The samples of the younger age groups (one to 17 years) were resi

The samples of the younger age groups (one to 17 years) were residual sera from diagnostic laboratories, and samples from the adult population (≥18 years of age) were residuals

of sera obtained from healthy blood donors living all over Israel, screened before the use of the blood donations. Both sources excluded repeat samples from the same individuals as well as sera taken from subjects with confirmed or suspected immunological disorders. Each sample had a unique identifier, plus details of age, sex, religion, place of residence (at the level of town), and the year in which the sample was drawn. Pertussis this website has been reported in Israel since the early 1950s. Practitioners are requested to notify each clinical case to the local public health office which reports on a weekly basis to the Ministry of Health. Case classification does not imply laboratory confirmation. National immunization coverage is calculated each year by the district health offices, and submitted to the Everolimus concentration Ministry of Health. The calculation is based on a representative sample of children born in each health district and registered in the public Family Health Centres. Serum samples were stored at −20 °C until they were tested at the Department of Epidemiology and Preventive Medicine Research Laboratory, Tel Aviv University. IgG antibodies to B. pertussis toxin (PT) were determined by

a commercial enzyme-linked immunosorbent assay (ELISA) (Pertusscan PT-G™, Euro-Diagnostica AB, Sweden) in accordance with the manufacturer’s instructions. This assay was validated within the European Sero-Epidemiology Network 2 (ESEN2) project by testing a panel of 150 human control sera provided by the European Pertussis Reference Laboratory (Department of Hygiene and Microbiology, University of Palermo, Italy) [10]. The panel’s results were calibrated against

those from the Reference Centre at the Health Protection Agency Centre for Infections, London. Linear and quadratic regression was fitted and R2 (multiple correlation coefficient) values were calculated. In the standardization process regression lines were selected and standardization equations obtained [10]. These standardization equations were used others to convert the local quantitative results into standardized reference laboratory unitage (ESEN units). Test results are expressed in “ESEN units” per millilitre. The quantitative titers of anti-PT IgG were classified as high titer samples using a cut-off level of 125 ESEN units/ml (equivalent to 225 local units/ml) indicative of recent or active infection with B. pertussis [9]. The sensitivity of this threshold was estimated at 76% and the positive predictive value (PPV) at 80%, assuming a true prevalence of disease of 10% [9]. A second cut-off of 62.5 ESEN units/ml (equivalent to 134 local units/ml) was employed, suggesting B. pertussis infection in the previous 12 months with high probability [9] and [11].

4 g/L) and pentane-1-sulfonic acid sodium salt (0 4 g/L) adjusted

4 g/L) and pentane-1-sulfonic acid sodium salt (0.4 g/L) adjusted to pH 3.0 with orthophosphoric acid and acetonitrile as mobile phase B. The gradient program T (min) = % B: 0 = 10, 2 = 15, 5 = 17, 7 = 20, 8 = 25, 9 = 30, 13 = 25, 15 = 10, and 18 = 10, with flow rate of 1.2 mL/min was employed. The injection volume was 10 μL while the detector was set at 273 nm. The column temperature was maintained at 35 °C. About 3.4 g of monobasic sodium phosphate dissolved in 800 mL of water, adjusted to pH 3.5 ± 0.05 with dilute

orthophosphoric acid solution was used as buffer. The diluent used was a mixture of buffer, acetonitrile and water in the ratio of 80:15:5 (v/v/v). A stock solution of Metoclopramide Hydrochloride (240 μg/mL) was prepared by dissolving an appropriate amount in the diluent. Standard Regorafenib solution containing 6 μg/mL was prepared from this stock solution. 5 mL of Metoclopramide injection USP solution containing 5000 μg/mL was dissolved in 25 mL of diluent to give a solution containing 1000 μg/mL as sample solution. The study was intended to ensure the separation of Metoclopramide and its degradation impurities. Forced degradation study was performed to evaluate the stability indicating properties Cobimetinib research buy and specificity of the method. Multiple stressed samples were prepared

as indicated below. Solution containing 1 mg/mL of Metoclopramide was treated with 1 N HCl, 1 N NaOH and water respectively. These samples were refluxed at 80 °C for 5 h. After cooling the solutions were neutralized and diluted with diluent. Solution containing 1 mg/mL of Metoclopramide was treated with 6% w/v H2O2 at 40 °C for 6 h was cooled

and diluted with diluent. The drug solution (5 mg/mL) was subjected to heat at 105 °C for 24 h. After cooling 5 mL of the above solution was transferred in a 25 mL volumetric flask, diluted to the volume with diluent. The drug solution (5 mg/mL) was exposed to the UV light in the photolytic chamber PDK4 providing an overall illumination of 1.2 million lux h and ultraviolet energy of 200 W h/square meters for 184 h. 5 mL of the above solution was transferred in 25 mL volumetric flask, diluted to the volume with diluent. Metoclopramide injection USP (5 mg/mL) was subjected to 25 °C/90% RH for 7 days. 5 mL of the above solution was transferred in 25 mL volumetric flask, diluted to the volume with diluent. The development of selective method for determination of Metoclopramide and its related substances is described as an important issue in method development. Metoclopramide and its related substances show different affinities for chromatographic stationary and mobile phases due to differences in their molecular structures. To obtain a good resolution among the impurities and main drug substance different stationary phases were tested considering; a. The feature of stationary phase.

10 DAQ was used for determining the differential measurement (ele

10 DAQ was used for determining the differential measurement (electrical potential) to attain more accurate measurement with less noise. The two electrodes (inputs) dipped in solutions were connected to the DAQ. The specifications were: NI-9234 with 4 channels, 5, 24 bit, SW selectable IEPE and AC/DC, 2 V. The advantage of USB-DAQ device was that it alone can build a low cost system. LabVIEW is called as virtual instruments (VI). It contains a set of tools for acquiring, analyzing, displaying, Buparlisib mouse and sorting data as well as tools that help in trouble shooting. LabVIEW can be used to build an user interface or front panel, with controls and indicators. The LabVIEW supports the data acquisition

of the analog values. In LabVIEW, FFT is a powerful tool for analyzing and measuring signals (from plug-in DAQ). From the time domain signals, the frequency content was measured. The amplitude of the FFT was related to the number of points on the time domain scale. FFT gave a single waveform with average amplitude against GW3965 in vitro frequency. A Data Assistant (block

diagram) was used to display the time-voltage spectrum on the front panel. The signals received from the DAQ were displayed. Further, FFT tool (block diagram) was installed in the program. The package was developed user friendly with save options of the waveforms. The program was validated using the frequency generator (Hewlett Placard, USA). The experimental setup was self-explanatory (Fig. 1).9 The aqueous solution of the taste stimulant was filled into the inner tube B through the side tube, C. When the inner tube was filled, the side tube was sealed off with a stretched rubber membrane. Outer vessel was filled with water. The inner tube was hung into the outer vessel A, in such a way that the levels of the liquids in the inner tube and in the outer

vessel remained the same. The electrodes were immersed one into the inner vessel and the other into the outer vessel. The leads were connected to DAQ and further through USB port to the computer. The rubber seal over the side Levetiracetam tube C was ruptured. The electrical potential differences across the electrodes were recorded with time. The data were obtained in the time domain and frequency domain. In the present work, capillary diameter was 0.103 × 10−3 m and length of the capillary was 7.7 × 10−2 m. An isolated environment was maintained and all electrical fixtures were switched off. The experiment was conducted with AC mode. GraphPad prism was used for evaluating the statistical parameters, regression analysis and graphs. The hydrodynamic oscillations were known as density oscillations. The density of the sour taste stimulant in the capillary was responsible for the initiation of oscillations. Hence, densities of different concentrations of the sour taste stimulants (citric acid, hydrochloric acid, lactic acid, and tartaric acid) were determined, using a specific gravity bottle.

6 and 8 Studies have measured adherence to exercise programs in a

6 and 8 Studies have measured adherence to exercise programs in a range of ways, Galunisertib in vitro which makes comparison between studies difficult. Previous reviews have not systematically documented measurement methods and factors associated with adherence. The aims of this study were to systematically review prospective studies of older people’s adherence to exercise programs, in order to answer the following research questions: 1. In prospective studies focusing on adherence to exercise programs among older people,

how was adherence measured? An electronic search using the strategies outlined in Appendix 1 (see eAddenda) was conducted for five databases: Medical Literature Analysis and Retrieval System Online (MEDLINE), Excerpta Medica Database (EMBASE), Scientific Electronic Library (SciELO), Latin American Literature in Health Sciences (LILACS) and Physiotherapy Evidence Database (PEDro). The inclusion criteria for studies are

presented in Box 1. Eligible studies involved male and/or female participants with a mean age of over 65, were prospective in design and evaluated factors associated with adherence as a primary aim. Studies were excluded in which all participants had specific diseases or the sample did not consist only of older people. Studies published more than 10 years ago were also excluded, because the context was judged to be outdated. Design • Randomised trials Participants • Adults Intervention • Exercise programs Outcome measures • Participant adherence to the exercise program For each included study, descriptive data regarding participants, interventions,

selleck products measures of adherence, rate of adherence and factors associated with adherence were extracted, along with statistics indicating the strength of association. For each included study, two reviewers independently extracted the relevant data. If different data were extracted by the two reviewers, data were rechecked by both reviewers. through If disagreement continued, a third author arbitrated. The characteristics of the studies were summarised with descriptive statistics. The range of approaches for measuring adherence was noted and the number of studies measuring adherence with each approach was tallied. Comparable measures of adherence were summarised as ranges. The factors associated with adherence in each study were tabulated, including the strength of the association. The MEDLINE and EMBASE database searches via Ovid identified 838 articles, of which 17 papers were retrieved in full text. The SciELO search did not identify any studies. The LILACS search identified six studies, but none met the eligibility criteria. The PEDro search identified 13 articles, of which five were eligible. Therefore, a total of nine publications met the inclusion criteria. Reasons for exclusion are presented in Figure 1.

Effective vaccines are also available for the immunoprophylaxis <

Effective vaccines are also available for the immunoprophylaxis Ruxolitinib of Japanese encephalitis, including both inactivated whole virus and live attenuated vaccines. Originally, the substrates for inactivated vaccines were either infected mouse brains or primary hamster kidney cells (China) and vaccine efficacies

of 76–95% were reported [9]. Recently, a new inactivated vaccine was developed by Intercell (IXIARO) that is based on the attenuated SA14-14-2 strain grown in Vero cells [59]. Several studies have demonstrated excellent immunogenicity, tolerability as well as non-inferiority to mouse brain-derived inactivated vaccines and this product is now available on the market in many countries, including the US, Europe, Japan, and Australia [60], [61] and [62]. The attenuated SA-14-14-2 strain was developed in China and is licensed in this country as a live vaccine since 1988 [9]. The field effectiveness is comparable to that of the inactivated vaccines (88–96%) and

more than 300 million doses have been administered since its licensure [9]. A new generation live JE vaccine was developed by Sanofi Pasteur that is based on a chimeric virus containing the prM and E proteins (Fig. 4) of JEV whereas all of the rest is derived from the attenuated YFV 17D strain as a backbone (Chimerivax/IMOJEV) [63]. Clinical studies revealed excellent immunogenicity LY2109761 mouse without safety concerns and the vaccine is now licensed in Australia [64]. TBE can be effectively prevented by highly purified inactivated whole virus vaccines that are produced in Europe and Russia, using primary chicken embryo cells as a substrate [11], [65] and [66]. Their use in endemic regions differs widely, with the highest vaccination coverages reached in Austria (85%) [67] and the Sverdlovsk district of Russia (81%) [68]. The field effectiveness of both the European and Russian vaccine is very high. It reaches 98% [67] and [68] when the proper vaccination schedule is applied and has led to a dramatic decline of disease incidence in the vaccinated population. The dengue serocomplex of

flaviviruses consists of 4 serotypes (Fig. 3), each of which is made up MYO10 of several genotypes [69]. Consistent with substantial differences in the amino acid sequence of their E proteins, the degree of cross-neutralization and cross-protection between members of different serotypes is limited. After human infection with one serotype, heterologous protection lasts only for few months and epidemiological observations indicate that previous infection with one serotype can predispose to the severe forms of dengue (DHS/DSS) upon re-infection by another serotype [70]. Since endemic regions with co-circulating different serotypes have enormously expanded (establishment of hyperendemic areas) also the incidence of DHF/DSS has increased dramatically in the last decades [5] and [71].

However, two major aspects need indispensable optimization, viz

However, two major aspects need indispensable optimization, viz. a suitable renewable biomass/wastewater and ideal microbial consortia that can convert this biomass efficiently to hydrogen gas. It is a natural, though transient, by-product of several microbial driven biochemical reactions, mainly in anaerobic fermentation processes. Dark-fermentation is a ubiquitous phenomenon under anoxic or anaerobic conditions. The oxidation of the substrate by bacteria generates electrons which need to be disposed off in

order to maintain the electrical neutrality under the anaerobic or anoxic conditions other compounds, such as protons, act as the electron acceptor and are reduced to molecular http://www.selleckchem.com/screening/stem-cell-compound-library.html hydrogen.22 and 23 The bacteria which grows at 65–80 °C are called as extreme thermophiles. The G + C content of the P. stutzeri was 53 mol% which was higher than the reports of Isaac KO Cann

24 for the species Thermoanaerobacterium polysaccharolyticum and Thermoanaerobacterium zeae. This strain grew well on starch and sucrose at 70 °C. No hydrogen evolution was observed at pH 4.0–5.0 in both starch and sucrose. The hydrogen production was low at 5.5–6.5 in starch and sucrose. The low or no hydrogen production at low pH could be Venetoclax concentration partially attributing to strong decrease in hydrogenase activity 25 and this enzyme is also highly sensitive to oxygen. 23 The strain preferred high temperature for optimum hydrogen production. The hydrogen production in the medium was pH dependent and occurred within the wide range of pH 6.0–9.0. In dark-fermentation processes, this problem is compounded by the fact that the gas produced is a mixture of primarily

H2 and CO2, but may also contain other gases such as CH4, H2S, or ammonia (NH4). Moreover, the H2 content of the gas mixture Endonuclease may be low (>50%). Maximal H2 production rates were observed during exponential growth phase, which was in the order of 8–12 h, within a total growth cycle of approximately 2 days. 23 Thus no hydrogen evolution was found after 42 h of fermentation. The hydrogen production obtained is however variable and depends greatly on the bacterial consortium and culture medium. 26 Raw materials add to the cost of biohydrogen production processes. The main criteria for the selection of a substrate for H2 production are its availability, cost, carbohydrate content and biodegradability.27 Cost reduction is achieved by either using the low cost substrate or finding a means to effectively utilize the 67–85 % of the unused spent media.28 Commercially produced food products, such as corn and sugar are not economical for H2 production.29 However, solid organic wastes from agricultural crops, industrial processes and domestic waste water represent a valuable resource for the energy production. Starch based wastewater has great potentiality for the H2 production.30 Disposal of these wastes is an economic load on the society.

, 2000, Valabrega et al , 2007 and Sun et al , 2011) Berberine (

, 2000, Valabrega et al., 2007 and Sun et al., 2011). Berberine (BBR), which is a natural alkaloid, was reported to inhibit cell proliferation and induce apoptosis by suppressing HER2 expression and the HER2-mediated PI3K/Akt signaling pathway in HER2-overexpressing breast cancer cells, such as SK-BR-3, BT474, and HER2-overexpressing MCF-7 (MCF-7/HER2) cells ( Kuo et al., 2011). selleck products The extent of the reduction of phospho-HER2/phospho-Akt induced by BBR treatment (25 or 50 μM for 24 or 48 h) was stronger

in SK-BR-3 cells than that in BT474 and MCF-7/HER2 cell lines. Unlike BBR, CHO10 induced a significant decrease in the protein levels of phospho-HER2, phospho-MAPK and phospho-Akt with a smaller amount (10 μM treatment for 16 h) than BBR in SK-BR-3 cells (25 or 50 μM for 24 or 48 h). Luteolin, which is a naturally occurring flavonoid, was reported to effectively inhibit cell proliferation and induce apoptosis in HER2-overexpressing cancer cells, including AU565, MDA-MB-453 and SKOV3.ip1 ( Chiang et al., 2007). Luteolin considerably reduced the level of the HER protein with a 20 or 40 μM treatment for 24 h and preferentially inhibited the proliferation of HER2-overexpressing cancer cells; a 20 μM luteolin treatment blocked >60% of the growth in AU565, MDA-MB-453 and SKOV3.ip1 cells, while it was

much less effective in MCF-7 and HBL-100 cells that expressed basal levels of HER2 under the same conditions. The mechanism

of the Phosphatidylinositol diacylglycerol-lyase luteolin-mediated HER2 down-regulation http://www.selleckchem.com/products/Metformin-hydrochloride(Glucophage).html is different from that of CHO10; luteolin promotes HER2 degradation through dissociating HER2 from Hsp90 without significantly affecting the level of Hsp90. Although the mechanism of HER2 depletion is different from each other, both CHO10 and luteolin are able to inhibit preferentially the proliferation of HER2-overexpressing cancer cells ( Fig. 2A) ( Chiang et al., 2007). The ESX–Sur2 interaction inhibitory activity of CHO10 led to the down-regulation of HER2 and caused apoptosis in a dose- and time-dependent manner, as demonstrated by the increase in sub G1 population (Fig. 2C and D) and cleaved PARP level ( Fig. 2E) without caspase-3 activation (Fig. 3A and B). The mechanism underlying caspase-independent cell death is very complex ( Donovan and Cotter, 2004). PARP can directly induce apoptosis regardless of caspase-3 activation by stimulating the release of apoptosis initiating factor (AIF), which translocates into the nucleus ( Yu et al., 2006). BBR was reported to induce apoptosis by activating the mitochondria/caspase pathway in HER2-overexpressing breast cancer SK-BR-3 cells ( Kuo et al., 2011) and was also reported to lead to colon tumor cell death through PARP activation-dependent AIF activation without stimulating caspase activation. The BBR-induced colon cell death was not affected by co-treatment with a caspase inhibitor ( Wang et al., 2012).

Consequently, there is a continuing need to design and develop a

Consequently, there is a continuing need to design and develop a new generation of broadly protective and safe vaccines, especially for this age category. The anionic adjuvant Endocine™ was developed specifically to formulate intranasal vaccines. Endocine™ is

composed click here of endogenous lipids found ubiquitously in the human body and has been tested successfully in clinical trials with diphtheria, influenza and HIV [19], [20] and [21] (and unpublished data). The results of these trials showed that Endocine™ is safe and tolerable in humans, and in the influenza trial the Endocine™ adjuvanted whole virus vaccine fulfilled the EMA/CHMP HAI criteria for a seasonal influenza vaccine. Moreover, influenza-specific IgA was measured in nasal swabs and it was shown that the Endocine™ adjuvanted vaccine induced a significantly higher fold-increase in nasal IgA compared to the mock vaccine with Endocine™ alone [19]. In line with these observations, no adverse effects of the administration of Endocine™ were noted in pre-clinical toxicology or efficacy studies (unpublished

data). The two components of Endocine™, monoolein (monoglyceride) and oleic acid (fatty acid), are metabolites generated in mammalians when lipids (triglycerides) are mobilized and energy needed. Monoolein is composed of glycerol and oleic acid and is a nontoxic, biodegradable and biocompatible material which is included in the FDA Inactive Ingredients Guide and in nonparenteral

PLX4032 medicines licensed in the United Kingdom [53]. Oleic acid has been described as being the most abundant fatty acid in human adipose tissue and it is abundantly present in mammalian tissues including tissues from rat, chicken, pig and cow [54] and [55]. Both oleic acid and monoolein and are classified as GRAS (generally recognized as safe) by the FDA, US. A study in mice showed that Endocine™ mixed with a commercially available trivalent split influenza vaccine (Vaxigrip) significantly (p < 0.003–0.05) improved the humoral (HI, VN) and 17-DMAG (Alvespimycin) HCl cellular (IFNγ and IL-2 secreting cells) immunity upon nasal administration [21]. Furthermore, intranasal immunization with the Endocine™ formulated vaccine significantly increased the H1N1-specific IgA levels both in serum and nasal washings [21]. In the present study, we have shown that Endocine™ formulated inactivated pH1N1/09 influenza vaccines administered as nasal drops induced a protective systemic immune response in influenza naïve ferrets. Serum HI antibody titers of ≥40 (GMT) were already measured after one immunization, even at the lowest antigen dose of 5 μg HA split antigen. All animals in this study received three nasal immunizations, but optimal serological responses were already measured after two immunizations and the third immunization proved to be redundant for antibody induction.

The first goal of these experiments was to determine if immunizat

The first goal of these experiments was to determine if immunization altered the magnitude or epitope specificity buy INCB28060 of the anti-Msp2 responses as compared to infection; specifically whether immunization as compared to infection shifted the antibody response, in terms of the breadth or magnitude, toward the conserved regions of Msp2. This immunity against conserved region epitopes could prevent immune escape of new variants and result in the clearance observed following challenge of immunized animals but not during natural or experimental infection. The second goal of these experiments was to determine if the breadth or

magnitude of the anti-Msp2 antibody response correlated with control of bacteremia in infected animals or prevention or control of bacteremia in immunized Bortezomib datasheet animals. To address these questions, animals were immunized with purified outer membranes or cross-linked surface proteins from the St. Maries strain of A. marginale, and the resulting specific antibody responses to the hypervariable (HVR) and conserved (CR) regions of Msp2 were mapped and titered. Vaccinees were then challenged with the homologous strain of A. marginale. Importantly, the St. Maries strain, for which the complete genome sequence is available,

was used in these experiments, thus allowing mapping of the Msp2 expressed variants to their original donor pseudogene alleles, analysis of all possible combinations of the HVR, and comprehensive testing of the epitope specificity induced much by immunization versus infection. The immunization and challenge have been previously reported in detail [11]. Briefly, two groups of five calves each were immunized 5 times at 3-week intervals with approximately 35 μg of either A. marginale outer membranes or protein complexes suspended in 1 mg of saponin in a total volume of 1 ml administered subcutaneously. The third group

of five calves was similarly immunized on the same schedule using only adjuvant. Four months after the last immunization, all calves were challenged intravenously with approximately 1 × 104A. marginale (St. Maries strain) in 1 ml Hank’s balanced salt solution. Starting 10 days post-challenge, the packed cell volume and bacteremia, as defined by the percent of infected erythrocytes, were determined daily for all the animals. PCR was used to confirm the lack of infection in the four challenged vaccinees that did not develop microscopically detectable bacteremia based on daily blood smear examination. DNA was isolated from whole blood using a Puregene DNA isolation kit (Qiagen, Valencia CA). Primers that specifically amplify msp5, a single copy gene, were used to detect A. marginale, as previously described in detail [12] and [13]. Amplification was performed in 50 μl volume with 35 cycles of melting at 94 °C for 15 s, annealing at 65 °C for 58 s, and extension for 71 s at 72 °C.

Protein-adjuvant

Protein-adjuvant PLX3397 clinical trial vaccines often elicit relatively Th2 skewed responses with little murine IgG2a/b production [57]. Thus the significant enhancement of IgG2a production we observed with viral vectors here may be of protective value, particularly if it generalizes to other antigens postulated to induce Fc-dependent

responses. Antibody avidity has not been demonstrated to correlate with protection against blood-stage malaria and has in fact been predicted to be unimportant in response to merozoite antigens [48] and [58]. The relationship between avidity and protection in other diseases is complex and variable, but avidity has been observed to be associated with protection against respiratory syncytial virus, HIV-1 and anthrax [59], [60], [61] and [62]. The finding of enhanced avidity with A–M and related regimes compared to protein vaccination therefore merits further study and may be of interest beyond the malaria field. There was strikingly little variation in the rate of decline of total IgG ELISA titer over the prolonged period of follow-up after vaccination.

It would therefore seem that peak ELISA titer is an adequate predictor of antibody concentration at a later time point. The presence of a correlation between splenic ASC counts and ELISA titer at both early and late time points supports this. The reliable priming of antibody responses by adenovirus prior to subsequent boosting by MVA or protein strongly suggests that adenovirus containing regimes reliably generate memory B cell responses. It remains to be see more seen whether the different vaccine modalities investigated here induce memory B cell/antigen-recall responses that vary independently of peak antibody titer/overall regime immunogenicity. It is interesting to note that in our previous studies, the viral vector PfMSP1-based antigen failed to induce detectable antigen-specific CD4+ T cell responses in BALB/c mice, even though viral vectored regimes can induce measurable CD4+ T cell responses

against other antigens [5], [6] and [63]. before This would appear at odds with our finding of a reliably primed and boosted, avid, IgG2a skewed response to A–M-containing regimes: a response which bears the hallmarks of a Th1 response to a ‘T-dependent’ antigen bearing CD4+ T cell epitopes. Quite possibly, such helper T cell responses were simply below the limit of detection of the ICS assay, or these cells secreted cytokines other than IFNγ, TNFα and IL-2. Alternatively, recent evidence shows that, in mice, IFNα- or IFNγ-activated DCs can drive T-independent immunoglobulin class-switching with either a Th1 or Th2 skew, and that T-independent type-2 antigens can induce long-lived cells capable of mounting a secondary recall response [64] and [65]. It is therefore possible that adjuvants (and viral vectors) may be able to influence class-switching in a CD4+ T cell-independent manner.