To test the hypothesis that increased E1A transcription would lead to improved Ad11 4 replication in Ad5-sensitive (but Ad11-less sensitive) cells, two Ad11 mutants (Ad11-Ads-P and Ad11-Ad5-EP) were constructed where either the E1 A promoter or enhancer-promoter, respectively, was replaced by that of Ad5. Ad11-Ad5-EP demonstrated increased E1 A mRNA levels and replication, together with enhanced

oncolytic potency in vitro PD173074 purchase and in vivo. This effect was found in both the Ad5-sensitive and Ad11-sensitive cancer cells, broadening the range of tumors that could be effectively killed by Ad11-Ad5-EP.”
“Background. To investigate the function of tumor necrosis factor-alpha (TNF-alpha) during hepatocyte proliferation, we studied liver regeneration following partial hepatectomy in mice lacking type 1 TNF receptor (TNFR-1).\n\nMaterials and methods. TNFR-1 knockout (KO) and wild-type mice were subjected to partial (two-thirds) hepatectomy. Liver regeneration was evaluated by assessing liver weights and Ki67 immunohistochemistry. Riken complementary

DNA microarray analysis was performed for liver samples from Kinase Inhibitor high throughput screening mice undergoing partial hepatectomy to better compare different mouse partial hepatectomy models (TNFR-1 KO mice, KO group; and wild-type mice, W group).\n\nResults. Liver weight was regained after 14 days in the KO group, and after 7 days in the W group. Genes including lipopolysaccharide, toll-like receptor 4 precursor, mitogen-activated protein kinase kinase kinase 4, mitogen-activated protein kinase kinase kinase kinase 4, and mitogen-activated protein kinase 8-interacting protein were up-regulated in the KO group. As for the cell-cycle-regulated genes, the levels of cyclin D1, nuclear factor-kappa B light chain, and TNF receptor super family membrane

la were down-regulated in the KO group. Microarray analysis showed www.selleckchem.com/products/Y-27632.html decreased activities of the hexokinase- and phospho-fructokinase-related glycolytic pathways in the KO group.\n\nConclusions. These results contribute to the better understanding of the mechanisms of liver regeneration after partial hepatectomy in TNFR-1 KO mice. (C) 2009 Elsevier Inc. All rights reserved.”
“Purpose: Sunitinib malate (Pfizer, Inc.) is a multitargeted kinase inhibitor that inhibits vascular endothelial growth factor (VEGF) receptor (R)-1, 2 and 3, platelet-derived growth factor receptors (PDGFR)-alpha and beta, Flt3, RET, and Kit. Angiogenesis and VEGF expression correlate with poor outcomes in human urothelial carcinoma. We designed a preclinical study to examine the efficacy of sunitinib alone and in combination with cisplatin against human urothelial carcinoma.\n\nDesign: The in vitro activities of sunitinib and cisplatin alone and in combination were determined against human urothelial carcinoma cell lines, TCC-SUP and 5637. Antitumor activities were also determined in vivo against murine subcutaneous 5637 xenografts.

The symptomatology aggravated progressively Mixed Lineage Kinase inhibitor and the patient was admitted through ICU with

oligoanuria, severe dehydration and hydro-electrolytic and acid-base disturbances. Rectosigmoidoscopy revealed a giant villous adenoma at the rectum. Conservative therapy initially improved, and finally normalized renal function and made possible surgical resection of the tumor, with an excellent evolution afterwards. Conclusions: The McKittrick-Wheelock syndrome is a rare, life-threatening condition that requires interdisciplinary medical diagnosis and treatment, but has a good prognosis if renal function is recovered in time and makes possible curative tumoral resection.”
“Magnetic resonance imaging (MRI) is the examination method of choice for the diagnosis of a variety of diseases. MRI allows us to obtain not only anatomical information but also identification of physiological and functional parameters such as networks in the brain and tumor cellularity, which plays an increasing role in oncologic imaging, as well as blood flow and tissue perfusion. However, in many cases such as in epilepsy, degenerative

neurological diseases and oncological processes, additional metabolic and molecular information obtained by PET can provide essential complementary information for better diagnosis. The combined information obtained from MRI and PET acquired in a single imaging session allows a more accurate localization of pathological findings and better assessment of the underlying physiopathology, thus providing a more powerful diagnostic tool. Two hundred and twenty-one click here patients were scanned from April 2011 to January 2012 on a Philips Ingenuity TF PET/MRI system. The purpose of this review article is to provide an overview of the techniques used for the optimization of different protocols CB-839 clinical trial performed in our hospital by specialists in the following fields: neuroradiology, head and neck, breast, and prostate imaging. This paper also discusses the different problems encountered, such as the length of studies, motion artifacts, and accuracy of image fusion including physical and technical aspects, and the proposed

solutions.”
“We set out to highlight the significance of posterior symphyseal spurs as an unusual diagnostic possibility in athletes with chronic groin pain and to demonstrate that operative resection was successful in quickly and safely returning the patients to 3 sporting activities. Five competitive nonprofessional male athletes, three soccer players, and two marathon runners (median age: 30 [26/33] years), who presented to us with significant groin and central pubic pain with duration of at least 12 months, and who had failed conservative or surgical interventions (symphyseal plating), were evaluated. Physical examination as well as pelvic radiographs confirmed the diagnosis of posterior symphyseal spurs. Four out of five athletes underwent complete resection of the spur. Size of spurs was 2.2 (1.3/2.

“
“Purpose: To investigate whether intraoperative endolaser retinopexy around the sclerotomy site during pars plana vitrectomy can prevent the postoperative complication of retinal 3 detachment (RD).\n\nMethods:

Two hundred and seventy-eight patients who had undergone 20-gauge pars plana vitrectomy for various vitreoretinal disorders were investigated retrospectively. Patients who had rhegmatogenous RD and who underwent panretinal photocoagulation for diabetic buy NVP-LDE225 retinopathy were excluded. In Group 1, 152 patients had not undergone laser retinopexy around the sclerotomy site, and in Group 2, 126 patients had undergone laser retinopexy around the sclerotomy site. The incidence rates of postoperative RD were compared.\n\nResults: In Group 1, 7 cases (4.6%) of RD developed: 6 cases (3.9%) of sclerotomy-related retinal breaks, and 1 of a sclerotomy-unrelated retinal break. In Group 2, superior RD developed in 1 case (0.8%), but no sclerotomy-related retinal break was observed.\n\nConclusion: Endolaser

retinopexy around the sclerotomy site is relatively simple to perform, without inducing particular complications. GW4869 It is expected to reduce the development of postoperative RD (4.6% vs. 0.8%; P = 0.08) and especially sclerotomy-related RD (3.9% vs. 0%; P = 0.03). RETINA 31: 1772-1776, 2011″
“Introduction. It has been shown that obesity is a risk factor for Obstructive Sleep Apneas (OSA) and that it could be related to insulin resistance (IR).\n\nObjective. To establish the frequency of OSA in obese children and adolescents with suggestive symptoms of sleep disordered breathing (SDB) by polisomnografic study (PSG) and to clinically characterize the groups

with and without OSA, and their association with IR.\n\nPatients, material and methods. Descriptive, retrospective, cross-sectional study in patients with obesity and symptoms of SDB examined in the Hospital Nacional de Pediatria “Prof. Dr. Juan P. Garrahan” YAP-TEAD Inhibitor 1 clinical trial between october/2002 and july/2008 to whom PGS had been done.\n\nAnthropometric and oral glucose tolerance test data were obtained and indices of insulin resistance derived from the homeostatic model were calculated.\n\nWe assessed the presence of OSA defined as apnea-hypopnea Index >= 1 Student’s and Chi Square Tests were used, establishing a level of significance of 0.05.\n\nResults. A total of 58 children were studied (59% M), average age 8.8 +/- 3.5 and Score Z-IMC 2.8 +/- 0.7. In 55.2% of cases, OSA was confirmed, independently of the degree of obesity. 56.9% presented IR. The patients were divided in groups according to the presence or not of OSA. There were no significant differences in age nor in Score Z-IMC. The patients with OSA presented greater frequency of tonsil hypertrophy (p=0.01, OR= 6.86) and IR (p= 0.01, OR= 4,44) and less insulin sensitivity (p= 0.04).\n\nConclusions. Both IR and the presence of tonsil hypertrophy were predictors of OSA.

Methods: A cohort study was conducted Selleckchem BYL719 from over 5 years. A total of 59187 EMS transports of an Advanced Life Support (ALS) ambulance service were studied. Results: One hundred and three patient transports for allergic complaints were

analyzed. Fifteen patients received EMS epinephrine, and epinephrine was recommended for 2 additional patients who refused, for a total of 17 (17%) patients for whom epinephrine was administered or recommended. Emergency medical system epinephrine administration or recommendation was associated with venom as a trigger (29% vs 8%; odds ratio [OR], 4.70; 95% confidence interval [CI], 1.28-17.22; P = . 013), respiratory symptoms (88% vs 52%; OR, 6.83; 95% CI, 1.47-31.71; P = .006), and fulfillment of anaphylaxis diagnostic criteria (82% vs 49%; OR, 3.50; 95% CI, 0.94-13.2; P = .0498). Four (4%) patients received epinephrine after ED

arrival. Conclusion: Low rates of epinephrine administration were observed. The association of EMS administration of epinephrine BIBF 1120 inhibitor with respiratory symptoms, fulfillment of anaphylaxis diagnostic criteria, and low rate of additional epinephrine administration in the ED suggest that ALS EMS administered epinephrine based on symptom severity. Additional studies of EMS anaphylaxis management including ED management and outcomes are needed. (C) 2014 Elsevier Inc. All rights reserved.”
“Cell death in the germ line is controlled by both positive and negative mechanisms that maintain the appropriate number of germ cells and that prevent the possible formation of germ cell tumors. In the mouse embryo, Steel/c-Kit signaling is required to prevent migrating primordial germ cells (PGCs) from undergoing Bax-dependent apoptosis. In our current study, VX-770 cost we show that migrating PGCs also undergo apoptosis in Nanos3-null embryos. We assessed whether the Bax-dependent apoptotic pathway is responsible

for this cell death by knocking out the Bax gene together with the Nanos3 gene. Differing from Steel-null embryos, however, the Bax elimination did not completely rescue PGC apoptosis in Nanos3-null embryos, and only a portion of the PGCs survived in the double knockout embryo. We further established a mouse line, Nanos3-Cre-pA, to undertake lineage analysis and our results indicate that most of the Nanos3-null PGCs die rather than differentiate into somatic cells, irrespective of the presence or absence of Bax, In addition, a small number of surviving PGCs in Nanos3/Bax-null mice are maintained and differentiate as male and female germ cells in the adult gonads. Our findings thus suggest that heterogeneity exists in the PGC populations and that Nanos3 maintains the germ cell lineage by suppressing both Bax-dependent and Bax-independent apoptotic pathways. (C) 2008 Elsevier Inc. All rights reserved.

All rights reserved.”
“Objectives: To investigate auditory dysfunction in patients with tinnitus and normal hearing thresholds using two sensitive audiological measures. Design: The study was designed to investigate the characteristics of Audioscan and DPOAE tests in tinnitus patients with normal hearing thresholds. Rabusertib in vivo Audioscan and DPOAE notches were 3 analysed and compared. All tests were performed in a sound-treated chamber or in a sound-treated

room. Study sample: Forty-five tinnitus patients with normal hearing thresholds were examined following a written clinical protocol. Results: The averaged hearing levels obtained from tinnitus participants were significantly worse at high frequencies than those derived from BMS-754807 clinical trial the normative data. There was a significantly higher prevalence of Audioscan and DPOAE

notches, whose central frequencies matched tinnitus frequencies in the mid-frequency regions, but not in the low-and high-frequency regions. A significant correlation was found between the centre frequencies of the Audioscan notches and the DPOAE notches from 500 to 4000 Hz. Conclusion: Tinnitus in different frequency regions may be associated with different underlying mechanisms of tinnitus generation. Some negative results on the Audioscan and DPOAE notches matching tinnitus pitches may be due to a limited set of discrete frequencies used for the tinnitus pitch matching test.”
“Structural, spectroscopic and optical properties of lead tellurite glass ceramics doped with variable amounts of erbium ions and codoped with fixed amounts of silver (Ag2O or Ag metallic nanoparticles, AgNPs) have been studied. The investigation of the samples was performed by X-ray diffraction (XRD), Fourier transform infrared (FTIR), diffuse reflectance ultraviolet visible (DR-UV-vis) and photoluminescence (PL) spectroscopies. The average unit-cell parameter, crystallite size and the quantitative ratio of the crystallographic phases in the EMD 121974 samples were evaluated from the XRD data. FTIR spectroscopy data show that

the glass ceramics network mainly consists of TeO3 and TeO4 structural units. The increase of the Er2O3 content determines a TeO3 – bigger than TeO4 conversion but the process is also influenced by the nature of the codopant (Ag2O or AgNPs) present in the samples. The optical band gap (E-g(opt)) values, determined from the DR-UV vis spectra, decrease with increasing the erbium content of the samples. Photoluminescence spectroscopy measurements evidenced the important peaks located at around 430 nm and 708 nm due to the Pb2+ ions and at 525 and 547 nm due to the Er3+ ions present in the studied samples. The Er3+ :Ag codoping was found to produce antagonistic effects (quenching/enhancement) of the luminescence emission of Er3+ ions in the studied samples. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

These particles self-organize into hierarchically ordered supramolecular structures in the bulk For example, the Janus particle with isobutyl groups on one

POSS and carboxylic Momelotinib cost groups on the other self-assembles into a bilayered structure with head-to-head, tail-to-tail arrangements of each particle, which further organize into a three-dimensional orthorhombic lattice. While the ordered structure in the layers was lost upon heating via a first-order transition, the bilayered structure persisted throughout This study provides a model system of well-defined molecular Janus particles for the general understanding of their self-assembly and hierarchical structure formation in the condensed state.”
“Purpose: To develop a technique to monitor the dose rate in the urethra 3 during permanent implant brachytherapy using a linear MOSFET array, with sufficient accuracy and without significantly extending the implantation time.\n\nMethods and Materials: Phantom measurements were performed to determine the optimal conditions for clinical measurements. In vivo

measurements were performed in 5 patients during the (125)I brachytherapy implant procedure. To evaluate if the urethra dose obtained in the operating room with the ultrasound transducer in the rectum and the patient in treatment position is a reference for the total accumulated dose; additional measurements were performed after the implantation procedure, in the recovery room.\n\nResults: Selonsertib price In vivo measurements during Selleckchem PD0325901 and after the implantation procedure agree very well, illustrating that the ultrasound transducer in the rectum and patient positioning do not influence the measured dose in the urethra. In vivo

dose values obtained during the implantation are therefore representative for the total accumulated dose in the urethra. In 5 patients, the dose rates during and after the implantation were below the maximum dose rate of the urethra, using the planned seed distribution.\n\nConclusion: In vivo dosimetry during the implantation, using a MOSFET array, is a feasible technique to evaluate the dose in the urethra during the implantation of (125)I seeds for prostate brachytherapy. (C) 2009 Elsevier Inc.”
“Serotonergic neurons in the median raphe nucleus (MnR) are stimulated by alpha(1)-adrenergic agonists and inhibited by alpha(2) agonists. This study investigated the participation of MnR alpha(2)-adrenergic receptors in the control of anxiety-like behavior and feeding as an attempt to establish a functional association between these behaviors. The alpha(2)-adrenergic agonist clonidine (CLON) was injected into the MnR (0, 0.2, 2, 6, 20 nmol), into the pontine nucleus (Pn) or into the mesencephalic reticular formation (mRt) (0.2, 20 nmol) of free-feeding rats. The animals were exposed to the elevated plus-maze to evaluate spatial-temporal and ethological variables.

These compounds comprise a new class of promising broad-spectrum antibacterial and antifungal agents. (C) 2013 Elsevier Masson SAS. All rights reserved.”
“A novel human leukocyte antigen-C (HLA-C) allele, C*07:314, was identified in a French acute find more lymphoblastic leukemia patient.”
“Cluster

headache is a severely debilitating disorder that can remain unrelieved by current pharmacotherapy. Alongside ablative neurosurgical procedures, neuro modulatory treatments of deep brain stimulation (DBS) and occipital nerve simulation have emerged in the last few years as effective treatments for medically refractory cluster headaches. Pioneers in the field have sought to publish guidelines for neurosurgical treatment; however, only small case series with EPZ5676 manufacturer limited long-term follow-up have been published. Controversy remains over which surgical treatments

are best and in which circumstances to intervene. Here we review current data on neurosurgical interventions for chronic cluster headache focusing upon DBS and occipital nerve stimulation, and discuss the indications for and putative mechanisms of DBS including translational insights from functional neuroimaging, diffusion weighted tractography, magnetoencephalography and invasive neurophysiology. (C) 2008 Elsevier Ltd. All rights reserved.”
“Background\n\nSeveral metabolic derangements associated with diabetes 4 mellitus type 2 (DM) have been associated with a better outcome in amyotrophic lateral sclerosis (ALS), including hyperlipidemia and obesity. Here, we tested the hypothesis that DM would have

a positive effect on the motor and cognitive findings of ALS.\n\nMethods:\n\nWe compared data from ALS patients with pre-morbid DM (ALS-DM; n = 175) versus without DM (ALS; n = selleck 2196) with regard to the age of onset, rate of motor progression, survival, and neuropsychological test performance.\n\nResults:\n\nThe age of onset was later for women, Caucasians and patients with bulbar-onset ALS. However, we also found that after adjusting for gender, ethnicity and site of onset, DM was associated with a 4-year later onset of ALS (ALS = 56.3, ALS-DM = 60.3, P < 0.05).\n\nConclusion:\n\nDiabetes mellitus type 2 may delay the onset of motor symptoms in ALS. These findings support other studies suggesting a relationship between the pathophysiology of ALS and metabolic derangements. Further investigations are needed to ascertain whether manipulating metabolic parameters would improve outcomes in ALS.”
“Background: Gantenerumab is a fully human anti-A beta monoclonal antibody in clinical development for the treatment of Alzheimer disease (AD).\n\nObjectives: To investigate whether treatment with gantenerumab leads to a measurable reduction in the level of A beta amyloid in the brain and to elucidate the mechanism of amyloid reduction.

This study investigates the genome-wide DNA methylation profiles of the cortex from APP/PS1 transgenic mice and control mice using the Roche NimbleGen chip platform. Functional analysis selleck was then conducted by Ingenuity Pathways Analysis system. The methylated DNA fragments in the genome of each sample were enriched by MeDIP and the whole-genome interrogations

were hybridized to the Roche NimbleGen Human DNA Methylation 3×720 K CpG Island Plus RefSeq Promoter Array that cover 15,980 CpG islands and 20,404 reference gene promoter regions of the entire human genome. Analysis reveals 2346 CpG sites representing 485 unique genes as potentially associated with AD disease status pending confirmation in additional study. At the same time, these hyper-methylated genes display familial aggregation.

An impairment of the transforming growth factor-beta 1 (TGF-beta LY3023414 mw 1) signaling pathway has been demonstrated to be specific to the AD brain and, particularly, to the early phase of the disease, supporting a role for epigenetic change of TGF-beta 1 in AD pathology. In future research, we will focus on TGF-beta 1, as it appeared to be the most promising candidate for AD.”
“There are many studies investigating movement in individuals with hypermobile joints such that it is timely to systematically review the literature. This review concerns studies of lower limb tasks that compared kinematics and kinetics of hypermobile people with healthy controls. Its aims were to determine the quality of research NU7026 supplier completed so far and to collate what information is available regarding these factors in order to identify gaps in knowledge and provide direction for future research. A systematic search

of AMED, CINAHL, Embase and MEDLINE databases alongside hand searching identified six articles fulfilling the selection criteria. Quality was evaluated using a modified Downs & Black [1] ‘Quality Index’ checklist and data extraction undertaken. All six articles investigated gait. Two rated as low quality and four as moderate quality. One study was omitted from data extraction to avoid a possible duplication of results. Of the remaining studies, three investigated Generalised Joint Hypermobility and two investigated Joint Hypermobility Syndrome. Sixty seven different outcome measures were used across the studies to quantify differences in gait, and these are summarised. For some of the common factors studied, conflicting findings were reported. There is no convincing evidence that hypermobile gait differs from normal in a consistent manner, and in addition, confounding factors such as pain have not been addressed. Data-dredging may have been an issue in the reviewed articles, and future research would benefit by linking outcome measures to clinically relevant factors. There is a lack of research into any task other than gait. (C) 2015 Elsevier B.V.

It was reduced in older patients (Spearman r = -0.506, P < 0.001) and patients with a lower peak oxygen uptake (Spearman r = 0.432, P = 0.001). In children < 14 years, mental health was related to daily activity.\n\nConclusion Despite their diminished exercise capacity, Apoptosis Compound Library datasheet patients after TCPC show a fairly normal activity pattern. However, their activity depends not only on age, but also on exercise capacity, which, in contrast

to healthy people, decreases already from early adolescence on.”
“The structural and thermodynamic properties for charge symmetric and asymmetric electrolytes as well as mixed electrolyte system inside a charged cylindrical nanopore are investigated using a partially perturbative density functional theory. The electrolytes are treated in the restricted primitive model and the internal surface of the cylindrical nanopore is considered to Selleck MLN4924 have a uniform charge density. The proposed theory is directly applicable to the arbitrary mixed electrolyte solution containing ions with the equal diameter and different valences. Large amount of simulation data for ion

density distributions, separation factors, and exclusion coefficients are used to determine the range of validity of the partially perturbative density functional theory for monovalent and multivalent counterion systems. The proposed theory is found to be in good agreement with the simulations for both mono-and multivalent counterion systems. In contrast, find more the classical Poisson-Boltzmann equation only provides reasonable descriptions of monovalent counterion system at low bulk density, and is qualitatively and quantitatively wrong in the prediction for the multivalent counterion

systems due to its neglect of the strong interionic correlations in these systems. The proposed density functional theory has also been applied to an electrolyte absorbed into a pore that is a model of the filter of a physiological calcium channel. (C) 2009 American Institute of Physics. [doi:10.1063/1.3243873]“
“Lethal toxic encephalopathy due to shigellosis or Ekiri syndrome is a rare complication of shigellosis with a high fatality rate. Data are very limited on factors that can predict this encephalopathy, so we evaluated clinical and laboratory characteristics for these patients. In this study children with extreme toxicity and convulsions followed by rapid neurological deterioration resulting in brain edema and fatal outcome without sepsis and severe dehydration were selected as having lethal toxic encephalopathy. There were 1295 children with shigellosis during the 10 years of the study. Five children (0.4%) had lethal toxic encephalopathy due to shigellosis. Death occurred following rapid neurological detonation resulting in brain edema despite intensive treatment. Evidence of brain edema may be a prediction factor for death.

The purpose of this study was to identify candidate plasma biomarkers to aid in diagnosis of lung buy SNX-5422 cancer in at-risk individuals. We found increased expression of the CXC chemokine connective tissue-activating peptide (CTAP)-III from

plasma specimens of lung cancer patients compared to at-risk control subjects. Identification of the peptide was confirmed by the addition of an anti-NAP-2 antibody that recognizes CTAP-III and NAP-2. We also quantified and verified the increased levels of plasma CTAP-III with ELISA in patients with lung cancer (mean +/- SD, 1859 +/- 1219 ng/mL) compared to controls (698 +/- 434 ng/mL; P<0.001). Our findings demonstrate elevated plasma levels of CTAP-III occur in lung cancer patients. Further studies are required to determine if this chemokine could be utilized in a blood-based biomarker panel for the diagnosis of lung cancer.”
“Eggshells are typically considered to be garbage because they have no value as food but they favor microbial growth. Vast quantities of eggshell waste are available

from food processing, baking, and hatching industries. The present study provides a simple MG-132 chemical structure hydrothermal method to obtain high-purity hydroxyapatite (HA) nanoparticles from eggshells and three kinds of fruit waste extracts: grape, sweet potato, and pomelo peels. These synthesized nanoparticles have been characterized by X-ray 123 diffraction, Fourier transform infrared spectroscopy, and scanning electron microscopy studies. The results showed that hydrothermal reaction times and biomolecule amounts influenced product shape, product size, and synthetic HA crystal morphology. The HA taken from pomelo peelings exhibited good aspect ratios with physical shapes similar to those of the crystalline HA structures of natural human bone. HA synthesized from eggshell powders contains several important trace

elements, such www.selleckchem.com/products/gw4869.html as Na, Mg, and Sr. (C) 2013 Elsevier Ltd and Techna Group S.r.l. All rights reserved.”
“Technological advances in both hardware and software have made possible the realization of sophisticated biological imaging experiments using the optical microscope. As a result, modern microscopy experiments are capable of producing complex image datasets. For a given data analysis task, the images in a set are arranged, based on the requirements of the task, by attributes such as the time and focus levels at which they were acquired. Importantly, different tasks performed over the course of an analysis are often facilitated by the use of different arrangements of the images. We present a software framework that supports the use of different logical image arrangements to analyze a physical set of images. This framework, called the Microscopy Image Analysis Tool (MIATool), realizes the logical arrangements using arrays of pointers to the images, thereby removing the need to replicate and manipulate the actual images in their storage medium.