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1.
Surg Radiol Anat ; 2024 Aug 02.
Artículo en Inglés | MEDLINE | ID: mdl-39093462

RESUMEN

PURPOSE: The saphenous nerve is a predominantly sensory nerve. It is the longest nerve of the body which supplies the skin of the medial side of the leg and foot as far as the ball of the great toe. We present here an unusual motor branch of the saphenous nerve to the sartorius muscle. METHOD: Institutional guidelines for use of human cadaver were followed. Routine dissection of the lower limbs for undergraduate medical teaching was performed in a 67 years old female cadaver employing standard methods. Relevant gross features of the variations were photographed. H&E staining of relevant structure was done and photomicrographed. RESULTS: The unusual motor branch to Sartorius was observed in the right thigh. The branch was given off in the lower third of the thigh after the saphenous nerve exited the adductor canal. The branch was distinctly seen entering the substance of the sartorius. The structure was confirmed to be a peripheral nerve by histological examination. The saphenous nerve then descended between the sartorius and gracilis tendons, pierced the fascia lata and became cutaneous. CONCLUSION: The motor branch to the sartorius muscle is a very rare branch whose knowledge is important for clinicians as it can get damaged during arthroscopy and other knee surgery or during adductor canal block.

2.
Front Glob Womens Health ; 5: 1243280, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39049935

RESUMEN

Background: The cells of the cervical epithelial wall are the source of the malignant tumor caused by the human papilloma virus (HPV) known as cervical cancer. In 2018, Ethiopia implemented the HPV vaccine specifically targeting girls aged 9-14 years. This vaccination initiative serves as an effective preventive measure against cervical cancer, provided that parents express a positive inclination to have their daughters vaccinated as part of the program. Objective: The aim of the study was to assess parental willingness to vaccinate their daughters against human papillomavirus and its associated factors in Woldia town, Northeast Ethiopia. Methods: A community-based cross-sectional study was conducted among 414 parents of daughters aged 9-14 years between 10 and 25 January 2023. Respondents were selected by a systematic sampling method and a face-to-face interview was conducted to collect data. Data were entered into Epi Data version 4.6 and exported to SPSS version 25 for analysis. Multivariable analyses were used to examine the association between dependent and independent variables. The adjusted odds ratio (AOR), 95% confidence interval (CI), and p-value <0.05 were used to determine statistical significance. Results: A total of 410 study participants with a response rate of 99% were included in the study, and approximately 72.9% (95% CI: 68.3-77.2) of them were willing to vaccinate their daughters. This study found that parents with a family history of cervical cancer screening (AOR = 3.27, 95%; CI = 1.38-7.74), secondary and above educational status (AOR = 2.72, 95% CI = 1.29-5.73), good knowledge of the human papilloma virus vaccination (AOR = 3.00, 95% CI = 1.70-5.28), and favorable attitude toward the human papilloma virus vaccine (AOR = 4.40, 95% CI = 2.45-7.88) were significantly associated with parental willingness to vaccinate their daughters against human papilloma virus. Recommendation: In this study, most parents were willing to vaccinate their daughters against human papilloma virus. The significant determinants of parental willingness to their daughter's human papilloma virus vaccination were family history of cervical cancer screening, level of education, and knowledge and attitude toward the human papilloma virus vaccine. Therefore, health information regarding the human papillomavirus vaccination with an emphasis on raising community awareness should be designed.

3.
Heliyon ; 10(13): e33402, 2024 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-39050449

RESUMEN

The problem of estimating the variance of a finite population is an important issue in practical situations where controlling variability is difficult. During experiments conducted in the fields of agriculture and biology, researchers often face this issue, resulting in outcomes that appear uncontrollable for the desired results. Using auxiliary information effectively has the potential to enhance the precision of estimators. This article aims to introduce improved classes of efficient estimators that are specifically designed to estimate the study variable's finite population variance. When stratified random sampling is used, these estimators are particularly efficient when the minimum and maximum values of the auxiliary variable are known. The bias and mean squared error (MSE) of the proposed classes of estimators are determined by a first-order approximation. In order to evaluate their performance and verify the theoretical results, we performed simulation research. The proposed estimators show higher percent relative efficiencies ( P R E s ) in all simulation scenarios compared to other existing estimators, according to the results. Three datasets are utilized in the application section, which are used to further validate the effectiveness of the proposed estimators.

4.
J Multidiscip Healthc ; 17: 3459-3473, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39050695

RESUMEN

Cardiovascular diseases (CVDs) are increasingly prevalent in clinical settings. With the continuous improvement of people's living standards, the gradual acceleration of the pace of life, and the deterioration of the living environment in recent years, the incidence of CVDs is increasing annually. The prevalence of CVDs among individuals aged 50 and above is notably elevated, posing a significant risk to patients' well-being and lives. At this juncture, numerous clinical treatment choices are available for managing CVDs, with traditional Chinese medicine (TCM) therapy standing out as a practical, safe, and reliable option. Over the recent years, there has been growing acknowledgement among both medical professionals and patients. With the expanding integration of TCM in the treatment of various clinical conditions, the use of TCM in managing CVDs has gained significant attention within the medical community, potentially emerging as an efficacious approach for addressing cardiovascular diseases. This article conducts a comprehensive review of the TCM approach, particularly acupuncture, as a supplementary treatment for CVDs, highlighting its ability to effectively lower blood pressure, decrease coronary artery events, mitigate arrhythmias, and enhance cardiac function when used alongside conventional medication. The review underscores the promise of acupuncture in enhancing cardiovascular health, although variations in research methodologies necessitate standardized applications.

5.
PLOS Glob Public Health ; 4(7): e0003481, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39012875

RESUMEN

Rising global migration levels have led to growing diaspora populations. There has been interest in the role of diaspora healthcare professionals (HCPs) from low- and middle-income countries (LMICs) in development aid to their origin countries, although there has been comparatively less focus on their educational activities. This study examined the stated educational priorities of LMIC medical diaspora organisations, with a particular focus on the tension between promoting professional opportunities afforded by medical migration and contributing to healthcare workforce shortages due to migration away from LMICs.We gathered a textual archive from webpages and public documents of 89 LMIC medical diaspora organisations in high income countries, predominantly the US and UK. We employed Foucauldian critical discourse analysis to examine presented rationales around educational policies and practices, with a focus on encouragement towards, and discouragement from, medical migration. Two discourses dominated this archive. The first was of preservation and framed the educational work of these organisations as a means of providing unity and social networks to diaspora HCPs, with a focus on maintaining their cultural identity and heritage, and medical connections with their origin countries. The second was of aspiration and framed their educational work as providing support to diaspora HCPs to advance their careers and maximise training opportunities, often through directly enabling and supporting migration to high income countries. There was a discursive absence around brain drain with no policies or practices that overtly sought to deter against, or offset the negative effects of, medical migration. Notwithstanding the valuable contributions that LMIC medical diaspora organisations make in global health, the discursive framings that shape their educational work are linked primarily to protecting and progressing diaspora HCPs rather than on LMIC workforce challenges. Further research is needed to examine potential impacts of these positions on HCP migratory behaviours.

6.
Ann Afr Med ; 23(3): 267-270, 2024 Jul 01.
Artículo en Francés, Inglés | MEDLINE | ID: mdl-39034546

RESUMEN

INTRODUCTION: Our purpose was to study the body composition in a healthy female Moroccan adult group, and to help physicians to evaluate nutritional status. MATERIALS AND METHODS: Five hundred and nineteen healthy women aged from 20 to 80 years were included in the study. Bone mineral density at the hip and lumbar spine and the body composition parameters were measured by dual-energy X-ray absorptiometry: fat mass (FM), fat-free mass (FFM), and percentage (%) of body fat. The FFM index (FFMI) and the FM index (FMI) were calculated. We analyzed the population by age and body mass index (BMI) defined groups. RESULTS: The mean age of the population was 53.14 ± 13.69 years with an average BMI of 29.30 ± 5.04 kg/m2. Means of FM and FFM were 33.93 ± 9.18 kg and 36.91 ± 5 kg, respectively, with FM and FFMI of 13.65 ± 3.66 kg/m2 and 14.85 ± 1.91 kg/m2, respectively. The % FM, FFM, and their corresponding indices increased with age; a statistically significant difference was observed between the 20 and 39 age categories and the two other categories. The BMI category analysis showed that FFMI and FMI increased in obese women with a statistically significant difference between the four groups. Age and BMI were correlated significantly with the different parameters. CONCLUSION: This is the first Moroccan study to present body composition indexes in healthy Moroccan female adults. These reference values may be useful for the clinical evaluation of body composition and nutritional status.


Résumé Introduction:Notre objectif était d'étudier la composition corporelle dans un groupe adulte marocain féminin en bonne santé et d'aider les médecins à évaluer l'état nutritionnel.Matériaux et méthodes:Cinq cent dix-neuf femmes en bonne santé âgées de 20 à 80 ans ont été incluses dans l'étude. La densité minérale osseuse à la hanche et la colonne vertébrale lombaire et les paramètres de composition corporelle ont été mesurées par absorptiométrie à double énergie X: masse grasse (FM), masse sans graisse (FFM) et pourcentage (%) de graisse corporelle. L'indice FFM (FFMI) et l'indice FM (FMI) ont été calculés. Nous avons analysé la population par des groupes définis par l'âge et l'indice de masse corporelle (IMC).Résultats:L'âge moyen de la population était de 53,14 ± 13,69 ans avec un IMC moyen de 29,30 ± 5,04 kg / m2. Les moyennes de FM et de FFM étaient de 33,93 ± 9,18 kg et 36,91 ± 5 kg, respectivement, avec FM et FFMI de 13,65 ± 3,66 kg / m2 et 14,85 ± 1,91 kg / m2, respectivement. Le% FM, FFM et leurs indices correspondants ont augmenté avec l'âge; Une différence statistiquement significative a été observée entre les 20 et 39 catégories d'âge et les deux autres catégories. L'analyse de la catégorie IMC a montré que l'IFMI et l'IFM ont augmenté chez les femmes obèses avec une différence statistiquement significative entre les quatre groupes. L'âge et l'IMC étaient corrélés de manière significative avec les différents paramètresConclusion:il s'agit de la première étude marocaine à présenter des indices de composition corporelle chez des adultes marocains sains. Ces valeurs de référence peuvent être utiles pour l'évaluation clinique de la composition corporelle et de l'état nutritionnel.


Asunto(s)
Absorciometría de Fotón , Composición Corporal , Índice de Masa Corporal , Densidad Ósea , Estado Nutricional , Obesidad , Humanos , Femenino , Adulto , Persona de Mediana Edad , Composición Corporal/fisiología , Marruecos/epidemiología , Obesidad/epidemiología , Anciano , Densidad Ósea/fisiología , Adulto Joven , Anciano de 80 o más Años , Tejido Adiposo/diagnóstico por imagen
7.
Int J Cardiol ; 412: 132339, 2024 Oct 01.
Artículo en Inglés | MEDLINE | ID: mdl-38968972

RESUMEN

BACKGROUND: The study aimed to determine the most crucial parameters associated with CVD and employ a novel data ensemble refinement procedure to uncover the optimal pattern of these parameters that can result in a high prediction accuracy. METHODS AND RESULTS: Data were collected from 369 patients in total, 281 patients with CVD or at risk of developing it, compared to 88 otherwise healthy individuals. Within the group of 281 CVD or at-risk patients, 53 were diagnosed with coronary artery disease (CAD), 16 with end-stage renal disease, 47 newly diagnosed with diabetes mellitus 2 and 92 with chronic inflammatory disorders (21 rheumatoid arthritis, 41 psoriasis, 30 angiitis). The data were analyzed using an artificial intelligence-based algorithm with the primary objective of identifying the optimal pattern of parameters that define CVD. The study highlights the effectiveness of a six-parameter combination in discerning the likelihood of cardiovascular disease using DERGA and Extra Trees algorithms. These parameters, ranked in order of importance, include Platelet-derived Microvesicles (PMV), hypertension, age, smoking, dyslipidemia, and Body Mass Index (BMI). Endothelial and erythrocyte MVs, along with diabetes were the least important predictors. In addition, the highest prediction accuracy achieved is 98.64%. Notably, using PMVs alone yields a 91.32% accuracy, while the optimal model employing all ten parameters, yields a prediction accuracy of 0.9783 (97.83%). CONCLUSIONS: Our research showcases the efficacy of DERGA, an innovative data ensemble refinement greedy algorithm. DERGA accelerates the assessment of an individual's risk of developing CVD, allowing for early diagnosis, significantly reduces the number of required lab tests and optimizes resource utilization. Additionally, it assists in identifying the optimal parameters critical for assessing CVD susceptibility, thereby enhancing our understanding of the underlying mechanisms.


Asunto(s)
Algoritmos , Enfermedades Cardiovasculares , Humanos , Enfermedades Cardiovasculares/epidemiología , Enfermedades Cardiovasculares/diagnóstico , Masculino , Femenino , Persona de Mediana Edad , Anciano , Adulto
8.
PLoS One ; 19(7): e0307283, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39028722

RESUMEN

INTRODUCTION: Breast cancer continues to be the most common malignancy and the leading cause of cancer-related deaths in Ethiopia. The poor prognosis and high mortality rate of breast cancer patients in the country are largely caused by late-stage diagnosis. Hence, understanding the epidemiology of late-stage diagnosis is essential to address this important problem. However, previous reports in Ethiopia indicated inconsistent findings. Therefore, this literature review was conducted to generate dependable evidence by summarizing the prevalence and determinants of late-stage diagnosis among breast cancer patients in Ethiopia. METHODS: Pertinent articles were retrieved by systematically searching on major electronic databases and gray literature. Data were extracted into an Excel spreadsheet and analyzed using the STATA 17 statistical software. The pooled estimates were summarized using the random effect meta-analysis model. Heterogeneity and small study effect were evaluated using the I2 statistics and Egger's regression test in conjunction with the funnel plot, respectively. Meta-regression, sub-group analysis, and sensitivity analysis were also employed. Protocol registration number: CRD42024496237. RESULTS: The pooled prevalence of late-stage diagnosis after combining reports of 24 studies with 8,677 participants was 65.85 (95% CI: 58.38, 73.32). Residence (adjusted OR: 1.92; 95% CI: 1.45, 2.53), patient delay at their first presentation (adjusted OR: 2.65; 95% CI: 1.56, 4.49), traditional medicine use (adjusted OR: 2.54; 95% CI: 1.89, 3.41), and breast self-examination practice (adjusted OR: 0.28; 95% CI: 0.09, 0.88) were significant determinants of late-stage diagnosis. CONCLUSION: Two-thirds of breast cancer patients in Ethiopia were diagnosed at an advanced stage. Residence, delay in the first presentation, traditional medicine use, and breast self-examination practice were significantly associated with late-stage diagnosis. Public education about breast cancer and its early detection techniques is crucial to reduce mortality and improve the survival of patients. Besides, improving access to cancer screening services is useful to tackle the disease at its curable stages.


Asunto(s)
Neoplasias de la Mama , Diagnóstico Tardío , Humanos , Etiopía/epidemiología , Neoplasias de la Mama/mortalidad , Neoplasias de la Mama/diagnóstico , Neoplasias de la Mama/epidemiología , Femenino , Prevalencia , Estadificación de Neoplasias
9.
Med Teach ; : 1-3, 2024 Jul 12.
Artículo en Inglés | MEDLINE | ID: mdl-38994843
10.
Ann Hematol ; 2024 Jul 19.
Artículo en Inglés | MEDLINE | ID: mdl-39028356

RESUMEN

To evaluate the safety and efficacy of L-glutamine in reducing vaso-occlusive crisis (VOC) and improving cerebral arterial blood flow in children with sickle cell disease (SCD). This is an interventional randomized controlled trial that recruited sixty SCD patients, aged 9.2 ± 3.7 years, who had at least two VOCs during the last 12 months and on a stable dose of hydroxyurea. They were randomly assigned in a 1:1 ratio to receive glutamine (0.3 gm/kg/dose/12h) orally for 24 weeks or the standard of care (SOC). All patients had VOCs in the last year > 3, those on glutamine had a higher number of VOCs and hospitalization for VOC in the last year. There was a decreasing trend in the number, severity, and hospitalization of VOC and a significantly lower cumulative number of VOCs and hospitalizations in the glutamine group than in SOC (p = 0.008, p < 0.001 respectively). Time-averaged mean maximum velocity for the glutamine group had a marginal increase in both middle cerebral arteries, all values remained normal within a normal range, and in both internal carotid arteries, values increased from abnormally low to normal ranges at week 24. Glutamine reduced the number of VOCs and severity and may have a potentially favorable impact on the cerebral arterial flow velocities.

11.
Sci Rep ; 14(1): 16504, 2024 Jul 17.
Artículo en Inglés | MEDLINE | ID: mdl-39019932

RESUMEN

This article aims to suggest an improved estimator for estimation of population median using auxiliary information under simple random sampling. The expression for the bias and mean square error are obtained up to first order approximation. We determine the MLE of the optimal values of the describing scalars. The proficiency of the suggested estimator is evaluated in comparison to the preliminary estimators using the MSE threshold. The suggested estimators are compared numerically to the ones that are currently studied in this study. The performance and novelty of the estimators was evaluated using real data sets and a simulation study. To check the efficiency of estimators empirical and theoretical study has been studied. Based on numerical result it is to be noted that our suggested estimator is more efficient as compared to existing estimators which is considered in this article in terms of least MSE and greater PRE.

12.
BMC Vet Res ; 20(1): 329, 2024 Jul 20.
Artículo en Inglés | MEDLINE | ID: mdl-39033105

RESUMEN

BACKGROUND: In the livestock industry, Foreign Body Syndrome is a devastating disease condition. Feeding management, lacking of food discrimination, and eating chopped food increase the risk of swallowing sharp foreign bodies in bovine species. In addition to the honeycomb cells shape of the reticulum, the contractions of the reticular wall, gravid uterine pressure, and parturition efforts, foreign bodies can penetrate the reticular wall, causing cascade of problems including traumatic reticulitis, traumatic reticuloperitonitis, and traumatic pericarditis. The present study was carried out to evaluate the diagnostic significance of cardiac troponin I rapid test cassette and other cardiac biomarkers including serum cardiac troponin I (cTn I), creatine kinase-myocardial band (CK-MB), lactate dehydrogenase (LDH), and aspartate aminotransferase enzyme (AST), in confirmed cases of traumatic pericarditis (TP) and/or traumatic reticuleoperitonitis (TRP) in cattle and buffaloes. METHODS: A total number of 30 animals (22 cattle and 8 buffaloes) with different signs such as anorexia, jugular distension, brisket edema, and signs of pain (reluctance to move, arching back, and abduction of the forelimbs) were included in the present study. Based on case history, clinical signs, ferroscopic, pericardiocentesis, radiographic and ultrasonographic examinations, TP were confirmed in cattle (n = 10) and buffaloes (n = 8) while TRP were confirmed only in cattle (n = 12). Additionally, 20 clinically healthy animals (n = 10 cattle and 10 buffaloes) were used as a control group. Blood samples were collected for determination of blood level of Tn-I, and activity of CK-MB, LDH, and AST. RESULTS: The obtained results revealed a highly significant increase in serum cTn I in diseased cattle with TP and TRP (P = 0.00), while buffaloes with TP showed no significant changes in serum cTn I (P = 0.111). Both diseased cattle and buffaloes showed increased serum activities of CK-MB, AST, and LDH enzyme. On the other hand, cardiac troponin I rapid test cassette failed to detect cTn I in diseased animals. CONCLUSION: The study concluded that the cardiac troponin I rapid test cassette did not have a diagnostic significance and could not be used as a point-of-care under field condition for diagnosis of TP and TRP in large ruminants. However, the serum troponin I level is helpful in diagnosis of TP and TRP in cattle. Although cardiac biomarkers have some diagnostic values in TP and TRP, the traditional diagnostic methods (clinical, radiography and ultrasonography examinations) are crucial for thorough evaluation of TP/TRP cases in bovine.


Asunto(s)
Biomarcadores , Búfalos , Enfermedades de los Bovinos , Forma MB de la Creatina-Quinasa , Pericarditis , Reticulum , Troponina I , Animales , Pericarditis/veterinaria , Pericarditis/diagnóstico , Pericarditis/sangre , Bovinos , Biomarcadores/sangre , Troponina I/sangre , Enfermedades de los Bovinos/diagnóstico , Enfermedades de los Bovinos/sangre , Forma MB de la Creatina-Quinasa/sangre , Femenino , Peritonitis/veterinaria , Peritonitis/diagnóstico , Peritonitis/sangre , L-Lactato Deshidrogenasa/sangre , Aspartato Aminotransferasas/sangre , Masculino , Cuerpos Extraños/veterinaria , Cuerpos Extraños/complicaciones , Cuerpos Extraños/diagnóstico
13.
Sudan J Paediatr ; 24(1): 41-48, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38952622

RESUMEN

Twenty million children under 5 years old are estimated to suffer from malnutrition worldwide. The objective of this study is to determine factors associated with Riyadh children's nutritional status. An institutional-based cross-sectional study was conducted among children aged 6-12, excluding mentally ill children. The sample size was 200. Data were collected through interview-administered questionnaires developed for this study's purpose after consulting relevant literature and epidemiologists. Data analysis was via SPSS version-23; a p-value of 0.05 or less is considered significant. Consent was obtained before data collection, emphasizing confidentiality and the participant's rights to withdraw from the study at any time. Most of the study respondents in the age group (6-12 years) were 12 years (22%), and the predominant gender were girls (55.5%). No significant statistical relationship existed between the mother's education and the children's body mass index (BMI, p = 0.168). Many respondents had a normal BMI (40.5%), while a minority were underweight (28.5%) among all groups. There was a significant statistical relationship between the BMI of the children and with mother's BMI (p = 0.016). There was no significant statistical relationship between the food source and children's BMI (p = 0.710). There was no significant statistical relationship between the average meal and the children's BMI (p = 0.098). There is a significant relationship between the BMI of the respondents and the mother's BMI under the underweight group.

14.
Acta Biomater ; 184: 210-225, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38969078

RESUMEN

Osteocytes perceive and process mechanical stimuli in the lacuno-canalicular network in bone. As a result, they secrete signaling molecules that mediate bone formation and resorption. To date, few three-dimensional (3D) models exist to study the response of mature osteocytes to biophysical stimuli that mimic fluid shear stress and substrate strain in a mineralized, biomimetic bone-like environment. Here we established a biomimetic 3D bone model by utilizing a state-of-art perfusion bioreactor platform where immortomouse/Dmp1-GFP-derived osteoblastic IDG-SW3 cells were differentiated into mature osteocytes. We evaluated proliferation and differentiation properties of the cells on 3D microporous scaffolds of decellularized bone (dBone), poly(L-lactide-co-trimethylene carbonate) lactide (LTMC), and beta-tricalcium phosphate (ß-TCP) under physiological fluid flow conditions over 21 days. Osteocyte viability and proliferation were similar on the scaffolds with equal distribution of IDG-SW3 cells on dBone and LTMC scaffolds. After seven days, the differentiation marker alkaline phosphatase (Alpl), dentin matrix acidic phosphoprotein 1 (Dmp1), and sclerostin (Sost) were significantly upregulated in IDG-SW3 cells (p = 0.05) on LTMC scaffolds under fluid flow conditions at 1.7 ml/min, indicating rapid and efficient maturation into osteocytes. Osteocytes responded by inducing the mechanoresponsive genes FBJ osteosarcoma oncogene (Fos) and prostaglandin-endoperoxide synthase 2 (Ptgs2) under perfusion and dynamic compressive loading at 1 Hz with 5 % strain. Together, we successfully created a 3D biomimetic platform as a robust tool to evaluate osteocyte differentiation and mechanobiology in vitro while recapitulating in vivo mechanical cues such as fluid flow within the lacuno-canalicular network. STATEMENT OF SIGNIFICANCE: This study highlights the importance of creating a three-dimensional (3D) in vitro model to study osteocyte differentiation and mechanobiology, as cellular functions are limited in two-dimensional (2D) models lacking in vivo tissue organization. By using a perfusion bioreactor platform, physiological conditions of fluid flow and compressive loading were mimicked to which osteocytes are exposed in vivo. Microporous poly(L-lactide-co-trimethylene carbonate) lactide (LTMC) scaffolds in 3D are identified as a valuable tool to create a favorable environment for osteocyte differentiation and to enable mechanical stimulation of osteocytes by perfusion and compressive loading. The LTMC platform imitates the mechanical bone environment of osteocytes, allowing the analysis of the interaction with other cell types in bone under in vivo biophysical stimuli.


Asunto(s)
Reactores Biológicos , Diferenciación Celular , Osteocitos , Osteocitos/citología , Osteocitos/metabolismo , Animales , Andamios del Tejido/química , Ratones , Perfusión , Estrés Mecánico , Línea Celular , Proliferación Celular , Fuerza Compresiva , Modelos Biológicos
15.
Pharm Dev Technol ; : 1-12, 2024 Jul 24.
Artículo en Inglés | MEDLINE | ID: mdl-39045751

RESUMEN

Hesperidin (HSP) is a natural flavonoid glycoside with very low aqueous solubility and a slow dissolution rate, limiting its effectiveness. This study aims to address these issues by creating co-crystals of hesperidin with water-soluble small molecules (co-formers) such as L-arginine, glutathione, glycine, and nicotinamide. Using the solvent drop grinding method, we prepared three different molar ratios of hesperidin to co-formers (1:1, 1:3, and 1:5) and conducted in-vitro solubility and dissolution studies. The results demonstrated that the prepared co-crystals exhibited significantly enhanced solubility and dissolution rates compared to untreated hesperidin. Of particular note, the HSP co-crystals formula (HSP: L-arg 1:5) displayed approximately 4.5 times higher dissolution than pure hesperidin. Further analysis using FTIR, powder x-ray diffraction patterns, and DSC thermograms validated the formation of co-crystals between HSP and L-arginine. Additionally, co-crystallization with L-arginine improved the in vitro anti-inflammatory and antioxidant activities of hesperidin compared to the untreated drug. This study highlights the potential of using water-soluble small molecules (co-formers) through co-crystallization to enhance the solubility, dissolution, and biological activities of poorly water-soluble drugs. Furthermore, in vivo studies are crucial to validate these promising results.

16.
Cureus ; 16(6): e63163, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-39070336

RESUMEN

BACKGROUND: The term "cellulitis" is frequently used to describe a non-necrotizing inflammation of the skin and subcutaneous tissues that is typically caused by an acute infection and does not affect the muscles or fascia. Warmth, erythema, tenderness, swelling, and localized pain are the hallmarks of cellulitis. Life-threatening and debilitating outcomes from cellulitis include necrotizing fasciitis, necrotizing hypodermitis, abscess formation, septic shock, and, in extreme cases, death. The current study aimed to assess public awareness of cellulitis in the Al-Qunfudhah region, Saudi Arabia. METHODS: A descriptive cross-sectional study was conducted targeting all residents in Al-Qunfudhah, Saudi Arabia, during the period from January to March 2024. Data were collected using a pre-structured online questionnaire. The study questionnaire included participants' demographic data, cellulitis data, and knowledge and attitude towards cellulitis. The final questionnaire was uploaded online using social media platforms by the researchers and their friends until no more new participants were included. RESULTS: A total of 470 records were analyzed. Among the respondents, the majority were male (n=347, 73.8%), and the highest proportion fell within the age range of 18 to 25 years (n=174, 37.0%). The highest proportion of respondents correctly identified cellulitis as a medical condition affecting the skin and soft tissues underneath it, typically caused by infection or injury (n=278, 59.1%). Additionally, the majority acknowledged that cellulitis can cause pain, swelling, and redness in the affected area (n=240, 51.1%). As for factors associated with awareness of cellulitis, significant associations were found with age group (p=0.031), educational levels (p=0.003), and employment status (p=0.002). CONCLUSIONS: This study revealed a high level of awareness of cellulitis among participants, especially highly educated and employed participants. Participants believed that healthcare providers play a crucial role in raising population awareness of cellulitis health problems.

17.
Artículo en Inglés | MEDLINE | ID: mdl-39073420

RESUMEN

This review paper provides an in-depth analysis of Perovskite quantum dots (PQDs), a class of nanomaterials with unique optical and electronic properties that hold immense potential for various technological applications. The paper delves into the structural characteristics, synthesis methods, and characterization techniques of PQDs, highlighting their distinct advantages over other Quantum Dots (QDs). Various applications of PQDs in fields such as solar cells, LEDs, bioimaging, photocatalysis, and sensors are discussed, showcasing their versatility and promising capabilities. The ongoing advancements in PQD research and development point towards a bright future for these nanostructures in revolutionizing diverse industries and technologies.

18.
J Mol Model ; 30(8): 297, 2024 Jul 31.
Artículo en Inglés | MEDLINE | ID: mdl-39085447

RESUMEN

CONTEXT: Phographene and its family member structures are of the newly proposed semiconductors for detection of chemicals. That is, in this project, the potential of using α-phographene (α-POG) both for adsorption and detection of five types of the most important air pollutant gases containing SO2, AsH3, CF3H, NO2, and CO2 species were investigated.  The results of the time dependent density functional theory (TD-DFT) calculations indicate that during the adsorption of NO2, and SO2 by the sorbent, big redshifts occur (up to 866.2 nm, and 936.5, respectively) resulting in considerable changes in the orbitals and the electronic structures of the systems. Moreover, the results of the thermodynamic calculations reveal that α-POG could selectively adsorb SO2, NO2, and AsH3 gases (with different orders), but it could not adsorb the two other gases.Finally, the outcome of the band gap calculations shows that between all mentioned gases, α-POG could selectively detect the presence of SO2, and then NO2; while, this nanosheet could not sense the existence of AsH3, CF3H, or CO2 gases. METHODS: All of the calculations were carried out by using the Gaussian 03 quantum chemical package. In addition, the physiochemical parameters were extracted from the output files for further calculations. Studies on all saddle points and the following calculations were performed applying the B3LYP/6-311g(d,p) level of theory.

19.
Med Oncol ; 41(8): 201, 2024 Jul 13.
Artículo en Inglés | MEDLINE | ID: mdl-39001987

RESUMEN

Pancreatic cancer remains a significant health issue with limited treatment options. The tumor stroma, a complex environment made up of different cells and proteins, plays a crucial role in tumor growth and chemoresistance. Targeting tumor stroma, consisting of diverse non-tumor cells such as fibroblasts, extracellular matrix (ECM), immune cells, and also pre-vascular cells is encouraging for remodeling solid cancers, such as pancreatic cancer. Remodeling the stroma of pancreas tumors can be suggested as a strategy for reducing resistance to chemo/immunotherapy. Several studies have shown that phytochemicals from plants can affect the tumor environment and have anti-cancer properties. By targeting key pathways involved in stromal activation, phytochemicals may disrupt communication between the tumor and stroma and make tumor cells more sensitive to different treatments. Additionally, phytochemicals have immunomodulatory and anti-angiogenic properties, all of which contribute to their potential in treating pancreatic cancer. This review will provide a detailed look at how phytochemicals impact the tumor stroma and their effects on pancreatic tumor growth, spread, and response to treatment. It will also explore the potential of combining phytochemicals with other treatment options like chemotherapy, immunotherapy, and radiation.


Asunto(s)
Neoplasias Pancreáticas , Fitoquímicos , Microambiente Tumoral , Humanos , Neoplasias Pancreáticas/tratamiento farmacológico , Neoplasias Pancreáticas/patología , Microambiente Tumoral/efectos de los fármacos , Fitoquímicos/farmacología , Fitoquímicos/uso terapéutico , Animales , Antineoplásicos Fitogénicos/farmacología , Antineoplásicos Fitogénicos/uso terapéutico , Nanopartículas
20.
Med Oncol ; 41(8): 202, 2024 Jul 15.
Artículo en Inglés | MEDLINE | ID: mdl-39008137

RESUMEN

Proprotein convertase subtilisin/kexin type 9 (PCSK9), a well-known regulator of cholesterol metabolism and cardiovascular diseases, has recently garnered attention for its emerging involvement in cancer biology. The multifunctional nature of PCSK9 extends beyond lipid regulation and encompasses a wide range of cellular processes that can influence cancer progression. Studies have revealed that PCSK9 can modulate signaling pathways, such as PI3K/Akt, MAPK, and Wnt/ß-catenin, thereby influencing cellular proliferation, survival, and angiogenesis. Additionally, the interplay between PCSK9 and cholesterol homeostasis may impact membrane dynamics and cellular migration, further influencing tumor aggressiveness. The central role of the immune system in monitoring and controlling cancer is increasingly recognized. Recent research has demonstrated the ability of PCSK9 to modulate immune responses through interactions with immune cells and components of the tumor microenvironment. This includes effects on dendritic cell maturation, T cell activation, and cytokine production, suggesting a role in shaping antitumor immune responses. Moreover, the potential influence of PCSK9 on immune checkpoints such as PD1/PD-L1 lends an additional layer of complexity to its immunomodulatory functions. The growing interest in cancer immunotherapy has prompted exploration into the potential of targeting PCSK9 for therapeutic benefits. Preclinical studies have demonstrated synergistic effects between PCSK9 inhibitors and established immunotherapies, offering a novel avenue for combination treatments. The strategic manipulation of PCSK9 to enhance tumor immunity and improve therapeutic outcomes presents an exciting area for further investigations. Understanding the mechanisms by which PCSK9 influences cancer biology and immunity holds promise for the development of novel immunotherapeutic approaches. This review aims to provide a comprehensive analysis of the intricate connections between PCSK9, cancer pathogenesis, tumor immunity, and the potential implications for immunotherapeutic interventions.


Asunto(s)
Inmunoterapia , Neoplasias , Proproteína Convertasa 9 , Humanos , Neoplasias/inmunología , Neoplasias/terapia , Neoplasias/metabolismo , Neoplasias/patología , Proproteína Convertasa 9/inmunología , Proproteína Convertasa 9/metabolismo , Inmunoterapia/métodos , Microambiente Tumoral/inmunología , Animales , Inhibidores de PCSK9
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