As mentioned above, HIV-1-patients do show both quantitative and

As mentioned above, HIV-1-patients do show both quantitative and qualitative

variability of the B lymphocytes [13] and [38]. To circumvent this problem we analysed the load in CD19+ B cells. The chronic B-cell activation together with the loss of EBV immunoregulatory control seems to play a major role in the development of EBV-positive NHL in HIV-1 infected patients [39]. Excessive expansion of EBV-infected B-cells together with a risk for chromosome translocations conferring find more a malignant phenotype might explain the increased frequency of B-cell malignancies [8] and [40]. Our results must be considered in view of the well-documented decrease of lymphomas paralleled with the reconstitution of the immune system observed after the implementation of cART. The major conclusion from our results

is the recommendation to combine EBV-load analysis together with a long-term follow up of lymphoma risk in all therapeutic HIV-vaccine trials with or without combination anti-retroviral therapy. This study was supported by the Swedish Medical Research Council, the Swedish Cancer Society, VX-770 mw the Children Cancer Foundation, and the Cornell Foundation. “
“In September 2007, Ann Arbor strain LAIV was approved for use in children 2 through 4 years of age with precautions against use in children <24 months of age and children 24 through 59 months of age with asthma, recurrent wheezing, or altered immunocompetence. Because data from a large randomized study showed an increased risk of medically significant wheezing in LAIV-vaccinated children 6

through 23 months of age and an increased rate of hospitalization in LAIV-vaccinated children 6 through 11 months of age [1], LAIV was not approved for use in children younger than 24 months. MedImmune committed to the US Food and Drug Administration to conduct a 3-year study assessing the frequency of use and safety of Dipeptidyl peptidase LAIV in specific groups of children <5 years of age who are not recommended to receive LAIV. The results from the first 2 study seasons have been reported by Tennis et al. in 2011 [2]. The current report describes the results from the third influenza vaccination season, 2009–2010. Among the 3 monitored seasons, 2009–2010 includes the largest number of children vaccinated with LAIV. This monitoring effort evaluated the rate of LAIV vaccination and frequency of emergency department (ED) visits or hospitalizations within 42 days postvaccination with LAIV compared with that of trivalent inactivated influenza vaccine (TIV) among the nonrecommended pediatric populations. This activity was designed to monitor for previously unidentified safety concerns rather than test specific hypotheses about increased risks of specific conditions. Detailed definitions are provided by Tennis et al. [2].

Both CRP, measured with high-sensitivity nephelometry assay (Roch

Both CRP, measured with high-sensitivity nephelometry assay (Roche Diagnostics, Indianapolis, IN) and ALC (derived from the Ku-0059436 ic50 CBC) were performed commercially (ACM Global Laboratory, Rochester, NY). IP-10 and IL-6 ELISAs are described below. Cellular responses were evaluated 7 days after the second administration of vaccine. Antibody responses were evaluated to determine anti-PA IgG levels in serum samples collected on Day 0, 14, 28, 42, and 70 (this paper) and toxin-neutralizing antibody (TNA) levels [14]. Prior to the first vaccine dose, and 7 days after the second vaccine dose (study day 21), PBMC were isolated from venous blood

samples, and stored in liquid nitrogen vapors at SeraCare Life Sciences (Gaithersburg, MD). For ELISpot controls: stimulants were phytohaemmaglutinin (PHA; mitogen, control for viability, Sigma, St Louis, MO) and CEF I peptide pool (Cellular Technology Ltd; Shaker Heights, OH) representing HLA Class I-restricted peptides from cytomegalovirus, Epstein Bar virus and influenza virus (CEF). Recall antigens were rPA (Emergent BioSolutions, Gaithersburg, MD) or a pool of 10 PA-derived peptides (PAps) (ProImmune, Oxford, UK). Sequences for PAps were selected on the basis of (1) high binding scores calculated by SYFPEITHI [15] and PROPRED

[16] in silico programs, (2) predicted binding by multiple HLA Class II types, (3) low hydrophobicity and (4) absence of selleck screening library cytotoxicity to naïve PBMC. Stimulation by PAp mixture was performed with a final concentration of 10 μg/mL of each peptide. PAp amino acid sequences and restricting ADP ribosylation factor HLA haplotypes are listed in Table 2. PBMC were thawed in serum-free medium, re-suspended to a density of 1–2 × 106 viable cells/mL, rested overnight at 37 °C, 5% CO2, recounted and adjusted to target viable cell densities. For IFN-γ ELISpot, stimulants and antigens (50 μL) were delivered to 96-well plates (SeraCare LifeSciences),

followed by PBMC (50 μL per well, 300,000 cells; or 100,000 cells for PHA wells). Final volume per well was 100 μL. PHA was tested in duplicate wells and all others in triplicate. PBMC from a single-donor (SeraCare Cat. # 1074) which responded to CEF I stimulation with IFN-γ production, were included in every plate to assess experimental variability. After 40–48 h of incubation, IFN-γ spot forming cells (SFC) were enumerated using an ELISpot plate reader (Cellular Technology Ltd.). A specificity rate of 100% and a sensitivity rate of 79% were achieved using SFC counts at cut-off levels of ≥200 for PHA- and ≥15 for CEF I-stimulated cells. Specificity and sensitivity rates were lower if fewer SFC for PHA and CEF I were analyzed. Serum samples obtained at study sites were stored at −70 °C until assayed.

However, only a small group of participants (19%) felt that the s

However, only a small group of participants (19%) felt that the social support they experienced also positively influenced their physical activity level.

Figure 2 shows that there is great variability in physical activity preferences. Approximately one-third of the participants preferred going to a health club or performing a sporting activity, while 25% of the participants preferred lifestyle activities, like walking or gardening. Over 40% preferred a combination of both types of physical activity. Selleck XAV939 Additionally, 40% of the participants preferred being physically active with others, 30% alone, and 30% preferred a combination of both. The participants who preferred sports or the health club tended to also prefer being physically active with others, whereas the participants who preferred lifestyle activities tended to also prefer being physically active alone. Table 2 shows the results of the cluster analysis, which generated two clusters. Although all categories of the interview were entered in the cluster analysis, Table 2 shows only the categories that

were significantly different between the clusters that were formed by the cluster analysis. The clusters could be characterised as one cluster with a high physical BMN 673 activity level and one cluster with a low physical activity level. A high physical activity level was related to being physically active because of enjoyment and high self-efficacy for physical activity. A low physical activity level was related to being sedentary because of poor weather influencing health, financial constraints, health problems, and being ashamed to be physically active. We also investigated if the clusters

differed in lung function, exercise capacity, dyspnoea severity, gender, or age. The cluster with a high physical activity level was characterised by higher lung function and exercise capacity and less severe dyspnoea than the cluster with low physical activity level. Gender and age did not differ significantly between clusters. The identification of personal perspectives about physical activity is important because it increases our knowledge of the facilitators Electron transport chain of and barriers to physical activity in people with COPD. Our results show that the most frequently reported reason to be physically active was health benefits, followed by enjoyment, continuous active lifestyle in the past, and functional reasons. The most frequently reported reason to be sedentary was poor weather, followed by health problems, and lack of intrinsic motivation. Additionally, we could identify several factors that were related to the actual measured physical activity level. A high physical activity level was related to the following two facilitators: enjoyment and self-efficacy for physical activity. A low physical activity level was related to the following four barriers: weather influencing health, financial constraints, health problems, and shame. An identified facilitator of physical activity was enjoyment.

The efficacy of influenza vaccines has traditionally been assesse

The efficacy of influenza vaccines has traditionally been assessed against symptomatic laboratory-confirmed influenza illnesses without specific consideration of disease severity. However, a recently published efficacy study of inactivated influenza vaccine (IIV) versus placebo in children 3–8 years of age evaluated vaccine efficacy as a function of influenza severity [8]. The per-protocol efficacy of IIV was 55% against all laboratory-confirmed

cases of influenza. Efficacy was higher (74%) against moderate/severe cases due to increased efficacy against moderate/severe influenza A disease; efficacy was lower (42%; Dinaciclib ic50 author personal communication) against milder influenza B and influenza A illnesses. Moderate/severe illnesses were those associated with the presence of fever >39 °C, acute otitis media, or lower respiratory tract illness. The efficacy of live attenuated influenza virus (LAIV) in children has been documented in several clinical trials [9], but has not been assessed

with regard to disease severity. The purpose of this study was to evaluate the efficacy of LAIV against moderate/severe and milder laboratory-confirmed influenza in children ≥24 months of age. All randomized clinical trials that evaluated the efficacy of LAIV in children aged 2–17 years were reviewed: two previously published BMS-777607 in vitro prospective, double-blind, randomized clinical trials comparing the efficacy of LAIV versus placebo or IIV in children collected data regarding influenza illness severity [10], [11] and [12].

Study 1 was a two-year placebo-controlled study conducted in the United States in healthy children 15–71 months of age [11] and [12]. 17-DMAG (Alvespimycin) HCl Subjects were randomly assigned in a 2:1 ratio to receive LAIV or placebo. In year 1, subjects received LAIV or placebo as a single dose or 2 doses administered approximately 60 days apart [11]. In year 2, subjects received 1 dose of LAIV or placebo according to the randomization schedule in year 1 [12]. Study 2 was a one-year IIV-controlled study. Healthy children 6–59 months of age in the United States, Europe, and Asia were randomly assigned in a 1:1 ratio to receive either LAIV or IIV [10]. Vaccine-naive children were administered two doses of vaccine within a 42-day period; children who had been vaccinated previously received one dose. LAIV consisted of 106.5–7.5 median tissue culture infectious doses (TCID50) or fluorescent focus units of each of the three influenza strains (A/H1N1, A/H3N2, and B) contained in the vaccine. The IIV-controlled study used IIV manufactured by Aventis Pasteur in the corresponding region; children 6 months to <36 months of age received 0.25 mL per dose (7.5 μg of each hemagglutinin) while children ≥36 months of age received 0.

Emulsification of the antigen with adjuvant was done using a homo

Emulsification of the antigen with adjuvant was done using a homogenizer with a standard emulsification stator/rotor connected to an emulsion screen.

The formalin-inactivated ALV405 antigen was formulated into a monovalent vaccine (ALPHA JECT micro®1 PD, PHARMAQ AS, Norway), or into several polyvalent vaccines where DAPT six components that are heterologous to SAV also were present at a fixed concentration, and where the concentration of ALV405 varied as described below. The six additional components were identical to those found in the commercial injectable oil-based vaccines ALPHA JECT micro®6 (0.05 ml/fish dose) and ALPHA JECT®6-2 (0.1 ml/fish dose) (PHARMAQ AS, Norway). These vaccines contain five bacterial (Aeromonas salmonicida, Listonella anguillarum serotypes 1 and 2, Vibrio salmonicida, Moritella viscosa) and one viral antigen (infectious pancreatic necrosis virus, IPNV). A vaccine was also formulated without any antigen to serve as an adjuvant placebo control. A commercially available vaccine against SAV (Norvax®Compact

PD, MSD Animal Health), was used as reference to the new ALV405-based vaccine in some efficacy studies. Commercial vaccines were always used within the defined expiry date and according to manufacturer recommendations, except that they in lab check details trials were removed from the original container and transferred by standard sterile techniques to sterile 50 ml tubes that were blinded to the operator. Three different SAV strains were used either

as vaccine antigen (ALV405) or as challenge strains (ALV407 or ALV413). These strains originated from Atlantic salmon from Norway diagnosed with Pancreas disease. The genotype of these isolates was determined by sequencing of a 1.3 kB cDNA fragment covering the partial open reading frame encoding structural proteins as previously described [7]. All isolates were confirmed to share >99.8% nucleotide identity to the previously not reported SAV3 sequence DQ122130. Fish handling, including vaccination, sampling, mortality registration, sample processing and sample analyses was done blinded to the operator. Unvaccinated Atlantic salmon (S. salar L.) were sedated using Metacaine (MS222, PHARMAQ Ltd, UK), tagged for identification and vaccinated by intraperitoneal injection. Vaccination was always performed according to the recommendations of the manufacturer and temperature was set to 12 °C, unless otherwise stated. Tanks were monitored daily for clinical signs of disease or mortalities. In efficacy trials, fish were challenged with a SAV-strain heterologous to the vaccine strain. Fish were starved 24 h prior to challenge. On the day of challenge, the fish were anaesthetized with Metacaine and i.p. injected with 0.1 ml of the challenge strain. No mortality or abnormal behaviour was observed associated with the challenge procedure. Atlantic salmon (n = 80 per group) were tagged by ink tattooing or shortening of adipose fins or maxillae, and vaccinated (mean weight at vaccination: 37.

Parents and children received

Parents and children received IOX1 price counselling at home by the researcher (LW) using the motivational interviewing technique.16 This client-centred interview style is aimed at eliciting behavioural change and offers strategies to deal with resistance to change. The key principle of this interview technique is that the client indicates which goals are feasible to achieve and what help is needed to achieve them. As a minimum, the coordinating researcher initiated three counselling sessions. The client could receive more counselling

upon request. Home-based physiotherapy, aimed at increasing the capacity for daily activities in a situation relevant for the children, was tailored individually in response to the inventory of mobility-related problems experienced by children and parents. The children’s regular physiotherapists provided the home-based physiotherapy. The fitness training program was aimed at increasing lower-extremity muscle strength and anaerobic fitness, and was based on existing training protocols for children with cerebral palsy that have been proven to be effective for increasing muscle strength17 and anaerobic capacity.10 Children trained for 4

months, in groups of 2 to five, under the supervision of their physiotherapists. During the first 2 months, children trained for 1 hour, twice a week. In the following 2 months, training frequency was reduced to once a week, allowing Trichostatin A children to start participating in other physical activities during the intervention, as a result of the counselling. Each training session consisted of a warm-up, two lower-extremity muscle strength exercises with a weight vest (sit-to-stand and frontal/lateral step-up or half-knee raise), three anaerobic game-like exercises (for example, running or slaloms), and a cool-down. Training load was progressively increased during the training period. To ensure standardisation of the intervention, all

already physiotherapists in the intervention groups received two workshops, a training manual and two visits by the coordinating researcher during the training period. For each training session physiotherapists recorded the training load, the number of sets and repetitions of the exercises, and any adverse events. The control group continued their usual paediatric physiotherapy at the physiotherapy practice and did not receive counselling. The primary outcome was physical activity measured in two ways: an objective assessment of walking activity, and a subjective assessment of physical activity by parental report. Walking activity was assessed for 1 week using an ankle-worn bi-axial accelerometer,a which registered accelerations in the frontal and sagittal plane at regular time intervals. By sensitivity-adjusted calibration, as previously described,18 the accelerometer can accurately record strides (ie, complete gait cycles) for children with cerebral palsy by measuring the steps of one leg.

, 2003) In a pair of studies in male rats, Armario et al found

, 2003). In a pair of studies in male rats, Armario et al. found the surprising result that CORT levels in an open field were higher when paired with a

familiar versus an unfamiliar individual (Armario et al., 1983a and Armario et al., 1983b). In prairie voles, brief separation from a mate, but not from a same-sex sibling, increased depressive-like behavior (Bosch et al., 2009). Partner identity/familiarity was also found to be critical in a recently developed paradigm in which helping behavior is measured in rats. In this study, rats were motivated to rescue a trapped rat from restraint only if it was matched to their own strain, or a strain they had exposure to from birth; they find more were uninterested in freeing rats of an unfamiliar strain (Ben-Ami Bartal et al., 2014). The partner’s affective state also influences social buffering. In rats,

exposure to naïve, unshocked individuals can lessen stress responses relative to exposure to shocked individuals (Kiyokawa et al., 2004), similar to earlier findings in fear-conditioned rats (Davitz and Mason, 1955). PD0325901 cell line Future research on social buffering in rodents will hopefully make progress into questions of how and when social support is helpful, and what the optimal timing and type of that support is. Stress occurs as a response to an external stimulus that can be fleeting. In contrast, anxiety is a lasting state that is not an immediate response to the external environment. While stressful events can have impacts on social behavior, individual differences in anxiety also relate to variation in social behavior. For example, in humans, extraverted personality is associated with lower trait anxiety (Jylhä and Isometsä, 2006 and Naragon-Gainey et al., 2014). In rodents, the social interaction test – in which social interaction with a familiar or an unfamiliar individual are measured in an open arena – was initially developed to be an ethologically relevant measure of anxiety only behavior (File and Hyde, 1978). Social interaction times of individual male and female

rats are positively correlated with exploratory behavior in classic tests of anxiety-like behaviors. For example, individuals that spend more time in social interaction are more likely to spend more time in the center region of an open field or the light portion of a light-dark box (Starr-Phillips and Beery, 2014). Maternal care, particularly maternal grooming behavior, has lasting effects on offspring anxiety behavior. High levels of maternal grooming are associated with reduced anxiety behavior in two paradigms: pup reunion after brief separation and/or handling, and natural, individual variation in maternal care (reviewed in Gonzalez et al., 2001, Meaney, 2001 and Beery and Francis, 2011).

Although ArtinM and Jacalin have been described with regards to t

Although ArtinM and Jacalin have been described with regards to their immunostimulatory role on the innate immune system, as well as their adjuvant effects in murine models of immunization against protozoan parasites as Trypanosoma cruzi [14] and Leishmania spp [15] and [16], their use has not yet been investigated for neosporosis. Among the control and prevention measures of neosporosis, the development of effective vaccines presents interesting challenges, with the use of learn more murine models to characterize novel antigens and strategies for successful vaccination [17]. A wide range of approaches has been evaluated, including live or inactivated vaccines [18], [19], [20], [21] and [22],

subunit or recombinant vaccines using a number of parasite surface proteins [23], [24], [25] and [26], and recombinant virus vector vaccines [27]. All these strategies have shown that protection is sometimes partial and depends on the type of antigen and adjuvant used, as well the delivery

systems. For this reason, we evaluated in the present study the role of the lectins ArtinM and Jacalin as adjuvants in immunization of mice against N. caninum infection associated or not with Neospora lysate antigen. N. caninum tachyzoites (Nc-1 isolate) [28] were maintained by serial passages in Vero cell line cultured in RPMI 1640 medium supplemented with 2 mM glutamine, 100 U/ml penicillin, 100 μg/ml streptomycin, and 2% heat-inactivated selleck chemical calf fetal serum (CFS) at 37 °C in a 5% CO2 atmosphere. Parasite suspensions were obtained as previously described [29]. Briefly, tachyzoites were harvested by scraping off the cell monolayer after 48–72 h of infection, passed through a 26-gauge needle to lyse any remaining intact host cell, and centrifuged at low speed (45 × g) for 1 min at 4 °C to remove host cell debris. The supernatant containing parasite suspension was collected, washed twice (700 × g, 10 min,

4 °C) in phosphate-buffered saline (PBS, pH 7.2) and the resulting pellet was resuspended in PBS. Parasites were counted in hemocytometric chamber using 0.4% Trypan blue vital staining and stored at −20 °C until antigen preparation before or immediately used for challenge of immunized animals. Neospora lysate antigen (NLA) was prepared as described elsewhere [29]. Parasite suspension (1 × 108 tachyzoites/ml) was treated with protease inhibitors (1.6 mM PMSF, 50 μg/ml leupeptin and 10 μg/ml aprotinin) and lysed by ten freeze–thaw cycles followed by ultrasound on ice. After centrifugation (10,000 × g, 30 min, 4 °C), supernatant was collected, filtered in 0.22 μm membranes and its protein concentration determined by bicinchoninic acid (BCA) assay [30]. NLA aliquots were stored at −70 °C until their use in immunization of mice, serological tests and cytokine production assays. N.

276/CEP-HUJM/06) Data were obtained from the following sources:

276/CEP-HUJM/06). Data were obtained from the following sources: the PSAEFI database, which is operated by the NIP and uses software specifically designed to register,

store and transmit data related to cases of AEFIs reported in Brazil; the Brazilian National Ministry of Health (Unified Health Care System, Information Technology Department—for Lapatinib mouse data on the number of doses administered and for demographic data); and the Pan American Health Organization/Brazilian National Ministry of Health Interagency Health Information Network, for social indicators, health care coverage data and infant mortality rates. We analyzed the following variables: gender and age of the affected infants; geographic data (AEFI occurrence by city, state and macroregion); temporal aspects (year of AEFI occurrence and the interval between vaccination and the onset of symptoms); AEFI characteristics (type, severity, type of treatment—inpatient or outpatient—and length of hospital stay). The PSAEFI database was made available in the dBase format and converted for use with the VE-821 cell line Statistical Package for the Social Sciences, version 14.0 (SPSS Inc., Chicago,

IL, USA). Data consistency was verified, duplicate entries were eliminated, and reports that did not match the case definition were excluded, as well cases that did not meet the study criteria. Reports of multiple AEFIs related to a single vaccination dose in the same infant were classified as individual cases involving two or more events. The PSAEFI database covered the period from 2002 to 2005, updated in March of 2006. Cases reported in 2002 were excluded, since that was the year in which the transition from the DTPw vaccine to the DTwP/Hib vaccine occurred. Cases reported in 2005 were also excluded, since the

data for that year were incomplete, due to reporting lags. We initially carried out a descriptive analysis of the AEFIs, based on the study variables. The reported AEFI rates for infants less than one heptaminol year of age were estimated, the numerator being the number of reported cases and the denominator being the number of doses of DTwP/Hib vaccine administered during the study period. For comparisons of proportions, Pearson’s chi-square test was used, and means were compared using the Student’s t-test. The level of statistical significance was set at p ≤ 0.05. To estimate the sensitivity of the PSAEFI, we used the reference values established in a study conducted in Brazil by Martins et al. [13], which involved active surveillance for AEFIs associated with DTwP/Hib vaccine from a single producer. Data related to HHEs and convulsions were used in the sensitivity estimation. We used Pearson’s correlation coefficient (statistical significance, p ≤ 0.

This evidence supported by complete acid hydrolysis yielding gluc

This evidence supported by complete acid hydrolysis yielding glucose in the aqueous layer

of compound 5 only and apigenin was detected in the organic layer in see more both compounds (CoPC). 91H NMR spectrum showing an AX system exhibiting two ortho doublets each integrated for two protons of H-2′/6′, and of H-3′/5′ indicating 1′,4′-disubstituted B-ring of both compounds. The down-field shift of both H-6 and H-8 to 6.43 and 6.74 meta doublet and the anomeric proton signal at δ 5.22 ppm gave evidence for the presence of β-glycosidic moiety at 7-position in compounds 5. 1813C NMR spectra showed the carbon signals characteristic of apigenin nucleus and its glycosidation at 7-OH in compound 5 was indicated by slight up-field shift of C-7. The structure of the compounds was also confirmed by negative ESI-MS molecular ion peak of compound 9 as a free apigenin aglycone at m/z 269 [M–H]− and of compounds 5 at m/z 431 [M–H]− as apigenin glucoside and was compared with published data. 9, 17 and 21 1H NMR spectra of compound 11 showed flavanone structure indicated by the appearance of dd signal at δ 5.47 ppm integrated for one

proton of two J values (J = 12.8 and 2.8 Hz), assigned for H-2 and the dd of dd signal at δ 2.71 ppm, (1H, J = 17.0, 12.8 and 2.8 Hz, H-3). Negative ESI-MS of compound 11 at m/z 301 [M−H]− indicated its structure as naringenin. 17 and 22 Compound 8 was obtained as yellow amorphous powder (30 mg), showed UV spectra of two major absorption bands in methanol at λmax 265 nm (band II) and at λmax 366 nm (band I), Dolutegravir chromatographic properties: Rf values; 0.68 (S1), 0.14 (S2); dull yellow spot under UV-light with no change on exposure to ammonia vapors, it gave greenish yellow color with FeCl3 and Naturstoff spray reagents. Negative ESI-MS spectrum exhibited a molecular ion peak at m/z 299 [M−H]−. 1H NMR (300 MHz, DMSO-d6): δ ppm; 12.60 (1H, s, OH-5), 7.80 (2H, d, J = 8.7 Hz, H-2′/6′), 7.34 (2H, d, J = 8.7 Hz, H-3′/5′), 6.40 (1H, d, J = 1.8 Hz, H-8), 6.20 (1H, d, J = 1.8 Hz, H-6), 3.81 (3H,

s, OCH3-4′). 13C NMR (75 MHz, TCL DMSO-d6): δ ppm 176.39 (C-4), 164.50 (C-7), 161.30 (C-5), 159.20 (C-4′), 156.68 (C-9), 147.35 (C-2), 136.28 (C-3), 130.10 (C-2′/6′), 120.53 (C-1′), 116.90 (C-3′/5′), 104.22 (C-10), 98.75 (C-6), 93.91 (C-8), 56.40 (OCH3-4′). The methylation of the hydroxyl group at 4′ was evident by the downfield shift of 3′/5′ protons (δ 7.34 ppm) and their carbons (δ 116.90 ppm), compared to that of kaempferol (δ 6.85 and 115.0 ppm, respectively) and the slight upfield shift of carbon of C-4 (δ 159.20 ppm) compared to that of kaempferol (δ 160.0 ppm).