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1.
Spectrochim Acta A Mol Biomol Spectrosc ; 324: 124989, 2025 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-39154403

RESUMO

A newly developed 2H5MA-MOF sensor by covalently linking NH2-MIL-53(Al) with 2'-Hydroxy-5'-methylacetophenon, designed for highly sensitive and selective detection of Cd2+ ions using fluorometric methods. Detailed structural and morphological analyses confirmed the sensor's unique properties. It demonstrated an impressive linear detection range from 0 to 2 ppm, with an exceptionally low detection limit of 5.77 × 10-2 ppm and a quantification limit of 1.75 × 10-1 ppm, indicating its high sensitivity (R2 = 0.9996). The sensor also responded quickly, detecting Cd2+ within just 30 s at pH 4. We successfully tested it on real samples of tap water and human blood plasma, achieving recovery rates between 96 % and 104 %. The accuracy of these findings was further validated by comparison with ICP-OES. Overall, the 2H5MA-MOF sensor shows great potential for fast, ultra-sensitive, and reliable detection of Cd2+ ions, making it a promising tool for environmental and biomedical applications.


Assuntos
Cádmio , Água Potável , Limite de Detecção , Estruturas Metalorgânicas , Cádmio/sangue , Cádmio/análise , Humanos , Estruturas Metalorgânicas/química , Água Potável/análise , Poluentes Químicos da Água/análise , Poluentes Químicos da Água/sangue , Íons/sangue , Concentração de Íons de Hidrogênio
2.
Pharmacotherapy ; 2024 Sep 03.
Artigo em Inglês | MEDLINE | ID: mdl-39225417

RESUMO

Obesity continues to be a significant global health challenge, affecting over 800 million individuals worldwide. Traditional management strategies, including dietary, exercise, and behavioral interventions, often result in insufficient and unsustainable weight loss. Lifestyle modification remains the cornerstone of obesity management, providing the foundation for other strategies. While options such as bariatric surgery remain an effective intervention for severe obesity, it is associated with its own set of risks and is typically reserved for patients who have not achieved the desired results with pharmacotherapy and lifestyle interventions. Incretin hormone agonists represent a significant advancement in the pharmacotherapy of obesity, offering substantial weight reduction and cardiometabolic benefits. Agents like liraglutide, semaglutide, and tirzepatide supported by key clinical trials such as Satiety and Clinical Adipose Liraglutide Evidence (SCALE), Semaglutide Treatment Effect in People with Obesity (STEP) program trials, and Tirzepatide Once Weekly for the Treatment of Obesity (SURMOUNT-1) have demonstrated remarkable efficacy in promoting weight loss and improving metabolic outcomes. Additionally, novel therapies, including dual and triple incretin agonists, are under investigation and hold the potential for further advancements in obesity treatment. These novel therapies can be categorized by their mechanisms of action and route of administration into oral glucagon-like peptide-1 (GLP-1) receptor agonists, triple agonists (targeting GLP-1, glucose-dependent insulinotropic polypeptide [GIP], and glucagon receptors), and glucagon receptor-GLP-1 receptor co-agonists. Other innovative approaches include oral GIP-GLP-1 receptor co-agonists, and the combination of long-acting amylin receptor agonists with GLP-1 receptor agonists. The ongoing development of incretin-based therapies and the expanding availability of currently available agents are expected to enhance clinical outcomes further and reduce the burden of obesity-related health complications. This review aims to discuss the mechanisms and efficacy of current and emerging incretin hormone agonists for obesity management.

3.
J Evid Based Integr Med ; 29: 2515690X241271978, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39118572

RESUMO

The antibiofilm and antimicrobial properties of tropical honey types including Malaysian stingless bee honey remain explicitly unexplored when compared with Apies honey. The antibiofilm and antimicrobial activities of the Malaysian Trigona honey were characterized with two stinging bee honey types (Centaurea hyalolepis and Citrus honeys) from Jordan. The antibiofilm and antimicrobial investigations were conducted on a set of seven microbial strains; five bacterial species of Pseudomonas aeruginosa ATCC 10145, Streptococcus pyogenes ATCC 19615, Staphylococcus aureus ATCC 25923, Escherichia coli ATCC 25922, Klebsiella pneumoniae ATCC 13883, and two fungal strains Candida albicans ATCC 10231 and Candida krusei ATCC 14243. The antimicrobial investigations revealed a broad spectrum activity for Trigona honey against Gram-positive, Gram-negative, and fungal strains over the two honey types. One-way ANOVA showed a significant difference (p < 0.001) in the zone of inhibition ranging from 9 to 25 mm and minimum inhibition activity (MIC) ranged from 9.4-29.6% (w/v) against the microbial strains. Moreover, the addition of honey to established biofilms has induced a degradation activity in the biofilm mass. Two-way ANOVA showed a significant biofilm degradation proportion (p < 0.001) ranging from 1.3% to 91.3% following treatment with Trigona honey and the other honey types in relevance to the concentration ranging from 10% to 50% (w/v). Moreover, the antibiofilm activity was highly consistent with MIC affecting bacterial growth inhibition. In conclusion, a robust antimicrobial and antibiofilm activity for Trigona stingless bee honey over the stinging bee Centaurea hyalolepis and Citrus honeys is noticed which endows the usage of Trigona honey in the antimicrobial industry.


Assuntos
Anti-Infecciosos , Biofilmes , Citrus , Mel , Testes de Sensibilidade Microbiana , Mel/análise , Biofilmes/efeitos dos fármacos , Animais , Abelhas , Citrus/química , Anti-Infecciosos/farmacologia , Centaurea/química , Bactérias/efeitos dos fármacos , Antibacterianos/farmacologia
4.
Sci Rep ; 14(1): 17863, 2024 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-39090175

RESUMO

The objective measurements of the real-world optimization problems are mostly subject to noise which occurs due to several reasons like human measurement or environmental factors. The performance of the optimization algorithm gets affected if the effect of noise is higher than the negligible limit. The previous noise handling optimization algorithms use a large population size or multiple sampling at same region which increases the total count of function evaluations, and few methods work for a particular problem type. To address the above challenges, a Differential Evolution based Noise handling Optimization algorithm (NDE) to solve and optimize noisy bi-objective optimization problems is proposed. NDE is a Differential Evolution (DE) based optimization algorithm where the strategies for trial vector generation and the control parameters of DE algorithm are self-adapted using fuzzy inference system to improve the population diversity along the evolution process. In NDE, explicit averaging based method for denoising is used when the noise level is higher than negligible limit. Extending noise handling method enhances the performance of the optimization algorithm in solving real world optimization problems. To improve the convergence characteristics of the proposed algorithm, a restricted local search procedure is proposed. The performance of NDE algorithm is experimented using DTLZ and WFG problems, which are benchmark bi-objective optimization problems. The obtained results are compared with other SOTA algorithm using modified Inverted Generational Distance and Hypervolume performance metrics, from which it is confirmed that the proposed NDE algorithm is better in solving noisy bi-objective problems when compared to the other methods. To further strengthen the claim, statistical tests are conducted using the Wilcoxon and Friedman rank tests, and the proposed NDE algorithm shows significance over the other algorithms rejecting the null hypothesis.

5.
Cureus ; 16(8): e68042, 2024 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-39206333

RESUMO

Back pain is the leading cause of disability globally and results in a substantial medical and economic burden. Epidural steroid injections (ESIs) have been widely used as a treatment for back pain with radiculopathy of various etiologies. Ultrasound guidance (UG) for delivering ESIs can reduce costs and facilitate the procedure in resource-limited settings compared to the current standard technique of using fluoroscopic guidance (FG). This scoping review aimed to compare the clinical outcomes between UG and FG ESIs in the treatment of radicular pain. Systematic searches of Embase, Ovid Medline, Scopus, CENTRAL (Cochrane Central Register of Controlled Trials), CDSR (Cochrane Database of Systematic Reviews), and ClinicalTrials.gov were conducted in accordance with PRISMA-ScR (Preferred Reporting Items for Systematic reviews and Meta-Analyses extension for scoping reviews) guidelines. Randomized controlled trials (RCTs) and comparative observational studies investigating the outcomes between UG and FG ESIs in the treatment of radicular pain were included. The risk of bias for included RCTs was assessed using the Cochrane Collaboration risk-of-bias tool. From 1,659 potentially relevant publications, eight studies (five RCTs and three retrospective comparative studies) were included. Five of the studies were conducted in the Republic of Korea, one in China, one in India, and one in Egypt. All studies reported no significant difference between UG and FG ESIs in success rate, pain index, and postoperative disability (p > 0.05). One study reported increased intravascular injections in the FG group, but this did not reach statistical significance (p > 0.05). One study reported decreased needle-placement time in the UG group (p < 0.001). One study reported decreased total operation time in the UG group (p < 0.05). Overall, treatment outcomes and adverse events profile are comparable between UG and FG ESIs for radicular pain. UG ESIs reduce costs, minimize radiation exposure, facilitate vessel identification, prevent injury, and potentially save intraoperative time while offering the same benefits as FG injections. Future studies should focus on long-term outcomes, cost-effectiveness, and the impact of UG ESIs on patient satisfaction and quality of life.

6.
Biomed Phys Eng Express ; 10(5)2024 Aug 28.
Artigo em Inglês | MEDLINE | ID: mdl-39142303

RESUMO

Radiation therapy plays a pivotal role in modern cancer treatment, demanding precise and accurate dose delivery to tumor sites while minimizing harm to surrounding healthy tissues. Monte Carlo simulations have emerged as indispensable tools for achieving this precision, offering detailed insights into radiation transport and interaction at the subatomic level. As the use of scintillation and luminescence dosimetry becomes increasingly prevalent in radiation therapy, there arises a need for validated Monte Carlo tools tailored to optical photon transport applications. In this paper, an evaluation process of the TOPAS (TOol for PArticle Simulation) Monte Carlo tool for Cerenkov light generation, optical photon transport and radioluminescence based dosimetry is presented. Three distinct sources of validation data are utilized: one from a published set of experimental results and two others from simulations performed with the Geant4 code. The methodology employed for evaluation includes the selection of benchmark experiments, making use of opt3 and opt4 Geant4 physics models and simulation setup, with observed slight discrepancies within the calculation uncertainties. Additionally, the complexities and challenges associated with modeling optical photons generation through luminescence or Cerenkov radiation and their transport are discussed. The results of our evaluation suggests that TOPAS can be used to reliably predict Cerenkov generation, luminescence phenomenon and the behavior of optical photons in common dosimetry scenarios.


Assuntos
Simulação por Computador , Método de Monte Carlo , Fótons , Radiometria , Radiometria/métodos , Humanos , Luminescência , Medições Luminescentes/métodos , Algoritmos , Software
7.
Trop Biomed ; 41(2): 220-223, 2024 Jun 01.
Artigo em Inglês | MEDLINE | ID: mdl-39154277

RESUMO

Vibrio vulnificus infection is associated with high morbidity and mortality in high-risk patients. Poor prognoses could lead to >50% mortality rate. The present report describes a case of V. vulnificus bacteremia in a cirrhotic patient with underlying hepatitis C. He presented with generalised abdominal pain associated with distention and could not ambulate for one week. He also complained of fever for six days and pruritus for 10 days. Tea-coloured urine was noted in continuous bag drainage. The abdomen was distended but soft, with mild tenderness palpated over the left lumbar and iliac region. Blood investigation indicated ongoing infection and inflammation. The aerobic blood culture was identified using the matrix-assisted laser desorption/ionisation-time of flight mass spectrometry and confirmed via 16S rDNA sequencing as V. vulnificus. Multilocus sequence typing of the isolated V. vulnificus revealed a novel sequence type, ST540. The patient responded well to the intravenous cefoperazone and was then discharged with a four day-course of oral ciprofloxacin, 500 mg twice daily after completing the intravenous cefoperazone for 10 days. Clinical history and physical examination are important for early antibiotic therapy initiation and appropriate surgical intervention. Furthermore, bacterial strain typing is also essential for epidemiological surveillance and potentially anticipating the pathogen's virulence traits, which are vital in controlling and preventing the spread of infection.


Assuntos
Vibrioses , Vibrio vulnificus , Humanos , Masculino , Vibrio vulnificus/isolamento & purificação , Vibrioses/microbiologia , Bacteriemia/microbiologia , Antibacterianos/uso terapêutico , RNA Ribossômico 16S/genética , Hepatite C/complicações , Tipagem de Sequências Multilocus , Pessoa de Meia-Idade , Cirrose Hepática/complicações
8.
Infect Drug Resist ; 17: 3225-3240, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39081458

RESUMO

Background: The incidence of microorganisms with extended-spectrum beta-lactamase (ESBL) is on the rise, posing a significant public health concern. The current application of machine learning (ML) focuses on predicting bacterial resistance to optimize antibiotic therapy. This study employs ML to forecast the occurrence of bacteria that generate ESBL and demonstrate resistance to multiple antibiotics (MDR). Methods: Six popular ML algorithms were initially trained on antibiotic resistance test patient reports (n = 489) collected from Al-Hussein/Salt Hospital in Jordan. Trained outcome models predict ESBL and multidrug resistance profiles based on microbiological and patients' clinical data. The results were utilized to select the optimal ML method to predict ESBL's most associated features. Results: Escherichia coli (E. coli, 82%) was the most commonly identified microbe generating ESBL, displaying multidrug resistance. Urinary tract infections (UTIs) constituted the most frequently observed clinical diagnosis (68.7%). Classification and Regression Trees (CART) and Random Forest (RF) classifiers emerged as the most effective algorithms. The relevant features associated with the emergence of ESBL include age and different classes of antibiotics, including cefuroxime, ceftazidime, cefepime, trimethoprim/ sulfamethoxazole, ciprofloxacin, and gentamicin. Fosfomycin nitrofurantoin, piperacillin/tazobactam, along with amikacin, meropenem, and imipenem, had a pronounced inverse relationship with the ESBL class. Conclusion: CART and RF-based ML algorithms can be employed to predict the most important features of ESBL. The significance of monitoring trends in ESBL infections is emphasized to facilitate the administration of appropriate antibiotic therapy.

9.
Anim Reprod Sci ; 268: 107562, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39032362

RESUMO

This study aimed at scrutinizing efficiency of incorporating L-carnitine or M. oleifera leaves extract into semen diluent on improving cryopreservation capacity and in vitro fertilization ability of buck spermatozoa. Ejaculates (n=48) were collected by an artificial vagina from six adult Damascus bucks twice weekly during the breeding season (September-October). Following initial evaluation, ejaculates of each collection session from the same bucks were pooled, diluted (1:10) with glycerolized (3 % glycerol, v/v) tris-citric acid egg yolk diluent and were split into three aliquots. The first aliquot served as control, whereas the second and third aliquots were supplemented with 4 µL/mL L-carnitine and 400 µL/mL moringa leaves extract (v/v), respectively. Thereafter, all specimens were processed for cryopreservation and were stored in liquid nitrogen (-196 °C) for 12 months before post-thaw sperm criteria were analyzed by a computer-assisted sperm analysis (CASA) system. Integrity of sperm DNA post thawing was visualized in all semen groups by fluorescence imaging, and in vitro fertilization ability of spermatozoa was also determined. Inclusion of L-carnitine or moringa leaves extract into the diluent improved (P<0.05) post-thaw sperm physical, morphofunctional and kinematic attributes, whilst maintaining (P<0.05) integrity of sperm DNA throughout the freezing and thawing cycle. Consequently, both supplemented groups yielded higher (P<0.05) in vitro fertilization rates compared to control. These results accentuate the protective roles of these antioxidants on buck sperm against consequences of cryopreservation-induced oxidative stress, hence ameliorating post-thaw sperm quality and fertilization competence. This is crucial for successful application of AI and IVF in goat selective breeding programs.


Assuntos
Carnitina , Criopreservação , Fertilização in vitro , Cabras , Moringa oleifera , Extratos Vegetais , Folhas de Planta , Preservação do Sêmen , Masculino , Carnitina/farmacologia , Criopreservação/veterinária , Criopreservação/métodos , Animais , Preservação do Sêmen/veterinária , Preservação do Sêmen/métodos , Extratos Vegetais/farmacologia , Fertilização in vitro/veterinária , Fertilização in vitro/métodos , Moringa oleifera/química , Folhas de Planta/química , Cabras/fisiologia , Espermatozoides/efeitos dos fármacos , Espermatozoides/fisiologia , Crioprotetores/farmacologia , Análise do Sêmen/veterinária
10.
Am J Infect Control ; 2024 Jul 03.
Artigo em Inglês | MEDLINE | ID: mdl-38969070

RESUMO

BACKGROUND: The objective of this study was to describe the prevalence, characteristics, and risk factors of coronavirus disease-2019 (COVID-19) infection among health care workers (HCWs) at King Abdulaziz University Hospital, Jeddah, Saudi Arabia. METHODS: A prospective cross-sectional study of HCWs confirmed to have COVID-19 infection from March 1, 2020 to December 31, 2022. RESULTS: A total of 746 HCWs were diagnosed with COVID-19. Patients' age ranged from 22 to 60 years with a mean ± standard deviation of 37.4 ± 8.7 years. The infection was community-acquired in 584 (78.3%) HCWs. The vast majority (82.6%) of the infected HCWs had no comorbidities. Nurses (400/746 or 53.6%) represented the largest professional group, followed by physicians (128/746 or 17.2%), administrative staff (125/746 or 16.8%), respiratory therapists (54/746 or 7.2%), and physiotherapists (39/746 or 5.2%). Symptoms included fever (64.1%), cough (55.6%), sore throat (44.6%), headache (22.9%), runny nose (19.6%), shortness of breath (19.0%), fatigue (12.7%), body aches (11.4%), diarrhea (10.9%), vomiting (4.4%), and abdominal pain (2.8%). Most (647 or 86.7%) patients were managed as outpatients. Four (0.5%) HCWs died. CONCLUSIONS: HCWs face a dual risk of SARS-CoV-2 infection, both from community exposure and within the hospital setting. Comprehensive infection control strategies are needed to protect HCWs both inside and outside the hospital environment.

11.
Heliyon ; 10(13): e33160, 2024 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-39035494

RESUMO

In the present work, two hybrid series of pyrazole-clubbed pyrimidine and pyrazole-clubbed thiazole compounds 3-21 from 4-acetyl-1,3-diphenyl-1H-pyrazole-5(4H)-ole 1 were synthesized as novel antimicrobial agents. Their chemical structures were thoroughly elucidated in terms of spectral analyses such as IR, 1H NMR, 13C NMR and mass spectra. The compounds were in vitro evaluated for their antimicrobial efficiency against various standard pathogen strains, gram -ive bacteria (Pseudomonas aeruginosa, Klebsiella pneumonia), gram + ive bacteria (MRSA, Bacillus subtilis), and Unicellular fungi (Candida albicans) microorganisms. The ZOI results exhibited that most of the tested molecules exhibited inhibition potency from moderate to high. Where compounds 7, 8, 12, 13 and 19 represented the highest inhibition potency against most of the tested pathogenic microbes comparing with the standard drugs. In addition, the MIC results showed that the most potent molecules 7, 8, 12, 13 and 19 showed inhibition effect against most of the tested microbes at low concentration. Moreover, the docking approach of the newly synthesized compounds against DNA gyrase enzyme was performed to go deeper into their molecular mechanism of antimicrobial efficacy. Further, computational investigations to calculate the pharmacokinetics parameters of the compounds were performed. Among them 7, 8, 12, 13 and 19 are the most potent compounds revealed the highest inhibition efficacy against most of the tested pathogenic microbes comparing with the standard drugs.

12.
Heliyon ; 10(11): e31841, 2024 Jun 15.
Artigo em Inglês | MEDLINE | ID: mdl-38845981

RESUMO

The construction sector is more complicated and prone to risk than many other industries due to the size of the projects and the financial capital involved. Arranging insurance is the prudent course of action for risk management in the construction sector. There is a lack of clarity in insurance policies for public construction projects in the Kingdom of Saudi Arabia (KSA), which poses additional risks to all involved contracting parties. The aim of this research is to evaluate insurance policies in the KSA's public construction projects to identify the key deficiencies and obstacles and provide a road map for improvement in the insurance sector concerning insurance against financial losses, professional liability, defects' liability, hidden defects, and others. Forty-two contractors and forty-two owners in Saudi Arabia were surveyed, using a questionnaire to gather information for the study about their knowledge of and attitudes regarding risk transfer through insurance (professional liability, defects liability, and hidden defects). The study also covers the selection criteria for insurance policies for projects that potentially shift risk to the construction sector. Ten criteria were also examined as potential sources of liability issues and suggested as potential remedies in KSA. The findings indicate that the duty and liability of engineers and those participating in these projects can be offset by engineers' insurance against professional errors and hidden flaws, and by the construction industry's clear liability policy. Additionally, the research is envisaged to contribute to construction projects' overall quality and safety, ensuring that robust legal and financial safeguards protect all stakeholders.

13.
Sultan Qaboos Univ Med J ; 24(2): 216-220, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38828249

RESUMO

Objectives: This study aimed to report any suspected adverse drug reactions (ADRs) experienced by all vaccinated staff and students in a tertiary teaching hospital following COVID-19 vaccination. Methods: This retrospective study was conducted during the COVID-19 vaccination campaign at Sultan Qaboos University and Hospital in Muscat, Oman, from August to September 2021. An online survey was generated and sent to all staff and students via email and text messages. An announcement was made on the hospital website with a link to the survey. Results: A total of 8,421 individuals reported being vaccinated at least once with a total of 11,468 doses administered from January to July 2021; 8,014 staff and students received the Pfizer-Biotech vaccine while 3,454 staff and students received the Oxford-AstraZeneca vaccine. The survey received a total of 3,275 responses (response rate = 38.8%). Of these, 741 individuals (22.6%) experienced an ADR after vaccination and 67.2% (n = 498) were females (P <0.001). The majority of the ADRs reported were fever and chills (19.7%) followed by localised pain and swelling at the injection site (18.8%). Other ADRs such as hair loss (0.5%) were reported, and one staff/student reported a clot in the right leg. Among the responders, 27.0% considered their ADRs as mild while 25.0% considered them as severe. Conclusions: In the study cohort, mild symptoms of COVID-19 vaccines were reported. Females experienced more ADRs compared to males. Long-term observation of ADRs to the vaccines and follow-up monitoring should be done on subjects to preclude any unwanted effects.


Assuntos
Vacinas contra COVID-19 , COVID-19 , Adulto , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Adulto Jovem , Sistemas de Notificação de Reações Adversas a Medicamentos/estatística & dados numéricos , COVID-19/prevenção & controle , COVID-19/epidemiologia , Vacinas contra COVID-19/efeitos adversos , Vacinas contra COVID-19/administração & dosagem , Hospitais Universitários/estatística & dados numéricos , Omã/epidemiologia , Estudos Retrospectivos , Inquéritos e Questionários
14.
Int J Biol Macromol ; 270(Pt 2): 132385, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38754668

RESUMO

CNCs are intensively studied to reinforce biocomposites. However, it remains a challenge to homogeneously disperse the CNC in biocomposites for a smooth film surface. Mechanochemical treatment via ultrasonication in deep eutectic solvent (DES) generated a stable dispersion of CNC before incorporation into carrageenan biocomposite. Shifted peaks of choline chloride (ChCl) methylene groups to 3.95-3.98 ppm in 1H NMR indicated a formation of eutectic mixture between the hydrogen bond acceptor (HBA) and hydrogen bond donor (HBD) at the functional group of CH3···OH. The swelling of CNC in the DES was proven by the formation of intermolecular H-bond at a length of 2.46 Å. The use of DES contributed to a good dispersion of CNC in the solution which increased zeta potential by 43.2 % compared to CNC in deionized water. The ultrasonication amplitude and feed concentration were varied for the best parameters of a stable dispersion of CNC. The crystallinity of 1 wt% of CNC at 20 % sonication amplitude improved from 76 to 81 %. The high crystallinity of CNCDES resulted in an increase in film tensile and capsule loop strength of Carra-CNCDES by 20.7 and 19.4 %, respectively. Improved dispersion of CNCDES reduced the surface roughness of the biocomposite by 21.8 %. H-bond network in CNCDES improved the biocomposite properties for an ingenious reinforcement material.


Assuntos
Carragenina , Celulose , Nanopartículas , Carragenina/química , Celulose/química , Nanopartículas/química , Sonicação/métodos , Ligação de Hidrogênio , Solventes/química , Resistência à Tração , Materiais Biocompatíveis/química
15.
Reprod Domest Anim ; 59(5): e14613, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38812417

RESUMO

Spermatozoa can experience negative changes when subjected to freezing and thawing, including lowered motility, viability and acrosome response. Herein, the effects of different concentrations of soybean lecithin nanoparticles on cryopreserved Holstein bull semen were examined. Semen was collected, cryopreserved and utilized for sperm kinetic parameter analysis following dilution, equilibration and thawing with 0.5% soybean lecithin (E1), the control extender, and 0.75% (E2), 0.5% (E3), 0.25% (E4) and 0.125% (E5) of lecithin nanoparticles. Results revealed that following dilution, the progressive motility (PM) at E3, E4 and E5 of lecithin nanoparticles was higher (p < .05) than it was for E2. After equilibration, compared to the E1, E2, and E3 values, the PM, vitality, normal morphology, membrane integrity and intact acrosome values at the E5 were consistently greater (p < .05). Comparing the percentages of intact acrosome and membrane integrity at E2 and E3 to E4 and E5, a substantial decrease (p < .05) was seen. Following thawing, the percentage of PM improved at E2 and E5, even though their mean PM values were similar (p > .05) compared to E1, E3 and E4. Vigour and progression parameters of sperm (DAP, DCL, DSL, VAP, VCL, VSL and STR) at E5 were higher (p < .05) than those at E1, E2, E3 and E4. In conclusion, the cryopreserved sperm from Holstein bulls revealed outstanding properties both after equilibration and after thawing with 0.125% lecithin nanoparticles, and they were sensitive to high dosages.


Assuntos
Criopreservação , Glycine max , Lecitinas , Nanopartículas , Preservação do Sêmen , Sêmen , Animais , Bovinos , Masculino , Inseminação Artificial , Análise do Sêmen , Motilidade dos Espermatozoides , Espermatozoides , Preservação do Sêmen/métodos
16.
SAR QSAR Environ Res ; 35(5): 391-410, 2024 May.
Artigo em Inglês | MEDLINE | ID: mdl-38769919

RESUMO

Alpinia officinarum is a commonly used spice with proven folk uses in various traditional medicines. In the current study, six compounds were isolated from its rhizomes, compounds 1-3 were identified as diarylheptanoids, while 4-6 were identified as flavonoids and phenolic acids. The isolated compounds were subjected to virtual screening against α-glucosidase, butyrylcholinesterase (BChE), and acetylcholinesterase (AChE) enzymes to evaluate their potential antidiabetic and anti-Alzheimer's activities. Molecular docking and dynamics studies revealed that 3 exhibited a strong binding affinity to human a α- glucosidase crystal structure compared to acarbose. Furthermore, 2 and 5 demonstrated high potency against AChE. The virtual screening results were further supported by in vitro assays, which assessed the compounds' effects on α-glucosidase, cholinesterases, and their antioxidant activities. 5-Hydroxy-7-(4-hydroxy-3-methoxyphenyl)-1-phenylheptan-3-one (2) showed potent antioxidant effect in both ABTs and ORAC assays, while p-hydroxy cinnamic acid (6) was the most potent in the ORAC assay. In contrary, kaempferide (4) and galangin (5) showed the most potent effect in metal chelation assay. 5-Hydroxy-1,7-diphenylhepta-4,6-dien-3-one (3) and 6 revealed the most potent effect as α-glucosidase inhibitors where compound 3 showed more potent effect compared to acarbose. Galangin (5) revealed a higher selectivity to BChE, while 2 showed the most potent activity to (AChE).


Assuntos
Acetilcolinesterase , Alpinia , Antioxidantes , Butirilcolinesterase , Inibidores da Colinesterase , Inibidores de Glicosídeo Hidrolases , Simulação de Acoplamento Molecular , Rizoma , Alpinia/química , Inibidores da Colinesterase/farmacologia , Inibidores da Colinesterase/química , Inibidores da Colinesterase/isolamento & purificação , Inibidores de Glicosídeo Hidrolases/farmacologia , Inibidores de Glicosídeo Hidrolases/química , Inibidores de Glicosídeo Hidrolases/isolamento & purificação , Antioxidantes/farmacologia , Antioxidantes/química , Antioxidantes/isolamento & purificação , Rizoma/química , Butirilcolinesterase/metabolismo , Acetilcolinesterase/metabolismo , alfa-Glucosidases/metabolismo , Relação Quantitativa Estrutura-Atividade , Flavonoides/química , Flavonoides/farmacologia , Flavonoides/isolamento & purificação , Hidroxibenzoatos/farmacologia , Hidroxibenzoatos/química , Hidroxibenzoatos/isolamento & purificação , Humanos
17.
ACS Synth Biol ; 13(6): 1851-1865, 2024 Jun 21.
Artigo em Inglês | MEDLINE | ID: mdl-38787439

RESUMO

Saccharomyces boulardii (Sb) is an emerging probiotic chassis for delivering biomolecules to the mammalian gut, offering unique advantages as the only eukaryotic probiotic. However, precise control over gene expression and gut residence time in Sb have remained challenging. To address this, we developed five ligand-responsive gene expression systems and repaired galactose metabolism in Sb, enabling inducible gene expression in this strain. Engineering these systems allowed us to construct AND logic gates, control the surface display of proteins, and turn on protein production in the mouse gut in response to dietary sugar. Additionally, repairing galactose metabolism expanded Sb's habitat within the intestines and resulted in galactose-responsive control over gut residence time. This work opens new avenues for precise dosing of therapeutics by Sb via control over its in vivo gene expression levels and localization within the gastrointestinal tract.


Assuntos
Galactose , Probióticos , Saccharomyces boulardii , Animais , Camundongos , Galactose/metabolismo , Saccharomyces boulardii/genética , Saccharomyces boulardii/metabolismo , Trato Gastrointestinal/microbiologia , Trato Gastrointestinal/metabolismo , Dieta
19.
Diabetes Metab Syndr Obes ; 17: 2075-2083, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38799281

RESUMO

Purpose: Difficulty falling or staying asleep are considered sleep disorders, and these are common among people with type 2 diabetes mellitus (T2DM) and obesity. The presence of sleep disorders may cause poor glycemic control among this population. We therefore designed this study to assess sleep disorders among patients with T2DM and obesity. Patients and Methods: This cross-sectional study examined the prevalence of sleep disorders in 148 patients with T2DM and obesity at a hospital in Taif, Saudi Arabia using a validated questionnaire. Results: Among those patients who have been involved in this study, we found a moderate level of sleep disorders and disturbances. The average sleep disorder assessment score for the patients with T2DM and obesity was 2.8 ± 1.4. Additionally, the average score for the sleep pattern assessment was 2.7 ± 1.3 and 2.9 ± 1.5 for symptoms of lack of sleep. Our study also revealed that those patients also had suboptimal weight and glycemic control. Conclusion: These findings demonstrate that patients with T2DM and obesity are at a higher risk of developing sleep disorders. Therefore, these patients need to be screened for sleep disorders to avoid further diabetes-related complications and to have an early lifestyle intervention.

20.
West Afr J Med ; 41(3): 293-300, 2024 Mar 29.
Artigo em Inglês | MEDLINE | ID: mdl-38788122

RESUMO

BACKGROUND: Post-abortion care (PAC) is a crucial component of emergency obstetric care, and many of the primary health care centres (PHC) in the internally displaced person (IDP) camps and host communities in Maiduguri lack it. Improved access to high-quality PACs is essential for meeting the reproductive health needs of the IDPs and reducing the maternal morbidity and mortality that can result from miscarriages. OBJECTIVE: To determine the trend in managing miscarriages in the IDP camps and host communities in Maiduguri and the impact of the volunteer obstetrician scheme (VOS) on PAC. METHODOLOGY: We conducted a longitudinal study in selected PHCs serving IDP camps and host communities in Maiduguri. The study spanned five (5) years, and we compared the management of miscarriages and PAC services one year before the VOS project, two years during the project and two years after the project. During the two-year VOS project, staff manning the PHCs had supportive supervision with hands-on training on PAC. Chi-square for trend and odd ratio with a 95% confidence interval was used as appropriate to compare the trend in PAC services provided during the study period. RESULTS: One thousand eight hundred and eight (1808) women presented with miscarriages, and 1562 (86.4%) required uterine evacuation. Medical evacuation with oral misoprostol was offered to 974 (62.4%), and manual vacuum aspiration (MVA) was used in 422 (27.0%) of the women who needed uterine evacuation. There was a statistically significant rise in the use of medical evacuation throughout the study period (52.2% before VOS, and 71.4% by the second year of VOS) with ꭓ2=41.64 and P<0.001. In comparison, the use of MVA fell from 38.6% in 2015 to 27.7% in 2019 (ꭓ2=34.74 and P<0.001). Similar rising trends were also observed in postabortion family planning acceptance (ꭓ2=22.27, P<0.001). CONCLUSION: The Volunteer Obstetrician Scheme project appears to have improved PAC services, especially medical evacuation and family planning uptake in the PHCs in IDP camps and host communities in Maiduguri, Borno State, Nigeria. We recommend task shifting of PAC services and periodic supportive supervision to ensure the quality of care.


CONTEXTE: Les soins après avortement (PAC) sont une composante cruciale des soins obstétricaux d'urgence, et de nombreux centres de soins de santé primaires (PHC) dans les camps de personnes déplacées internes (PDI) et les communautés d'accueil à Maiduguri en sont dépourvus. Un accès amélioré à des PAC de haute qualité est essentiel pour répondre aux besoins de santé reproductive des PDI et réduire la morbidité et la mortalité maternelles qui peuvent résulter des fausses couches. OBJECTIF: Déterminer la tendance dans la gestion des fausses couches dans les camps de PDI et les communautés d'accueil à Maiduguri et l'impact du Programme de bénévoles obstétriciens (VOS) sur la PAC. MÉTHODOLOGIE: Nous avons mené une étude longitudinale dans des PHC sélectionnés desservant des camps de PDI et des communautés d'accueil à Maiduguri. L'étude a duré cinq (5) ans, et nous avons comparé la gestion des fausses couches et les services de PAC un an avant le projet VOS, deux ans pendant le projet et deux ans après le projet. Pendant les deux ans du projet VOS, le personnel des PHC a bénéficié d'une supervision avec formation pratique sur la PAC. Le chi carré pour la tendance et le rapport de cotes avec un intervalle de confiance de 95% ont été utilisés, le cas échéant, pour comparer la tendance des services de PAC fournis pendant la période de l'étude. RÉSULTATS: Mille huit cent huit (1808) femmes ont présenté des fausses couches, et 1562 (86,4%) ont nécessité une évacuation utérine. Une évacuation médicale avec du misoprostol oral a été proposée à 974 (62,4%), et l'aspiration manuelle sous vide (AMV) a été utilisée chez 422 (27,0%) des femmes ayant besoin d'une évacuation utérine. On a observé une augmentation statistiquement significative de l'utilisation de l'évacuation médicale tout au long de la période de l'étude (52,2% avant le VOS et 71,4% la deuxième année du VOS) avec ꭓ2=41,64 et P<0,001. En revanche, l'utilisation de l'AMV est passée de 38,6% en 2015 à 27,7% en 2019 (ꭓ2=34,74 et P<0,001). Des tendances similaires à la hausse ont également été observées dans l'acceptation de la planification familiale après avortement (ꭓ2=22,27, P<0,001). CONCLUSION: Le projet de Programme de bénévoles obstétriciens semble avoir amélioré les services de PAC, en particulier l'évacuation médicale et l'acceptation de la planification familiale dans les PHC des camps de PDI et des communautés d'accueil à Maiduguri, dans l'État de Borno, au Nigéria. Nous recommandons de déléguer les services de PAC et une supervision de soutien périodique pour garantir la qualité des soins. MOTS-CLÉS: Communauté d'accueil, Camps de PDI, Aspiration manuelle sous vide, Évacuation médicale, Misoprostol, Soins après avortement.


Assuntos
Aborto Espontâneo , Atenção Primária à Saúde , Voluntários , Humanos , Feminino , Nigéria , Gravidez , Aborto Espontâneo/epidemiologia , Aborto Espontâneo/terapia , Estudos Longitudinais , Adulto , Obstetrícia/métodos , Aborto Induzido/métodos , Aborto Induzido/tendências , Adulto Jovem , Obstetra
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