Improving the Accuracy of 3-D Reconstruction in Robotic Vision Applications

Thesis (Ph.D.)--University of Washington, 2016-08

Ocular manifestations of microcephaly with or without chorioretinopathy, lymphedema or intellectual disability (MCLID) syndrome associated with mutations in KIF11

Purpose Microcephaly with or without chorioretinopathy, lymphedema or intellectual disability (MCLID) is an autosomal dominant condition. Mutations in KIF11 have been found to be causative in approximately 75% of cases. This study describes the ocular phenotype in patients with confirmed KIF11 mutations. Methods Standard ophthalmic examination and investigation including visual acuity, refraction and fundus examination was carried out in all patients. Fundus autofluorescence imaging (FAF) was performed in three patients, and four patients underwent spectral domain optical coherence tomography (OCT). Flash electroretinography (ERG) was performed in seven patients, and five underwent additional pattern electroretinography (PERG). Results The patients ranged in age from 2 to 10 years. Most presented with visual acuity loss. Fundus examination revealed lacunae of chorioretinal atrophy. Pigmentary macular changes and optic disc pallor were present in three of seven patients. Fundus autofluorescence demonstrated hypoautofluorescence at the macula in two of three patients. The lacunae of chorioretinal atrophy were hypoautofluorescent. The OCT showed atrophic maculae in three of four patients. Follow-up in one patient showed no deterioration of the vision over a 9-year period. The lesions appear not to be progressive on the follow-up imaging. Electrophysiology showed generalized rod and cone dysfunction and severe macular dysfunction. Inner retinal dysfunction was evident in three of seven patients. Conclusions Patients with KIF11 mutations show a specific ocular phenotype with variable expressivity and intrafamilial variability. Macular atrophy and dysfunction have not been consistently documented before. The fundus lesions appear non-progressive. The findings assist in providing an accurate diagnosis and thus improving the management and follow-up of patients with this syndrome.

Benefits of laparoscopic colorectal surgery in the geriatric patient

Background. Our aim is the retrospective valuation of results in over 75 year-old patients, with colorectal cancer, treated with laparoscopic and laparotomic surgery, considering how laparoscopic surgery has improved these patients’ outcome. Patients and methods. We took all over 75 year-old patients, affected by colorectal cancer, treated with colectomy. Patients has been divided into two groups: laparotomy group and laparoscopy group. Data concerning patients, i.e., age, sex, BMI, ASA, comorbidities, were collected with data concerning the operation (surgical time, conversion percentage). Postoperative outcomes – i.e., gas evacuation, bowel movements, solid and liquid feeding, need to ICU, complications, re-surgery, hospitalization and type of discharge, mortality – were evaluated. Results. A total of 145 patients are included: laparotomy 80 and laparoscopy 51. Two groups are homogeneous for age, sex, BMI, ASA, comorbidities. Surgical times are the same. Need to Intesive Care Unit (ICU) is lower in laparoscopy. Gas evacuation and bowel movements are earlier in laparoscopy. Liquid and solid diet is earlier in laparoscopy. Hospitalization was earlier after laparoscopy. Discharge at home is more frequent in laparoscopy. Major and minor complications are lower in laparoscopy. Post-operative mortality is lower in laparoscopy. Conclusions. Laparoscopy improves over 75 year-old patients’ outcomes, after elective surgery for colorectal cancer. Surgery trauma, anaesthesia, nutritional and hemodynamic alterations, are factors that break the old patients’ fragile physiologic balance. Less traumatic surgery improves old patients’ outcomes.

An Unusual Case of Cerebral Oedema

Hereditary angioedema (HAE) is a rare genetic disorder transmitted as an autosomal dominant trait, characterized by reduced plasma concentration or by the presence of non-functional C1 esterase inhibitor. Oedema caused by HAE mostly affects the skin and bowel and can induce swelling of genitalia. Oedema can be life threatening if it causes swelling of the larynx with obstruction of the airways. We describe the case of a 52-year-old man who presented a neurological emergency (coma), where the remarkable localization of the clinical manifestation and the unusual symptomatology hindered the correct diagnosis.

Protective effect of simvastatin in the cyclophosphamide-induced hemohrragic cystitis in rats

Cyclophosphamide (CYP) is an antineoplastic agent used for the treatment of many neoplastic and inflammatory diseases. Hemorrhagic cystitis is a frequent side effect of CYP. Several studies show that simvastatin has important pleiotropic (anti-inflammatory and immunomodulatory) effects. The purpose of the study was to investigate the effect of simvastatin on bladder, ureter and kidney injury caused by CYP. Methods: Adult male Wistar rats were randomly divided into three groups. The CYP/SIM group received simvastatin microemulsion by gavage during 7 days (10 mg/kg body wt) before the administration of CYP and the CYP/SAL group rats received saline 0.9%. The control rats were not treated. After that, all rats were treated with a single dose of CYP 200 mg/kg body wt intraperitoneally. The rats were killed 24 h after CYP administration. Plasma cytokines (TNF-a, IL-1b, IL-6) were measured by ELISA. Macro and light microscopic study was performed in the bladder, kidney and ureter. Results: In the bladders of CYP/SIMV treated rats edema of lamina propria with epithelial and sub-epithelial hemorrhage were lower than in CYP/SAL treated rats. The scores for macroscopic and microscopic evaluation of bladder and ureter were significantly lower in CYP/SIMV rats than in CYP/SAL rats. The kidney was not affected. The expression of TNF-a, IL-1b and IL-6 was significatly lower in CF/SINV rats (164.8±22, 44.8±8 and 52.4±13) than in CF/SAL rats (378.5±66, 122.9±26 e 123.6±18), respectively. Conclusion: The results of the current study suggest that simvastatin pretreatment attenuated CYP-induced urotelium inflammation and decreased the activities of cytokines

Influence of Splenectomy on the Biodistribution of Technetium-99m Dimercaptosuccinic Acid (99mTc-DMSA) in Rats

This study aimed to evaluate if the splenectomy alters the biodistribution of 99mTc-DMSA and renal function in Wistar rats. The animals were separated in the groups: splenectomy (n = 6) and control (n = 6). After splenectomy (15 days), the administration of 0.1ml of 99mTc-DMSA IV (0.48 MBq) was carried out. Thirty minutes later, kidney, heart, lung, thyroid, stomach, bladder and femur and samples of blood were isolated. The organs were weighed, counted and the percentage of radioactivity -g (%ATI-g) determined. Serum urea and creatinine, hematocrit, leukocytes and platelets were measured. Statistics by t test (p<0.05) was done. There was a significant reduction in %ATI-g in kidney and blood (p<0.05) of splenectomized animals, a significant increase (p<0.05) of urea (88.8 ± 18.6 mg-dL) and creatinine (0.56 ± 0.08 mg-dL), compared to the controls (51.5±1.6, 0.37±0.02mg-dL, respectively), as well as increase in platelets and leucocytes, and hematocrit reduction. The analysis of the results indicates that in rats, splenectomy seems to alter the renal function and the uptake of 99mTc-DMSA

Activation of Sonic hedgehog signaling in ventricular cardiomyocytes exerts cardioprotection against ischemia reperfusion injuries

International audience

Epigallocatechin Gallate: A Review of Its Beneficial Properties to Prevent Metabolic Syndrome

This article belongs to the Special Issue Diet and Metabolic Dysfunction

Cuidados de enfermagem ao paciente em pós-operatório de prostatectomia: revisão integrativa

Este estudo trata-se de revisão integrativa da literatura com objetivo de sintetizar o conhecimento produzido em artigos sobre os cuidados de enfermagem aos pacientes em pós-operatório de prostatectomia. Para seleção dos artigos foram consultadas cinco bases de dados – SCOPUS, CINAHL, PUBMED, LILACS e Cochrane – sendo incluídos dezenove artigos. Os resultados mostram estudos que se enquadram nos níveis II, IV, V, VI e VII de evidência, a maioria realizada nos Estados Unidos durante os anos de 1999 a 2011. Os cuidados de enfermagem identificados foram agrupados em seis categorias: acompanhamento psicológico, orientações pós-operatórias, tratamento da disfunção erétil, tratamento da incontinência urinária, tratamento da dor e tratamento da hiponatremia. Conclui-se que os estudos com maior nível de evidência identificado recomendam cuidados de enfermagem centrados no acompanhamento psicológico, nas orientações do período pós-operatório e no tratamento da disfunção erétil. Destaca-se ainda que tais recomendações concentram-se, sobretudo, nas ações de apoio emocional e educativo

More Than Just a Case of Polymyalgia Rheumatica

Malignant neoplasms are associated with a wide range of paraneoplastic rheumatological syndromes. These can be defined as remote effects of cancer, which are not caused by the tumor and its metastasis. The authors describe the case of an 82-year-old man, who presented with a one-month history of pain, stiffness, and functional limitation of the scapular and pelvic girdles. Blood tests showed raised levels of inflammatory markers. He was diagnosed with Polymyalgia Rheumatica, but the lack of response to corticosteroids led to the suspicion of an alternative diagnosis, like, for example, an occult neoplasm. Although patient evaluation was initially normal, five months later he developed macroscopic haematuria and was diagnosed with bladder and prostate carcinomas. After surgical treatment, the patient fully recovered from his rheumatological syndrome.

Experiences of patients undergoing chemotherapy - a qualitative study of adults attending Uganda Cancer Institute

Background: Cancer is a global public health challenge and how patients in countries with poor healthcare infrastructure experience cancer treatment is largely unknown. Purpose: The objective of this study was to describe adult Ugandan cancer patients’ experiences of undergoing chemotherapy treatment. Methodology: Using a qualitative descriptive design, seven in-patients with varying cancer diagnoses at the Uganda Cancer Institute were interviewed about their experiences of undergoing chemotherapy treatment; the interviews were transcribed and analysed thematically. Results: The analysis resulted in nine subthemes, which were categorized under three main themes: ‘experiences related to the body’, with the subthemes dry and sensitive skin, changes in eating and bowel habits, fever and feelings of abnormal body sensation; ‘thoughts and feelings’, with four subthemes reflecting the psychosocial impact of chemotherapy; and ‘actively dealing with discomfort’, with three subthemes describing how patients dealt with side effects, such as by sticking to a diet. Conclusion: Receiving chemotherapy treatment is difficult, and the side effects negatively influenced patients’ bodies and moods. Dealing actively with discomfort and accepting negative impacts in hope of a cure helped the participants manage the acute complications related to the treatment. We recommend the development of interventions to ease discomfort due to chemotherapy.

Long-term consequences of Hodgkin lymphoma therapy on T-cell lymphopoiesis

International audience

Friedreich Ataxia

Friedreich ataxia (FRDA) is an autosomal recessive disease characterized by progressive neurological and cardiac abnormalities. It has a prevalence of around 2×10⁵ in whites, accounting for more than one-third of the cases of recessively inherited ataxia in this ethnic group. FRDA may not exist in nonwhite populations.The first symptoms usually appear in childhood, but age of onset may vary from infancy to adulthood. Atrophy of sensory and cerebellar pathways causes ataxia, dysarthria, fixation instability, deep sensory loss, and loss of tendon reflexes. Corticospinal degeneration leads to muscular weakness and extensor plantar responses. A hypertrophic cardiomyopathy may contribute to disability and cause premature death. Other common problems include kyphoscoliosis, pes cavus, and, in 10% of patients, diabetes mellitus.The FRDA gene (FXN) encodes a small mitochondrial protein, frataxin, which is produced in insufficient amounts in the disease, as a consequence of the epigenetic silencing of the gene triggered by a GAA triplet repeat expansion in the first intron of the gene. Frataxin deficiency results in impaired iron-sulfur cluster biogenesis in mitochondria, in turn leading to widespread dysfunction of iron-sulfur center containing enzymes (in particular respiratory complexes I, II and III, and aconitase), impaired iron metabolism, oxidative stress, and mitochondrial dysfunction. Therapy aims to restore frataxin levels or to correct the consequences of its deficiency.

El urbanismo expansivo y la movilidad infantil en Cataluña

Los modelos de movilidad son una de las expresiones de las distintas formas urbanas. El urbanismo expansivo, como una de estas formas urbanas, está asociado a ciertos tipos de desplazamientos, relacionados a altos niveles de disfunciones sociales, económicas y medioambientales. La comunicación explora las tipologías de desplazamientos en un grupo ciudadano muy específico: los menores de 16 años. La población infantil tiene sus propias pautas de movilidad y estas están relacionadas, también, a las distintas formas urbanas. El análisis se basa en los datos que ofrece la Encuesta de Movilidad Cotidiana de Cataluña 2006 y de ella se analizan las grandes cifras para la comunidad catalana en conjunto. También se comparan los distintos subámbitos territoriales en relación a las características urbanas que estos presentan.

Reabilitação física de cães com hérnias de disco toracolombares

Dissertação de Mestrado Integrado em Medicina Veterinária