ABSTRACT
Botrytis cinerea is the most harmful postharvest disease of table grapes. Among the strategies that can be envisaged for its control, the use of coatings based on natural products is particularly promising. The study presented herein focuses on the assessment of the antagonistic capacity of two Streptomyces species and their culture filtrates against B. cinerea. Firstly, the secondary metabolites were characterized by gas chromatography-mass spectrometry, with N1-(4-hydroxybutyl)-N3-methylguanidine acetate and 2R,3S-9-[1,3,4-trihydroxy-2-butoxymethyl]guanine acetate as the main compounds produced by S. lavendofoliae DSM 40217; and cyclo(leucyloprolyl) and cyclo(phenylalanylprolyl) as the most abundant chemical species for S. rochei DSM 41729. Subsequently, the capacity of S. lavendofoliae DSM 40217 and S. rochei DSM 41729 to inhibit the growth of the pathogen was tested in dual culture plate assays, finding 85-90% inhibition. In agar dilution tests, their culture filtrates resulted in effective concentration values (EC90) in the 246-3013 µg·mL-1 range. Upon the formation of conjugate complexes with chitosan oligomers (COS) to improve solubility and bioavailability, a synergistic behavior was observed, resulting in lower EC90 values, ranging from 201 to 953 µg·mL-1. Ex situ tests carried out on 'Timpson' and 'Red Globe' table grapes using the conjugate complexes as coatings were found to maintain the turgor of the grapes and delay the appearance of the pathogen by 10-15 days at concentrations in the 750-1000 µg·mL-1 range. Hence, the conjugate complexes of COS and the selected Streptomyces spp. culture filtrates may be put forward as promising protection treatments for the sustainable control of gray mold.
ABSTRACT
Treatments that allow plants to better tolerate water deficit become essential, such as the application of chemical priming. In addition, it is essential to use analyses capable of measuring these effects at the biomolecular level, complementing the other physiological evaluations. In view of the above, this study aimed to evaluate the use of attenuated total reflectance-Fourier transform infrared (ATR-FTIR) spectroscopy for analyses of water deficit tolerance in Physalis peruviana plants. For this, samples of leaves, stems and roots of plants subjected to different pretreatments with proline (10 mM and 20 mM), sodium nitroprusside (SNP 25 µM and 50 µM) and H2O as control, aiming at increasing tolerance to water deficit, were evaluated. The chemical agents used attenuated water deficit in P. peruviana plants, influencing phenotypic characterization and spectral analyses. Analysis of FTIR spectra indicates that different functional groups present in leaves, stems and roots were influenced by water deficit and priming treatments. Changes in lipid levels contributed to reducing water losses by increasing the thickness of cuticular wax. Accumulation of proteins and carbohydrates promoted osmoregulation and maintenance of the water status of plants. Thus, water deficit causes changes in the functional groups present in the organs of P. peruviana, and the ATR-FTIR technique is able to detect these biomolecular changes, helping in the selection of priming treatments to increase tolerance to water deficit.
Subject(s)
Physalis , Water , Fourier Analysis , Plant Leaves , Plants , Spectroscopy, Fourier Transform Infrared/methodsSubject(s)
Jejunum , Sutures , Anastomosis, Surgical/adverse effects , Humans , Incidence , Jejunum/surgery , Sutures/adverse effectsABSTRACT
No disponible
Subject(s)
Humans , Female , Middle Aged , Barrett Esophagus/etiology , Barrett Esophagus/pathology , Gastrectomy/adverse effects , Obesity, Morbid/surgery , Bariatric Surgery/adverse effects , Obesity, Morbid/complicationsABSTRACT
The determination of the molecular composition of plant leaves is essential to assist in nutritional management, whether for cultivated or non-cultivated species. In this sense, the study aimed to apply FTIR technique in combination with chemometrics and ROC analysis for the evaluation of changes in compositional of plant leaves of Physalis angulata and Physalis peruviana due to nitrogen fertilization treatments. Both species were grown under different doses of nitrogen (0, 200, 400, and 600 Kg ha-1) and leaf samples were evaluated using ATR-FTIR. Our results demonstrate that the spectra of both species were influenced by the nitrogen doses. The computed band area from the lipid/amide, lipid/carbohydrates, degree of esterification and calcium oxalate shows nitrogen fertilization due to 400 Kg ha-1 of N treatment is more effective for a better quality of yield. 2D correlation spectral analysis (2DCOS) reveals cellulose and pectin begins changes followed by amide of proteins due to nitrogen treatment in P. peruviana samples. The P. angulata plants shows hemicellulose changes predominating followed by proteins and polysaccharides. The obtained principle component analysis plot and loading values show the Physalis species samples distinctly separated from control with protein and carbohydrates are predominant in influencing separation among them. Receiver operation characteristic analysis shows a higher value of area under the curve reflecting better reliability of the experiments carried out. Hierarchical cluster analysis shows closed separation for a similar group on dissimilarity scale. Thus the use of 2DCOS coupled with chemometrics helps to identify changes in the composition of leaves of physalis species due to nitrogen doses, constituting a fast and precise measuring for the suitable management of this fertilization.
Subject(s)
Physalis , Nitrogen , Plant Extracts , Plant Leaves , Reproducibility of ResultsABSTRACT
Due to a Production error Figs. 1 and 2 were omitted from the original article.
ABSTRACT
No disponible
Subject(s)
Humans , History, 18th Century , History, 19th Century , Pancreas/injuries , Pancreatic Neoplasms/diagnosis , Laparotomy/history , Pancreatic Cyst/diagnosis , Digestive System Surgical Procedures/history , Laparotomy/methods , Pancreas/pathology , Jejunostomy/history , Pancreatic Intraductal Neoplasms/epidemiology , Pancreatic Intraductal Neoplasms/history , Papilloma, Intraductal/epidemiology , Papilloma, Intraductal/historySubject(s)
Pancreatic Cyst/history , Cystadenocarcinoma/diagnosis , Cystadenocarcinoma/history , Cystadenocarcinoma/surgery , Cystadenoma/diagnosis , Cystadenoma/history , Cystadenoma/surgery , Drainage , Europe , History, 18th Century , History, 19th Century , History, 20th Century , History, 21st Century , Humans , Laparoscopy/history , Laparoscopy/methods , Pancreatic Cyst/classification , Pancreatic Cyst/diagnosis , Pancreatic Cyst/surgery , Pancreatic Intraductal Neoplasms/diagnosis , Pancreatic Intraductal Neoplasms/history , Pancreatic Intraductal Neoplasms/surgery , Pancreatic Neoplasms/classification , Pancreatic Neoplasms/diagnosis , Pancreatic Neoplasms/history , Pancreatic Neoplasms/surgery , Pancreatic Pseudocyst/diagnosis , Pancreatic Pseudocyst/history , Pancreatic Pseudocyst/surgery , Pancreaticoduodenectomy/history , Pancreaticojejunostomy/historyABSTRACT
No disponible
Subject(s)
Humans , Female , History, Ancient , History, Medieval , History, 16th Century , History, 18th Century , History, 19th Century , History, 20th Century , History, 21st Century , Pancreatic Diseases/history , Endocrinology/history , Gastroenterology/history , Gender Identity , Nobel Prize , Physicians, Women/history , Sister Mary Joseph's Nodule/history , United States , Sexism/history , Research Personnel/historyABSTRACT
PURPOSE: Study objectives are to determine whether quality of life is recovered completely after major injury and to identify determinants associated with a worse quality of life. METHODS: Prospective 12-month follow-up of injured patients admitted to the intensive care unit in a Spanish level 1 trauma centre. The main outcome (quality of life) was measured using the EQ-5D-5L. The relationships between sociodemographic factors, injury severity and location, and quality of life scores were evaluated. Mean comparison analysis (95% confidence interval) was performed with the student "t" test for quantitative variables and with chi-squared for proportion comparison (qualitative variables). A multivariate logistic regression (odds ratio and 95% confidence interval) was performed to identify determinants of each dimension, and a multivariate linear regression (regression coefficient and 95% confidence interval) to identify the determinants of EQus and EQvas. RESULTS: Over a 2-year period, 304 patients who met the inclusion criteria were identified, and 200 patients (65.8%) were finally included. Most of patients suffered blunt trauma (91.5%), 72.5% were men, mean age was 47.8, mean ISS was 15.2. The overall health index (EQvas) improved slightly, but its mean value at 12 months was below the Spanish population norm (P < 0.001). In the multivariate analysis, age ≥ 55, female gender and unskilled employment were risk factors for a lower EQvas. Also in the multivariate analysis, having a severe extremity injury was associated with a lower score on the mobility dimension (OR 6.56 95% CI 2.00, 21.55) while age ≥ 55 years was associated with a lower score on the usual activities dimension (OR 3.52 95% CI 1.17, 10.57). Female gender was the most important factor associated with suffering pain (OR 4.54, 95% CI 2.01, 10.27) and depression/anxiety (OR 4.04, 95% CI 1.88, 8.65). In the univariate and multivariate analyses, female gender, age ≥ 55 years, ISS ≥ 25 and severe extremity injury were associated with a lower EQ utility score (EQus). CONCLUSIONS: The quality of life score improves during the first year after major trauma. However, it does not return to the reference levels for the normal population. Female gender and age ≥ 55 years are statistically significant determinants of poorer EQvas and EQus.
Subject(s)
Disabled Persons/psychology , Intensive Care Units/statistics & numerical data , Survivors/psychology , Trauma Centers , Wounds and Injuries/psychology , Adult , Age Factors , Aged , Disability Evaluation , Female , Follow-Up Studies , Humans , Injury Severity Score , Male , Middle Aged , Outcome Assessment, Health Care , Prospective Studies , Quality of Life , Sex Factors , Sickness Impact Profile , Spain/epidemiology , Wounds and Injuries/epidemiology , Wounds and Injuries/physiopathologyABSTRACT
BACKGROUND: Perforation in the peritoneal cavity during transanal endoscopic microsurgery represents a major challenge. It is usually treated by primary suture, though some authors propose laparoscopic repair with or without ostomy. It is unclear whether perforation increases the risk of tumor dissemination. AIM: The purpose of the study is to assess the safety of primary suture of peritoneal perforation and the long-term risk of dissemination, also, to determine risk factors for perforation and to propose a predictive model for lesions with risk of perforation. METHOD: This is an observational study with prospective data collection at Parc Taulí University Hospital, Sabadell, of patients undergoing transanal surgery with perforation into the peritoneal cavity from June 2004 to September 2017. The main variable is postoperative morbidity and mortality. The long-term follow-up of local recurrence and peritoneal tumor dissemination is described, and a quantitative predictive model for peritoneal cavity perforation is proposed. RESULTS: Forty-five patients out of 686 (6.6%) presented perforation into the peritoneal cavity. Ten patients (22.2%) in the perforation group had morbidity, a rate similar to the non-perforated group. There was no peritoneal dissemination in patients with adenoma or with carcinoma treated with curative intent. In the quantitative predictive model, risk factors for perforation were proximal edge of tumor > 14 cm from anal verge (6 points), size ≥ 6 cm (2), age ≥ 85 years (4), anterior quadrant (3) , and sex (2). Total scores of ≥ 6 points predicted perforation. CONCLUSIONS: Primary suture after peritoneal cavity perforation during transanal surgery is safe and does not increase the risk of recurrence or peritoneal dissemination. Our predictive model provides guidance regarding the risk of perforation and the need to suture the defect after transanal surgery resection.
Subject(s)
Adenocarcinoma/surgery , Adenoma/surgery , Intraoperative Complications/surgery , Peritoneum/injuries , Rectal Neoplasms/surgery , Suture Techniques , Transanal Endoscopic Microsurgery/adverse effects , Adult , Aged , Aged, 80 and over , Clinical Decision Rules , Female , Follow-Up Studies , Humans , Intraoperative Complications/diagnosis , Intraoperative Complications/etiology , Intraoperative Complications/prevention & control , Male , Middle Aged , Peritoneum/surgery , Prognosis , Retrospective Studies , Risk FactorsSubject(s)
Endocrinology/history , Gastroenterology/history , Gender Identity , Pancreatic Diseases/history , Europe , Female , History, 16th Century , History, 18th Century , History, 19th Century , History, 20th Century , History, 21st Century , History, Ancient , History, Medieval , Humans , Nobel Prize , Physicians, Women/history , Research Personnel/history , Sexism/history , Sister Mary Joseph's Nodule/history , United StatesABSTRACT
Desde la antigüedad había llamado la atención el aumento de tamaño y dureza que, en ocasiones, presentaba la estructura abdominal que recibió el nombre de páncreas. Portal en 1803 describió por primera vez los signos clínicos de la pancreatitis crónica. En 1815 Fleischman especuló sobre el posible papel del consumo exagerado de alcohol. Comfort en 1946 acuñó el término «pancreatitis crónica recidivante» y 6 años más tarde refirió lo que se llamaría pancreatitis hereditaria. Zuidema en 1959 definió la pancreatitis tropical y 2 años después Sarles puntualizó sobre otra forma de pancreatitis que en 1995 Yoshida denominaría pancreatitis autoinmune. La pancreatitis del surco era descrita en 1970 por Potet. En 1984 se definió la pancreatitis obstructiva y en 1987 Ammann refirió la pancreatitis idiopática. En este artículo se hace un recuerdo histórico de los pioneros que supieron valorar determinadas características que permitieron definir diferentes formas de pancreatitis crónicas
Since ancient times the increase of size and hardness sometimes presented by the abdominal structure known as the pancreas has attracted attention. Portal was the first to describe the clinical signs of chronic pancreatitis in 1803. In 1815, Fleischman speculated about the potential role of excessive alcohol consumption. Comfort coined the term "chronic relapsing pancreatitis" in 1946 and described hereditary pancreatitis 6 years later. Zuidema defined tropical pancreatitis in 1959 and 2 years later Sarles described another form of pancreatitis to which Yoshida gave the name autoimmune pancreatitis in 1995. Groove pancreatitis was described by Potet in 1970. Obstructive pancreatitis was defined in 1984 and Ammann identified idiopathic pancreatitis 3 years later. This article gives a historical account of the pioneers who developed the knowledge of how to assess the characteristics that allowed the different forms of chronic pancreatitis to be defined
