Publications by authors named "Vaca J"

Article Synopsis
  • - The Bacillus cereus group produces a variety of antimicrobial compounds that help protect plants from pathogens and pests, while enhancing growth and stress tolerance.
  • - These bacteria also play a crucial role in bioremediation, breaking down harmful environmental pollutants and producing beneficial enzymes, yet they can cause food poisoning due to enterotoxin production.
  • - Overall, B. cereus has diverse applications in agriculture, industry, and medicine, including the development of eco-friendly materials and potential health benefits like cancer prevention through selenium nanoparticle production.
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One of the most talked about issues of the 21st century is climate change, as it affects not just our health but also forestry, agriculture, biodiversity, the ecosystem, and the energy supply. Greenhouse gases are the primary cause of climate change, having dramatic effects on the environment. Climate change has an impact on the function and composition of the terrestrial microbial community both directly and indirectly.

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Article Synopsis
  • * The study analyzed 40 unique isolates from clinical samples between 2018 and 2019, identifying bacteria using the API 20A system and measuring antibiotic effectiveness with Sensititre anaerobe MIC plates.
  • * Findings revealed 11 isolates resistant to metronidazole, with only 2 carrying the significant resistance gene, and 5 imipenem-resistant isolates, suggesting a need for ongoing monitoring and understanding of resistance mechanisms to improve treatment options.
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Article Synopsis
  • Antibiotic-resistant bacteria are becoming a major global problem, highlighting the need for new antibiotics.
  • Bacillus species, especially within the B. cereus group, produce bacteriocins—small peptides with strong antibacterial properties that are stable under various conditions.
  • This study isolated and compared five bacteriocins from three related Bacillus species and found significant differences in their molecular mass and antibacterial effectiveness, reinforcing that bacteriocins can be linked to their specific Bacillus species of origin.
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Although people other than mothers participate in feeding, few interventions include non-maternal caregivers, especially those promoting healthy development among children aged 0-3 years. Understanding the role and influence of non-maternal caregivers is essential for the development and effectiveness of early childhood feeding interventions; yet, no reviews have examined non-maternal caregivers of children aged 0-3 years. This study assessed what is known about non-maternal caregivers' feeding of children aged 0-3.

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Background: Currently antibiotic resistant pathogenic bacteria are emerging as an important health problem worldwide. The search for new compounds with antibiotic characteristics is the most promising alternative. Bacteriocins are natural compounds that are inhibitory against pathogens, and Bacillus species are the major producers of these compounds, showing antimicrobial activity against clinically important bacteria.

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Six known indole alkaloid derivatives have been isolated for the first time from Bacillus thuringiensis and Bacillus velezensis strains, all of them as building blocks for the synthesis of larger natural products. Their structure was elucidated by a complete spectroscopy. Their biological activities were tested against some Gram-positive and Gram-negative bacteria and three phytopathogenic fungi which cause diseases in important crops, such as Moniliophthora roreri, the causal agent of cacao disease.

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The presence and distribution of Scirtothrips dorsalis was reported in Colombia in the Andean, Caribbean, and Orinoquia regions, from 0 to 1,200 meters of altitude (MASL) in the warm climate zone, with less than 2,000 mm rainfall per year and a temperature above 24°C, which corresponds to the tropical dry forest life zone (TDF). Larvae and adults of S. dorsalis were found on 13 plant species belonging to 12 genera in 12 families, of 181 plant species sampled from 129 genera in 47 families sampled.

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Avascular necrosis of the pisiform bone is a very rare condition. This paper reports a case and discusses this pathology and its diagnosis.

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Background: Between April 2001 and March 2004, the Directly Observed Therapy-Short course (DOTS) program was successfully implemented by the National Tuberculosis control program, with assistance from the Canadian Lung Association, in three provinces of Ecuador, where 52% of the population of the country reside.

Methods: Markov modelling was used to project TB-related morbidity, mortality and costs if the former TB control program (status quo) had continued or if the newly expanded DOTS program is maintained over 20 years. Extensive sensitivity analyses were used to determine the effect on projected outcomes of varying key assumptions.

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Cultural variations in the associations of 12 body sensations with 7 emotions were studied in 2 rural samples from northern Mexico (n = 61) and Java, Indonesia (n = 99), with low exposure to Western influences and in 3 university student samples from Belgium (n = 75), Indonesia (n = 85), and Mexico (n = 123). Both parametric and nonparametric analyses suggest that findings from previous studies with only student samples (K. R.

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Background: DOTS is widely accepted as the most cost-effective strategy for tuberculosis (TB) control. However, there is little published information regarding methods for implementation in middle-income countries.

Methods: Over 3 years, the Canadian Lung Association assisted the Ecuadorian TB programme to implement DOTS for over half the nation's total population.

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After introduction of surgical anesthesia with general agents such as ether and chloroform, a large number of deaths due to anesthetic toxicity were reported. With the aim to reduce toxicity several types of mixtures were devised. One of the most important was the association of opioids and scopolamine.

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Clinical and histological features of a case of the so-called idiopathic calcinosis of the scrotum in a 22 year-old otherwise healthy man are presented. In a first biopsy we did not observe any evidence of squamous epithelial lining around calcified masses, but in a second one we observed some intact epidermoid cysts and granulomas of foreign-body type around keratinous material. These findings suggest that scrotal calcinosis is not idiopathic, but rather the end stage of dystrophic calcification of scrotal epidermoid cysts.

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Reports on rhinoplastic sequelae are infrequent. Reported incidence rates vary from 5% to 12%. The authors have an overall rate of 8%, with 6.

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