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1.
Brain Tumor Res Treat ; 12(2): 87-92, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38742256

RESUMEN

BACKGROUND: Sleep has confirmed physical, psychological, and behavioral benefits, and disruptions can result in disturbances in these states. Moreover, it can be linked bidirectionally with susceptibility to and the subsequent status of brain tumors. The current study examined mood disorders and sleep quality before and after surgery for hemangioblastoma brain tumors. METHODS: Thirty-two patients diagnosed with hemangioblastoma brain tumors between 2017 and 2023 underwent surgical treatment. The Karnofsky Performance Status and ECOG performance status scales, the Brunel Mood Scale, the Morningness-Eveningness Questionnaire, and the Mini-Sleep Questionnaire were employed to assess the patients. RESULTS: The findings indicate that after surgery, sleep quality and mood disorders, including tension, vigor, and depression, did not exhibit significant differences in these patients (p>0.05). However, tension, vigor, depression, and sleep quality did have a significant impact on their functional status post-surgery (p<0.05). CONCLUSION: Depression is the significant mood factor in patients with brain tumors that impact their functional status. In this context, it is recommended that psychological therapies be considered for them, alongside conducting more comprehensive and in-depth studies on psychological disorders in patients with brain tumors.

2.
J Educ Health Promot ; 13: 83, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38720688

RESUMEN

BACKGROUND: Appropriate care of patients with definite spinal cord injury or at risk of it in the prehospital and hospital stages requires comprehensive planning in the health system. It is also the requirement of any successful program to explain the needs from the perspective of its stakeholders. Thus, this study aimed to discover the care needs of adults with spinal trauma in prehospital and hospital settings from the perspective of the patient care team. MATERIALS AND METHODS: This qualitative study was conducted with the participation of urban and rural prehospital emergency personnel and emergency departments of educational and therapeutic hospitals affiliated to Isfahan, Tehran, Shiraz, Kermanshah, Ahvaz, and Yasuj Universities of Medical Sciences, through conducting 36 in-depth semi-structured interviews from September to December 2021. Using purposive sampling method, the participants were selected considering the maximum variation. The data saturation was reached after conducting interviews and group discussions with 36 subjects. Data were analyzed using conventional content analysis approach. Lundman and Graneheim approach were used for the study rigour. Data were simultaneously analyzed using MAXQDA software version 10. RESULT: During the data analysis, two themes of prehospital care with two main categories (emergency care and management of secondary complications of spinal trauma) and hospital care with two main categories (emergency care and management of secondary complications of spinal trauma) emerged. CONCLUSION: Emergency care and management of secondary complications of spinal cord injury in the prehospital and hospital stages can affect treatment results, improve quality of life, and reduce mortality rate, secondary injuries, and healthcare costs. Thus, identification of the care needs of the adults with spinal trauma from the perspective of the patient care team can help the authorities to plan appropriate interventions.

3.
Clin Neurol Neurosurg ; 239: 108219, 2024 04.
Artículo en Inglés | MEDLINE | ID: mdl-38471197

RESUMEN

Traumatic brain injury (TBI) is damage to the brain by an external physical force. It may result in cognitive and physical dysfunction. It is one of the main causes of disability and death all around the world. In 2016, the worldwide incidence of acute TBI was nearly 27 million cases. Therapeutic interventions currently in use provide poor outcomes. So recent research has focused on stem cells as a potential treatment. The major objective of this study was to conduct a systematic review of the recent clinical trials in the field of stem cell transplantation for patients with TBI. The Cochrane Library, Web of Science, SCOPUS, PubMed and also Google Scholar were searched for relevant terms such as "traumatic brain injury", " brain trauma", "brain injury", "head injury", "TBI", "stem cell", and "cell transplantation" and for publications from January 2013 to June 2023. Clinical trials and case series which utilized stem cells for TBI treatment were included. The data about case selection and sample size, mechanism of injury, time between primary injury and cell transplantation, type of stem cells transplanted, route of stem cell administration, number of cells transplanted, episodes of transplantation, follow-up time, outcome measures and results, and adverse events were extracted. Finally, 11 studies met the defined criteria and were included in the review. The total sample size of all studies was 402, consisting of 249 cases of stem cell transplantation and 153 control subjects. The most commonly used cells were BMMNCs, the preferred route of transplantation was intrathecal transplantation, and all studies reported improvement in clinical, radiologic, or biochemical markers after transplantation. No serious adverse events were reported. Stem cell therapy is safe and logistically feasible and leads to neurological improvement in patients with traumatic brain injury. However, further controlled, randomized, multicenter studies with large sample sizes are needed to determine the optimal cell and dose, timing of transplantation in acute or chronic phases of TBI, and the optimal route and number of transplants.


Asunto(s)
Lesiones Traumáticas del Encéfalo , Lesiones Encefálicas , Humanos , Lesiones Traumáticas del Encéfalo/terapia , Trasplante de Células Madre/efectos adversos , Cabeza
4.
J Educ Health Promot ; 12: 252, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37727424

RESUMEN

The use of the cervical collar to support the head and neck is inevitable in many patients with head and spinal cord injuries. One of the consequences of using this instrument is the development of pressure injuries. Therefore, in this review study, the incidence of as well as the risk factors for cervical collar-related pressure injury in this group of patients was evaluated. The current study is a scoping review conducted in 2022. Five scientific databases (PubMed, Scopus, Web of Science, ProQuest, and CINAHL), as well as Google Scholar, were searched for relevant studies published from 1990 to 2022 using the following keywords: trauma, spinal cord injury, head injury, head trauma, collar, cervical collar, cervical immobilization, risk factors, incidence, pressure injury, pressure ulcer, and bed sore. The search was performed independently by two researchers. Articles from the initial search were first recorded in special tables, and then, were reviewed and analyzed separately by two researchers. After extraction, information from each article was entered into a special table categorized by year, country, study design, study population, the incidence of cervical collar-related pressure injury, risk factors for cervical collar-related pressure injury, and grades of pressure injury. Of the 10 articles, 6 were retrospective cohort studies, 3 were cross-sectional descriptive studies, and 1 was a case report study. In terms of the study population, one study was conducted on pediatric patients, one was conducted on elderly patients, and eight were conducted on adults with head and neck trauma. In eight articles, the incidence of cervical collar-related pressure injury was reported. The reported incidence varied between 1.1% and 78.4%. In eight articles, risk factors for cervical collar-related pressure injury were reported. The most common risk factors were duration of cervical collar use, hospitalization in intensive care units, low level of consciousness, and longer hospital stay. The current review study showed that a significant percentage of head and neck trauma patients for whom cervical collar is used suffer from different grades of pressure injuries. Hence, healthcare providers should consider this issue when caring for this group of patients and take the necessary preventive measures in this regard. It should be noted that previous studies in this field had significant limitations, and thereby, it is strongly recommended to conduct further studies with a stronger methodology.

5.
Microorganisms ; 11(8)2023 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-37630651

RESUMEN

This study aims to screen new LAB from Algerian cow's milk to assess their probiotic properties. Molecular identification and MALDI-TOF mass spectrometry methods were used to identify the LAB isolates. The probiotic potential of isolates was determined with in vitro tests of survival to gastrointestinal conditions (pH 2, 0.3% pepsin, 0.5% bile salts, 0.1% trypsin, and 0.1% pancreatic amylase) and antimicrobial and antioxidant activities. Eight isolates were identified as Lactiplantibacillus plantarum (100%) and one isolate as Lacticaseibacillus rhamnosus (95.75%). The MALDI-TOF MS analysis of the isolates confirms that the strains belong to the group of lactobacilli bacteria, particularly Lactiplantibacillus plantarum. The high survival rate reflects a good strain tolerance to the in vitro host simulated gastrointestinal conditions. All bacteria exhibit an antibacterial activity strain with inhibition zone diameters ranging from 4.9 mm against Aspergillus niger ATCC 106404 to 17.47 mm against Candida albicans ATCC 10231. The antioxidant activity with the highest DPPH scavenging activity (92.15%) was obtained with the LbN09 strain. In light of these results, some of the strains isolated from raw milk of the local Algerian breed cows show promising probiotic properties, giving them a possible use in preserving food from microbial spoilage and oxidation during storage.

6.
Clin Case Rep ; 11(6): e7535, 2023 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-37323251

RESUMEN

Key Clinical Message: In patients with acute symptoms such as pain, swelling, and erythema of the upper extremities shortly after receiving COVID-19 vaccines, even inactivated virus vaccines, these symptoms may indicate thrombosis, which may be due to the vaccination. Abstract: BBIBP-CorV COVID-19 vaccine (Sinopharm vaccine) is an inactivated whole virus vaccine to control the COVID-19 pandemic. Studies concluded that inactivated COVID-19 vaccines do not increase the risk of thrombosis. This report presents a 23-year-old man with the chief complaint of severe pain, swelling, and erythema of the right upper extremity following his second dose of the Sinopharm vaccine. Duplex ultrasound of the right upper extremity revealed upper extremity deep vein thrombosis, and treatment started with oral anticoagulation. It is probably the first upper extremity deep vein thrombosis case following inactivated COVID-19 vaccines.

7.
J Alzheimers Dis ; 94(1): 359-370, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37248896

RESUMEN

BACKGROUND: Recent therapeutic approaches for Alzheimer's disease (AD) have had limited success. Considering the association of neuroinflammation with AD symptoms as demonstrated in multiple studies, assessment of the clinical efficacy of molecules that reduce systemic or brain inflammation is warranted. OBJECTIVE: This clinical trial assessed whether boswellic acids can improve cognitive and neuropsychiatric symptoms while reducing inflammation in AD patients. METHODS: A double-blind, placebo-controlled, study was conducted on 85 AD patients randomized to boswellic acids (K-Vie™ as the main ingredient in Memowell™) or placebo for 6 months. Clinical Dementia Rating-Sum of Boxes (CDR-SOB) and Mini-Mental State Examination (MMSE) scores were compared to baseline and between groups and constituted the co-primary clinical efficacy endpoints. Secondary outcomes included neuropsychiatric assessment (Neuropsychiatric Inventory-Questionnaire, NPI-Q) and assessment of AD and inflammation biomarkers. RESULTS: Patients on K-Vie™ showed a 3.1- and 1.6-unit improvement in MMSE and CDR-SOB scores, respectively, when compared to patients on placebo. NPI-Q analysis revealed significant improvement in the K-Vie™ but not in the placebo group. Only mild gastrointestinal side effects were reported in a few patients. Patients on K-Vie™ showed improvement in plasma AD biomarkers and reduction of key inflammatory cytokines including IL-6 and TNF. CONCLUSION: Our results support the positive cognitive effects of boswellic acids by reducing the systemic inflammation.


Asunto(s)
Enfermedad de Alzheimer , Humanos , Enfermedad de Alzheimer/tratamiento farmacológico , Enfermedad de Alzheimer/psicología , Resultado del Tratamiento , Inflamación/tratamiento farmacológico , Cognición , Biomarcadores
8.
Microorganisms ; 11(4)2023 Apr 14.
Artículo en Inglés | MEDLINE | ID: mdl-37110453

RESUMEN

This study aims to see if probiotic bacteria from human milk could ameliorate oral cow's milk sensitization. The probiotic potential of the SL42 strain isolated from the milk of a healthy young mother was first determined. Rats were then randomly gavaged with cow's milk casein without an adjuvant or assigned to the control group. Each group was further subdivided into three groups, with each receiving only Limosilactobacillus reuteri DSM 17938, SL42, or a phosphate-buffered saline solution. Body weight, temperature, eosinophils, serum milk casein-specific IgE (CAS-IgE), histamine, and serum S100A8/A9 and inflammatory cytokine concentrations were measured. The animals were sacrificed after 59 days; histological sections were prepared, and the spleen or thymus weights, as well as the diversity of the gut microbiota, were measured. On days 1 and 59, SL42 abridged systemic allergic responses to casein by dropping histamine levels (25.7%), CAS-specific IgE levels (53.6%), eosinophil numbers (17%), S100A8/9 (18.7%), and cytokine concentrations (25.4-48.5%). Analyses of histological sections of the jejunum confirmed the protective effect of probiotic bacteria in the CAS-challenged groups. Lactic acid bacteria and Clostridia species were also increased in all probiotic-treated groups. These findings suggest that probiotics derived from human milk could be used to alleviate cow's milk casein allergy.

9.
Clin Case Rep ; 11(4): e7277, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-37113638

RESUMEN

Patients complaining of rectal bleeding, constipation, and a suspicious mass in colonoscopy should undergo biopsy. Histological features such as fibromuscular obliteration in the lamina propria favor SRUS, a benign disorder.

10.
BMC Gastroenterol ; 23(1): 135, 2023 Apr 25.
Artículo en Inglés | MEDLINE | ID: mdl-37098505

RESUMEN

BACKGROUND: Irritable bowel syndrome (IBS) is one of the world's most common gastrointestinal (GI) disorders, and current treatments do not meet patients' demands. This study aimed to investigate melatonin's therapeutic effects on IBS score, GI symptoms, quality of life, and sleep parameters in both groups of IBS patients with and without sleep disorders. METHODS: In this randomized double-blinded placebo-controlled trial study, 136 patients with a diagnosis of IBS based on ROME IV criteria were enrolled and then divided into two groups respecting having sleep disorders or not. Patients of each group were randomized in a 1:1 ratio to receive melatonin 6 mg daily (3 mg fasting and 3 mg at bedtime) for 2 months (8 weeks). Blocked randomization was used in this process. All patients were evaluated both at the beginning and the end of the trial regarding IBS score, GI symptoms, quality of life, and sleep parameters through valid questionnaires. RESULTS: In both groups of patients with and without sleep disorders, a significant improvement was observed in IBS score and GI symptoms, including the severity and the frequency of abdominal pain, the severity of abdominal bloating, satisfaction with bowel habits, disease's impact on patient's life, and stool consistency; however, there was no significant improvement in the frequency of defecations per week. In patients with sleep disorders, significant improvement in sleep parameters, including subjective sleep quality, sleep latency, sleep duration, sleep efficiency, and daytime dysfunction, was observed, while in patients without sleep disorders, there was no significant improvement in sleep parameters. In addition, quality-of-life improvement was observed in a significant number of melatonin recipients compared to placebo in both groups of patients. CONCLUSION: Melatonin can be considered an effective treatment for improving IBS score, GI symptoms, and quality of life in IBS patients with and without sleep disorders. It is also effective to improve sleep parameters in IBS patients with sleep disorders. TRIAL REGISTRATION: This study has been registered to the Iranian Registry of Clinical Trials (IRCT) with the approval number IRCT20220104053626N2 on the date of 13/02/2022.


Asunto(s)
Síndrome del Colon Irritable , Melatonina , Trastornos del Sueño-Vigilia , Humanos , Síndrome del Colon Irritable/complicaciones , Síndrome del Colon Irritable/tratamiento farmacológico , Melatonina/uso terapéutico , Calidad de Vida , Irán , Resultado del Tratamiento , Dolor Abdominal/tratamiento farmacológico , Método Doble Ciego , Trastornos del Sueño-Vigilia/tratamiento farmacológico , Trastornos del Sueño-Vigilia/etiología
11.
Clin Case Rep ; 11(3): e6981, 2023 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-36891239

RESUMEN

A 6-year-old girl with persistent headaches and the visual problem was diagnosed as a delayed onset cranial pansynostosis with concurrent type 1.5 Arnold-Chiari malformation. She underwent multi-sutural reconstructive surgery and followed. The headache was greatly decreased and tonsillar-brain stem herniation and syrinx were resolved.

12.
ACS Omega ; 7(34): 30347-30358, 2022 Aug 30.
Artículo en Inglés | MEDLINE | ID: mdl-36061732

RESUMEN

A potential therapeutic strategy to inhibit tau protein aggregation in neurons has substantial effects on preventing or controlling Alzheimer's disease (AD). In this work, we designed a covalent and noncovalent conjugation of ß-boswellic acid (BA) to gold nanoparticles (GNPs). We provided the opportunity to investigate the effect of the surface composition of BA-GNPs on the aggregation of the tau protein 1N/4R isoform in vitro. HR-TEM and FESEM micrographs revealed that GNPs were spherical and uniform, smaller than 25 nm. According to UV-visible and FTIR data, BA was successfully conjugated to GNPs. The finding illustrates the effect of the surface charge, size, and hydrophobicity of BA-GNPs on the kinetics of tau protein aggregation. The size and surface area of U-G-BA demonstrated that inhibited tau aggregation more effectively than covalently linked BA. The proposed method for preventing tau aggregation was monomer reduction. At the same time, a chaperone-like feature of GNP-BA while sustaining a tau native structure prevented the additional formation of fibrils. Overall, this study provides insight into the interaction of GNP-BAs with a monomer of tau protein and may suggest novel future therapies for AD.

13.
Brain Inj ; 36(4): 553-559, 2022 03 21.
Artículo en Inglés | MEDLINE | ID: mdl-35385330

RESUMEN

BACKGROUND: Traumatic brain injury (TBI) is a major cause of death and disability. TBI can result in neuropsychiatric and cognitive problems as well as neurodegenerative pathologies that can appear right after or develop and persist years after injury. METHOD: We conducted a double-blind, randomized, placebo-controlled clinical trial on patients who suffered from TBI three months to three years ago. The patients were randomized to placebo (n = 34) or K-Vie™ group (n = 46) for a treatment period of 3 months. The main primary outcomes include cognitive assessment in the Rey Auditory Verbal Learning Test-Recognition Test (RAVLT), Wechsler adult intelligence Digit Symbol Substitution Test (DSST) and trail-making test part B (TMT-B). Assessments were performed at baseline and at the month 3 follow-up visit. Linear mixed models were carried out to evaluate cognitive changes from baseline across all cognitive assessment tests. RESULT: The current study showed significant (p < 0.05) improvement in cognitive function of patients who were given K-Vie™ compared with placebo across the RAVLT, DSST and TMT-B performance assessments. A larger cohort would be beneficial to further confirm the clinical utility of K-Vie™ and assess its effects in acute phases of TBI.


Asunto(s)
Boswellia , Lesiones Traumáticas del Encéfalo , Adulto , Lesiones Traumáticas del Encéfalo/complicaciones , Lesiones Traumáticas del Encéfalo/tratamiento farmacológico , Lesiones Traumáticas del Encéfalo/psicología , Cognición , Método Doble Ciego , Humanos , Pruebas Neuropsicológicas , Extractos Vegetales/farmacología
14.
Inflammopharmacology ; 30(2): 465-475, 2022 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-35201518

RESUMEN

AIMS: COVID-19 is a significant global threat to public health. Despite the availability of vaccines and anti-viral drugs, there is an urgent need for alternative treatments to help prevent and/or manage COVID-19 symptoms and the underlying dysregulated immune response. We hypothesized that administration of Inflawell® syrup, a Boswellia extract formulation enriched for boswellic acids (BAs), can reduce the excessive or persistent inflammation and thereby prevent disease progression. BAs are medicinally activated triterpenoids found in the resins of Boswellia spp., and possess an immense therapeutic potential due to their anti-inflammatory and immunoregulatory activities. We investigated the effect of Inflawell® syrup, on moderate COVID-19 patients along with the current standard of care treatment. METHODS: A randomized placebo-controlled double-blind clinical trial was conducted, following definitive confirmation of COVID-19. Forty-seven hospitalized patients with moderate COVID-19 were enrolled and received either the Inflawell® syrup or placebo. Clinical symptoms and markers of inflammation were evaluated at baseline and completion of the trial. RESULTS: Our clinical trial revealed an increase in the percentage of oxygen saturation level in patients that received the BAs compared to placebo (P < 0.0001). In addition, the average duration of hospitalization was significantly shorter in the BAs group compared with the placebo group (P < 0.04). Concomitantly, some improvement in the clinical symptoms including cough, dyspnea, myalgia, headache, and olfactory and gustatory dysfunction were detected in the BAs group. Hematologic findings showed a significant decrease in the percentage of neutrophils (P < 0.006) and neutrophil-to-lymphocyte ratio (NLR) levels (P < 0.003), associated with a significant increase in the percentage of lymphocytes in the BAs group compared with the placebo (P < 0.002). Additionally, a significant decrease in CRP, LDH, IL - 6 and TNF - α levels was detected in the BAs group. Following the intervention, fewer patients in the BAs group were PCR-positive for COVID-19 compared to placebo, though not statistically significant. CONCLUSION: Overall, the treatment with Inflawell® resulted in shorter hospital stay, alleviation of COVID-19 clinical symptoms and decline in the level of pro-inflammatory cytokines. TRIAL REGISTRATION: The trial has been registered in  https://www.irct.ir  with unique identifier: IRCT20170315033086N10 ( https://en.irct.ir/trial/51631 ). IRCT is a primary registry in the WHO registry network ( https://www.who.int/clinical-trials-registry-platform/network/primary-registries ).


Asunto(s)
Tratamiento Farmacológico de COVID-19 , Neutrófilos , Método Doble Ciego , Hospitalización , Humanos , Linfocitos , SARS-CoV-2 , Resultado del Tratamiento
18.
Am J Case Rep ; 22: e932752, 2021 Dec 24.
Artículo en Inglés | MEDLINE | ID: mdl-34949754

RESUMEN

BACKGROUND The central nervous system (CNS) is a rare point of origin for mature or immature teratomas. However, immature teratomas are extremely rare. CNS teratomas have been known for poor patient prognosis and recovery and also reduce survival. However, chemoradiotherapy has been reported to increase patient survival. CASE REPORT This study presents a rare giant immature teratoma invading a newborn infant's brain tissue and CNS. The tumor was surgically removed, and in a further 1-year follow-up, it did not need chemotherapy or radiotherapy according to alpha-fetoprotein (aFP) level and other serum markers. The teratoma had affected multiple loci of his brain's left hemisphere, including parietal, frontal, temporal, and occipital lobes. A teratoma was diagnosed lateral to the midline, which is not common in CNS teratomas, as they mainly occur in or near the midline. The tumor was excised completely. The patient was followed up for 1 year, and no further recurrence was observed. CONCLUSIONS Early diagnosis and treatment of immature teratomas are essential in patient prognosis. Chemotherapy is not always needed, but complete surgical removal and patient follow-up are always a necessity. In addition, adequate follow-up of these patients is critical to evaluate their further treatment plan and recurrence risk.


Asunto(s)
Neoplasias Encefálicas , Neoplasias del Sistema Nervioso Central , Teratoma , Neoplasias Encefálicas/terapia , Sistema Nervioso Central , Neoplasias del Sistema Nervioso Central/diagnóstico , Neoplasias del Sistema Nervioso Central/terapia , Humanos , Lactante , Recién Nacido , Pronóstico , Teratoma/diagnóstico , Teratoma/terapia
19.
Caspian J Intern Med ; 12(Suppl 2): S474-S478, 2021.
Artículo en Inglés | MEDLINE | ID: mdl-34760109

RESUMEN

BACKGROUND: Little is known about the development of acute pancreatitis as a complication of corona virus disease of 2019 (COVID-19) infection. This case report describes the presentation of acute pancreatitis in a young woman who then was diagnosed with COVID-19 infection. CASE PRESENTATION: An 18-year old previously healthy woman referred to Imam Raza hospital, Tabriz, Iran with a 3-day history of intermittent and crampy abdominal pain. She had serum amylase of 1288 IU/L and serum lipase of 1541 IU/L. She was diagnosed with acute pancreatitis. She was instructed nil per os (NPO) and serum therapy and also was given pantoprazole, and pethidine for her pain management. The laboratory tests for assessing the etiology of acute pancreatitis were normal. Abdominal and pelvic spiral computed tomography (CT) scan revealed edematous pancreas and enhancing loculi fluid accumulation around pancreas along with the small amount of ascites fluid that all suggest acute pancreatitis. Due to the presentation of fever and COVID-19 pandemic and her potential society exposure, we tested SARS CoV-2 by polymerase chain reaction which was positive. The blood C-reactive protein (CRP) level was 3+ but the chest x-ray showed no findings compatible with COVID-19. Eventually after receiving conservative therapy for her pancreatitis, she was discharged from hospital in the good general condition and she has not experienced any episodes of abdominal pain again. CONCLUSION: This case highlights acute pancreatitis as a suspected complication associated with COVID-19 and the need for further research.

20.
Molecules ; 26(12)2021 Jun 13.
Artículo en Inglés | MEDLINE | ID: mdl-34199320

RESUMEN

Cucurbita moschata Duchesne (Cucurbitaceae) is a plant food highly appreciated for the content of nutrients and bioactive compounds, including polyphenols and carotenoids, which contribute to its antioxidant and antimicrobial capacities. The purpose of this study was to identify phenolic acids and flavonoids of Cucurbita moschata Duchesne using high-performance liquid chromatography-diode array detection-electrospray ionization tandem mass spectrometry (HPLC-DAD-ESI-MS) at different ripening stages (young, mature, ripened) and determine its antioxidant and antimicrobial activities. According to the results, phenolic acids and flavonoids were dependent on the maturity stage. The mature fruits contain the highest total phenolic and flavonoids contents (97.4 mg GAE. 100 g-1 and 28.6 mg QE. 100 g-1).A total of 33 compounds were identified. Syringic acid was the most abundant compound (37%), followed by cinnamic acid (12%) and protocatechuic acid (11%). Polyphenol extract of the mature fruits showed the highest antioxidant activity when measured by DPPH (0.065 µmol TE/g) and ABTS (0.074 µmol TE/g) assays. In the antimicrobial assay, the second stage of ripening had the highest antibacterial activity. Staphylococcus aureus was the most sensitive strain with an inhibition zone of 12 mm and a MIC of 0.75 mg L-1. The lowest inhibition zone was obtained with Salmonella typhimurium (5 mm), and the MIC value was 10 mg L-1.


Asunto(s)
Antiinfecciosos/farmacología , Antioxidantes/farmacología , Cromatografía Líquida de Alta Presión/métodos , Cucurbita/química , Frutas/química , Extractos Vegetales/química , Polifenoles/metabolismo , Antiinfecciosos/química , Antioxidantes/química , Cucurbita/metabolismo , Flavonoides/análisis , Flavonoides/metabolismo , Frutas/metabolismo , Polifenoles/análisis
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