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1.
Surg Radiol Anat ; 46(7): 1057-1062, 2024 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-38717501

RESUMEN

BACKGROUND: Koerner's septum (KS) is a bony plate located at the junction of the petrous and squamous parts of the temporal bone. The reported prevalence of KS varied between studies. KS variations are associated with various pathologies and pose difficulties during surgeries. The study aims to determine the KS frequency in Omani patients and analyze its association with sex and side. METHODS: The present study investigated the KS topography in 344 computed tomography (CT) scans of normal temporal bones of adult Omani patients at Sultan Qaboos University Hospital. The presence of KS and its parts (complete or incomplete), as well as its thickness at three anatomical landmarks were recorded. Additionally, sex and laterality differences in KS parameters were analyzed using a Chi-square test. RESULTS: The overall frequency of KS among Omani subjects was 39.5%. The complete KS was observed only in 14% of cases. The thickness of KS was 0.78 ± 0.21 mm, 0.93 ± 0.28 mm and 0.78 ± 0.21 mm at the head of the malleus (HM), the superior semicircular canal (SSC) and the tympanic sinus (TS), respectively (p < 0.01). KS was present most constantly at the level of HM (64.7%), followed by SSC (57.4%), and less constantly at the level of TS (49.3%). KS frequency was similar in both males than females (41.9% vs 37.3%), with statistically insignificant difference (p = 0.38). No side differences were observed concerning KS frequency (p = 0.955). CONCLUSION: The KS frequency in Omani subjects within the range of previously reported studies. It is incomplete in most of the cases and constantly present at the level of HM. Its thickness is more at the level of SSC.


Asunto(s)
Variación Anatómica , Hueso Temporal , Tomografía Computarizada por Rayos X , Humanos , Masculino , Femenino , Adulto , Persona de Mediana Edad , Omán , Hueso Temporal/diagnóstico por imagen , Hueso Temporal/anatomía & histología , Anciano , Adulto Joven , Factores Sexuales , Adolescente , Puntos Anatómicos de Referencia
2.
Surg Radiol Anat ; 46(3): 263-270, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38280004

RESUMEN

BACKGROUND: The parietal foramen (PF) of the skull is a variable anatomic feature with important implications for venous drainage, infection, and injury. Its topography is clinically relevant for neurosurgeons for intracranial navigation and preoperative planning. METHODS: PF topography was investigated in a series of 440 head computed-tomography scans of Omani subjects at Sultan Qaboos University Hospital. The mean age of the patients was 52 ± 17 years and there were 160 males and 280 females. The topography features of the PF, including frequency, diameter, patency, and relative position in relation to the superior sagittal sinus (SSS), were recorded. Additionally, sex and laterality differences in PF parameters were analyzed using a Chi-square test. RESULTS: The overall prevalence of PF was 72.3% (318/440). The bilateral presence of PF was identified in 34% of skulls. Unilateral right-side prevalence was 18.2%, while left prevalence was 13.2% (p = 0.62). The prevalence of unilateral accessory PF on the right side was 1.8%, while it was 1.1% on the left (p = 0.69). PF within the sagittal suture/or intra-sutural PF was observed in 6.8% of skulls, with a frequency of 9.4% in men and 5.4% in women (p = 0.29). The diameter of the PF was 1.45 ± 0.74 mm on the right side, and 1.54 ± 0.99 mm on the left side (p = 0.96). There were 2% of incomplete PF. The PF was located over the SSS in 70.3% on the right side and 53.8% on the left side. No significant differences were observed between the PF topography parameters and sex or laterality. CONCLUSION: The present study for the first time reports the baseline data of PF topography in a large sample of CT scans in the Arab population. The geography and race influence the PF topography differences. PF may be used as a reliable landmark of SSS. The morphological characteristics and distribution of PF reported in this study have clinical implications for imaging diagnosis, intracranial navigation of vascular disorders, and treatment.


Asunto(s)
Hueso Esfenoides , Tomografía Computarizada por Rayos X , Masculino , Adulto , Humanos , Femenino , Persona de Mediana Edad , Anciano , Estudios Retrospectivos , Seno Sagital Superior , Cabeza
3.
Molecules ; 27(17)2022 Aug 24.
Artículo en Inglés | MEDLINE | ID: mdl-36080155

RESUMEN

Bisphenol A (BPA) is a ubiquitous environmental toxin with deleterious endocrine-disrupting effects. It is widely used in producing epoxy resins, polycarbonate plastics, and polyvinyl chloride plastics. Human beings are regularly exposed to BPA through inhalation, ingestion, and topical absorption routes. The prevalence of BPA exposure has considerably increased over the past decades. Previous research studies have found a plethora of evidence of BPA's harmful effects. Interestingly, even at a lower concentration, this industrial product was found to be harmful at cellular and tissue levels, affecting various body functions. A noble and possible treatment could be made plausible by using natural products (NPs). In this review, we highlight existing experimental evidence of NPs against BPA exposure-induced adverse effects, which involve the body's reproductive, neurological, hepatic, renal, cardiovascular, and endocrine systems. The review also focuses on the targeted signaling pathways of NPs involved in BPA-induced toxicity. Although potential molecular mechanisms underlying BPA-induced toxicity have been investigated, there is currently no specific targeted treatment for BPA-induced toxicity. Hence, natural products could be considered for future therapeutic use against adverse and harmful effects of BPA exposure.


Asunto(s)
Productos Biológicos , Disruptores Endocrinos , Compuestos de Bencidrilo/toxicidad , Productos Biológicos/farmacología , Disruptores Endocrinos/análisis , Disruptores Endocrinos/toxicidad , Humanos , Fenoles , Plásticos
4.
Surg Radiol Anat ; 44(10): 1361-1366, 2022 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-36190533

RESUMEN

INTRODUCTION: Cervical ribs are the supernumerary ribs that usually arise from the seventh cervical vertebra. Ethnic and geographical variations in cervical ribs and elongated transverse processes have been reported. Therefore, we aimed to study the prevalence of cervical ribs and elongated transverse processes and morphometry of cervical ribs in Omani subjects using computed tomography (CT). METHODS: A total of 1165 consecutive patients' CT scans of the cervical spine who had visited the tertiary care hospital from January 2016 to December 2020 were included in the study. The CT scans were screened for cervical ribs and elongated C7 transverse processes. Fisher's exact test was used to determine the gender influence. RESULTS: Cervical ribs were identified in 0.94% of patients with a male-to-female ratio of 0.37:1. Most cervical ribs were unilateral (54%). The elongated C7 transverse process was identified in 18.45% of patients, with a male-to-female ratio of 1.36:1. Female patients are more likely to have cervical ribs (effect size = 5.98, 95% CI = 1.58-22.6, p = 0.005) than male patients. In contrast, the elongated C7 transverse process is more frequent in males (effect size = 1.82, 95% CI = 1.34-2.47, p < 0.001). The length and width of the cervical ribs are presented. CONCLUSION: The prevalence of cervical ribs in Omani subjects is close to that of accepted prevalence worldwide. However, the elongated C7 transverse process prevalence is comparatively high and close to the Saudi population.


Asunto(s)
Costilla Cervical , Humanos , Masculino , Femenino , Costilla Cervical/diagnóstico por imagen , Cuerpo Vertebral , Prevalencia , Vértebras Cervicales/diagnóstico por imagen , Tomografía Computarizada por Rayos X
5.
J Craniofac Surg ; 31(7): 2015-2016, 2020 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-32472879

RESUMEN

Knowledge of variant course and branching pattern of the facial artery gains importance in the surgeries of upper neck and face. The authors report a unilateral anomalous course and a redundant loop of right facial artery as seen in an adult male cadaver. The right facial artery had its origin from the external carotid artery. It pierced through the submandibular salivary gland and formed a redundant loop at the base of the mandible. Its further course and branching pattern was normal. This case could be important for radiologists, plastic surgeons and craniofacial surgeons.


Asunto(s)
Arteria Carótida Externa/cirugía , Cara/irrigación sanguínea , Cara/cirugía , Mandíbula/irrigación sanguínea , Mandíbula/cirugía , Glándula Submandibular/irrigación sanguínea , Glándula Submandibular/cirugía , Anciano , Cadáver , Humanos , Masculino
6.
JOP ; 15(6): 609-10, 2014 Nov 28.
Artículo en Inglés | MEDLINE | ID: mdl-25435580

RESUMEN

CONTEXT: Knowledge of variations of the vessels closely related to the pancreas adds greatly to the success of pancreatic surgery. Splenic vein is one of the vessels that are closely related to the pancreas. Its variations might not only change the haemodynamics in the vein but also cause unexpected bleeding during pancreatic surgery. CASE REPORT: During our dissection classes, we noted the variations in the course and termination of the splenic vein. After emerging from the spleen, it coursed upward and to the right, embedded in a groove on the anterior surface of body of pancreas. After reaching the upper border, it turned downwards and entered the body of the pancreas. After having a downward course in the body of pancreas, it emerged out and united with the superior mesenteric vein at an angle of about 160 degrees to form the portal vein. CONCLUSION: This peculiar course of the vein might predispose it for thrombosis in case of pancreatitis. It can also lead to iatrogenic injuries during pancreatic or splenic surgeries.

7.
Anat Sci Educ ; 17(4): 712-721, 2024 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-38591116

RESUMEN

Plastination, a permanent preservation method for human tissues and organs, is increasingly being used in anatomy education. However, there is a paucity of systematic reviews and meta-analyses summarizing the educational efficacy of plastinated specimens. This meta-analysis compared the assessment scores of students exposed to plastinated specimens against those exposed to other common instructional methods. A systematic search was conducted through four databases, from 2000 to July 2022. Titles and abstracts of the retrieved records were screened according to predetermined eligibility criteria. Of the 159 records screened, 18 were subjected to full-text review. Among the 18 studies, five articles reported post-intervention test scores for intervention (plastinated) and control (other modalities) groups. Studies were subjected to GRADE quality assessment, and four studies with moderate to high ratings were included for meta-analysis. Students' perceptions (n = 15 studies) were qualitatively analyzed using an inductive narrative analysis. No significant effect was detected between the intervention (n = 417) and control groups (n = 422) (standardized mean difference = 0.08; 95% CI [-0.36, 0.52]; p = 0.73). Four themes emerged from students' perceptions: ease of use, motivation to study, spatial understanding, and learning preference. Overall, student performance outcomes comparing the use of plastinated specimens versus other instructional modalities are very limited. This meta-analysis suggests that knowledge gained from plastinated specimens is comparable to learning achieved through other modalities; though this outcome should be interpreted with caution as there is currently insufficient evidence for definitive conclusions.


Asunto(s)
Anatomía , Plastinación , Humanos , Anatomía/educación , Cadáver , Curriculum , Educación de Pregrado en Medicina/métodos , Evaluación Educacional/estadística & datos numéricos , Aprendizaje , Plastinación/métodos , Manejo de Especímenes/métodos
8.
Curr Med Chem ; 2024 May 16.
Artículo en Inglés | MEDLINE | ID: mdl-38757322

RESUMEN

Globally, cardiovascular diseases (CVDs) are the main cause of mortality every year worldwide. CVD health is influenced by various health factors, such as blood pressure, cholesterol levels, and glucose control. The main risk factors include smoking, physical activity, food intake, and body mass index. Around 90% of CVDs could be prevented by controlling these risk factors. Heavy metals are indigenous to the environment of the earth. However, modern lifestyles have led to the exploitation of our environment by unconstrained use of heavy metals. Though heavy metals are essential components, they are hazardous to humans and living systems due to their persistent and non-degradable nature. The mainpurpose of this study is to provide a literature review on the mechanisms of heavy metals, particularly arsenic, lead, and cadmium, that cause cardiovascular diseases. The major mechanism by which heavy metals result in various modalities of cardiovascular disease is the generation of reactive species and the depletionof the antioxidant reserves inside the biological system. The generation of reactive species gradually leads to the activation of various signaling pathways, resulting in either apoptosis or unrestricted cell growth. These unfavorable conditions result in a state when there is an imbalance between reactive species generation and antioxidant activity. Both endogenously present antioxidants and dietary antioxidants are very much essential in regulating the redox potential of the body. They help in the detoxification and excretion of heavy metals and their metabolites in the biological system. Therefore, recognizing the role of heavy metals in cardiovascular health is crucial for developing preventive strategies and interventions aimed at mitigating their adverse effects on human health.

9.
Diagnostics (Basel) ; 14(13)2024 Jul 04.
Artículo en Inglés | MEDLINE | ID: mdl-39001321

RESUMEN

Single photon emission tomography/computed tomography (SPECT/CT) is a mature imaging technology with a dynamic role in the diagnosis and monitoring of a wide array of diseases. This paper reviews the technological advances, clinical impact, and future directions of SPECT and SPECT/CT imaging. The focus of this review is on signal amplifier devices, detector materials, camera head and collimator designs, image reconstruction techniques, and quantitative methods. Bulky photomultiplier tubes (PMTs) are being replaced by position-sensitive PMTs (PSPMTs), avalanche photodiodes (APDs), and silicon PMs to achieve higher detection efficiency and improved energy resolution and spatial resolution. Most recently, new SPECT cameras have been designed for cardiac imaging. The new design involves using specialised collimators in conjunction with conventional sodium iodide detectors (NaI(Tl)) or an L-shaped camera head, which utilises semiconductor detector materials such as CdZnTe (CZT: cadmium-zinc-telluride). The clinical benefits of the new design include shorter scanning times, improved image quality, enhanced patient comfort, reduced claustrophobic effects, and decreased overall size, particularly in specialised clinical centres. These noticeable improvements are also attributed to the implementation of resolution-recovery iterative reconstructions. Immense efforts have been made to establish SPECT and SPECT/CT imaging as quantitative tools by incorporating camera-specific modelling. Moreover, this review includes clinical examples in oncology, neurology, cardiology, musculoskeletal, and infection, demonstrating the impact of these advancements on clinical practice in radiology and molecular imaging departments.

10.
Artículo en Inglés | MEDLINE | ID: mdl-38299284

RESUMEN

Endocrine-disrupting chemicals (EDCs) are environmental pollutants. Since EDCs are present in various consumer products, contamination of human beings is very common. EDCs have deleterious effects on various systems of the body, especially the endocrine and reproductive systems. EDCs interfere with the synthesis, metabolism, binding, or cellular responses of natural estrogens and alter various pathways. Biological samples such as blood, saliva, milk, placental tissue, and hair are frequently used for biomonitoring and the detection of EDCs. Early detection and intervention may help in preventing congenital anomalies and birth defects. The common methods for determining the presence of EDCs in body fluids include gas chromatography, high-performance liquid chromatography, and mass spectrometry. Understanding the health effects and dangers of EDC is important, given their widespread use. This mini-review aims to summarize the adverse biological effects of several important classes of EDCs and highlights future perspectives for appropriate control.

11.
Diagnostics (Basel) ; 14(1)2024 Jan 03.
Artículo en Inglés | MEDLINE | ID: mdl-38201412

RESUMEN

Chronic rhinosinusitis (CRS) can have a significant impact on quality of life. With persistent symptoms and the failure of initial medical treatments, surgical management is indicated. Despite the excellent results of endoscopic sinus surgery for persistent CRS, it is quite a challenging procedure for frontal sinusitis given the complex anatomy and location of the frontal sinus. Frontal recess cells significantly contribute to the complexity of the frontal sinus, and numerous studies have sought to establish their association with sinusitis. This review offers a comprehensive understanding of frontal recess cells, their different classifications, their prevalence among different populations, and their relationship to sinusitis. After an extensive review of the current literature, the International Frontal Sinus Anatomy Classification (IFAC) is the most recent classification method and a preferred practical preoperative assessment tool. Although the agger nasi cell is the most prevalent cell among all reported populations, ethnic variations are still influencing the other cells' distribution. Studies are inconsistent in reporting a relationship between frontal recess cells and sinusitis, and that is mainly because of the differences in the classification methods used. More research using a standardized classification method is needed to understand the association between frontal recess cells and sinusitis.

12.
JOP ; 14(4): 454-7, 2013 Jul 10.
Artículo en Inglés | MEDLINE | ID: mdl-23846947

RESUMEN

CONTEXT: The pancreas is formed by ventral and dorsal pancreatic buds which arise from the endodermal lining of the gut. When the duodenum rotates to the right, the ventral pancreatic bud migrates dorsally and finally come and lie below the dorsal pancreatic bud. The developmental errors in the rotation of these components lead to annular pancreas. CASE REPORT: We report a rare type of the incomplete annular pancreas around the contents of right free margin of lesser omentum. There was an extra pancreatic mass situated horizontally immediately above the superior border of the pancreas, situated behind the lesser omentum. The right end of this mass extended into the epiploic foramen and incompletely encircled the portal vein, bile duct and hepatic artery proper from behind. The left end of the extra pancreatic mass was extended towards the lesser curvature of the stomach. Further, this mass completely surrounded the origin of three branches of the celiac trunk. Its right end was found to be continuous with the head of the pancreas, close to the pylorus. Histology of the extra pancreatic mass revealed the presence of normal pancreatic tissue. CONCLUSION: preoperative diagnosis of this rare anomaly is of clinical importance during surgeries involving the contents of right free margin of lesser omentum and epiploic foramen.


Asunto(s)
Páncreas/anomalías , Enfermedades Pancreáticas/diagnóstico , Cadáver , Humanos , Masculino , Persona de Mediana Edad
13.
Curr Med Chem ; 30(13): 1502-1528, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-35078392

RESUMEN

All cells and intracellular components are remodeled and recycled in order to replace the old and damaged cells. Autophagy is a process by which damaged, and unwanted cells are degraded in the lysosomes. There are three different types of autophagy: macroautophagy, microautophagy, and chaperone-mediated autophagy. Autophagy has an effect on adaptive and innate immunity, suppression of any tumour, and the elimination of various microbial pathogens. The process of autophagy has both positive and negative effects, and this pertains to any specific disease or its stage of progression. Autophagy involves various processes which are controlled by various signaling pathways, such as Jun N-terminal kinase, GSK3, ERK1, Leucine-rich repeat kinase 2, and PTEN-induced putative kinase 1 and parkin RBR E3. Protein kinases are also important for the regulation of autophagy as they regulate the process of autophagy either by activation or inhibition. The present review discusses the kinase catalyzed phosphorylated reactions, the kinase inhibitors, types of protein kinase inhibitors and their binding properties to protein kinase domains, the structures of active and inactive kinases, and the hydrophobic spine structures in active and inactive protein kinase domains. The intervention of autophagy by targeting specific kinases may form the mainstay of treatment of many diseases and lead the road to future drug discovery.


Asunto(s)
Autofagia , Inhibidores de Proteínas Quinasas , Humanos , Autofagia/efectos de los fármacos , Autofagia/inmunología , Glucógeno Sintasa Quinasa 3/antagonistas & inhibidores , Glucógeno Sintasa Quinasa 3/metabolismo , Inmunidad Innata , Transducción de Señal , Inhibidores de Proteínas Quinasas/farmacología
14.
Biomolecules ; 13(1)2023 01 09.
Artículo en Inglés | MEDLINE | ID: mdl-36671523

RESUMEN

Gum arabic (GA) is a natural product commonly used as a household remedy for treating various diseases in the Sub-Saharan Africa region. Despite its claimed benefits, there has been a lack of research on the findings of current clinical trials (CTs) that investigated its efficacy in the treatment of various medical diseases. The aim of this systematic review was to study CTs which focused on GA and its possible use in the management of various medical diseases. A search of the extant literature was performed in the PubMed, Scopus, and Cochrane databases to retrieve CTs focusing on evidence-based clinical indications. The databases were searched using the keywords ("Gum Arabic" OR "Acacia senegal" OR "Acacia seyal" OR "Gum Acacia" OR "Acacia Arabica") AND ("Clinical Trial" OR "Randomized Controlled Trial" OR "Randomized Clinical Trial"). While performing the systematic review, data were obtained on the following parameters: title, authors, date of publication, study design, study aim, sample size, type of intervention used, targeted medical diseases, and main findings. Twenty-nine papers were included in this systematic review. The results showed that ingestion of GA altered lipid profiles, renal profiles, plaque, gingival scores, biochemical parameters, blood pressure, inflammatory markers, and adiposity. GA exhibited anti-inflammatory, prebiotic, and antibacterial properties. GA has been successfully used to treat sickle cell anemia, rheumatoid arthritis, metabolic disorders, periodontitis, gastrointestinal conditions, and kidney diseases. Herein, we discuss GA with respect to the underlying mechanisms involved in each medical disease, thereby justifying GA's future role as a therapeutic agent.


Asunto(s)
Acacia , Goma Arábiga , Goma Arábiga/uso terapéutico , Acacia/química , Antiinflamatorios , Adiposidad , Presión Sanguínea
15.
Biomedicines ; 11(8)2023 Aug 15.
Artículo en Inglés | MEDLINE | ID: mdl-37626767

RESUMEN

Factors such as aging, an unhealthy lifestyle with decreased physical activity, snacking, a standard Western diet, and smoking contribute to raising blood pressure to a dangerous level, increasing the risk of coronary artery disease and heart failure. Atherosclerosis, or aging of the blood vessels, is a physiological process that has accelerated in the last decades by the overconsumption of carbohydrates as the primary sources of caloric intake, resulting in increased triglycerides and VLDL-cholesterol and insulin spikes. Classically, medications ranging from beta blockers to angiotensin II blockers and even calcium channel blockers were used alone or in combination with lifestyle modifications as management tools in modern medicine to control arterial blood pressure. However, it is not easy to control blood pressure or the associated complications. A low-carbohydrate, high-fat (LCHF) diet can reduce glucose and insulin spikes, improve insulin sensitivity, and lessen atherosclerosis risk factors. We reviewed articles describing the etiology of insulin resistance (IR) and its impact on arterial blood pressure from databases including PubMed, PubMed Central, and Google Scholar. We discuss how the LCHF diet is beneficial to maintaining arterial blood pressure at normal levels, slowing down the progression of atherosclerosis, and reducing the use of antihypertensive medications. The mechanisms involved in IR associated with hypertension are also highlighted.

16.
F1000Res ; 12: 71, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-37811203

RESUMEN

Background: The pneumatization of the frontal sinus is variable between individuals, including monozygotic twins. The volumetric anatomic variants of the frontal sinus are classified into aplasia, hypoplasia, medium-sized, and hyperplasia. We aimed to study the frontal sinus morphology in Omani patients using computed tomography (CT) evaluations. Methods: Retrospectively, 1220 frontal sinus CT scans from 610 patients investigated at Sultan Qaboos University Hospital, Oman, from January 2019 to December 2020 were reviewed. The frontal sinus morphology was classified according to the classification proposed by Guerram et al. The Chi-square test was used to determine the influence of sex. Results: With regard to the unilateral occurrence, the most prevalent frontal sinus category observed was medium-sized (13.3%), followed by hyperplasia (7.9%), hypoplasia (5.4%), and aplasia (2%) categories. Similarly, in bilateral occurrence, the most common frontal sinus category observed was medium-sized (53%), followed by hyperplasia (13.1%), hypoplasia (3.4%) and aplasia (2%) categories. Right and left frontal sinus aplasia were observed in 2.1% and 1.8% of cases, respectively. In terms of sex influence, the left unilateral ( p<0.01) and the bilateral hypoplasia ( p<0.05) were significantly higher in females. On the other hand, the left unilateral ( p<0.01) and the bilateral hyperplasia ( p<0.05) were higher in males. Conclusions: The baseline data of frontal sinus category frequencies reported in the present study is helpful in the diagnostic evaluation of sinusitis in the clinical setting. The preoperative recognition of frontal sinus types, particularly frontal sinus aplasia in multiplanar CT scans, is crucial to avoid unexpected complications while performing endoscopic sinus surgery.


Asunto(s)
Seno Frontal , Femenino , Humanos , Masculino , Variación Anatómica , Seno Frontal/diagnóstico por imagen , Seno Frontal/anomalías , Hiperplasia , Estudios Retrospectivos , Tomografía Computarizada por Rayos X/métodos
17.
Plants (Basel) ; 12(12)2023 Jun 12.
Artículo en Inglés | MEDLINE | ID: mdl-37375903

RESUMEN

There are various herbicides which were used in the agriculture industry. Atrazine (ATZ) is a chlorinated triazine herbicide that consists of a ring structure, known as the triazine ring, along with a chlorine atom and five nitrogen atoms. ATZ is a water-soluble herbicide, which makes it capable of easily infiltrating into majority of the aquatic ecosystems. There are reports of toxic effects of ATZ on different systems of the body but, unfortunately, majority of these scientific reports were documented in animals. The herbicide was reported to enter the body through various routes. The toxicity of the herbicide can cause deleterious effects on the respiratory, reproductive, endocrine, central nervous system, gastrointestinal, and urinary systems of the human body. Alarmingly, few studies in industrial workers showed ATZ exposure leading to cancer. We embarked on the present review to discuss the mechanism of action of ATZ toxicity for which there is no specific antidote or drug. Evidence-based published literature on the effective use of natural products such as lycopene, curcumin, Panax ginseng, Spirulina platensis, Fucoidans, vitamin C, soyabeans, quercetin, L-carnitine, Telfairia occidentalis, vitamin E, Garcinia kola, melatonin, selenium, Isatis indigotica, polyphenols, Acacia nilotica, and Zingiber officinale were discussed in detail. In the absence of any particular allopathic drug, the present review may open the doors for future drug design involving the natural products and their active compounds.

18.
Nutrients ; 14(3)2022 Jan 26.
Artículo en Inglés | MEDLINE | ID: mdl-35276895

RESUMEN

Glaucoma is one of the leading causes of irreversible blindness. It is generally caused by increased intraocular pressure, which results in damage of the optic nerve and retinal ganglion cells, ultimately leading to visual field dysfunction. However, even with the use of intraocular pressure-lowering eye drops, the disease still progresses in some patients. In addition to mechanical and vascular dysfunctions of the eye, oxidative stress, neuroinflammation and excitotoxicity have also been implicated in the pathogenesis of glaucoma. Hence, the use of natural products with antioxidant and anti-inflammatory properties may represent an alternative approach for glaucoma treatment. The present review highlights recent preclinical and clinical studies on various natural products shown to possess neuroprotective properties for retinal ganglion cells, which thereby may be effective in the treatment of glaucoma. Intraocular pressure can be reduced by baicalein, forskolin, marijuana, ginsenoside, resveratrol and hesperidin. Alternatively, Ginkgo biloba, Lycium barbarum, Diospyros kaki, Tripterygium wilfordii, saffron, curcumin, caffeine, anthocyanin, coenzyme Q10 and vitamins B3 and D have shown neuroprotective effects on retinal ganglion cells via various mechanisms, especially antioxidant, anti-inflammatory and anti-apoptosis mechanisms. Extensive studies are still required in the future to ensure natural products' efficacy and safety to serve as an alternative therapy for glaucoma.


Asunto(s)
Productos Biológicos , Glaucoma , Productos Biológicos/farmacología , Productos Biológicos/uso terapéutico , Glaucoma/patología , Humanos , Presión Intraocular , Neuroprotección , Células Ganglionares de la Retina/patología
19.
Artículo en Inglés | MEDLINE | ID: mdl-36293903

RESUMEN

In recent times, online teaching and assessment have provided a great opportunity to explore better methods in medical education. There are inconsistent views concerning the effectiveness of online assessment. Hence, the present study aimed to evaluate online teaching and assessment methods in relation to face-to-face methods by comparing students' performances. The students' assessment results in two basic anatomy courses, which are part of the Doctor of Medicine and Biomedical Sciences programs at Sultan Qaboos University, were analysed. We compared the students' mean scores and coefficient of variance in the multiple-choice written exams and the objective structured practical exams during the spring semesters of 2019, 2020, and 2021, containing face-to-face teaching and exams, partial online teaching and online exams, and online teaching and both proctored online and face-to-face exams, respectively. The sudden transition to online teaching and assessment halfway through the semester resulted in higher means and a lower coefficient of variance among students' scores in both theory and practical exams. However, when the fully adopted online method of teaching and assessment was employed, the mean scores decreased, and the coefficient of variance increased to figures close to those witnessed before the pandemic, when teaching and assessment were face-to-face. This trend applied to both the Doctor of Medicine and Biomedical Sciences programs' anatomy courses. The results indicate that online assessment of theoretical and practical anatomical knowledge is comparable to that of face-to-face assessment. However, proper planning and preparedness are mandatory to achieve the desired outcomes.


Asunto(s)
Pandemias , Estudiantes de Medicina , Humanos , Universidades , Enseñanza
20.
Mini Rev Med Chem ; 22(17): 2213-2223, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-35156578

RESUMEN

Bisphenol A (4,4'-isopropylidenediphenol) is an organic compound commonly used in plastic bottles, packaging containers, beverages, and resin industry. The adverse effects of bisphenol A in various systems of the body have been studied. Autophagy is a lysosomal degradation process that leads to the regeneration of new cells. The role of bisphenol A in autophagy modulation involved in the pathogenesis of diseases is still debatable. A few research studies have shown bisphenol Ainduced adverse effects to be associated with autophagy dysregulation, while a few have shown the activation of autophagy to be mediated by bisphenol A. Such contrasting views make the subject more interesting and debatable. In the present review, we discuss the different steps of autophagy, genes involved, and the effect of autophagy modulation by bisphenol A on different systems of the body. We also discuss the methods for monitoring autophagy and the roles of drugs, such as chloroquine, verteporfin, and rapamycin, in autophagy. A proper understanding of the role of bisphenol A in the modulation of autophagy may be important for future treatment and drug discovery.


Asunto(s)
Autofagia , Compuestos de Bencidrilo , Compuestos de Bencidrilo/farmacología , Lisosomas/metabolismo , Fenoles/farmacología
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