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Integrated global assessment of the natural forest carbon potential. Nature 2023; 624:92-101. [PMID: 37957399 PMCID: PMC10700142 DOI: 10.1038/s41586-023-06723-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2022] [Accepted: 10/06/2023] [Indexed: 11/15/2023]
Abstract
Forests are a substantial terrestrial carbon sink, but anthropogenic changes in land use and climate have considerably reduced the scale of this system1. Remote-sensing estimates to quantify carbon losses from global forests2-5 are characterized by considerable uncertainty and we lack a comprehensive ground-sourced evaluation to benchmark these estimates. Here we combine several ground-sourced6 and satellite-derived approaches2,7,8 to evaluate the scale of the global forest carbon potential outside agricultural and urban lands. Despite regional variation, the predictions demonstrated remarkable consistency at a global scale, with only a 12% difference between the ground-sourced and satellite-derived estimates. At present, global forest carbon storage is markedly under the natural potential, with a total deficit of 226 Gt (model range = 151-363 Gt) in areas with low human footprint. Most (61%, 139 Gt C) of this potential is in areas with existing forests, in which ecosystem protection can allow forests to recover to maturity. The remaining 39% (87 Gt C) of potential lies in regions in which forests have been removed or fragmented. Although forests cannot be a substitute for emissions reductions, our results support the idea2,3,9 that the conservation, restoration and sustainable management of diverse forests offer valuable contributions to meeting global climate and biodiversity targets.
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2
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The global biogeography of tree leaf form and habit. NATURE PLANTS 2023; 9:1795-1809. [PMID: 37872262 PMCID: PMC10654052 DOI: 10.1038/s41477-023-01543-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Accepted: 09/18/2023] [Indexed: 10/25/2023]
Abstract
Understanding what controls global leaf type variation in trees is crucial for comprehending their role in terrestrial ecosystems, including carbon, water and nutrient dynamics. Yet our understanding of the factors influencing forest leaf types remains incomplete, leaving us uncertain about the global proportions of needle-leaved, broadleaved, evergreen and deciduous trees. To address these gaps, we conducted a global, ground-sourced assessment of forest leaf-type variation by integrating forest inventory data with comprehensive leaf form (broadleaf vs needle-leaf) and habit (evergreen vs deciduous) records. We found that global variation in leaf habit is primarily driven by isothermality and soil characteristics, while leaf form is predominantly driven by temperature. Given these relationships, we estimate that 38% of global tree individuals are needle-leaved evergreen, 29% are broadleaved evergreen, 27% are broadleaved deciduous and 5% are needle-leaved deciduous. The aboveground biomass distribution among these tree types is approximately 21% (126.4 Gt), 54% (335.7 Gt), 22% (136.2 Gt) and 3% (18.7 Gt), respectively. We further project that, depending on future emissions pathways, 17-34% of forested areas will experience climate conditions by the end of the century that currently support a different forest type, highlighting the intensification of climatic stress on existing forests. By quantifying the distribution of tree leaf types and their corresponding biomass, and identifying regions where climate change will exert greatest pressure on current leaf types, our results can help improve predictions of future terrestrial ecosystem functioning and carbon cycling.
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Author Correction: Native diversity buffers against severity of non-native tree invasions. Nature 2023; 622:E2. [PMID: 37752352 PMCID: PMC10567547 DOI: 10.1038/s41586-023-06654-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
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4
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Native diversity buffers against severity of non-native tree invasions. Nature 2023; 621:773-781. [PMID: 37612513 PMCID: PMC10533391 DOI: 10.1038/s41586-023-06440-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 07/14/2023] [Indexed: 08/25/2023]
Abstract
Determining the drivers of non-native plant invasions is critical for managing native ecosystems and limiting the spread of invasive species1,2. Tree invasions in particular have been relatively overlooked, even though they have the potential to transform ecosystems and economies3,4. Here, leveraging global tree databases5-7, we explore how the phylogenetic and functional diversity of native tree communities, human pressure and the environment influence the establishment of non-native tree species and the subsequent invasion severity. We find that anthropogenic factors are key to predicting whether a location is invaded, but that invasion severity is underpinned by native diversity, with higher diversity predicting lower invasion severity. Temperature and precipitation emerge as strong predictors of invasion strategy, with non-native species invading successfully when they are similar to the native community in cold or dry extremes. Yet, despite the influence of these ecological forces in determining invasion strategy, we find evidence that these patterns can be obscured by human activity, with lower ecological signal in areas with higher proximity to shipping ports. Our global perspective of non-native tree invasion highlights that human drivers influence non-native tree presence, and that native phylogenetic and functional diversity have a critical role in the establishment and spread of subsequent invasions.
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5
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57P V-set and immunoglobulin domain containing 1 (VSIG1): Gene vs protein expression in colorectal cancer tissue samples. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.10.089] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2022] Open
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6
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59P Prognostic impact of HPV status evaluation in head and neck squamous cell carcinomas. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.09.060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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7
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New forest biomass carbon stock estimates in Northeast Asia based on multisource data. GLOBAL CHANGE BIOLOGY 2020; 26:7045-7066. [PMID: 33006422 DOI: 10.1111/gcb.15376] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 09/02/2020] [Accepted: 09/24/2020] [Indexed: 06/11/2023]
Abstract
Forests play an important role in both regional and global C cycles. However, the spatial patterns of biomass C density and underlying factors in Northeast Asia remain unclear. Here, we characterized spatial patterns and important drivers of biomass C density for Northeast Asia, based on multisource data from in situ forest inventories, as well as remote sensing, bioclimatic, topographic, and human footprint data. We derived, for the first time, high-resolution (1 km × 1 km) maps of the current and future forest biomass C density for this region. Based on these maps, we estimated that current biomass C stock in northeastern China, the Democratic People's Republic of Korea, and Republic of Korea to be 2.53, 0.40, and 0.35 Pg C, respectively. Biomass C stock in Northeast Asia has increased by 20%-46% over the past 20 years, of which 40%-76% was contributed by planted forests. We estimated the biomass C stock in 2080 to be 6.13 and 6.50 Pg C under RCP4.5 and RCP8.5 scenarios, respectively, which exceeded the present region-wide C stock value by 2.85-3.22 Pg C, and were 8%-14% higher than the baseline C stock value (5.70 Pg C). The spatial patterns of biomass C densities were found to vary greatly across the Northeast Asia, and largely decided by mean diameter at breast height, dominant height, elevation, and human footprint. Our results suggest that reforestation and forest conservation in Northeast Asia have effectively expanded the size of the carbon sink in the region, and sustainable forest management practices such as precision forestry and close forest monitoring for fire and insect outbreaks would be important to maintain and improve this critical carbon sink for Northeast Asia.
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Retromuscular mesh and hernial sac technique in the reconstruction of 139 cases of large median incisional hernias: one institution's experience. Hernia 2020; 24:99-105. [PMID: 30806887 DOI: 10.1007/s10029-019-01915-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2018] [Accepted: 02/19/2019] [Indexed: 02/05/2023]
Abstract
PURPOSE Incisional hernia is the most common complication of laparotomy. Postoperative parietal defects tend to relapse, even after the most optimal surgical methods. The aim of this study was to present the effectiveness of an adapted retromuscular technique with prolene mesh and a hernial sac, in patients with large incisional median hernias. The reported results were obtained by our team after more than 15 years of experience. METHODS This retrospective study included 139 consecutive cases of large median incisional hernias operated on using a retromuscular mesh and hernial sac technique. The cross-sectional diameter of incisional hernias was larger than 10 cm, being classified in the W3 group, according to the European Hernia Society classification. RESULTS The study included 83 females (59.71%) and 56 males (40.29%) with a median age of 62.4 ± 16.6 years and an average body mass index of 32.4 ± 7.6 kg. The hernia was supraumbilically located in 54 cases, subumbilically in 61 cases, and supra- and subumbilically in 24 cases. Postoperative complications were recorded in eight cases (5.75%): one case with a hematoma in the right abdominal muscle sheath; five cases with supra-aponeurotic seromas; two cases with skin necrosis and one with a mesh infection. Recurrence occurred in seven cases (5.03%): four cases in the first 2 years postoperatively and three cases in the third year after surgery. CONCLUSIONS The retromuscular technique with prolene mesh and a hernial sac is an effective method of restoring the integrity of the abdominal wall in large median incisional hernias with low rates of morbidity and recurrence.
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The importance of p53 signaling pathway in the evolution of gastric cancer. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz413.039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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10
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Epithelial-mesenchymal transition of tumour buds: A histopathological parameter with potential implication in oncological therapy of colorectal carcinoma. Ann Oncol 2019. [DOI: 10.1093/annonc/mdz413.092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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11
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Vascular territory (anterior vs posterior circulation) can influence outcome after thrombolysis? J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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12
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Post-stroke dizziness: Natural course and prognostic factor. J Neurol Sci 2019. [DOI: 10.1016/j.jns.2019.10.1286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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P14.42 Diagnostic challenges of infratentorial hemangioblastomas: improvement of current radiological classification scheme. Neuro Oncol 2019. [DOI: 10.1093/neuonc/noz126.277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Abstract
BACKGROUND
Hemangioblastomas (HBMs) are known to exhibit very typical radiological features and thus classified by well-established radiological classification scheme. However, after we have experienced unusual cases in which current radiological classification system was not enough to categorize them, we reviewed our series of infratentorial HBMs in order not only to evaluate the relevance of current classification scheme, but also to possibly improve it. Also, we added descriptions on several cases with unusual radiological magnetic resonance imaging (MRI) findings in which differential diagnosis was challenging.
MATERIAL AND METHODS
We retrospectively reviewed preoperative MRI of 118 patients with pathologically diagnosed infratentorial HBMs at our institution between 2002 and 2015. Total 128 tumors were included to this study and classified into four categories based on the presence and nature of cystic components: extratumoral cystic (Type Ce, classical cystic with a mural nodule), intratumoral cystic (Type Ci), mixed cystic (Type Cm), and solid (Type S). The association with von Hippel-Lindau (VHL) disease was also investigated.
RESULTS
In 118 patients (65 male and 53 female), 79 (66.9%) had solitary HBMs and 39 (33.1%) were diagnosed with VHL disease. Type Ce with typical radiological findings was the most prevalent type of HBM (63.3%), followed by Type S (21.1%). HBMs with intratumoral cysts were uncommon (Type Ci, 11.7%) and mixed extratumoral and intratumoral cysts (Type Cm) accounted for only 3.9%. No intergroup differences were observed in the proportions of each subtype between the solitary and VHL disease-associated HBMs.
CONCLUSION
Radiological features of HBMs are usually typical thus preoperative presumption is not difficult in majority of cases. Improved radiological classification scheme is more practical because it does not only help surgeons determine whether the cystic wall should be removed or not, but also covers cases with atypical radiological presentations. For solid and extraparenchymal HBMs, differential diagnosis is more difficult as well as very critical as surgical removal is often very challenging.
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Low revision rate and excellent subjective outcome of primary ACL repair with a minimum follow-up of 5 years. Muscles Ligaments Tendons J 2019. [DOI: 10.32098/mltj.02.2018.07] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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1417 A soft, flexible, battery-less, and wearable pressure sensor with wireless communication for therapeutic compression garments: Bench validation and preliminary in vivo testing. J Invest Dermatol 2018. [DOI: 10.1016/j.jid.2018.03.1435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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Abstract P2-04-25: Breast cancer patients after kidney and liver transplantation: A Report from Asan medical center. Cancer Res 2017. [DOI: 10.1158/1538-7445.sabcs16-p2-04-25] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
This abstract was not presented at the symposium.
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Genome-wide expression analysis of a rice mutant line under salt stress. GENETICS AND MOLECULAR RESEARCH 2016; 15:gmr-15-gmr15048833. [PMID: 27813582 DOI: 10.4238/gmr15048833] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Salinity is a major environmental stress to plants. In this study, the ability of plants to tolerate salt was investigated by studying growth, physiological characteristics, and expression levels of genes related to the salt-stress response in the salt-tolerant rice mutant (Till-II-877), which was derived from γ-ray irradiation. Compared to plants grown under normal conditions, the height and root length of wild type (WT) were reduced by approximately 40 and 29% following exposure to salt stress for 3 weeks, whereas Till-II-877 line showed 29 and 23% reductions in plant height and root length, respectively. No significant changes were observed in total chlorophyll content, and the malondialdehyde content of the mutant increased less than that of the WT under salt treatment. Gene expression was compared between the WT and mutant lines using microarray analysis. An unbiased analysis of the gene expression datasets allowed us to identify the pathways involved in salt-stress responses. Among the most significantly affected pathways, changes in gene expression were observed in α-linolenic acid and linoleic acid metabolism (in lipid metabolism), fructose and mannose metabolism and glycolysis-gluconeogenesis (in carbohydrate metabolism), cysteine and methionine metabolism (in amino acid metabolism), and carbon fixation (in the energy metabolism of photosynthetic organisms) under salt stress. These results show that the differential response of plants subjected to salt stress was due to changes in multiple metabolic pathways. These findings increase our understanding of the effects of salt stress in rice and may aid in the development of salt-tolerant rice cultivars.
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625. Intraoperative sentinel lymph node mapping with methylene blue dye in gastric cancer. Eur J Surg Oncol 2016. [DOI: 10.1016/j.ejso.2016.06.345] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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20
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199P Proposal of modification of UICC/AJCC staging system of gastric cancer including specific parameters for early gastric cancer. Ann Oncol 2015. [DOI: 10.1093/annonc/mdv523.60] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Comparison of Cancer Yields and Diagnostic Performance of Screening Mammography vs. Supplemental Screening Ultrasound in 4394 Women with Average Risk for Breast Cancer. ULTRASCHALL IN DER MEDIZIN (STUTTGART, GERMANY : 1980) 2015; 36:255-263. [PMID: 24764212 DOI: 10.1055/s-0034-1366288] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
PURPOSE The effectiveness of supplemental screening ultrasound (US) was investigated in women ≥ 40 years at average risk for breast cancer regardless of breast parenchymal density. A total of 4394 women at average risk and having previously undergone screening mammography were classified as the mammography group. MATERIALS AND METHODS Of 4394 women, 2005 underwent screening US after a final assessment of category 1 or 2 on screening mammography, and were categorized as the US group. Category 0, 4, and 5 on mammography and 3, 4, and 5 on US were defined as positive. The cancer yields per 1000 women and diagnostic performance of two groups were compared. RESULTS The total cancer and invasive cancer yields for the mammography group were 3.0 (95 % confidence interval 1.6, 5.1) and 2.0 (95 % CI, 0.9, 3.9) per 1000 women, higher than the US values of 2.0 (0.5, 5.1) and 1.0 (0.1, 3.6), not statistically significant. The specificity, accuracy, and positive predictive value (PPV) for mammography were 88.90 % (87.93, 89.81), 88.85 % (87.88, 89.76), and 2.61 % (1.39, 4.41), significantly higher than the US values of 69.07 % (66.99, 71.09), 69.13 % (67.05, 71.15), and 0.64 % (0.18, 1.64). The short-term follow-up rate of mammography was 5.51 % (4.85, 6.22), significantly lower than the rate of 26.58 (24.66, 28.58) for US. CONCLUSION Supplemental screening US in mammographically negative breasts can find additional carcinomas in women at average risk but is not as effective as screening mammography because of the lower cancer yield, invasive cancer yield, specificity, accuracy, PPV and a high short-term follow-up rate.
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Beraprost Sodium (Prostaglandin I2 analogue) Delays Deterioration of allograft Dysfunction in Kidney Transplant Recipient Treated With Calcineurin Inhibitors. Transplantation 2014. [DOI: 10.1097/00007890-201407151-01587] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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23
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Lethal gastric hemorrhage from a caliber-persistent artery of the antrum - a branch of the right gastric artery. Hippokratia 2014; 18:172-176. [PMID: 25336884 PMCID: PMC4201407] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
AIM To present a rarely diagnosed case of gastric Dieulafoy lesion. DESCRIPTION OF CASE A 62-year-old male was hospitalized with hematemesis. Laparoscopic ligature of two gastric ulcers located in the antrum was performed but the upper gastrointestinal bleeding was not stopped. The patient was transferred to another surgical clinic and he underwent an emergency abdominal laparotomy with re-suture of gastric ulcers. Considering his general condition and another recurrent bleeding, he was transferred to our hospital and a total gastrectomy of necessity was performed. The patient died four days after surgery because of sepsis. At autopsy, we identified diffuse peritonitis, hypertrophic cardiomyopathy and chronic pancreatitis with expanded fibrotic areas. Histological examination of the surgical specimen showed oversized tortuous vessels in the gastric submucosal layer with expansion into mucosa. Some of the vessels presented acute and/or organized thrombi with recanalization, in the others, lipid-rich atherosclerotic plaques were observed. Based on these criteria, the 'caliber-persistent artery', also known as 'Dieulafoy's lesion', was diagnosed. CONCLUSION Dieulafoy's lesion should be suspected in every case of gastrointestinal bleeding in both adults and children.
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Molecular classification of colorectal cancer: a dream that can become a reality. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY 2013; 7:267-76. [PMID: 23771065 DOI: 10.1159/000350687] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/11/2013] [Indexed: 12/14/2022]
Abstract
Despite thousands of studies about colorectal cancer (CRC) as much as extensively usage of prognostic antibodies÷genes and clinical trials that include the newest targeted drugs, this tumor still remains in the top of both incidence and cancer-related mortality. In this review, we intended to correlate our experience in field of colorectal cancer with the literature data and to present our vision about the prognostic and predictive role of some of the most used molecular and immunohistochemical examinations in the field. The prognostic and predictive values of parameters such as microsatellite instability, angiogenesis, Maspin gene/protein, K-ras and BRAF mutations are discussed in relationship to the classical antibodies such as Keratin 7/20, p53 or HER2. At the end, we correlated these informations and tried to realize a molecular classification of colorectal cancer, similar to breast carcinomas, in order to establish targeted groups of patients for targeted therapy.
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Poster Session Saturday 14 December - AM: 14/12/2013, 08:30-12:30 * Location: Poster area. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet207] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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26
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Pattern of abnormalities of quantitative sudomotor axon reflex test in complex regional pain syndrome. J Neurol Sci 2013. [DOI: 10.1016/j.jns.2013.07.1872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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Momente ohne Atemnot - Tagesstrukturierende Aktivitäten mit Unterstützung von Ergo- und Physiotherapie und Pflege im Alltag einer Akutklinik. Zeit für die Patienten, ihre Erkrankung und Atemnot loszulassen. Pneumologie 2013. [DOI: 10.1055/s-0033-1334660] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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28
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Gastric tricho-wool bezoar in an 18-year-old girl. S AFR J SURG 2013; 51:33-4. [PMID: 23472651 DOI: 10.7196/sajs.1205] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2011] [Accepted: 11/06/2011] [Indexed: 02/08/2023]
Abstract
An 18-year-old girl with no psychiatric history presented with abdominal pain. Four months previously she had given birth to a healthy baby. On palpation, a painful abdominal mass was identified in the epigastric region, and gastrotomy was performed. A J-shaped hair-wool ball and two large pieces of sheep's wool were removed. No history of trichotillomania was reported.
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Search for photon-linelike signatures from dark matter annihilations with H.E.S.S. PHYSICAL REVIEW LETTERS 2013; 110:041301. [PMID: 25166149 DOI: 10.1103/physrevlett.110.041301] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Indexed: 06/03/2023]
Abstract
Gamma-ray line signatures can be expected in the very-high-energy (E(γ)>100 GeV) domain due to self-annihilation or decay of dark matter (DM) particles in space. Such a signal would be readily distinguishable from astrophysical γ-ray sources that in most cases produce continuous spectra that span over several orders of magnitude in energy. Using data collected with the H.E.S.S. γ-ray instrument, upper limits on linelike emission are obtained in the energy range between ∼ 500 GeV and ∼ 25 TeV for the central part of the Milky Way halo and for extragalactic observations, complementing recent limits obtained with the Fermi-LAT instrument at lower energies. No statistically significant signal could be found. For monochromatic γ-ray line emission, flux limits of (2 × 10(-7) -2 × 10(-5)) m(-2) s(-1) sr(-1) and (1 × 10(-8) -2 × 10(-6)) m(-2) s(-1)sr(-1) are obtained for the central part of the Milky Way halo and extragalactic observations, respectively. For a DM particle mass of 1 TeV, limits on the velocity-averaged DM annihilation cross section ⟨σv⟩(χχ → γγ) reach ∼ 10(-27) cm(3)s(-1), based on the Einasto parametrization of the Galactic DM halo density profile.
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Abstract
Maspin is a serine protease which belongs to the serpin family and seems to play an important role in inhibiting angiogenesis and tumor proliferation. The significance of its expression in colorectal cancer (CRC) has not been elucidated so far. In our study, we tried to identify, based on Maspin expression, four groups of CRC, with possible prognostic impact. In 121 CRC, we analyzed the Maspin expression in correlation with the clinico-pathological features, microsatellite status and other markers such as p53, bax, bcl-2, VEGF (Vascular Endothelial Growth Factor) and CD31. Based on the percentage and intensity of Maspin expression in the tumor cells, the cases were grouped in four classes: negative, with cytoplasmic predominance, nuclear predominated, and cases with mixed (cytoplasmic-nuclear) expression. 9% of the cases were negative, 44% presented cytoplasmic predominance, the nuclear predominance was revealed in 24% of the cases, and the other 23% of CRC having a mixed Maspin positivity. The cytoplasmic predominance was correlated with a better prognosis, p53 negativity, bax positivity, and lack of tumor budding. Forty percent of microsatellite instable (MSI) cases presented mixed expression, this pattern being also related to a lower angiogenesis. Nuclear predominance was associated with p53 positivity, the lowest survival rate and intense VEGF expression. In conclusion, CRC with cytoplasmic predominance and mixed Maspin expression seems to present better prognosis whereas nuclear predominance is connected with high aggressivity.
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EPIDEMIOLOGY. Neuro Oncol 2012. [DOI: 10.1093/neuonc/nos100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Mena, a new available marker in tumors of salivary glands? Eur J Histochem 2012; 56:e8. [PMID: 22472896 PMCID: PMC3352137 DOI: 10.4081/ejh.2012.e8] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2011] [Revised: 01/30/2012] [Accepted: 01/13/2012] [Indexed: 02/08/2023] Open
Abstract
Mena (mammalian Ena) is an actin regulatory protein involved in cell motility and adhesion. Based on its potential role in malignant transformation revealed in other organs, we analyzed the Mena expression in normal salivary glands (SG) and salivary tumors. Mena expression was determined in normal SG (n=10) and also benign (n=20) and malignant (n=35) lesions of SG. For the immunohistochemical staining we used the anti-Mena antibody. All normal SG and the benign lesions (10 pleomorphic adenomas, 10 Warthin's tumors) were Mena negative. Salivary duct carcinomas (n=5), carcinomas in pleomorphic adenoma (n=5), acinic cell carcinomas (n=5), squamous cell carcinomas (n=10) and high-grade mucoepidermoid carcinomas (n=2) were positive. The lymphomas (n=5) and low-grade mucoepidermoid carcinomas (n=1) were Mena negative. In one case the lymphoblastic cells stained positive for Mena. Some of the endothelial cells, in the peritumoral vessels, were Mena positive. To the best of our knowledge, this is the first study in the literature about Mena expression in salivary tumors. Our study suggests that Mena protein seems to play a role in malignant transformation and its intensity is correlated with the type and grade of tumor and also with vascular invasion. Its positivity in endothelial cells may suggest its potential role in tumor angiogenesis.
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VEGF and CD31 expression in arthritic synovium and cartilage of human knee joints. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY = REVUE ROUMAINE DE MORPHOLOGIE ET EMBRYOLOGIE 2012; 53:911-5. [PMID: 23303013 DOI: pmid/23303013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
PURPOSE To determine the histological differences and the particular aspects of local angiogenesis in knee joint of the patients with osteoarthritis (OA) and rheumatoid arthritis (RA). MATERIALS AND METHODS In 10 cases with RA and five OA, immunohistochemical stains were performed with CD31 and VEGF-A (Vascular Endothelial Growth Factor). All surgical samples provided from total knee joint arthroplasty. Angiogenesis was quantified in both synovial membrane and cartilage. RESULTS In patients with OA, villous proliferation of the synovial membrane was more prominent that in RA. In the last, invasion of the cartilage by the proliferated synovial tissue was more characteristic. The neovascularization was more intense in RA than in OA, in both synovium and degenerated cartilage. In RA, the vessels were immature in the superficial areas and became larger in the deep synovium. The local angiogenesis was characterized by sprouting and splitting (intussusceptions) mechanisms. In OA, the mature vessels predominated in the subintimal zones. Sprouting or non-sprouting mechanisms of local angiogenesis, which can indicate vascular formation from the resident mature vessels, were not identified in OA. CONCLUSIONS Angiogenesis seems to have particular behavior in RA and OA. In RA, local active angiogenesis seems to predominate but in OA up taking of the circulating precursors may be more intensely involved. Intra-articular inhibition of local angiogenesis could have therapeutically impact in RA but not in OA. Finally, we can conclude that there probably are many different pathways leading to the same joint damage having certain therapeutic consequences.
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Microvascular density in non-Hodgkin B-cell lymphomas measured using digital morphometry. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY = REVUE ROUMAINE DE MORPHOLOGIE ET EMBRYOLOGIE 2012; 53:67-71. [PMID: 22395502 DOI: pmid/22395502] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
INTRODUCTION The growth of solid tumors requires the development of microvessels, therefore tumor expansion depends on angiogenesis. Microvessels provide nutrients and oxygen and remove catabolytic substances, while endothelial cells produce growth factors for tumor cells in a paracrine fashion. The microvascular component of a tumor also plays a role in the metastatic capacity of the tumor, enabling the tumor cells to spread to distant locations by providing a large endothelial surface. AIM The purpose of this study was to review the literature about angiogenesis regarding malignant lymphomas and to perform basic measurements by means of digital morphometric methods in large B-cell lymphomas and follicular lymphomas. MATERIALS AND METHODS After thorough analyzing currently available assessment methods, we performed angiogenesis assessment on 19 randomly selected cases, from paraffin-embedded specimens using digital morphometry. We used immunohistochemistry and the CD34 antigen to mark microvessels. We measured average vascular diameter and a previously successfully applied digital morphometric method to quantify the extent of endothelial area. RESULTS According to literature data, our knowledge and understanding of angiogenesis grew rapidly from early studies such as Folkman's classic paper. Many studies showed that angiogenesis plays a key role in the biology of tumors and therefore the study of angiogenesis might open new therapeutic possibilities. There have been many studies of angiogenesis in malignant lymphomas, however not as many articles as in other tumor types. Our morphometric studies showed there are statistically significant differences between diffuse large cell lymphoma (DLBCL) and follicular lymphoma (FL) regarding average vascular diameter and that high grade lymphomas tend to have a greater CD34+ endothelial area.
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Synchronous intestinal tumors: aggressive jejunal carcinoid and sigmoid malignant polyp. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY = REVUE ROUMAINE DE MORPHOLOGIE ET EMBRYOLOGIE 2012; 53:193-6. [PMID: 22395522 DOI: pmid/22395522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Association of aggressive jejunal carcinoid tumors and other primary gastrointestinal neoplasms are rarely observed. We describe the case of a synchronous jejunal carcinoid tumor and two colorectal polyps in a 78-year old woman. Surgical intervention was performed for the colorectal tumors and the carcinoid was incidentally found. It was well differentiated but was accompanied by lymph node metastasis and peritoneal carcinomatosis. In this case, the prognosis was not depending by the colorectal tumors but the aggressive feature of jejunal carcinoid lead to patient's death.
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Search for a dark matter annihilation signal from the galactic center halo with H.E.S.S. PHYSICAL REVIEW LETTERS 2011; 106:161301. [PMID: 21599352 DOI: 10.1103/physrevlett.106.161301] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2010] [Revised: 01/12/2011] [Indexed: 05/30/2023]
Abstract
A search for a very-high-energy (VHE; ≥100 GeV) γ-ray signal from self-annihilating particle dark matter (DM) is performed towards a region of projected distance r∼45-150 pc from the Galactic center. The background-subtracted γ-ray spectrum measured with the High Energy Stereoscopic System (H.E.S.S.) γ-ray instrument in the energy range between 300 GeV and 30 TeV shows no hint of a residual γ-ray flux. Assuming conventional Navarro-Frenk-White and Einasto density profiles, limits are derived on the velocity-weighted annihilation cross section (σv) as a function of the DM particle mass. These are among the best reported so far for this energy range and in particular differ only little between the chosen density profile parametrizations. In particular, for the DM particle mass of ∼1 TeV, values for (σv) above 3×10(-25) cm(3) s(-1) are excluded for the Einasto density profile.
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Ergo- und Physiotherapie mittels interaktiver Videospiele zur Verbesserung der Trainingsmotivation bei langzeitbeatmeten Patienten. Pneumologie 2011. [DOI: 10.1055/s-0031-1272334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Muskuläres Training mittels interaktiver Videospiele in der Therapie von Langzeitbeatmeten Patienten und Patienten bei der Respiratorentwöhnung (Weaning). Pneumologie 2011. [DOI: 10.1055/s-0031-1272277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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Molecular pathways and pathomorphology of colorectal cancers. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY = REVUE ROUMAINE DE MORPHOLOGIE ET EMBRYOLOGIE 2011; 52:767-73. [PMID: 21892517 DOI: pmid/21892517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Colorectal carcinomas (CRCs) evolve through multiple pathways. These pathways may be defined based on two molecular features: (1) chromosomal instability and (2) chromosomal stability. Tumors showing chromosomal stability evolve through the so-called microsatellite instability pathway. These types of tumors show different clinico-pathological features and need different therapy so very important to separate them. As Hematoxylin-Eosin (HE) based histology is influenced by the different genetic alterations of a tumor, it is reasonable that different gene expression profiles result in different HE morphology. Our aim was to find specific histomorphological features specific for colorectal tumors showing different molecular features. We analyzed the clinicopathological parameters of 324 colorectal carcinomas, 26 hereditary non-polyposis colorectal cancers, 32 sporadic high-level microsatellite-instable (MSI-H) cancers and 266 microsatellite-stable or low-level microsatellite-instable (MSI-L) cancers among them. Our results showed that we could recognize different genetic types of tumors on the base of clinicopathological features like patient's age, tumor localization and histological characteristics of CRCs. Main histological parameters help in differentiation are inflammatory background, nuclear features and pattern of infiltration. Clinical parameters like clinical stage and localization and careful histological analysis helps to select molecular method to define molecular features and to select the most appropriate therapy of a given tumor.
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Hyperplastic polyps and serrated adenomas: precancerous lesions with mixed immunophenotype. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY = REVUE ROUMAINE DE MORPHOLOGIE ET EMBRYOLOGIE 2011; 52:797-802. [PMID: 21892521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Our immunohistochemical study wants to be a contribution to clarifying the adenoma-carcinoma sequence and serrated pathway of colorectal carcinogenesis. Thus, we performed immunohistochemical analysis of hyperplastic polyps (HP), serrated adenomas (SA), and classical adenomas (tubular adenomas - TA and tubulovillous adenomas - TVA) and carcinomas developed from adenomas (CA) using expression of p53, Ki-67, c-myc, APC, MSH2 and Ets-1 proteins. Because of correlation of the expression of these proteins, we propose several immunophenotypes, which show modifications along the known carcinogenetic mechanisms. Along the adenoma-carcinoma sequence we noted an increase in the expression of p53, Ki-67, c-myc and Ets-1, and a decrease in APC expression. The majority of TAs and TVAs are characterized by p53+÷Ki-67+, p53+÷c-myc+, p53+÷APC+, and Ets-÷p53+, Ets-÷Ki-67+ immunophenotypes. The majority of HPs and SAs are Ets-÷p53-, Ets-÷Ki-67+, Ets-÷c-myc+, APC+÷MSH2-. In approximately 1÷3 of the hyperplastic polyps and serrated adenomas, we noted that the decrease in expression of MSH2 is associated with an increase in the expression of p53, c-myc, Ki-67, and Ets-1. Thus, we can conclude that a group of hyperplastic polyps and serrated adenomas display similar immunohistochemical characteristics to tubular and tubulovillous adenomas, which delineates a group of precancerous lesions that can develop via mixed carcinogenic pathways.
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Practical value of the complex analysis of sentinel lymph nodes in colorectal carcinomas. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY = REVUE ROUMAINE DE MORPHOLOGIE ET EMBRYOLOGIE 2011; 52:593-8. [PMID: 21655648 DOI: pmid/21655648] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
BACKGROUND Despite modern factors, which seem to predict outcome, lymph node (LN) status remain the main prognostic factor, which also shows the need for complex oncotherapy in colorectal carcinomas (CRC). Sentinel lymph nodes (SLNs) mapping is a very controversial method, which can increase the number of identified LN. MATERIALS AND METHODS In 28 patients who underwent surgical intervention between December 2009 and December 2010, we performed in vivo SLNs mapping followed by ex vivo examination at 1, 10, and 48 hours. All blue nodes were separately included. In cases without LN metastases (pN0) five multilevel sections and immunohistochemical stain with cytokeratin 20 were performed in SLNs. RESULTS Two cases were excluded because they were in pT4 stage. In one case the diameter of lymph nodes was about 10 mm and we obtained a false negative result (negative SLNs with positivity in the non-SLNs). From the other 25 cases, 13 do not presented LN metastases or micrometastases, nine had metastases only in the SLNs and the other three in both SLNs and non-SLNs. Mean identified number of LNs was 15. The blue dye intensity increased after formalin fixation and some nodes with metastases were blue stained only after 10 hours. CONCLUSIONS SLNs mapping is a simple and inexpensive technique, which can improve the management of CRC. All in vivo and ex vivo blue LNs should be considered SLNs. Ultrastaging of SLNs is an expensive method, with uncertain results. High diameter of LNs seems to be an exclusion criterion for SLNs mapping.
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CD105/Ki67 double immunostaining expression in liver metastasis from colon carcinoma. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY = REVUE ROUMAINE DE MORPHOLOGIE ET EMBRYOLOGIE 2011; 52:613-6. [PMID: 21655651 DOI: pmid/21655651] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The liver is the most common and critical site for the development of colon cancer metastases. Tumor angiogenesis in liver metastasis from colon carcinoma is a controversial subject. Liver microenvironment, immunophenotypical and morphological particularities of hepatic vessels are only few aspects, which establish difficulties in quantification of tumor vascularisation from liver metastasis. The aim of this work is to study the distribution of CD105 positive vessels and the proliferation rate of endothelial cells from liver metastasis of colon carcinoma based on double immunostaining CD105/Ki67. In liver metastasis from well-differentiated adenocarcinoma we found a high number of CD105+/Ki67- vessels. On the other hand, in liver metastasis from poorly differentiated adenocarcinoma we noticed rare CD105+/Ki67+ vessels. It is hypothesized that neoangiogenesis of liver metastasis is performed through intussusceptive mechanism rather than sprouting and could be supported by the presence of kissing phenomenon, CD105 positive transcapillary pillars and the absence of endothelial cells proliferation in this vessels. We conclude that in liver metastasis principal mechanism of neovascularisation formation is based on intussusception.
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Mast cells contribute to the angiogenesis in non-Hodgkin lymphoma. An immunohistochemical study based on the relationship with microvessel density. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY = REVUE ROUMAINE DE MORPHOLOGIE ET EMBRYOLOGIE 2011; 52:1091-1096. [PMID: 22119830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
Only few data are available in the literature concerning angiogenesis in hematological malignancies. Non-Hodgkin lymphoma classified on the base of molecular profile is frequently characterized by unpredictable behavior that seems to be related to tumor cells and also to the tumor microenvironment. The tumor microenvironment contains blood vessels and a large variety of cells that can play an important role to the progression of angiogenesis and tumor growth. From these, mast cells have been shown to be a source of angiogenic factors. The aim of this work was to investigated the relationships between mast cells and blood vessels in non-Hodgkin lymphoma and reactive lymphoid tissue from three different anatomical sites. Using double immunostaining method CD34/mast cell tryptase we noticed that mast cell density was significantly lower in the follicular lymphoma than in diffuse type lymphoma. The morphology of vessels, the presence of pillars and splitting suggested that intussusceptions is the main mechanism of angiogenesis. In the cases with primary lymphoma of the spleen, we found few mast cells and a high number of blood vessels. Our data suggest that lymphoma-associated angiogenesis is driven in part by the tumor microenvironment, and particularly, by mast cells. On the other hand, our results support the organ-specific tumor-associated angiogenesis in malignant non-Hodgkin lymphoma.
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Comparison of the Affinity Column—Mediated Immunoassay and Microparticle Enzyme Immunoassay Methods as a Tacrolimus Concentration Assay in the Early Period After Liver Transplantation. Transplant Proc 2010; 42:4137-40. [DOI: 10.1016/j.transproceed.2010.09.088] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2010] [Accepted: 09/22/2010] [Indexed: 11/30/2022]
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Vascular endothelial growth factor: a possible mediator of endothelial activation in acute respiratory distress syndrome. Minerva Anestesiol 2010; 76:609-16. [PMID: 20661201 DOI: pmid/20661201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
AIM Vascular endothelial growth factor (VEGF) is a potent angiogenic and endothelial factor, which is abundantly found in the normal lung tissue. The objective of the study was to assess the VEGF levels in lung tissue and plasma in acute respiratory distress syndrome (ARDS) patients compared with controls who died from non-ARDS causes. METHODS Plasma and tissue samples were prospectively collected from 20 patients with ARDS within 6 hours after intubation (VEGF in plasma and tissue samples) and on the day of extubation (plasma VEGF) or postmortem (lung tissue). We used an ELISA to measure the VEGF level in plasma. Lung specimens were obtained by bronchoscopic biopsy or by open biopsy during autopsy. All lung samples were stained for standard histopathological analysis and for immunohistochemical methods. Biomarker levels were compared between survivors (N=12), non-survivors (N=8) and controls (N=10). RESULTS Compared with the levels in controls, in the early stages of ARDS, plasma VEGF levels rose and intrapulmonary levels fell, but during recovery, these levels went back to normal levels. CONCLUSION The initial phase of ARDS is associated with a decrease in VEGF in the lung and an increase in the plasma. This down-regulation may represent a protective mechanism aimed at limiting endothelial permeability and may participate in the decrease in the capillary number that is observed during early ARDS. A persistent elevation of plasma VEGF over time predicts poor outcome.
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Immunohistochemical comparative study of fibrosis and biliary ductular reaction in alcoholic and viral chronic hepatitis. ROMANIAN JOURNAL OF MORPHOLOGY AND EMBRYOLOGY = REVUE ROUMAINE DE MORPHOLOGIE ET EMBRYOLOGIE 2010; 51:265-9. [PMID: 20495741 DOI: pmid/20495741] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Our study includes 102 cases of liver biopsy previously diagnosed with chronic alcoholic hepatitis and also B and C viral hepatitis. In these cases, we analyzed the extension of fibrosis with two different methods. First, we evaluated fibrosis with the subjective Knodell score; secondly, we used digital image analysis to achieve this. We also used immunohistochemical methods to mark those cells positive at Smooth Muscle Actin (SMA) and Glial Fibrillary Acidic Protein (GFAP). We have observed that the extension of fibrosis was most predominant in cases with B viral chronic hepatitis, while the number of cells responsible of fibrosis (stellate cells, myofibroblasts) was highest in C viral chronic hepatitis. These differences help clinician to divide patients into those who may be treated with interferon and those treatable with antiviral therapy. We observed ductular reaction (as shown by cytokeratin 7 immunostaining) within the lobular structure more frequently in alcohol related chronic hepatitis, whilst in C viral chronic hepatitis this reaction was more readily seen in portal spaces. We have concluded that patients with C viral hepatitis can benefit most from a correctly indicated hepatic biopsy since in these cases the lesions might be observed in an early and potentially curable phase.
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Abstract
BACKGROUND Automated electronic medical records may be useful for syndromic surveillance to quickly detect infectious disease outbreaks. Some syndromic surveillance systems include every encounter in the analysis, whereas others exclude individuals' repeat encounters within the same syndrome occurring within a short period of time, with the rationale that these represent follow-up visits rather than new episodes of illness. METHODS We evaluate the effect of keeping all encounters as compared with removing repeat encounters. Using the prospective space-time permutation scan statistic, we performed daily analyses on all encounters versus on episodes defined as encounters new within 2, 6 or 12 weeks. Data were taken from a Massachusetts Health Maintenance Organization (HMO) for the calendar year 1999 for four different syndromes. RESULTS We found extensive disagreement in the number of signals detected: 70, 68, 21 and 15 signals when using all encounters versus 15-20, 3, 4-5 and 0 signals when using only new episodes for lower respiratory, lower gastrointestinal, upper gastrointestinal and neurologic syndromes, respectively. CONCLUSION Using all encounters in syndromic surveillance may not only create too many signals but may also miss some signals by masking the anomalies generated by actual episodes. However, it is also possible to miss signals when using episodes.
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Radio Imaging of the Very-High-Energy γ-Ray Emission Region in the Central Engine of a Radio Galaxy. Science 2009; 325:444-8. [PMID: 19574351 DOI: 10.1126/science.1175406] [Citation(s) in RCA: 157] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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A randomized phase II trial of weekly docetaxel plus either cisplatin or oxaliplatin in patients with previously untreated advanced gastric cancer: Preliminary results. J Clin Oncol 2009. [DOI: 10.1200/jco.2009.27.15_suppl.4566] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
4566 Background: Docetaxel, in combination with cisplatin or oxaliplatin, has demonstrated efficacy against AGC. This randomized phase II trial evaluated two weekly docetaxel-based regimens to see which would be most promising according to objective response rate (ORR) as first-line therapy in AGC. Methods: Chemotherapy-naïve patients with measurable unresectable and/or metastatic gastric adenocarcinoma and a performance status ≤2 were randomly assigned to receive docetaxel (35 mg/m2) weekly on days 1 and 8 of a 21-day cycle plus either cisplatin (60 mg/m2 on day 1) (arm A) or oxaliplatin (120 mg/m2 on day 1) (arm B). Toxicity was assessed on days 1, 8, and 21 of each cycle, and response was evaluated every 2 cycles. Results: Between March 2007 and December 2008, 61 eligible patients entered. In Arm A, 29 patients were evaluable for objective response and 31 for safety. In Arm B, 28 patients were evaluable for objective response and 30 for safety. Median age was 52 years and disease status was comparable for both arms. Ten of 29 (34.5%) patients had a confirmed objective response in the arm A (95% confidence interval [CI] 17.1–51.8%) and 11 of 28 (39.2%) patients had a confirmed objective response in the arm B (95% CI 21.1- 57.2%). No significant difference was noted between the arms both for ORR (p=0.202) or for disease control (58.6% and 82.1%, respectively, p=0.082). Median progression free survival time was 4.4 month in the arm A and 4.3 months in the arm B (Hazard ratio = 0.936; 95% CI, 0.503–1.744; p = 0.836). There was no relevant difference in the occurrence of overall grade ¾ toxicity between the two arms (51.6% vs. 46.6%, respectively; p=0.800). Neutropenia was the most common grade 3/4 toxicity (32.3% vs. 36.6%, respectively). There was one treatment related death in Arm B. Conclusions: The preliminary results showed that both treatment arms have similar clinical efficacy as front-line treatment in AGC. Each regimen has a manageable tolerability profile. The accrual is ongoing. No significant financial relationships to disclose.
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