Revista Peruana de Medicina de Experimental y Salud Publica最新文献

Background: Motivation for the study. To contribute to the immunogenic character of soluble and excretion/secretion antigens of Leishmania braziliensis and Leishmania peruviana with the aim of identifying proteins with diagnostic potential.

Background: Main findings. The soluble antigen of Leishmania braziliensis has a sensitivity in the detection of ATL of 87.7%, specificity of 100% and a false positive rate of 20% against sera from patients with Chagas disease and 8.3% with mycosis.

Background: Implications. Immunoblot can improve the resolution capacity in the serological diagnosis of American tegumentary Leishmaniasis, particularly in patients where the length of the disease and the clinical form make difficult the diagnosis by parasitological methods.

Background: This study aimed to determine the performance of Leishmania braziliensis and Leishmania peruviana antigens in the detection of ATL by using serum samples obtained between 2013 - 2016. The obtained soluble and excretion/secretion antigens were transferred to membrane nitrocellulose by immunoblot assay. The evaluation was carried out against sera confirmed for ATL, at a confidence level of 95%, determining that the soluble antigen of Leishmania braziliensis had a sensitivity of 87.7%, specificity of 100% and area under the curve of 0.95; on the other hand, Leishmania peruviana showed values of 92.3%, 95.7% and 0.94, respectively. According to the results, we recommend that the reported immunogenic regions should be characterized and analyzed in order to continue with the development of recombinant and synthetic proteins, aimed at improving the efficiency of the serological diagnosis of the disease.

Background: Motivation for the study. In Peru, the knowledge level of patients about their cardiovascular health is unknown at the first level of care, which receives 85% of the population, and where primary disease prevention activities are carried out.

Background: Main findings. More than 70% of people had an inadequate level of knowledge about their own cardiovascular health.

Background: Implications. Our results highlight the need to improve the education of people on cardiovascular health issues at the first level of care, taking into account that these diseases are increasingly frequent in the population.

Background: This study aimed to determine the level of knowledge about cardiovascular diseases in people in a primary healthcare center (PHCC). A descriptive and cross-sectional study was carried out by surveying people who attended a PHCC in Lima, Peru. A score less than 6 was considered inadequate knowledge. A total of 400 people were surveyed, 66.3% were women and the mean age was 46.8 ± 16.2 years. The average score was 4.52 +/- 1.85. We found that 71% of those surveyed had an inadequate level of knowledge, regardless of age, gender or education level. Our findings show that the level of knowledge about risk factors and cardiovascular disease was inadequate in the primary care population. It is necessary to achieve proper specific education in cardiovascular risk factors in order to reduce the impact of these diseases.

Background: Motivation for the study. Dengue epidemics caused by A. aegypti occur during climatic events in tropical countries such as Peru; however, the feeding behavior of the mosquito usually goes unnoticed.

Background: Main findings. A. aegypti populations in Marcavelica and Querecotillo showed anthropophilic feeding behavior during cyclone Yaku and in the 2023 El Niño. However, populations with different feeding patterns are not ruled out.

Background: Implications. The PCR-RFLP technique of the blood cell cytochrome B gene could be implemented in vector control policies through an entomo-virological surveillance plan.

Objective.: To determine the feeding behavior of Aedes aegypti in dengue outbreaks in two rural areas of Peru during the Yaku cyclone and El Niño phenomenon of 2023.

Material and methods.: Eight blood samples (8 pools) were obtained from the abdomen of 80 Aedes aegypti specimens captured in the rural districts of Querecotillo and Marcavelica during the Yaku cyclone and El Niño dengue outbreaks. DNA was extracted from the analyzed samples, then a PCR was directed at the CytB gene as a genetic marker and the PCR products were enzymatically digested with the restrictases Hae III and Mwo I. The PCR-RFLP products were visualized by agarose gel electrophoresis at 4%.

Results.: DNA was obtained from all samples and a 358 bp amplicon was obtained as a PCR product. Likewise, the only RFLP found in Hae III was from Homo sapiens sapiens (233 and 125 bp). RFLP was not found in Hae III of Gallus gallus and RFLP in Mwo I of Canis familiaris and Mus musculus.

Conclusion.: Aedes aegypti showed conserved anthropophilic feeding behavior in dengue outbreaks in rural areas during the Yaku cyclone and El Niño.

Background: Motivation for the study. It is unclear which variant of Guillain-Barré syndrome is mostly associated with adverse outcomes.

Background: Main findings. Variants had longer time in MV (7.42 days longer), and hospitalization (3.11 days longer). By subgroups, we found that children with the axonal variant had a greater use of MV; whereas, the demyelinating variant was more frequent among adults in MV.

Background: Implications. Our results could be used for the implementation of new public health policies, allowing health personnel to have a better knowledge of the prognosis of each variant and the necessary resources to face future outbreaks.

Objectives.: To determine the requirement and time to mechanical ventilation and Intensive Care Unit (ICU), hospitalization and hospitalization time, death and disability of the axonal variants of Guillain-Barré Syndrome (GBS) in comparison with the acute demyelinating variant in patients of all the ages.

Materials and methods.: The systematic review that included patients with GBS. The exposure variable was the axonal variants and the comparator was acute inflammatory demyelinating polyneuropathy (AIDP). The outcomes were the requirement and time on mechanical ventilation (MV), requirement and time in the ICU, hospitalization time, disability and death. The NewCasttle-Ottawa Scale (NOS) was used to assess risk of bias. A meta-analysis was conducted to calculate mean differences and relative risks (RR) with their 95% confidence intervals (CI) using inverse variances and random effects models.

Results.: Of the 3116 articles found, 46 met the selection criteria. The time on MV was 7.42 days (95% CI: 0.36 to 1.48) and the hospitalization time was 3.11 (95% CI: 0.73 to 5.49) days for the axonal variants. The axonal variants had a RR of 0.47 (95% CI: 0.24 to 0.92) for the requirement of MV in adults, but it was 1.68 (95% CI: 1.25 to 2.25) in children. There was a high statistical heterogeneity.

Conclusions.: Axonal variants showed, on average, longer MV and hospitalization time, overall and by subgroups. A high MV requirement was found for axonal variants in children; it was lower for adults.

Background: Motivation for the study. Rural health facilities could be potential foci of transmission and scenarios of zoonosis during epidemic outbreaks of dengue and other arbovirosis due to the coexistence of mosquito species that feed on different vertebrates.

Background: Main findings. Aedes aegypti feeds on Homo sapiens sapiens. Culex quinquefasciatus feeds on Homo sapiens sapiens and Canis familiaris. Both coexist in health care areas of the Querecotillo health center.

Background: Implications. Molecular techniques should be integrated into vector control to understand feeding patterns in natural conditions and information on probable reservoirs.

Background: This study aimed to determine the coexistence and food sources of adult mosquitoes (Diptera: Culicidae) in a rural health center in Piura, Peru by using a descriptive cross-sectional design. Entomological techniques were used to capture and identify mosquitoes, and molecular biotechnology techniques were used to identify food sources. A total of 793 specimens of the Culex and Aedes genera were found coexisting, 789 (99.5%) were Culex quinquefasciatus, 607 (76.9%) were males and 182 (23.1%) were females. Likewise, 4 (100%) corresponded to Aedes aegypti females. The food sources of Aedes aegypti were Homo sapiens sapiens, and Homo sapiens sapiens and Canis familiaris were the food sources of Culex quinquefasciatus. This study provides evidence that rural health centers could be acting as foci of arbovirosis, with the risk that people who come for different ailments could contract diseases transmitted by C. quinquefasciatus and A. aegypti.

Background: Motivation for the study. In Ecuador, foodborne disease (FBD) incidence rates adjusted for population size have not been estimated, which will serve to identify priority geographic areas.

Background: Main findings. Between 2015-2020, 113,695 cases of FBD were identified, with "other food poisoning" and hepatitis A being most common. The highest incidence rates were found in the Amazon region. There is marked variability by geographic region in the incidence rates during the study period.

Background: Public health implications. It is necessary to optimize the registry system, establish detection and treatment protocols, analyze the causes related to the higher incidence of FBD in the Amazon region, and design a health promotion program focused on preventing contamination and establishing diagnostic and treatment protocols.

Background: In order to describe the incidence rates per 100 000 population of foodborne disease (FBD) cases during the period 2015-2020 in Ecuador, we carried out a secondary analysis of epidemiological surveillance records and population projections from the National Institute of Statistics and Census. A total of 113,695 cases were reported with an incidence of more than 100 cases per 100 000 population (2015-2019). In 2020, the records are considerably lower than those reported in previous years. Most cases were reported as "other food poisoning". The highest incidence rates of FBD were found in the Amazon region. In general, there is a marked annual variability in the incidence of FBD according to the geographic regions of Ecuador. In conclusion, FBD represent a public health problem in Ecuador. Comprehensive preventive strategies should be designed with special emphasis on the Amazon region.

Background: Motivation for the study. The COVID-19 pandemic contributed to the development of mental disorders among medical students, including obsessive-compulsive symptoms. However, evidence on this problem in this population is still limited.

Background: Main findings. One in 10 medical students presented clinically significant obsessive-compulsive symptoms.

Background: Implications. The health crisis has had a negative impact on the mental health of medical students. Therefore, it is crucial to implement future interventions to promote the preservation of their psychological well-being.

Objectives.: To determine the prevalence of obsessive-compulsive symptoms among medical students in Peru during the COVID-19 pandemic and its associated factors.

Materials and methods.: Cross-sectional study in 270 medical students from a Peruvian public university. Participants were recruited through non-probability sampling. Obsessive-compulsive symptoms were assessed with the Yale-Brown Obsessive Compulsive Disorder Scale (Y-BOCS). After the descriptive analysis, Poisson regression with robust variance was used to determine the factors associated with probable obsessive compulsive disorder (probable OCD). The crude (PRc) and adjusted (PRa) prevalence ratios were calculated, along with their respective 95% confidence intervals (95% CI).

Results.: The prevalence of obsessive-compulsive symptoms was 13.3% in medical students. During bivariate analysis, students with probable OCD were younger (p=0.044) and had a lower level of knowledge about COVID-19 (p=0.045). The crude model showed a lower prevalence of probable OCD among those with an adequate level of knowledge compared to those with an inadequate level (PR: 0.52, 95% CI: 0.28 to 0.98). However, after adjusting for other variables, none of the described variables were statistically significant.

Conclusions.: One in ten medical students presented clinically significant obsessive-compulsive symptoms. Implementing future interventions is crucial to preserve the mental well-being of this vulnerable population.

Background: Motivation for the study. There are few studies describing the variation of COVID-19-associated multisystem inflammatory syndrome (MIS-C) in Peru across pandemic waves.

Background: Main findings. Cases of MIS-C decreased during the first three years of the pandemic, with higher frequency in the second wave with clinical features similar to Kawasaki disease.

Background: Implications. MIS-C is a post-infectious complication of SARS-CoV-2. Its diagnostic suspicion is important weeks after peak infections, especially in children who have not yet received COVID-19 vaccines.

Background: This study aimed to describe the characteristics of multisystemic inflammatory syndrome associated with COVID-19 (MIS-C) in the first three years of the pandemic in children in a pediatric hospital in Peru. We conducted an observational, descriptive study with data from 73 patients and described the clinical and laboratory characteristics, treatment and complications according to the wave of the pandemic and whether they had shock. The median age was 6 years, gastrointestinal and mucocutaneous manifestations were frequent in the three waves. Kawasaki disease-like phenotype was present in 34 (46.6%) patients and 21 (28.8%) patients developed shock. The most commonly used treatment was immunoglobulin (95.9%), followed by acetylsalicylic acid (94.5%) and corticosteroid (86.3%). Five (7%) patients had coronary aneurysm and 17 (23.3%) were admitted to the intensive care unit (ICU). Patients with shock had greater laboratorial alteration and need for mechanical ventilation. In conclusion, MIS-C has decreased in the first three years of the pandemic, possibly due to COVID-19 vaccination in children.