Publications by authors named "Stella Zamuner"

Article Synopsis
  • Chronic Obstructive Pulmonary Disease (COPD) significantly affects global health, with factors such as smoking and immune cell profiles contributing to its severity; a deficiency in specific regulatory T cells can worsen respiratory issues.
  • Researchers employed Photobiomodulation (PBM) therapy to investigate its effects on immune response in a COPD mouse model by analyzing various immune cell types and cytokine production.
  • The findings indicated that PBM therapy alleviated COPD symptoms by reducing inflammatory immune cell counts, lowering pro-inflammatory cytokines like IFN-γ, and boosting the anti-inflammatory cytokine IL-10, suggesting a potential treatment avenue for COPD.
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Background: Photobiomodulation has exhibited promise in mitigating the local effects induced by Bothrops snakebite envenoming; however, the mechanisms underlying this protection are not yet fully understood. Herein, the effectiveness of photobiomodulation effects on regenerative response of C2C12 myoblast cells following exposure to Bothrops jararacussu venom (BjsuV), as well as the mechanisms involved was investigated.

Methodology/principal Findings: C2C12 myoblast cells were exposed to BjsuV (12.

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Necrosis is common in skin flap surgeries. Photobiomodulation, a noninvasive and effective technique, holds the potential to enhance microcirculation and neovascularization. As such, it has emerged as a viable approach for mitigating the occurrence of skin flap necrosis.

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Importance: Bothrops venom acts almost immediately at the bite site and causes tissue damage.

Objective: To investigate the feasibility and explore the safety and efficacy of low-level laser therapy (LLLT) in reducing the local manifestations of B atrox envenomations.

Design, Setting, And Participants: This was a double-blind randomized clinical trial conducted at Fundação de Medicina Tropical Doutor Heitor Vieira Dourado, in Manaus, Brazil.

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Prenatal alcohol exposure (PAE) impairs fetal development. Alcohol consumption was shown to modulate the renin-angiotensin system (RAS). This study aimed to analyze the effects of PAE on the expression of the renin-angiotensin system (RAS) and kallikrein-kinin system (KKS) peptide systems in the hippocampus and heart of mice of both sexes.

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The impact of prenatal alcohol exposure (PAE) varies considerably between individuals, leading to morphological and genetic changes. However, minor changes usually go undetected in PAE children. We investigated PAE's effects on gene transcription of genes related to cardiac dysfunction signaling in mouse myocardium and morphological changes.

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The use of anti-venom is one of the main control measures for snakebite envenoming when applied immediately after the snakebite. Systemic effects of the envenoming are usually reversed; however, neutralization of local effects is hardly achieved. The need for adjuvant therapies associated with serum therapy can improve the treatment for local effects of envenoming, with greater effectiveness in preventing or delaying the progression of damage, reducing the clinical signs and symptoms of victims of snakebites.

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Bothrops snake envenomation is characterized by severe local manifestations such as pain, edema, inflammation, hemorrhage, and myonecrosis. Furthermore, it is described that venom from juvenile and adult snakes may have differences in their composition that can lead to differences in the evolution of the clinical manifestation of the victim. Photobiomodulation (PBM) has been shown to be an effective adjuvant therapy to serum therapy to reduce the local effects induced by bothropic snake venom.

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Due to the high morbidity and mortality rates of this century, the COVID-19 pandemic has had a devastating impact on the health of the global population. The aim was to evaluate the disturbing impact of in-hospital stay length and the appeal of severe problems for supplemental oxygen for our patients with COVID-19 in moderate stage who were undergoing transvascular blood irradiation onto sublingual vessels. The demand for supplemental oxygen and the serum oxygen levels were measured, and the impact on the length of hospital stay was assessed.

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Photobiomodulation therapy associated with conventional antivenom treatment has been shown to be effective in reducing the local effects caused by bothropic venoms in preclinical studies. In this study, we analyzed the influence of photobiomodulation using light emitting diode (LED) on the oxidative stress produced by murine macrophages stimulated with venom and it isolated toxins BthTX-I and BthTX-II. Under LED treatment, we evaluated the activity of the antioxidant enzymes catalase, superoxide dismutase, and peroxidase as well as the release of hydrogen peroxide and the enzyme lactate dehydrogenase.

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The crude venom of the Bothrops jararaca snake (Bj-CV) is a complex mixture of biologically active proteins that includes a variety of peptides in the low molecular weight fraction (Bj-PF). We investigated how an intramuscular injection of Bj-CV (1.2 mg kg) and Bj-PF (0.

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Photobiomodulation using light-emitting diode (LED) treatment has analgesic and anti-inflammatory effects which can be an effective therapeutic associated with serum therapy for local treatment of snakebites. Here we explored the effects of LED treatment on isolated macrophage under Bothrops jararacussu venom. Results showed that LED induced IL-6 and TNF-α genes down-regulation and, TGF and ARG1 genes up-regulation which indicates a polarization of macrophages to an M2 phenotype contributing to both tissue repair and resolution of inflammation.

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Several reports have suggested that photobiomodulation, owing to its analgesic, anti-inflammatory, and healing effects, may be an effective therapeutic option for local effects of snakebites when the availability and accessibility of conventional serum therapy are inefficient and far from medical care centers. Although there have been studies that demonstrate the application of photobiomodulation in the treatment of local adverse events due to snakebites from snakes of the genus Bothrops, its role in the activation of leukocytes, particularly macrophages, has not been evaluated. Here, we assessed the effect of light-emitting diode (LED) treatment on macrophage activation induced by B.

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In this research, products with high quality were obtained from natural sources. The sensorial qualities, chemical characterization, and physical properties of gelatin extracted from chicken feet were compared with commercial gelatins. The extraction process was performed using acetic acid on a concentration ranging from 0.

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Background: Cutaneous and mucocutaneous leishmaniasis are parasitic diseases characterized by skin manifestations. In Brazil, Leishmania (Leishmania) amazonensis is one of the etiological agents of cutaneous leishmaniasis. The therapeutic arsenal routinely employed to treat infected patients is unsatisfactory, especially for pentavalent antimonials, as they are often highly toxic, poorly tolerated and of variable effectiveness.

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Snakebites caused by the genus Bothrops are often associated with severe and complex local manifestations such as edema, pain, hemorrhage, and myonecrosis. Conventional treatment minimizes the systemic effects of venom; however, their local action is not neutralized. The purpose of this study was to evaluate the effect of photobiomodulation (PBM) on C2C12 muscle cells exposed to B.

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The light-emitting diode (LED) is considered a therapeutic tool due to its anti-inflammatory, analgesic, and wound-healing effects, which occur through angiogenesis, decrease in IL-1β and IL-6 secretion, and acceleration of the cicatricial process. Snakebites are an important public health problem in tropical regions of the world. LED treatment is a therapeutic tool associated with serum therapy used to minimize the local effects of snakebites, including decrease in creatine kinase (CK) and lactate dehydrogenase (LDH) concentrations, myonecrosis, and inflammatory and haemorrhagic responses.

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Background: Candida albicans is an opportunistic fungus, an etiological agent of human infections, presenting high rates of morbidity and mortality. The resistance of C. albicans to conventional therapies has been reported due to the extensive use of conventional antifungals.

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Article Synopsis
  • The study assessed the healing effects of LED light therapy using two wavelengths (635 nm and 945 nm) on the damage caused by Bothrops asper snake venom in mice.
  • Treatment with LED light promptly after venom injection led to less swelling, lower white blood cell migration, and reduced pain sensitivity in the affected areas.
  • Both types of LED treatment also decreased muscle damage, confirmed by lower muscle enzyme levels and histological analysis, indicating that photobiomodulation could be a promising treatment for snakebite effects.
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Bothrops snakebite treatment is antivenom therapy, which is ineffective in neutralizing the severe local effects caused by these envenomations. There are evidence that photobiomodulation therapy (PBMT) has emerged as a promising tool to counteract the venom-induced local effects. The purpose was to write a narrative review of the literature about PBMT as a treatment for Bothrops snakebites.

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Among non-albicans Candida species, the opportunistic pathogen Candida krusei emerges because of the high mortality related to infections produced by this yeast. The Candida krusei is an opportunistic pathogen presenting an intrinsic resistance to fluconazol. In spite of the reduced number of infections produced by C.

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This report describes the effect of photobiomodulation (PBM) on edema formation, leukocyte influx, prostaglandin E (PGE) biosynthesis and cytotoxicity caused by bothropstoxin-I (BthTX-I), a phospholipase A (PLA) homologue isolated from Bothrops jararacussu snake venom. Swiss mice or C2C12 cells were irradiated with low-level laser (LLL) at 685nm wavelength, an energy density of 4.6J/cm and an irradiation time of 13s.

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Background: Bariatric surgery is a successful method for weight loss in cases of morbid obesity; however, as an invasive procedure, surgical complications may occur. Low-level laser therapy (LLLT) has been increasingly used due to its effectiveness in controlling the inflammatory response, accelerating tissue repair, and reducing pain. The objective of this study was to investigate photobiomodulation effects after bariatric surgery and determine the laser actions during the inflammatory process, wound healing (clinical observation), and analgesia.

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Background: Envenoming induced by Bothrops snakebites is characterized by drastic local tissue damage that involves an intense inflammatory reaction and local hyperalgesia which are not neutralized by conventional antivenom treatment. Herein, the effectiveness of photobiomodulation to reduce inflammatory hyperalgesia induced by Bothrops moojeni venom (Bmv), as well as the mechanisms involved was investigated.

Methodology/principal Findings: Bmv (1 μg) was injected through the intraplantar route in the right hind paw of mice.

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Tityus serrulatus is the scorpion specie responsible for the majority of scorpion sting accidents in Brazil. Symptoms of envenomation by Tityus serrulatus range from local pain to severe systemic reactions such as cardiac dysfunction and pulmonary edema. Thus, this study has evaluated the participation of bronchial epithelial cells in the pulmonary effects of Tityus serrulatus scorpion venom (Tsv).

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