161 research outputs found
Latent relationships between environmental impacts of cultivation practices and land market: Evidences from a spatial quantile regression analysis in Italy
Several economic approaches can be carried out for managing the environmental impacts in agriculture, i.e. property and bargaining rights, economic incentives, ecological fees, etc. These approaches can be mainly applied to the cultivation phase or to the markets of the agricultural commodities. However, a further ambit in which the regulatory systems could be useful to trigger sustainable cultivation practices is the farmland market. Hence, this study contributes to the setting of market mechanisms based on incentives or fees related to the environmental impacts of farming practices for reducing the pressures of the production processes on the environmental components. The study, through a hedonic pricing method based on a spatial quantile regression and integrated by an environmental analysis, highlights different trends of land value determinants along the quantiles of the selling prices as the intensity of the cultivation system varies. The results show that the most important value determinants of the vineyards cultivated through the semi-extensive production system are related to the quality of grapes. Conversely, in presence of the intensive production system, the most important value determinants are related to the high yields, which also generate high greenhouse gas emissions, in contrast with the âpolluter paysâ principle. The results allow the assessment of the implicit marginal prices concerning the impact of the environmental indicator on land value per cultivation system, so as to favour the setting of regulatory monetary strategies able to foster farmers towards cleaner agricultural practices
Nodular histiocytic/mesothelial hyperplasia as consequence of chronic mesothelium irritation by sub-phrenic abscess.
Nodular histiocytic/mesothelial hyperplasia (NHMH) is a benign localized alteration, first
described in 1975 by Rosai in the hernia sac [1]. Few pulmonary cases have been reported in literature
[2â6]. Sometimes it has been reported in the pericardium [7,8] or presenting as an inguinal
mass [9]. The âmesothelial/monocytic incidental cardiac excrescenceâ, first described by Weinot et al.
in 1994 [10] is now considered a similar lesion to NHMH [11].
It consists of a reactive proliferation of histiocytes and mesothelium secondary to chronic irritation
and it has been observed in pleura-damaging processes, such as pneumothorax [5], or as consequence
of cardiac catheterization, inflammation, mechanical or tumor stimulation [11].
The rarity of NHMH and the moderate cytological atypia often present, make this lesion difficult
to diagnose. It can be easily confused with primary mesothelial lesions and neoplasms such
as adenocarcinomas, granulosa cell tumors or Langerhansâ histiocytosis.
We report a case of pleural NHMH in a patient with a subphrenic abscess, in which no pulmonary
pathogenic noxa was evident. We hypothesize a transdiaphragmatic chronic irritation as a
pathogenetic mechanism underlying NHMH
Data Processing of Lunar Infrared Measurements at High Spatial and Radiometric Resolution to Obtain Brightness Temperatures Scientific Report No. 9
Data processing of lunar infrared measurements at high spatial and radiometric resolution to obtain brightness temperature
Analysis of tissue and circulating microRNA expression during metaplastic transformation of the esophagus
none16noGenetic changes involved in the metaplastic progression from squamous esophageal mucosa toward Barrett's metaplasia and adenocarcinoma are almost unknown. Several evidences suggest that some miRNAs are differentially expressed in Barrett's esophagus (BE) and esophageal adenocarcinoma. Among these, miR-143, miR-145, miR-194, miR-203, miR-205, miR-215 appear to have a key role in metaplasia and neoplastic progression. The aim of this study was to analyze deregulated miRNAs in serum and esophageal mucosal tissue biopsies to identify new biomarkers that could be associated with different stages of esophageal disease. Esophageal mucosal tissue biopsies and blood samples were collected and analyzed for BE diagnosis. Quantitative Real-time PCR was used to compare miRNA expression levels in serum and 60 disease/ normal-paired tissues from 30 patients diagnosed with esophagitis, columnar-lined oesophagus (CLO) or BE. MiRNA expression analysis showed that miR-143, miR-145, miR-194 and miR-215 levels were significantly higher, while miR-203 and miR-205 were lower in BE tissues compared with their corresponding normal tissues. Esophageal mucosa analysis of patients with CLO and esophagitis showed that these miRNAs were similarly deregulated but to a lesser extent keeping the same trend and CLO appeared as intermediate step between esophagitis and BE. Analysis on circulating miRNA levels confirmed that miR-194 and miR-215 were significantly upregulated in both BE and CLO compared to esophagitis, while miR-143 was significantly upregulated only in the Barrett group. These findings suggest that miRNAs may be involved in neoplastic/ metaplastic progression and miRNA analysis might be useful for progression risk prediction as well as for monitoring of BE/CLO patients.openCabibi D.; Caruso S.; Bazan V.; Castiglia M.; Bronte G.; Ingrao S.; Fanale D.; Cangemi A.; Calo V.; Listi A.; Incorvaia L.; Galvano A.; Pantuso G.; Fiorentino E.; Castorina S.; Russo A.Cabibi, D.; Caruso, S.; Bazan, V.; Castiglia, M.; Bronte, G.; Ingrao, S.; Fanale, D.; Cangemi, A.; Calo, V.; Listi, A.; Incorvaia, L.; Galvano, A.; Pantuso, G.; Fiorentino, E.; Castorina, S.; Russo, A
Communications Biophysics
Contains research objectives and reports on six research projects
Human Bone Marrow Mesenchymal Stem Cells Display Anti-Cancer Activity in SCID Mice Bearing Disseminated Non-Hodgkin's Lymphoma Xenografts
Abstract
BACKGROUND:
Although multimodality treatment can induce high rate of remission in many subtypes of non-Hodgkin's lymphoma (NHL), significant proportions of patients relapse with incurable disease. The effect of human bone marrow (BM) mesenchymal stem cells (MSC) on tumor cell growth is controversial, and no specific information is available on the effect of BM-MSC on NHL.
METHODOLOGY/PRINCIPAL FINDINGS:
The effect of BM-MSC was analyzed in two in vivo models of disseminated non-Hodgkin's lymphomas with an indolent (EBV(-) Burkitt-type BJAB, median survival = 46 days) and an aggressive (EBV(+) B lymphoblastoid SKW6.4, median survival = 27 days) behavior in nude-SCID mice. Intra-peritoneal (i.p.) injection of MSC (4 days after i.p. injection of lymphoma cells) significantly increased the overall survival at an optimal MSC:lymphoma ratio of 1:10 in both xenograft models (BJAB+MSC, median survival = 58.5 days; SKW6.4+MSC, median survival = 40 days). Upon MSC injection, i.p. tumor masses developed more slowly and, at the histopathological observation, exhibited a massive stromal infiltration coupled to extensive intra-tumor necrosis. In in vitro experiments, we found that: i) MSC/lymphoma co-cultures modestly affected lymphoma cell survival and were characterized by increased release of pro-angiogenic cytokines with respect to the MSC, or lymphoma, cultures; ii) MSC induce the migration of endothelial cells in transwell assays, but promoted endothelial cell apoptosis in direct MSC/endothelial cell co-cultures.
CONCLUSIONS/SIGNIFICANCE:
Our data demonstrate that BM-MSC exhibit anti-lymphoma activity in two distinct xenograft SCID mouse models of disseminated NHL
Crop pests and predators exhibit inconsistent responses to surrounding landscape composition
The idea that noncrop habitat enhances pest control and represents a winâwin opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on pests are inconclusive. The observed heterogeneity in species responses to noncrop habitat may be biological in origin or could result from variation in how habitat and biocontrol are measured. Here, we use a pest-control database encompassing 132 studies and 6,759 sites worldwide to model natural enemy and pest abundances, predation rates, and crop damage as a function of landscape composition. Our results showed that although landscape composition explained significant variation within studies, pest and enemy abundances, predation rates, crop damage, and yields each exhibited different responses across studies, sometimes increasing and sometimes decreasing in landscapes with more noncrop habitat but overall showing no consistent trend. Thus, models that used landscape-composition variables to predict pest-control dynamics demonstrated little potential to explain variation across studies, though prediction did improve when comparing studies with similar crop and landscape features. Overall, our work shows that surrounding noncrop habitat does not consistently improve pest management, meaning habitat conservation may bolster production in some systems and depress yields in others. Future efforts to develop tools that inform farmers when habitat conservation truly represents a winâwin would benefit from increased understanding of how landscape effects are modulated by local farm management and the biology of pests and their enemies
Crop pests and predators exhibit inconsistent responses to surrounding landscape composition
The idea that noncrop habitat enhances pest control and represents a winâwin opportunity to conserve biodiversity and bolster yields has emerged as an agroecological paradigm. However, while noncrop habitat in landscapes surrounding farms sometimes benefits pest predators, natural enemy responses remain heterogeneous across studies and effects on pests are inconclusive. The observed heterogeneity in species responses to noncrop habitat may be biological in origin or could result from variation in how habitat and biocontrol are measured. Here, we use a pest-control database encompassing 132 studies and 6,759 sites worldwide to model natural enemy and pest abundances, predation rates, and crop damage as a function of landscape composition. Our results showed that although landscape composition explained significant variation within studies, pest and enemy abundances, predation rates, crop damage, and yields each exhibited different responses across studies, sometimes increasing and sometimes decreasing in landscapes with more noncrop habitat but overall showing no consistent trend. Thus, models that used landscape-composition variables to predict pest-control dynamics demonstrated little potential to explain variation across studies, though prediction did improve when comparing studies with similar crop and landscape features. Overall, our work shows that surrounding noncrop habitat does not consistently improve pest management, meaning habitat conservation may bolster production in some systems and depress yields in others. Future efforts to develop tools that inform farmers when habitat conservation truly represents a winâwin would benefit from increased understanding of how landscape effects are modulated by local farm management and the biology of pests and their enemies
- âŠ