Publications by authors named "Allan R"

Purpose: We identified structural abnormalities in the spermatic cord nerves that may explain how microsurgical denervation of the spermatic cord provides pain relief in patients with chronic orchialgia.

Materials And Methods: We retrospectively reviewed a prospective database to compare spermatic cord biopsy specimens from 56 men treated with a total of 57 procedures for microsurgical denervation of the spermatic cord for chronic orchialgia vs a control group of men without pain treated with cord surgery, including varicocelectomy in 4 and radical orchiectomy in 6. Tissue biopsies were obtained from mapped regions of the spermatic cord in all cases.

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Objective: Flow-mediated dilatation (FMD) and peripheral artery tonometry (PAT) are commonly used methods for assessing endothelial function in a research setting but it is unclear how well they correlate. This study aimed to compare and correlate these methods in patients with peripheral arterial disease (PAD) and in healthy individuals.

Materials And Methods: FMD and PAT measurements were obtained as samples of convenience from 26 patients with PAD and 25 healthy subjects.

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Purpose: The aim of this study was to test the hypothesis that postexercise cold-water immersion (CWI, via its associated reductions in skeletal muscle blood flow) attenuates muscle glycogen resynthesis during short-term recovery from exhaustive exercise.

Methods: In a repeated-measures design, nine recreationally active men performed an exhaustive glycogen depleting cycling protocol (consisting of intermittent exercise the night before and steady-state exercise on the subsequent morning of the main trial) followed by 10 min of lower-limb CWI (8°C) or remained seated in normal ambient conditions (CONT). Subjects were fed carbohydrate (CHO) at an ingestion rate of 0.

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Metastatic carcinomas involving the lung are a common specimen encountered in surgical pathology. These metastases may have different morphologic, and architectural patterns and may mimic primary pulmonary adenocarcinoma, especially the intra-alveolar (lepidic) pattern of spread which may simulate a primary pulmonary bronchioloalveolar carcinoma (adenocarcinoma in situ). We present the case of a metastatic pancreatic adenocarcinoma that morphologically mimicked bronchioloalveolar carcinoma of the lung in that the tumor had an exclusive intra-alveolar pattern of spread and had an immunophenotype that was noninformative as to the site of origin (cytokeratin 7+, cytokeratin 20-, TTF-1-).

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Hyper-IgG4 disease is a rare systemic disorder that usually affects middle age males. It is characterized by elevated serum IgG4 levels and infiltration of organs by IgG4 positive plasma cells associated with fibrosis. Patients usually present with mass or masses in the involved organ that mimic neoplasia.

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Background: Long Lasting Insecticidal Nets (LLIN) and Indoor Residual Spraying (IRS) have both proven to be effective malaria vector control strategies in Africa and the new technology of insecticide treated durable wall lining (DL) is being evaluated. Sustaining these interventions at high coverage levels is logistically challenging and, furthermore, the increase in insecticide resistance in African malaria vectors may reduce the efficacy of these chemical based interventions. Monitoring of vector populations and evaluation of the efficacy of insecticide based control approaches should be integral components of malaria control programmes.

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Article Synopsis
  • * Significant reductions in mosquito populations, malaria infections, and immune responses were recorded, particularly where long-lasting insecticide-treated nets (LLIN) and insecticide-treated plastic sheeting (ITPS-ZF) were used together.
  • * Findings suggest that using a combination of vector control methods is more effective in reducing malaria risks than using a single method, indicating a need for broader application of this strategy.
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Objective: The risk for early and late seizures after aneurysmal subarachnoid hemorrhage (aSAH), as well as the effect of antiepileptic drug (AED) prophylaxis and the influence of treatment modality, remain unclear. We conducted a systematic review of case series and randomized trials in the hope of furthering our understanding of the risk of seizures after aSAH and the effect of AED prophylaxis and surgical clipping or endovascular coiling on this important adverse outcome.

Methods: We performed a MEDLINE (1985-2011) search to identify randomized controlled trials and retrospective series of aSAH.

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Ligands acting on receptors are considered to induce a conformational change within the ligand-binding site by interacting with specific amino acids. In this study, tyrosine 102 (Y102) located in the GABA binding site of the ρ(1) subunit of the GABA(C) receptor was mutated to alanine (ρ(1Y102A)), serine (ρ(1Y102S)), and cysteine (ρ(1Y102C)) to assess the role of this amino acid in the action of 12 known and 2 novel antagonists. Of the mutated receptors, ρ(1Y102S) was constitutively active, providing an opportunity to assess the activity of antagonists on ρ(1) receptors with a proportion of receptors existing in the open conformational state compared to those existing predominantly in the closed conformational state.

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A double-blind phase III malaria prevention trial was conducted in two refugee camps using pre-manufactured insecticide-treated plastic sheeting (ITPS) or untreated polyethylene sheeting (UPS) randomly deployed to defined sectors of each camp. In Largo camp the ITPS or UPS was attached to inner walls and ceilings of shelters, whereas in Tobanda the ITPS or UPS was used to line only the ceiling and roof. In Largo the Plasmodium falciparum incidence rate in children up to 3 years of age who were cleared of parasites and monitored for 8 months was 163/100 person-years under UPS and 63 under ITPS (adjusted odds ratio [AOR] = 0.

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A unique case of IgG4(+) sclerosing disease was diagnosed in the sphenoid sinus, a previously unreported location, and was treated in a novel manner. This study describes the clinical presentation and management of IgG4 sclerosing disease in the paranasal sinuses. A retrospective case review and review of the medical literature were performed.

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A total of 876 nets (229 Interceptor(®), 363 Olyset(®), and 284 PermaNet(®)) were collected 14 months post-distribution of long-lasting insecticidal nets (LLINs) from 811 households of internally displaced and host communities in Dar Sila District in eastern Chad to examine their physical condition. Holes were recorded by using three hole categories (average diameter = 2, 3.5, and 15 cm) and a Proportionate Hole Index (pHI).

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During immune responses, naive CD4+ T cells differentiate into several T helper (TH) cell subsets under the control of lineage-specifying genes. These subsets (TH1, TH2 and TH17 cells and regulatory T cells) secrete distinct cytokines and are involved in protection against different types of infection. Epigenetic mechanisms are involved in the regulation of these developmental programs, and correlations have been drawn between the levels of particular epigenetic marks and the activity or silencing of specifying genes during differentiation.

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This study investigated the frequency of an accessory pudendal artery in 15 adult cadavers fixed with formaldehyde solution. The prevalence of accessory pudendal artery varies between 7 and 75% according to the method of identification (imaging studies, microstereoscopic cadaveric dissection, and open and laparoscopic surgeries). Currently, under discussion is the role of this artery in postprostatectomy erectile dysfunction.

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Dendritic cells (DCs) are specialized antigen presenting cells that are exquisitely adapted to sense pathogens and induce the development of adaptive immune responses. They form a complex network of phenotypically and functionally distinct subsets. Within this network, individual DC subsets display highly specific roles in local immunosurveillance, migration, and antigen presentation.

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A 16-year-old man with splenomegaly presented with ascites and bilateral leg eschars. Although he had intermittently elevated absolute monocyte counts, a diagnosis of juvenile myelomonocytic leukemia (JMML) was discounted because of his age and lack of persistent leukocytosis. Detailed examination demonstrated features consistent with Noonan syndrome (NS), including typical facies, growth retardation, a cardiac defect, and a history of a coagulopathy.

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Magnesium deficiency, and to a lesser extent magnesium excess, is commonly encountered in patients admitted to the Acute Medical Unit. It is important that acute physicians are able to identify those at risk of these states and initiate appropriate investigation and treatment. This article aims to provide the reader with a sound understanding of magnesium physiology and its effect at a cellular level.

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Background: A low-lying placenta detected at the mid-pregnancy ultrasound is commonly reported to warn against potential morbidity associated with placenta praevia. There is no information on what distance away from the internal cervical os is safe.

Aims: We examined whether a low-lying placenta not overlapping the cervical os in the second trimester increases the risk of obstetric complications and whether there is a cut-off point at which that increase occurs.

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Background: Malaria is endemic to Indonesia. However, there are few prevalence data available from Aceh Province because of the long-standing separatist conflict and decentralization of the public health system. The Mentor Initiative, which specializes in malaria control in humanitarian emergencies, was one of the non-governmental organizations to respond to the 2004 Indian Ocean tsunami in Aceh.

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Background: Nasal H(3) receptors might have a role in mediating the effects of histamine in patients with allergic rhinitis.

Objective: This study explored the effect of the potent oral H(3) receptor antagonist PF-03654746 in combination with an oral H(1) receptor antagonist on the objective (acoustic rhinometry) and subjective (symptoms) responses to nasal allergen challenge.

Methods: Twenty patients with out-of-season allergic rhinitis displaying a 30% or greater decrease in minimum nasal cross-sectional area (A(min)) after bolus (ragweed) complete nasal allergen challenge at screening were studied by using a randomized, double-blind, single-dose, 4-way crossover design.

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Effectiveness of providing health education solely via mass media and the providers' targeted training in malaria control needs further exploration. During pre-epidemic season, we conducted a qualitative study of 40 providers and community leaders using focus groups, comprehensive semi-structured interviews and consultation observations. Interviews were transcribed, coded and analysed for major themes.

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Introduction: Recently the palliative care literature has emphasized the need for 24-hour telephone advice and support for patients during the last year of life. As some health professionals may lack skills and knowledge regarding palliative care issues, an out-of-hours (OoH) advice line is considered a valuable resource. This report provides an analysis of both qualitative and quantative data concerning the Mount Vernon Cancer Network telephone advice line (TAL) for 2008-2010.

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