5 h (range 13-165) in the supplemented and 61.5 h (range 21-166) in the control group (P= 0.596). Median daily frequency of defecation until diarrhea stopped

was 5.0 in the supplemented vs. 5.5 in the control group (P= 0.795). Conclusions This probiotic selleck inhibitor food supplement tested did not reduce the duration of acute infectious diarrhea as compared to oral rehydration and zinc.”
“Autophagy is a catabolic process that has been implicated both as a tumor suppressor and in tumor progression. Here, we investigate this dichotomy in cancer biology by studying the influence of altered autophagy in Drosophila models of tissue overgrowth. We find that the impact of altered autophagy depends on both genotype and cell type. As previously observed in mammals, decreased autophagy suppresses Ras-induced eye epithelial overgrowth. In contrast, autophagy restricts epithelial

overgrowth in a Notch-dependent eye model. Even though decreased autophagy did not influence Hippo pathway-triggered overgrowth, activation of autophagy strongly suppresses this eye epithelial overgrowth. Surprisingly, activation of autophagy enhanced Hippo pathway-driven overgrowth in glia cells. These results indicate that autophagy has different influences on tissue growth in distinct contexts, and highlight the importance of understanding the influence of autophagy on growth to augment a rationale therapeutic strategy.”
“A novel series of 2-substituted aminomethyl-9-alkyl-1,2,3,4-tetrahydrocarbazole-1-ones 5a-q https://www.selleckchem.com/btk.html was synthesized selleck via aminomethylation of 9-alkyl-1,2,3,4-tetrahydrocarbazole-1-ones 4a-e with hydrochlorides of the respective amines 6a-m. The structures of these newly synthesized compounds were characterized by (1)H-NMR, MS, and elemental analysis. All the compounds were tested for their cytotoxic activity in vitro against four human tumor cell lines including human non-small lung cancer cells (A549), human gastric adenocarcinoma (SGC), human colon cancer cell (HCT116), human myeoloid leukemia cells (K562), and

one multi-drug resistant subline (KB-VCR). Most compounds showed moderate to potent cytotoxic activity against the tested cell lines. Preliminary mechanism research indicated that the most promising compound, 2-diethylaminomethyl-9-methyl-1, 2,3,4-tetrahydrocarbazole-1-one 5c, exhibited a potential inhibitory effect against microtubule.”
“The purpose of this study was to assess F-18-FDG uptake in children with a newly diagnosed diffuse intrinsic brain stem glioma (BSG) and to investigate associations with progression-free survival (PFS), overall survival (OS), and MRI indices. Methods: Two Pediatric Brain Tumor Consortium (PBTC) therapeutic trials in children with newly diagnosed BSG were designed to test radiation therapy combined with molecularly targeted agents (PBTC-007: phase I/II study of gefitinib; PBTC-014: phase I/II study of tipifarnib). Baseline brain F-18-FDG PET scans were obtained in 40 children in these trials.

Salicylic acid biosynthesis was additionally distinctively activated in R plants upon infection. Comparing

the expression of genes of the urea and phenylpropanoid pathways in S, R and Solanum habrochaites, the resistance genitor wild species tomato, indicated a time-shift in the expression patterns, before and following infection, which on one hand reflected the genetic similarity between these plants, and on the other hand demonstrated that the resistant phenotype is intermediate between that of S and S. habrochaites.”
“Myelodysplastic syndromes (MDS) are a group of common bone marrow disorders characterized by ineffective hematopoiesis, peripheral cytopenias, AZD2014 cell line and a substantial risk of progression to acute myeloid leukemia (AML). For many years, the main treatment option for MDS was best supportive care which alleviates symptoms, but has no effect on the natural selleck screening library course of the disease. Recently, demethylating agents have become available as a promising new treatment for patients with MDS. In two randomized clinical trials, the demethylating agent azacitidine has demonstrated

a reduced risk of transformation to AML, improvement of peripheral blood values, an improved quality of life, and a definite survival advantage compared to conventional care regimens for patients with International Prognostic Scoring System score of intermediate-2 or high-risk MDS. This review aims to provide practical recommendations for the use of azacitidine and the management of its side effects in patients with MDS, assuring safe administration and best efficacy

of treatment.”
“Persistence of bovine Staphylococcus aureus mastitis may he associated with the small colony variant (SCV) form that is adapted to intracellular life and Evofosfamide mw resists elimination by the immune system. This study evaluated antibody-mediated (AMIR) and cell-mediated immune responses (CMIR) to two bovine SCV forms and their parent strains isolated from cows with mastitis. Four groups of healthy cows, five cows/treatment group, were challenged by the intramammary route with naturally occurring bovine SCV Heba3231, its parent strain 3231, a hemB mutant displaying the SCV phenotype or its parent strain, Newbould 305. Blood and milk samples were collected at clay 0 before challenge and at days 1, 14, 21 and 36 post-challenge to determine antigen-specific immunoglobulin (Ig) IgG(1) and IgG(2) antibody responses as indicators of type 2 and type 1 responses, respectively. At clay 24 post-challenge cows in each group were inoculated with the UV-killed homologous strain intradermally in the neck to induce delayed-type hypersensitivity (DTH) as an indicator of CMIR. The SCV Heba3231 and 3231 strains induced significant IgG(1) and IgG(2) antibody responses in sera and in sera and milk whey, respectively.

The CD spectra indicated that there are certain detectable conformational changes in the DNA double helix when the complex was added. The CV method showed that both anodic and cathodic peak potentials of Tb3+-DFX complex showed negative shifts on the addition of the ctDNA. Further, competitive methylene blue binding studies with fluorescence spectroscopy

have shown that the complex can bind to ctDNA through nonintercalative mode. The experimental results suggest that Tb3+-DFX complex binds to DNA via groove binding and/or electrostatic binding mode. (C) 2013 Elsevier B.V. All rights reserved.”
“Actin exists as a dynamic equilibrium of monomers and polymers within the nucleus of living cells. It is utilized by the cell for many aspects of gene regulation, including mRNA processing, chromatin remodelling, and global RG-7388 gene expression. Polymeric actin is now specifically linked to transcription by RNA polymerase I, II, and III. An active

process, requiring both actin polymers and myosin, appears to drive RNA polymerase I transcription, and is also implicated in long-range chromatin movement. This type of mechanism brings activated genes from separate chromosomal territories together, and then participates in their compartmentalization near nuclear speckles. Nuclear speckle formation requires polymeric actin, and factors promoting polymerization, such as profilin and PIP2, are concentrated there. A review of the literature shows that a functional population of G-actin cycles between the cytoplasm Fedratinib molecular weight and the nucleoplasm. Its nuclear concentration is dependent oil the cytoplasmic G-actin pool, as well as on the activity of import and export mechanisms and the availability of interactions FK228 that sequester it within the nucleus. The N-WASP-Arp2/3 actin polymer-nucleating mechanism functions in the nucleus, and its mediators,

including NCK, PIP2, and Rac1, call be found in the nucleoplasm, where they likely influence the kinetics of polymer formation. The actin polymer species produced are tightly regulated, and may take on conformations not easily recognized by phalloidin. Many of the factors that cleave F-actin in the cytoplasm are present at high levels in the nucleoplasm, and are also likely to affect actin dynamics there. The absolute and relative G-actin content in the nucleoplasm and the cytoplasm of a cell contains information about the homeostatic state of that cell, We propose that the cycling of G-actin between the nucleus and cytoplasm represents a signal transduction mechanism that call function through both extremes of global cellular G-actin content. MAL signalling within the serum response factor pathway, when G-actin levels are low, represents a well-studied example of actin functioning in signal transduction.

SFPQ interacts with two FGFR I fusion partners, ZNF 198 and CPSF6, that are functionally related to the recurrent PDGFR alpha partner FIP1L1. Our findings thus identify a group of proteins that are important selleck compound library for pre-mRNA processing as fusion partners for tyrosine kinases in hematological malignancies. (C) 2008 Wiley-Liss, Inc.”
“We aimed to characterize the primary abnormalities associated with fat accumulation and vulnerability to hepatocellular injury of obesity-related fatty liver. We performed

functional analyses and comparative transcriptomics of isolated primary hepatocytes from livers of obese insulin-resistant Zucker rats (comprising mild to severe hepatic steatosis) and age-matched lean littermates, searching for novel genes linked to chronic hepatic steatosis. Of the tested genome, 1.6% was identified as steatosis linked. Overexpressed genes were mainly dedicated to primary metabolism (100%), signaling, and defense/acute phase (similar to 70%); detoxification, steroid, and sulfur metabolism (similar to 65%) SC79 mw as well as cell growth/proliferation and protein synthesis/transformation (similar to 70%) genes were downregulated. The overexpression of key genes involved in de

novo lipogenesis, fatty acid and glycerolipid import and synthesis, as well as acetyl-CoA and cofactor provision was paralleled by enhanced hepatic lipogenesis and production of large triacylglycerol-rich VLDL. Greatest changes in gene expression were seen in those encoding the lipogenic malic enzyme (up to 7-fold increased) and cell-to-cell interacting cadherin 17 (up to 8-fold decreased). Among validated genes, fatty acid synthase, stearoyl-CoA desaturase 1, fatty acid translocase/Cd36, malic enzyme, cholesterol-7 alpha hydroxylase, cadherin 17, and peroxisome proliferator-activated receptor alpha significantly correlated with severity Selleckchem R406 of hepatic steatosis. In conclusion, dysregulated expression of metabolic and survival genes accompany hepatic steatosis in obese insulin-resistant rats and may render steatotic hepatocytes more vulnerable to cell injury in progressive nonalcoholic fatty liver disease.-Buque,

X., M. J. Martinez, A. Cano, M. E. Miquilena-Colina, C. Garcia-Monzon, P. Aspichueta, and B. Ochoa. A subset of dysregulated metabolic and survival genes is associated with severity of hepatic steatosis in obese Zucker rats. J. Lipid Res. 2010. 51: 500-513.”
“Mn2+-assisted catalysis by B. stearothermophilus TrpRS parallels that in polymerases and reduces specificity in amino acid activation. As predicted by nonequilibrium molecular dynamics simulations, multivariant thermodynamic cycles with [ATP]dependent Michaelis-Menten kinetics and Mn2+ for Mg2+ substitution demonstrate energetic coupling of ATP affinities to the metal; to lysines K111 and K192, which interact via the PPi leaving group; and to K195, which couples differently to the metal via the a-phosphate.

“
“Approaches for the capillary gas chromatographic (GC) based analysis of intact plant stanyl esters in enriched foods were developed. Reference compounds were synthesized by enzyme-catalyzed transesterifications. Their identities were confirmed

by means of mass spectrometry. Using a medium polar trifluoropropylmethyl polysiloxane stationary phase, long-chain plant stanyl esters could be separated according to their stanol moieties and their fatty acid chains. Thermal degradation during GC analysis was compensated by determining response factors; calibrations were performed for ten individual plant stanyl esters. For the analysis of low-fat products (skimmed milk drinking yogurts), the GC separation was combined with a “fast extraction” under acidic conditions. For fat-based foods (margarines), online coupled LC-GC offered an elegant AG-014699 supplier and efficient way to avoid time-consuming

sample preparation steps. The robust and rapid methods allow conclusions on both, the stanol profiles and the fatty acid moieties, and thus provide a basis for the authentication of this type of functional food ingredients.”
“Background&Aim: There is a paucity of data reflecting the symptomatic responses to dietary gluten (SRDG) in patients with Coeliac Disease (CD). We aimed to determine the type, timing and severity of SRDG with reference to a range of disease-related factors.\n\nMethods: Postal survey of 224 biopsy-proven patients including gluten-free diet (GFD) adherence, symptom checklist, ROME II criteria and The Hospital Anxiety&Depression selleck products Scale. Case-note review was also conducted.\n\nResults: 26% of respondents were male. Full GFD adherence: n=159 (70%). Irritable bowel syndrome (IBS): n=50 (22%). Anxiety: n=30 (13%); Depression: n=33 (14%); Anxiety & Depression: n=72 (32%). Pruritus, fatigue and bloating were a more common SRDG in the partial/none GFD adherent group (p=ns). Co-existing IBS was associated with a greater prevalence of nausea and fatigue in response to gluten (p=<0.05). Fully GFD

BI 6727 concentration adherent patients are more likely to have SRDG <1hr than partial/none adherent (OR 4.8; p=0.004), as are a third of patients with co-existing IBS (OR 1.5; p=0.027) and those patients at risk of both anxiety and depression (OR 1.9; p=0.04). Inadvertent exposure to dietary gluten in the fully GFD adherent group is more likely to result in a severe SRDG in comparison to symptoms arising prior to consistent GFD adherence (OR 2.3; p=0.01). IBS sufferers are also more likely to rate their SRDG as severe in nature (OR 1.4; p=0.038).\n\nConclusion: Patients with consistent GFD adherence experience a SRDG faster and more severe in comparison to prior gluten exposure possibly demonstrating an adept immunological response.

\n\nResults Affected family members showed marked clinical diversity, ranging from asymptomatic individuals to those with syncope, heart failure, and premature sudden death. The disease locus for this family was mapped to chromosome

1q42.2-q43, near the marker D1S2850 (logarithm of odds ratio = 2.82, theta = 0). A missense mutation, Ala119Thr, in the alpha-actinin-2 (ACTN2) gene was PP2 clinical trial identified that segregated with disease in the family. An additional 297 HCM probands were screened for mutations in the ACTN2 gene using high-resolution melt analysis. Three causative ACTN2 mutations, Thr495Met, Glu583Ala, and Glu628Gly, were identified in an additional 4 families (total 1.7%) with HCM.\n\nConclusions This is the first genome-wide linkage

learn more analysis that shows mutations in ACTN2 cause HCM. Mutations in genes encoding Z-disk proteins account for a small but significant proportion of genotyped HCM families. (J Am Coll Cardiol 2010;55:1127-35) (C) 2010 by the American College of Cardiology Foundation”
“Total mercury (THg) and methylmercury (MeHg) concentrations in four size fractions of plankton from three sampling stations in the Hg-contaminated and eutrophic Baihua Reservoir, Guizhou, China, were investigated for biomagnification and trophic transfer of Hg at different sites with various proximity to the major point sources of nutrients and metals. Total Hg concentrations in plankton of the various size fractions varied from

49 to 5,504 ng g(-1) and MeHg concentrations ranged from 3 to 101 ng g(-1). The percentage of Hg as MeHg varied from 0.16 to 70%. Total Hg and MeHg concentrations in plankton samples differed Adavosertib mouse among the three sampling stations with different proximities from the major point sources. The plankton from the site closest to the dam contained the highest concentrations of MeHg. The successive increase of the ratios of MeHg to Hg from seston to macroplankton at all sites indicated that biomagnification is occurring along the plankton food web. However, biomagnification factors (BMF) for MeHg were low (1.5-2.0) between trophic levels. Concentrations of THg in seston decreased with an increase of chlorophyll concentrations, suggesting a significant dilution effect by the algae bloom for Hg. Eutrophication dilution may be a reason for lower MeHg accumulation by the four size classes of plankton in this Hg-contaminated reservoir. Environ. Toxicol. Chem. 2011;30:2739-2747. (C) 2011 SETAC”
“Computational studies indicate that some benzophenone-capped cyclophanes should have carbonyl groups pointed directly at their basal benzene rings as a result of conformational restraints imposed by bulky groups in the linking arms of the molecules. Cyclophane 4 was prepared, and its X-ray structure shows it to be the first in-ketocyclophane.”
“Introduction.

\n\nResults\n\nBetween 1995 and 2006, 346 BI-6727 patients were diagnosed with MCC.

Of these, 213 underwent resection of the primary lesion and evaluation of the draining lymph node basin. Fifty-four patients (25%) had tumors <= 1.0 cm in diameter. Average tumor diameter was 0.7 cm, and 63% were located on the head or neck. Only two patients (4%) with tumors <= 1.0 cm had regional lymph node metastasis, compared with 51 (24%) of 213 patients with tumors more than 1.0 cm (P < .0001). Both patients had clinically evident nodal disease at presentation and underwent CLND. Both have remained recurrence-free for 40 months. Thirteen (25%) of 51 patients with nodal metastasis and tumors more than 1 cm had occult nodal metastasis.\n\nConclusion\n\nIn this

series, patients with MCC <= 1.0 cm were unlikely to have regional lymph node metastasis, suggesting that regional nodal evaluation may reasonably be avoided in these patients. However, these data support SLNB for MCC more than 1 cm in diameter.”
“Ultrasound-mediated destruction of microbubbles has been proposed as an innovative non-invasive drug delivery system for cancer therapy. We developed a specific drug delivery system for squamous cell carcinoma that uses sonoporation with the anti-epidermal growth factor receptor (EGFR) antibody. Administration of a low dose of bleomycin (BLM) by sonoporation with the anti-EGFR antibody produced a marked growth inhibition of Ca9-22 cells in vitro. In addition, scanning electron microscopic analysis revealed this website apparent surface deformation of Ca9-22 cells treated with sonoporation

in the presence of the antibody. Interestingly, the population of apoptotic cells was remarkably increased when a low dose of BLM was delivered using sonoporation with the Fab fragment of the anti-EGFR antibody. These findings indicate that sonoporation with the Fab fragment makes it possible to administer drugs into cells more efficiently and specifically, suggesting a novel application for chemotherapy and gene therapy treatments for oral squamous check details cell carcinoma.”
“OBJECTIVES The proportion of tuberculosis cases in a population that are clustered (i.e. share identical strains of Mycobacterium tuberculosis) reflects ongoing M. tuberculosis transmission. It varies markedly, but it is unclear how much of this variation reflects measurable differences in study design, setting and the patient population. We aimed to assess the relative impact of these factors and develop a tool to improve interpretation of the proportion clustered from an individual study.\n\nMETHODS We systematically reviewed all population-based TB clustering studies that used IS6110 RFLP as their main DNA fingerprinting technique. Meta-regression was used to see how much of the variation in the proportion clustered between studies could be explained by variables describing study design, setting and population.

These endotamponades differ in physical and chemical properties and their usage is based on certain pathological and surgical considerations. With modern endotamponades the treatment and prognosis for some severe diseases of the posterior segment was improved. Besides these supportive features of new endotamponades, the surgeon has to keep in mind that certain steps, like a complete removal of the vitreous and of any traction, are crucial for the success of an operation and that the most supportive step for the retina is complete endotamponade. This review gives an overview of longlasting endotampoandes

in vitreoretinal surgery and of the indications for their usage. Copyright (C) 2010 S. Karger AG, Basel”
“Cumulative

evidence in rats suggests that the pontine parabrachial nuclei (PBN) are necessary for assigning hedonic value to taste stimuli. In a series of studies, our laboratory has Protein Tyrosine Kinase inhibitor investigated the parabrachial coding of sapid sucrose in normal and obese rats. First, using chronic microdialysis, we demonstrated that sucrose intake increases dopamine release in the nucleus accumbens, an effect that is dependent on oral stimulation and on concentration. The dopamine response was independent of the thalamocortical gustatory system but was blunted substantially by lesions of the PBN. Similar lesions of the PBN but not the thalamic taste relay diminished cFos activation in the nucleus accumbens caused by sucrose ingestion. Recent single-neuron recording studies have demonstrated that processing of sucrose-evoked activity in the Bafilomycin A1 inhibitor PBN is altered Nepicastat inhibitor in Otsuka Long Evans Tokushima Fatty (OLETF) rats, which develop obesity due to chronic overeating and express increased avidity to sweet. Compared with lean controls, taste neurons in OLETF rats had reduced overall sensitivity to sucrose and altered concentration

responses, with decreased responses to lower concentrations and augmented responses to higher concentrations. The decreased sensitivity to sucrose was specific to NaCl-best neurons that also responded to sucrose, but the concentration effects were carried by the sucrose-specific neurons. Collectively, these findings support the hypothesis that the PBN enables taste stimuli to engage the reward system and, in doing so, influences food intake and body weight regulation. Obesity, in turn, may further alter the gustatory code via forebrain connections to the taste relays or hormonal changes consequent to weight gain.”
“Objectives. To assess daily variations in ambulance calls for cardiovascular diseases (CVDs), mental and behavioral disorders, and external causes in Arkhangelsk, Northwest Russia, in 2000-2008.\n\nStudy design. A population-based study.\n\nMethods. Data about all ambulance calls during the years 2000-2008 were obtained from the Arkhangelsk ambulance station.

(C) 2011 Elsevier

B.V. All rights reserved.”
“Three series of new aromatic polyether sulfones bearing phenyl, p-tolyl or carboxyl side groups, respectively, and polar pyridine main chain groups were developed. Most of the polymeric materials presented high molecular weights and excellent solubility in common organic solvents. More importantly, they formed stable, self-standing membranes that were thoroughly characterized in respect to their thermal, mechanical and oxidative stability, their phosphoric acid doping ability and ionic conductivity. Particularly, the copolymers bearing side p-tolyl or carboxyl groups fulfill all necessary requirements for application as proton electrolyte membranes in high temperature

fuel cells, which are glass transition temperatures higher than 220 degrees C, thermal stability this website up to 400 degrees C, oxidative LY2606368 cost stability, high doping levels (DLs) and proton conductivities of about 0.02 S/cm. Initial single fuel cell results at high temperatures, 160 degrees C or 180 degrees C, using a copolymer bearing p-tolyl side groups with a relatively low DLs around 200 wt % and dry H-2/Air feed gases, revealed efficient power generation with a current density of 0.5 A/cm(2) at 500 mV. (C) 2011 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 49: 4325-4334, 2011″
“Background: NPAS2 is a circadian transcription factor responsive to a wide range of intra- Selleck Gilteritinib and extracellular stimuli. Results: Deficiency of ROR caused a damped transcriptional oscillation of Npas2 and functional depletion of an RORE resulted in a complete loss of the oscillation. Conclusion: Nuclear receptors elicit cell-autonomous circadian transcription

of Npas2. Significance: Synchronous transcriptional oscillation of Npas2 with Bmal1 provides the foundation for efficient circadian input and robust oscillation. NPAS2 (MOP4) is a heme-containing sensor transcription factor responsive to a wide range of intra- and extracellular stimuli, which also functions as a circadian transcription factor. This molecule forms a heterodimer with another circadian transcription factor, BMAL1, and activates transcription via E-box elements, indicating that circadian phase synchronization between NPAS2 and BMAL1 expression is important for the efficient transcriptional activation of target genes. However, details of the mechanism of cell-autonomous circadian transcription of Npas2 remain unclear. Here, we show that one of the ROREs (retinoid-related orphan receptor response elements) in the upstream region of the transcription start site is essential for circadian transcription of the Npas2 gene.

LV global deformation parameters were measured with speckle tracking echocardiography. Insulin resistance was assessed using 1 h oral glucose tolerance testing. Results: High salt diet led to cardiac hypertrophy and HF, characterized by increased wall thicknesses

and LV volumes as well as reduced deformation parameters. In addition, high salt diet was associated with the development of insulin resistance. Exercise SB525334 datasheet training improved cardiac function, reduced the extent of interstitial fibrosis and reduced insulin levels 60 min post-glucose administration. Conclusions: Even if not fully reversed, exercise training in HF animals improved cardiac function and insulin resistance. Adjusted modalities of exercise training might offer new insights not only as a preventive strategy, but also as a treatment for HF patients. (C) 2015 Elsevier Ireland Ltd. All rights reserved.”
“More than 100 HPV types have been described, 13 of which are classified as high-risk due to their association with the development of cervical cancer. The intratype genomic diversity of HPV-16 and -18 has been studied extensively, while little data have been generated for other less common high-risk types. The present study explores the nucleotide variability and phylogeny of the high-risk HPV-31, -33, -35, -52, and -58, in samples from

Central Brazil. For this purpose, the LCR and the E6 and L1 genes were sequenced. Several variants of 17DMAG supplier these HPV types were detected,

some of which have been detected https://www.selleckchem.com/products/lcl161.html in other parts of the world. Furthermore, new variants of all types examined were characterized in a total of 13 new variants, Based on the E6 and L1 sequences, variants were described comprising conservative and non-conservative amino acid changes. For phylogenetic tree construction, samples characterized in this study were compared to others described and submitted to GenBank previously. The phylogenetic analysis of HPV-31, -33, -35, and -58 isolates did not reveal ethnic or geographical clustering as observed previously for HPV-16 and -18. HPV-35 analysis showed a dichotomic branching characteristic of viral subtypes. Interestingly, four clusters relative to the analysis of HPV-52 isolates were identified, two of which could be classified as Asian and European branches. The genomic characterization of HPV variants is crucial for understanding the intrinsic geographical relatedness and biological differences of these viruses and contributes further to studies on their infectivity and pathogenicity. J. Med. Virol. 81:685-692, 2009. (C) 2009 Wiley-Liss, Inc.”
“Herpes simplex virus type 1(HSV-1) glycoproteins H and L (gH and gL) are required for virus-induced membrane fusion. Expression of gH at the virion or infected cell surface is mediated by the chaperone-like activity of gL. We have previously shown that a region between amino acids 155 and 161 is critical for gL chaperone-like activity.