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  1. Dar MJ, Ali H, Khan A, Khan GM
    J Drug Target, 2017 Aug;25(7):582-596.
    PMID: 28277824 DOI: 10.1080/1061186X.2017.1298601
    Colon-specific drug delivery has found important applications in the wide array of diseases affecting the lower intestinal tract. Recent developments and advancements in the polymer-based colonic delivery ensure targeted therapeutics with reduced systemic adverse effects. Latest progress in the understanding of polymer science has decorated a polymer-based formulation with a number of special features, which may prove effective in the localized drug targeting at specific sites of the intestine. Upon oral administration, polymeric vehicles or polymer-coated formulations serve to protect the drug from premature release and degradation in the upper gastrointestinal tract. Moreover, it also facilitates the selective accumulation and controlled release of the drug at inflamed sites of the colon. This review article focuses on a wide coverage of major polymers, their modifications, pros and cons, mechanism of colon targeting and applications as a vehicle system for colonic drug delivery, with a special emphasis on the inflammatory bowel disease.
  2. Rehman AU, Muhammad SA, Tasleem Z, Alsaedi A, Dar M, Iqbal MO, et al.
    Sci Rep, 2021 11 19;11(1):22598.
    PMID: 34799609 DOI: 10.1038/s41598-021-01551-5
    Chronic obstructive pulmonary disease (COPD) is associated with substantial humanistic and socioeconomic burden on patients and their caregivers. COPD is expected to be 7th leading cause of disease burden till 2030. The objective of the current study was to assess the humanistic and socioeconomic burden of COPD patients and their caregivers in Malaysia. The burden includes the cost of management of COPD, QOL of COPD patients and their caregivers, work productivity and activity impairment of COPD patients and their caregivers due to COPD. One hundred and fifty COPD patients and their caregivers from the chest clinic of Penang Hospital were included in the study from August 2018 to August 2019. Caregiving cost was estimated using the replacement cost approach, while humanistic and social burden was assessed with the help of health status questionnaires. Overall, 64.66% and 7.1% of COPD patients reported to depend on informal caregivers and professional caregivers respectively. COPD patients reported dyspnoea score as 2.31 (1.31), EQ-5D-5L utility index 0.57 (0.23), CCI 2.3 (1.4), SGRQ-C 49.23 (18.61), productivity loss 31.87% and activity impairment 17.42%. Caregivers reported dyspnoea score as 0.72 (0.14), EQ-5D-5L utility index 0.57 (0.23), productivity loss 7.19% and social activity limitation as 21.63% due to taking care of COPD patients. In addition to the huge direct cost of management, COPD is also associated with substantial burden on society in terms of compromised quality of life, reduced efficiency at the workplace, activity impairment and caregiver burden.
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