1.Inflammatory cytokines and childhood obstructive sleep apnoea.
Albert M LI ; Hugh S LAM ; Michael H M CHAN ; Hung K SO ; Siu K NG ; Iris H S CHAN ; Christopher W K LAM ; Yun K WING
Annals of the Academy of Medicine, Singapore 2008;37(8):649-654
OBJECTIVETo evaluate serum cytokine concentrations in children with and without obstructive sleep apnoea (OSA) and to investigate the effects of OSA treatment on cytokines.
MATERIALS AND METHODSConsecutive children with habitual snoring and symptoms suggestive of OSA were recruited. They completed a sleep apnoea symptom questionnaire, underwent physical examination and overnight polysomnography (PSG). OSA was diagnosed if obstructive apnoea index (OAI) >1. A blood sample was collected for analysis of IL-6, IL-8, and TNF-alpha after PSG.
RESULTSOne hundred forty-two children (97 males) with a median (IQR) age of 11.1 years (9.0-12.8) were recruited. The commonest presenting symptoms were nocturnal mouth breathing, prone sleeping position and poor attention at school. Forty-seven children were found to have OSA and they had higher serum IL-6 [0.1 (0.1-0.4) vs 0.1 (0.1-0.1) pg/mL, P = 0.001] and IL-8 [1.7 (1.0-2.3) vs 1.3 (0.9-1.7) pg/mL, P = 0.029] concentrations compared to their non-OSA counterparts. Multiple regression analysis indicated that OAI was significantly associated with both IL-6 (r = 0.351, P <0.001) and IL-8 (r = 0.266, P = 0.002). Sixteen children underwent treatment and there was significant reduction in mean (SD) serum IL-8 after intervention [pre vs post levels of 1.9 (1.0) vs 1.1 (0.6) pg/mL, P = 0.001] independent of weight loss.
CONCLUSIONChildren with OSA had elevated levels of pro-inflammatory cytokines that normalised following treatment suggesting that the inflammatory response is potentially reversible. Early detection and intervention may be beneficial.
Child ; Cytokines ; blood ; Female ; Humans ; Interleukin-6 ; blood ; Interleukin-8 ; blood ; Male ; Polysomnography ; Sleep Apnea, Obstructive ; blood ; therapy ; Tumor Necrosis Factor-alpha ; blood
2.Presence of extensive intraductal component in patients undergoing breast conservative surgery predicts presence of residual disease in subsequent completion mastectomy.
Christopher C P YIU ; Wings T Y LOO ; C K LAM ; Louis W C CHOW
Chinese Medical Journal 2009;122(8):900-905
BACKGROUNDLocal recurrence remains a serious problem among patients undergoing breast conservative surgery. This study aimed at identifying risk factors for residual disease after breast conservative surgery.
METHODSThis retrospective study was based on patients with invasive breast cancer who have received breast conservative surgery and subsequent completion mastectomy. All patients had a clear resection margin in the initial operation. We analyzed the association between the presence of residual disease during completion mastectomy and the following risk factors: T staging, young age, and presence of extensive intraductal component (EIC), a close margin, lymphovascular permeation (LVP), positivity of estrogen receptor, progesterone receptor, and c-erbB-2.
RESULTSResidual disease was encountered in 21 (45.7%) of 46 patients; EIC was present in 28 patients (60.9%), of whom 17 had residual disease. Presence of EIC during breast conservation surgery was associated with a higher risk of residual disease during completion mastectomy (P = 0.011). Other variables were not statistically significant risk factors for presence of residual disease. No local recurrence was recorded in our cohort, and the disease-free survival and overall survival after completion mastectomy were similar for patients who had residual disease and those who had not.
CONCLUSIONSThe presence of EIC is a significant risk factor for residual disease in patients after breast conservative surgery. Our findings may suggest the indicated value of completion mastectomy in patients with EIC during initial breast conservative surgery to decrease the risk of subsequent local failure.
Adult ; Age Factors ; Aged ; Aged, 80 and over ; Breast Neoplasms ; surgery ; Carcinoma, Intraductal, Noninfiltrating ; complications ; Disease-Free Survival ; Female ; Humans ; Mastectomy ; Mastectomy, Segmental ; Middle Aged ; Neoplasm, Residual ; pathology ; surgery ; Retrospective Studies ; Risk Factors
3.Updates on the surgical management of paediatric cataract with primary intraocular lens implantation.
Dorothy S P FAN ; Wilson W K YIP ; Christopher B O YU ; Srinivas K RAO ; Dennis S C LAM
Annals of the Academy of Medicine, Singapore 2006;35(8):564-570
With the advent of modern surgical techniques, paediatric cataract has become much more manageable. Intraocular lens (IOL) implantation is the standard of care for patients over the age of 2 years. The use of IOL in young infants is still controversial. In addition, there are still unresolved issues, such as the minimum age at which IOL can be safely implanted, IOL power selection and IOL power calculation. The current trends in the management of the above challenges are discussed. Although numerous reports on the prevention and management of posterior capsule opacification have been published, there are ongoing intensive debates and research. Long-term postoperative complications like glaucoma and rhegmatogenous retinal detachment are problems that cannot be overemphasised and these issues are also reviewed.
Cataract
;
congenital
;
Cataract Extraction
;
adverse effects
;
methods
;
Child
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Child, Preschool
;
Humans
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Infant
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Infant, Newborn
;
Lens Implantation, Intraocular
;
adverse effects
;
methods
;
Lenses, Intraocular
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Postoperative Complications
;
prevention & control
;
Refraction, Ocular