Publications by authors named "Larissa Araujo Rolim"

Article Synopsis
  • Passiflora cincinnata, a plant native to Brazil's unique Caatinga biome, contains various flavonoids known for their pharmacological benefits, particularly in skin protection.* -
  • Research focused on a specific hydro-alcoholic extract (Pc-1) which demonstrated strong antioxidant and photoprotective properties, identifying nine key flavonoids through advanced analysis methods.* -
  • When included in gel formulations, Pc-1 showed high SPF values and improved the effectiveness of commercial sunscreen ingredients, suggesting its potential as a valuable addition in sun protection products.*
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Background: Neglected Tropical Diseases (NTD) are chronic infectious conditions that primarily affect marginalized populations. The chemotherapeutic arsenal available for treating NTD is limited and outdated, which poses a challenge in controlling and eradicating these diseases. This is exacerbated by the pharmaceutical industry's lack of interest in funding the development of new therapeutic alternatives.

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The traditional use of the M. charantia L. plant to treat coughs, fever and expectoration is widely practiced in different cultures, but its effectiveness and safety still require scientific investigation.

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Article Synopsis
  • * The study characterized the aqueous extract through tests such as pH, density, and phytochemical screening, then freeze-dried it to create a dry extract which was further tested for pharmacological effects and toxicity.
  • * The results demonstrated that the dry extract can effectively reduce adult and female schistosomiasis worms as well as egg production, leading to the development of a suitable oral pharmaceutical solution for treatment.
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Background: L. is a plant with significant potential for drug development due to the presence of numerous bioactive compounds in its various parts.

Objectives: This article aims to compile the technological perspectives of L.

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Ethnopharmacological Relevance: Although the root of Cannabis sativa L. has been mentioned in some regions, such as the Vale do São Francisco, for its potential traditional medicinal use as an anti-inflammatory, anti-asthmatic, and against gastrointestinal diseases, it has received little exploration and discussion.

Aim Of The Study: This study aimed to perform a chemical analysis of an aqueous extract of Cannabis sativa roots (AqECsR) and evaluate its pharmacological effects against uterine disorders, in vivo and ex vivo, in rodents.

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This article describes the phytochemical study of Cannabis sativa roots from northeastern Brazil. The dried plant material was pulverized and subjected to exhaustive maceration with ethanol at room temperature, obtaining the crude ethanolic extract (Cs-EEBR). The volatile compounds were analyzed by gas chromatography coupled with mass spectrometry (GC/MS), which allowed to identify 22 compounds by comparing the linear retention index (LRI), the similarity index (SI) and the fragmentation pattern of the constituents with the literature.

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Background: Depression is a psychiatric disorder with limited therapy options. Psychedelics are new antidepressant candidates, being the ayahuasca one of the most promising ones. A synergistic combination of -dimethyltryptamine (DMT) and β-carbolines allows ayahuasca antidepressant properties.

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A phytochemical investigation of cytotoxic extract and fractions of Cnidoscolus quercifolius Pohl led to isolation of five terpenoids, including three lupane-type triterpenes (1-3) and two bis-nor-diterpenes (4-5). Compounds 4 (phyllacanthone) and 5 (favelanone) are commonly found in this species and have unique chemical structure. Although their cytotoxic activity against cancer cells has been previously reported, the anticancer potential of these molecules remains poorly explored.

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A new nor--kaurene diterpene and ten other compounds were isolated from stems, including four kaurene diterpenes, three alkamides, one sesquiterpene and two steroids. Their chemical structures were elucidated using spectroscopic methods, including 1D-, 2D-NMR, and HRESIMS. The absolute configuration of compounds , , , and was confirmed by CD experiments.

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Article Synopsis
  • The text discusses a medicinal plant that is commonly used for healthcare in Brazil, despite cultivation and medicinal use being prohibited in the country.
  • The study aimed to analyze the root samples of the plant to identify chemical compounds linked to antitussive (cough relief) and expectorant (mucus clearing) effects, using techniques like LC-MS.
  • Results showed that various doses of the plant's extracts demonstrated potential for treating cough and promoting expectoration in animal models, emphasizing the plant's importance in traditional medicine and future therapeutic applications.
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The present paper aims to establish different treatments for neglected tropical disease by a survey on drug conjugations and possible fixed-dose combinations (FDC) used to obtain alternative, safer and more effective treatments. The source databases used were Science Direct and PubMed/Medline, in the intervals between 2015 and 2021 with the drugs key-words or diseases, like "schistosomiasis", "praziquantel", "malaria", "artesunate", "Chagas' disease", "benznidazole", "filariasis", diethylcarbamazine", "ivermectin", " albendazole". 118 works were the object of intense analysis, other articles and documents were used to increase the quality of the studies, such as consensuses for harmonizing therapeutics and historical articles.

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Background: The oral route is the most frequently used and the most convenient route of drug administration since it has several advantages, such as ease of use, patient compliance, and better costeffectiveness. However, physicochemical and biopharmaceutical limitations of various active pharmaceutical ingredients (API) hinder suitability for this route, including degradation in the gastrointestinal tract, low intestinal permeability, and low bioavailability. To overcome these problems, while maintaining therapeutic efficacy, polymeric nanoparticles have attracted considerable attention for their ability to increase drug solubility, promote the controlled release, and improve stability.

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Layered Double Hydroxides (LDH) have received great attention in the development of drug carrier systems. LDHs have become intelligent excipients of high technological potential for the pharmaceutical industry due to their ability to intercalate biomaterials in the interlayer region, adsorb substances on its vast surface area, have flexible structure, swelling properties, high chemical and thermal stability, modulate drug release, have high biocompatibility and be easily synthesized. This article, using typical examples, mainly addresses the systems formed between LDHs and antimicrobial, antineoplastic and anti-inflammatory agents, which constitute the main pharmacological classes of wide interest due to the problems encountered with low solubility, control in administration, stability in body fluids and toxicity, among others.

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In Brazil, the leather industry is an important economic segment moving around U$ 3 billions of dollars a year. However, high amounts of water are requested to transform skin animals into leather, causing high wastewater amounts to be consequently produced. A major problem is attached to the presence of chromium in the wastewater from the tanning process.

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Background: Albendazole (ABZ) is the drug of choice for the treatment of a variety of human and veterinary parasites. However, it has low aqueous solubility and low bioavailability. Cyclodextrins (CD) are pharmaceutical excipients with the ability to modulate the solubilization property of hydrophobic molecules.

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Article Synopsis
  • The study explores the potential medicinal benefits of Cannabis sativa roots, which are traditionally utilized for treating pain, inflammation, and fever but have been understudied compared to other parts of the plant.
  • Researchers aimed to test the antinociceptive (pain-relieving), antipyretic (fever-reducing), antiasthmatic, and spasmolytic (muscle-relaxing) properties of an aqueous extract from these roots in mice and rats.
  • Results showed that the extract significantly reduced pain in various experiments and demonstrated anti-inflammatory effects in asthmatic models, indicating promising therapeutic potential for C. sativa roots.
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Chagas disease is a neglected tropical disease caused by the flagellate protozoan Trypanosoma cruzi (T. cruzi). Endemic in underdeveloped and developed countries, due to the migratory movement, it is considered a serious public health problem.

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Ethnopharmacological Relevance: The genus Triplaris (Polygonaceae) comprises approximately 25 species distributed throughout South and Central America. Some species have been used in folk medicine, mainly, to treat malaria, leishmaniasis, diarrheia, dysenteria, pain and inflammation.

Aim Of The Study: The purpose of this review is to provide information on the traditional uses, phytochemistry and known biological activities of Triplaris, an important genus for South America research groups on medicinal plants, in order to explore its therapeutic potential to direct future research in the search for new bioactive molecules.

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: Metal organic frameworks (MOFs) are a recent group of nano porous materials with exceptional physical properties, such as large surface areas, high pore volumes, low densities and well-defined pores. This type of material has been used frequently for biomedical and therapeutic applications, such as drug delivery systems and theranostic materials.: In this review, the authors searched for patents filed in the last 10 years, found in different databases, related to the therapeutic or biomedical application of MOFs for use in different health fields.

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β-Lapachone is an ortho-naphthoquinone originally isolated from the heartwood of Handroanthus impetiginosus and can be obtained through synthesis from lapachol, naphthoquinones, and other aromatic compounds. β-Lapachone is well known to inhibit topoisomerase I and to induce NAD(P)H: quinone oxidoreductase 1. Currently, phase II clinical trials are being conducted for the treatment of pancreatic cancer.

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Ethnopharmacological Relevance: There are many studies and therapeutic properties attributed to the flowers and leaves of the Cannabis species, but even with few pharmacological studies, Cannabis sativa L. (Cannabaceae) roots presents several therapeutic indications in folk medicine.

Aim Of The Study: This study aimed to evaluate the anti-inflammatory and spasmolytic effects as well as the toxicological profile of the aqueous extract of Cannabis sativa roots (CsAqEx) in mice.

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The study aimed to include the isolated vitexin of in the β-cyclodextrin cavity to improve the solubility of this flavone. Its characterization was performed by techniques such as H NMR/ROESY (Nuclear Magnetic Resonance Spectroscopy), FT-IR (Infrared Spectroscopy with Fourier Transform), SEM (Morphological analysis of IC by Scanning Electron Microscopy) and dissolution study . In addition, the following activities were evaluated in the animal models: expectorant, phenol red dosage in bronchoalveolar lavage and antitussive, cough induced by citric acid.

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(Pohl) Baill is an endemic species of the biome, little studied in terms of chemical composition. The objective of this work was to develop an analytical methodology to quantify vitexin in the ethanolic extract of and to evaluate the expectorant and antitussive activities in mice. The expectorant activity was performed by measuring the phenol red obtained from the bronchoalveolar fluid in animals and the antitussive activity was evaluated by the cough method induced by citric acid (0.

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