Objetivo: Describir las características sociodemográficas y determinar los factores asociados a manifestaciones psicológicas de depresión, ansiedad y estrés en trabajadores sanitarios en el contexto de la pandemia por COVID-19 en los establecimientos de salud del Perú durante mayo de 2020. Métodos: Se realizó un estudio transversal en trabajadores sanitarios de establecimientos hospitalarios del Perú. Se elaboró un cuestionario estructurado que incluía las características sociodemográficas, la profesión, área y lugar de trabajo, y cuestionarios validados para trastorno de ansiedad generalizada (GAD-7), Salud del paciente (PHQ-9) y la Escala de impacto del estresor revisada (IES-R). Para el análisis se utilizó modelos lineales generalizados de Poisson, función de enlace logarítmico y varianzas robustas. Se calculó el rango intercuartílico (RIC) y la razón de prevalencia ajustada (RPa) y su intervalo de confianza del 95% (IC95%). Resultados: De un total de 258 encuestados, 254 (98%) completaron al cuestionario, siendo el 61,8% mujeres y el área de trabajo más común emergencia u hospitalización (62,2%). La puntuación mediana del PHQ-9 fue 4 (RIC:2-7), del GAD-7 fue 6 (RIC:4-8) y para el IES-R fue 16 (RIC:8-24). El análisis multivariado mostró que ser médico se asocia con una menor prevalencia de ansiedad (RPa: 0,77; IC 95%: 0,62-0,94), mientras que vivir solo se asoció con una mayor prevalencia de depresión (RPa: 1,46; IC 95%: 1,11-1,92). Conclusión: El personal sanitario manifestó alteraciones psicológicas, asociado principalmente al personal no médico y vivir solo.

Designs for determining nociceptive response in rodents are of great use in neurology and experimental neuroscience. Immersing mice's tails in warm water is one of the most widely used procedures to evaluate this response; however, a wide range of temperatures are used in different studies. Knowing the temperature that produces a powerful nociceptive response in the tail of BALB/c mice is extremely useful. Eight 2-month-old male BALB/c mice were used. A 14-cm high beaker was filled with water up to 13 cm. The animals' tails were immersed in the container with a starting temperature of 36°C. The water temperature was raised in 1°C increments until we identified the temperatures that produced nociceptive responses. That response was determined by counting the time taken before the mouse shook its tail to remove it from the water. Six of the 8 mice began shaking their tails at the temperature of 51°C. All animals removed their tails from the water at the temperatures of 54°C, 55°C, and 56°C, taking a mean time of 8.54, 7.99, and 5.33seconds, respectively. ANOVA applied to the response times for each of the 3 temperatures indicated revealed a value of F=2.8 (P=.123). The response time was statistically similar for the temperatures of 54°C, 55°C, and 56°C; however, the data were less dispersed for the latter temperature.

The aim of the study was to determine the nephroprotective effect of camu camu extract on a gentamicin-induced nephrotoxicity model. The study design was experimental using 50 Sprague Dawley rats randomly allocated into 1 of 5 five groups: a control group that was administered a saline solution, a gentamicin group in which nephrotoxicity was induced and experimental groups 1, 2 and 3 that were provided different doses of Camu Camu alcoholic extract. Nephroprotective activity was evaluated via quantification of seric creatinine, histopathological analysis and weighing of the kidneys. Results showed a significant decrease in creatinine levels between the group administered camu camu alcoholic extract and the gentamicin group (p<0.05). Groups who received camu camu presented a gradual increase in kidneys weight which corresponded directly to the extract dose (p<0.05). The histopathological analysis showed epithelial loss, intense inflammatory infiltrate and vascular congestion in the gentamicin group, while the groups who received the extract had a lower level of damage. Camu Camu extract provided a significant nephroprotective activity on a gentamicin-induced nephrotoxicity model.

Objective: To evaluate the effects of administering diclofenac and ketoprofen, as well as the effects of environmental oxygen pressure variation on mandibular bone regeneration. Methods: Thirty-six guinea pigs were distributed into two equal groups. Mandibular bone defects were performed on both groups. Group A was monitored under oxygen pressure at altitude (3320msl, 107mm Hg). Group B was monitored at sea level oxygen pressure (150msl, 157mm Hg). Each group was subdivided into 3 equal groups (A1, A2, A3 and B1, B2, B3). Subgroups A1 and B1 were given diclofenac; subgroups A2 and B2 ketoprofen; subgroups A3 and B3 NaCl. Bone regeneration was evaluated histologically on days 15 and 30. Results: After 15 days in the group controlled at sea level, the level of osteoblasts presented by the control subgroup was significantly higher (28.00±2.65) compared to the diclofenac subgroup (16.00±6.25) and to the ketoprofen subgroup (18.00±4.36); (p=0.041). After 15 days in the group controlled at altitude, the level of osteoblasts was significantly higher in the control subgroup (38.00±5.29) compared to the diclofenac subgroup (21.67±6.35) and to the ketoprofen subgroup (19.33±2.52); p=0.007. After 30 days in the group at sea level there was no difference found in the cell counting; p>0.05. After 30 days in the group controlled at altitude, the level of osteoblast was significantly higher in the control subgroup (58.00±4.58) compared to the diclofenac subgroup (34.33±4.73) and the ketoprofen subgroup (34.00±11.14); (p=0.003). Conclusion: The administration of diclofenac and ketoprofen produced lower mandibular bone regeneration, the effect being significantly more negative at sea level.

Introduction: Allergies are a problem that greatly affects the population, and hence the use of antiallergic medications is fairly widespread. However, these drugs have many adverse effects. The use of medicinal plants could be an option, but they need to be evaluated. Objective: This study was designed to evaluate the antiallergic effect of the atomized extract of rhizome of Curcuma longa, flowers of Cordia lutea, and leaves of Annona muricata. Materials and methods: Twenty-four New Zealand white albino rabbits were randomized into 2 groups. Group A received the atomized extract diluted in physiological saline (APS) and group B received it diluted in Freund’s adjuvant (FA). Then, the back of each rabbit was divided into 4 quadrants. The A-I quadrant received only physiological saline. The A-I quadrants of each rabbit conformed the PS group. The following 3 quadrants received the APS in 10 µg/mL, 100 µg/mL, and 1,000 µg/mL, respectively. The B-I quadrant received only FA. The B-I quadrants of each rabbit conformed the FA group. The following 3 quadrants received the AFA in 10 µg/mL, 100 µg/mL, and 1,000 µg/mL, respectively. The occurrence of erythema and edema was recorded according to the Draize scoring system and the primary irritation index. After 72 hours, biopsies were performed. Results: The AFA group presented significantly less erythema and edema compared to the FA group (P<0.05). The histopathologic evaluation at 72 hours showed normal characteristics in the APS group. Conclusion: Considering the clinical and histopathological signs, we conclude that the administration of the atomized extract of rhizome of C. longa, flowers of C. lutea, and leaves of A. muricata lacks antigenic effect but could have an antiallergenic effect in a model of dermal irritation in rabbits.

Palabras clave Estrés crónico; leucocitos; leucograma; masticación; ratones