Prevalence of COVID-19 Complications during a Program of Homeopathic Camphora Officinalis Distribution to City Populations of Santa Catarina, Brazil: An Ecological Study.

BACKGROUND: Coronavirus disease 2019 (COVID-19), a disease caused by the SARS-CoV-2 coronavirus, was declared a pandemic in March 2020, posing significant challenges globally. Homeopathy has historical relevance in epidemic management. In response, the government of the state of Santa Catarina, Brazil, distributed Camphora 1M as a potential prophylactic intervention for COVID-19. OBJECTIVE: This study aimed to investigate the possible effects of Camphora 1M as an adjunctive prophylactic measure in managing COVID-19, focusing on mortality and hospitalization rates, during the period April 28 to July 31, 2020, within designated COVID-19 in-patient units in Santa Catarina. METHODS: An ecological study design was applied to this epidemiological research. Five case municipalities (Itajaí, Atalanta, Entre Rios, Rio do Campo, Trombudo Central) were compared with five control municipalities (São José, Galvão, Pedras Grandes, Grão-Pará, Ascurra). RESULTS: No statistically significant differences were observed in predictor variables between municipalities that received Camphora 1M and the respective controls. Similarly, no statistically significant differences were observed in outcomes: deaths (p = 0.879), hospitalized cases (p = 0.537), daily ward admissions (p = 0.730) and ICU admissions (p = 0.072). CONCLUSION: For the first wave of the pandemic in the state of Santa Catarina, Brazil, city-wide distribution of Camphora 1M was not associated with reduced numbers, severity or mortality among the population hospitalized in designated public hospitals for COVID-19.

Self-Nanoemulsifying Drug Delivery System (SNEDDS) Using Lipophilic Extract of Viscum album subsp. austriacum (Wiesb.) Vollm.

Background and Purpose: Natural products are potential sources of anticancer components. Among various species, the lipophilic extract of the Viscum album subsp. austriacum (Wiesb.) Vollm. (VALE) has shown promising therapeutic potential. The present work aimed to qualify the plant source and characterize the extract's chemical profile. In addition, a self-nanoemulsifying drug delivery system (SNEDDS) containing VALE (SNEDDS-VALE) was developed. Methods: V. album subsp. austriacum histochemistry was performed, and the chemical profile of VALE was analyzed by GC-MS. After the SNEEDS-VALE development, its morphology was visualized by transmission electron microscopy (TEM), while its stability was evaluated by the average droplet size, polydispersity index (PdI) and pH. Lastly, SNEDDS-VALE chemical stability was evaluated by LC-DAD-MS. Results: The histochemical analysis showed the presence of lipophilic compounds in the leaves and stems. The major compound in the VALE was oleanolic acid, followed by lupeol acetate and ursolic acid. SNEDDS was composed of medium chain triglyceride and Kolliphor® RH 40 (PEG-40 hydrogenated castor oil). A homogeneous, isotropic and stable nanoemulsion was obtained, with an average size of 36.87 ± 1.04 nm and PdI of 0.14 ± 0.02, for 14 weeks. Conclusion: This is the first histochemistry analysis of V. album subsp. austriacum growing on Pinus sylvestris L. which provided detailed information regarding its lipophilic compounds. A homogeneous, isotropic and stable SNEDDS-VALE was obtained to improve the low water solubility of VALE. Further, in vitro and in vivo experiments should be performed, in order to evaluate the antitumoral potential of SNEDDS-VALE.

L-tyrosine-loaded nanoparticles increase the antitumoral activity of direct electric current in a metastatic melanoma cell model.

Inhibition of tumor growth induced by treatment with direct electric current (DC) has been reported in several models. One of the mechanisms responsible for the antitumoral activity of DC is the generation of oxidative species, known as chloramines. With the aim of increasing chloramine production in the electrolytic medium and optimizing the antitumoral effects of DC, poly(ɛ-caprolactone) (PCL) nanoparticles (NPs) loaded with the amino acid tyrosine were obtained. The physical-chemical characterization showed that the NPs presented size in nanometric range and monomodal distribution. A slightly negative electrokinetic potential was also found in both blank NPs and L-tyrosine-loaded PCL NPs. The yield of the loading process was approximately 50%. Within 3 h of dissolution assay, a burst release of about 80% L-tyrosine was obtained. The in vitro cytotoxicity of DC was significantly increased when associated with L-tyrosine-loaded NPs, using a murine multidrug-resistant melanoma cell line model. This study showed that the use of the combination of nanotechnology and DC has a promising antineoplastic potential and opens a new perspective in cancer therapy.