Infections with protozoans, mainly due to immunodeficiency, are common all over the world. However, pulmonary infections with protozoans are less frequent. Lophomonassp. is a flagellated protozoan that lives in the gastrointestinal tract of some species of cockroaches. Some cases, that show the presence of Lophomonas in populations whose lungs are affected, have been reported. Case report: The medical records of nine patients were studied: seven adult patients and two pediatric patients who were in the Intensive Care Unit (ICU) and in the Neonatal Intensive Care Unit (NICU), respectively. The samples were taken from tracheal aspirations and bronchoalveolar lavages. The patients’ ages were between 9 and 95 years, and 60% of them were male. Some of the patients were healthy, a priori, and others were immunosuppressed. There were found three patients with neoplasia, two patients with diabetes mellitus and four patients with no systemic pathologies. It is concluded that Lophomonas sp. is a protozoa parasite which emerges from the upper and lower respiratory tract of hospitalized patients. However, its pathogenic role is still controversial in all cases, that's why it merits further study for its understanding and possible treatment.

Microbial biotechnology employes techniques that rely based on the natural interactions that occur in ecosystems. Bacteria, including rhizobacteria, play an important role in plant growth, providing agricultural crops with an alternative that can mitigate the negative effects of abiotic stress, such as those caused by saline environments. In this study, bacterial isolates were obtained from soil and roots ofProsopis limensis Benthamfrom the department of Lambayeque, Peru. This region has high salinity levels, therefore, the collected samples were used to isolate plant growth-promoting rhizobacteria (PGPR), which were identified through morphological, and physical-biochemical characteristics. These salt tolerant bacteria were screened phosphate solubilization, indole acetic acid, deaminase activity and molecular characterization by 16S rDNA sequencing. Eighteen samples from saline soils of theProsopis limensisplants in the northern coastal desert of San Jose district, Lambayeque, Peru. The bacterial isolates were screened for salt tolerance ranging from 2 to 10%, a total of 78 isolates were found. Isolates 03, 13 and 31 showed maximum salt tolerance at 10%, in vitro ACC production, phosphate solubilization and IAA production. The three isolates were identified by sequencing the amplified 16S rRNA gene and were found to bePseudomonassp. 03 (MW604823),Pseudomonassp. 13 (MW604824) andBordetellasp. 31 (MW604826). These microorganisms promoted the germination of radish plants and increased the germination rates for treatments T2, T3 and T4 by 129, 124 and 118% respectively. The beneficial effects of salt tolerant PGPR isolates isolated from saline environments can be new species, used to overcome the detrimental effects of salt stress on plants. The biochemical response and inoculation of the three isolates prove the potential of using these strains as a source of products that can be employed for the development of new compounds proving their potential as biofertilizers for saline environments.

Las bacterias y los hongos son un riesgo potencial para el material arqueológico y trabajadores de los museos en Lambayeque, Perú. Con el objetivo de cuantificar la microbiología ambiental aislada del museo Tumbas Reales de Sipán, se muestrearon cuatro almacenes, con Agar Nutritivo y Agar Papa Dextrosa, incubándose a 30 °C, en aerobiosis, hasta por 7 días, para bacterias y, hasta por 10 días, para hongos. Se cuantificaron bacterias con un máximo de 2,7x10 4 UFC cm -2 , en las superficies de pisos y paredes; 1,4x10 3 UFC m -3 , en el aire y hongos filamentosos, con un máximo de 7,5x10 4 UFC cm -2 , en las superficies y 9,1x10 4 UFC m -3 , en el aire. Se aislaron e identificaron los géneros de bacterias: Bacillus , Micrococcus , Acinetobacter , Nocardia , Streptococcus , Staphylococcus y Streptomyces y los géneros de hongos filamentosos: Aspergillus , Cladosporium , Circinella , Syncephalastrum , Penicillium , Alternaria , Staphylotrichum , Cercospora , Rhizopus , Cunninghamella , Chrysosporium , Nigrospora , Stachybotrys , Gliocladium y Verticillium .

Contagio y medidas de prevención de SARS-CoV-2 (COVID-19) en prisiones

Caracterización molecular de las variedades de algodón nativo de color en la costa norte del Perú