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2.
Medicine (Baltimore) ; 103(44): e40395, 2024 Nov 01.
Artículo en Inglés | MEDLINE | ID: mdl-39496011

RESUMEN

Asthma is a chronic inflammatory condition leading to intermittent airway narrowing and obstruction. Although millions suffer from asthma globally, there is limited data from African countries, particularly Sudan. This study addresses the gap in research on asthma knowledge, attitudes, and practices among the adults in Shendi locality, Northern Sudan. This cross-sectional, community-based study was conducted in Kabushiya village, Shendi, Sudan, involving 148 participants selected through multistage random sampling. Data were collected via face-to-face interviews using a validated, structured questionnaire. Statistical analyses included Mann-Whitney, Kruskal-Wallis, Chi-square, Fisher exact tests, and multiple linear regression. Participants demonstrated high levels of knowledge, positive attitudes, and good practices regarding asthma. Knowledge scores were significantly associated with marital status, education, occupation, and income (P values: .040, .003, .000, and .006, respectively), with the highest medians among divorced individuals, those with higher education, professional workers, and people earning <50,000 SDGs (medians: 17, 16, 17, and 16, respectively). Attitude scores varied significantly by marital status, education, occupation, and family asthma history (P values: .001, .000, .003, and .016, respectively), with highest scores among divorced individuals, those with high school or higher education, professionals, and those with a first-degree relative with asthma (medians: 6, 5, 5, and 5, respectively). Patient practice scores differed by marital status and income (P values: .026 and .006, respectively), with higher scores among singles and those earning <50,000 SDGs. Co-patient practice scores were significantly influenced by occupation, personal or familial asthma experience, and family asthma status (P values: .026, .003, and .000, respectively). No significant differences were observed in co-patient practice scores between groups. The study highlights a generally good level of asthma knowledge and positive attitudes among participants, with some variability in practices based on socio-demographic factors. These findings emphasize the need for targeted education and intervention programs to improve asthma management in rural Sudan.


Asunto(s)
Asma , Conocimientos, Actitudes y Práctica en Salud , Humanos , Asma/epidemiología , Asma/psicología , Sudán , Estudios Transversales , Masculino , Adulto , Femenino , Persona de Mediana Edad , Adulto Joven , Encuestas y Cuestionarios , Factores Socioeconómicos
3.
Clin Case Rep ; 12(11): e9394, 2024 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-39493791

RESUMEN

Key Clinical Message: Vigilant intraoperative inspection is crucial during gallbladder surgery to detect any abnormal tissue including the rare pyloric gland adenomas, which can be easily missed. Thorough examination and removal of unusual lymph nodes or thickened tissues are essential to prevent the risk of malignant transformation and ensure comprehensive patient care. Abstract: Pyloric gland adenomas are uncommon tumors that can be discovered in various organs such as the stomach, gallbladder, and pancreas. Typically lacking noticeable symptoms, these tumors are categorized into subtypes, with the pyloric variant being the most frequent. The term "intracholecystic papillary-tubular neoplasms (ICPN)" is used to emphasize growth patterns and associated risks. In a discussed case, a detached pyloric gland adenoma was identified incidentally during a cholecystectomy procedure. A 58-year-old obese male presented with upper abdominal pain, nausea, and vomiting. He was diagnosed with early cholecystitis caused by gallstones. Subsequently, during a laparoscopic cholecystectomy, a detached adenoma was discovered. Vigilant screening is crucial, as the identification of gallbladder pyloric gland adenomas is a rare occurrence that might be missed during gallbladder surgery. Any unusual lymph nodes or thickened tissues found in association with the gallbladder ought to be carefully removed, as they could potentially indicate detached gallbladder adenomas with a significant risk of becoming malignant. Failing to consider this possibility may subject the patient to prolonged risks if not meticulously examined.

4.
Cureus ; 16(10): e70644, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39483550

RESUMEN

INTRODUCTION: Musculoskeletal pain (MSP) is one of the most prevalent conditions among global medical students, affecting their daily lifestyle. In this study, we seek to determine the prevalence of MSP and its associated risk factors in a sample of medical students at Misr University for Science and Technology, Egypt. METHODS: A cross-sectional study was conducted between December 2023 and February 2024, with a sample size of 1472 students who filled out a modified version of the Standardized Nordic Questionnaire. Demographic variables, study hours, and special habits were collected and analyzed. The prevalence of MSP in the past week and year was documented and analyzed using common risk factors. RESULTS: A total of 971 responses were considered for analysis (66% of the total sample size and 27.7% of the total medical students). The majority were between 18 and 25 years old, with 50.7% males and 49.3% females. The median age was 21 (20-23) years. Most of the students were in their fifth year (23.8%). The prevalence of at least one MSP site was 459 (47.2%) in the past week and 702 (72.2%) in the past year. MSP in the past year was significantly associated with females (OR = 2.45, 95% CI = 1.82-3.3, p = 0.001) and those with a family history of autoimmune disease (OR = 2.19, 95% CI = 1.3-3.5, p = 0.001), while it was significantly associated in the past week with females (OR = 1.72, 95% CI = 1.3-2.2, p = 0.001) and those with a personal history of autoimmune disease (OR = 2.26, 95% CI = 1.09-4.7, p = 0.025). In the past year, neck pain was significantly associated with females (OR = 1.83, 95% CI = 1.42-3.27, p = 0.001) and those with a family history of autoimmune disease (OR = 1.4, 95% CI = 1.01-2.08, p = 0.047). Students living inside October city were less likely to have neck pain in the past year than those who lived outside October city (OR = 0.73, 95% CI = 0.56-0.94, p = 0.017). Shoulder pain in the past year was significantly associated with females (OR = 2.9, 95% CI = 2.1-3.98, p = 0.001) and those with a family history of autoimmune disease (OR = 1.9, 95% CI = 1.28-2.81, p = 0.001) while back pain in the past year was significantly associated with females (OR = 2.1, 95% CI = 1.6-2.7, p = 0.001). Gender was the only factor that was associated with MSP on multivariate regression analysis for the past week (p = 0.001) and past year (p = 0.001). CONCLUSION: MSP is highly prevalent among medical students in Egypt, especially females, those with a personal history of autoimmune disease, and those with a family history of autoimmune disease. Despite the high prevalence and the effect on daily lifestyle, very few medical students sought help. More studies are needed to evaluate other risk factors and effective approaches to alleviate MSP among medical students in Egypt.

5.
Pharmacy (Basel) ; 12(5)2024 Sep 29.
Artículo en Inglés | MEDLINE | ID: mdl-39452807

RESUMEN

BACKGROUND: Diabetes mellitus is a complex condition to manage. Patients with a greater understanding and knowledge of their condition might achieve better glycemic control than others. This study aimed to evaluate the impact of clinical pharmacist-led diabetes education on the knowledge and attitude of individuals with type II diabetes mellitus (T2DM). METHODS: This study was a quasi-experimental study which was conducted at a diabetes clinic in Khartoum, Sudan. The study population was adult individuals with T2DM who attended the diabetes clinic. The estimated sample size was 182 participants. The participants were selected randomly by a simple random sampling method. The knowledge and attitudes of the participants were assessed at baseline and at the end of the study after 12 months. The intervention was carried out through educational materials about diabetes and medications for its treatment. RESULTS: The majority of the participants were females. The mean age was 54.5 (±10) years. Most participants had a family history of diabetes (69.2%). The mean knowledge score after the intervention was increased by 1.4 (±0.1) from baseline, p value (<0.001), while the mean attitude score was increased by 1.7 (±0.2) from baseline, p value (<0.001). At baseline, 14.8% of the participants had a high level of knowledge and 18.7% had a negative attitude, while after intervention for 12 months, 28.5% of them had a high level of knowledge and 16.8% had a negative attitude (p values < 0.001, 0.032, respectively). CONCLUSIONS: The knowledge of and attitudes towards diabetes differed significantly as a result of the educational program provided by the clinical pharmacist.

6.
Food Chem ; 464(Pt 2): 141656, 2024 Oct 18.
Artículo en Inglés | MEDLINE | ID: mdl-39442218

RESUMEN

This study hypothesizes that the solvent-free alcoholysis of oil recovered from salmon heads using vanillyl alcohol (VA) and immobilized lipase B can efficiently produce esters with enhanced stability and antioxidant properties. The objective was to investigate the selectivity and resulting ester profile, which may provide nutritional and functional advantages compared to supplementing oil with vanillyl alcohol. After 24 h, nearly complete conversion of vanillyl alcohol was achieved, leading to the production of various esters reflective of the oil's original fatty acid composition. The synthesis of esters like oleoyl and linolenoyl was favored over docosahexaenoyl and linoleoyl esters, influenced by fatty acid distribution and enzyme specificity, along with potential intra-molecular acyl transfer isomerization. The reaction medium demonstrated significant stability and antioxidant activity, highlighting the potential benefits of vanillyl esters over traditional supplementation methods. These findings suggest that the phenolic alcohol-based alcoholysis of fish oil offers a promising approach to generating stable, nutritionally valuable extracts with potent antioxidant capabilities.

8.
J Am Coll Cardiol ; 84(18): 1733-1744, 2024 Oct 29.
Artículo en Inglés | MEDLINE | ID: mdl-39443017

RESUMEN

BACKGROUND: Built environment affects cardiovascular health, but comprehensive assessment in a scalable fashion, for population health and resource allocation, is constrained by limitations of current microscale measures. OBJECTIVES: The purpose of this study was to investigate the association between satellite image-based environment and risk of major adverse cardiovascular events (MACE). METHODS: Using a pretrained deep neural network, features depicting the built environment from Google Satellite Imagery (GSI) around 64,230 patients in Northern Ohio undergoing coronary artery calcium (CAC) scoring were extracted. Elastic net regularized Cox proportional hazards models identified associations of GSI features with MACE risk (defined as myocardial infarction, stroke, heart failure, or death). A composite GSI risk score was constructed using features that demonstrated nonzero coefficients in the elastic net model. We assessed association of this score with MACE risk, after adjusting for CAC scores and the social vulnerability index (SVI). Its interactions with CAC scores were also examined in subgroups. RESULTS: Adjusting for CAC and traditional risk factors, the GSI risk score was significantly associated with higher MACE risk (HR: 2.67; 95% CI: 1.63-4.38; P < 0.001). However, adding SVI reduced this association to nonsignificance (HR: 1.54; 95% CI: 0.91-2.60; P = 0.11). Patients in the highest quartile (Q4) of GSI risk score had a 56% higher observed risk of MACE (HR: 1.56; 95% CI: 1.32-1.86; P < 0.005) compared with the lowest quartile (Q1). The GSI risk score had the strongest association with MACE risk in patients with CAC = 0. This association was attenuated, but remained significant, with higher CAC. CONCLUSIONS: AI-enhanced satellite images of the built environment were linked to MACE risk, independently of traditional risk factors and CAC, but this was influenced by social determinants of health, represented by SVI. Satellite image-based assessment of the built environment may provide a rapid scalable integrative approach, warranting further exploration for enhanced risk prediction.


Asunto(s)
Entorno Construido , Imágenes Satelitales , Humanos , Masculino , Femenino , Persona de Mediana Edad , Anciano , Medición de Riesgo/métodos , Enfermedades Cardiovasculares/epidemiología , Ohio/epidemiología , Características del Vecindario , Factores de Riesgo de Enfermedad Cardiaca , Enfermedad de la Arteria Coronaria/epidemiología , Factores de Riesgo
9.
Med Educ Online ; 29(1): 2412392, 2024 Dec 31.
Artículo en Inglés | MEDLINE | ID: mdl-39445670

RESUMEN

The Extended matching Questions (EMQs), or R-type questions, are format of selected-response. The validity evidence for this format is crucial, but there have been reports of misunderstandings about validity. It is unclear what kinds of evidence should be presented and how to present them to support their educational impact. This review explores the pattern and quality of reporting the sources of validity evidence of EMQs in health professions education, encompassing content, response process, internal structure, relationship to other variables, and consequences. A systematic search in the electronic databases including MEDLINE via PubMed, Scopus, Web of Science, CINAHL, and ERIC was conducted to extract studies that utilize EMQs. The framework for a unitary concept of validity was applied to extract data. A total of 218 titles were initially selected, the final number of titles was 19. The most reported pieces of evidence were the reliability coefficient, followed by the relationship to another variable. Additionally, the adopted definition of validity is mostly the old tripartite concept. This study found that reporting and presenting validity evidence appeared to be deficient. The available evidence can hardly provide a strong validity argument that supports the educational impact of EMQs. This review calls for more work on developing a tool to measure the reporting and presenting validity evidence.


Asunto(s)
Empleos en Salud , Humanos , Empleos en Salud/educación , Reproducibilidad de los Resultados , Evaluación Educacional/métodos , Evaluación Educacional/normas
10.
BMC Pediatr ; 24(1): 670, 2024 Oct 18.
Artículo en Inglés | MEDLINE | ID: mdl-39425099

RESUMEN

PURPOSE: This is a retrospective study of one-stage anterior sagittal sphincter saving anorectoplasty (ASSSARP) for repairing rectovestibular fistula (RVF) including operative details and postoperative complications, functional and cosmetic outcome. PATIENTS AND METHODS: Records of 41 cases of RVF, managed between April 2010 and September 2019 by one-stage ASSSARP, were reviewed. Preoperative preparation, both early and late postoperative care & complications, hospital stay, and functional & cosmetic outcomes were reported. RESULTS: The mean age was 6.6 months. Vaginal tear occurred in 5/41 cases, and distal rectal tears in 4/41 cases. Thirteen patients suffered mild superficial wound inflammation; while Skin dehiscence; occurred in five patients. No colostomy or redo was needed. The mean hospital stay was 6.1 days. Mean follow-up was 43.13 months; (Range; 24-100 months). Subclinical anal stricture was detected in six patients. Constipation occurred in 14 cases. Soiling grade I occurred in five patients. Thirty-two patients reached past the age of three years; two of whom showed cough/diarrhea incontinence. CONCLUSION: One-stage ASSSARP is safe and gives functional and cosmetic results comparable to other techniques. It provides better access during RVF repair. The avoidance of muscle incision protects against muscle breakdown, if infection sets in, and thus against incontinence. It avoids the morbidity, cost and psychological burden of performing a three-stage repair.


Asunto(s)
Canal Anal , Complicaciones Posoperatorias , Fístula Rectovaginal , Humanos , Femenino , Estudios Retrospectivos , Canal Anal/cirugía , Lactante , Masculino , Fístula Rectovaginal/cirugía , Complicaciones Posoperatorias/epidemiología , Centros de Atención Terciaria , Resultado del Tratamiento , Preescolar , Procedimientos de Cirugía Plástica/métodos , Recto/cirugía , Estudios de Seguimiento , Tiempo de Internación , Tratamientos Conservadores del Órgano/métodos
11.
Clin Exp Allergy ; 2024 Oct 04.
Artículo en Inglés | MEDLINE | ID: mdl-39363801

RESUMEN

Allergic asthma is the predominant phenotype among asthmatics. Although conventional pharmacotherapy is a central component in the management of asthma, it does not enable control of asthma symptoms in all patients. In recent decades, some uncontrolled asthmatic patients, especially those with allergic asthma, have benefited from biological therapies. However, biologics do not address all the unmet needs left by conventional pharmacotherapy. Furthermore, it is noteworthy that neither conventional pharmacotherapy nor biological therapies have disease-modifying properties. In this context, allergen immunotherapy (AIT) represents an indispensable component of the therapeutic arsenal against allergic asthma, due to its disease-modifying immunological effects. In this review article, funded by an AIT manufacturer, we find clinical trials support AIT as the only treatment option able both to improve allergic asthma symptoms and to prevent the onset and worsening of the condition. For patients with severe asthma or other safety concerns, the combination of AIT and biologics offers very promising new treatment modalities for the management of allergic asthma. Trial Registration: clinicaltrials.gov identifier: NCT06027073.

12.
J Contemp Dent Pract ; 25(6): 518-526, 2024 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-39364817

RESUMEN

AIM: This study was designed to compare between the use of Khoury's bone shell technique vs titanium-reinforced PTFE membrane for 3D-ridge augmentation of atrophic posterior mandible. MATERIALS AND METHODS: Sixteen patients were equally and randomly assigned to either the Khoury or PTFE group. In Khoury group, a mandibular bone block was harvested, split and then fixed to augment the mandibular defect using osteosynthesis screws. In PTFE group, augmentation was achieved using Titanium-reinforced PTFE membranes fixed with bone tacks/screws. A mixture of autogenous and xenogenic graft material at a 1:1 ratio was used in both groups. Vertical and horizontal bone gain were obtained using cone-beam computed tomography (CBCT). Preoperative dimensions were compared with the final dimensions obtained 6 months postoperatively. RESULTS: No significant complications or neurosensory dysfunction were encountered. A solitary patient in the Khoury group experienced limited wound dehiscence, which was treated conservatively. For both groups, there were no significant differences between preoperative and postoperative vertical (p = 0.849 and 0.569) and horizontal (p = 0.778 and 0.367) dimensions. CONCLUSION: No significant differences exist between the augmentation dimension which can be obtained using either Khoury of Ti-PTFE membranes. CLINICAL SIGNIFICANCE: Both approaches are delicate and necessitate surgical expertise and experience. Both techniques can be used to achieve predictable augmentation results with a low rate of complications. How to cite this article: Shaker AES, Salem AS, El-Farag SAA, et al. Comparison of Khoury's Bone Shell Technique vs Titanium-reinforced Polytetrafluoroethylene Membrane for 3D-bone Augmentation in Atrophic Posterior Mandible: A Randomized Clinical Trial. J Contemp Dent Pract 2024;25(6):518-526.


Asunto(s)
Aumento de la Cresta Alveolar , Tomografía Computarizada de Haz Cónico , Mandíbula , Membranas Artificiales , Politetrafluoroetileno , Titanio , Humanos , Masculino , Mandíbula/cirugía , Femenino , Aumento de la Cresta Alveolar/métodos , Persona de Mediana Edad , Adulto , Trasplante Óseo/métodos , Atrofia
13.
Intensive Crit Care Nurs ; : 103848, 2024 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-39358052

RESUMEN

INTRODUCTION: Currently there is limited evidence of the frequency of using endotracheal suctioning catheters. Due to limited resources, many low- and middle-income countries still reuse single-use suction catheters multiple times during the length of a nursing shift. This scoping review was conducted to map the impact of reusing single-use endotracheal suctioning catheters practices on mechanically ventilated patients' outcomes. METHODS: The scoping review was conducted in accordance with the JBI methodology for scoping reviews. Four databases systematically searched using predefined keywords (CINAHL, EMBASE, MEDLINE, GLOBAL HEALTH). Key electronic journals were hand searched, while reference lists of included documents and grey literature sources were screened thoroughly. Two independent reviewers completed the study selection and data extraction. A third reviewer made the final decision on any disagreements disputed records. RESULTS: In total 22 articles were identified, and 14 non-duplicate records were screened, and 8 articles were screened for full text. Six articles met the inclusion criteria and were included in this review. Differences were observed on the findings of included studies, two studies identified that reusing single-use suction catheter might increases the risk of respiratory infection, while two other studies identified no difference in contamination rate between single used or multiple-used catheters. One study indicated that reusing single-use catheters are a safe and cost-effective intervention and finally one study reported that reusing single-use catheters might reduce incidence of ventilator associated pneumonia if flushed with chlorhexidine after suctioning. CONCLUSIONS: There is no strong evidence of the frequency of using endotracheal suction catheters. Further research is needed comparing single-used versus multiple-used endotracheal suction catheters in mechanically ventilated patients. IMPLICATION FOR CLINICAL PRACTICE: Nurses in resource-limited countries can follow their hospital policy regarding the changing frequency of endotracheal suction catheters due to lack of a robust evidence. Flushing suction circuits with chlorhexidine while reusing single-use catheters might reduce the risk of respiratory infections in these hospitals.

14.
Artículo en Inglés | MEDLINE | ID: mdl-39369274

RESUMEN

Royal jelly renowned for its robust nutritional, functional, and biological properties, is a pivotal product derived from honeybees. The purpose of this investigation was to assess the theory that in ovo injection of freeze-dried royal jelly (FDRJ) solutions at varying concentrations can influence the hatchability, blood properties and hatching characteristics of day-old chicks. A total of 480 eggs (54.81 ± 0.187 g) were allocated into four experimental groups: negative control (NC), without injection, positive control (PC), administered with regular saline, a low FDRJ dose group (9 mg/egg), and a high FDRJ dose group (18 mg/egg). The in ovo injections were administered on Day 18 of incubation, and the experiment was subsequently continued until the incubation period concluded at 21 days. Results revealed that the lower FDRJ dose (9 mg/egg) significantly improved hatchability percentages compared to other treatments. Conversely, the higher FDRJ dose (18 mg/egg) and control groups (NC and PC) resulted in significantly higher chick yield percentages than the lower FDRJ and PC groups. The NC group showed the supreme yolk sac (YS) percentage, whereas the yolk-free body mass (YFBM) percentages displayed an inverse trend. Furthermore, the in ovo FDRJ injection did not affect haematological values or the relative organ weight of day-old chicks. In conclusion, in ovo FDRJ injection demonstrated beneficial effects on hatchability and chick weight, as evidenced by the studied parameters.

15.
Animals (Basel) ; 14(20)2024 Oct 17.
Artículo en Inglés | MEDLINE | ID: mdl-39457940

RESUMEN

This study sought to evaluate the genetic variations of the ovocalyxin-32 gene and its association with egg quality traits in indigenous chicken populations, focusing on exons 1 and 6. Genotype frequencies of SNPs (G/T and A/G) within these exons were assessed for their conformity to the Hardy-Weinberg equilibrium (HWE) across several strains. While most strains exhibited close adherence to HWE expectations, some like light-brown and gray strains indicated substantial discrepancies, particularly for the TT genotype, which points towards the possible effects of genetic drift as well as selection pressures. This study also analyzed the influence of such SNPs on egg quality parameters. A thinner eggshell, reduced shell weight, and decreased breaking strength were associated with the G/T SNP in exon 1, suggesting a likely negative effect on egg quality in T allele carriers. Conversely, the AG genotype displayed better performance in shell thickness, weight and egg weight in the A/G SNP in exon 1, whilst yolk height was best improved by the AA genotype compared to breaking strength. For instance, in exon 6, the A/G SNP enhanced the shell and yolk quality among AG genotypes, while the CC genotype resulted in better eggshell characteristics with enlarged yolks because the C/T SNP was linked. Nonetheless, there were no significant deviations from the HWE despite these associations, which suggested that most breeds had a stable genetic background. Further, considering SNPs' additive and dominant effects in this research, it was indicated that additive effects account for phenotypic expressions given by the G/T SNP located at exon 1. In contrast, significant additive and dominant effects were observed under the A/G SNP situated at the exon. Generally, it therefore could be concluded from this study that specific SNPs within the ovocalyxin-32 gene may act as good markers for marker-assisted selection (MAS) that can improve desired characteristics-such as those of egg quality-in indigenous chicken breeds. This study demonstrated that both additive and dominance effects must be taken into account when performing genetic analyses, thereby emphasizing the complexity of phenotypic variation caused by genetic mechanisms in native chicken races.

16.
Cureus ; 16(9): e70251, 2024 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-39463537

RESUMEN

BACKGROUND: The most common inherited illness, thalassemia, is thought to have a detrimental effect on public health, particularly in endemic areas. Children with beta thalassemia disease have several mutations. Prevention and premarital examination are still the most effective measures to lessen the burden of beta thalassemia. OBJECTIVES: This study primarily aimed to determine the beta thalassemia carriers in relatives of beta thalassemia major children, the role of gene study in the confirmation of beta thalassemia trait diagnosis, and to detect the genetic defect in the relatives of beta thalassemia major children. MATERIALS AND METHODS: The cross-sectional study was conducted on 109 healthy children, aged between six months and 18 years, who were the relatives (second and fourth degree) of beta thalassemia major cases. RESULTS: Gene screening, using the amplification refractory mutation system (ARMS) polymerase chain reaction (PCR), covered the most common 22 alleles in the Mediterranean region, and was successful in detecting 61.5% of beta-globin chain mutations of studied participants, in addition to high prevalence (34.8%) of beta thalassemia carriers among the relatives of beta thalassemia children. CONCLUSION: The beta thalassemia carrier rate was found to be highly prevalent among relatives of beta thalassemia major children. Despite the accuracy of gene screening in the detection of beta thalassemia carriers, the use of the most common 22 alleles can only detect 61.5% of carriers; hence, the value of tested gene study is still limited in the detection of carrier rates.

19.
ChemSusChem ; : e202401762, 2024 Oct 27.
Artículo en Inglés | MEDLINE | ID: mdl-39462209

RESUMEN

The growing demand for electronic devices has led to excessive stress on Earth's resources, necessitating effective waste management and the search for renewable materials with minimal environmental impact. Bioelectronics, designed to interface with the human body, have traditionally been made from inorganic materials, such as metals, which, while having suitable electrical conductivity, differ significantly in chemical and mechanical properties from biological tissues. This can cause issues such as unreliable signal collection and inflammatory responses. Recently, natural biopolymers such as cellulose, chitosan, and silk have been explored for flexible devices, given their chemical uniqueness, shape flexibility, ease of processing, mechanical strength, and biodegradability. Cellulose is the most abundant natural biopolymer, has been widely used across industries, and can be transformed into electronically conductive carbon materials. This review focuses on the advancements in cellulose-based conductive materials for bioelectronics, detailing their chemical properties, methods to enhance conductivity, and forms used in bioelectronic applications. It highlights the compatibility of cellulose with biological tissues, emphasizing its potential in developing wearable sensors, supercapacitors, and other healthcare-related devices. The review also addresses current challenges in this field and suggests future research directions to overcome these obstacles and fully realize the potential of cellulose-based bioelectronics.

20.
Pharmaceuticals (Basel) ; 17(10)2024 Oct 18.
Artículo en Inglés | MEDLINE | ID: mdl-39459031

RESUMEN

BACKGROUND/OBJECTIVES: Many pregnant women globally suffer from depression and are routinely prescribed selective serotonin reuptake inhibitors (SSRIs). These drugs function by blocking the re-uptake of serotonin by the serotonin transporter (SERT) into neurons, resulting in its accumulation in the presynaptic cleft. Despite a large amount of research suggesting a potential link to neurodevelopmental disorders in children whose mothers took these drugs during pregnancy, their possible adverse effects are still debated, and results are contradictory. On the other hand, there is an immediate need for improved cell-based models for developmental neurotoxicity studies (DNT) to minimize the use of animals in research. METHODS: In this study, we aimed to assess the effects of clinically relevant concentrations of paroxetine (PAR), fluoxetine (FLX), and citalopram (CIT)-on maturing neurons derived from human neural stem cells using multiple endpoints. RESULTS: Although none of the tested concentrations of FLX, CIT, or PAR significantly affected cell viability, FLX (10 µM) exhibited the highest reduction in viability compared to the other drugs. Regarding neurite outgrowth, CIT did not have a significant effect. However, FLX (10 µM) significantly reduced both mean neurite outgrowth and mean processes, PAR significantly reduced mean processes, and showed a trend of dysregulation of multiple genes associated with neuronal development at therapeutic-relevant serum concentrations. CONCLUSIONS: Transcriptomic data and uptake experiments found no SERT activity in the system, suggesting that the adverse effects of FLX and PAR are independent of SERT.

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