9 results on '"Crinis N"'
Search Results
2. Association between severe pandemic 2009 influenza A (H1N1) virus infection and immunoglobulin G2 subclass deficiency
- Author
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Gordon, C.L., Johnson, P.D.R., Permezel, M., Holmes, N.E., Gutteridge, G., McDonald, C.F., Eisen, D.P., Stewardson, A.J., Edington, J., Charles, P.G.P., Crinis, N., Black, M.J., Torresi, J., and Grayson, M.L.
- Subjects
Swine influenza -- Risk factors ,Swine influenza -- Development and progression ,Swine influenza -- Research ,Immunoglobulin G -- Physiological aspects ,Immunoglobulin G -- Research ,Health ,Health care industry - Published
- 2010
3. Circulating SPINT1 is a biomarker of pregnancies with poor placental function and fetal growth restriction
- Author
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Kaitu'u-Lino, TJ, MacDonald, TM, Cannon, P, Tuong-Vi, N, Hiscock, RJ, Haan, N, Myers, JE, Hastie, R, Dane, KM, Middleton, AL, Bittar, I, Sferruzzi-Perri, AN, Pritchard, N, Harper, A, Hannan, NJ, Kyritsis, V, Crinis, N, Hui, L, Walker, SP, Tong, S, Kaitu'u-Lino, TJ, MacDonald, TM, Cannon, P, Tuong-Vi, N, Hiscock, RJ, Haan, N, Myers, JE, Hastie, R, Dane, KM, Middleton, AL, Bittar, I, Sferruzzi-Perri, AN, Pritchard, N, Harper, A, Hannan, NJ, Kyritsis, V, Crinis, N, Hui, L, Walker, SP, and Tong, S
- Abstract
Purpose To investigate the relationship between patient-reported outcome (PRO) questionnaire responses and time to late age-related macular degeneration (AMD; neovascular AMD [nAMD] or multimodal imaging [MMI]-defined atrophy) among individuals with bilateral large drusen, and the prognostic value of baseline PROs for 36-month AMD status. Design Exploratory analyses from a multicenter randomized controlled trial of an AMD intervention (Australian New Zealand Clinical Trials Registry identifier, ACTRN12612000704897). Participants Sham treatment group of the Laser Intervention in Early Stages of Age-Related Macular Degeneration (LEAD) Study (n = 141; age, 50–88 years; 77% female). Methods The 28-item Impact of Vision Impairment (IVI-28) and 10-item Night Vision Questionnaire (NVQ-10) were administered at the baseline visit. The PRO scores were derived using rating scale models. Multivariate Cox regression adjusting for demographics and clinical measures of vision (low-luminance visual acuity, low-luminance deficit, and microperimetric sensitivity) from the poorer-performing eye was used to investigate the association between PRO scores and time to late AMD in either eye. Multivariate competing-risk regression was used to estimate cause-specific subhazard ratios for nAMD and atrophy in either eye. Cross-validated logistic lasso models were used to estimate the predicted probability of AMD at 36 months. The area under the receiver operating characteristic curve was assessed to compare prognostic accuracy between models with and without PROs. Main Outcome Measure Time until nAMD or atrophy in either eye. Results The PRO scores were skewed toward higher functional vision. Higher IVI-28 scores were associated with a lower risk of progression to MMI-defined atrophy (20 events: adjusted hazard ratio, 0.65/logit increase; P = 0.002) but not nAMD (10 events; P = 0.562). Insufficient evidence was found of an association between NVQ-10 score and rate of progression to late AMD (
- Published
- 2020
4. A longitudinal study of thyroid autoantibodies in pregnancy: the importance of test timing
- Author
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Ekinci, EI, Chiu, W-L, Lu, ZX, Sikaris, K, Churilov, L, Bittar, I, Lam, Q, Crinis, N, Houlihan, CA, Ekinci, EI, Chiu, W-L, Lu, ZX, Sikaris, K, Churilov, L, Bittar, I, Lam, Q, Crinis, N, and Houlihan, CA
- Abstract
OBJECTIVE: Thyroid peroxidase antibodies (TPOAb) and thyroglobulin antibodies (TGAb) are frequently measured to investigate thyroid dysfunction in pregnancy. Despite the recognized fall of these autoantibodies in pregnancy, there is limited guidance on the timing of such testing. We assessed optimal test timing of TPOAb/TGAb for the detection of Hashimoto's thyroiditis and post-partum thyroid dysfunction (PPTD). DESIGN: Prospective longitudinal study with recruitment in Trimester 1. PATIENTS: Healthy women ≤13 weeks' gestation from Mercy Hospital for Women, a tertiary obstetric hospital in Melbourne. MEASUREMENTS: Serum TPOAb, TGAb, TSH and fT4 were measured at Trimester 1 (T1), Trimester 2(T2), Trimester 3(T3) and postpartum (PP) in each participant. Post-partum thyroid dysfunction (PPTD) was defined if TSH deviated from the assay's nonpregnant reference interval. Longitudinal random-effect logistic regression was used to investigate the association between time and positive/negative thyroid autoantibody status. RESULTS: Samples from 140 women at T1 (12·0: 10·3-13·0) (median: IQR weeks' gestation); 95 at T2 (24·3: 23·0-25·9), 79 at T3 (35·9: 34·8-36·7) and 83 at PP (12·4: 10·8-14·6 weeks post-partum) were attained. At T1, 13 (9%) and 15 (11%) women had positive TPOAb and TGAb, respectively. The odds of having a positive TPOAb were 96% lower at T2 [OR = 0·04 (95% CI: 0·02-0·8; P = 0·03)] and 97% lower at T3 [OR = 0·03 (95% CI: 0·001-0·6; P = 0·02)] than at T1. Similarly, the odds of having a positive TGAb were 99·4% lower [OR = 0·006 (95% CI: 0-0·3; P = 0·01)] at T2, and 99·5% lower [OR = 0·005 (95% CI: 0-0·4; P = 0·02)] at T3 than at T1. The ROC analysis diagnostic ORs for a positive TPOAb and/or TGAb to predict PPTD were 7·8 (95% CI: 2·2-27·6), 1·2 (95% CI: 0-8·9), 2·0 (95% CI: 0-16·8), and 12·2 (95% CI: 3·3-44·9) at T1, T2, T3 and post-partum, respectively. CONCLUSIONS: A significant proportion of pregnant women lose their thyroid autoantibody positivity after T1
- Published
- 2015
5. Inpatient HbA1c testing: a prospective observational study
- Author
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Nanayakkara, N, Nguyen, H, Churilov, L, Kong, A, Pang, N, Hart, GK, Owen-Jones, E, White, J, Ross, J, Stevenson, V, Bellomo, R, Lam, Q, Crinis, N, Robbins, R, Johnson, D, Baker, ST, Zajac, JD, Ekinci, EI, Nanayakkara, N, Nguyen, H, Churilov, L, Kong, A, Pang, N, Hart, GK, Owen-Jones, E, White, J, Ross, J, Stevenson, V, Bellomo, R, Lam, Q, Crinis, N, Robbins, R, Johnson, D, Baker, ST, Zajac, JD, and Ekinci, EI
- Abstract
OBJECTIVE: To use admission inpatient glycated hemoglobin (HbA1c) testing to help investigate the prevalence of unrecognized diabetes, the cumulative prevalence of unrecognized and known diabetes, and the prevalence of poor glycemic control in both. Moreover, we aimed to determine the 6-month outcomes for these patients. Finally, we aimed to assess the independent association of diabetes with these outcomes. RESEARCH DESIGN AND METHODS: Prospective observational cohort study conducted in a tertiary hospital in Melbourne, Australia. PATIENTS: A cohort of 5082 inpatients ≥54 years admitted between July 2013 and January 2014 underwent HbA1c measurement. A previous diagnosis of diabetes was obtained from the hospital medical record. Patient follow-up was extended to 6 months. RESULTS: The prevalence of diabetes (known and unrecognized) was 34%. In particular, we identified that unrecognized but HbA1c-confirmed diabetes in 271 (5%, 95% CI 4.7% to 6.0%) patients, previously known diabetes in 1452 (29%, 95% CI 27.3% to 29.8%) patients; no diabetes in 3359 (66%, 95% CI 64.8-67.4%) patients. Overall 17% (95% CI 15.3% to 18.9%) of patients with an HbA1c of >6.5% had an HbA1c ≥8.5%. After adjusting for age, gender, Charlson Index score, estimated glomerular filtration rate, and hemoglobin levels, with admission unit treated as a random effect, patients with previously known diabetes had lower 6-month mortality (OR 0.69, 95% CI 0.56 to 0.87, p=0.001). However, there were no significant differences in proportions of intensive care unit admission, mechanical ventilation or readmission within 6 months between the 3 groups. CONCLUSIONS: Approximately one-third of all inpatients ≥54 years of age admitted to hospital have diabetes of which about 1 in 6 was previously unrecognized. Moreover, poor glycemic control was common. Proportions of intensive care unit admission, mechanical ventilation, or readmission were similar between the groups. Finally, diabetes was independently associat
- Published
- 2015
6. Association between Severe Pandemic 2009 Influenza A (H1N1) Virus Infection and Immunoglobulin G2Subclass Deficiency
- Author
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Gordon, C. L., primary, Johnson, P. D. R., additional, Permezel, M., additional, Holmes, N. E., additional, Gutteridge, G., additional, McDonald, C. F., additional, Eisen, D. P., additional, Stewardson, A. J., additional, Edington, J., additional, Charles, P. G. P., additional, Crinis, N., additional, Black, M. J., additional, Torresi, J., additional, and Grayson, M. L., additional
- Published
- 2010
- Full Text
- View/download PDF
7. Association between Severe Pandemic 2009 Influenza A (H1N1) Virus Infection and Immunoglobulin G2 Subclass Deficiency.
- Author
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Gordon, C. L., Johnson, P. D. R., Permezel, M., Holmes, N. E., Gutteridge, G., McDonald, C. F., Eisen, D. P., Stewardson, A. J., Edington, J., Charles, P. G. P., Crinis, N., Black, M. J., Torresi, J., and Grayson, M. L.
- Subjects
H1N1 influenza ,COMMUNICABLE diseases ,PREGNANCY ,OBESITY ,IMMUNOSUPPRESSION ,IMMUNOGLOBULIN G ,CRITICAL care medicine ,QUANTITATIVE research ,RESEARCH methodology ,DISEASE risk factors - Abstract
Background. Severe pandemic 2009 influenza A virus (H1N1) infection is associated with risk factors that include pregnancy, obesity, and immunosuppression. After identification of immunoglobulin G
2 (IgG2 ) deficiency in 1 severe case, we assessed IgG subclass levels in a cohort of patients with H1N1 infection. Methods. Patient features, including levels of serum IgG and IgG subclasses, were assessed in patients with acute severe H1N1 infection (defined as infection requiring respiratory support in an intensive care unit), patients with moderate H1N1 infection (defined as inpatients not hospitalized in an intensive care unit), and a random sample of healthy pregnant women. Results. Among the 39 patients with H1N1 infection (19 with severe infection, 7 of whom were pregnant; 20 with moderate infection, 2 of whom were pregnant), hypoabuminemia (P < .001), anemia (P < .001), and low levels of total IgG (P = .01), IgG1 (P = .022), and IgG2 (15 of 19 vs 5 of 20; P = .001; mean value ± standard deviation [SD], 1.8 ± 1.7 g/L vs 3.4 ± 1.4 g/L; P = .003) were all statistically significantly associated with severe H1N1 infection, but only hypoalbuminemia (P = .02) and low mean IgG2 levels (P = .043) remained significant after multivariate analysis. Follow-up of 15 (79%) surviving IgG2 -deficient patients at a mean (±SD) of 90 ± 23 days (R, 38-126) after the initial acute specimen was obtained found that hypoalbuminemia had resolved in most cases, but 11 (73%) of 15 patients remained IgG2 deficient. Among 17 healthy pregnant control subjects, mildly low IgG1 and/or IgG2 levels were noted in 10, but pregnant patients with H1N1 infection had significantly lower levels of IgG2 (P = .001). Conclusions. Severe H1N1 infection is associated with IgG2 deficiency, which appears to persist in a majority of patients. Pregnancy-related reductions in IgG2 level may explain the increased severity of H1N1 infection in some but not all pregnant patients. The role of IgG2 deficiency in the pathogenesis of H1N1 infection requires further investigation, because it may have therapeutic implications. [ABSTRACT FROM AUTHOR]- Published
- 2010
- Full Text
- View/download PDF
8. Circulating SPINT1 is a biomarker of pregnancies with poor placental function and fetal growth restriction.
- Author
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Kaitu'u-Lino TJ, MacDonald TM, Cannon P, Nguyen TV, Hiscock RJ, Haan N, Myers JE, Hastie R, Dane KM, Middleton AL, Bittar I, Sferruzzi-Perri AN, Pritchard N, Harper A, Hannan NJ, Kyritsis V, Crinis N, Hui L, Walker SP, and Tong S
- Subjects
- Animals, Anthropometry, Female, Humans, Infant, Newborn, Infant, Small for Gestational Age, Mice, Placental Insufficiency, Plethysmography, Predictive Value of Tests, Pregnancy, Pregnancy Trimester, Third, Sensitivity and Specificity, Ultrasonography, Prenatal, Umbilical Arteries physiology, Uterine Artery physiology, Biomarkers blood, Fetal Growth Retardation diagnosis, Placenta physiopathology, Proteinase Inhibitory Proteins, Secretory blood
- Abstract
Placental insufficiency can cause fetal growth restriction and stillbirth. There are no reliable screening tests for placental insufficiency, especially near-term gestation when the risk of stillbirth rises. Here we show a strong association between low circulating plasma serine peptidase inhibitor Kunitz type-1 (SPINT1) concentrations at 36 weeks' gestation and low birthweight, an indicator of placental insufficiency. We generate a 4-tier risk model based on SPINT1 concentrations, where the highest risk tier has approximately a 2-5 fold risk of birthing neonates with birthweights under the 3
rd , 5th , 10th and 20th centiles, whereas the lowest risk tier has a 0-0.3 fold risk. Low SPINT1 is associated with antenatal ultrasound and neonatal anthropomorphic indicators of placental insufficiency. We validate the association between low circulating SPINT1 and placental insufficiency in two other cohorts. Low circulating SPINT1 is a marker of placental insufficiency and may identify pregnancies with an elevated risk of stillbirth.- Published
- 2020
- Full Text
- View/download PDF
9. Inpatient HbA1c testing: a prospective observational study.
- Author
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Nanayakkara N, Nguyen H, Churilov L, Kong A, Pang N, Hart GK, Owen-Jones E, White J, Ross J, Stevenson V, Bellomo R, Lam Q, Crinis N, Robbins R, Johnson D, Baker ST, Zajac JD, and Ekinci EI
- Abstract
Objective: To use admission inpatient glycated hemoglobin (HbA1c) testing to help investigate the prevalence of unrecognized diabetes, the cumulative prevalence of unrecognized and known diabetes, and the prevalence of poor glycemic control in both. Moreover, we aimed to determine the 6-month outcomes for these patients. Finally, we aimed to assess the independent association of diabetes with these outcomes., Research Design and Methods: Prospective observational cohort study conducted in a tertiary hospital in Melbourne, Australia., Patients: A cohort of 5082 inpatients ≥54 years admitted between July 2013 and January 2014 underwent HbA1c measurement. A previous diagnosis of diabetes was obtained from the hospital medical record. Patient follow-up was extended to 6 months., Results: The prevalence of diabetes (known and unrecognized) was 34%. In particular, we identified that unrecognized but HbA1c-confirmed diabetes in 271 (5%, 95% CI 4.7% to 6.0%) patients, previously known diabetes in 1452 (29%, 95% CI 27.3% to 29.8%) patients; no diabetes in 3359 (66%, 95% CI 64.8-67.4%) patients. Overall 17% (95% CI 15.3% to 18.9%) of patients with an HbA1c of >6.5% had an HbA1c ≥8.5%. After adjusting for age, gender, Charlson Index score, estimated glomerular filtration rate, and hemoglobin levels, with admission unit treated as a random effect, patients with previously known diabetes had lower 6-month mortality (OR 0.69, 95% CI 0.56 to 0.87, p=0.001). However, there were no significant differences in proportions of intensive care unit admission, mechanical ventilation or readmission within 6 months between the 3 groups., Conclusions: Approximately one-third of all inpatients ≥54 years of age admitted to hospital have diabetes of which about 1 in 6 was previously unrecognized. Moreover, poor glycemic control was common. Proportions of intensive care unit admission, mechanical ventilation, or readmission were similar between the groups. Finally, diabetes was independently associated with lower 6-month mortality.
- Published
- 2015
- Full Text
- View/download PDF
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