Biology and population studies of two endemic Nematoceras (orchid) species on sub-Antarctic Macquarie Island

Two endemic orchid species, Nematoceras dienemum and N. sulcatum, are known from sub-Antarctic Macquarie Island. Several additional orchid populations on the island are reported and deistogamy is documented in N. dienemum for the first time. The known population sizes, habitats and locations for both orchid species are documented here, and new information on their biology and population ecology is provided

Reference point indentation is not indicative of whole mouse bone measures of stress intensity fracture toughness

AbstractBone fragility is a concern for aged and diseased bone. Measuring bone toughness and understanding fracture properties of the bone are critical for predicting fracture risk associated with age and disease and for preclinical testing of therapies. A reference point indentation technique (BioDent) has recently been developed to determine bone's resistance to fracture in a minimally invasive way by measuring the indentation distance increase (IDI) between the first and last indentations over cyclic indentations in the same position. In this study, we investigate the relationship between fracture toughness KC and reference point indentation parameters (i.e. IDI, total indentation distance (TID) and creep indentation distance (CID)) in bones from 38 mice from six types (C57Bl/6, Balb, oim/oim, oim/+, Phospho1−/− and Phospho1 wild type counterpart). These mice bone are models of healthy and diseased bone spanning a range of fracture toughness from very brittle (oim/oim) to ductile (Phospho1−/−). Left femora were dissected, notched and tested in 3-point bending until complete failure. Contralateral femora were dissected and indented in 10 sites of their anterior and posterior shaft surface over 10 indentation cycles. IDI, TID and CID were measured. Results from this study suggest that reference point indentation parameters are not indicative of stress intensity fracture toughness in mouse bone. In particular, the IDI values at the anterior mid-diaphysis across mouse types overlapped, making it difficult to discern differences between mouse types, despite having extreme differences in stress intensity based toughness measures. When more locations of indentation were considered, the normalised IDIs could distinguish between mouse types. Future studies should investigate the relationship of the reference point indentation parameters for mouse bone in other material properties of the bone tissue in order to determine their use for measuring bone quality

Progressive skin fibrosis is associated with a decline in lung function and worse survival in patients with diffuse cutaneous systemic sclerosis in the European Scleroderma Trials and Research (EUSTAR) cohort.

Objectives To determine whether progressive skin fibrosis is associated with visceral organ progression and mortality during follow-up in patients with diffuse cutaneous systemic sclerosis (dcSSc). Methods We evaluated patients from the European Scleroderma Trials and Research database with dcSSc, baseline modified Rodnan skin score (mRSS) ≥7, valid mRSS at 12±3 months after baseline and ≥1 annual follow-up visit. Progressive skin fibrosis was defined as an increase in mRSS >5 and ≥25% from baseline to 12±3 months. Outcomes were pulmonary, cardiovascular and renal progression, and all-cause death. Associations between skin progression and outcomes were evaluated by Kaplan-Meier survival analysis and multivariable Cox regression. Results Of 1021 included patients, 78 (7.6%) had progressive skin fibrosis (skin progressors). Median follow-up was 3.4 years. Survival analyses indicated that skin progressors had a significantly higher probability of FVC decline ≥10% (53.6% vs 34.4%; p<0.001) and all-cause death (15.4% vs 7.3%; p=0.003) than non-progressors. These significant associations were also found in subgroup analyses of patients with either low baseline mRSS (≤22/51) or short disease duration (≤15 months). In multivariable analyses, skin progression within 1 year was independently associated with FVC decline ≥10% (HR 1.79, 95% CI 1.20 to 2.65) and all-cause death (HR 2.58, 95% CI 1.31 to 5.09). Conclusions Progressive skin fibrosis within 1 year is associated with decline in lung function and worse survival in dcSSc during follow-up. These results confirm mRSS as a surrogate marker in dcSSc, which will be helpful for cohort enrichment in future trials and risk stratification in clinical practice

Predictors of disease worsening defined by progression of organ damage in diffuse systemic sclerosis: a European Scleroderma Trials and Research (EUSTAR) analysis

OBJECTIVES: Mortality and worsening of organ function are desirable endpoints for clinical trials in systemic sclerosis (SSc). The aim of this study was to identify factors that allow enrichment of patients with these endpoints, in a population of patients from the European Scleroderma Trials and Research group database. METHODS: Inclusion criteria were diagnosis of diffuse SSc and follow-up over 12±3 months. Disease worsening/organ progression was fulfilled if any of the following events occurred: new renal crisis; decrease of lung or heart function; new echocardiography-suspected pulmonary hypertension or death. In total, 42 clinical parameters were chosen as predictors for the analysis by using (1) imputation of missing data on the basis of multivariate imputation and (2) least absolute shrinkage and selection operator regression. RESULTS: Of 1451 patients meeting the inclusion criteria, 706 had complete data on outcome parameters and were included in the analysis. Of the 42 outcome predictors, eight remained in the final regression model. There was substantial evidence for a strong association between disease progression and age, active digital ulcer (DU), lung fibrosis, muscle weakness and elevated C-reactive protein (CRP) level. Active DU, CRP elevation, lung fibrosis and muscle weakness were also associated with a significantly shorter time to disease progression. A bootstrap validation step with 10 000 repetitions successfully validated the model. CONCLUSIONS: The use of the predictive factors presented here could enable cohort enrichment with patients at risk for overall disease worsening in SSc clinical trials.status: publishe

Progressive skin fibrosis is associated with a decline in lung function and worse survival in patients with diffuse cutaneous systemic sclerosis in the European Scleroderma Trials and Research (EUSTAR) cohort

OBJECTIVES: To determine whether progressive skin fibrosis is associated with visceral organ progression and mortality during follow-up in patients with diffuse cutaneous systemic sclerosis (dcSSc). METHODS: We evaluated patients from the European Scleroderma Trials and Research database with dcSSc, baseline modified Rodnan skin score (mRSS) ≥7, valid mRSS at 12±3 months after baseline and ≥1 annual follow-up visit. Progressive skin fibrosis was defined as an increase in mRSS >5 and ≥25% from baseline to 12±3 months. Outcomes were pulmonary, cardiovascular and renal progression, and all-cause death. Associations between skin progression and outcomes were evaluated by Kaplan-Meier survival analysis and multivariable Cox regression. RESULTS: Of 1021 included patients, 78 (7.6%) had progressive skin fibrosis (skin progressors). Median follow-up was 3.4 years. Survival analyses indicated that skin progressors had a significantly higher probability of FVC decline ≥10% (53.6% vs 34.4%; p<0.001) and all-cause death (15.4% vs 7.3%; p=0.003) than non-progressors. These significant associations were also found in subgroup analyses of patients with either low baseline mRSS (≤22/51) or short disease duration (≤15 months). In multivariable analyses, skin progression within 1 year was independently associated with FVC decline ≥10% (HR 1.79, 95% CI 1.20 to 2.65) and all-cause death (HR 2.58, 95% CI 1.31 to 5.09). CONCLUSIONS: Progressive skin fibrosis within 1 year is associated with decline in lung function and worse survival in dcSSc during follow-up. These results confirm mRSS as a surrogate marker in dcSSc, which will be helpful for cohort enrichment in future trials and risk stratification in clinical practice.status: publishe

Progressive skin fibrosis is associated with a decline in lung function and worse survival in patients with diffuse cutaneous systemic sclerosis in the European Scleroderma Trials and Research (EUSTAR) cohort

Objectives To determine whether progressive skin fibrosis is associated with visceral organ progression and mortality during follow-up in patients with diffuse cutaneous systemic sclerosis (dcSSc). Methods We evaluated patients from the European Scleroderma Trials and Research database with dcSSc, baseline modified Rodnan skin score (mRSS) >= 7, valid mRSS at 12 +/- 3 months after baseline and >= 1 annual follow-up visit. Progressive skin fibrosis was defined as an increase in mRSS >5 and >= 25% from baseline to 12 +/- 3 months. Outcomes were pulmonary, cardiovascular and renal progression, and all-cause death. Associations between skin progression and outcomes were evaluated by Kaplan-Meier survival analysis and multivariable Cox regression. Results Of 1021 included patients, 78 (7.6%) had progressive skin fibrosis (skin progressors). Median follow-up was 3.4 years. Survival analyses indicated that skin progressors had a significantly higher probability of FVC decline >= 10% (53.6% vs 34.4%; p= 10% (HR 1.79, 95% CI 1.20 to 2.65) and all-cause death (HR 2.58, 95% CI 1.31 to 5.09). Conclusions Progressive skin fibrosis within 1 year is associated with decline in lung function and worse survival in dcSSc during follow-up. These results confirm mRSS as a surrogate marker in dcSSc, which will be helpful for cohort enrichment in future trials and risk stratification in clinical practice

Prediction of improvement in skin fibrosis in diffuse cutaneous systemic sclerosis: A EUSTAR analysis

none194Dobrota, Rucsandra; Maurer, Britta; Graf, Nicole; Jordan, Suzana; Mihai, Carina; Kowal-Bielecka, Otylia; Allanore, Yannick; Distler, Oliver; Cerinic, Marco Matucci; Guiducci, Serena; Walker, Ulrich; Lapadula, Giovanni; Iannone, Florenzo; Becvar, Radim; Sierakowsky, Stanislaw; Cutolo, Maurizio; Sulli, Alberto; Valentini, Gabriele; Cuomo, Giovanna; Vettori, Serena; Riemekasten, Gabriela; Siegert, Elise; Rednic, Simona; Nicoara, Ileana; Kahan, André; Vlachoyiannopoulos, P.; Montecucco, C.; Caporali, Roberto; Carreira, Patricia E.; Novak, Srdan; Czirják, László; Varju, Cecilia; Chizzolini, Carlo; Kucharz, Eugene J.; Kotulska, Anna; Kopec-Medrek, Magdalena; Widuchowska, Malgorzata; Cozzi, Franco; Rozman, Blaz; Mallia, Carmel; Coleiro, Bernard; Gabrielli, Armando; Farge, Dominique; Wu, Chen; Marjanovic, Zora; Faivre, Helene; Hij, Darin; Dhamadi, Roza; Airò, Paolo; Hesselstrand, Roger; Wollheim, Frank; Wuttge, Dirk M.; Andréasson, Kristofer; Martinovic, Duska; Balbir-Gurman, Alexandra; Braun-Moscovici, Yolanda; Trotta, F.; Monaco, Andrea Lo; Hunzelmann, Nicolas; Pellerito, Raffaele; Mauriziano, Ospedale; Bambara, Lisa Maria; Caramaschi, Paola; Black, Carol; Denton, Christopher; Damjanov, Nemanja; Henes, Jörg; Santamaria, Vera Ortiz; Heitmann, Stefan; Krasowska, Dorota; Seidel, Matthias; Burkhardt, Harald; Himsel, Andrea; Salvador, Maria J.; Da Silva, José Antonio Pereira; Stamenkovic, Bojana; Stankovic, Aleksandra; Tikly, Mohammed; Ananieva, Lidia P.; Denisov, Lev N.; Müller-Ladner, Ulf; Frerix, Marc; Tarner, Ingo; Scorza, Raffaella; Engelhart, Merete; Strauss, Gitte; Nielsen, Henrik; Damgaard, Kirsten; Mendoza, Antonio Zea; de la Puente, Carlos; Giraldo, Walter A. Sifuentes; Midtvedt, Øyvind; Reiseter, Silje; Hachulla, Eric; Launay, David; Valesini, Guido; Riccieri, Valeria; Ionescu, Ruxandra Maria; Opris, Daniela; Groseanu, Laura; Cornateanu, Roxana Sfrent; Ionitescu, Razvan; Gherghe, Ana Maria; Soare, Alina; Gorga, Marilena; Bojinca, Mihai; Schett, Georg; Distler, Jörg H.W.; Beyer, Christian; Meroni, Pierluigi; Ingegnoli, Francesca; Mouthon, Luc; Keyser, Filip De; Smith, Vanessa; Cantatore, Francesco P.; Corrado, Ada; Pozzi, Maria R.; Eyerich, Kilian; Hein, Rüdiger; Knott, Elisabeth; Wiland, Piotr; Szmyrka-Kaczmarek, Magdalena; Sokolik, Renata; Morgiel, Ewa; Madej, Marta; Krummel-Lorenz, Brigitte; Saar, Petra; Aringer, Martin; Günther, Claudia; Westhovens, Rene; de Langhe, Ellen; Lenaerts, Jan; Anic, Branimir; Baresic, Marko; Mayer, Miroslav; Radominski, Sebastião C.; de Souza Müller, Carolina; Azevedo, Valderílio F.; Agachi, Svetlana; Groppa, Liliana; Chiaburu, Lealea; Russu, Eugen; Popa, Sergei; Zenone, Thierry; Stebbings, Simon; Highton, John; Stamp, Lisa; Chapman, Peter; O'Donnell, John; Solanki, Kamal; Doube, Alan; Veale, Douglas; O'Rourke, Marie; Loyo, Esthela; Li, Mengtao; Rosato, Edoardo; Amoroso, Antonio; Gigante, Antonietta; Tanaseanu, Cristina-Mihaela; Popescu, Monica; Dumitrascu, Alina; Tiglea, Isabela; Foti, Rosario; Chirieac, Rodica; Ancuta, Codrina; Villiger, Peter; Adler, Sabine; de la Peña Lefebvre, Paloma García; Rubio, Silvia Rodriguez; Exposito, Marta Valero; Sibilia, Jean; Chatelus, Emmanuel; Gottenberg, Jacques Eric; Chifflot, Hélène; Litinsky, Ira; Venalis, Algirdas; Butrimiene, Irena; Venalis, Paulius; Rugiene, Rita; Karpec, Diana; Saketkoo, Lesley Ann; Lasky, Joseph A.; Kerzberg, Eduardo; Montoya, Fabiana; Cosentino, Vanesa; Limonta, Massimiliano; Brucato, Antonio Luca; Lupi, Elide; Spertini, François; Ribi, Camillo; Buss, Guillaume; Pasquali, Jean Louis; Martin, Thierry; Gorse, AudreyDobrota, Rucsandra; Maurer, Britta; Graf, Nicole; Jordan, Suzana; Mihai, Carina; Kowal Bielecka, Otylia; Allanore, Yannick; Distler, Oliver; Cerinic, Marco Matucci; Guiducci, Serena; Walker, Ulrich; Lapadula, Giovanni; Iannone, Florenzo; Becvar, Radim; Sierakowsky, Stanislaw; Cutolo, Maurizio; Sulli, Alberto; Valentini, Gabriele; Cuomo, Giovanna; Vettori, Serena; Riemekasten, Gabriela; Siegert, Elise; Rednic, Simona; Nicoara, Ileana; Kahan, André; Vlachoyiannopoulos, P.; Montecucco, Carlomaurizio; Caporali, Roberto; Carreira, Patricia E.; Novak, Srdan; Czirják, László; Varju, Cecilia; Chizzolini, Carlo; Kucharz, Eugene J.; Kotulska, Anna; Kopec Medrek, Magdalena; Widuchowska, Malgorzata; Cozzi, Franco; Rozman, Blaz; Mallia, Carmel; Coleiro, Bernard; Gabrielli, Armando; Farge, Dominique; Wu, Chen; Marjanovic, Zora; Faivre, Helene; Hij, Darin; Dhamadi, Roza; Airò, Paolo; Hesselstrand, Roger; Wollheim, Frank; Wuttge, Dirk M.; Andréasson, Kristofer; Martinovic, Duska; Balbir Gurman, Alexandra; Braun Moscovici, Yolanda; Trotta, F.; Monaco, Andrea Lo; Hunzelmann, Nicolas; Pellerito, Raffaele; Mauriziano, Ospedale; Bambara, Lisa Maria; Caramaschi, Paola; Black, Carol; Denton, Christopher; Damjanov, Nemanja; Henes, Jörg; Santamaria, Vera Ortiz; Heitmann, Stefan; Krasowska, Dorota; Seidel, Matthias; Burkhardt, Harald; Himsel, Andrea; Salvador, Maria J.; Da Silva, José Antonio Pereira; Stamenkovic, Bojana; Stankovic, Aleksandra; Tikly, Mohammed; Ananieva, Lidia P.; Denisov, Lev N.; Müller Ladner, Ulf; Frerix, Marc; Tarner, Ingo; Scorza, Raffaella; Engelhart, Merete; Strauss, Gitte; Nielsen, Henrik; Damgaard, Kirsten; Mendoza, Antonio Zea; de la Puente, Carlos; Giraldo, Walter A. Sifuentes; Midtvedt, Øyvind; Reiseter, Silje; Hachulla, Eric; Launay, David; Valesini, Guido; Riccieri, Valeria; Ionescu, Ruxandra Maria; Opris, Daniela; Groseanu, Laura; Cornateanu, Roxana Sfrent; Ionitescu, Razvan; Gherghe, Ana Maria; Soare, Alina; Gorga, Marilena; Bojinca, Mihai; Schett, Georg; Distler, Jörg H. W.; Beyer, Christian; Meroni, Pierluigi; Ingegnoli, Francesca; Mouthon, Luc; Keyser, Filip De; Smith, Vanessa; Cantatore, Francesco P.; Corrado, Ada; Pozzi, Maria R.; Eyerich, Kilian; Hein, Rüdiger; Knott, Elisabeth; Wiland, Piotr; Szmyrka Kaczmarek, Magdalena; Sokolik, Renata; Morgiel, Ewa; Madej, Marta; Krummel Lorenz, Brigitte; Saar, Petra; Aringer, Martin; Günther, Claudia; Westhovens, Rene; de Langhe, Ellen; Lenaerts, Jan; Anic, Branimir; Baresic, Marko; Mayer, Miroslav; Radominski, Sebastião C.; de Souza Müller, Carolina; Azevedo, Valderílio F.; Agachi, Svetlana; Groppa, Liliana; Chiaburu, Lealea; Russu, Eugen; Popa, Sergei; Zenone, Thierry; Stebbings, Simon; Highton, John; Stamp, Lisa; Chapman, Peter; O'Donnell, John; Solanki, Kamal; Doube, Alan; Veale, Douglas; O'Rourke, Marie; Loyo, Esthela; Li, Mengtao; Rosato, Edoardo; Amoroso, Antonio; Gigante, Antonietta; Tanaseanu, Cristina Mihaela; Popescu, Monica; Dumitrascu, Alina; Tiglea, Isabela; Foti, Rosario; Chirieac, Rodica; Ancuta, Codrina; Villiger, Peter; Adler, Sabine; de la Peña Lefebvre, Paloma García; Rubio, Silvia Rodriguez; Exposito, Marta Valero; Sibilia, Jean; Chatelus, Emmanuel; Gottenberg, Jacques Eric; Chifflot, Hélène; Litinsky, Ira; Venalis, Algirdas; Butrimiene, Irena; Venalis, Paulius; Rugiene, Rita; Karpec, Diana; Saketkoo, Lesley Ann; Lasky, Joseph A.; Kerzberg, Eduardo; Montoya, Fabiana; Cosentino, Vanesa; Limonta, Massimiliano; Brucato, Antonio Luca; Lupi, Elide; Spertini, François; Ribi, Camillo; Buss, Guillaume; Pasquali, Jean Louis; Martin, Thierry; Gorse, Audre