In this prospective multicenter pediatric encephalitis study cond

In this prospective multicenter pediatric encephalitis study conducted in Greece for 3 years, 42 cases were diagnosed and the presumptively or definitely causative pathogen was identified in 24 (57.1%). Leading pathogens included herpes

viruses (10 patients), enteroviruses (6), and Streptococcus pneumoniae (2). No fatalities were observed; however, deficits remained in 5 of 42 (11.9%) children.”
“The degradation and prestabilization of polyacrylonitrile (PAN) were investigated with differential BMN 673 concentration scanning calorimetry (DSC), thermogravimetric analysis (TGA), and Fourier transform infrared spectroscopy (FTIR). The initial temperature, initial loss-weight temperatures, and loss-weight were significantly lowered when ammonium itaconate (AIA) was used as comonomer. One exothermal peak of PAN (homopolymer) was shown in the DSC curves, while there were four exothermal peaks of poly(AN-AIA). FTIR spectra results confirm the degradation process of NH(4)(+)

groups. During the heating process, NH(4)(+) groups (3030 cm(-1)) were changed into NH(3)(+) (2955 cm(-1)) and then NH(2)(+) groups (2920 Navitoclax molecular weight cm(-1)). The dissociated H(+) could initiate the cyclization reactions of C equivalent to N companied with heat released. The effect of ammonia on degradation and prestabilization of PAN was also studied. It was found that ammonia could accelerate prestabilization of acrylic precursors. (C) 2010 Wiley Periodicals, Inc. J Appl Polym Sci 117: 1596-1600, 2010″
“Background: Spinal deformities are common in patients with

osteogenesis buy HM781-36B imperfecta, a heritable disorder that causes bone fragility. The purpose of this study was to describe the behavior of spinal curvature during growth in patients with osteogenesis imperfecta and establish its relationship to disease severity and medical treatment with bisphosphonates.

Methods: The medical records and radiographs of 316 patients with osteogenesis imperfecta were retrospectively reviewed. The severity of osteogenesis imperfecta Was classified with the modified Sillence classification. Serial curve measurements were recorded throughout the follow-up period for each patient with scoliosis. Regression analysis was used to determine the effect of disease severity (Sillence type), patient age, and bisphosphonate treatment on the progression of scoliosis as measured with the Cobb method.

Results: Of the 316 patients with osteogenesis imperfecta, 157 had associated scoliosis, a prevalence of 50%. Scoliosis prevalence (68%) and mean progression rate (6 degrees per year) were the highest in the group of patients with the most severe osteogenesis imperfecta (modified Sillence type III). A group with intermediate osteogenesis imperfecta severity, modified Sillence type IV, demonstrated intermediate scoliosis values (54%, 4 degrees per year).

Measured delivery profiles were comparable to prediction models

Measured delivery profiles were comparable to prediction models. Conclusions: We confirmed the hypothesis that delivery of one infused drug is transiently affected by starting or stopping a second drug infusion in the same line. The magnitude of the changes can be estimated quantitatively. The clinical impact depends

on the drugs being co-infused and patient sensitivity, but could be clinically important; the findings have safety implications for infused medication delivery 17DMAG price to critically ill or anesthetized children. We recommend minimizing infusion system dead volumes, connecting the most essential infusion(s) to the main fluid pathway as close as possible to the patient, and recognizing the potential for unintended alterations in delivery when multiple drugs co-infuse.”
“Autophagy is Selleckchem Mizoribine a catabolic membrane-trafficking process that leads to sequestration and degradation of intracellular material within lysosomes. It is executed at basal levels in every cell and promotes cellular homeostasis by regulating organelle and protein turnover. In response to various forms of cellular stress, however, the levels and cargoes of autophagy can be modulated. In nutrient-deprived states, for example, autophagy can be activated to degrade cargoes for cell-autonomous

energy production to promote cell survival. In other contexts, in contrast, autophagy has been shown to contribute to cell death. Given these dual effects in regulating cell viability, it is no surprise that autophagy has implications in both the genesis and treatment of malignant disease. In this review, we provide a comprehensive appraisal of the way in which oncogenes and tumour suppressor genes regulate autophagy. In addition, we address the current evidence from human cancer and animal models this website that has aided our understanding of the role of autophagy in tumour progression. Finally, the potential for targeting autophagy therapeutically is discussed in light of the functions of autophagy at different stages of tumour progression and in normal tissues.”
“Aim: We performed a retrospective audit of intravenous morphine infusion administered

to children in an effort to characterize the relationship between dose and age. Methods: A retrospective audit of morphine infusions was reviewed for a 24-months period and included all children who received continuous intravenous nurse-controlled morphine infusions and patient-controlled analgesia; a population undergoing acute and elective surgical procedures, as well as medical and oncological treatments. The relationship between age and infusion rate was investigated using nonlinear mixed effects models. Results: There were 886 children whose data were acceptable for review. Morphine dose increased with age from 9.97 (CV 28%) mu g center dot kg-1 per h in neonates. The Hill equation with an exponential of 1.5 best described these changes. Morphine rate reached 90% of its mean final rate of 22.

More specifically, we examined the potential interaction of COMT

More specifically, we examined the potential interaction of COMT genotype and PTSD diagnosis on fear-potentiated startle during fear conditioning and extinction and COMT DNA methylation levels (as determined using genomic DNA isolated from whole blood). Participants were recruited from medical and gynecological Fer-1 mouse clinics of an urban hospital in Atlanta, GA, USA. We found that individuals with the Met/Met genotype demonstrated higher fear-potentiated startle to the CS-(safety signal) and during extinction of the CS+ (danger signal) compared to Val/Met and Val/Val genotypes. The PTSD+ Met/Met genotype group had the greatest

impairment in fear inhibition to the CS- (p = 0.006), compared to Val carriers. In addition, the Met/Met genotype was associated with DNA methylation at four CpG sites, two of which were associated with impaired fear inhibition to the safety signal. These results suggest that multiple differential mechanisms for regulating COMT function – at the level of protein structure via the Val158 Met genotype and at the level of gene regulation via differential methylation – are associated with impaired fear inhibition in PTSD.”
“Reversed-phase preparative HPLC analyses of the methanol extract of the aerial parts of Stachys lavandulifolia

afforded a new phenylethanoid glycoside, 4,3`,4`-trimethoxy-lavandulifolioside A, named lavandulifolioside B, together with three other known phenylethanoid

glycosides, lavandulifolioside selleck A, verbascoside and leucosceptoside A, and an iridoid glycoside 5-O-beta-allopyranosyloxy-aucubin PCI-34051 (5-O-beta-allopyranosyl-monomelittoside). While the structures of the known compounds, except the iridoid glycoside, were established by direct comparison of their spectroscopic data with respective literature data, lavandulifolioside B and 5-O-beta-allopyranosyloxy-aucubin were identified comprehensively by extensive 1D and 2D NMR analyses. The distribution of the isolated compounds within the genus Stachys has been discussed.”
“Background: The role of the clinical nurse/midwife specialist and advanced nurse/midwife practitioner is complex not least because of the diversity in how the roles are operationalised across health settings and within multidisciplinary teams.

This aim of this paper is to use The SCAPE Study: Specialist Clinical and Advanced Practitioner Evaluation in Ireland to illustrate how case study was used to strengthen a Sequential Explanatory Design.

Methods: In Phase 1, clinicians identified indicators of specialist and advanced practice which were then used to guide the instrumental case study design which formed the second phase of the larger study. Phase 2 used matched case studies to evaluate the effectiveness of specialist and advanced practitioners on clinical outcomes for service users.

White men had significantly higher SAT than did African American

White men had significantly higher SAT than did African American men, but after adjustment for covariates, their SAT was lower than that of African American men.

Conclusions: Abdominal visceral adiposity is significantly greater in white men and women. After adjustment

for covariates, white men and women had significantly lower SAT than did African American men and women. The results of this study highlight the heterogeneity of human body fat distribution across racial groups. This trial was Buparlisib registered at as NCT00959270. Am J Clin Nutr 2010; 91: 7-15.”
“Bacillus anthracis generates virulence factors such as lethal and edema toxins, capsule, and hemolytic proteins under conditions of reduced oxygenation. Here, we report on the acute cytotoxicity of culture supernatants (Sups) of six nonencapsulated B. anthracis strains grown till the stationary phase under static microaerobic conditions. Human small airway epithelial, umbilical Stem Cell Compound Library vein endothelial, Caco-2, and Hep-G2 cells

were found to be susceptible. Sups displayed a reduction of pH to 5.3-5.5, indicating the onset of acid anaerobic fermentation; however, low pH itself was not a major factor of toxicity. The pore-forming hemolysin, anthrolysin O (ALO), contributed to the toxicity in a concentration-dependent manner. Its effect was found to be synergistic with a metabolic product of B. anthracis, succinic acid. Cells exposed to Sups demonstrated cytoplasmic membrane blebbing, increased permeability, loss of ATP, mitochondrial membrane potential collapse, and arrest of cell respiration. The toxicity was reduced by inhibition of ALO by cholesterol, decomposition of reactive oxygen species, and inhibition of mitochondrial succinate dehydrogenase. Cell death appears to be caused by an acute primary membrane permeabilization by ALO, followed by a burst of reactive radicals from the mitochondria fuelled by the succinate, which is generated

by bacteria in the hypoxic environment. This mechanism of metabolic toxicity is relevant to the late-stage conditions of hypoxia and acidosis found in anthrax patients and might operate at anatomical locations of the host deprived from oxygen supply.”
“Using In2O3 as a host matrix, extensive calculations based on density functional click here theory have been carried out to understand the electronic and magnetic properties of native defects, alkali and alkaline-earth metal substitutions as disputed in recent theoretical and experimental studies. Our calculations show that the magnetism in undoped In2O3 is originated from In vacancies (V-In) instead of O vacancies. The ferromagnetic (FM) coupling between the moments introduced by V-In is found strong enough to achieve room temperature ferromagnetism. Moreover, FM coupling is also strongly favored in alkali metal doping cases with negative formation energy.

Repeated exposure resulted in a greater increase of inhibitory ef

Repeated exposure resulted in a greater increase of inhibitory effects than that observed with a single exposure, and these effects were identified in the NC/Nga learn more AD model.

Conclusions: Although more remains to be clarified, these results may support the clinical application of LED for immune regulation. (C) 2011 Japanese Society for Investigative Dermatology. Published by Elsevier Ireland Ltd. All rights reserved.”
“A chronology of dental development in Pan troglodytes is arguably the best available model with which

to compare and contrast reconstructed dental chronologies of the earliest fossil hominins. Establishing a time scale for growth is a requirement for being able to make further comparative observations about timing and rate during both dento-skeletal growth and brain growth. The absolute timing of anterior tooth crown and root formation appears not to reflect the period selleck of somatic growth. In contrast, the molar dentition best reflects changes to the total growth period. Earlier initiation of molar mineralization, shorter crown formation times, less root length formed at gingival emergence into functional occlusion are cumulatively

expressed as earlier ages at molar eruption. Things that are similar in modern humans and Pan, such as the total length of time taken to form individual teeth, raise expectations that these would also have been the same in fossil hominins. The best evidence there is from the youngest fossil hominin specimens suggests a close resemblance to the model for Pan but also hints EPZ5676 Epigenetics inhibitor that Gorilla may be a better developmental model for some. A mosaic of great ape-like features currently best describes the timing of early hominin dental development.”
“Study Design. The mechanisms of apoptosis behind the formation of tissue reactions at the surface of the dorsal root ganglion (DRG) exposed to the nucleus pulposus were studied with special reference to the role of interleukin-6 (IL-6), using electron microscopy and immunohistochemistry in rats.

Objective. To study the role of IL-6 on the DRG.

Summary of Background Data. It has been reported that nucleus pulposus

cells are capable to produce proinflammatory cytokines, including tumor necrosis factor-alpha (TNF-alpha) and IL-6. Recently, it was observed that local application of nucleus pulposus induced a characteristic tissue reaction at the surface of the DRG. This change was due to apoptosis of DRG neurons. However, the role of IL-6 is not known regarding the apoptosis of the DRG neurons.

Methods. Recombinant IL-6 was applied between the L4 DRG and the dura to mimic a disc herniation of the L4-L5 disc in rats. The L4 DRGs were resected 24 hours after surgery. The sections were processed for immunohistochemistry using antisera to TNF-alpha. Furthermore, the sections of the specimens were observed using light and electron microscopy to confirm the induced apoptosis of the DRG neurons.

As part of a multisite study into HIV-associated neurocognitive d

As part of a multisite study into HIV-associated neurocognitive disorders (HAND), the authors captured FHD with a free-response, self-report question, and assessed NP performance with a comprehensive battery of tests. The authors examined HIV+ persons with (N=190) and without (N=916) self-reported FHD. Despite the fact that the FHD group had factors typically associated with better NP performance (e.g., higher CD4 counts and estimated verbal IQ), persons with FHD had significantly worse NP ability than those without FHD as measured by a Global Deficit

Score. Thus, TH-302 datasheet FHD appears to be a risk factor for HAND; the mechanism(s) underlying how FHD contributes to NP impairment among HIV+ persons warrants study. (The Journal of Neuropsychiatry and Clinical Neurosciences 2011; 23:316-323)”
“Objectives: To define acute optic neuritis following infection with chikungunya virus (CHIKV) and to determine the efficacy of treatment with corticosteroids of acute optic neuritis.

Methods: This was an observational study involving 10 patients, who were confirmed cases of infection with CHIKV with acute optic neuritis in one or both eyes. A complete ophthalmic examination was performed in all cases. All 10 patients were treated with intravenous methylprednisolone for 3 days, followed by oral

prednisolone for 2 weeks, thereafter reducing the dose of prednisolone over 1 month.

Results: Stem Cell Compound Library high throughput Of the 10 patients in the study, seven were male and three female. Seven patients had unilateral optic neuritis and three patients had bilateral optic neuritis. Initial visual acuity in the affected eyes ranged from perception of light to visual acuity of 6/6. After treatment, nine out of 10 patients improved to visual acuity of 6/12 or better. Color vision became normal in eight patients in our study. After treatment, a relative afferent pupillary defect persisted in four patients and six patients had normal pupils. A statistically significant improvement in vision was found after treatment (p <= 0.001). Visual field (HFA

FF 120) examination showed various types of defect. Visual fields returned to normal in four patients, while the remaining six patients see more had persistent diffuse visual field defects.

Conclusions: CHIKV infection may cause acute-onset of visual loss due to acute optic neuritis. Prompt recovery of vision may follow steroid therapy. Physicians should be aware of the possibility of acute optic neuritis following CHIKV infection so that a preventable cause of vision loss can be treated effectively. (C) 2010 International Society for Infectious Diseases. Published by Elsevier Ltd. All rights reserved.”
“Reactive oxygen species (ROS) are produced during seed desiccation, germination, and ageing, leading to cellular damage and seed deterioration and, therefore, decreased seed longevity. The effects of simultaneous overexpression of two antioxidant enzymes on seed longevity and seed germination under stressful conditions were investigated.

In 2002, Sanofi-aventis had started a development programme for a

In 2002, Sanofi-aventis had started a development programme for a fixed-dose combination of artesunate and amodiaquine, to replace its co-blister combination. DNDi and sanofi-aventis joined forces in 2004, with the Vorinostat objective of developing within the shortest possible time frame a non-patented, affordable and easy to use fixed-dose combination of artesunate and amodiaquine adapted to the needs of patients, in particular, those of children. The partners developed Coarsucam (R)/Artesunate Amodiaquine Winthrop (R) (“”ASAQ Winthrop”") which was prequalified by the WHO in 2008. Additional partnerships have since been established by DNDi

and sanofi-aventis to ensure: 1) the adoption of this new medicine by malaria-endemic countries, 2) its appropriate usage through a broad range of information tools, and 3) the monitoring of its safety and efficacy Bcl 2 inhibitor in the field through an innovative Risk Management Plan.

Discussion and evaluation: The

partnership between DNDi and sanofi-aventis has enabled the development and pre-qualification of ASAQ Winthrop in a short timeframe. As a result of the multiple collaborations established by the two partners, as of late 2010, ASAQ Winthrop was registered in 30 sub-Saharan African countries and in India, with over 80 million treatments distributed in 21 countries. To date, 10 clinical studies, involving 3432 patients with ASAQ Winthrop were completed to document efficacy and safety issues identified in the Risk Management Plan.

Conclusions: The speed at which ASAQ Winthrop was adopted in Vactosertib inhibitor the field shows that this drug fits the needs of patients and health authorities. It also demonstrates the power of

partnerships that combine different sets of strengths and skills, and that evolve to include additional actors to meet new global health challenges for poverty-related diseases.”
“Brain-lung-thyroid disease is a rare familial disorder caused by mutations in thyroid transcription factor 1, a gene that regulates neuronal migration. We report the clinical features of ten patients from a single family with a novel gene mutation, including observations regarding treatment. Neurologic features of the kindred included developmental delay, learning difficulties, psychosis, chorea, and dystonia. Three patients had a history of seizure, which has not been previously reported in genetically confirmed cases. Low-dose dopamine-receptor blocking drugs were poorly tolerated in 2 patients who received this therapy, levodopa improved chorea in 3 of 4 children, and diazepam was markedly effective in a single adult patient. Chorea related to brain-lung-thyroid disease appears to respond paradoxically to antidopaminergic drugs.

Therefore, this review is oriented to summarize the main pieces o

Therefore, this review is oriented to summarize the main pieces of evidence regarding eCS coming from the anuran amphibian Rana esculenta, with particular interest to the morphofunctional relationship between eCS and gonadotropin releasing hormone (GnRH). Furthermore, a novel role for endovanilloids in the regulation of a testicular GnRH system will be also discussed.”
“Currently, radical cystectomy associated with pelvic lymph node dissection is the gold standard surgical treatment for muscle invasive bladder cancer. However, although there is consensus

on the need for pelvic lymph node dissection, controversies still exist regarding its extent and exact role. Evidence from the literature is based on retrospective data from high volume, often multicentre studies. Different series report very different templates of lymphadenectomy, thereby complicating data analysis.

Furthermore, morbidity LY2090314 datasheet related to lymphadenectomy does not seem to be influenced by the extent of the procedure. The role of the pathologist and the modality of node retrieval have a pivotal role in the quality of node assessment. Different prognostic factors regarding node status (number of nodes retrieved, lymphovascular invasion, lymph node density, extracapsular extension, gross node involvement, and extent of primary bladder tumour related to positive nodes) have been introduced and analysed, although the impact on staging and survival are still under investigation. The correct use and assessment of these prognostic factors should help to provide an accurate staging in order to identify those patients

who need adjuvant therapy. MK 2206 Future studies should, therefore, be prospective and include all information achievable from a lymphadenectomy. HKI-272 in vivo (C) 2009 Elsevier Ltd. All rights reserved.”
“Er3+: Ag-antimony glass nanocomposites are synthesized in a new reducing glass (dielectric) matrix K2O-B2O3-Sb2O3 by a single-step melt-quench technique involving selective thermochemical reduction. The UV-vis-near-infrared absorption spectra show typical surface plasmon resonance (SPR) band of Ag-0 nanoparticles (NPs) in addition to the distinctive absorption peaks of Er3+ ion. X-ray diffraction and selected area electron diffraction results indicate formation of Ag-0 NPs along the (200) plane direction. The transmission electron microscopic image reveals the formation of spherical, fractal, and rod-shaped Ag-0 NPs having maximum size similar to 31 nm. The rod-shaped Ag-0 NPs have aspect ratio similar to 2.4. The field emission scanning electron microscopic image shows development of three dimensional cornlike microstructures. Photoluminescent upconversion under excitation at 798 nm exhibit two prominent emission bands of Er3+ ions centered at 536 (green) and 645 (red) nm due to S-4(3/2) -> I-4(15/2) and F-4(9/2) -> I-4(15/2) transitions, respectively.

The presence of oocysts was determined by light microscopy after

The presence of oocysts was determined by light microscopy after 7 days, and the presence

of sporozoite by ELISA after 14 days. Mosquito species and molecular forms were identified by PCR.

Results: The oocyst rate was significantly higher in the molecular S form (79.07%) than in the M form (57.81%, Fisher’s exact test p < 0.001) and in Anopheles arabiensis (55.38%, Fisher’s exact test vs. S group p < 0.001). Mean +/- s.e. m. number of oocyst was greater in the An. gambiae S form (1.72 +/- 0.26) than in the An. gambiae M form (0.64 +/- 0.04, p < 0.0001) and in the An. arabiensis group (0.58 +/- 0.04, vs. S group, p < 0.0001). Sporozoite rate was also higher in the molecular

form S (83.52%) than in form M (50.98%, Fisher’s exact test p < 0.001) and Anopheles arabiensis Selleckchem Cyclopamine 50.85%, Fisher’s exact test vs. S group p < 0.001).

Conclusion: Infected in the same experimental conditions, the molecular form S of An. gambiae is PFTα ic50 more susceptible to infection by P. falciparum than the molecular form M of An. gambiae and An. arabiensis.”
“Neural mechanisms underlying the onset and maintenance of epileptic seizures involve alterations in inhibitory and/or excitatory neurotransmitter pathways. Thus, the prospecting of novel molecules from natural products that target both inhibition and excitation systems has deserved interest in the rational design of new anticonvulsants. We isolated the alkaloids (+)-erythravine and ( +)-11-alpha-hydroxyerythravine from the flowers of Erythrina

mulungu and evaluated the action of these compounds against chemically induced seizures in rats. Our results showed that the administration of different doses of (+)-erythravine inhibited seizures evoked by bicuculline, pentylenetetrazole, and kainic acid at maximum of Z-IETD-FMK Apoptosis inhibitor 80, 100, and 100%, respectively, whereas different doses of (+)-11-alpha-hydroxy-erythravine inhibited seizures at a maximum of 100% when induced by bicuculline, NMDA, and kainic acid, and, to a lesser extent, PTZ (60%). The analysis of mean latency to seizure onset of nonprotected animals, for specific doses of alkaloids, showed that (+)-erythravine increased latencies to seizures induced by bicuculline. Although (+)-erythravine exhibited very weak anticonvulsant action against seizures induced by NMDA, this alkaloid increased the latency in this assay. The increase in latency to onset of seizures promoted by (+)-11-alpha-hydroxy-erythravine reached a maximum of threefold in the bicuculline test. All animals were protected against death when treated with different doses of (+)-11-alpha-hydroxy-erythravine in the tests using the four chemical convulsants. Identical results were obtained when using (+)-erythravine in the tests of bicuculline, NMDA, and VIZ, and, to a lesser extent, kainic acid.

Conclusions: Our

Conclusions: Our ACY-738 cost data provide compelling evidence for the genetic alteration and loss of expression of DEAR1 in breast cancer, for the functional role of DEAR1 in the dominant regulation of acinar morphogenesis in 3D culture, and for the potential utility of an immunohistochemical assay for DEAR1 expression as an independent prognostic marker for stratification of early-onset disease.”
“2,2-Bis[4-(2-hydroxy-3-methacryloxypropoxy)phenyl]propane (Bis-GMA), one of the most important light-curable dimethacrylate resins, is widely used as dental restorative material. However, one problem of Bis-GMA is the high water

sorption due to the hydrophilic hydroxyl (OH) group, resulting in a short life in actual application. In this study, to overcome the drawback stated above, novel organicinorganic dimethacrylate monomer containing polyhedral oligomeric silsesquioxanes (POSS), Bis-GMA-graft-POSS, is synthesized via the nucleophilic addition reaction of isocyanate functionalized POSS (IPOSS) and pendent hydroxyl group of Bis-GMA. Then the as-synthesized Bis-GMA-graft-POSS, of which hydroxyl group was substituted by hydrophobic POSS, is see more also introduced into the Bis-GMA/TEGDMA matrix to prepare a series of methacrylate-based hybrids for dental materials

under visible light with camphorquinone and ethyl-4N,N-dimethy-laminobenzoae (EDMAB) as initiator and coinitiator, respectively. Compared to Bis-GMA/TEGDMA composites, water sorption of modified composites can be significantly reduced with the addition BV-6 in vivo of Bis-GMA-graft-POSS.

Moreover, the Bis-GMA/TEGDMA/POSS hybrids show hydrophobic surfaces, leading to much higher water contact angles than that of Bis-GMA/TEGDMA composites. The morphology of hybrids containing POSS was furthermore studied by X-ray diffraction (XRD) analysis and X-ray photoelectron spectroscopy (XPS). The results show that POSS disperses in the matrix in noncrystalline form and tend to migrate to the surface of the modified composites that lead to the lower water sorption and higher water contact angles. These results are very useful for design of novel methacrylate monomers and clinical application. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci, 2012″
“The elastic properties of paramagnetic face-centered-cubic (fcc) Fe(1-x)M(x) (M = Al, Si, V, Cr, Mn, Co, Ni, and Rh; 0 <= x <= 0.1) random alloys are investigated using the exact muffin-tin orbitals density functional method in combination with the coherent-potential approximation. We find that the theoretical lattice parameter of fcc Fe is strongly enlarged by Al, V, and Rh and slightly reduced by Si, Cr, and Co, while it remains nearly constant with Mn and Ni.