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RISS 인기검색어
- 검색키워드
- 저자 : Pragya Shrestha (검색결과 2 건)
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Variations in human pulmonary fissures and lobes:
Sudikshya KC,Pragya Shrestha,Aashish Kumar Shah,Arvind Kumar Jha 대한해부학회 2018 Anatomy & Cell Biology Vol.51 No.2
The fissures of lungs are embryologically separating the bronchopulmonary segments, which later on persist in interlobar planes of fully developed lung. Fifty lungs (23 right side and 27 left side), obtained during routine dissection and preserved in formalin constituted the material for present study. In them, variations in fissures and lobes of lung were observed and compared with the previous studies. Seven right sided and 14 left sided lungs showed incomplete oblique fissure. Incomplete horizontal fissure of right lung was observed in eight lungs while it was completely missing in three specimens. A right lung with “lobe of the azygos vein” separated by a supernumerary fissure in medial surface was found. One of the right lung had both superior accessory fissure and inferior accessory fissure and four other right lungs and one left lung presented only with inferior accessory fissure. A vertical notch was found in middle lobe of one right lung. Eight left lungs exhibited with left minor fissure among them two lungs had lingula appearing as a separate lobe. Knowledge of variations in fissures and lobes is of interest to all medical professionals to exactly interpret radiographs, computed tomography scans, to diagnose, plan and modify a surgical procedure depending on the merit of the case and also in certain classical clinical cases pertaining to lung pathologies.
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Ravi Bhattarai,Rocky Thapaliya,Kailash Shrestha,Asmita Sharma,Neelam Dhakal,Pragya Manandhar,Sahana Shrestha 한국약제학회 2019 Journal of Pharmaceutical Investigation Vol.49 No.5
Colon targeted pulsatile drug delivery system of naproxen microcrystals (NMs) was developed using pulsincap technique in order to match release of drug with circadian rhythm of the clinical symptoms of rheumatoid arthritis. NMs were prepared by anti-solvent precipitation method using various solubilizers, viz, sodium lauryl sulfate (SLS), hydroxy propyl methyl cellulose (HPMC K4M), polyvinylpyrrolidone (PVP K-30) and polyethylene glycol (PEG 6000) in order to enhance solubility of drug. Solubility analysis revealed SLS and HPMC K4M as suitable solubilizers for improving solubility of drug. Thus, NMs embedded with same solubilizers at 0.01% w/w were subjected for further evaluation. Particle size, surface morphology, degree of crystallinity and purity were determined for NMs. Pulsincap formulations were prepared by incorporating granulates of NMs inside formaldehyde treated body of hard gelatin capsules which were plugged using HPMC K15M at various concentrations. Drug release studies were performed in simulated gastric, intestinal and colonic fluid for 2, 4 and 2.5 h respectively in a successive manner. In vitro release data revealed that a capsule containing 35 mg of HPMC K15M exhibited complete drug release after lag time of 6 h. HPMC K4M as superior solubility enhancer for naproxen in multiparticulate microcrystals was also revealed from release studies.
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