Adequate aqueous solubility has been one of the desired properties while selecting drug molecules and other bio-actives for product development. Often solubility of a drug determines its pharmaceutical and therapeutic performance. Majority of newly synthesized drug molecules fail or are rejected during the early phases of drug discovery and development due to their limited solubility. Sufficient permeability, aqueous solubility and physicochemical stability of the drug are important for achieving adequate bioavailability and therapeutic outcome. A number of different approaches including co-solvency, micellar solubilization, micronization, pH adjustment, chemical modification, and solid dispersion have been explored toward improving the solubility of various poorly aqueous-soluble drugs. Dendrimers, a new class of polymers, possess great potential for drug solubility improvement, by virtue of their unique properties. These hyper-branched, mono-dispersed molecules have the distinct ability to bind the drug molecules on periphery as well as to encapsulate these molecules within the dendritic structure. There are numerous reported studies which have successfully used dendrimers to enhance the solubilization of poorly soluble drugs. These promising outcomes have encouraged the researchers to design, synthesize, and evaluate various dendritic polymers for their use in drug delivery and product development. This review will discuss the aspects and role of dendrimers in the solubility enhancement of poorly soluble drugs. The review will also highlight the important and relevant properties of dendrimers which contribute toward drug solubilization. Finally, hydrophobic drugs which have been explored for dendrimer assisted solubilization, and the current marketing status of dendrimers will be discussed.

Background & objectives:Substance abuse is found worldwide including among students. We carried out this study to estimate the prevalence of substance abuse among medical student studying in a medical college in north India.Methods:Using a validated questionnaire a cross-sectional survey was conducted among 230 undergraduate and postgraduate medical students in a private medical college.Results:The prevalence of substance abuse was 20.43 per cent (47/230) among medical students. An increase in substance abuse was observed in the latter years of medical education. A total of 43 of 47 (91.7%) students using these substances were aware of the ill effects. The most common reasons for substance use were relief from psychological stress (34/47, 72.4%) and occasional celebration (34/47, 72.4%). Of the 47 substance users, 28 (59.6%) made past attempts to quit the substance abuse.Interpretation & conclusions:Nearly one-fifth of medical students abuse at least one substance despite knowing the ill effects with the main predisposing factor being the psychological stress.

Concurrence of emphysematous pyelonephritis and emphysematous cholecystitis in a patient with type 2 diabetes has not been reported in the published literature, to the authors' knowledge. A patient who had both at the time of presentation is reported. The mechanism of gas formation and the management strategies are discussed.

The aim of this prospective study was to assess the knowledge and attitude of women towards the Pap smear. It was carried out on the women coming to the Department of Obstetrics and Gynaecology at our University, with the help of a pre-formed questionnaire. We found that only 33% of the women were aware of the Pap smear, and of these hardly (10%) had the correct information. Sixty-five percent of the women said that they would have gotten the Pap smear done, if they had known about it earlier. Unless this knowledge amongst women is improved and their attitude is changed, the indices of cervical cancer cannot be improved. Impact statement What is already known on this subject? A Pap smear is used as a screening test to detect not only early stages of cervical cancer but also the precancerous conditions. A Pap smear is done every three years for routine screening, or every five years along with an HPV DNA test. What do the results of this study add? Despite the efforts from the medical fraternity and governments, the number of women undergoing this test in Uttar Pradesh is very minimal. This study analysed the knowledge and attitude of women towards the Pap smear. What are the implications of these findings for clinical practice and/or further research? The results have brought into light the many factors hindering an effective cervical cancer screening in India. Further actions need to be directed in the direction to address these issues.

A 54-year-old-man underwent trabeculectomy with mitomycin-C (0.02%). At 4-week follow-up, there was an elevated, well-circumscribed bleb with raised intra-ocular pressure (IOP) of 32-mmHg, with a classic “ring of steel” appearance, typically seen in a tenon's cyst. A sub-tenon needle revision re-established aqueous flow. Two weeks later, the IOP was 8-mmHg without any anti-glaucoma medications. A diffuse well formed bleb was noted. Careful ocular examination helps to identify early post-operative localized bleb that may appear like a “ring of steel” but can be managed by needling, unlike a tenon's cyst, which would require more extensive intervention.