclinical hypothyroidism. Methods: The study was conducted in the department of medicine, Rajinder Prasad government medical Tanda over a period of three years from December, 2010 to November, 2013 to study left ventricular function in subclinical hypothyroidism. The data was analysed using computer software Epi-info version 6.0 and SPSS version 12.0 for Windows. Descriptive characteristics were presented as percentages for quantitative variables including measurement of thyroid hormones and ejection fraction. Mean and standard deviation were reported. Results: Diastolic parameters were markedly altered, mainly isovolumic relaxation time, which was increased and reduction of E/A wave ratio (<1). Systolic function parameters were within normal range. 155 patients had diastolic dysfunction with E/A wave <1.45 patients were not affected and they had E/A wave >1. Conclusions: Implication for echocardiography in SCH patients observed were that early recognition of silent diastolic dysfunction can be done. We can institute L-thyroxinee therapy which has been found to reverse diastolic dysfunction of heart along with improvement in lipid levels, decreased systemic vascular resistance, diastolic hypertension and coagulation profile. SCH, invariably affects heart and sooner or later and leads to diastolic dysfunction. Early recognition by echocardiography and then treatment with L-thyroxinee is indicated.
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Background: Coronary events presents about ten years later in women than men. There exist distinct gender differences in terms of presentation of symptoms, validity of diagnostic tests and complications. Methods: The study was conducted in the department of medicine R.P. Govt. Medical College (RPGMC) Himachal Pradesh. Consecutive 300 patients of acute coronary syndrome from June 2011 to June 2012 were included in the study. Demographical profile was recorded with focused clinical examination and relevant investigation with lipid profile was done. Results: Among the study population of 300 individuals, 201 (67%) were males and 99 (33%) were females. The mean age among male patients was 61.3±11.7 years and in female patients the mean age was 65.6±11.20 years. 68.8% of females presented after 60 yrs of age. Dyslipidemia was the commonest risk factor followed by hypertension and obesity. 12.2% of female patients were smokers. Chest pain was the commonest presenting symptom seen in 82% cases. There was mean delay of 31.0±54.5 hrs in the presentation of females for treatment. ST Elevated Myocardial Infarction occurred less frequently in females. Conclusions: Acute coronary syndrome is more age dependent in females. The predominance of dyslipidemia, hypertension and obesity as risk factors gives a message for primary care physicians to create awareness for the prevention of Acute Coronary Syndrome. The atypical symptoms should be recognised early which should further prevent the delay in presentation.
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Despite the fact that many new drugs and technologies have been developed to combat the infectious diseases, these have continued to be global health challenges. The use of conventional antimicrobial agents against these infections is always associated with problems such as the development of multiple drug resistance and adverse side effects. In addition, the inefficient traditional drug delivery system results in inadequate therapeutic index, low bioavailability of drugs and many other limitations. In this regard, antimicrobial nanoparticles and nanosized drug delivery carriers have emerged as potent effective agents against the infections. Nanoparticles have unique properties owing to their ultra small and controllable size such as high surface area, enhanced reactivity, and functionalizable structure. This review focused on different classes of antimicrobial nanoparticles, including metal, metal oxide and others along with their mechanism of action and their potential use against the infections. The review also focused on the development of nanoparticle systems for antimicrobial drug delivery and use of these systems for delivery of various antimicrobial agents, giving an overview about modern nanoparticle based therapeutic strategies against the infections.