Leicester Royal Infirmary

About: Leicester Royal Infirmary is a healthcare organization based out in Leicester, United Kingdom. It is known for research contribution in the topics: Population & Carotid endarterectomy. The organization has 5300 authors who have published 6204 publications receiving 208464 citations.

In Vivo Foveal Development Using Optical Coherence Tomography.

Abstract: Purpose: To characterize the time course of normal foveal development in vivo in term infants and young children using handheld spectral-domain optical coherence tomography (HH-SDOCT). Methods: We obtained 534 HH-SDOCT scans from 261 infants, children, and young adults with a mean age of 4.9 years (range, 0-27 years). Each retinal layer was manually segmented in ImageJ and correlated with gestational age (GA) and visual acuity (VA). The developmental trajectories of each retinal layer at the fovea, parafovea, and perifovea were calculated using fractional polynomial modeling. Results: The central macular thickness (CMT) increases logarithmically between birth and 48.6 months GA. The foveal ganglion cell (GCL), inner plexiform, inner nuclear (INL), and outer plexiform layers decrease in thickness exponentially until 18 months GA. Interestingly, the parafoveal and perifoveal GCL and INL thicknesses initially decrease until 17 months GA and then increase in thickness until 65.5 GA. The foveal outer nuclear layer, inner segment, and outer segment of the photoreceptors increase in thickness logarithmically until 32.4, 26.9, and 45.3 months GA, respectively. The parafoveal and perifoveal outer retinal layers increase in thickness more gradually until 146 months GA. The thickness of the outer retinal layers and CMT were strongly correlated with VA, with r = 0.54 (P Conclusions: We have modeled for the first time the complex, nonlinear developmental trajectories for each retinal layer and demonstrate that development continues until adolescence. Our description of normal development will be helpful in diagnosing, monitoring, and understanding pediatric retinal disease.

The use of complementary medicine in children with atopic dermatitis in secondary care in Leicester

Abstract: Summary Background The use of ‘complementary’ or ‘alternative’ medicine continues to rise in patients with skin disease, especially in those with chronic, inflammatory dermatoses. Objectives To qualify and quantify the usage of complementary medicine (CM) in children with atopic dermatitis (AD) in secondary care. Methods A face-to-face structured questionnaire study of 100 consecutive children with AD and their parent or guardian. Results The mean age of the children interviewed was 7·3 years (median age 6·0 years, range 0·6–17·1) and ethnic origin was 59% white, 35% Indian, 3% Afro-Caribbean and 3% mixed race. Forty-six of 100 patients (46%) had used, or were currently using, CM. Of the 54 patients who had not yet used CM, 17 of 54 (31%) said they intended to try this in the future. The most commonly used CM was Chinese herbal medicine by 20 of 46 patients (43% of those who had used CM), followed by herbal medicine (41%) and homeopathy (35%). Of 74 patients using CM, 26 (35%) felt their AD had improved while 39 of 74 (53%) reported that it had remained unchanged. Twenty-six of 46 (56%) CM users in this study would not recommend CM to other patients with AD. There was a strong association between the use of CM and ethnicity (P = 0·01). Half of the patients who had used CM (23 of 46) had used it on the recommendation of family or friends with skin disease, 17 of 46 (37%) from family or friends without skin disease and three of 46 (6%) each from health professionals or from the media or internet. Twenty-five of 46 (54%) of CM users did so because conventional treatment was not working, and eight of 46 (17%) because they were worried about the side-effects of conventional treatment. While 39 of 100 (39%) of all patients felt that CM was safer than conventional medicine, only 14 of 100 felt it was more efficacious. Fifty-one of 100 were happy to combine both types of treatment and 66 of 100 felt that CM should be available from the National Health Service. Conclusions In a population of children with AD attending a teaching hospital clinic in Leicester, U.K., 63% use or intend to use CM. This use is associated with ethnicity.

Detection of HER2 amplification in circulating free DNA in patients with breast cancer.

Abstract: Human epidermal growth factor receptor 2 (HER2) is amplified and overexpressed in 20–25% of breast cancers. This study investigated circulating free DNA (cfDNA) for detection of HER2 gene amplification in patients with breast cancer. Circulating free DNA was extracted from plasma of unselected patients with primary breast cancer (22 before surgery and 68 following treatment), 30 metastatic patients and 98 female controls using the QIAamp Blood DNA Mini Kit (Qiagen). The ratio of HER2 to an unamplified reference gene (contactin-associated protein 1 (CNTNAP1)) was measured in cfDNA samples by quantitative PCR (qPCR) using SK-BR-3 cell line DNA as a positive control. We validated the qPCR assay with DNA extracted from 23 HER2 3+ and 40 HER2-negative tumour tissue samples; the results agreed for 60 of 63 (95.2%) tumours. Amplification was detected in cfDNA for 8 of 68 patients following primary breast cancer treatment and 5 of 30 metastatic patients, but was undetected in 22 patients with primary breast cancer and 98 healthy female controls. Of the patients with amplification in cfDNA, 10 had HER2 3+ tumour status by immunohistochemistry. The results demonstrate for the first time the existence of amplified HER2 in cfDNA in the follow-up of breast cancer patients who are otherwise disease free. This approach could potentially provide a marker in patients with HER2-positive breast cancer.