Results published by Gad et al indicated that extracellular slim

Results published by Gad et al. indicated that extracellular slime significantly influences PS learn more uptake by S. aureus cells, MRT67307 concentration however an unambiguous conclusion was not possible due to the significant differences in both the uptake and PDI efficacy of the three PS tested, namely chlorine e6 , poly-L-lysine-chlorine e6 and methylene blue [48]. S. aureus strains tested in our experimental conditions expressed no statistical correlation between PS uptake and PDI effectiveness, nevertheless the highest accumulation of PS was observed for the most efficiently killed strain 472 (3.4 log10 reduction in viable

count units), as well as the lowest PS accumulation was observed in the case of the most resistant to PDI – strain 1397 (0.2 log10 reduction in viable count units) (Figure 3). The mean uptake level was 47.4 μg/mg of total protein content and 7.3 μg/mg of total protein content, for strains 472 and 1397, respectively. The results concerning uptake level in strains 472 and 1397 remain in a good agreement with our previous reports, where the same set of clinical isolates was analyzed but with the use of a different PS, namely PpIXArg2 [25]. Based on our previous and present results we conclude that the PS uptake process is not the main determinant of PDI effectiveness, at least for the porphyrin-based photokilling. We and other authors propose subsequent

factors which may contribute and explain the differences in PDI efficacy of bacteria [25, 49], eg. cellular repair systems or level of antioxidant enzymes. Sod SB-715992 mw activity and transcript level increase after PDI in PDI-susceptible strains The participation of superoxide

dismutase in oxidative stress resistance, and also in photodynamically generated reactive oxygen species is obvious. However, the role of Sod activity in PDI of bacteria has not been studied so far. There is few literature data on the association of Sod activity and photodynamic inactivation studies, and to the best of our knowledge they all concern eukaryotic cells. It was proposed for example that inhibition of Mn-Sod activity potentiates the antitumor effectiveness of photodynamic therapy in several cell lines and also in a mouse model Fludarabine order of tumorigenesis [50]. Our attempt was to assess Sod activity in clinical isolates of S. aureus and to compare its basic level between PDI-resistant and PDI-susceptible bacteria. Basic Sod activity levels differed only slightly between PDI-resistant and PDI-susceptible strains (33.2 ± 15 U/mg and 23.6 ± 4 U/mg, respectively), which can be expected as S. aureus is not constantly exposed to elevated levels of oxidative stress After PDI treatment we observed about a 4-fold increase of Sod activity but only in strains susceptible to PDI. Sod expression is probably induced by a particular signal.

However, structural changes in ZnO NWs are induced, and the

However, structural changes in ZnO NWs are induced, and the PLX-4720 research buy sensibility of some of their properties to low-energy ion irradiation is revealed. The defects found here can be considered as a result of the precipitation

of point defects generated during the irradiation. Although defect formation and surface roughness are usual in the irradiated NWs, some NWs undergo higher modifications induced by the Ar+ irradiation. Thus, HR-TEM studies revealed that some of the irradiated ZnO NWs were surrounded by a degraded sheath with the same crystalline orientation of the NW core (Figure 7a). Spots shown in the FFT images from these superficial structures were correlated with the inter-planar distances of FDA approved Drug Library cost ZnO. In the extreme case, other irradiated ZnO NWs are surrounded by crystalline nanoparticles with the same ZnO structure but with different orientations with respect to the core (Figure 7b,c), causing the formation of moiré fringes generated by the overlapping of the nanoparticle and NW lattices. In addition, the compositional analysis carried out by EDX spectroscopy (not shown here, see Additional file 3) confirmed that the superficial structures were made up of ZnO. The origin of this sheath is unclear, but it could be the

after effect of the sputtering process due to the Ar+ impingement. Taking into account all the above data, it can be concluded that the ZnO removed from near the surface of the NWs or even from the annihilation of thinner NWs could sublimate and finally be re-deposited on the remaining NWs giving rise to a core/shell structure of a single ZnO crystal NW core surrounded by a ZnO polycrystalline shell. In addition, the possibility of zinc segregation in our irradiated samples cannot be excluded either. The formation of BMS345541 concentration adatoms on the surface after the irradiation is possible [46], and this surface can grow by the agglomeration

of the engendered adatoms Erythromycin during the early stages of bombardment. Figure 6 HR-TEM images of ZnO NW. (a) HR-TEM image recorded on an irradiated ZnO NW (fluence = 1017 cm−2) confirming the high crystalline quality of the nanowire; the inset shows the corresponding FFT recorded along the [0001] zone axis. (b) HR-TEM micrograph of one individual irradiated ZnO NW (fluence = 1017 cm−2) faceted tip. The inset corresponds to the small squared region of the tip, showing the appearance of one extra plane (edge dislocation). Figure 7 HR-TEM micrographs of ZnO nanowires irradiated with a fluence of 10 17 cm −2 . Showing (a) an example of the etched surface (in this case, the removed material layer depth is about 10 nm). In (b, c), redeposited crystalline particles, with different orientations in the cross-sectional surface and the inner region of the wire, respectively, are observed.

Significant differences in the mean number of Spots per Cluster b

Significant differences in the mean number of Spots per Cluster between Bp K96243 (wt) and Bp ∆hcp1 or Bp ∆bsaZ were observed (Figure  4C) and were probably due at least in part to an increase in the mean Cluster Area in Bp K96243 infected samples (see above). The inability to see an Tubastatin A increase in the total number of bacterial spots during the intracellular replication step (10 h post-infection) compared to early uptake or phagocytosis step (2 h post-infection) may partly be due to the killing of the internalized bacteria by the professional phagocytes. Although bacteria can be detected and quantitated by HCI, this technique it does not measure bacterial viability. Altogether,

these results show that the HCI MNGC assay can be implemented to quantitatively characterize mutant Bp strains phenotype based on cellular morphological changes induced in infected host cells. Furthermore, our HCI results regarding reduced MNGCs and bacterial spots following infection with

Bp ∆hcp1 or Bp ∆bsaZ mutants compared to wild CX-6258 in vitro type Bp at 10 h post-infection are consistent with previously published data [44, 58]. Figure 4 Validation of the MNGC assay (10 h post-infection). (A) Same as Figure  3A, except that macrophages were fixed at 10 h post-infection for different strains of Bp. Scale bar: 90 μm. (B) HCI quantification of learn more several cellular features of MNGC formation and (C) bacterial features from images acquired as described in Figure  3A. In B and C means +/- SD are shown of 6 replicates per plate, 3 plates run on independent days (n = 18). For each replicate

well >1000 nuclei were analyzed. **** p <0.0001; *** p < 0.001. Screening of a small molecule library in the MNGC assay To discover possible cellular pathways that are hijacked by Bp and that might regulate cell-to-cell fusion, we used the HCI MNGC assay to screen oxyclozanide a small, functionally focused collection of 43 compounds in duplicate. The compounds in this collection are annotated as targeting pathways involved in the epigenetic regulation of chromatin (See Experimental procedures for details). Bacterial infection induced epigenetic changes such as histone modifications, DNA methylation, chromatin remodeling, which in turn affect host cell signaling has been shown to either promote host defense or increase susceptibility to infection [71]. To investigate Bp induced epigenetic changes which in turn may modulate MNGC formation, RAW264.7 macrophages were first pre-treated with the compound library and then infected with Bp K96243. Cells treated with DMSO (Vehicle) and infected with Bp K96243 were considered as negative controls. At 8 h post-infection cells were fixed and processed in IF for the HCI MNGC assay as described above. Representative images of macrophages that were not infected (mock) or infected with Bp K96243 in presence of DMSO or identified hit compounds are shown in Figure  5A.

****A subject was considered responder (no overruling) if at leas

****A subject was considered responder (no overruling) if at least 2 cultures from sputa collected at least 25 days apart

were MGIT culture negative (as well as all intermediate cultures) and this culture negativity was not CBL0137 in vivo Followed by a confirmed positive MGIT culture (or a single positive sputum result after which the subject completed or discontinued the trial) up to the time point being analyzed. aContinuing patients: refers only to patients continuing follow-up, excluding subjects withdrawing prior to stated time points (24 weeks, 72 weeks, and 104 weeks). Source: data from [17]. BDQ bedaquiline, DST Drug susceptibility testing, MGIT Mycobacteria Growth Indicator Tube, mITT modified intention to treat, Na not available Fig. 3 XAV-939 concentration Summary of third Phase 2 study data from [17]. BDQ bedaquiline, DS drug susceptible, mITT modified intention to treat, TB tuberculosis. aContinuing patients: refers only to patients continuing follow-up, excluding subjects withdrawing prior to stated time points (24 weeks) The First Phase 2 Study of Bedaquiline In the one randomized controlled trial on efficacy for which published data are available [14, 18, 19], patients aged 18–65 years with MDR-TB from six centers in South Africa were enrolled. In total, 47 patients were randomized to either bedaquiline or a placebo for 8 weeks

(Table 3) [17–19]. Both groups also took an optimized background regimen (OBR) comprising standard treatment for MDR-TB, which was considered

to be most appropriate by treating clinicians in that setting. Treatment outcomes have been published in three separate reports – for 8 weeks [18], Kinase Inhibitor Library datasheet 24 weeks [19], and 104 weeks [19] of follow-up. Table 3 Summary Urease of first Phase 2 trial: Study C208 Stage I [17–19] Study sites Inclusion criteria Exclusion criteria Intervention: duration and regimens Number of MDR patients (BDQ + OBR/OBR) Findingsa 6 sites in South Africa Hospitalized patients Past treatment for MDR-TB 1. Initial 8 week phase, randomized to either:  (a) BDQ + OBR (400 mg daily for 2 weeks then 200 mg 3 times per week for 6 weeks) OR  (b) OBR alone 47 (23/24) Culture conversion up to 8 weeks [18]  (a) Time to culture conversion using time point of 8 weeks: BDQ + OBR < OBR: HR 11.8 (2.3, 61.3), P = 0.0034**  (b) Proportion culture conversion for BDQ + OBR (10/21, 47.6%) > OBR alone (2/23, 8.7%), P = 0.004** Aged 18–65 years XDR or pre-XDR (resistant to AG [other than streptomycin] or FQ) Then, 2. Followed by OBR, for both groups, up to 2 years OBR in this study comprised kanamycin, ofloxacin, ethionamide, pyrazinamide, and cycloserine or terizidone Overall  Median age 33 years  Median BMI 18.3  Cavitations on X-ray 85%  Male 74%  HIV prevalence 13% Culture conversion up to 24 weeks [19]  (a) Time to culture conversion using time point of 24 weeks: BDQ (78 days) + OBR < OBR (129 days) HR 2.3 (1.1, 4.7), P = 0.031  (b) Proportions culture conversion for BDQ + OBR (81.0%) > OBR alone (65.2%), P = 0.

) as natural antioxidants Molecules 2008, 13:1455–1464 PubMedCro

) as natural antioxidants. Molecules 2008, 13:1455–1464.PubMedCrossRef 33. Safiyeh S, Fathallah FB , Vahid N, Hossine N, Habib SS: Antidiabetic Idasanutlin price effect of Equisetum arvense L. (Equisetaceae) in streptozotocin-induced diabetes in male rats. Pak J Biol Sci 2007, 10:1661–1666.PubMedCrossRef 34. Clare BA, Conroy RS, Spelman K: The diuretic effect in human subjects of an extract of Taraxacum officinale folium over a single day. J Altern Complement Med 2009, 15:929–934.PubMedCrossRef

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Figure 8 DFS and M2 median in patients underwent BCG instillation

Figure 8 DFS and M2 median in patients underwent BCG instillation.

Discussion Bladder cancer is one of the most widespread cancers afflicting men and women, and its incidence grows exponentially each year. Early studies reported that the macrophages increase in bladder cancer is associated with high survival and invasive selleckchem capacity [14]. Activated macrophages promote tumor-genesis INCB28060 solubility dmso through the expression of growth factors and matrix proteases, promotion of angiogenesis and suppression of anti-tumoral immune response [14, 15]. As Dufresne et al described in their study [16], pro-inflammatory M1 should suppress tumor growth; instead anti-inflammatory M2, via production of IL-10 and other soluble factors, suppress the anti-tumoral effects of M1. In many

human neoplasms, including LY2874455 mouse lung, breast, cervix, ovary and pancreas cancers, the presence of extensive TAM infiltrate correlates with poor prognosis. In other tumors, including brain and prostate cancer, there is conflicting evidence regarding the role of macrophages in survival outcomes [17–21]. The basis for these conflicting data may be explained considering that in these studies tumor-associated macrophages were detected only by the immunohistochemical analysis of CD68+ cells. In fact both M1 and M2 phenotypes share the expression for CD68, therefore the use of CD68 alone might not represent a reliable marker in evaluating the real impact of the two subtypes. The role of TAM in non-muscle invasive bladder cancer was previously investigated by Ayary et al finding a role of this infiltrate in modulating BCG efficacy [7]. Anyway this work did not take into account the real role of the two opposite macrophage population. In our study we used double-staining for CD68/NOS2 as markers for M1 macrophages and CD68/CD163 as markers for M2 macrophages to be in accordance with the most part of

previously published studies that performed a phenotypic characterization of macrophages polarization [17, 20–27]. The haemoglobin scavenger receptor, CD 163, is expressed almost exclusively on macrophages and monocytes, and it is strongly upregulated by anti-inflammatory cytokines, important for M2 polarization. Conversely, macrophages M1 polarized by exposure to interferon (IFN)-γ or LPS up-regulate oxyclozanide inducible nitric oxide synthase (iNOS) to convert into nitric oxide (NO) that combining with oxygen radicals leads to the formation of cytotoxic peroxynitrite. These markers are not absolutely specific, for example CD68 has been found in immature CD1a-positive dendritic cells. CD163 is also expressed in some dendritic cells, and iNOS is expressed by endothelial cells as well as by arterial wall smooth muscle cells. For these reasons we have given particular attention to cell morphology in order to minimize potential bias [20–23, 28–31]. Conclusion In this study we investigated the role of tumor-infiltrating macrophages in non-muscle invasive bladder cancer.

The presence of TNF-α and IL-10 in the culture supernatants was a

The presence of TNF-α and IL-10 in the culture supernatants was assessed using Quantikine ELISA kits. The sensitivities of TNF-α and IL-10 assays were 1.6 pg/ml and 3.9 pg/ml, respectively. Statistical analysis Data are presented as means ± SEMs. Statistical significance was verified using nonparametric Selleck MK 8931 Wilcoxon’s signed-rank or Mann–Whitney U tests. The Statistica 8.0 (StatSoft, Poland) software package was used for statistical calculations. Statistical significance was defined as p ≤ 0.05. Results Expression of CD14 on resting MØ In order to confirm that THP-1 cells in the presence of PMA were differentiated after 24 hours,

the surface expression of CD14 molecule was estimated. Similarly to other researchers [17, 18] we found that CD14 surface expression on monocytes (i.e., THP-1 cells prior to differentiation) was greater than on PMA-treated THP-1 cells (i.e., after differentiation to MØ), with MFI values of 99 ± 10 and 45 ± 7 (n = 6), respectively. MØ uptake of ∆kstD mutant and wild-type strains The percentage of resting MØ and IFN-γ-activated MØ involved in the uptake of Mtb strains

was approximately 30-40%. Moreover, both types of MØ ingested opsonized and non-opsonized wild-type and ∆kstD strains equally well (Figure  1A), and took up similar numbers of check details bacteria of both strains (Figure  1B). Figure 1 Ingestion of Mtb by MØ. Resting and IFN-γ-activated MØ were infected with FITC-labeled wild-type or ∆kstD strains for 2 hours. (A) IKK inhibitor Percentage of MØ infected with Mtb strains; (B) Percentage distribution of MØ with the counted number of bacteria engulfed by one phagocyte Interleukin-3 receptor (per MØ). Percentage of infected MØ was calculated according to the formula: MØ with bacteria *100/ number of counted MØ and expressed as means ± SEMs (n = 5). Mtb ops – bacteria opsonized, Mtb non-ops – bacteria

non-opsonized. Intracellular replication of wild-type and ∆kstD strains Initially, we compared the survival of the wild-type and ΔkstD strains in resting MØ 1, 2, 4, 6 and 8 days post-infection. The detachment of MØ monolayer was observed on day 8 and therefore this time point was excluded from the subsequent experiments. We did not observe differences in CFUs count at 1 and 2 days post-infection, therefore day 1 was also excluded from the subsequent experiments. As shown in Figure  2, the numbers of viable wild-type and ΔkstD bacilli were similar up to 2 days post-infection, slightly and insignificantly different up to 4 days and statistically different on day 6, suggesting differential growth of mutant and wild-type strains. To test this, we compared the intracellular replication of ΔkstD and wild-type Mtb in resting and IFN-γ-activated MØ 6 days after infection.

Schneider-Stock R, Boltze C, Jäger V, Epplen J, Landt O, Peters B

Schneider-Stock R, Boltze C, Jäger V, Epplen J, Landt O, Peters B, Rys J, Roessner A: Elevated telomerase activity, c-MYC-, and hTERT mRNA expression: association with tumour progression in malignant lipomatous tumours. J Pathol 2003, 199:517–525.PubMedCrossRef 11. Ohali A, Avigad S, Cohen IJ, Meller I, Kollender Y, Issakov J, Gelernter I, Goshen Y, Yaniv I, Zaizov R: Association between telomerase activity and outcome in patients with nonmetastatic Ewing family of tumors. J Clin Oncol 2003, 21:3836–3843.PubMedCrossRef 12. Sanders RP, Drissi R, Billups CA, Daw NC, Valentine MB, Dome JS: Telomerase expression click here predicts unfavorable outcome in osteosarcoma. J Clin Oncol 2004, 22:3790–3797.PubMedCrossRef

13. Fuchs B, Inwards C, Scully SP, PF-6463922 in vivo Janknecht R: hTERT Is highly expressed in Ewing’s sarcoma and activated by EWS-ETS

oncoproteins. Clin Orthop Relat Res 2004, 426:64–68.PubMedCrossRef 14. Sabah M, Cummins R, Leader M, Kay E: Immunohistochemical detection of hTERT protein in soft tissue sarcomas: GS-9973 nmr correlation with tumor grade. Appl Immunohistochem Mol Morphol 2006, 14:198–202.PubMedCrossRef 15. Ambrosino C, Nebreda AR: Cell cycle regulation by p38 MAP kinases. Biol Cell 2001, 93:47–51.PubMedCrossRef 16. Bradham C, McClay DR: p38 MAPK in development and cancer. Cell Cycle 2006, 5:824–828.PubMedCrossRef 17. Coulthard LR, White DE, Jones DL, McDermott MF, Burchill SA: p38(MAPK): stress responses from molecular mechanisms to therapeutics. Nintedanib (BIBF 1120) Trends Mol Med 2009, 15:369–379.PubMedCrossRef 18. Wang Z, Kyo S, Takakura M, Tanaka M, Yatabe N, Maida Y, Fujiwara M, Hayakawa J, Ohmichi M, Koike K, Inoue M: Progesterone regulates human telomerase reverse transcriptase gene expression via activation of mitogen-activated protein kinase signaling pathway. Cancer Res 2000, 60:5376–5381.PubMed 19. Alfonso-De Matte MY, Yang H, Evans MS, Cheng JQ, Kruk PA: Telomerase is regulated by c-Jun NH2-terminal kinase in ovarian surface epithelial

cells. Cancer Res 2002, 62:4575–4578.PubMed 20. Maida Y, Kyo S, Kanaya T, Wang Z, Yatabe N, Tanaka M, Nakamura M, Ohmichi M, Gotoh N, Murakami S, Inoue M: Direct activation of telomerase by EGF through Ets-mediated transactivation of TERT via MAP kinase signaling pathway. Oncogene 2002, 21:4071–4079.PubMedCrossRef 21. Goueli BS, Janknecht R: Upregulation of the Catalytic Telomerase Subunit by the Transcription Factor ER81 and Oncogenic HER2/Neu, Ras, or Raf. Mol Cell Biol 2004, 24:25–35.PubMedCrossRef 22. Takakura M, Kyo S, Inoue M, Wright WE, Shay JW: Function of AP-1 in transcription of the telomerase reverse transcriptase gene (TERT) in human and mouse cells. Mol Cell Biol 2005, 25:8037–8043.PubMedCrossRef 23. Matsuo T, Shay JW, Wright WE, Hiyama E, Shimose S, Kubo T, Sugita T, Yasunaga Y, Ochi M: Telomere-maintenance mechanisms in soft-tissue malignant fibrous histiocytomas. J Bone Joint Surg Am 2009, 91:928–937.PubMedCrossRef 24.

0 nm, corresponding to the fundamental thickness of three single

0 nm, corresponding to the fundamental thickness of three single atomic layers of MoS2. Raman spectrum was used to confirm the few-layered MoS2 nanosheets. Generally, single-layer MoS2 exhibited strong bands at 384 and 400 cm−1, which are associated with the in-plane vibrational (E 2g 1) and the out-of-plane vibrational (A 1g) modes, respectively [26]. As the layer number increased, a red shift of the (E 2g 1) band and a blueshift of the A 1g bands would ABT-263 clinical trial be observed. Figure 3d shows the Raman spectra of the pristine MoS2 powder and the exfoliated MoS2 nansheets

(sonicated in DMF for 10 h). Results indicate that the (E 2g 1) and A 1g bands for the pristine and MoS2 nanosheets are located at 376.90 and 379.21 cm−1, and 403.67 and 401.20 cm−1, respectively. The energy difference between two Raman peaks (Δ) can be used to identify the number of MoS2 layers. It can be seen that the Δ value obtained for the two samples

is about 26.77 and about 20.62 cm−1, respectively, indicating the existence of the two to three layered MoS2 nanosheets after sonicating pristine MoS2 powders in DMF for about 10 h, which is the same as the TEM and AFM results. Figure 2 TEM images of the exfoliated MoS 2 nanosheets and their corresponding SAED results. (a, d) 2 h, (b, e) 4 h, and (c, f) 10 h. Figure 3 HRTEM, TEM, and AFM images and Raman spectra of MoS 2 nanosheets and MoS 2 powder. (a) The HRTEM image of exfoliated MoS2 nanosheets (10 h); the d 100 is 0.27 nm. The inset is the FFT pattern of the sample. (b) Marginal TEM image of exfoliated MoS2 LCL161 chemical structure nanosheets (10 h). (c) Tapping mode AFM image of the exfoliated MoS2 nanosheets (10 h). (d) Raman spectra for the pristine MoS2 powder and exfoliated MoS2 nanosheets (10 h). TEM results indicate that few-layered MoS2 nanosheets can be obtained after sonicating pristine MoS2 powders in DMF

with different times; at the same time, the size (the lateral dimension for the nanosheets) of the nanosheets Dipeptidyl peptidase decreases gradually, which motivated us to carry out a comparative study on the size-property correlation magnetic properties of the MoS2 nanosheets. Figure 4a shows the magnetization versus magnetic field (M-H) curves for the pristine MoS2 powders and the exfoliated MoS2 nanosheets (sonicated in DMF for 10 h). As can be seen, besides the diamagnetic (DM) signal in the high-field region, the exfoliated MoS2 nanosheets show the ferromagnetism (FM) signal in lower field region as well, compared to the pristine MoS2 powders which shows the DM signal only. After deducting the DM signal, the measured saturation magnetizations (M s) for the MoS2 nanosheets (10 h) are 0.0025 and 0.0011 emu/g at 10 and 300 K, respectively (Figure 4b), which are comparable to other dopant-free diluted magnetic semiconductors [29, 30]. selleck inhibitor Dependence of the M s on ultrasonic time of the obtained MoS2 nanosheets is shown in Figure 4c.

Figure 1 Standard curve for the indirect competitive ELISA made w

Figure 1 Standard curve for the indirect competitive ELISA made with purified antigens of B. cinerea covering a range of antigen concentration between 0 and 100 μg mL -1 . Each value is based on five determinations. The error Akt assay values represent the standard deviation. check details The coefficient of variation (CV) for

the determination of 25 μg mL-1 B. cinerea was below 4% (six replicates). The precision of the ELISA assay was checked with control solutions of 5, 25 and 75 μg mL-1 B. cinerea purified antigens concentrations. The within-assay precision was tested with 5 measurements in the same run for each sample. These series of analyses were repeated for three consecutive days in order to estimate the between-assay precision. The results obtained are presented in Table 1. The B. cinerea immunoassay showed good precision; the CV within-assay values were below 4% and the between-assay values were below 7%. Table Salubrinal supplier 1 Within-assay precision (five measurements in the same run for each control) and between-assay precision (five measurements for each control, repeated for three consecutive days). a Control solution Within-assay Between-assay   Mean CV % Mean CV % 5 μg mL-1 5.27 3.51 5.87 4.56 25 μg mL-1 24.56 2.87 25.30 5.80 75 μg mL-1 75.92 3.15 74.17 6.58 a μg mL-1 B. cinerea antigen The correlations between

the lesion diameters of the fruit samples and the amount of B. cinerea antigen detected by the proposed method from infected fruit extracts samples obtained at 4, 7, and 10 d of incubation (25°C), respectively, are presented in Table 2. These results showed a correlation between the damage level and the amount of fungus present in the fruit samples. B. cinerea was detected even when the fruit rot was not visible yet but perhaps it had begun to germinate (about 4 days after inoculation

and incubation of the fruit samples). Tests in which the fruit samples were infected using different conidia suspensions of B. cinerea were also made: 1 × 104, 1 × 105, and 1 × 106 conidia mL-1, respectively. Absorbance measured after 4 d of incubation (25°C) did not show significant differences (data not shown), because Tideglusib the method only detect germ tubes in the precise moment they appear, and the quantity of germinated conidia does not always depend of the quantity of inoculated conidia. Table 2 Correlation between the lesion diameters of the fruit samples, the amount of B. cinerea antigen determinated by the ELISA developed and the DNA of B. cinerea quantified from infected fruit extracts samples obtained at 4, 7, and 10 days of incubation (25°C), respectively. Fruit samples Days of incubation bLesion diameters (mm/rot) c B. cinerea antigen (μg mL-1) c DNA- B. cinerea (μg mL-1) Apples (Red-delicious) a Control uninfected not detected not detected   4 not visible 10.53 ± 0.48 10.22 ± 0.53   7 20.11 ± 0.54 40.67 ± 0.37 38.75 ± 0.41   10 50.09 ± 4.49 69.08 ± 0.43 71.19 ± 0.