26
|
Skrinar A, Argov Z, Caraco Y, Kolodny E, Lau H, Pestronk A, Shieh P, Bronstein F, Esposito A, Feinsod-Meiri Y, Florence J, Fowler E, Greenberg M, Malkus E, Rebibo O, Siener C, Mayhew J. P.3.1 GNE myopathy functional activity scale (GNEM-FAS): Development of a disease-specific instrument for measuring function and independence. Neuromuscul Disord 2013. [DOI: 10.1016/j.nmd.2013.06.426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
27
|
Clayton R, Liu H, Lau H, Dunscombe P, Nugent Z, Khan R. Clinical Impact and Utility of Acuros XB Dose Calculation Algorithm in Lung Stereotactic Body Radiation Therapy. Int J Radiat Oncol Biol Phys 2013. [DOI: 10.1016/j.ijrobp.2013.06.1916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
28
|
Maniscalco B, Lau H. Dissociations and suboptimalities in metacognitive performance due to unbalanced weighting of perceptual evidence can be partially remediated by task instruction and performance feedback. J Vis 2013. [DOI: 10.1167/13.9.428] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
29
|
Solovey G, Maniscalco B, Rahnev D, Lau H. Inflation of subjective perception in peripheral vision. J Vis 2013. [DOI: 10.1167/13.9.621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
30
|
Lau H, Maniscalco B. Short-term fatigue of perceptual decision making and metacognition. J Vis 2013. [DOI: 10.1167/13.9.647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
31
|
Koizumi A, Maniscalco B, Apple A, Yan X, Lau H. The effects of metacognitive awareness on top-down cognitive control. J Vis 2013. [DOI: 10.1167/13.9.429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
32
|
Hourigan SK, Anders RA, Mitchell SE, Schwarz KB, Lau H, Karnsakul W. Chronic diarrhea, ascites, and protein-losing enteropathy in an infant with hepatic venous outflow obstruction after liver transplantation. Pediatr Transplant 2012; 16:E328-31. [PMID: 22489846 PMCID: PMC3568531 DOI: 10.1111/j.1399-3046.2012.01686.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An 18-month-old female status post-orthotopic liver transplant for biliary atresia presented nine months after transplant with severe diarrhea and intolerance of feeds. She was found to have a PLE as evidenced by a low serum albumin and a persistent elevation of fecal A1AT. Investigation eventually revealed that the cause of the PLE was a stricture at the anastomosis site between the hepatic vein and inferior cava, supported by resolution of the PLE after venoplasty of the stricture. The patient has subsequently required several repeat venoplasties for recurrence of her symptoms correlating with recurrence of the stricture. This is a very rare presentation of hepatic venous outflow obstruction. Moreover, normal duplex ultrasound imaging of liver vasculature and her unusual presentation led to a delay in her diagnosis highlighting the need for an increased index of suspicion.
Collapse
|
33
|
Chen N, Kasserra C, Reyes J, Liu L, Lau H. Single-dose pharmacokinetics of lenalidomide in healthy volunteers: dose proportionality, food effect, and racial sensitivity. Cancer Chemother Pharmacol 2012; 70:717-25. [PMID: 22955172 DOI: 10.1007/s00280-012-1966-z] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2012] [Accepted: 08/12/2012] [Indexed: 11/29/2022]
Abstract
PURPOSE Lenalidomide is an immunomodulatory drug with efficacy in various hematological malignancies. The purpose of these studies was to evaluate the single-dose pharmacokinetics of lenalidomide, including dose proportionality, food effect, and racial sensitivity. METHODS Three studies were conducted including a total of 58 healthy subjects: a randomized, single-blind, alternating group, single-ascending dose study; a randomized, two-way crossover food effect study; and a randomized, double-blind, two-group, within-subject, single-ascending dose study. RESULTS Oral absorption of lenalidomide was rapid and the maximum plasma concentration (C (max)) was observed approximately 1 h post-dose. Co-administration with a high-fat meal reduced the area under the concentration-time curve (AUC) and C (max) by approximately 20 and 50 %, respectively, and delayed time to C (max) (t (max)) by 1.63 h. However, phase III trials were dosed without regard to food; therefore, clinical relevance of the food effect was minimal. The terminal elimination half-life (t (½)) was 3-4 h at doses up to 50 mg and was not affected by food. The AUC and C (max) were proportional to lenalidomide single doses (5-400 mg), and total and renal clearance were dose-independent. The R- to S-lenalidomide ratio in plasma was stable over time, approximately 45-55 % of total drug. There were no differences in pharmacokinetic parameters, dose-exposure relationship, or enantiomeric ratio, between Japanese and Caucasian subjects. CONCLUSION Lenalidomide displayed linear pharmacokinetics from doses 5-400 mg in healthy subjects. Although food reduced bioavailability, this was not considered clinically relevant. Lenalidomide was generally well tolerated in both ethnic groups.
Collapse
|
34
|
Rahnev D, Maniscalco B, Lau H. Direct injection of neural noise leads to double dissociation between accuracy and confidence. J Vis 2012. [DOI: 10.1167/12.9.617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
35
|
Lau H, Morales J, Rahnev D. Violation of Bayesian Cue Integration Principle Under Attentional Cuing. J Vis 2012. [DOI: 10.1167/12.9.127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
36
|
Karnsakul W, Intihar P, Konewko R, Roy A, Colombani PM, Lau H, Schwarz KB. Living donor liver transplantation in children: a single North American center experience over two decades. Pediatr Transplant 2012; 16:486-95. [PMID: 22672018 DOI: 10.1111/j.1399-3046.2012.01725.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Little data concerning hospital charges and long-term outcomes of LDLT in North American children according to transplant indications have been published. To compare outcomes of patient and graft survival and healthcare charges for LDLT for those with BA vs. other diagnoses (non-BA). A retrospective review of 52 children receiving 53 LDLT (38 BA and 14 non-BA) from 1992 to 2010 at our institution was performed. One-, five-, and 10-yr patient and graft survival data were comparable to national figures reported to UNOS. Average one-yr charges for recipients and donors were $242 849 for BA patients and $183 614 for non-BA (p = 0.074). BA patients were 1.23 ± 1.20 yr of age vs. 4.25 ± 5.02 for non-BA, p = 0.045. Examination of the total population of patients who were alive in 2010 in five chronological groupings showed that the crude five-yr survival rates were 1992-1995: 9/11 (82%); 1995-1997: 6/10 (60%); 1997-1999: 8/10 (80%); 1999-2001: 9/10 (90%); and 2001-2003: 7/7 (100%). Thus, examination of the clinical and financial data together over the entire period of the transplant program suggests that the dramatic improvement in patient survival was accomplished without a dramatic increase in indexed charges. All 53 donors survived, and only 10% had complications requiring hospitalization. LDLT in children results in excellent outcomes for patients and donors. Ways to lower costs and maximize graft outcome should be investigated.
Collapse
|
37
|
Cervantes-Arslanian AM, Lau H, Romero J, Nguyen T, Babikian V, Kase C, Pikula A. Risk Factor Profile of HIV Patients with Ischemic Stroke (P01.244). Neurology 2012. [DOI: 10.1212/wnl.78.1_meetingabstracts.p01.244] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
|
38
|
Lau H, Rahnev D. The paradoxical negative relationship between attention-related spontaneous neural activity and perceptual decisions. J Vis 2011. [DOI: 10.1167/11.11.20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
39
|
|
40
|
Davidson M, Felsovalyi O, Trongnetrpunya A, Wang X, Lau H, Thesen T. Different physiological correlates for perceptual decisions and confidence ratings support multi-stage theories. J Vis 2011. [DOI: 10.1167/11.11.879] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
41
|
Maniscalco B, Lau H. On a distinction between detection and discrimination: metacognitive advantage for signal over noise. J Vis 2011. [DOI: 10.1167/11.11.163] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
42
|
Schirmer SU, Eckhardt I, Lau H, Klein J, DeGraaf YC, Lips KS, Pineau C, Gibbins IL, Kummer W, Meinhardt A, Haberberger RV. The cholinergic system in rat testis is of non-neuronal origin. Reproduction 2011; 142:157-66. [DOI: 10.1530/rep-10-0302] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
The cholinergic system consists of acetylcholine (ACh), its synthesising enzyme, choline acetyltransferase (CHAT), transporters such as the high-affinity choline transporter (SLC5A7; also known as ChT1), vesicular ACh transporter (SLC18A3; also known as VAChT), organic cation transporters (SLC22s; also known as OCTs), the nicotinic ACh receptors (CHRN; also known as nAChR) and muscarinic ACh receptors. The cholinergic system is not restricted to neurons but plays an important role in the structure and function of non-neuronal tissues such as epithelia and the immune system. Using molecular and immunohistochemical techniques, we show in this study that non-neuronal cells in the parenchyma of rat testis express mRNAs forChat,Slc18a3,Slc5a7andSlc22a2as well as for the CHRN subunits in locations completely lacking any form of innervation, as demonstrated by the absence of protein gene product 9.5 labelling. We found differentially expressed mRNAs for eight α and three β subunits of CHRN in testis. Expression of the α7-subunit of CHRN was widespread in spermatogonia, spermatocytes within seminiferous tubules as well as within Sertoli cells. Spermatogonia and spermatocytes also expressed the α4-subunit of CHRN. The presence of ACh in testicular parenchyma (TP), capsule and isolated germ cells could be demonstrated by HPLC. Taken together, our results reveal the presence of a non-neuronal cholinergic system in rat TP suggesting a potentially important role for non-neuronal ACh and its receptors in germ cell differentiation.
Collapse
|
43
|
Jagdis A, Phan T, Klimowicz AC, Laskin JJ, Lau H, Petrillo SK, Siever JE, Thomson TA, Magliocco AM, Hao D. ERCC1 and XPF protein expression in patients with nasopharyngeal carcinoma (NPC) undergoing curative intent radiation with or without platinum chemotherapy. J Clin Oncol 2011. [DOI: 10.1200/jco.2011.29.15_suppl.5587] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
|
44
|
El Ouagari K, Migliaccio-Walle K, Lau H, Bozkaya D. 343 Cost-effectiveness of deferasirox in lower-risk myelodysplastic syndrome (MDS) in Canada. Leuk Res 2011. [DOI: 10.1016/s0145-2126(11)70345-9] [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]
|
45
|
Al-Barrak J, Santos JL, Tinker A, Hoskins P, Gilks CB, Lau H, Swenerton KD. Exploring palliative treatment outcomes in women with advanced or recurrent ovarian clear cell carcinoma. Gynecol Oncol 2011; 122:107-10. [PMID: 21463887 DOI: 10.1016/j.ygyno.2011.03.011] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Revised: 03/09/2011] [Accepted: 03/11/2011] [Indexed: 11/19/2022]
Abstract
OBJECTIVE Clear cell carcinoma (CCC) of the ovary is increasingly recognized as responding poorly to chemotherapy (CT). This review examines the outcomes achieved with a variety of CT regimens, looking for evidence of activity that might guide the development of more effective treatments. METHODS A retrospective chart review of all cases of CCC referred to the BC Cancer Agency (BCCA) between 2000 and 2008 was conducted. Data were collected from those with primarily advanced disease and from those who recurred after adjuvant treatment. Outcomes were measured using broad definitions of treatment benefit (any objective or subjective evidence of disease control) in order to reflect the real-life use of palliative therapy. RESULTS There were 158 women with pure CCC. First-line therapy for advanced disease was delivered to 33 patients. Second- and third-line treatment was delivered to 47 and 25 patients, respectively. The total number of treatment courses was 105: 88 CT-alone courses, 14 radiation therapy (RT)-alone and 3 combined modality. Treatment benefit was recorded in 24% of patients receiving CT, 64% of patients receiving RT, and each who received combined modality treatment. There was no CT drug class identified as obviously efficacious. CONCLUSION Most patients with advanced or recurrent CCC have a low benefit-to-failure ratio from palliative CT. The role of RT and targeted agents must be explored to improve clinical outcomes for such patients.
Collapse
|
46
|
Vupputuri S, Nichols GA, Lau H, Joski P, Thorp ML. Risk of progression of nephropathy in a population-based sample with type 2 diabetes. Diabetes Res Clin Pract 2011; 91:246-52. [PMID: 21156326 DOI: 10.1016/j.diabres.2010.11.022] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2010] [Revised: 10/14/2010] [Accepted: 11/16/2010] [Indexed: 10/18/2022]
Abstract
AIMS Progression through stages of nephropathy has not been well described in a large, well-characterized, population-based study. Our aims were to describe the progression of nephropathy and identify characteristics associated with progression in a U.S. population-based sample. METHODS We identified 10,290 members of a managed care organization who had hypertension and type 2 diabetes, a urine albumin-to-creatinine ratio (UACR) measurement in 2001-2003, and at least 2 follow-up UACRs. Progression of nephropathy was defined as progression to a higher stage of nephropathy than was present at baseline. RESULTS At baseline, 57% had normoalbuminuria, 31% had microalbuminuria, and 12% had macroalbuminuria. The incidence of nephropathy progression (per 1000 person-years) was 94.7, 35.1, and 6.5 for normo-, micro-, and macro-albuminuria, respectively. ACEi/ARB use ranged from 61-67%, except among patients with macroalbuminuria at follow-up. Age, diabetes duration, and A1C were significant predictors of progression. CONCLUSIONS Our study, one of the first to examine the progression of nephropathy in a U.S. population-based sample, showed that among adults with diabetes and hypertension, the burden of nephropathy and its progression may be greater than previously reported. Further, the use of ACEi/ARBs was not optimal.
Collapse
|
47
|
Brunet B, Newcomb C, Lau H, Craighead P, Danielson B. Patterns of Referral for Stereotactic Radiosurgery for Patients with Brain Metastases in Alberta, Canada. Int J Radiat Oncol Biol Phys 2010. [DOI: 10.1016/j.ijrobp.2010.07.1342] [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]
|
48
|
Maniscalco B, Rounis E, Rothwell JC, Passingham RE, Lau H. Theta-burst transcranial magnetic stimulation to the prefrontal cortex impairs metacognitive visual awareness. J Vis 2010. [DOI: 10.1167/9.8.764] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
49
|
Rahnev D, Bahdo L, Munneke M, de Lange F, Lau H. Theta-burst transcranial magnetic stimulation to V1 impairs subjective confidence ratings and metacognition. J Vis 2010. [DOI: 10.1167/10.7.901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
50
|
Davidson M, Persaud N, Maniscalco B, Mobbs D, Passingham R, Cowey A, Lau H. Awareness-related activity in prefrontal and parietal cortices reflects more than superior performance capacity: A blindsight case study. J Vis 2010. [DOI: 10.1167/10.7.897] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|