A 15 second relaxation period separated each repeat, and a minimu

A 15 second relaxation period separated each repeat, and a minimum 30 seconds separated the different stretches. For those stretches that stretched a single limb, the this website right limb was stretched first,

and all four stretches were completed before starting on the left limb. In each instance, the experimenters pushed or pulled the specified body part until they received verbal acknowledgment that the stretch was felt by the participant. The experimenters then maintained constant pressure on the participant’s body part for 30 seconds. At the end of the stretch, the body part was returned to a neutral position for 15 seconds. The control condition involved mock stretches, during which the same positions were adopted as in the experimental condition, but no tension was applied to the musculature. The stretches included (in the order they were applied): seated knee flexor; seated knee flexor-hip adductor; seated shoulder lateral flexor; SRT1720 cell line supine hip flexor-knee extensor; seated hip external rotator and hip extensor; shoulder extensor, adductor and retractor; supine knee flexor and plantar flexor; prone hip flexor; seated shoulder flexor and depressor; and seated shoulder flexor and elbow extensor. A description covering how each

of these stretches was performed is presented in Box 1. Twenty minutes after the initiation of either the stretching or mock stretching, the regimen was interrupted for a blood glucose measure. After this, the participants continued the treatment regimen, but only up

to 40 minutes at which point the treatments were ended. Stretch Description Seated knee flexor (bilateral) Each person sat on the floor with the legs extended and arms above the head. From this position, each person lowered their head toward the knees, while the experimenter pushed down on their back. Seated knee flexor – hip adductor (bilateral) The participants sat on the floor in the lotus position. From this position, each person lowered their head toward to the floor, while the experimenter pushed down on their back. Seated shoulder lateral flexor (bilateral) The person sat in a chair with fingers interlocked and placed behind the head. Keeping the arms in this position, Astemizole the experimenter stood behind the person and pulled the elbows back toward the body’s midline. Supine hip flexor-knee extensor (unilateral) The participants lay on their backs with their leg hanging over the edge of the table with the knee flexed at approximately 90°. The hip was then hyperextended by the experimenter pushing down on the thigh. Seated hip external rotators, extensors (unilateral) Each person sat on the floor with one leg extended. The opposite leg was flexed at the knee, and the foot placed flat against the extended leg’s inner thigh. The person then lowered their head toward the extended knee, while the experimenter pushed down on their back.

Acknowledgements: ISPO Australia,

staff and administrator

Acknowledgements: ISPO Australia,

staff and administrators at the Department of Physiotherapy, Royal Perth Hospital. Correspondence: Caroline Roffman, Faculty of Health Sciences, Curtin University, School of Physiotherapy & Exercise Science Curtin University of Technology, Perth, Australia. Email: [email protected]
“Technology is progressing at an unprecedented rate. Driven by a healthy consumer appetite for all things digital, technology is becoming smaller, more mobile, more powerful, and is increasingly being equipped with sensors such as accelerometers and gyroscopes, cameras, high quality microphones, and amazingly vivid displays. Among the most popular of these technologies are smartphones and video game consoles. Parks Associates (2010) have estimated Alectinib purchase that, in 2014, smartphone users will have topped 1 billion worldwide. Sensor-based gaming consoles are also becoming more popular with 76 million Wii devices and over 600 million games Selleckchem AZD0530 sold to date (Nintendo

2010). With their exceptional processing power, versatility, and features, these devices are starting to be used for medical applications. Some of the most popular applications on the Apple iTunes store include AirStrip, which allows remote critical care and cardiology monitoring, and ResolutionMD, a medical image visualiser for the iPhone. The growing number of medical applications available raises important questions: does a smartphone running a medical application, or a Wii game used for rehabilitation purposes qualify as a medical device and, if so, does such a device require regulatory approval as would any conventional medical device? These questions become more complicated when an application not specifically Mephenoxalone designed as a medical application is used for therapeutic purposes. For example, the TiltMeter application for the iPhone presents as an ideal and extremely cost-effective inclinometer for a practising physiotherapist. However, if this application is used for diagnostic purposes, should its use be regulated as would a standard

medical inclinometer? These questions may have significant implications for physiotherapy researchers and clinicians for developing, using, or even recommending applications and technologies for clients. In Australia, the Therapeutic Goods Administration (TGA) is the regulatory body that assesses and monitors medicines and medical devices in the commercial market to ensure that they are safe, effective, and of a high quality (TGA 2010). All therapeutic goods must be entered on the Australian Register of Therapeutic Goods (ARTG) before they can be supplied in Australia. The TGA states that a medical device is any instrument, appliance, material, apparatus, article, or even an accessory to these items that is used on a human, has a therapeutic benefit, or is used to measure or monitor functions of the body.

Demographic data, medical history of chronic

conditions,

Demographic data, medical history of chronic

conditions, date of vaccination and type of vaccine were collected using a structured questionnaire. For the assessment of influenza vaccine effectiveness, children were defined as vaccinated if they had received at least one dose more than 14 days before symptom onset. An influenza-confirmatory laboratory test was carried out in all children. The virus was detected through nasopharyngeal sample collection; stable viral transport medium was added to swabs. Specimens were collected and analysed by using a real-time reverse transcriptase-polymerase chain reaction (RT-PCR). In six centres the tests were analysed in internal laboratories, whereas MLN8237 the others sent the specimens to certified external laboratories. The first phase of the study was performed

in the 2011–2012 influenza season and was used as a pilot study to refine the 2012–2013 investigation. In order to concentrate enrolment and laboratory tests in the epidemic period the coordinator centre gave the start-up on the basis of data on influenza epidemics in Italy provided from the National surveillance of ILI incidence [9]. The inclusion of children took place between 1 February and 31 March 2012 BKM120 manufacturer (for the 2011–2012 season), and between 14 January and 15 March 2013 (for the 2012–2013 season). The inclusion periods were the same for all centres. Data were analysed according to a test-negative case-control study design: all children with a positive confirmatory laboratory test (to one of the viruses contained in the seasonal vaccine) were included as cases, whereas controls were children with a negative test. For effectiveness evaluation, odds of influenza vaccination were compared in cases and controls. The following paediatric hospitals and departments of were participating: Giannina Gaslini Paediatric Hospital (Genova); Regina Margherita Paediatric Hospital (Torino); Department of Paediatrics, University of Padova; Paediatric Department, Treviso Hospital (Treviso); Anna Meyer Children’s University Hospital (Firenze); Department of Paediatrics,

University of Perugia; Pharmacology and Paediatrics and Developmental Neuroscience, Università Cattolica S. Cuore (Roma); Bambino Gesù Paediatric Hospital (Roma); Santobono-Pausilipon Paediatric Hospital-Virologic Unit Cotugno (Napoli); Giovanni Di Cristina Paediatric Hospital (Palermo); University Hospital of Messina. A common study protocol was approved by the Ethics Committee of each clinical centre. The study was coordinated by the National Centre of Epidemiology of the National Institute of Health in Rome. Data were analysed with SPSS (v. 21.0). T-test was used to compare means, Wilcoxon–Mann–Whitney non-parametric test was used to compare medians and Chi-square test was used to compare percentages. Adjusted odds ratios (ORs) and 95% confidence intervals (CI) were estimated through a logistic regression model.

As such, there is profound scientific rationale to pursue the dev

As such, there is profound scientific rationale to pursue the development of female-controlled preventive strategies, principally involving the cervico-vaginal region, the predominant mucosal viral portal of entry in heterosexual transmission. To be fully effective, such a vaccine should NVP-BKM120 molecular weight provide sterilising immunity in the vaginal mucosal environment

by inducing sustained robust protective immune effector function against diverse viral isolates. How to achieve sustained immune effector function, particularly humoral immune effector function by way of neutralising antibody or rapid effective recall of immunological memory at mucosal surfaces is the subject of intense investigation. In addition, from a formulation/drug delivery perspective to ensure

equity of access, particularly in the context of sub-Saharan Africa, such a vaccine should preferentially be inexpensive, safe, thermo-stable PR-171 chemical structure not requiring cold-chain storage and would facilitate female-controlled administration. It is thought that the envelope spike is the only HIV-1 target available for neutralising antibodies [4]. As a result much emphasis has been placed on viral surface envelope glycoproteins as HIV-1 vaccine candidates. The efficacy of protein pharmaceuticals as vaccines depends Thalidomide upon maintaining storage stability as well as intended antigenicity following administration. Vaginally administered solubilised protein antigens are subject to leakage at the administration site, rapid enzymatic degradation, the influences of the menstrual cycle and inadequate exposure to the mucosal associated

lymphoid tissue. There are a limited number of reports of vaginal immunization in women [5], [6], [7], [8], [9], [10] and [11] and, with the exception of three studies [5], [6] and [7] they have employed a known potent mucosal immunogen-cholera toxin subunit B that does not require the use of an adjuvant. We previously reported on the design and development of well-tolerated mucoadhesive, syringeable, rheologically structured semi-solid vehicles (RSVs) for site-retentive vaginal administration of an HIV-1 vaccine candidate – a recombinant clade-C gp140 envelope protein (CN54gp140), in the rabbit model [12] and [13]. While the RSVs were a viable delivery modality for vaginal immunization as determined by the elicitation of vaccine-specific serum immunoglobulin (Ig) G, and vaccine-specific IgG and IgA in genital tract secretions, the vaccine was not stable within the aqueous-based preserved RSV formulations. The antigenicity of CN54gp140 altered over the course of prolonged storage and this was more pronounced the higher the storage temperature.

The hind legs were shaved prior to the insertion of a 4-electrode

The hind legs were shaved prior to the insertion of a 4-electrode array with a centered injection needle. Fifty μl of the vaccine solution were injected intramuscularly followed by an

electric pulse in each hind leg, resulting in a total vaccine volume of 100 μl. The animals were vaccinated twice in a 3-week interval. Cellular immune responses were monitored 2 weeks after the second vaccination by intracellular cytokine staining of isolated splenocytes. Blood samples were collected on days 20 and 34 and analyzed for HA-specific antibodies. Splenocytes were collected 2 weeks after the second vaccination. After red blood cell lysis, 1 × 106 cells were plated in 96-well round-bottom plates (Nunc) for each staining. Samples were stimulated for 6 h with the immunodominant peptides in the presence of 2 μM Monensin (to inhibit cytokine secretion) in RPMI 1640 supplemented with 10% FCS, 2 mM buy I-BET151 l-Glutamine, 10 mM HEPES, 50 μM β-Mercaptoethanol and 1% antibiotic/antimycotic (all Gibco, Karlsruhe, Germany). CD4 cells were restimulated by the HA peptide (SFERFEIFPKE, 5 μg/ml) in combination with αCD28 antibodies (1 μg/ml) and controls were incubated in the learn more presence of αCD28 without peptide. CD8 T-cells were restimulated in the presence of the peptide (IYSTVASSL, 5 μg/ml) or medium alone. After stimulation, surface

staining was carried out with αCD8-PerCP or αCD4-PerCP (BD Bioscience, Heidelberg, Germany). Cells were fixed in 2% paraformaldehyde, followed by permeabilisation with 0.5% Saponin in PBS/BSA/azide buffer. Cytokines were detected with αTNF-α-PE, αIFN-γ-PE and αIL-2-AlexaFluor647 (BD Bioscience, Heidelberg, Germany). Samples were analyzed on a FACSCalibur® (BD Bioscience, Heidelberg, Germany). 293 T-cells in a 75 cm2 tissue culture Terminal deoxynucleotidyl transferase flask were transfected using PEI (Polyethyleneimine), as described elsewhere [18]. 20 μg of pV-HAco and 4 μg of DSred were mixed with PEI (1 μg/μg DNA) in 1 ml serum-free DMEM medium (Gibco, Karlsruhe, Germany),

incubated for 10 min at room temperature and then added to the cells in 10% FCS-containing DMEM medium. After 3 days, cells were scraped from the flask and resuspended in medium to obtain a single-cell solution. Cells were then plated in a 96-well round-bottom plate (Nunc, Wiesbaden, Germany) at a density of 2 × 105/well, washed once with 200 μl PBS/BSA/azide buffer and incubated with sera from the vaccinated animals for 30 min at 4  C. The sera were pre-diluted 1:20 in PBS/BSA/azide buffer and heat-inactivated for 10 min at 56 °C, before adding (100 μl) to the cells. After incubation, the cells were washed twice with PBS/BSA/azide buffer and bound HA-specific antibodies were detected using a FITC-labelled anti-mouse IgG antibody (1–300 dilution; BD Bioscience, Heidelberg, Germany). Samples were incubated for a further 30 min at 4 °C, then washed twice and analyzed on a FACSCalibur® (BD Bioscience).

Renal uptake and retention of radiopharmaceuticals are dependent

Renal uptake and retention of radiopharmaceuticals are dependent not only on the characteristics of the targeting molecule, but also on the

type of radionuclide and chelating agent check details used. We observed that the renal uptake levels of 111In-DOTA-RAFT-c(-RGDfK-)4 and 64Cu-cyclam-RAFT-c(-RGDfK-)4 were substantially different, with biodistributions at 24 h after injection of ∼40%ID/g and ∼10%ID/g, respectively [6] and [19]. Therefore, in this study, we determined the effect of GF on the renal uptake and retention of 64Cu-cyclam-RAFT-c(-RGDfK-)4 in normal and tumor-bearing mice. In comparison with the published work on the 111In-labeled analog, the present study particularly evaluated (1) the dose–effect relationship

of GF, (2) the combined effect of GF and Lys, (3) the spatiotemporal changes in renal radioactivity caused by GF in the presence or absence of Lys (GF ± Lys), and (4) the influence PI3K Inhibitor Library of GF ± Lys on the metabolism of 64Cu-cyclam-RAFT-c(-RGDfK-)4. Another novelty is that the present study explored the mechanisms underlying the action of GF and Lys using the noninvasive and quantitative PET imaging technology. Cyclam-RAFT-c(-RGDfK-)4 (MW 4119.6) was synthesized as reported previously [5], and radiolabeled with 64Cu in accordance with our previous report [6] with minor modifications. In brief, 0.08 mM cyclam-RAFT-c(-RGDfK-)4 in dimethyl sulfoxide and 1.48 MBq/μL 64CuCl2 in ammonium citrate buffer (100 mM, pH 5.5) were mixed in a ratio of 1:1 (v/v) and incubated at 37 °C for 1 h. The radiolabeling efficiency, as determined by reversed phase (RP) high-performance

liquid chromatography, was >98%, and the specific radioactivity was ∼18.5 MBq/nmol. Gelofusine (Braun Medical, Oss, Netherlands), MycoClean Mycoplasma Removal Kit kindly provided by Dr. Lucie Sancey (University of Lyon 1, France), consists of a 40 g/L solution of succinylated gelatin for intravenous infusion, and was diluted in normal saline (NS) for use in the present study. l-Lysine (Sigma–Aldrich, Buchs, Switzerland) was dissolved in NS and added to the injectate prior to administration. Human glioblastoma U87MG cells naturally expressing αVβ3 were cultured as previously described [6]. Animal procedures were approved by Institutional Animal Care and Use Committee of the National Institute of Radiological Sciences (NIRS; Chiba, Japan). Normal or tumor-bearing mice (female BALB/cAJcl-nu/nu; CLEA Japan, Inc., Tokyo, Japan) at 7–8 weeks of age were examined. The tumors, 7–10 mm in diameter, were developed by subcutaneous (s.c.) injection of 1 × 107 cells into the left shoulder region of the mice. Mice were injected via tail vein (i.v.) with 0.74 MBq 64Cu-cyclam-RAFT-c(-RGDfK-)4 with or without co-injection of GF, Lys, or both (GF + Lys). The biodistribution study consists of the following 3 sequential experiments.

Five (5) Beagle dogs and twelve (12) cynomolgus monkeys were used

Five (5) Beagle dogs and twelve (12) cynomolgus monkeys were used to generate representative data with the model, and their response to the positive control drug (PTZ) (see the Experimental methods section). At onset of treatment, Beagle dogs were 10 months old and cynomolgus monkeys were 2 years old. Prophylactic antibiotics (Baytril, Bayer Health Care, Toronto, ON, Canada; 0.1 mL/kg, 50 mg/mL; Penicillin G procaine, Vetoquinol, Lavaltrie, QC, Canada; 0.4 mL, 300 000 IU/mL) were administered by intramuscular (IM) injection prior to surgery and daily for at least two days. Preemptive analgesia was attained via a transdermal Fentanyl patch

(Sandoz, QC, Canada; 12.5 μg/h) over three days. An antibiotic, Cefazolin (Novopharm, Markham, ON, Canada; 0.4 mL/kg, 80 mg/mL) was applied to the skull surgical site. A local anesthetic (Bupivacaine, selleck chemical Hospira, Montreal, QC, Canada, 0.25%, 0.5 mL; or Lidocaine, Vetoquinol, Lavaltrie, QC, Canada; 20 mg/mL, 0.5 mL) was injected (0.1–0.2 mL) in 6–10 subcutaneous (SC) sites distributed over the skull surgical site to ensure a multimodal analgesia. Animals were placed on a heating pad and inhaled a mixture of oxygen (O2) and isoflurane (AErrane, Baxter Corporation, Mississauga, ON, Canada). Respiratory rate was maintained between 8 and 20 breaths/min with an inspiratory airway pressure between 18 and 25 cm Small molecule library H2O using a mechanical ventilator (Hallowell

EMC, Pittsfield, MA, USA). Heart rate, pulse oximetry (SpO2) and body temperature were monitored continuously during anesthesia. A longitudinal incision

was performed lateral but close to the linea alba, and the internal abdominal oblique muscle was separated from the aponeurosis of the transversus abdominis. The telemetry transmitter was placed between the internal abdominal oblique muscle and the aponeurosis of the transversus abdominis muscle. The rectus abdominis was sutured with a simple continuous suture and EEG electrodes were tunneled subcutaneously to a small skin incision in the neck. Electroencephalographic leads (TL11M2-D70-EEE, Data Science International, ADP ribosylation factor St.-Paul, MN, USA) were secured on to the skull bones to monitor three standard bipolar derivations (C3-O1, C4-O2 and Cz-Oz) using the 10–20 electrode system. A linear groove was done in the cranial cortical bone to secure the electrodes with surgical glue (Vetbond, 3M, St-Paul, MN, USA) and acrylic. Electromyographic (EMG) recording was obtained using electrodes sutured to longitudinal muscles in the neck area and recorded continuously with the telemetry transmitter. A period of three weeks was allowed between surgery and the start of experimental procedures. An additional ten (10) cynomolgus monkeys (3.5–6 years old), maintained under the same environmental conditions as described above, were surgically prepared with the same telemetry transmitters (TL11M2-D70-EEE, Data Science International, St.

All subjects who agreed to follow up beyond one year of age and w

All subjects who agreed to follow up beyond one year of age and who complied with the study protocol were included in the supplementary analyses, regardless of event(s) in the first year of life. Vaccine efficacy against a particular event was calculated using the formula VE = (1 − relative

risk) × 100, where relative risk = cumulative incidence of the event in the vaccinated group/cumulative incidence of the event Proteases inhibitor in the placebo group. Ninety-five percent confidence intervals for vaccine efficacy were derived from the exact confidence interval for the Poisson rate ratio for each analysis [17]. A p-value was also calculated using a two-sided Fisher’s exact test. The incidence rate in a group was computed as the number of infants reporting at least one event (the first event only was included) divided by the total follow-up time for each parameter or subgroup with corresponding 95% confidence Selleck Epacadostat intervals [18]. The number of events prevented (per 100 infants per year) was obtained as 100 times the difference in incidence rate between the group that received placebo and the group that received RIX4414. The associated confidence interval was derived using the method conceptualized by Zou and Donner [19]. The study was undertaken according to Good Clinical Practice (GCP)

guidelines. Informed consent was obtained from the subject’s parent/guardian prior to any study procedure being undertaken. In case of illiteracy of the parent/guardian, consent was undertaken with the assistance of an impartial witness. The study protocol was approved by the Malawi National Health Sciences Research Committee, the Liverpool School of Tropical Medicine Research Ethics Committee, and the ethics committee of the World Health Organisation. A total of 1773 infants were enrolled in Malawi. Of these, 1513 and 1194 infants were included in the ATP efficacy cohorts for the first and second years of follow-up, respectively (Fig. 1). Demographic details were similar for vaccine and placebo groups [14]. The mean age (SD) at final visit was 19 months (4.78) for the RIX4414 group and 18.9 Adenosine months (5.03) for the placebo group. The mean duration of follow-up

was 0.6 years for the first follow-up period, 0.78 years for the second follow-up period and 1.25 years for the entire follow-up period. The incidence of severe rotavirus gastroenteritis was higher in the placebo group during the first year of follow-up (7.9%, 95% CI 5.6–10.6) than in the second year of follow-up (4.5%, 2.6–7.1) (Table 1). Fewer episodes of severe rotavirus gastroenteritis occurred in the pooled RIX4144 group compared with the placebo group for the first, second, and entire follow-up periods (VE 49.4% [19.2–68.3], 17.6% [−59.2 to 56.0] and 38.1% [9.8–57.3], respectively), although the differences were not statistically significant for the second follow-up period. For two years of follow-up, rotavirus vaccination prevented 6.

In presence of Ca (II)

In presence of Ca (II) Panobinostat in vivo ion the percentage of protein binding of drug increased (42–46) % at lower concentration range and (82–91) % at higher concentration zone. In brief, Ca2+ caused an increase in protein binding of Amlodipine besylate leading to the formation of stable 1:1 Amlodipine besylate–Ca 2+ complex. This means that the increase in percentage of protein binding may be due to capture of binding sites in the protein by Ca2+ or Amlodipine besylate

& Amlodipine besylate–Ca2+ complex. Thus possibility of adverse effect of Amlodipine besylate may become prominent in presence of Ca or similar drugs in the body system. The subsequent non-linear shape of the Scatchard plots (Fig. 14 and Fig. 15) describes both high and low affinity binding sites of the drug on protein molecules. There were at least two classes (Class 1 and Class II) of binding sites in BSA for Amlodipine besylate and its (1:1) complex with Ca (II) ion (Table 2). We saw that in class I binding sites, the value of affinity constant for Amlodipine besylate alone 1.02 was lower than its 1:1 complexes with Ca (II) ion 1.04 (Table 2), that is, the presence of Ca 2+ with Amlodipine besylate at physiological temperature and pH conditions, cause an increase in values of affinity constant. In class-I, the number of binding

site decrease in presence of Ca (II) ion 2.08 than that of alone Amlodipine besylate i.e. 8.03. Since it is almost exclusively limited to albumin and the number of available binding sites is limited, the binding properties of drugs depend on Selleck 17-AAG plasma albumin concentration. So, due to increase in affinity of the Amlodipine besylate to plasma

protein in class I binding site in presence of Ca (II) ion, the volume of distribution (Vd) as well as bioavailability of the drug (Amlodipine besylate) may decrease.17 and 18 So the proposed drug–metal interactions could interfere substantially with the intestinal absorption see more of Amlodipine besylate owing to the lower solubility of the chelates in intestinal tract.19 So concomitant administration of Amlodipine besylate with food products containing Calcium, nutritional supplements and multivitamins containing Ca (II) ion could impair the clinical efficacy of the drug and reduce its bioavailability. More detailed research may reveal the mechanism of increase binding of drug to the protein in presence of calcium. All authors have none to declare. “
“In nineties solid lipid nanoparticles followed by nanostructured lipid formulations were introduced as an alternative to the conventional colloidal systems like emulsions, liposomes and microparticulate dispersions.1 The important merits of nanostructured lipid based systems includes its biocompatibility, its suitability for drug targeting, fabricated drug release, easy production process and suitability for the large scale production.2 and 3 However, it has few demerits also like drug loading and drug stability during storage.

However, oseltamivir-resistant

viruses have been associat

However, oseltamivir-resistant

viruses have been associated with antiviral treatment and poor clinical Selleckchem CT99021 outcome [6] and [7]. The exceptional adaptive ability of the virus and the lack of human pre-immunity and of available vaccines underline the necessity of rapid measures to be taken and research on the development on human H7 vaccines is underway [8], [9], [10], [11], [12], [13] and [14]. Here, we assess the efficacy of a single low vaccine dose of influenza A H7 virus-like particles (VLPs) of Avian Influenza A (H7N9) virus origin to protect against a stringent viral challenge in the mouse model. Two-component influenza virus-like particles, containing HAs from the first H7N9 virus isolates (A/Anhui/1/13 or A/Shanghai/1/13, respectively) and the

matrix protein (M1) from A/Udorn/307/1972, this website were produced in the Trichoplusia ni insect cell line High Five (BTI-TN-5B1-4) using the baculovirus expression system. Previous studies conclusively demonstrated the potent immune stimulating properties of live baculovirus in vaccine preparations [15] and [16]. Hence, in order to keep the by-product in the vaccine formulation, we concentrated the VLPs and residual baculovirus from the culture supernatant by one-step sucrose-cushion purification. Mice received one VLP vaccine dose containing different amounts of HA (3 μg, 0.3 μg and 0.03 μg) and 5 weeks later were challenged with a stringent viral dose (100 mLD50) of the A/Shanghai/1/13 H7N9 strain. Pre-challenge serum was evaluated for the breadth of reactivity and hemagglutination inhibition (HI) activity of the elicited humoral response to divergent H7 HAs, as well as representatives of all group 2 HA subtypes. Even the lowest tested vaccine doses conferred full protection against the stringent viral challenge. In addition, a single vaccination with the H7 VLP vaccine induced serum antibodies that

were broadly reactive and HI active against divergent H7 subtyped viruses. We also detected sero-reactivity to heterosubtypic members of the group 2 HAs, such as H15 and H3. Sf9 insect cells (ATCC # CRL-1711) were routinely propagated at 27 °C in TNM-FH medium (Gemini Bio-Products, West Sacramento, CA) supplemented with 0.1% (v/v) Pluronic 68 (Sigma, St. Louis, MO), 10% (v/v) foetal bovine serum (FBS) (Atlanta Biologicals, Norcross, GA) oxyclozanide and Penicillin–Streptomycin antibiotic mixture (Life Technologies, Carlsbad, CA). For baculovirus amplification, the medium was switched to 3% (v/v) FBS. BTI-TN-5B1-4 (High Five – Vienna Institute of Biotechnology subclone) [17] cells were used for expression of VLPs and maintained at 27 °C in custom modified serum-free IPL-41 medium (PAN-Biotech GmbH, Aidenbach, Germany) at 27 °C as described in [18] supplemented with Penicillin–Streptomycin antibiotic mixture. Recombinant influenza viruses were generated by reverse genetics as described before [19], [20] and [21].