Treatment review of sight threatening circumscribed choroidal haemangioma

AIM: To describe our clinical experience in treating circumscribed choroidal haemangioma (CCH) in a tertiary referral centre over a fifteen year period prior to photodynamic therapy. METHODS: The departmental database and photographic records of a tertiary referral center were used to identify patients who were treated for CCH between 1992 and 2007. Their case records were reviewed. RESULTS: Visual acuity improved (>2 Snellen lines) in eleven patients (69%) remained stable in one patient (6%) and deteriorated in four patients (25%). Six of the seven treated with brachytherapy and three of the four treated with transpupillary thermotherapy achieved better visual acuity after treatment. 86% of patients treated within six months of onset of symptoms and 50% of patients treated after six months of onset of symptoms noted an improvement in visual acuity. Only one patient in our series had a final VA of 6/60 or worse. Mean follow-up was thirty-five months. CONCLUSION: Visual outcome is better when treatment is performed within 6 months of symptoms. The majority of patients achieved an improvement in visual acuity without any adverse effect following treatment.     

Intestinal function in glycogen storage disease type I

Glycogen storage disease type I (GSD I) (McKusick 232200) is caused by inherited defects of the glucose-6-phosphatase complex. Patients with GSD Ia as well as patients with GSD Ib may suffer from intermittent diarrhoea, which seems to worsen with age. The cause of this diarrhoea is unknown. This study describes the results of investigations of intestinal functions and morphology in patients with GSD Ia and GSD Ib, which were performed to detect a common cause for chronic diarrhoea in GSD I. The following were investigated: faecal fat excretion, faecal ₁-antitrypsin and faecal chymotrypsin, expiratory H₂ concentrations, persorption of cornstarch in urine and colonic biopsies. With the investigations presented in this study, no common cause for diarrhoea in GSD I was found. In GSD Ib loss of mucosal barrier function due to inflammation, documented by increased faecal ₁-antitrypsin excretion (3.5–9.6mg/g dry faeces) and inflammation in the colonic biopsies, seems to be the main cause. The inflammation is most likely related to disturbed neutrophil function, which is often found in GSD Ib. Whether another cause is involved in GSD Ia and in GSD Ib, related to the disturbed function of glucose-6-phosphatase in the enterocyte, remains to be investigated.     

Weight loss and brown adipose tissue reduction in rat model of sleep apnea

Background -  

Obesity is related to obstructive sleep apnea-hypopnea syndrome (OSAHS), but its roles in OSAHS as cause or consequence are not fully clarified. Isocapnic intermittent hypoxia (IIH) is a model of OSAHS. We verified the effect of IIH on body weight and brown adipose tissue (BAT) of Wistar rats.     

小腿假肢接受腔的三维有限元分析

通过建立三维非线性有限元模型来分析小腿假肢接受腔与残肢之间的载荷分布。此模型基于残肢,骨头,软套和接受腔的三维几何形状,考虑界面摩擦滑动条件和软组织的大变形等非线性因素。模型可以预测不同外载下残肢和接受腔之间的压力,剪切力和相对滑动情况。并分析了不同的接受腔形状对载荷分布的影响。