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Edible mushrooms have a number of medicinal properties and this study aimed to investigate the antimicrobial activity of Pleurotus eryngii DPUA1816 in metabolic broths after being grown in submerged cultivation. Mycelial fragments of pure P. eryngii culture was inoculated in sweet potato culture medium and incubated at 150 rpm for 15 days at 25°C. Pleurotus eryngii was also cultivated for 18 days under the same conditions, the mycelial biomass was separated by filtration for quantification. The supernatant was used in the diffusion test in agar and performed against Escherichia coli CCCD-E005, Staphylococcus aureus CCCD-S009, Pseudomonas aeruginosa CCCD-P004, Candida albicans CCCD-CC001, Candida parapsilosis CCCD-CC004 and Candida tropicalis CCCD-CC002. The samples showed no inhibitory activity against bacteria, however they showed some activity against C. albicans (12.17 mm), C. parapsilosis (27.67 mm) and C. tropicalis (13.67 mm). After being cultivated for 18 days, P. eryngii was able to inhibit all yeasts after 12 days of culture, with an inhibition halo of 29.33 mm at 16 days against C. parapsilosis. This study demonstrates the antifungal potential filtered liquids from P. eryngii cultivated in purple-skinned sweet potato culture medium, which suggests the possibility of the use of this species by the pharmaceutical industry as a natural source of biological action.

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Objective: Checking the frequency of reagent samples for syphilis in pregnant women treated at the Distrital Leste Laboratory in the city of Manaus from January 2016 to December 2018, comparing the positive VDRL (Venereal Disease Research Laboratory) cases with the confirmatory FTA-Abs (Fluorescent Treponemal Antibody Absorption Test). Methods: The study was cross-sectional and assessed the results of two syphilis diagnostic tests, VDRL and FTA-Abs. Data were obtained using the database of the electronic program SoftLab® and the Laboratory Environment Manager (GAL) and were quantitatively analyzed. Results: In 2016, 9,028 VDRL tests were performed on pregnant women, 8,562 tests in 2017 and 5,064 in 2018. From this total, 1020 tested positive for syphilis; 392 in 2016, 320 in 2017 and 308 in 2018, increasing from 4 to 6%. Comparison with the FTA-Abs was only made possible in 2016 when the diagnosis was confirmed in 82% of the tests. Conclusion: It was possible to check the frequency of pregnant women with positive and confirmatory results from 2016 to 2018, showing that although this pathology is easily preventable, it remains a challenging public health issue in pregnant women.

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