Genetics of immunoglobulin-A vasculitis (Henoch-Schönlein purpura): An updated review

Immunoglobulin-A vasculitis (IgAV) is classically a childhood small-sized blood vessel vasculitis with predominant involvement of the skin. Gastrointestinal and joint manifestations are common in patients diagnosed with this condition. Nephritis, which is more severe in adults, constitutes the most feared complication of this vasculitis. The molecular bases underlying the origin of IgAV have not been completely elucidated. Nevertheless, several pieces of evidence support the claim that genes play a crucial role in the pathogenesis of this disease. The human leukocyte antigen (HLA) region is, until now, the main genetic factor associated with IgAV pathogenesis. Besides a strong association with HLA class II alleles, specifically HLA-DRB1 alleles, HLA class I alleles also seem to influence on the predisposition of this disease. Other gene polymorphisms located outside the HLA region, including those coding cytokines, chemokines, adhesion molecules as well as those related to T-cells, aberrant glycosylation of IgA1, nitric oxide production, neoangiogenesis, renin-angiotensin system and lipid, Pyrin and homocysteine metabolism, may be implicated not only in the predisposition to IgAV but also in its severity. An update of the current knowledge of the genetic component associated with the pathogenesis of IgAV is detailed in this review.Acknowledgements: RL-Mis supported by the Miguel Servet I programme of the Spanish Ministry of Economy and Competitiveness through the grant CP16/ 00033. FG is recipient of a Sara Borrell postdoctoral fellowship from the “Instituto Carlos III de Salud” at the Spanish Ministry of Health (Spain) (CD15/00095). SR-M is supported by funds from the RETICS Program (RIER) (RD16/0012/0009). FDC is supported by the Ramón y Cajal programme of the Spanish Ministry of Economy and Competitiveness through the grant RYC-2014-16458

Search for gravitational-lensing signatures in the full third observing run of the LIGO-Virgo network

Gravitational lensing by massive objects along the line of sight to the source causes distortions of gravitational wave-signals; such distortions may reveal information about fundamental physics, cosmology and astrophysics. In this work, we have extended the search for lensing signatures to all binary black hole events from the third observing run of the LIGO--Virgo network. We search for repeated signals from strong lensing by 1) performing targeted searches for subthreshold signals, 2) calculating the degree of overlap amongst the intrinsic parameters and sky location of pairs of signals, 3) comparing the similarities of the spectrograms amongst pairs of signals, and 4) performing dual-signal Bayesian analysis that takes into account selection effects and astrophysical knowledge. We also search for distortions to the gravitational waveform caused by 1) frequency-independent phase shifts in strongly lensed images, and 2) frequency-dependent modulation of the amplitude and phase due to point masses. None of these searches yields significant evidence for lensing. Finally, we use the non-detection of gravitational-wave lensing to constrain the lensing rate based on the latest merger-rate estimates and the fraction of dark matter composed of compact objects

Laparoscopic Treatment of Vesicovaginal Fistula

Introduction Vesicovaginal fistula is a rare disease with great impact for the patients. Laparoscopic repair can be an interesting option in selected cases with goods results but few experience is reported.Objectives Detailed demonstration of our laparoscopic vesicovaginal fistula repair technique. Initial results for ten patients are provided Methods: We treated all cases by the same technique. The surgical steps were: Patient positioning in Lloyd-Davis; Cystoscopy and implant of guide wire on fistula and ureteral catheters (that was removed after procedure); Transperitoneal access and 4 or 5 ports in V or W shape; Opening the bladder wall; Dissection between bladder and vagina for tension free repair; Fistula resection; Vagina repair with Vicryl 3-0; Bladder repair with Vicryl 3-0; Peritoneum/omentum interposition; Positioning 20 Fr urethral catheter.Results Mean age was 50 years. Mean number of fistulas was 1,2. The most common etiology was gynecologic surgery (7). Mean operative time was 2,5 (1,8-3,2) hours. Mean blood loss was 150 (100-200)mL. Complication rate was 10% (one case of urinary infection treated conservatively). Mean hospital stay was 1,2 (1-2) days. Mean return to normal and activities was 20 (15-30) days. For nine patients mean sexual intercourse time was 3 (1-6) months. Success rate after 1 year was 90% (one case of recurrence in patient with previous radiotherapy). Mean follow-up was 36 (12-60) months.Conclusions Laparoscopic repair is feasible, reproducible and present all advantages of minimally invasive surgical procedure. Long term results are similar to conventional open approaches

Tratamento conservador do carcinoma do canal anal

OBJETIVO: Relatar os resultados do tratamento conservador do carcinoma de canal anal com radioterapia e quimioterapia do Centro de Tratamento e Pesquisa Hospital do Câncer A.C. Camargo. MÉTODO: De março de 1993 a dezembro de 2001, 47 pacientes com diagnóstico histológico de carcinoma do canal anal foram tratados de forma conservadora. A dose mediana de radioterapia na pelve e no tumor primário foi respectivamente de 45 e 55 Gy. A quimioterapia foi realizada com 5- Fluorouracil e Mitomicina-C, com doses medianas de 1000 mg/m² por quatro dias e 10 mg/m² por ciclo, respectivamente. Trinta e oito (80,8%) pacientes não receberam radioterapia em região inguinal. O tempo de seguimento mediano foi de 40 meses (oito dias a 116 meses). RESULTADOS: A resposta completa foi alcançada em 40 pacientes (85,1%). O controle local foi obtido em 31 (66%), e a função esfincteriana foi preservada em 38 (80,9%) casos. Metástases à distância foram detectadas em sete (14,9%) pacientes. A sobrevida global e sobrevida livre de doença em cinco anos foram de 61,5% e 50,1%, respectivamente. A sobrevida global e a sobrevida livre de doença em cinco anos para os pacientes que tiveram controle local foram 77,8% (p < 0,001) e 74,4% (p < 0,001). A sobrevida global e livre de doença em cinco anos para os pacientes com linfonodo inguinal clinicamente tumoral foi de 70,7% e 56,7%, respectivamente (p = 0,0085 e p = 0,0207). Doze (25,5%) pacientes necessitaram de interrupção temporária do tratamento. Cinco pacientes tiveram complicações crônicas leves. CONCLUSÃO: O tratamento realizado foi efetivo tanto para preservação do esfíncter anal quanto para controle local de doença. A presença de linfonodo inguinal clinicamente tumoral e a ausência de recidiva foram os principais fatores prognósticos para sobrevida global e sobrevida livre de doença. A taxa relativamente alta de recidiva em região inguinal sugere a necessidade de radioterapia eletiva nessa região

A control and automation system for wave basins

This paper presents the new active absorption wave basin, named Hydrodynamic Calibrator (HC), constructed\ud at the University of São Paulo (USP), in the Laboratory facilities of the Numerical Offshore Tank\ud (TPN). The square (14 m 14 m) tank is able to generate and absorb waves from 0.5 Hz to 2.0 Hz, by\ud means of 148 active hinged flap wave makers. An independent mechanical system drives each flap by\ud means of a 1HP servo-motor and a ball-screw based transmission system. A customized ultrasonic wave\ud probe is installed in each flap, and is responsible for measuring wave elevation in the flap. A complex\ud automation architecture was implemented, with three Programmable Logic Computers (PLCs), and a\ud low-level software is responsible for all the interlocks and maintenance functions of the tank. Furthermore,\ud all the control algorithms for the generation and absorption are implemented using higher level\ud software (MATLAB /Simulink block diagrams). These algorithms calculate the motions of the wave makers\ud both to generate and absorb the required wave field by taking into account the layout of the flaps and\ud the limits of wave generation. The experimental transfer function that relates the flap amplitude to the\ud wave elevation amplitude is used for the calculation of the motion of each flap. This paper describes the\ud main features of the tank, followed by a detailed presentation of the whole automation system. It\ud includes the measuring devices, signal conditioning, PLC and network architecture, real-time and synchronizing\ud software and motor control loop. Finally, a validation of the whole automation system is presented,\ud by means of the experimental analysis of the transfer function of the waves generated and the\ud calculation of all the delays introduced by the automation system.The authors acknowledge Petrobras for the financial support and for the motivation of this work.The authors also acknowledge the Brazilian research funding agencies: São Paulo State Research Foundation (FAPESP). National Council for Scientific and Technological Development (CNPq) and Research and Projects Financing (FINEP) for the research grants and for the constant suppor