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Vibrio cholerae represents diverse species and includes pathogenic and non-pathogenic variants. Particularly serogroups O1 and O139 are related to cholera epidemics, while non-O1/O139 serogroups (NOVC) in general are non-pathogenic or asymptomatic colonizers in humans, but also can cause different diseases. Vibrio albensis, a non-O1/non-O-139 serogroup, is rarely implicated in human infections. Only a few cases of human pathology related to this species are described in the literature. We present the menagement of V. albensis gastroenteritis in a a 47-year-old woman and discuss clinical presentation, diagnosis and treatement.
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Introduction: The spread of Covid-19 has worsened the prognosis of oncology patients, interrupting or delaying life-saving therapies and contextually increasing the risk of severe SARS-CoV-2 infections. Acute lymphoblastic leukemia (ALL) is the most frequent cancer in pediatric age and the management of this disease with concomitant SARS-COV-2 infection represents a challenging situation. Case presentation: We present the case of a 6-year-old female newly diagnosed with ALL during a documented SARS-CoV-2 infection. Our patient was admitted 20 days after SARS-CoV-2 detection for evening-rise fever. Laboratory testing showed severe neutropenia while chest x-ray detected moderate pulmonary involvement. Acute lymphoblastic leukemia diagnosis was made through morphological and molecular analysis on bone marrow aspirate. Given the stability of the blood count and clinical conditions, antiviral therapy with Remdesivir and Convalescent Plasma was started before antileukemic treatment, obtaining a rapid resolution of the infection. Conclusion: In our experience, the treatment with Remdesivir and Convalescent Plasma led to a rapid resolution of Sars-Cov-2 infection. Our case did not present any adverse event to the therapy. Thus, this treatment could be considered in patients with malignancies, in order to accelerate the resolution of the infection and begin immunosuppressive treatment safely. Further studies are required to confirm this hypothesis.
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OBJECTIVES: To evaluate the evolution of HIV-1 coreceptor tropism in proviral DNA of patients during maraviroc-based therapy. METHODS: Fourteen heavily high active antiretroviral therapy (HAART)-treated patients with a CCR5 Trofile profile were monitored over a 24 month period from the start of maraviroc therapy. Whole-blood samples were obtained at different timepoints, and coreceptor tropism was determined for proviral DNA from the V3-loop region sequence using the Geno2Pheno algorithm [false positive rate (FPR): 20%]. RESULTS: At the start of maraviroc treatment, 13/14 patients were viraemic (median: 4.33 log copies/mL). Concordance in R5 tropism (R5/R5) was observed between circulating HIV-RNA (Trofile) and HIV-DNA provirus in 10/14 patients (median FPR = 54.0%), while 4 patients showed a CXCR4-tropic R5/X4 variant in their provirus (FPR: 5.8%, 5.7%, 16.6% and 1.1%, respectively). All R5/R5 patients showed a stable HIV-1 DNA coreceptor usage. Two out of four R5/X4 patients showed a tropism shift in their archived provirus and, after 6 months a prevalence of R5-tropic virus was detected in DNA. The other two R5/X4 patients harboured the 11/25 genotype, and maintained X4 tropism in provirus during the study. Virological response did not reveal differences in RNA decay and CD4+ cell recovery in patients with discordant tropism. CONCLUSIONS: A relatively good correlation between RNA and DNA tropism was observed at baseline. Proviral DNA tropism remained stable over 24 months of maraviroc-based therapy, indicating that determination of proviral DNA V3 sequence could be used in tropism prediction in clinical practice. The data also confirm the importance of the 11/25 rule in predicting viral tropism.
