40 results on '"SHORT-TERM RESPONSE"'
Search Results
2. The Effects of Low-Load Squat Jump and Maximal Isometric Priming Exercise on Muscular Performance and Perceptual State.
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Harrison, Peter W., James, Lachlan P., Jenkins, David G., McGuigan, Michael R., Holmberg, Patrick M., and Kelly, Vincent G.
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ISOMETRIC exercise , *RESISTANCE training , *CONFIDENCE intervals , *RANDOMIZED controlled trials , *PRE-tests & post-tests , *COMPARATIVE studies , *BODY movement , *MUSCLE strength , *DESCRIPTIVE statistics , *QUESTIONNAIRES , *EXERCISE intensity , *JUMPING , *ATHLETIC ability , *STATISTICAL sampling , *BIOMECHANICS , *WARMUP - Abstract
The aim of this study was to examine responses at 3 and 27 hours after low-load jump squat (LL) and maximal isometric half-squat (ISO) priming stimuli. Fifteen resistance-trained males performed LL (4 3 3 at 20% 1 repetition maximum [1RM]), ISO (4 3 3 seconds), and control (CON) activities (standardized warm-up) in a randomized and counterbalanced order. Countermovement jump (CMJ) and isometric midthigh pull tests were conducted to assess performance changes after priming and CON activities. No clear changes in CMJ measures were found after priming activities compared with CON. However, small effect size improvements were found after priming stimuli completed on the same day. A 2.9% decrease in concentric phase duration (CI 5 0.3-5.9, p 5 0.333, Cliff's delta520.156) and a 9.1% increase in RSImod (CI 50.2-12.3, p50.151, Cliff's delta520.218) occurred at 3 hours after LL compared with CON. Braking phase duration (CI 5 0.8-10.6, p 5 0.333, Cliff's delta520.213) was 2.9% shorter at 3 hours after ISO compared with CON. No clear changes in isometric peak force occurred after priming activities compared with CON. Additionally, questionnaires were completed to assess perceptual state and perceived effectiveness of the priming stimulus to influence performance. An increase in the "effect of activity" was perceived at 3 hours after LL and ISO (p 5 0.013-0.044, Cliff's delta 5 0.578-0.6) and at 27 hours after ISO (p 5 0.99, Cliff's delta 5 0.173) compared with CON. An increase in "muscular heaviness" was also reported at 3 hours after ISO compared with CON (p 5 0.199, Cliff's delta 5 0.320). The collective findings suggest limited benefits over the day after LL and ISO priming stimuli. However, as there was substantial variation in individual responses, the relative nature of priming responses should be considered when prescribing similar strategies in practical environments. [ABSTRACT FROM AUTHOR]
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- 2024
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3. Assessment of Response to Different Induction Chemotherapy Regimens in Locally Advanced Nasopharyngeal Carcinoma
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Lian CL, Zhou R, Zhou Y, Zhou P, and Wu SG
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nasopharyngeal carcinoma ,induction chemotherapy ,short-term response ,lymph node ,survival ,Therapeutics. Pharmacology ,RM1-950 - Abstract
Chen-Lu Lian,1– 3,* Rui Zhou,2,* Yuan Zhou,2,* Ping Zhou,2 San-Gang Wu1,2 1The School of Clinical Medicine, Fujian Medical University, Fuzhou, People’s Republic of China; 2Department of Radiation Oncology, Xiamen Cancer Center, Xiamen Key Laboratory of Radiation Oncology, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, People’s Republic of China; 3Department of Radiation Oncology, Fudan University Shanghai Cancer Center (Xiamen Branch), Xiamen, People’s Republic of China*These authors contributed equally to this workCorrespondence: San-Gang Wu, Department of Radiation Oncology, Xiamen Cancer Center, Xiamen Key Laboratory of Radiation Oncology, The First Affiliated Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, 361003, People’s Republic of China, Email unowu12345@hotmail.comPurpose: To compare the short-term treatment response and survival of the three induction chemotherapy (IC) regimens, including gemcitabine and cisplatin (GP), docetaxel and cisplatin (TP), and docetaxel, cisplatin, and fluoropyrimidines (TPF) in locally advanced nasopharyngeal carcinoma (LANPC).Methods: We included stage III–IVA NPC patients who received ≥ 3 cycles of IC in this study. The chi-square test, multivariate logistic regression analysis, and Kaplan–Meier method were used for statistical analysis.Results: A total of 227 patients were included. The overall response rate (ORR) of the primary nasopharyngeal tumors after IC with GP, TP, and TPF was 91.9%, 83.8%, and 91.7%, respectively (P=0.729), and the ORR of the cervical lymph nodes was 94.6%, 72.3%, and 85.0%, respectively (P< 0.001). For the primary nasopharyngeal tumor, there was no significant difference in the ORR among the three IC regimens. For cervical lymph nodes, patients treated with GP had significantly higher ORR compared to those treated with the TP regimen (P=0.014), and comparable ORR was found between TPF and GP regimens (P=0.161). Similar progression-free survival (PFS) (P=0.501) and overall survival (OS) (P=0.504) were found among three IC regimens. There were comparable PFS (P=0.123) and OS (P=0.478) among those with complete response (CR), partial response (PR), and stable disease (SD)/progressive disease (PD) in the primary nasopharyngeal tumors. However, patients who had CR in the primary nasopharyngeal tumor (P=0.014) and the cervical lymph nodes (P=0.022) had better PFS compared to those who had PR or SD/PD.Conclusion: GP and TPF regimens are equivalent to the TP regimen in the response to primary nasopharyngeal tumors after IC, but with better ORR in the cervical lymph nodes than the TP regimen. The response to IC may be a powerful indicator for predicting prognosis and developing individualized follow-up and treatment strategies for LANPC patients.Keywords: nasopharyngeal carcinoma, induction chemotherapy, short-term response, lymph node, survival
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- 2023
4. Factors Modulating the Priming Response to Resistance and Stretch-Shortening Cycle Exercise Stimuli.
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Holmberg, Patrick M., Harrison, Peter W., Jenkins, David G., and Kelly, Vincent G.
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"Priming exercises" are gaining popularity as a precompetition strategy to improve subsequent performance. Although priming exercise has been shown to improve various neuromuscular performance measures within 48 hours, a number of studies have also found no change or significant decreases in performance following priming interventions. Inconsistencies in findings are likely due to the many different variables used in the research. In addition, evidence suggests that the potential performance response following a priming stimulus is likely to be influenced by individual characteristics. Therefore, the purpose of this review is to examine the available evidence and identify those variables that most strongly determine whether priming stimuli involving resistance and stretch-shortening cycle exercise tasks are likely to improve performance within 48 hours of that stimulus. In addition to making recommendations based on the evidence to date, directions for future research are also identified. [ABSTRACT FROM AUTHOR]
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- 2023
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5. Negligible Response of Transpiration to Late-Summer Nitrogen Fertilization in Japanese Oak (Quercus crispula)
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Nao Nagano, Tomonori Kume, Yasuhiro Utsumi, Naoaki Tashiro, Kyoichi Otsuki, and Masaaki Chiwa
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deciduous hardwood forest ,N fertilization ,short-term response ,thermal dissipation method ,transpiration ,Ecology ,QH540-549.5 - Abstract
Increased atmospheric nitrogen (N) deposition, caused by anthropogenic activities, has various effects on forest ecosystems. Some reports have investigated the responses in tree transpiration to N addition, but few studies have measured the short-term response of mature tree transpiration to N fertilization. This study aimed to clarify the short-term transpiration response in 27-year-old deciduous hardwood trees to an increase in N availability. We established two plot types (control and N-fertilized plots) in Quercus crispula plantation stands in Hokkaido, Northern Japan. We measured sap flow density (SFD; cm3 m−2 s−1) using a thermal dissipation method for three months during the growing season. In the N-fertilized plot, we added 50 kg N ha−1 yr−1 of ammonium nitrate (NH4NO3) to the forest floor in the middle of the measurement periods. For daily mean SFD, we did not find a significant difference between the control and the N-fertilized plots. Leaf N contents did not differ between treatments, implying a negligible difference in physiological responses and transpiration rates. The slight difference between treatments could be because the trees had already foliated before applying the N fertilizer to our deciduous hardwood trees. The present results indicate that the potential increase in N deposition during the growing season does not immediately alter tree transpiration.
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- 2022
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6. Negligible Response of Transpiration to Late-Summer Nitrogen Fertilization in Japanese Oak (Quercus crispula).
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Nagano, Nao, Kume, Tomonori, Utsumi, Yasuhiro, Tashiro, Naoaki, Otsuki, Kyoichi, and Chiwa, Masaaki
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OAK ,DECIDUOUS plants ,ATMOSPHERIC nitrogen ,PLANT transpiration ,GROWING season ,AMMONIUM nitrate - Abstract
Increased atmospheric nitrogen (N) deposition, caused by anthropogenic activities, has various effects on forest ecosystems. Some reports have investigated the responses in tree transpiration to N addition, but few studies have measured the short-term response of mature tree transpiration to N fertilization. This study aimed to clarify the short-term transpiration response in 27-year-old deciduous hardwood trees to an increase in N availability. We established two plot types (control and N-fertilized plots) in Quercus crispula plantation stands in Hokkaido, Northern Japan. We measured sap flow density (SFD; cm
3 m−2 s−1 ) using a thermal dissipation method for three months during the growing season. In the N-fertilized plot, we added 50 kg N ha−1 yr−1 of ammonium nitrate (NH4 NO3 ) to the forest floor in the middle of the measurement periods. For daily mean SFD, we did not find a significant difference between the control and the N-fertilized plots. Leaf N contents did not differ between treatments, implying a negligible difference in physiological responses and transpiration rates. The slight difference between treatments could be because the trees had already foliated before applying the N fertilizer to our deciduous hardwood trees. The present results indicate that the potential increase in N deposition during the growing season does not immediately alter tree transpiration. [ABSTRACT FROM AUTHOR]- Published
- 2022
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7. Long-Term Follow-Up of Single-Fiber Multiple Low-Intensity Energy Laser Ablation Technique of Benign Thyroid Nodules.
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Squarcia, Mattia, Mora, Mireia, Aranda, Gloria, Carrero, Enrique, Martínez, Daniel, Jerez, Ramona, Valero, Ricard, Berenguer, Joan, Halperin, Irene, and Hanzu, Felicia A.
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THYROID nodules ,LASER ablation ,ABLATION techniques ,FIBER lasers ,OPTICAL fibers ,NEEDLES & pins ,NEEDLE biopsy - Abstract
Aim: The short-term and long-term efficacy of different thermal percutaneous ablation techniques remains a topical issue. Our group implemented percutaneous laser ablation (LA), a moving-shot technique to increase efficiency and reduce costs and variability of LA by applying multiple lower-intensity energy illuminations (MLIEI) covering the nodular volume (V) through changes in position of a single laser fiber within the thyroid nodule. The aim of the present study was to evaluate the efficacy of the single-fiber LA-MLIEI during a 5-year follow-up and to identify possible predictors of the final outcome. Methods: Prospective study : Thirty outpatients (23 women and seven men) with benign symptomatic thyroid nodules were assigned to single-fiber LA-MLIEI, between 2012 and 2015. A single LA session was performed under real-time ultrasound (US) guidance using a 1,064-nm continuous-wave laser at 3 W. A 400-µm optical fiber was inserted through a 21-gauge needle, and 3–10 illuminations were performed per nodule, administering between 400 and 850 J/illumination. The total administered energy was calculated on the initial V of the nodule and the estimated ablation area. US evaluation was performed after LA-MLIEI at 1 week and 1, 3, 6, and 12 months and after that annually up to 5 years. Clinical symptoms, laboratory thyroid function during follow-up, and acute and chronic complications of treatment were registered. Results: On follow-up, 67% (n: 20) were responders to single-fiber LA-MLIEI, while 33% (n: 10) were non-responders. The responder group initiated V reduction (ΔV) at 1 month, with remission of symptoms, and presented a 50% ΔV at 3 months of treatment; the maximum response was achieved at 24 months and remained stable until the end of the study. The non-responder group presented a ΔV of less than 50% at 12 months; though a tendency to >50% ΔV was observed at 24–36 months, there was subsequent regrowth, and 40% of this group required surgery. ΔV was positively correlated with the total administered energy/V (J/V) and inversely with nodule V. No severe adverse effects were observed. Thyroid function remained normal in all patients. Remission of symptoms occurred rapidly after 1 month. Conclusions: LA with multiple fractional discharges employing a single fiber in a unique session is a safe and inexpensive technique that allows rapid reduction of thyroid nodules, with a stable response up to 5 years, similarly to what has been reported with the conventional LA. Total nodule volume appears as a predictive factor of the reduction. [ABSTRACT FROM AUTHOR]
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- 2021
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8. Long-Term Follow-Up of Single-Fiber Multiple Low-Intensity Energy Laser Ablation Technique of Benign Thyroid Nodules
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Mattia Squarcia, Mireia Mora, Gloria Aranda, Enrique Carrero, Daniel Martínez, Ramona Jerez, Ricard Valero, Joan Berenguer, Irene Halperin, and Felicia A. Hanzu
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single fiber ,unique session ,thyroid nodules ,long-term response ,short-term response ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,RC254-282 - Abstract
AimThe short-term and long-term efficacy of different thermal percutaneous ablation techniques remains a topical issue. Our group implemented percutaneous laser ablation (LA), a moving-shot technique to increase efficiency and reduce costs and variability of LA by applying multiple lower-intensity energy illuminations (MLIEI) covering the nodular volume (V) through changes in position of a single laser fiber within the thyroid nodule. The aim of the present study was to evaluate the efficacy of the single-fiber LA-MLIEI during a 5-year follow-up and to identify possible predictors of the final outcome.MethodsProspective study: Thirty outpatients (23 women and seven men) with benign symptomatic thyroid nodules were assigned to single-fiber LA-MLIEI, between 2012 and 2015. A single LA session was performed under real-time ultrasound (US) guidance using a 1,064-nm continuous-wave laser at 3 W. A 400-µm optical fiber was inserted through a 21-gauge needle, and 3–10 illuminations were performed per nodule, administering between 400 and 850 J/illumination. The total administered energy was calculated on the initial V of the nodule and the estimated ablation area. US evaluation was performed after LA-MLIEI at 1 week and 1, 3, 6, and 12 months and after that annually up to 5 years. Clinical symptoms, laboratory thyroid function during follow-up, and acute and chronic complications of treatment were registered.ResultsOn follow-up, 67% (n: 20) were responders to single-fiber LA-MLIEI, while 33% (n: 10) were non-responders. The responder group initiated V reduction (ΔV) at 1 month, with remission of symptoms, and presented a 50% ΔV at 3 months of treatment; the maximum response was achieved at 24 months and remained stable until the end of the study. The non-responder group presented a ΔV of less than 50% at 12 months; though a tendency to >50% ΔV was observed at 24–36 months, there was subsequent regrowth, and 40% of this group required surgery. ΔV was positively correlated with the total administered energy/V (J/V) and inversely with nodule V. No severe adverse effects were observed. Thyroid function remained normal in all patients. Remission of symptoms occurred rapidly after 1 month.ConclusionsLA with multiple fractional discharges employing a single fiber in a unique session is a safe and inexpensive technique that allows rapid reduction of thyroid nodules, with a stable response up to 5 years, similarly to what has been reported with the conventional LA. Total nodule volume appears as a predictive factor of the reduction.
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- 2021
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9. Effects of abiotic stressors on lutein production in the green microalga Dunaliella salina.
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Fu, Weiqi, Paglia, Giuseppe, Magnúsdóttir, Manuela, Steinarsdóttir, Elín A, Gudmundsson, Steinn, Palsson, Bernhard Ø, Andrésson, Ólafur S, and Brynjólfsson, Sigurður
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Nitrates ,Carotenoids ,Lutein ,Chlorophyll ,Bioreactors ,Osmotic Pressure ,Light ,Stress ,Physiological ,Microalgae ,Batch Cell Culture Techniques ,Dunaliella salina ,Adaptive laboratory evolution ,Response surface methodology ,Lutein production ,Osmotic stress ,Short-term response ,Stress ,Physiological ,Microbiology ,Industrial Biotechnology ,Biotechnology - Abstract
BackgroundRecent years have witnessed a rising trend in exploring microalgae for valuable carotenoid products as the demand for lutein and many other carotenoids in global markets has increased significantly. In green microalgae lutein is a major carotenoid protecting cellular components from damage incurred by reactive oxygen species under stress conditions. In this study, we investigated the effects of abiotic stressors on lutein accumulation in a strain of the marine microalga D. salina which had been selected for growth under stress conditions of combined blue and red lights by adaptive laboratory evolution.ResultsNitrate concentration, salinity and light quality were selected as three representative influencing factors and their impact on lutein production in batch cultures of D. salina was evaluated using response surface analysis. D. salina was found to be more tolerant to hyper-osmotic stress than to hypo-osmotic stress which caused serious cell damage and death in a high proportion of cells while hyper-osmotic stress increased the average cell size of D. salina only slightly. Two models were developed to explain how lutein productivity depends on the stress factors and for predicting the optimal conditions for lutein productivity. Among the three stress variables for lutein production, stronger interactions were found between nitrate concentration and salinity than between light quality and the other two. The predicted optimal conditions for lutein production were close to the original conditions used for adaptive evolution of D. salina. This suggests that the conditions imposed during adaptive evolution may have selected for the growth optima arrived at.ConclusionsThis study shows that systematic evaluation of the relationship between abiotic environmental stresses and lutein biosynthesis can help to decipher the key parameters in obtaining high levels of lutein productivity in D. salina. This study may benefit future stress-driven adaptive laboratory evolution experiments and a strategy of applying stress in a step-wise manner can be suggested for a rational design of experiments.
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- 2014
10. Coastal Flooding Process: Comparing Different Coastal Typologies Response to Extreme Hydrodynamic Conditions.
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Freire, Paula, Oliveira, Filipa S. B. F., and Oliveira, João Nuno C.
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STORM surges , *FLOOD control , *CONDITIONED response , *FLOODS , *FORECASTING , *COASTAL zone management - Abstract
Freire, P.; Oliveira, F. S. B. F. and Oliveira, J. N., 2020. Coastal flooding process: Comparing different coastal typologies response to extreme hydrodynamic conditions. In: Malvárez, G. and Navas, F. (eds.), Global Coastal Issues of 2020. Journal of Coastal Research, Special Issue No. 95, pp. 797–802. Coconut Creek (Florida), ISSN 0749-0208. To upgrade the response capability to coastal flood events, hazard predictions need to be improved through integrating the effect of the coastal morphological variability in the nearshore-foreshore-backshore hydromorphological processes induced by waves-tide-wind-atmospheric pressure. In order to evaluate the short-term morphological response of different coastal typologies to potential flood conditions (spring high tide level, storm surge, high wave height), field data acquired in 2019 in three sites in the West coast of Portugal with past flooding episodes are presented and discussed. The preliminary results point out that under the same forcing conditions the short-term response of the cross-shore beach profile that controls the flooding levels is dependent on the beach typology, namely: the nature of the lower and upper limits of the beach face, profile gradient and its alongshore context. This knowledge can be used to develop robust and validated flood prediction tools contributing to improve mitigation and adaptation management strategies. [ABSTRACT FROM AUTHOR]
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- 2020
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11. Statistical dependence for detecting whale‐watching effects on humpback whales.
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Garcia‐Cegarra, Ana M., Villagra, Damian, Gallardo, Diego I., and Pacheco, Aldo S.
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WHALE watching , *STATISTICS , *HUMPBACK whale , *ECOTOURISM , *CETACEA - Abstract
Whale‐watching is one of the fastest growing ecotourism industries and involves the observation of endangered wild cetacean species. However, this growth has raised concerns because of the negative effects this activity may have on the behavior and survival of focal species. Hence, detecting the effects of this activity requires sensitive analytical methods allowing the implementation of regulations to protect cetacean welfare. We compared the performance of different hypothesis tests from classical and Bayesian approaches to detect whale‐watching effects on humpback whale (Megaptera novaeangliae) behavior. From a cliff located 31 m above sea level in northern Peru, we measured breathing frequency, surface time, long dive duration, directness index (i.e., path linearity), and swimming speed of humpback whales before, during, and after encounters with whale‐watching boats. During 167 hours of observation, we tracked 180 humpback whale groups; 43% of groups had calves and 57% did not. Inference by null‐hypothesis testing indicated significant changes only in directness index after boat encounters in groups with a calf. Other methods of inference detected moderate behavior responses as increments in the number of adult breaths, swimming speed, and dive intervals for adults and calves. Whale‐watching regulations must be implemented in Peru to regulate number of boats, distance to whales, approximate speed, and time observing humpback whales. Whale‐watching of humpback whales with calves should be avoided. © 2018 The Wildlife Society. Humpback whales perform different behavior responses under the presence of whale‐watching vessels. In northern Peru, mother‐calf groups of humpback whales avoided whale‐watching vessels by adopting a more sinuous path, longer dives, and by decreasing breathing frequency, whereas non‐calf groups avoided whale‐watching vessels by increasing swimming speed, surface time, and breathing frequency. The need for governmental whale‐watching regulations in Peru is imminent and we recommend avoiding observation of mother‐calf humpback whales. [ABSTRACT FROM AUTHOR]
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- 2019
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12. Transcriptome profiling of short-term response to chilling stress in tolerant and sensitive Oryza sativa ssp. Japonica seedlings.
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Buti, Matteo, Pasquariello, Marianna, Ronga, Domenico, Milc, Justyna Anna, Pecchioni, Nicola, Ho, Viet The, Pucciariello, Chiara, Perata, Pierdomenico, and Francia, Enrico
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TRANSCRIPTOMES , *EFFECT of cold on plants , *SEEDLINGS , *RICE yields , *PLANT development - Abstract
Low temperature is a major factor limiting rice growth and yield, and seedling is one of the developmental stages at which sensitivity to chilling stress is higher. Tolerance to chilling is a complex quantitative trait, so one of the most effective approaches to identify genes and pathways involved is to compare the stress-induced expression changes between tolerant and sensitive genotypes. Phenotypic responses to chilling of 13 Japonica cultivars were evaluated, and Thaibonnet and Volano were selected as sensitive and tolerant genotypes, respectively. To thoroughly profile the short-term response of the two cultivars to chilling, RNA-Seq was performed on Thaibonnet and Volano seedlings after 0 (not stressed), 2, and 10 h at 10 °C. Differential expression analysis revealed that the ICE-DREB1/CBF pathway plays a primary role in chilling tolerance, mainly due to some important transcription factors involved (some of which had never been reported before). Moreover, the expression trends of some genes that were radically different between Thaibonnet and Volano (i.e., calcium-dependent protein kinases OsCDPK21 and OsCDPK23, cytochrome P450 monooxygenase CYP76M8, etc.) suggest their involvement in low temperature tolerance too. Density of differentially expressed genes along rice genome was determined and linked to the position of known QTLs: remarkable co-locations were reported, delivering an overview of genomic regions determinant for low temperature response at seedling stage. Our study contributes to a better understanding of the molecular mechanisms underlying rice response to chilling and provides a solid background for development of low temperature-tolerant germplasm. [ABSTRACT FROM AUTHOR]
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- 2018
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13. Basal characteristics and first year responses to human growth hormone (GH) vary according to diagnostic criteria in children with non-acquired GH deficiency (naGHD): observations from a single center over a period of five decades.
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Ranke, Michael B., Schweizer, Roland, and Binder, Gerhard
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Background: Children with non-acquired (na) growth hormone deficiency (GHD) diagnosed over decades in one center may provide perspective insight. Methods: naGHD is divided into idiopathic GHD (IGHD), GHD of known cause (cGHD) and GHD neurosecretory dysfunction (NSD); time periods: <1988 (I); 1988–1997 (II); 1998–2007 (III); 2008–2015 (IV). Descriptive analyses were performed at diagnosis and during first year GH treatment. Results: Patients (periods, N): I, 87; II, 141; III, 356; IV, 51. In cGHD (all), age, maximum GH, insulin-like growth factor-I (IGF-I), and insulin-like growth factor-binding protein-3 (IGFBP-3) (5.1 years, 3.6 μg/L, −5.3 standard deviation score [SDS], −3.7 SDS) were lower than in IGHD (all) (6.8 years 5.8 μg/L, −2.5 SDS, −1.0 SDS), but not height (−3.1 vs. −3.2 SDS). Characteristics of NSD were similar to that of IGHD. Patients with IGHD – not cGHD – diagnosed during 2008–2015 (IV) were the youngest with most severe GHD (maxGH, IGF-I, IGFBP-3), and first year height velocity (HV) and ∆ IGF-I (10.5 cm/year, 4.0 SDS) but not ∆ height SDS were the highest on recombinant human growth hormone (rhGH) (27 μg/kg/day). Conclusions: Although during 1988–2007 patient characteristics were similar, the recently (>2008) stipulated more stringent diagnostic criteria – HV before testing, sex steroid priming, lower GH cut-off – have restricted diagnoses to more severe cases as they were observed before the rhGH era. [ABSTRACT FROM AUTHOR]
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- 2018
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14. Evaluation of a transient borehole heat exchanger model in dynamic simulation of a ground source heat pump system.
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Biglarian, Hassan, Abbaspour, Madjid, and Saidi, Mohammad Hassan
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HEAT exchangers , *GROUND source heat pump systems , *DYNAMIC simulation , *ELECTRIC transients , *HEAT capacity - Abstract
The performance of a vertical ground source heat pump system (GSHPS) largely depends on the fluid temperature leaving the borehole heat exchanger (BHE) that may be affected by the short-term behavior of the BHE. Although considerable research has been carried out to analyze the short-term transient response of the BHEs, few studies have investigated its impact on dynamic simulation of GSHPS. Therefore, this paper presents a numerical approach based on a transient BHE model to evaluate the performance of a residential GSHPS over short and long timescales. The numerical results are compared with the results of EnergyPlus software. It is shown that the proposed model can appropriately predict the dynamic behavior of the system. Moreover, effect of borehole thermal capacity on the performance of the GSHPS is investigated in comparison with a quasi-steady state model. It is found that including the borehole thermal capacity substantially affects the design borehole length. Using the transient model instead of the quasi-steady state model leads to a 16% reduction in the required borehole length. [ABSTRACT FROM AUTHOR]
- Published
- 2018
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15. Gut microbiome response to short-term dietary interventions in reactive hypoglycemia subjects.
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Quercia, Sara, Turroni, Silvia, Fiori, Jessica, Soverini, Matteo, Rampelli, Simone, Biagi, Elena, Castagnetti, Andrea, Consolandi, Clarissa, Severgnini, Marco, Pianesi, Mario, Fallucca, Francesco, Pozzilli, Paolo, Brigidi, Patrizia, and Candela, Marco
- Abstract
Background: Reactive hypoglycemia is a metabolic disorder that provokes severe hypoglycemic episodes after meals. Over recent years, the gut microbiota has been recognized as potential target for the control of metabolic diseases, and the possibility to correct gut microbiota dysbioses through diet, favouring the recovery of metabolic homeostasis, has been considered.Methods: We investigate the impact of 2 short-term (3-day) nutritional interventions, based on the macrobiotic Ma-Pi 2 diet and a control Mediterranean diet, on the structure and functionality of the gut microbiota in 12 patients affected by reactive hypoglycemia. The gut microbiota composition was characterized by next-generation sequencing of the V3 to V4 region of the 16S rRNA gene, and the ecosystem functionality was addressed by measuring the faecal concentration of short-chain fatty acids (SCFAs). In order to measure the short-term physiological gut microbiota fluctuation, the microbiomes of 7 healthy people were characterized before and after 3 days of constant diet.Results: While no convergence of the gut microbiota compositional profiles was observed, a significant increase in SCFA faecal levels was induced only in the Ma-Pi 2 diet group, suggesting the potential of this diet to support a short-term functional convergence of the gut microbiota, regardless of the individual compositional layout.Conclusions: The Ma-Pi 2 diet, with its high fibre load, was effective in increasing the production of SCFAs by the gut microbiota. Because these metabolites are known for their ability to counterbalance the metabolic deregulation in persons with glucose impairment disorders, their increased bioavailability could be of some relevance in reactive hypoglycemia. [ABSTRACT FROM AUTHOR]- Published
- 2017
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16. Short-Term Response of a Coastal Wetland Fish Assemblage to Tidal Regime Restoration in Oregon.
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Silver, Brook P., Hudson, J. Michael., Lohr, Samuel C., and Whitesel, Timothy A.
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FISHES ,WETLANDS ,MARSHES - Abstract
Bandon Marsh National Wildlife Refuge, Oregon, completed construction of a large-scale tidal marsh restoration project on the Ni-les'tun Unit within the Coquille River estuary in 2011. To understand the initial effects of restoration construction and establish a baseline for long-term monitoring, we documented the assemblage of fish species 3 y before and 2 y after restoration construction. The overall fish assemblage in the Ni-les'tun Unit was substantially different after restoration construction, with an increased abundance, frequency, and richness of estuarine and diadromous fish species. Threespine Stickleback Gasterosteus aculeatus and species of Sculpin (family Cottidae) dominated the Ni-les'tun Unit and control area in both relative abundance and capture frequency throughout this study. Among salmonids, Coastal Cutthroat Trout Oncorhynchus clarkii and Coho Salmon Oncorhynchus kisutch had the highest frequency of occurrence and relative abundance both before and after restoration construction. Fish occupied newly constructed channels within 2 y. Species found in new channels included freshwater species (e.g., juvenile salmonids), introduced species (e.g., Mosquitofish Gambusia affinis), and estuarine species (e.g., Sculpin, Threespine Stickleback, and Shiner Perch Cymatogaster aggregata). Changes were likely due to improved access and changing habitat created by the reintroduced tidal regime. We recommend long-term monitoring to assess the trajectory of the biological response to the restoration over time. [ABSTRACT FROM AUTHOR]
- Published
- 2017
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17. Response-based analysis for Tension Leg Platform.
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Chen, Yongjun and Zhang, Dagang
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The typical industry practice for Tension Leg Platform (TLP) design focuses on a conventional short-term design recipe, which assumes that an N-year design environment leads to an N-year response. In the response-based design method, the TLP is designed to withstand N-year responses rather than respond to N-year environmental conditions. In this paper, we present an overview and a general procedure for the response-based design method and use a case study to compare the critical TLP responses between the two methods. The results of our comparison show that the conventional short-term design method often contains an element of conservatism and that the response-based design method can reduce the design conditions and thereby achieve cost savings. [ABSTRACT FROM AUTHOR]
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- 2017
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18. Short-term responses of nutrients and algal biomass in a eutrophic shallow lake to different scales of water transfer.
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Tan, Lang, Wang, Zongzhi, Bai, Ying, and Huang, Xiaorong
- Published
- 2023
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19. Evaluation of the Short-Term Response in Refractory Trigeminal Neuralgia Treated With CyberKnife.
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Pérez Fernández A, Aquino RE, Niño De Guzmán C, Mancebo Díaz L, Mera M, and Solarte H
- Abstract
Objectives Stereotactic radiosurgery combined with pharmacological treatment is currently one of the most acceptable alternatives for the treatment of trigeminal neuralgia (TN). Our primary endpoint was to report the short-term response (one month) outcomes of 10 patients with refractory TN after CyberKnife
® (CK) radiosurgery; secondary endpoints were to assess early side effects and complications. Methods Ten female patients with TN refractory to pharmacological and/or non-pharmacological treatment received a single dose of 90 Gy with CyberKnife® radiosurgery. Clinical and demographic characteristics were obtained from medical records. The visual analog scale (VAS) was used to assess facial pain before as well as seven, 15, and 30 days after treatment. Friedman test was performed to evaluate pain relief in treated patients. Results All patients responded well to the CK and experienced initial adequate pain relief during the first 30 days (p<0.001). No significant differences (p=0.661) were found between six patients who received CK radiosurgery as the first treatment option and those who underwent other non-pharmacological treatments. One patient was re-irradiated with 75 Gy. Transient facial paresthesia was observed in 3/10 patients without any other complications. Conclusion High-tech CK treatment is safe, non-invasive, fast, with minimal side effects, and effective in achieving short-term pain relief in patients with refractory TN, even in those with multiple previous interventions. Given these results, we recommend evaluating CK radiosurgery as the first-line treatment of choice for trigeminal neuralgia refractory to pharmacological treatment., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2023, Pérez Fernández et al.)- Published
- 2023
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20. You plan, you test and then it happens: Lessons learned from the Schneider warehouse tornado recovery.
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Marotz, William T.
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INCIDENT command systems ,EMERGENCY management ,LEADERSHIP ,TEAMS in the workplace ,CONTINGENCY theory (Management) - Abstract
This paper is about the experience gained and lessons learned while dealing with the long-term recovery of Schneider's Port Logistics Division following extensive damage to three warehouse/office facilities in Savannah, GA on 25th April, 2015. This paper will provide insight into how the initial assessments were handled, how the skill sets needed by the response teams were determined, and vrhat further actions were triggered as more detailed information was received and assessed by the leadership team. This paper will also provide information as to how closely the company followed its existing contingency and disaster recovery plans, as well as where those plans fell short and where it was necessary to make adjustments as the recovery progressed. [ABSTRACT FROM AUTHOR]
- Published
- 2016
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21. Short-term response of soil CH4 flux to simulated precipitation in a winter wheat field on the Loess Plateau, Northwest China.
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LIU Quan-quan, WANG Jun, CHEN Rong-rong, LIU Wen-zhao, and Sainju, Upendra M.
- Abstract
To understand the short-term response of soil CH
4 flux to different precipitation events in a winter wheat field on the Loess Plateau, we conducted precipitation simulation experiments during winter wheat jointing stage and summer fallow period to measure the soil CH4 flux in 0 to 72 h after precipitation simulation of 1 to 32 mm. Results showed that CH4 flux during 0 to 72 h fluctuated at 1 to 8 mm of precipitation application and peaked at 16 and 32 mm. Cumulative CH4 flux after 72 h of precipitation (CH4 -C) increased linearly with the precipitation amount (P) (wheat jointing stage: CH4 -C=2.45P-6.09, R2 =0.92, P<0.01; summer fallow: CH4 -C=2.43P-4.73, R2 =0.91, P<0.01). Statistical analysis showed that CH4 flux was also correlated with soil water content and microbial biomass carbon but not with soil temperature. In the long run, small precipitation events (1-8 mm) could enhance the intensity of soil CH4 sink and such promoting effect would be weakened with further increase in precipitation amount. However, large precipitation events (≥16 mm) could change the soil function from CH4 sink to source by stimulating the activity of soil methanogens during short-term periods. [ABSTRACT FROM AUTHOR]- Published
- 2015
22. Differential responses of short-term soil respiration dynamics to the experimental addition of nitrogen and water in the temperate semi-arid steppe of Inner Mongolia, China.
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Qi, Yuchun, Liu, Xinchao, Dong, Yunshe, Peng, Qin, He, Yating, Sun, Liangjie, Jia, Junqiang, and Cao, Congcong
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- *
SOIL respiration , *WATER , *RAINFALL simulators , *NITROGEN in soils , *ARID regions , *EMISSIONS (Air pollution) - Abstract
We examined the effects of simulated rainfall and increasing N supply of different levels on CO 2 pulse emission from typical Inner Mongolian steppe soil using the static opaque chamber technique, respectively in a dry June and a rainy August. The treatments included NH 4 NO 3 additions at rates of 0, 5, 10, and 20 g N/(m 2 ·year) with or without water. Immediately after the experimental simulated rainfall events, the CO 2 effluxes in the watering plots without N addition (WCK) increased greatly and reached the maximum value at 2 hr. However, the efflux level reverted to the background level within 48 hr. The cumulative CO 2 effluxes in the soil rang ed from 5.60 to 6.49 g C/m 2 over 48 hr after a single water application, thus showing an increase of approximately 148.64% and 48.36% in the effluxes during both observation periods. By contrast, the addition of different N levels without water addition did not result in a significant change in soil respiration in the short term. Two-way ANOVA showed that the effects of the interaction between water and N addition were insignificant in short-term soil CO 2 effluxes in the soil. The cumulative soil CO 2 fluxes of different treatments over 48 hr accounted for approximately 5.34% to 6.91% and 2.36% to 2.93% of annual C emission in both experimental periods. These results stress the need for improving the sampling frequency after rainfall in future studies to ensure more accurate evaluation of the grassland C emission contribution. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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23. Effects of abiotic stressors on lutein production in the green microalga Dunaliella salina.
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Weiqi Fu, Paglia, Giuseppe, Magnúsdóttir, Manuela, Steinarsdóttir, Elín A, Gudmundsson, Steinn, Palsson, Bernhard Ø, Andrésson, Ólafur S., and Brynjólfsson, Sigurður
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- *
ABIOTIC stress , *LUTEIN , *DUNALIELLA salina , *CAROTENOIDS , *MICROALGAE , *REACTIVE oxygen species - Abstract
Background Recent years have witnessed a rising trend in exploring microalgae for valuable carotenoid products as the demand for lutein and many other carotenoids in global markets has increased significantly. In green microalgae lutein is a major carotenoid protecting cellular components from damage incurred by reactive oxygen species under stress conditions. In this study, we investigated the effects of abiotic stressors on lutein accumulation in a strain of the marine microalga D. salina which had been selected for growth under stress conditions of combined blue and red lights by adaptive laboratory evolution. Results Nitrate concentration, salinity and light quality were selected as three representative influencing factors and their impact on lutein production in batch cultures of D. salina was evaluated using response surface analysis. D. salina was found to be more tolerant to hyperosmotic stress than to hypo-osmotic stress which caused serious cell damage and death in a high proportion of cells while hyper-osmotic stress increased the average cell size of D. salina only slightly. Two models were developed to explain how lutein productivity depends on the stress factors and for predicting the optimal conditions for lutein productivity. Among the three stress variables for lutein production, stronger interactions were found between nitrate concentration and salinity than between light quality and the other two. The predicted optimal conditions for lutein production were close to the original conditions used for adaptive evolution of D. salina. This suggests that the conditions imposed during adaptive evolution may have selected for the growth optima arrived at. Conclusions This study shows that systematic evaluation of the relationship between abiotic environmental stresses and lutein biosynthesis can help to decipher the key parameters in obtaining high levels of lutein productivity in D. salina. This study may benefit future stress-driven adaptive laboratory evolution experiments and a strategy of applying stress in a stepwise manner can be suggested for a rational design of experiments. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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24. Comparative proteomic analysis of the short-term responses of rice roots and leaves to cadmium
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Lee, Kyunghee, Bae, Dong Won, Kim, Sun Ho, Han, Hay Ju, Liu, Xiaomin, Park, Hyeong Cheol, Lim, Chae Oh, Lee, Sang Yeol, and Chung, Woo Sik
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- *
PROTEOMICS , *RICE , *PLANT roots , *LEAF physiology , *PHYSIOLOGICAL effects of cadmium , *ENVIRONMENTAL toxicology , *GLUTATHIONE , *OXIDATIVE stress , *POLYETHYLENE glycol - Abstract
Abstract: Cadmium (Cd) is a non-essential heavy metal that is recognized as a major environmental pollutant. While Cd responses and toxicities in some plant species have been well established, there are few reports about the effects of short-term exposure to Cd on rice, a model monocotyledonous plant, at the proteome level. To investigate the effect of Cd in rice, we monitored the influence of Cd exposure on root and leaf proteomes. After Cd treatment, root and leaf tissues were separately collected and leaf proteins were fractionated with polyethylene glycol. Differentially regulated proteins were selected after image analysis and identified using MALDI-TOF MS. A total of 36 proteins were up- or down-regulated following Cd treatment. As expected, total glutathione levels were significantly decreased in Cd-treated roots, and approximately half of the up-regulated proteins in roots were involved in responses to oxidative stress. These results suggested that prompt antioxidative responses might be necessary for the reduction of Cd-induced oxidative stress in roots but not in leaves. In addition, RNA gel blot analysis showed that the proteins identified in the proteomic analysis were also differentially regulated at the transcriptional level. Collectively, our study provides insights into the integrated molecular mechanisms of early responses to Cd in rice. [Copyright &y& Elsevier]
- Published
- 2010
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25. Global Strategy for the Diagnosis, Management, and Prevention of Chronic Obstructive Lung Disease: The GOLD Science Committee Report 2019
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Gerard J. Criner, Don D. Sin, Jean Bourbeau, Dave Singh, Fernando J. Martinez, David M.G. Halpin, M. Victorina López Varela, Jørgen Vestbo, Nicolas Roche, Ian D. Pavord, MeiLan K. Han, Alvar Agusti, Maria Montes de Oca, Peter J. Barnes, Peter Frith, Antonio Anzueto, Bartolome R. Celli, Claus Vogelmeier, Robert A. Stockley, Alberto Papi, Jadwiga A. Wedzicha, and Medical Research Council (MRC)
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Lydia Becker Institute ,Respiratory System ,Global Health ,BLOOD EOSINOPHIL COUNT ,Pulmonary Disease, Chronic Obstructive ,0302 clinical medicine ,FLUTICASONE ,Adrenal Cortex Hormones ,Bronchodilator ,PULMONARY-DISEASE ,COPD ,inhaled corticosteroids ,GOLD ,030212 general & internal medicine ,11 Medical and Health Sciences ,Randomized Controlled Trials as Topic ,POST-HOC ANALYSIS ,Obstructive lung disease ,3. Good health ,Bronchodilator Agents ,Disease Progression ,SHORT-TERM RESPONSE ,Life Sciences & Biomedicine ,Algorithms ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,medicine.drug_class ,Socio-culturale ,03 medical and health sciences ,INFLAMMATION ,ResearchInstitutes_Networks_Beacons/lydia_becker_institute_of_immunology_and_inflammation ,Post-hoc analysis ,medicine ,Humans ,Metered Dose Inhalers ,Intensive care medicine ,Science & Technology ,STABILITY ,business.industry ,Therapeutic effect ,Precision medicine ,medicine.disease ,Biomarker (cell) ,Clinical trial ,EXACERBATIONS ,030228 respiratory system ,SPUTUM-EOSINOPHILIA ,business - Abstract
Precision medicine is a patient-specific approach that integrates all relevant clinical, genetic and biological information in order to optimise the therapeutic benefit relative to the possibility of side-effects for each individual. Recent clinical trials have shown that higher blood eosinophil counts are associated with a greater efficacy of inhaled corticosteroids (ICSs) in chronic obstructive pulmonary disease (COPD) patients. Blood eosinophil counts are a biomarker with potential to be used in clinical practice, to help target ICS treatment with more precision in COPD patients with a history of exacerbations despite appropriate bronchodilator treatment.The Global Initiative for Chronic Obstructive Lung Disease (GOLD) 2017 pharmacological treatment algorithms, based on the ABCD assessment, can be applied relatively easily to treatment-naive individuals at initial presentation. However, their use is more problematic during follow-up in patients who are already on maintenance treatment. There is a need for a different system to guide COPD pharmacological management during follow-up.Recent large randomised controlled trials have provided important new information concerning the therapeutic effects of ICSs and long-acting bronchodilators on exacerbations. The new evidence regarding blood eosinophils and inhaled treatments, and the need to distinguish between initial and follow-up pharmacological management, led to changes in the GOLD pharmacological treatment recommendations. This article explains the evidence and rationale for the GOLD 2019 pharmacological treatment recommendations.
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- 2019
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26. Blood eosinophil count thresholds and exacerbations in patients with chronic obstructive pulmonary disease
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Jeong H. Yun, Andrew Lamb, Robert Chase, Dave Singh, Margaret M. Parker, Aabida Saferali, Jørgen Vestbo, Ruth Tal-Singer, Peter J. Castaldi, Edwin K. Silverman, Craig P. Hersh, James D. Crapo, Barry J. Make, Elizabeth A. Regan, Terri Beaty, Ferdouse Begum, Robert Busch, Michael Cho, Dawn L. DeMeo, Adel R. Boueiz, Marilyn G. Foreman, Eitan Halper-Stromberg, Nadia N. Hansel, Megan E. Hardin, Lystra P. Hayden, Jacqueline Hetmanski, Brian D. Hobbs, John E. Hokanson, Nan Laird, Christoph Lange, Sharon M. Lutz, Merry-Lynn McDonald, Dandi Qiao, Stephanie Santorico, Emily S. Wan, Sungho Won, Mustafa Al Qaisi, Harvey O. Coxson, Teresa Gray, MeiLan K. Han, Eric A. Hoffman, Stephen Humphries, Francine L. Jacobson, Philip F. Judy, Ella A. Kazerooni, Alex Kluiber, David A. Lynch, John D. Newell, James C. Ross, Raul San Jose Estepar, Joyce Schroeder, Jered Sieren, Douglas Stinson, Berend C. Stoel, Juerg Tschirren, Edwin Van Beek, Bram van Ginneken, Eva van Rikxoort, George Washko, Carla G. Wilson, Robert Jensen, Douglas Everett, Jim Crooks, Camille Moore, Matt Strand, John Hughes, Gregory Kinney, Katherine Pratte, Kendra A. Young, Jeffrey L. Curtis, Carlos H. Martinez, Perry G. Pernicano, Nicola Hanania, Philip Alapat, Mustafa Atik, Venkata Bandi, Aladin Boriek, Kalpatha Guntupalli, Elizabeth Guy, Arun Nachiappan, Amit Parulekar, Craig Hersh, R. Graham Barr, John Austin, Belinda D'Souza, Gregory D.N. Pearson, Anna Rozenshtein, Byron Thomashow, Neil MacIntyre, H. Page McAdams, Lacey Washington, Charlene McEvoy, Joseph Tashjian, Robert Wise, Robert Brown, Karen Horton, Allison Lambert, Nirupama Putcha, Richard Casaburi, Alessandra Adami, Matthew Budoff, Hans Fischer, Janos Porszasz, Harry Rossiter, William Stringer, Amir Sharafkhaneh, Charlie Lan, Christine Wendt, Brian Bell, Eugene Berkowitz, Gloria Westney, Russell Bowler, Richard Rosiello, David Pace, Gerard Criner, David Ciccolella, Francis Cordova, Chandra Dass, Gilbert D'Alonzo, Parag Desai, Michael Jacobs, Steven Kelsen, Victor Kim, A. James Mamary, Nathaniel Marchetti, Aditi Satti, Kartik Shenoy, Robert M. Steiner, Alex Swift, Irene Swift, Maria Elena Vega-Sanchez, Mark Dransfield, William Bailey, Surya Bhatt, Anand Iyer, Hrudaya Nath, J. Michael Wells, Joe Ramsdell, Paul Friedman, Xavier Soler, Andrew Yen, Alejandro P. Comellas, John Newell, Brad Thompson, Ella Kazerooni, Joanne Billings, Abbie Begnaud, Tadashi Allen, Frank Sciurba, Jessica Bon, Divay Chandra, Carl Fuhrman, Joel Weissfeld, Antonio Anzueto, Sandra Adams, Diego Maselli-Caceres, Mario E. Ruiz, Y. Ivanov, K. Kostov, J. Bourbeau, M. Fitzgerald, P. Hernandez, K. Killian, R. Levy, F. Maltais, D. O'Donnell, J. Krepelka, J. Vestbo, E. Wouters, D. Quinn, P. Bakke, M. Kosnik, A. Agusti, J. Sauleda, P. de Mallorca, Y. Feschenko, V. Gavrisyuk, L. Yashina Kiev, N. Monogarova, P. Calverley, D. Lomas, W. MacNee, D. Singh, J. Wedzicha, A. Anzueto, S. Braman, R. Casaburi, B. Celli, G. Giessel, M. Gotfried, G. Greenwald, N. Hanania, D. Mahler, B. Make, S. Rennard, C. Rochester, P. Scanlon, D. Schuller, F. Sciurba, A. Sharafkhaneh, T. Siler, E. Silverman, A. Wanner, R. Wise, R. ZuWallack, H. Coxson, C. Crim, L. Edwards, R. Tal Singer, J. Yates, B. Miller, R. Tal-Singer, RS: NUTRIM - R3 - Respiratory & Age-related Health, Pulmonologie, and MUMC+: MA Longziekten (3)
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Male ,Exacerbation ,Allergy ,AIRWAY INFLAMMATION ,INHALED CORTICOSTEROIDS ,Rate ratio ,Leukocyte Count ,0302 clinical medicine ,exacerbation ,CLINICAL CHARACTERISTICS ,Immunology and Allergy ,030212 general & internal medicine ,Longitudinal Studies ,Lung ,COPD ,medicine.diagnostic_test ,Chronic obstructive pulmonary disease ,Complete blood count ,Middle Aged ,RANDOMIZED CONTROLLED-TRIAL ,Observational Studies as Topic ,medicine.anatomical_structure ,Disease Progression ,Respiratory ,Female ,SHORT-TERM RESPONSE ,medicine.medical_specialty ,Chronic Obstructive ,Chronic Obstructive Pulmonary Disease ,Immunology ,Pulmonary Disease ,03 medical and health sciences ,FEV1/FVC ratio ,Clinical Research ,Internal medicine ,White blood cell ,medicine ,Humans ,eosinophil ,Asthma ,Aged ,business.industry ,COPDGene and ECLIPSE Investigators ,Eosinophil ,asthma ,medicine.disease ,Eosinophils ,030228 respiratory system ,SPUTUM-EOSINOPHILIA ,OVERLAP SYNDROME ,business ,COPENHAGEN GENERAL-POPULATION - Abstract
BACKGROUND:Eosinophilic airway inflammation in patients with chronic obstructive pulmonary disease (COPD) is associated with exacerbations and responsivity to steroids, suggesting potential shared mechanisms with eosinophilic asthma. However, there is no consistent blood eosinophil count that has been used to define the increased exacerbation risk. OBJECTIVE:We sought to investigate blood eosinophil counts associated with exacerbation risk in patients with COPD. METHODS:Blood eosinophil counts and exacerbation risk were analyzed in patients with moderate-to-severe COPD by using 2 independent studies of former and current smokers with longitudinal data. The Genetic Epidemiology of COPD (COPDGene) study was analyzed for discovery (n=1,553), and the Evaluation of COPD Longitudinally to Identify Predictive Surrogate Endpoints (ECLIPSE) study was analyzed for validation (n=1,895). Asubset of the ECLIPSE study subjects were used to assess the stability of blood eosinophil counts over time. RESULTS:COPD exacerbation risk increased with higher eosinophil counts. An eosinophil count threshold of 300cells/μL or greater showed adjusted incidence rate ratios for exacerbations of 1.32 in the COPDGene study (95% CI, 1.10-1.63). The cutoff of 300cells/μL or greater was validated for prospective risk of exacerbation in the ECLIPSE study, with adjusted incidence rate ratios of 1.22 (95% CI, 1.06-1.41) using 3-year follow-up data. Stratified analysis confirmed that the increased exacerbation risk associated with an eosinophil count of 300cells/μL or greater was driven by subjects with a history of frequent exacerbations in both the COPDGene and ECLIPSE studies. CONCLUSIONS:Patients with moderate-to-severe COPD and blood eosinophil counts of 300cells/μL or greater had an increased risk exacerbations in the COPDGene study, which was prospectively validated in the ECLIPSE study.
- Published
- 2018
27. Transcriptome profiling of short-term response to chilling stress in tolerant and sensitive Oryza sativa ssp. Japonica seedlings
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Matteo Buti, Marianna Pasquariello, Domenico Ronga, Justyna Anna Milc, Nicola Pecchioni, Viet The Ho, Chiara Pucciariello, Pierdomenico Perata, and Enrico Francia
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0106 biological sciences ,0301 basic medicine ,RNA-Seq ,Oryza sativa ,Quantitative trait locus ,01 natural sciences ,Japonica ,03 medical and health sciences ,Gene Expression Regulation, Plant ,Genetics ,Cultivar ,Gene ,Plant Proteins ,biology ,Cold-Shock Response ,Chilling tolerance ,Differentially expressed genes ,Short-term response ,fungi ,food and beverages ,Oryza ,General Medicine ,biology.organism_classification ,Phenotype ,030104 developmental biology ,Seedling ,Transcriptome ,010606 plant biology & botany - Abstract
Low temperature is a major factor limiting rice growth and yield, and seedling is one of the developmental stages at which sensitivity to chilling stress is higher. Tolerance to chilling is a complex quantitative trait, so one of the most effective approaches to identify genes and pathways involved is to compare the stress-induced expression changes between tolerant and sensitive genotypes. Phenotypic responses to chilling of 13 Japonica cultivars were evaluated, and Thaibonnet and Volano were selected as sensitive and tolerant genotypes, respectively. To thoroughly profile the short-term response of the two cultivars to chilling, RNA-Seq was performed on Thaibonnet and Volano seedlings after 0 (not stressed), 2, and 10 h at 10 °C. Differential expression analysis revealed that the ICE-DREB1/CBF pathway plays a primary role in chilling tolerance, mainly due to some important transcription factors involved (some of which had never been reported before). Moreover, the expression trends of some genes that were radically different between Thaibonnet and Volano (i.e., calcium-dependent protein kinases OsCDPK21 and OsCDPK23, cytochrome P450 monooxygenase CYP76M8, etc.) suggest their involvement in low temperature tolerance too. Density of differentially expressed genes along rice genome was determined and linked to the position of known QTLs: remarkable co-locations were reported, delivering an overview of genomic regions determinant for low temperature response at seedling stage. Our study contributes to a better understanding of the molecular mechanisms underlying rice response to chilling and provides a solid background for development of low temperature-tolerant germplasm.
- Published
- 2018
28. American Thoracic Society/National Heart, Lung, and Blood Institute Asthma-Chronic Obstructive Pulmonary Disease Overlap Workshop Report
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Monica Kraft, Christopher E. Brightling, Michael J. Holtzman, Prescott G. Woodruff, George R. Washko, Richard C. Boucher, Fernando D. Martinez, Helen K. Reddel, MeiLan K. Han, David A. Lynch, Sally E. Wenzel, Stephanie A. Christenson, Antonello Punturieri, Maarten van den Berge, Michelle Freemer, Don D. Sin, Robert A. Wise, Esteban G. Burchard, and Groningen Research Institute for Asthma and COPD (GRIAC)
- Subjects
Respiratory System ,RESPIRATORY SYNCYTIAL VIRUS ,COPD PHENOTYPES ,Critical Care and Intensive Care Medicine ,Medical and Health Sciences ,law.invention ,AIR-FLOW OBSTRUCTION ,Pulmonary Disease, Chronic Obstructive ,0302 clinical medicine ,Randomized controlled trial ,law ,RESEARCH-PROGRAM ,and Blood Institute (U.S.) ,030212 general & internal medicine ,Lung ,Societies, Medical ,COPD ,Productive Cough ,RANDOMIZED CONTROLLED-TRIAL ,medicine.anatomical_structure ,Bronchial hyperresponsiveness ,ATS/NHLBI Workshop ,BRONCHIAL HYPERRESPONSIVENESS ,Respiratory ,SHORT-TERM RESPONSE ,Pulmonary and Respiratory Medicine ,Diagnostic Imaging ,medicine.medical_specialty ,Chronic Obstructive ,Chronic Obstructive Pulmonary Disease ,Pulmonary disease ,chronic obstructive pulmonary disease ,Pulmonary Disease ,03 medical and health sciences ,INFLAMMATION ,Clinical Research ,Medical ,medicine ,overlap ,Intensive care medicine ,Asthma ,business.industry ,National Heart ,asthma ,medicine.disease ,United States ,respiratory tract diseases ,Asthma chronic ,EXACERBATIONS ,030228 respiratory system ,SPUTUM-EOSINOPHILIA ,National Heart, Lung, and Blood Institute (U.S.) ,business ,Societies - Abstract
Asthma and chronic obstructive pulmonary disease (COPD) are highly prevalent chronic obstructive lung diseases with an associated high burden of disease. Asthma, which is often allergic in origin, frequently begins in infancy or childhood with variable airflow obstruction and intermittent wheezing, cough, and dyspnea. Patients with COPD, in contrast, are usually current or former smokers who present after the age of 40 years with symptoms (often persistent) including dyspnea and a productive cough. On the basis of age and smoking history, it is often easy to distinguish between asthma and COPD. However, some patients have features compatible with both diseases. Because clinical studies typically exclude these patients, their underlying disease mechanisms and appropriate treatment remain largely uncertain. To explore the status of and opportunities for research in this area, the NHLBI, in partnership with the American Thoracic Society, convened a workshop of investigators in San Francisco, California on May 14, 2016. At the workshop, current understanding of asthma-COPD overlap was discussed among clinicians, pathologists, radiologists, epidemiologists, and investigators with expertise in asthma and COPD. They considered knowledge gaps in our understanding of asthma-COPD overlap and identified strategies and research priorities that will advance its understanding. This report summarizes those discussions.
- Published
- 2017
29. Proteomic analysis of bronchoalveolar lavage fluid in rat exposed to TiO2 nanostructured aerosol by inhalation
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Alain Le Faou, Frédéric Cosnier, Laurent Gaté, Bertrand H. Rihn, Lori A. Kohlstaedt, Laëtitia Chézeau, Institut national de recherche et de sécurité (Vandoeuvre lès Nancy) (INRS ( Vandoeuvre lès Nancy)), Cibles thérapeutiques, formulation et expertise pré-clinique du médicament (CITHEFOR), Université de Lorraine (UL), Berkeley California Institute for Quantitative Biosciences [Berkeley], University of California, Institut Jean Lamour (IJL), and Université de Lorraine (UL)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
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0301 basic medicine ,Lung inflammation ,Cytoskeleton organization ,[SDV]Life Sciences [q-bio] ,Biophysics ,Protein expression profile ,Proteomics ,Biochemistry ,03 medical and health sciences ,medicine ,[CHIM]Chemical Sciences ,[PHYS]Physics [physics] ,Proteomic Profile ,Lung ,030102 biochemistry & molecular biology ,medicine.diagnostic_test ,Inhalation ,Chemistry ,Short-term response ,NETosis ,Neutrophil extracellular traps ,Molecular biology ,030104 developmental biology ,Bronchoalveolar lavage ,Secretory protein ,medicine.anatomical_structure ,Long-term response ,Titanium dioxide - Abstract
The pulmonary toxicological properties of inhaled titanium dioxide were studied using bronchoalveolar lavage fluid (BALF) cytology and proteomics analyses. Fischer 344 rats were exposed to 10 mg/m3 of TiO2 nanostructured aerosol by nose-only inhalation for 6 h/day, 5 days/week for 4 weeks. Lung samples were collected up to 180 post-exposure days. As previously described, cytological analyses of BALF showed a strong inflammatory response up to 3 post-exposure days, which persisted however, at a lower intensity up to 180 days. In addition, using Multidimensional Protein Identification Technology (MudPIT), we identified a total of 107, 50 and 45 proteins (UniprotKB identifiers) differentially expressed in exposed rats immediately, 3 and 180 days after the end of exposure respectively. Increased levels of inflammatory proteins, members of proteasome, various histones, proteins involved in cytoskeleton organization, were noticed up to 3 days (short-term response). Some of these proteins were linked with Neutrophil Extracellular Trap formation (NETosis). Long-term response was also characterized by a persistent altered expression of proteins up to 180 days. Altogether, these results suggest that exposure to low toxicity low solubility nanomaterials such as TiO2 may induce long-term changes in the pulmonary protein expression pattern of which the physio-pathological consequences are unknown. Significance This paper describes in rats, at the pulmonary level, the effects of inhaled nanostructured aerosol of TiO2 on the secreted proteins found in the broncho-alveolar space by comparing the proteomic profile in broncho-alveolar lavage fluid supernatants of control and exposed animals. This work brings new insights about the early events occurring following the end of exposure and suggests the formation of Neutrophil Extracellular Traps (NETosis) that could be interpret as a potential early mechanism of defense against TiO2 nanoparticles. This work also describes the long term effects (180 post-exposure days) of such an exposure and the change in secreted protein expression in the absence of significant histopathological modifications.
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- 2019
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30. Usage of biochar for mitigation of CO2 emission and enhancement of CH4 consumption in forest and orchard Haplic Luvisol (Siltic) soils.
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Walkiewicz, Anna, Kalinichenko, Kira, Kubaczyński, Adam, Brzezińska, Małgorzata, and Bieganowski, Andrzej
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SOIL air , *WATERLOGGING (Soils) , *SOIL respiration , *SOILS , *BIOCHAR , *FOREST soils - Abstract
It has been reported that biochar changes the properties of soil and has beneficial environmental and agrotechnical consequences, especially in degraded lands, including those affected by climate change. We added wood biochar (produced from fir sawdust by pyrolysis at 650 °C) to soil collected from a forest and an adjacent long-term cultivated orchard to test the short-term response of soil respiration and methanotrophy under moisture levels of 100% and 55% water holding capacity (WHC). In the controls of the respiration studies (without biochar), CO 2 emission was generally higher under 55% than 100% WHC in both soils. Biochar application to the forest soil resulted in a significant reduction of the CO 2 emission rate under both WHC levels. This is in contrast with the orchard soil, where the CO 2 emission rate was not significantly changed (55% WHC) or even stimulated (100% WHC). Regardless of the moisture level, the CO 2 emission and O 2 consumption was higher in the forest soil than in orchard soil. In the controls of the methanotrophic study, only slight CH 4 consumption was observed in both the tested water-content conditions. The biochar effect was dependent on the WHC level. Under 100% WHC, CH 4 was completely consumed in both soils with different lag durations. However, under 55% WHC, methanotrophy was stimulated by biochar only in the orchard soil. We concluded that the short-term response of soil respiration and methanotrophy to biochar amendment is influenced by land use and strongly depends on soil moisture conditions. We showed the effectiveness of biochar addition as a method to limit CO 2 emission in non-saturated forest soil, and to increase CH 4 uptake in saturated soils, regardless of land use, which confirms its efficiency in reducing the greenhouse effect. Unlabelled Image • Biochar changes soil gases exchange depending on the moisture level. • CO 2 emission was significantly affected by land use. • CH 4 uptake strongly depended on biochar presence. • In forest soil with biochar under 55%WHC, CO 2 emission decreased significantly. • CH 4 was completely consumed in forest and orchard soil with biochar under 100%WHC. [ABSTRACT FROM AUTHOR]
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- 2020
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31. Gut microbiome response to short-term dietary interventions in reactive hypoglycemia subjects
- Author
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Patrizia Brigidi, Jessica Fiori, Andrea Castagnetti, Clarissa Consolandi, Marco Candela, Simone Rampelli, Matteo Soverini, Silvia Turroni, Paolo Pozzilli, Elena Biagi, Sara Quercia, Marco Severgnini, Francesco Fallucca, Mario Pianesi, DIPARTIMENTO DI CHIMICA 'GIACOMO CIAMICIAN', DIPARTIMENTO DI FARMACIA E BIOTECNOLOGIE, DIPARTIMENTO DI INGEGNERIA CIVILE, CHIMICA, AMBIENTALE E DEI MATERIALI, DIPARTIMENTO DI SCIENZE MEDICHE E CHIRURGICHE, Facolta' di FARMACIA, AREA MIN. 03 - Scienze chimiche, Quercia, Sara, Turroni, Silvia, Fiori, Jessica, Soverini, Matteo, Rampelli, Simone, Biagi, Elena, Castagnetti, Andrea, Consolandi, Clarissa, Severgnini, Marco, Pianesi, Mario, Fallucca, Francesco, Pozzilli, Paolo, Brigidi, Patrizia, and Candela, Marco
- Subjects
Adult ,Male ,0301 basic medicine ,medicine.medical_specialty ,Mediterranean diet ,Endocrinology, Diabetes and Metabolism ,short-chain fatty acids ,gut microbiome ,030209 endocrinology & metabolism ,Gut flora ,digestive system ,Diet, Macrobiotic ,Feces ,03 medical and health sciences ,0302 clinical medicine ,Endocrinology ,reactive hypoglycemia ,Diabetes mellitus ,Internal medicine ,Internal Medicine ,medicine ,Humans ,macrobiotic diet ,short-term response ,Microbiome ,education ,Aged ,education.field_of_study ,Reactive hypoglycemia ,biology ,digestive, oral, and skin physiology ,Metabolic disorder ,Middle Aged ,Macrobiotic diet ,medicine.disease ,biology.organism_classification ,Hypoglycemia ,Gastrointestinal Microbiome ,Bioavailability ,Treatment Outcome ,030104 developmental biology ,Female ,short-chain fatty acid - Abstract
Background Reactive hypoglycemia is a metabolic disorder that provokes severe hypoglycemic episodes after meals. Over recent years, the gut microbiota has been recognized as potential target for the control of metabolic diseases, and the possibility to correct gut microbiota dysbioses through diet, favouring the recovery of metabolic homeostasis, has been considered. Methods We investigate the impact of 2 short-term (3-day) nutritional interventions, based on the macrobiotic Ma-Pi 2 diet and a control Mediterranean diet, on the structure and functionality of the gut microbiota in 12 patients affected by reactive hypoglycemia. The gut microbiota composition was characterized by next-generation sequencing of the V3 to V4 region of the 16S rRNA gene, and the ecosystem functionality was addressed by measuring the faecal concentration of short-chain fatty acids (SCFAs). In order to measure the short-term physiological gut microbiota fluctuation, the microbiomes of 7 healthy people were characterized before and after 3 days of constant diet. Results While no convergence of the gut microbiota compositional profiles was observed, a significant increase in SCFA faecal levels was induced only in the Ma-Pi 2 diet group, suggesting the potential of this diet to support a short-term functional convergence of the gut microbiota, regardless of the individual compositional layout. Conclusions The Ma-Pi 2 diet, with its high fibre load, was effective in increasing the production of SCFAs by the gut microbiota. Because these metabolites are known for their ability to counterbalance the metabolic deregulation in persons with glucose impairment disorders, their increased bioavailability could be of some relevance in reactive hypoglycemia.
- Published
- 2017
- Full Text
- View/download PDF
32. HLA-DPB1 and anti-HBs titer kinetics in hepatitis B booster recipients who completed primary hepatitis B vaccination during infancy
- Author
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Wu, T-W, Chu, C-C, Chang Liao, H-W, Lin, S-K, Ho, T-Y, Lin, M, Lin, H H, and Wang, L-Y
- Published
- 2014
- Full Text
- View/download PDF
33. Inhaled corticosteroids in chronic obstructive pulmonary disease
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FLUTICASONE PROPIONATE ,SMOOTH-MUSCLE-CELLS ,long-acting beta(2)-agonists ,lung function ,RANDOMIZED CONTROLLED-TRIAL ,mortality ,chronic obstructive pulmonary disease ,corticosteroids ,LUNG-FUNCTION ,DOUBLE-BLIND ,CHRONIC-BRONCHITIS ,exacerbations ,EOSINOPHILIC AIRWAY INFLAMMATION ,QUALITY-OF-LIFE ,SPUTUM SOL-PHASE ,SHORT-TERM RESPONSE - Abstract
Importance of the field: Chronic obstructive pulmonary disease (COPD) is a disease characterized by chronic airflow obstruction and a progressive lung function decline. Although widely used, the efficacy of inhaled corticosteroids (ICS) in the treatment of COPD remains a matter of debate.Areas covered in this review: This article reviews the evidence about the effects of inhaled corticosteroids in the treatment of CORD.What the reader will gain: Short-term treatment with ICS improves lung function and quality of life; in addition, several studies with longer follow-up have shown less decline over time in quality of life, and fewer exacerbations. By contrast, long-term studies have been unable to show substantial improvement in the decline of lung function in COPD. Based on these findings, it was concluded that the use of ICS did not influence the natural course of COPD. However, this conclusion has been challenged by two subsequent studies, TORCH and GLUCOLD, which both showed a reduction in lung-function decline over time with the use of ICS. These two studies indicate that ICS might indeed influence the natural course of the disease, at least in a subgroup of COPD patients.Take home message: Further studies are needed to identify which individuals have a favorable short- and long-term response to ICS treatment.
- Published
- 2010
34. Inhaled corticosteroids in chronic obstructive pulmonary disease
- Author
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Eef D. Telenga, Maarten van den Berge, Dirkje S. Postma, Nick H. T. ten Hacken, and Huib A. M. Kerstjens
- Subjects
Chronic bronchitis ,Health Status ,SMOOTH-MUSCLE-CELLS ,Disease ,Severity of Illness Index ,law.invention ,corticosteroids ,Pulmonary Disease, Chronic Obstructive ,DOUBLE-BLIND ,Quality of life ,Randomized controlled trial ,exacerbations ,Adrenal Cortex Hormones ,law ,QUALITY-OF-LIFE ,Medicine ,Pharmacology (medical) ,Anti-Asthmatic Agents ,Randomized Controlled Trials as Topic ,COPD ,Inhalation ,FLUTICASONE PROPIONATE ,Smoking ,General Medicine ,RANDOMIZED CONTROLLED-TRIAL ,Prognosis ,Bronchodilator Agents ,Respiratory Function Tests ,LUNG-FUNCTION ,Treatment Outcome ,CHRONIC-BRONCHITIS ,Anesthesia ,Drug Therapy, Combination ,Bronchial Hyperreactivity ,SHORT-TERM RESPONSE ,medicine.drug ,medicine.medical_specialty ,long-acting beta(2)-agonists ,Drug Administration Schedule ,Fluticasone propionate ,chronic obstructive pulmonary disease ,EOSINOPHILIC AIRWAY INFLAMMATION ,Administration, Inhalation ,Severity of illness ,Humans ,SPUTUM SOL-PHASE ,Intensive care medicine ,Pharmacology ,business.industry ,lung function ,medicine.disease ,mortality ,respiratory tract diseases ,Quality of Life ,business - Abstract
Importance of the field: Chronic obstructive pulmonary disease (COPD) is a disease characterized by chronic airflow obstruction and a progressive lung function decline. Although widely used, the efficacy of inhaled corticosteroids (ICS) in the treatment of COPD remains a matter of debate. Areas covered in this review: This article reviews the evidence about the effects of inhaled corticosteroids in the treatment of CORD. What the reader will gain: Short-term treatment with ICS improves lung function and quality of life; in addition, several studies with longer follow-up have shown less decline over time in quality of life, and fewer exacerbations. By contrast, long-term studies have been unable to show substantial improvement in the decline of lung function in COPD. Based on these findings, it was concluded that the use of ICS did not influence the natural course of COPD. However, this conclusion has been challenged by two subsequent studies, TORCH and GLUCOLD, which both showed a reduction in lung-function decline over time with the use of ICS. These two studies indicate that ICS might indeed influence the natural course of the disease, at least in a subgroup of COPD patients. Take home message: Further studies are needed to identify which individuals have a favorable short- and long-term response to ICS treatment.
- Published
- 2010
- Full Text
- View/download PDF
35. Consumption of Greek yogurt during 12 weeks of high-impact loading exercise increases bone formation in young, adult males - a secondary analysis from a randomized trial.
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Bridge AD, Brown J, Snider H, Ward WE, Roy BD, and Josse AR
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- Adolescent, Adult, Biomarkers blood, Exercise Therapy, Humans, Male, Peptide Fragments blood, Procollagen blood, Resistance Training, Young Adult, Bone Remodeling physiology, Diet, Exercise physiology, Yogurt
- Abstract
Exercise combined with protein and calcium has been shown to benefit bone turnover and bone metabolism. Greek yogurt (GY) contains important nutrients that support bone but has yet to be studied with exercise for this purpose. Thirty untrained, university-aged, males were randomized to 2 groups ( n = 15/group): GY (20 g protein, 208 mg calcium/dose) or placebo pudding (PP; 0 g protein, 0 g calcium/dose) consumed 3×/day on training days and 2×/day on nontraining days. Both groups underwent a resistance/plyometric training program for 12 weeks. Blood was obtained at weeks 0, 1, and 12 to measure procollagen-type-I-N-terminal-propeptide (P1NP) and C-terminal-telopeptide (CTX). After outlier treatment, P1NP increased more over time in GY versus PP ( p = 0.002; interaction). Both groups decreased CTX over time ( p = 0.046; time effect). Following 1 week of training, there was a trend towards a significant increase in CTX in PP with no change in GY ( p = 0.062; interaction). P1NP changed more in GY than PP (baseline to week 12; p = 0.029) as did the P1NP/CTX ratio ( p = 0.015) indicating a greater increase in formation with GY. Thus, GY added to a high-load, high-impact exercise program positively shifted bone turnover towards increased formation while attenuating resorption. GY could be a plausible postexercise food to support bone health in young adult males. Novelty Greek yogurt, with exercise, increased bone formation in young adult males over 12 weeks. After 1 week of an osteogenic exercise program, Greek yogurt tended to blunt a rise in bone resorption seen with the placebo. Greek yogurt is a plausible postexercise food that supports bone.
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- 2020
- Full Text
- View/download PDF
36. Effects of abiotic stressors on lutein production in the green microalga Dunaliella salina
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Steinn Gudmundsson, Manuela Magnusdottir, Ólafur S. Andrésson, Weiqi Fu, Bernhard O. Palsson, Sigurður Brynjólfsson, Giuseppe Paglia, Elín A Steinarsdóttir, Fu, W, Paglia, G, Magnusdottir, M, Steinarsdottir, E, Gudmundsson, S, Palsson, B, Andresson, T, and Brynjolfsson, S
- Subjects
Chlorophyll ,Osmotic stress ,Lutein ,Osmotic shock ,Light ,Physiological ,Bioengineering ,Lutein production ,Stress ,Microbiology ,Applied Microbiology and Biotechnology ,Industrial Biotechnology ,chemistry.chemical_compound ,Bioreactors ,Nitrate ,Response surface methodology ,Stress, Physiological ,Osmotic Pressure ,Botany ,Microalgae ,Carotenoid ,Abiotic component ,chemistry.chemical_classification ,Nitrates ,biology ,Osmotic stre ,Research ,Short-term response ,food and beverages ,biology.organism_classification ,Carotenoids ,Salinity ,chemistry ,Batch Cell Culture Techniques ,Dunaliella salina ,Adaptive laboratory evolution ,Biotechnology - Abstract
Background: Recent years have witnessed a rising trend in exploring microalgae for valuable carotenoid products as the demand for lutein and many other carotenoids in global markets has increased significantly. In green microalgae lutein is a major carotenoid protecting cellular components from damage incurred by reactive oxygen species under stress conditions. In this study, we investigated the effects of abiotic stressors on lutein accumulation in a strain of the marine microalga D. salina which had been selected for growth under stress conditions of combined blue and red lights by adaptive laboratory evolution.Results: Nitrate concentration, salinity and light quality were selected as three representative influencing factors and their impact on lutein production in batch cultures of D. salina was evaluated using response surface analysis. D. salina was found to be more tolerant to hyper-osmotic stress than to hypo-osmotic stress which caused serious cell damage and death in a high proportion of cells while hyper-osmotic stress increased the average cell size of D. salina only slightly. Two models were developed to explain how lutein productivity depends on the stress factors and for predicting the optimal conditions for lutein productivity. Among the three stress variables for lutein production, stronger interactions were found between nitrate concentration and salinity than between light quality and the other two. The predicted optimal conditions for lutein production were close to the original conditions used for adaptive evolution of D. salina. This suggests that the conditions imposed during adaptive evolution may have selected for the growth optima arrived at.Conclusions: This study shows that systematic evaluation of the relationship between abiotic environmental stresses and lutein biosynthesis can help to decipher the key parameters in obtaining high levels of lutein productivity in D. salina. This study may benefit future stress-driven adaptive laboratory evolution experiments and a strategy of applying stress in a step-wise manner can be suggested for a rational design of experiments. © 2014 Fu et al.; licensee BioMed Central Ltd
- Published
- 2014
37. Effects of abiotic stressors on lutein production in the green microalga Dunaliella salina
- Author
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Fu, W, Paglia, G, Magnusdottir, M, Steinarsdottir, E, Gudmundsson, S, Palsson, B, Andresson, T, Brynjolfsson, S, Fu W., Paglia G., Magnusdottir M., Steinarsdottir E. A., Gudmundsson S., Palsson B. T., Andresson T. S., Brynjolfsson S., Fu, W, Paglia, G, Magnusdottir, M, Steinarsdottir, E, Gudmundsson, S, Palsson, B, Andresson, T, Brynjolfsson, S, Fu W., Paglia G., Magnusdottir M., Steinarsdottir E. A., Gudmundsson S., Palsson B. T., Andresson T. S., and Brynjolfsson S.
- Abstract
Background: Recent years have witnessed a rising trend in exploring microalgae for valuable carotenoid products as the demand for lutein and many other carotenoids in global markets has increased significantly. In green microalgae lutein is a major carotenoid protecting cellular components from damage incurred by reactive oxygen species under stress conditions. In this study, we investigated the effects of abiotic stressors on lutein accumulation in a strain of the marine microalga D. salina which had been selected for growth under stress conditions of combined blue and red lights by adaptive laboratory evolution.Results: Nitrate concentration, salinity and light quality were selected as three representative influencing factors and their impact on lutein production in batch cultures of D. salina was evaluated using response surface analysis. D. salina was found to be more tolerant to hyper-osmotic stress than to hypo-osmotic stress which caused serious cell damage and death in a high proportion of cells while hyper-osmotic stress increased the average cell size of D. salina only slightly. Two models were developed to explain how lutein productivity depends on the stress factors and for predicting the optimal conditions for lutein productivity. Among the three stress variables for lutein production, stronger interactions were found between nitrate concentration and salinity than between light quality and the other two. The predicted optimal conditions for lutein production were close to the original conditions used for adaptive evolution of D. salina. This suggests that the conditions imposed during adaptive evolution may have selected for the growth optima arrived at.Conclusions: This study shows that systematic evaluation of the relationship between abiotic environmental stresses and lutein biosynthesis can help to decipher the key parameters in obtaining high levels of lutein productivity in D. salina. This study may benefit future stress-driven adaptive laborator
- Published
- 2014
38. Anti-inflammatory Effects of Combined Budesonide/Formoterol in COPD Exacerbations
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Dirkje S. Postma, Erik Bathoorn, Huib A. M. Kerstjens, Eva Bondesson, Henk F. Kauffman, Martin Boorsma, Jeroen J W Liesker, Gerard H. Koëter, Antoon J. M. van Oosterhout, and Groningen Research Institute for Asthma and COPD (GRIAC)
- Subjects
Male ,Budesonide ,Chronic bronchitis ,AIRWAY INFLAMMATION ,Anti-Inflammatory Agents ,Administration, Oral ,INHALED CORTICOSTEROIDS ,Gastroenterology ,Pulmonary Disease, Chronic Obstructive ,Formoterol Fumarate ,Formoterol Inflammation ,COPD ,Chronic obstructive pulmonary disease ,Exacerbation ,Middle Aged ,respiratory system ,RANDOMIZED CONTROLLED-TRIAL ,NEBULIZED BUDESONIDE ,Bronchodilator Agents ,Respiratory Function Tests ,Drug Combinations ,Treatment Outcome ,CHRONIC-BRONCHITIS ,Ethanolamines ,Female ,SHORT-TERM RESPONSE ,medicine.drug ,Pulmonary and Respiratory Medicine ,medicine.medical_specialty ,Prednisolone ,Placebo ,OBSTRUCTIVE PULMONARY-DISEASE ,Double-Blind Method ,Internal medicine ,Administration, Inhalation ,medicine ,Humans ,Aged ,Asthma ,business.industry ,Sputum ,medicine.disease ,Surgery ,respiratory tract diseases ,Eosinophils ,Sputum induction ,Budesonide/formoterol ,SPUTUM-EOSINOPHILIA ,ASTHMA ,ORAL PREDNISOLONE ,Formoterol ,business - Abstract
Systemic corticosteroids and additional short-acting beta 2-agonists are commonly used in exacerbations of chronic obstructive pulmonary disease (COPD). In this double-blind study, the combination of a high-dose inhaled corticosteroid with a rapid-onset long-acting beta 2-agonist was evaluated in the treatment of out-patient COPD exacerbations. The primary aim was to compare 14-day treatment effects of budesonide/formoterol to placebo on sputum eosinophils and, secondarily, on other indices of inflammation, forced expiratory flow in one second (FEV(1)), symptoms, health status, and adverse events. Forty-five patients not using steroids (37 male, 21/24 currentlex smoker, median packyears 38, age 65 years, FEV(1) 61% predicted), experiencing a COPD exacerbation, were treated at home with budesonide/formoterol (320/9 mu g 4 times daily), prednisolone (30 mg daily), or placebo for 14 days. Sputum eosinophils were significantly reduced by budesonide/formoterol (-57%) compared to placebo (+24%) (p = 0.01). Budesonide/formoterol reduced total symptom scores significantly (p = 0.01) compared to placebo. The increase in FEV(1) by 2 weeks of treatment with budesonide/formoterol (125 ml) was not significantly different from that of placebo (43 ml) (p = 0.07). Budesonide/formoterol treatment did not suppress morning serum cortisol compared to placebo (-16 %; p = 0.50). In conclusion, budesonide/formoterol reduces sputum eosinophils and improves symptoms in the treatment of out-patient COPD exacerbations.
- Published
- 2008
39. Pulmonary biomarkers in chronic obstructive pulmonary disease
- Author
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Peter J. Barnes, Sergei A. Kharitonov, Clive P. Page, Marina Saetta, Helgo Magnussen, Badrul A. Chowdhury, Dirkje S. Postma, Faculteit Medische Wetenschappen/UMCG, and Groningen Research Institute for Asthma and COPD (GRIAC)
- Subjects
Pulmonary and Respiratory Medicine ,Chronic bronchitis ,medicine.medical_specialty ,bronchial biopsy ,Bronchi ,Disease ,EXHALED BREATH CONDENSATE ,Critical Care and Intensive Care Medicine ,condensate ,AIR-FLOW OBSTRUCTION ,Pulmonary Disease, Chronic Obstructive ,Intensive care ,bronchoalveolar lavage ,Humans ,Medicine ,Exhaled breath condensate ,OXIDATIVE STRESS ,Intensive care medicine ,COPD ,medicine.diagnostic_test ,business.industry ,Respiratory disease ,Sputum ,RANDOMIZED CONTROLLED-TRIAL ,NITRIC-OXIDE MEASUREMENTS ,SMOKING-CESSATION ,medicine.disease ,SPUTUM INFLAMMATORY MARKERS ,CHRONIC-BRONCHITIS ,Bronchoalveolar lavage ,exhaled breath ,induced sputum ,Breath Tests ,Exhaled nitric oxide ,exhaled nitric oxide ,Inflammation Mediators ,SHORT-TERM RESPONSE ,business ,Bronchoalveolar Lavage Fluid ,Biomarkers - Abstract
There has been increasing interest in using pulmonary biomarkers to understand and monitor the inflammation in the respiratory tract of patients with chronic obstructive pulmonary disease (COPD). In this Pulmonary Perspective we discuss the merits of the various approaches by reviewing the current literature on pulmonary biomarkers in COPD and underscore the need for more systematic studies in the future. Bronchial biopsies and bronchoalveolar lavage provide valuable information about inflammatory cells and mediators, but are invasive, so that repeated measurements have to be very limited in assessing any interventions. Induced sputum has provided considerable information about the inflammatory process, including mediators and proteinases in COPD, but selectively samples proximal airways and may not closely reflect distal inflammatory processes. Exhaled gases and breath condensate are noninvasive procedures, so repeated measurements are possible, but for some assays the variability is relatively high. There is relatively little information about how any of these biomarkers relate to other clinical outcomes, such as progression of the disease, severity of disease, clinical subtypes, or response to therapy. More information is also needed about the variability in these measurements. In the future, pulmonary biomarkers may be useful in predicting disease progression, indicating disease instability, and in predicting response to current therapies and novel therapies, many of which are now in development.
- Published
- 2006
40. Evaluation of short- and long-term response to treatment in GIMEMA protocol for acute myeloid leukaemia
- Author
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Michalis Zervakis, Ilaria Ardoino, Georgios C. Manikis, Antonina Starita, Paulo J. G. Lisboa, Marco Vignetti, Federico Ambrogi, Elia Biganzoli, Paola Fazi, Patrizia Boracchi, S. Iacobelli, and Michail G. Kounelakis
- Subjects
Oncology ,medicine.medical_specialty ,SVM,Support Vector Machines ,Biomedical Engineering ,Competing risks ,Basic medical sciences,Basic sciences, Medical,Biomedical sciences,Health sciences,Preclinical sciences,Sciences, Medical,medical sciences,basic medical sciences,basic sciences medical,biomedical sciences,health sciences,preclinical sciences,sciences medical ,Modelling ,Settore MED/01 - Statistica Medica ,Clinical markers ,Haematologic malignancy ,Internal medicine ,hemic and lymphatic diseases ,LAM-99P GIMEMA Protocol ,medicine ,Clinical endpoint ,Survival analysis ,Protocol (science) ,Biological markers ,business.industry ,Complete remission ,Short-term response ,Long term response ,AML,Acute Myeloid Leukaemia ,Multinomial logistic regression ,Long-term response ,Immunology ,Leukaemia treatment ,Myeloid leukaemia ,business - Abstract
Summarization: Acute Myeloid Leukaemia (AML) is a haematologic malignancy. Despite of improvements in prognosis it is still a severe disease and only a minority of patients are cured. Recently, insights into specific cytogenetics and biological aberration involved in the leukaemogenesis process are the target of research. LAM-99P GIMEMA Protocol identifies treatment guidelines for AML in adults. A methodological approach is proposed, compounding different modelling techniques, to assess the prognostic relevance of clinical as well as biological markers with regard to clinical endpoint, such as the achievement of Complete Remission in the short-term and long-term survival taking into account competing risks. Παρουσιάστηκε στο: International Journal of Biomedical Engineering and Technology
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