This report presents interim results from a series of studies of the lumbosacral region of the spine. A new classification of the lumbosacral transitional vertebra (LSTV) is proposed. An LSTV was found with similar frequency in patients and in population samples. The radiological findings were related to the presence of symptoms and to evidence of urological problems. Whilst Brocher (1973), Rubin (1971), and others have considered an LSTV to be of importance because it should lead to unfavourable weight bearing in the lower spine, the present extensive material shows that there is no relation between an LSTV and low backache. There may be a genetic factor involved in the various types of LSTV.

High-grade gliomas (HGG) have a poor outcome, however, prognostic subgroups of patients may be individuated by some clinico-biological parameters. It was recently demonstrated that the main response of HGG to therapy is autophagic death. Autophagy is involved in tumor suppression, and is defective in HGG, in which we previously found an underexpression of beclin 1 autophagic gene protein product. Underexpression of Beclin 1 protein has been correlated to poor patient outcome in other tumor types. In this paper, the prognostic role of Beclin 1 expression in HGG patients was investigated. We first evaluated the tumor cell cytoplasmic expression of Beclin 1 protein (BPCE), in a sample of 76 HGG by immunohistochemistry, and compared it with cell proliferation and apoptosis. We found high BPCE score positively correlated with apoptosis, and negatively with cell proliferation (p < 0.05). We then correlated BPCE score with survival and other prognostic parameters (histological grading, MGMT gene methylation status, age, patient performance status according to the Karnofski classification (KPS), extent of surgery, radiation therapy (RT) modality, temozolomide chemotherapy (TMZ CHT), and optimal/suboptimal post-surgical treatment). Forty-seven (61.8%) and twenty-nine (38.2%) patients showed high and low BPCE scores, respectively. BPCE showed statistically significant correlations with survival both at the univariate (p = 0.03) and multivariate analysis (p = 0.037). High BPCE was also positively correlated with high KPS values (p = 0.023), and with the accomplishment of an optimal postoperative therapy (p = 0.037). Furthermore, among patients showing a MGMT methylated gene, survival was significantly higher in cases with a higher BPCE score. BPCE score might be added to pathological evaluation of HGG for prognostic purposes.

Glioblastoma (GB) has a poor prognosis, despite current multimodality treatment. Beside surgical resection, adjuvant ionizing radiation (IR) combined with Temozolomide (TMZ) drug administration is the standard therapy for GB. This currently combined radio-chemotherapy treatment resulted in glial tumor cell death induction, whose main molecular death pathways are still not completely deciphered. In this study, the autophagy process was investigated, and in vitro modulated, in two different GB cell lines, T98G and U373MG (known to differ in their radiosensitivity), after IR or combined IR/TMZ treatments. T98G cells showed a high radiosensitivity (especially at low and intermediate doses), associated with autophagy activation, assessed by Beclin-1 and Atg-5 expression increase, LC3-I to LC3-II conversion and LC3B-GFP accumulation in autophagosomes of irradiated cells; differently, U373MG cells resulted less radiosensitive. Autophagy inhibition, using siRNA against BECN1 or ATG-7 genes, totally prevented decrease in viability after both IR and IR/TMZ treatments in the radiosensitive T98G cells, confirming the autophagy involvement in the cytotoxicity of these cells after the current GB treatment, contrary to U373MG cells. However, rapamycin-mediated autophagy, that further radiosensitized T98G, was able to promote radiosensitivty also in U373MG cells, suggesting a role of autophagy process in enhancing radiosensitivity. Taken together, these results might enforce the concept that autophagy-associated cell death might constitute a possible adjuvant therapeutic strategy to enhance the conventional GB treatment.

Glioblastomas (GBMs), the most common primary malignancies of the central nervous system, are highly aggressive and heterogeneous, and remain a dramatic therapeutic challenge. Markers mirroring the complex molecular profile of GBMs that are predictive of patient outcomes are needed to define novel multi-targeted treatment strategies. Resistance to current GBM therapies is partly due to a subpopulation of stem-like and other self-renewing cells (hereafter called glioma stem-like cancer cells, GSCC), which are therefore of key interest as therapeutic entry points. Wnt and Hedgehog are among the main pathways involved in GSCC renewal. β-catenin and Gli1 are markers of Wnt and Hedgehog activation respectively and both pathways are known to be altered in gliomas. To date, there are no investigations of Gli1 protein expression in GBM tissue, and recently a high expression of β-catenin has been found to have a poor prognostic impact in GBM patients in a study. We have therefore quantified the positivity for β-catenin, Gli1, as well as Ki-67, p53, and EGFR proteins on immunohistochemically-stained GBM sections from 106 patients in an investigation for potential predictive biomarkers. Correlation between these markers and survival was evaluated by pair-wise Pearson correlation coefficient and by bi-dimensional hierarchical clustering, followed by survival estimations using linear regression models and classification trees. We demonstrated that both β-catenin and, for the first time, Gli1 proteins are highly predictive markers of short survival, being found in 75 and 90% of the highly predictive trees, respectively, whereas Ki-67, p53 and EGFR were under 30% and thus, not considered as predictive. Our results indicate a role of β-catenin and Gli1 in GBM malignant behaviour, and suggest that inhibiting members of Wnt and Hedgehog pathways could be a valuable therapeutic strategy for GBM patients.

Tumor immunologic microenvironment is strongly involved in tumor progression and the presence of tumor infiltrating lymphocytes (TIL) with different phenotypes has been demonstrated to be of prognostic relevance in different malignancies. We investigated whether TIL infiltration of tumor tissues could also predict the outcome of prostate cancer patients. To this end, we carried out a retrospective analysis correlating the outcome of locally advanced prostate cancer patients undergone salvage radiotherapy upon relapse after radical surgery with the infiltration by different TIL populations. Twenty-two patients with resectable prostate cancer, with a mean age of 67 (C/¡3.93) years, who received salvage radiotherapy with a mean of 69.66 (C/¡ 3.178) Gy in 8 weeks, between June 1999 and January 2009 and with a median follow up of 123 (C/¡ 55.82) months, were enrolled in this study. We evaluated, by immunohistochemistry, the intratumoral ( t ) and peripheral stroma ( p ) infiltration by CD45, CD3, CD4, CD8, CCR7, FoxP3 or PD-1-positive cells on tumor samples taken at the diagnosis ( d ) and relapse times ( R ). We correlated these variables with patients' biochemical progression free survival (bPFS), post-radiotherapy progression free survival (PFS), and overall survival (OS). Substantial changes in the rate of TIL subsets were found between the first and the second biopsy with progressive increase in CD4, CCR7, FoxP3, PD-1 C cells. Our analysis revealed that higher CD8 p,RC and lower PD-1 RC TIL scores correlated to a longer bPFS. Higher CD8 p,RC and CCR7 t,RC TIL scores and lower CD45 p,RC and FoxP3 p,RC TIL scores correlated to a prolonged PFS and OS. These results suggest that the immunological microenvironment of primary tumor is strictly correlated with patient outcome and provide the rationale for immunological treatment of prostate cancer.

No abstract

Xerostomia represents an important cause of morbidity for head and neck cancer survivors after radiation therapy, and in certain cases normal dose constraints cannot be satisfied. Our results seem promising as texture analysis could enhance the normal dose constraints for the prediction of xerostomia.

No abstract