(c)

2012 Elsevier B V All rights reserved “
“The sy

(c)

2012 Elsevier B.V. All rights reserved.”
“The synthetic similar to 5 kDa ABP (amyloid-g binding peptide) consists of a region of the 228 kDa human pericentrioloar material-1 (PCM-1) protein that selectively and avidly binds in vitro A beta(1-42) oligomers, believed to be key co-drivers of Alzheimer’s disease (AD), but not monomers (Chakravarthy et al., (2013) [3]). ABP also prevents A beta(1-42) from triggering the apoptotic death of cultured human SHSY5Y neuroblasts, likely by sequestering A beta oligomers, suggesting selleck chemical that it might be a potential AD therapeutic. Here we support this possibility by showing that ABP also recognizes and binds A beta(1-42) aggregates in sections of cortices and hippocampi from brains of AD transgenic mice and human AD patients. More importantly, ABP targets A beta(1-42) aggregates when microinjected into the hippocampi of the brains of live AD transgenic mice. Crown Copyright (C) 2014 Published selleck inhibitor by Elsevier Inc. All rights reserved.”
“The trail-following pheromone and sex pheromones were investigated in the Indomalayan termite Hodotermopsis sjoestedti

belonging to the new family Archotermopsidae.\n\nGas chromatography coupled to mass spectrometry (GC-MS) after solid phase microextraction (SPME) of the sternal gland secretion of pseudergates and trail-following bioassays demonstrated that the trail-following pheromone of H. sjoestedti was syn-4,6-dimethylundecan-1-ol, a new chemical structure for termite click here pheromones. GC-MS after SPME of the sternal gland secretion of alates also allowed the identification of sex-specific compounds. In female alates, the major sex-specific compound

was identified as (5E)-2,6,10-trimethylundeca-5,9-dienal, a compound previously identified as the female sex pheromone of the termite Zootermopsis nevadensis. In male alates, the major sex-specific compound was identified as syn-4,6-dimethylundecanal, a homolog of syn-4,6-dimethyldodecanal, which has previously been confirmed as the male sex pheromone of Z. nevadensis. The presence of sex-specific compounds in alates of H. sjoestedti strongly suggests for this termite the presence of sex-specific pairing pheromones which were only known until now in Z. nevadensis. Our results showed therefore a close chemical relationship between the pheromones of the taxa Hodotermopsis and Zootermopsis and, in contrast, a clear difference with the taxa Stolotermes and Porotermes, which is in total agreement with the recent creation of the families Archotermopsidae and Stolotermitidae as a substitute for the former family Termopsidae. (C) 2011 Elsevier Ltd. All rights reserved.”
“In recent years, a considerable number of new sporadic or hereditary small artery diseases of the brain have been detected which preferably occur in younger age, below 45 years. Cerebral microangiopathies constitute an appreciable portion of all strokes.


“Conventional diagnosis of infectious diarrhea caused by b


“Conventional diagnosis of infectious diarrhea caused by bacteria is time-consuming, labor-intensive, and has a suboptimal sensitivity. We have therefore developed a multiplex real-time polymerase chain reaction (PCR) for the simultaneous detection of Campylobacter jejuni, Salmonella spp., Shigella spp./enteroinvasive Escherichia coli (EIEC), and Yersinia enterocolitica in

Roscovitine fecal samples. No cross reactivity between the different pathogens was observed, and the multiplex setup of the assay did not have an impact on the sensitivity of the PCR. The analytical sensitivity was 87 CFU/mL for C. jejuni, 61 CFU/mL for Shigella spp./EIEC, 5,528 CFU/mL for Salmonella spp., and 1,306 CFU/mL for Y. enterocolitica. An extensive validation of the assay was performed by testing 1,687 patient samples by both PCR and with conventional techniques. The use of PCR increased the overall clinical sensitivity from 78 to 100 % (p smaller than 0.0001), the specificity was 99.4 % for the PCR, compared with 99.9 % for conventional culture. The novel PCR assay allows for rapid, sensitive, inexpensive, and high-throughput testing of the most common bacterial causes of gastroenteritis.”
“BACKGROUND: Hypothermia may

be accidental or therapeutic. Therapeutic hypothermia is increasingly used as FG-4592 clinical trial treatment for various conditions, e.g., neuroprotection after cardiac arrest. Hypothermia leads to an impairment of the coagulation system, but the degree of impairment has been difficult to determine. Most studies have been performed on plasma instead of whole blood. We therefore evaluated whole blood investigating the effects of hypothermia on the coagulation system over a wide range of temperatures (25-40 degrees C).\n\nMETHODS: Blood was drawn from six healthy volunteers into citrated test tubes. Samples were then placed in water baths with temperatures ranging from 25 to 40 degrees C for 30 min before the coagulation system was studied using rotational thromboelastometry. www.selleckchem.com/products/BEZ235.html A

contact activator (Ellagic acid) was used for initiation of coagulation. Clotting time, clot formation time, a angle, and maximum clot strength were measured. All tests were run for 60 min and they were performed at the same temperature as the temperature in the water bath.\n\nRESULTS: Coagulation was increasingly impaired with decreasing temperatures in the temperature range studied. All variables measured were significantly impaired in a stepwise pattern (P < 0.0001).\n\nCONCLUSIONS: Evaluation using a whole blood analysis shows that hypothermia progressively impairs the coagulation system.”
“A usual approach to detect the spatial footprint left by recent adaptive events has been to follow up putative candidates emerging from multilocus scans of variation by sequencing additional fragments. We have used a similar experimental and analytical approach to study variation at 15 independently evolving and randomly chosen regions of the X chromosome of Drosophila melanogaster.

A research nurse classified all medication errors by stage and ty

A research nurse classified all medication errors by stage and type of error.\n\nResults The authors identified 1205 medication errors with minimal potential for harm (rate: 68% of patients, 95% CI 64 to 72%; 53% of Rx, 95% CI 50 to 56%) and 464 potentially harmful medication errors (ie, near misses) (rate: 26% of patients, 95% CI 24 to 28%; 21% of Rx, 95% CI 19 to 22%). Overall, 94% of the medication errors with minimal potential for harm and 60% of the near misses

occurred at the prescribing stage. The most DAPT price common types of errors were inappropriate abbreviations followed by dosing errors. The most frequent cause of errors was illegibility.\n\nConclusion With paper prescribing, half the prescriptions had medication errors, and one in five

had a potentially harmful error. These rates are very high. Interventions targeting the ordering and administration stages have the greatest potential benefit.”
“Melanization is an innate immune response in arthropods that encapsulates and kills invading pathogens. One of its rate-limiting steps is the activation of prophenoloxidase (PPO), which is controlled by an extracellular proteinase cascade and serpin inhibitors. The molecular composition of this system is largely unknown in mosquitoes with the exception of serpin-2 (SRPN2), which was previously identified as a key negative regulator of melanization. Using reverse genetic and biochemical techniques, we identified CBL0137 the Anopheles gambiae clip-serine proteinase CLIPB9 as a PPO-activating proteinase, which is inhibited by SRPN2. Double

knockdown of SRPN2 and CLIPB9 reversed the pleiotrophic phenotype induced by SRPN2 silencing. This study identifies the first inhibitory serpin-serine proteinase pair in mosquitoes and defines a regulatory unit of melanization. Additionally, the interaction of CLIPB9 and SRPN2 affects the life span of adult female mosquitoes and therefore constitutes a well-defined potential learn more molecular target for novel late-life acting insecticides.”
“In a search for GABA(A) alpha 5 ligands that combine high subtype binding selectivity with a marked inverse agonism imidazo[1,5-a][1,2,4]-triazolo[1,5-d][1,4]benzodiazepines were identified as a promising class. A short tandem reaction allowed rapid access to this chemical series, thereby facilitating rapid SAR generation which guided the optimization process. Two compounds (10e and 11f) were found to be active in an in vivo paradigm for cognitive improvement. (C) 2009 Elsevier Ltd. All rights reserved.”
“Background: The occurrence of thyroid carcinoma in patients with congenital hypothyroidism (CH) caused by dyshormonogenesis is very rare, and has only been reported in one patient harboring mutations in the thyroid peroxidase (TPO) gene.\n\nPatient Findings: We report on a 29-year follow-up of two consanguineous siblings with CH due to total iodide organification defect who also had sensorineural hearing loss.

05) Our results confirm

05). Our results confirm selleck screening library the importance of hunting stress on meat quality and lipid stability. The multivariate regression analysis showed a high correlation (R-2=0.968) between the predicted and measured thiobarbituric acid-reactive substances (TBARS) values, suggesting

that visible spectroscopy should prove useful for predicting meat oxidation.”
“In view of the increasing incidences of arsenic induced health effects and the vulnerability of the developing brain to its toxic effects, studies have been carried out to investigate the mechanism of arsenic induced cholinergic alterations and understand if such changes are persistent or transient on withdrawal of arsenic exposure. Male rats were exposed to arsenic (2 mg/kg or 4 mg/kg body weight, p.o) from post-lactational day (PD)22 to PD59, and the effect on selected behavioral and neurochemical end points associated with cholinergic functions was assessed on PD60 and PD90. Decrease in CP-456773 chemical structure the binding of muscarinic-cholinergic receptors in frontal cortex (26%, 43%) and hippocampus (21%, 34%) associated with reduced CHRM2 mRNA levels, acetylcholinesterase activity and expression of ChAT and PKC beta-1 was observed in arsenic

exposed rats on PD60 as compared to controls. Spatial learning and memory and muscle strength were affected following arsenic exposure in rats on PD60 and associated with arsenic induced cholinergic alterations. Enhanced oxidative stress associated EPZ5676 clinical trial with increased expression of proapoptotic proteins and decreased expression of anti-apoptotic proteins was distinct in both frontal cortex and hippocampus following arsenic exposure in rats on PD60. The cholinergic alterations and other neurochemical modifications

were found to be linked with increased arsenic levels in frontal cortex (1.39, 3.90-fold) and hippocampus (3.23, 5.48-fold) on PD60. Although a trend of recovery was observed both in behavioral and neurochemical endpoints on withdrawal of arsenic exposure on PD90, the results indicate that continuous arsenic exposure may have detrimental effects. (C) 2014 ISDN. Published by Elsevier Ltd. All rights reserved.”
“Pharmacogenetic studies have confirmed that the genetic variant of the casein kinase 1 epsilon (Csnk1 epsilon) gene contributes to response variability to amphetamine and methamphetamine in both mice and humans. A polymorphism in the Csnk1 epsilon gene has been reported to be associated with heroin dependence. In this study, to identify markers contributing to the genetic susceptibility of the Csnk1 epsilon gene to heroin dependence, we examined the potential association between heroin dependence and 14 single nucleotide polymorphisms (SNPs; rs1997644, rs135764, rs867198, rs135763, rs135757, rs6001090, rs5750581, rs1534891, rs1005473, rs3890379, rs2075984, rs2075983, rs135749, and rs135745) of the Csnk1 epsilon gene using the MassARRAY system.

Moreover, in the ischemia/reperfusion groups, acute inflammatory

Moreover, in the ischemia/reperfusion groups, acute inflammatory processes such as neutrophil adhesion and migration, apoptotic and degenerative cells, stroma I oedema and haemorrhage – were present. However, the ovarian tissues of the IR + GH (1 mg) group had minimal apoptotic learn more cells, and the IR + GH (2 mg) group had no apoptotic cells. In addition, the general ovarian histological structures of these groups were similar to those of the healthy

control group.\n\nConclusions: The administration of GH is protective against ischemia and/or ischemia/reperfusion-induced ovarian damage. This protective effect can be attributed to the antioxidant properties of GH. (C) 2011 Elsevier Ireland Ltd. All rights reserved.”
“Incidence of peripheral nerve injury in extremity trauma is low, with reported rates of 1.5 to 2.8%; however there is significant associated morbidity and outcomes of peripheral nerve repair are poor, especially when delayed. In this article, we provide a brief review of pathophysiology, classification, and surgery of peripheral nerve injuries, with special emphasis on wartime see more injuries.”
“Perinatal asphyxia is an important cause

of neonatal morbidity and mortality. Hypothermia is an effective treatment of neonatal hypoxic-ischemic encephalopathy in infants. Cold agglutination is a primary or acquired autoimmune disease that involves autoantibodies that lead to hemagglutination at low temperatures lower than that of the body. In this case the importance of cold

agglutinins during therapeutic hypothermia is presented.”
“To examine the relationship between tibiofemoral and patellofemoral joint articular MDV3100 datasheet cartilage and subchondral bone in the medial and gait biomechanics following partial medial meniscectomy.\n\nFor this cross-sectional study, 122 patients aged 30-55 years, without evidence of knee osteoarthritis at arthroscopic partial medial meniscectomy, underwent gait analysis and MRI on the operated knee once for each sub-cohort of 3 months, 2 years, or 4 years post-surgery. Cartilage volume, cartilage defects, and bone size were assessed from the MRI using validated methods. The 1st peak in the knee adduction moment, knee adduction moment impulse, 1st peak in the knee flexion moment, knee extension range of motion, and the heel strike transient from the vertical ground reaction force trace were identified from the gait data.\n\nIncreased knee stance phase range of motion was associated with decreased patella cartilage volume (B = -17.9 (95 % CI -35.4, -0.4) p = 0.045) while knee adduction moment impulse was associated with increased medial tibial plateau area (B = 7.7 (95 % CI 0.9, 13.3) p = 0.025). A number of other variables approached significance.

Men seem to be at higher risk for DI than women Scoring system u

Men seem to be at higher risk for DI than women. Scoring system used in this study for prediction of DI may be useful in this patient population.”
“Objective De-identified clinical data in standardized form (eg, diagnosis codes),

derived from electronic medical records, are increasingly combined with research data (eg, DNA sequences) and disseminated to enable scientific investigations. This study examines whether released data can be linked with identified clinical records that are accessible via various resources to jeopardize patients’ anonymity, and the ability of popular privacy protection methodologies to prevent such an attack.\n\nDesign The study experimentally evaluates the re-identification risk of a de-identified sample of Vanderbilt’s patient records involved in a genome-wide association study. It also measures the level of protection Buparlisib from re-identification, Stem Cell Compound Library concentration and data utility, provided by suppression and generalization.\n\nMeasurement Privacy protection is quantified using the probability of re-identifying a patient in a larger population through diagnosis codes. Data utility is measured at a dataset level, using the percentage

of retained information, as well as its description, and at a patient level, using two metrics based on the difference between the distribution of Internal Classification of Disease (ICD) version 9 codes before and after applying privacy protection.\n\nResults More than 96% of 2800 patients’ records are shown to be uniquely identified by their diagnosis codes with respect to a population of 1.2 million patients. Generalization is shown to reduce further the percentage of de-identified records by less than 2%, and over 99% of the three-digit ICD-9 codes need to be suppressed to prevent re-identification.\n\nConclusions Popular privacy protection methods

are inadequate to deliver a sufficiently protected and useful result when sharing data derived from complex clinical systems. The development of alternative privacy protection models is thus required.”
“Hoeger Bement MK, Weyer A, Hartley S, Drewek B, Harkins AL, Hunter SK. Pain perception after isometric exercise in women with fibromyalgia. Arch Phys Med Rehabil 2011;92:89-95.\n\nObjective: The GW4869 mouse purpose of this study was to identify exercise protocols incorporating isometric contractions that provide pain relief in women with fibromyalgia.\n\nDesign: A before-after trial.\n\nSetting: A physical therapy department in an academic setting.\n\nParticipants: Fifteen women (mean +/- SD, 52 +/- 11y) with fibromyalgia.\n\nInterventions: Subjects completed 4 sessions: 1 familiarization and 3 experimental. The following randomized experimental sessions involved the performance of isometric contractions with the elbow flexor muscles that varied in intensity and duration: (1) 3 maximal voluntary contractions (MVCs), (2) 25% MVC held to task failure, and (3) 25% MVC held for 2 minutes.

Immunohistochemical analysis of tissue for evidence of DNA strand

Immunohistochemical analysis of tissue for evidence of DNA strand breaks via terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay was performed. The experimental release curves showed mass flow rates of 36 mu g/h for single-orifice

devices and an 88 mu g/h mass flow rate for multiple-orifice devices loaded with temozolomide. In vivo efficacy results showed that localized intracranial delivery of temozolomide from microcapsule devices was capable of prolonging animal survival and may offer BEZ235 a novel form of treatment for brain tumors. (C) 2010 Elsevier Ltd. All rights reserved,”
“Overexpression of JAB1 is observed in a variety of human cancers, but how JAB1 is involved in tumor development remained to be investigated. Here we analyzed mice with modified Jab1 expression. Mice ectopically expressing a more stable form of JAB1 protein under the control of a constitutive promoter were rescued from the embryonic lethality this website caused by the Jab1(-/-) allele and developed a myeloproliferative disorder in a gene dosage-dependent manner. Hematopoietic cells from the bone marrow of Jab1 transgenic mice had a significantly larger stem cell population and exhibited higher and transplantable proliferative potential. In contrast, Jab1(-/-) mice, which express similar to 70% as much JAB1 protein as their wild-type littermates, showed inefficient hematopoiesis. Expression of the tumor suppressor p16(INK4a)

was inversely correlated with that of JAB1, and the oncoprotein

SMYD3, a newly identified JAB1 interactor, suppressed MEK inhibitor transcription of p16 in cooperation with JAB1. Thus, the expression and function of JAB1 are critical for the proliferation and maintenance of hematopoietic progenitors.”
“Recently, a new FDA-cleared battery powered bone marrow biopsy system was developed to allow operators access to the bone marrow space quickly and efficiently. A pre-clinical evaluation of the device (OnControl, Vidacare Corporation, San Antonio, TX, USA) on anesthetized pigs was conducted, in addition to a clinical evaluation in hematology clinic patients requiring a bone marrow biopsy. Twenty-six samples were collected from the swine model. No cellular artifact or thermal damage was reported in any of the samples obtained. For the clinical evaluation of the device, 16 patients were recruited. Mean time from needle contact with skin to needle removal was 38.5 +/- 13.94 seconds. No complications were reported. In this study, the manual and powered samples were equivalent in specimen quality. In the patients evaluated, the device was safe, easy to use and the mean procedural time was significantly faster than previously reported with a manual technique.”
“Background: The advent of molecular biology techniques and constant increase in availability of genetic material have triggered the development of many phylogenetic tree inference methods.


“The aim of this study is to evaluate the toxicity of nano


“The aim of this study is to evaluate the toxicity of nanoparticles of poly(D, L-lactic acid) (PLA) or poly(D, L-lactic-co-glycolic acid) (PLGA) covered by chemically esterified amphiphilic hyaluronate (HA) which will be used for intra-articular injection as a drug carrier for the treatment of arthritis (RA) and/or osteoarthritis (OA). PLA and PLGA are FDA

approved polymers that are already used for the preparation of nano or microparticles. HA is a natural polysaccharide already present in the articulations known to interact with the CD44 receptors of the cells (especially chondrocytes). Therefore, we can envisage that the HA covering can improve the interactions between the cells and the nanoparticles, leading to better targeting or biodistribution. The knee of healthy male rats was injected one to two times weekly, with various Cell Cycle inhibitor concentrations of nanoparticles encapsulating Dextran-FITC. The synovial membranes and the patellae were collected aseptically and histologically analyzed to assess the effects and localization of the nanocapsules in the knee joint. We did not observe significant find more modifications in the synovial membranes (weak hyperplasia) or patellae integrity after local administration of nanodevices into the rats. While

we found some nanoparticles in the synovial membrane, none were detected in the patellae. Moreover, the histological observations for patellae were confirmed by radiosulfate intake, which depicted no decrease in proteoglycans biosynthesis in nanoparticles treated animals. Concerning the safety towards synovial membranes, we also had a look at the inflammatory response after injections of nanoparticles covered by amphiphilic HA or polyvinyl alcohol (PVA) by monitoring the mRNA expression levels of some specific early cytokines (IL-1 beta and TNF-alpha). Once again, no differences were observed between the control rats and the rats treated with nanoparticles. Considering these preliminary results obtained in healthy rats, we can establish that neither

the amphiphilic HA-covered PLGA nanoparticles nor their degradation products learn more induce major modifications of articular tissues functions, while injected into the knee of healthy rats. These results should be confirmed in OA or RA rat models, in order to confirm that nanoparticles do not worsen already altered (degenerative or inflamed) articular tissues. Once confirmed, such tuneable nanoparticles could be proposed as a safe drug delivery system for the treatment of articular disease, allowing a wide range of encapsulating molecules.”
“The concept of a gas-assisted polymer melt electrospinning process is presented. This technique allows for reduced quenching of the melt jet in the spinning region, and thus increasing the jet attenuation rate and resulting in production of sub-micron scale fibers.

In our study, we included patients virologically suppressed ( big

In our study, we included patients virologically suppressed ( bigger than = 1 year), on antiretroviral therapy, without concomitant major neurocognitive confounders, receiving boosted lopinavir or darunavir as monotherapy (n=96) or as triple therapy with two nucleoside reverse transcriptase inhibitors (n=95). All patients underwent a comprehensive neuropsychological test battery (14 neuropsychological measures, covering seven domains). Both groups were compared in average score distributions and rates of neuropsychological

deficits. Similar comparisons were conducted only for patients with neurocognitive impairment. In the adjusted analysis, we found only small differences between groups in the entire sample: better verbal learning (p=0.02; d=0.28) and verbal recall scores (p smaller than buy Adriamycin 0.01; d=0.25) in patients on boosted protease inhibitor monotherapy and slightly better

motor skills with dominant hand (p=0.02; d=0.23) scores in patients on triple therapy. No greater proportion of deficits in the protease inhibitor monotherapy group was found in any neuropsychological measure. In neurocognitively impaired patients, we found similar outcomes in verbal learning, verbal recall, and motor skills with dominant hand but with larger effect sizes. Close similarities in the neurocognitive pattern between groups question the clinical relevance of the number of neuroactive AZD1208 chemical structure drugs included in the regimen. These results also suggest that peripheral viral load control may be a good indicator of brain protection.”
“Background: The use of acellular dermal matrices has become increasingly popular in immediate and delayed tissue expander/implant-based breast reconstruction. However, it is unclear whether their use is associated with increased postoperative complication rates. Using the American College of Surgeons National Surgical Quality Improvement Program database, the authors assessed baseline differences in demographics

and comorbidities with and without acellular dermal matrix and determined whether postoperative complication rates varied. Methods: Fludarabine in vitro Using the national surgical database (2005 to 2011), tissue expander/implant-based breast reconstruction cases were extracted using Current Procedural Terminology codes. Differences in preoperative demographics and comorbidities were assessed using chi-square and t test analysis using SPSS. The authors analyzed variations in complication rates and determined whether demographics and comorbidities affected outcomes using multivariate logistical analysis. A post hoc power study was calculated. Results: Of 19,100 cases, 3301 involved acellular dermal matrix use. Overall complication rates were not statistically significant (acellular dermal matrix, 5.3 percent; non-acellular dermal matrix, 4.9 percent; p = 0.396). Several risk factors were statistically significant associated factors of complications.


“Companies developing and commercializing Healthcare IT ap


“Companies developing and commercializing Healthcare IT applications may decide to involve the users in the software development lifecycle in order to better understand the users’ needs and to optimize their products. Unfortunately direct developers-users dialogues are not sufficient to ensure a proper understanding of the users’ needs. It is

also necessary to involve human factors specialists to analyze the users’ expression of their needs and to properly formalize the requirements for design purposes. The objective of this paper is to present a case study reporting the collaborative work between HF experts and a company developing and commercializing a CPOE. This study shows how this collaboration C59 cost helps resolve the limits of direct users involvement and usual problems pertaining to users’ needs description and understanding.\n\nMethod: The company participating in the study has implemented a procedure to convene regular meetings allowing direct exchanges between the development team and users’

representatives. Those meetings aim at getting users’ feedbacks on the existing products and at validating further developments. In parallel with usual HF methods supporting the analysis of the work system (onsite observations followed by debriefing interviews) and the usability evaluation of the application (usability inspection and usability tests), HF experts took the opportunity of the meetings organized by the company to collect, re-interpret and re-formulate the needs

expressed by the users.\n\nResults: YH25448 cost The developers perceive the physicians’ requirements concerning the display of the patient’s list of medication as contradictory. In a previous meeting round the users had required a detailed view of the medication list against the synthesized existing one. Once this requirement satisfied, the users participating in the current meeting round require a synthesized view against the existing detailed one. The development team is unable to understand what they perceive as a reverse claim. Relying on a cognitive analysis of the physicians’ decision making concerning the patient’s treatment, this website the HF experts help re-formulate the physicians’ cognitive needs in terms of synthesized/detailed display of the medication list depending on the stage of the decision making process. This led to an astute re-engineering of the application allowing the physicians to easily navigate back and forth between the synthesized and detailed views depending on the progress of their decision making.\n\nConclusion: This study demonstrates that the integration of users’ representatives in the software lifecycle is a good point for the end users. But it remains insufficient to resolve the complex usability problems of the system. Such solutions require the integration of HF expertise.