Currently, brachytherapy is the most commonly used therapeutic approach for uveal melanomas. Surgical resection by means of endoresection or exoresection is an alternative approach. The present report recounts our experience over 15 years in the treatment of uveal melanoma using a combined approach of resection surgery with brachytherapy.
View Article and Find Full Text PDFJ Food Sci Technol
January 2021
Purified enzymes of microbial origin are applied in the beverage industry since decades because of their ability to enhance products and processes with minimal side effects and low costs. Commercial enzymes are widely used during different wine making steps providing a broad range of effects, such as to maximise juice yield, improve aroma compounds, flavour enhancement, colour extraction in red wines, and contribute in the removal of dissolved unwanted colloidal particles and pectin substances during wine stabilization and filtration. This review presents a study of recent advances in the application of commercial enzymes in the wine making of red, white and sweet wines that have been made in essentially the last 13 years (2005-2018).
View Article and Find Full Text PDFObjective: To provide an overview of the status of monitoring and evaluation (M&E) of school feeding across sub-Saharan Africa and to reflect on the experience on strengthening M&E systems to influence policy making in low-income countries.
Design: Literature review on the M&E of school feeding programmes as well as data from World Food Programme surveys.
Setting: Sub-Saharan Africa.
The growth conditions and ochratoxin A (OTA) production of Aspergillus strains were studied in aniseed (Pimpinella anisum L.)-based media. The results showed that methanol/NaHCO3 (50:50, v/v) mixture for extraction and competitive direct ELISA analytical method are capable of detecting low OTA concentrations in this raw material, which were confirmed by HPLC with fluorescence detection (R (2) = 0.
View Article and Find Full Text PDFBackground: School-feeding programs are popular development assistance programs in developing countries but have previously had few sound, empirical analyses of their effectiveness and costs.
Objective: The goals of this study were to provide a realistic estimate of the costs of school feeding and combine these estimates with outcome information to obtain the cost per outcome.
Methods: Cost studies were conducted in three African countries by reviewing school-feeding costs provided by the World Food Programme and interviewing stakeholders in ministries of education and in the community.
Background: The provision of food in and through schools has been used to support the education, health, and nutrition of school-aged children. The monitoring of financial inputs into school health and nutrition programs is critical for a number of reasons, including accountability, transparency, and equity. Furthermore, there is a gap in the evidence on the costs, cost-efficiency, and cost-effectiveness of providing food through schools, particularly in areas of high food insecurity.
View Article and Find Full Text PDFBackground: The problem of low female literacy rates in Africa starts with low primary school enrollment, particularly in areas of high food insecurity. The provision of food in, and through, schools is considered to be one way of enrolling more girls in school, keeping them enrolled, and enhancing their adult well-being and productivity as a result.
Objective: To investigate the effects of provision of food and additional take-home rations in schools on girls' enrollment.
Objectives: This study evaluated the results of a brief 2-day educational training program for Chilean primary care physicians that measured changes in knowledge, attitudes and practice. This World Psychiatric Association (WPA) program was adopted to overcome diagnostic and treatment problems that are found among primary care practitioners.
Methods: 37 primary care physicians from two cities in Chile and 2589 patients participated.
An effective malarial vaccine must contain multiple immunogenic, protection-inducing epitopes able to block and destroy the P. falciparum malaria parasite, the most lethal form of this disease in the world. Our strategy has consisted in using conserved peptides blocking parasite binding to red blood cells; however, these peptides are non-immunogenic and non-protection-inducing.
View Article and Find Full Text PDFBiochem Biophys Res Commun
February 2006
ASC2 structure has been well defined by 1141 NOE experimental restraints. The model consists of five alpha helices. alpha-Helices are connected by short random structure loops.
View Article and Find Full Text PDFBackground: As a consequence of the epidemiological transition in Chile, the nutritional status of the population has changed notoriously.
Aim: To study the changes in the nutritional status of six years-old Chilean children from 1987 to 2003.
Material And Methods: The computer data base of a government institution in charge of the School Lunch Program (JUNAEB) was used.
An anti-malarial vaccine is urgently needed, especially against P. falciparum which causes 2 to 3 million deaths each year, mostly in Sub-Saharan African children. This vaccine should contain molecules from the parasite's different developmental stages due to the parasite's remarkable complexity and genetic variability.
View Article and Find Full Text PDFA persistent high risk human papillomavirus (HR-HPV) infection causes cervical intraepithelial lesions and cervical carcinoma. There is evidence that detecting anti-L1 antibodies could be successfully used for discriminating between cervical lesion patients and women having normal cytology. It was found that peptides 18283 (55PNNNKILVPKVSGLQYRVFR74) and 18294 (284LYIKGSGSTANLASSNYFPT300) from the L1-surface exposed regions were specifically recognised by antibodies from the cervical lesion patient sera.
View Article and Find Full Text PDFPlasmodium falciparum malaria protein peptides were synthesised in the search for more effective routes for inducing a protective immune response against this deadly parasite and this information has been associated with such molecules' three-dimensional structure. These peptides had high red blood cell binding activity and their carboxy- and amino-terminal extremes were elongated for determining their immunogenic and protection-inducing activity against this disease in the Aotus monkey experimental model. 1H-NMR was used for analysing their three-dimensional structure; FAST ELISA, immunofluorescence antibody test, and Western blot were used for identifying their antibody inducing capacity and these previously immunised Aotus were inoculated with a highly infective P.
View Article and Find Full Text PDFThe C-terminal portion of the Plasmodium falciparum blood stage MSP-1 antigen plays a key role in invasion of human erythrocytes. The MSP-1(1282-1301) non-polymorphic 1585 peptide, from the processed MSP-1(42) fragment, is poorly immunogenic and highly alpha-helical [Angew. Chem.
View Article and Find Full Text PDFConserved, high-activity, red blood cell binding malaria peptide 6786, from the HRP-I protein, having a random 3D structure as determined by 1H-NMR, was non-immunogenic and non-protection inducing when used as an immunogen in Aotus monkeys. Modifications made in its amino acid sequence were thus performed to render it immunogenic and protection inducing. Non-immunogenic, non-protection inducing modified peptide 13852 presented A2-H8 and K14-L18 helix fragments.
View Article and Find Full Text PDFAntigen structure modulation represents an approach towards designing subunit malaria vaccines. A specific epitope's alpha carbon stereochemistry, as well as its backbone topochemistry, was assessed for obtaining novel malarial immunogens. A variety of MSP-1(38-61) Plasmodium falciparum epitope pseudopeptides derived were synthesised, based on solid-phase pseudopeptide chemistry strategies; these included all-L, all-D, partially-D substituted, all-Psi-[NH-CO]-Retro, all-Psi-[NH-CO]-Retro-inverso, and Psi-[CH2NH] reduced amide surrogates.
View Article and Find Full Text PDFThe erythrocyte binding antigen EBA-175 is a 175-kDa Plasmodium falciparum protein, which has been shown to be involved in the process of invasion of erythrocytes. It has been found that conserved peptide 1818 belonging to this protein has high red blood cell binding capacity and plays an important role in the invasion process. This peptide is neither immunogenic nor protective.
View Article and Find Full Text PDFImmunogenic and protective peptide sequences are of prime importance in the search for an anti-malarial vaccine. The MSP-1 conserved and semi-conserved sequences have been shown to contain red blood cell (RBC) membrane high affinity binding peptides (HABP). HABP 1513 sequence ((42)GYSLFQKEKMVLNEGTSGTA(61)), from this protein's N-terminal, has been shown to possess a T-epitope; however, it did not induce a humoral immune response or complete protection when evaluated in Aotus monkeys.
View Article and Find Full Text PDFHuman papillomavirus type 16 (HPV-16) represents the major cervical carcinoma associated virus among women, especially in Colombia. It has thus become important to develop reliable inexpensive tests for detecting the presence of this virus. It has been shown that HPV16-E7 oncoprotein structural features have three alpha-helical structures and a loop-like structure.
View Article and Find Full Text PDF1522 is a nonimmunogenic conserved high-activity binding peptide (HABP) belonging to Plasmodium falciparum MSP-1 protein N-terminal fragment. The key amino acids in binding to red blood cells (RBC) were identified and replaced by others having similar mass but different charge. Because conserved HABPs are not antigenic nor immunogenic, immunogenicity and protectivity studies were then conducted on them in the Aotus monkey.
View Article and Find Full Text PDFApical membrane antigen-1 is an integral Plasmodium falciparum malaria parasite membrane protein. High activity binding peptides (HABPs) to human red blood cells (RBCs) have been identified in this protein. One of them (peptide 4313), for which critical binding residues have already been defined, is conserved and nonimmunogenic.
View Article and Find Full Text PDFRev Saude Publica
December 2000
Objective: To test discriminant analysis as a method of turning the information of a routine customer satisfaction survey (CSS) into a more accurate decision-making tool.
Methods: A 7-question, 10-multiple choice, self-applied questionnaire was used to study a sample of patients seen in two outpatient care units in Valparaíso, Chile, one of primary care (n=100) and the other of secondary care (n=249). Two cutting points were considered in the dependent variable (final satisfaction score): satisfied versus unsatisfied, and very satisfied versus all others.