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Stock-Myer S, Twomey A, Tang P, Kohfahl A, Wilton L. O-6 Haplotype determination for PGD using flow sorted single chromosomes. Reprod Biomed Online 2013. [DOI: 10.1016/s1472-6483(13)60039-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
This paper analyses candidate performance in the three components of the MRCP(UK) examination to establish when they are most likely to pass. Using data from the 2010 and 2011 MRCP(UK) examinations, pass rates of candidates who gained their primary medical qualification (PMQ) in 2005 or later were analysed. Results from a total of 22,827 candidates were included in the study: 12,517 (54.8%) from Part 1, 5,545 (24.3%) from Part 2 written and 4,765 (20.9%) from the Part 2 practical assessment of clinical examination skills (PACES). The results show that candidates are more likely to pass Part 1 and Part 2 written 12-24 months after graduation and to pass Part 2 PACES 25-36 months after graduation. When we consider the training programme for physicians in the UK, successful candidates are likely to be in foundation programmes or early core or specialty training when they achieve success. At the moment, some candidates are dissuaded from taking the examination during their foundation programme, but our data show that their likelihood of success is highest during this period of training. The analysis also shows that for candidates who fail their first attempt, delaying their next attempt by one diet significantly increases the likelihood of them passing at their next attempt.
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Zhang J, Chang CZ, Tang P, Zhang Z, Feng X, Li K, Wang LL, Chen X, Liu C, Duan W, He K, Xue QK, Ma X, Wang Y. Topology-Driven Magnetic Quantum Phase Transition in Topological Insulators. Science 2013; 339:1582-6. [DOI: 10.1126/science.1230905] [Citation(s) in RCA: 179] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Wang W, Zhang S, Yang J, Zheng J, Ding X, Chou M, Tang P, Zhan X. Effects of Distribution Channel Dimensions on Flow Distribution and Pressure Drop in a Plate-Fin Heat Exchanger. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201200584] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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80
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Tang P, Gao C, Li A, Aster J, Sun L, Chai L. Differential roles of Kras and Pten in murine leukemogenesis. Leukemia 2012. [PMID: 23183424 DOI: 10.1038/leu.2012.316] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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81
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Gijsen M, Tang P, Leung W, Roxanis I, Kong A. 24P PTPN9 is a Negative Regulator of HER3 Phosphorylation and a Prognostic Biomarker in HER2 Positive Breast Cancer. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(19)65669-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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82
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Wilton L, Twomey A, Martic M, Kohfahl A, Tang P. SESSION 10: FSA EXCHANGE LECTURE. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.10] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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83
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Jiang J, Jiang J, Pan Y, Wang R, Tang P. Investigation on Thermal Runaway in Batch Reactors by Parametric Sensitivity Analysis. Chem Eng Technol 2011. [DOI: 10.1002/ceat.201000517] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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84
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Prakoso E, Verran D, Dilworth P, Kyd G, Tang P, Tse C, Koorey DJ, Strasser SI, Stormon M, Shun A, Thomas G, Joseph D, Pleass H, Gallagher J, Allen R, Crawford M, McCaughan GW, Shackel NA. Increasing liver transplantation waiting list mortality: a report from the Australian National Liver Transplantation Unit, Sydney. Intern Med J 2011; 40:619-25. [PMID: 20840212 DOI: 10.1111/j.1445-5994.2010.02277.x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
BACKGROUND We aimed to describe the demand for liver transplantation (LTx) and patient outcomes on the waiting list at the Australian National Liver Transplantation Unit, Sydney over the last 20 years. METHODS We performed a retrospective analysis with the data divided into three eras: 1985-1993, 1994-2000 and 2001-2008. RESULTS The number of patients accepted for LTx increased from 320 to 372 and 548 (P < 0.001) with the number of LTx being performed increasing from 262 to 312 and 452 respectively (P < 0.001). The median adult recipient age increased from 45 to 48 and 52 years (P < 0.001) while it decreased in children from 4 to 2 and 1 years respectively (P = 0.001). In parallel, the deceased donor offers decreased from 1003 to 720 and 717 (P < 0.001). Methods to improve access to donor livers have been used with the use of split livers, extended criteria and non-heart beating donors, resulting in increased acceptance of deceased donor offers by 65% and 115% in the second and third eras when compared with the first era (P < 0.001). However, the adult median waiting time has increased from 23 to 41 and 120 days respectively (P < 0.001). This was associated with increased adult mortality on the waiting list from 23 to 40 and 122 respectively (P < 0.001). CONCLUSIONS Despite the increasing proportion of donor offers being used, the waiting list mortality is increasing. A solution to this problem is an increase in organ donation to keep pace with the escalating demand for LTx.
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Chan WW, Murray MC, Tang P, Romney MG. Mycobacterium heckeshornense peritonitis in a peritoneal dialysis patient: a case report and review of the literature. Clin Microbiol Infect 2011; 17:1262-4. [PMID: 21375651 DOI: 10.1111/j.1469-0691.2010.03449.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We report the first case of peritonitis attributed to Mycobacterium heckeshornense. This is a rare, non-tuberculous mycobacterium that has been reported as an aetiological agent in a growing number and widening spectrum of infections.
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86
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Lin Y, Hatem J, Wang J, Quinn A, Hicks DG, Tang P. Tissue microarray-based immunohistochemical study can significantly underestimate the expression of HER2 and progesterone receptor in ductal carcinoma in situ of the breast. Biotech Histochem 2010; 86:345-50. [DOI: 10.3109/10520295.2010.502845] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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87
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Tang P, Puri VM. Percolation Segregation Model for Similar and Differing Constituents. PARTICULATE SCIENCE AND TECHNOLOGY 2010. [DOI: 10.1080/02726351.2010.496295] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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88
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Caire AA, Sun L, Lack BD, Lum K, Tang P, Stackhouse DA, Robertson CN, Mouraviev V, Polascik TJ, Albala DM, Moul JW. Predicting non-organ-confined prostate cancer in men diagnosed after 2000. Prostate Cancer Prostatic Dis 2010; 13:248-51. [DOI: 10.1038/pcan.2010.15] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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89
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Roldan GB, Koro K, Klimowicz A, Petrillo S, Yau A, Tang P, Magliocco AM. Prognostic value of Gli1 expression and its association with hormone receptors in localized breast cancer. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e21041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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90
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Bhaskarla A, Tang P, Mashtare T, Demmy T, Nwogu C, Adjei A, Reid M, Yendamuri S. Synchronous Non Small Cell Lung Cancers Should Not Be Classified as Stage IV - A Seer Database Analysis. J Surg Res 2010. [DOI: 10.1016/j.jss.2009.11.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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91
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Chen C, Tang P, Yue J, Ren P, Liu X, Zhao X, Yu Z. Effect of siRNA targeting HIF-1alpha combined L-ascorbate on biological behavior of hypoxic MiaPaCa2 cells. Technol Cancer Res Treat 2009; 8:235-40. [PMID: 19445542 DOI: 10.1177/153303460900800309] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The aim of the study was to observe the effect of small interference RNA (siRNA) targeting hypoxia-inducible factor 1alpha (HIF-1alpha) combined L-ascorbate on proliferation, migration, and apoptosis of hypoxic MiaPaCa2 human pancreatic cancer cells. A cassette encoding siRNA targeting HIF-1alpha mediated by recombinant adeno-associated virus (rAAV) was constructed, giving rAAV-siHIF. rAAV-siHIF and L-ascorbate, which were used alone or in combination, were delivered to exponentially growing MiaPaCa2 cells under hypoxic conditions. Then, we observed the expression of HIF-1alpha mRNA and protein, the proliferation, apoptosis, and migration of MiaPaCa2 cells by real-time PCR, Western blot, MTT, TUNEL, and Transwell assay, respectively. Under hypoxic conditions, rAAV-siHIF inhibited the expression of HIF-1alpha mRNA in MiaPaCa2 cells but L-ascorbate did not. However, rAAV-siHIF and L-ascorbate both inhibited the expression of HIF-1alpha protein and the proliferation and migration of MiaPaCa2 cells and induced MiaPaCa2 cell apoptosis. The effect in the combined group was more efficient than that seen when rAAV-siHIF or L-ascorbate was used separately. rAAV-siHIF and L-ascorbate both affect biological behavior of hypoxic MiaPaCa2 cells through modulating HIF-1alpha protein expression and rAAV-siHIF and L-ascorbate have synergy under hypoxic conditions.
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92
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Tang P, Auk B, Crisp S, Montoya V, Fung J, McNabb A, Isaac-Renton J. O22 Molecular epidemiology of noroviruses in British Columbia, Canada. Int J Antimicrob Agents 2009. [DOI: 10.1016/s0924-8579(09)70169-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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93
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Kim E, Eisler D, So S, McNabb A, Petric M, Tang P. P228 Identification of a novel human parechovirus. Int J Antimicrob Agents 2009. [DOI: 10.1016/s0924-8579(09)70447-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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94
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Tan K, Adie K, Tan R, McNabb A, Tang P. P197 Molecular detection and monitoring of disseminated Adenovirus infection in a hematopoietic stem cell transplant recipient by real-time PCR. Int J Antimicrob Agents 2009. [DOI: 10.1016/s0924-8579(09)70416-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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95
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Montoya V, Eisler D, McNabb A, Isaac-Renton J, Tang P. P202 Implementation of a pan-viral microarray for detection of viruses in clinical samples. Int J Antimicrob Agents 2009. [DOI: 10.1016/s0924-8579(09)70421-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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96
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Brooke R, Tang P, Mak A, Grebely J, Adie K, Danta M, Spinelli J, Andonov A, Krajden M. P214 Molecular epidemiology of newly acquired hepatitis C virus (HCV) infections in British Columbia. Int J Antimicrob Agents 2009. [DOI: 10.1016/s0924-8579(09)70433-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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97
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Moore MJ, Tang P, Renouf D, Major P, Hedley D, Paterson V, Wang L, Dhesy-Thind B, Southwood B, Doyle L. A phase II study of Halichondrin B analog eribulin mesylate (E7389) as second-line therapy for patients with advanced pancreatic cancer. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.e15634] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
e15634 Background: Eribulin mesylate is a halichondrin B analog that inhibits microtubule dynamics by a mechanism that is distinct from other tubulin-targeted agents. Preclinical studies suggest that Eribulin may be effective in pancreatic cancer. The primary objective of this study was to determine the objective response rate (complete and partial) to Eribulin in patients with advanced, pancreatic adenocarcinoma that had progressed after gemcitabine based therapy. Methods: Eligibility criteria included histologically confirmed pancreatic adenocarcinoma; measurable locally advanced, or metastatic disease; disease progression after gemcitabine; and ECOG performance status 0–2. Patients (pts) received Eribulin mesylate 1.4 mg/m2 IV on days 1 and 8. Treatment was repeated every 3 weeks in the absence of disease progression or unacceptable toxicity. Response was assessed by CT scans every 6 weeks while on treatment. Initially 12 pts were to be accrued, if 1 or more pt(s) had an objective response the accrual would increase to a total of 37. Results: 15 pts were accrued,14 received treatment and 12 were evaluable for response. Median age 61; M:F = 8:7; ECOG 1:2 = 11:4; Median number of cycles 2 (1–15). Grade 3+ adverse events included neutropenia (29%), fatigue (14%), peripheral neuropathy (7%) and thrombosis (7%). There were no complete or partial responses, and therefore the study was closed at the first accrual cut off. The best response was stable disease (SD) in 5/12 (42%) pts. Of these 5 pts, 3 (42%) had SD for 12 cycles or greater. Survival data is pending. Conclusions: Eribulin was well tolerated and did not result in any objective responses in refractory pancreatic cancer. However, 42% of pts had stable disease and for 3 pts this was maintained for more than 9 months. Further studies of eribulin in pancreatic cancer may be warranted. No significant financial relationships to disclose.
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Tang P, Gill S, Au HJ, Chen EX, Hedley D, Leroux M, Wang L, Moore MJ. Phase II trial of erlotinib in advanced pancreatic cancer (PC). J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.4609] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4609 Background: The epidermal growth factor receptor (EGFR) is a potentially important target in PC. Benefit from erlotinib (Tarceva), an oral EGFR tyrosine kinase inhibitor has been associated with the presence of a skin rash. The purpose of this study was to determine the efficacy of erlotinib, dosed to achieve a rash, in patients (pts) with PC. Methods: Erlotinib was given at an initial dose of 150 mg/day to eligible pts with locally advanced (LA) or metastatic PC who had progressed or were unable to tolerate gemcitabine-based chemotherapy. The dose of erlotinib was increased by 50mg every 2 weeks (maximum 300 mg/day) until > grade 1 rash (CTCAE v 3.0) or other dose-limiting toxicities occurred. Erlotinib pharmacokinetic (PK) studies were performed. Baseline tumor tissue was collected for analysis of Kras mutations, EGFR by IHC and FISH. The primary endpoint of this two- stage phase II trial was prolonged disease control (PR + SD > 8 wks) with a rate of >20% assumed to be significant . Results: Fifty pts were accrued (median age 61, M:F = 25:25, ECOG 0:1:2 = 5:41:4, LA:Metastatic = 5:45, prior gemcitabine none:adjuvant:palliative = 2:16:35). 47 and 40 pts were evaluable for toxicity and response, respectively. Dose-escalation to 200–300 mg of erlotinib was possible in 9 pts. Most common treatment adverse events (TAEs) of any grade were: rash (35 pts, 74.5%), diarrhea (18 pts, 38.3 %), and fatigue (8 pts, 17%). Grade 3+ TAEs were rash in 2 pts and diarrhea in 2 pts. Best response was SD in 14 pts, 0.35 (95% CI: 0.2–0.5). Prolonged disease control (SD > 8 wks) was observed in 10/40 evaluable pts, 0.25 (95% CI: 0.12–0.38), which met the primary study endpoint. Median TTP was 1.6 mo (95% CI:1.6–2.1), mOS 4.1 mo (95% CI:3.2–7.3), and 6 mo OS rate was 39% (95%CI: 24–61%). PK and correlative data are being analyzed and will be presented. Conclusions: Erlotinib is associated with prolonged stable disease in a subset of pts with advanced refractory PC. Dose escalation in the absence of toxicity is feasible and safe. [Table: see text]
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Tang P, Fletcher D, Chan HK, Raper J. Simple and cost-effective powder disperser for aerosol particle size measurement. POWDER TECHNOL 2008. [DOI: 10.1016/j.powtec.2008.01.003] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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100
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Tang P, Chan HK, Chiou H, Ogawa K, Jones MD, Adi H, Buckton G, Prud'homme RK, Raper JA. Characterisation and aerosolisation of mannitol particles produced via confined liquid impinging jets. Int J Pharm 2008; 367:51-7. [PMID: 18848874 DOI: 10.1016/j.ijpharm.2008.09.024] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2008] [Revised: 09/12/2008] [Accepted: 09/12/2008] [Indexed: 10/21/2022]
Abstract
Mannitol particles, produced by spray drying (SD), have been used commercially (Aridol) in bronchial provocation test. In this study, we propose an alternative method to produce inhalable mannitol powders. The elongated mannitol particles (number median length 4.0microm, and axial ratio of 3.5) were prepared using a confined liquid impinging jets (CLIJs) followed by jet milling (JM). Spray dried and jet milled raw mannitol particles were compared in an attempt to assess the performance of the particles produced by the new method. Aerosol performance of the three different powders (CLIJ, SD, and JM) was relatively poor (fine particle fraction or FPF(loaded) below 15%) when dispersed by the Rotahaler. Dispersion through the Aeroliser led to better aerosol performance of the CLIJ mannitol (FPF(loaded) 20.3%), which is worse than the JM (FPF(loaded) 30.3%) and SD mannitol particles (FPF(loaded) 45.7%) at 60 L/min, but comparable (FPF(loaded) 40.0%) with those of the JM (FPF(loaded) 40.7%) and SD (FPF(loaded) 45.5%) powders at 100L/min. Hence, the optimum use of these elongated mannitol particles can be achieved at increased air flow with a more efficient inhaler. In addition to crystallinity, morphology, and particle size distribution, the surface energies of these powders were measured to explain the differences in aerosol performance. A major advantage of using the CLIJ method is that it can be scaled up with a good yield as the precipitate can be largely collected and recovered on a filter, compared with spray drying which has a low collection efficiency for fine particles below 2microm.
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