Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 15 de 15
Filter
1.
Sci Rep ; 14(1): 13569, 2024 06 12.
Article in English | MEDLINE | ID: mdl-38866844

ABSTRACT

Revolutionizing construction, the concrete blend seamlessly integrates human hair (HH) fibers and millet husk ash (MHA) as a sustainable alternative. By repurposing human hair for enhanced tensile strength and utilizing millet husk ash to replace sand, these materials not only reduce waste but also create a durable, eco-friendly solution. This groundbreaking methodology not only adheres to established structural criteria but also advances the concepts of the circular economy, representing a significant advancement towards environmentally sustainable and resilient building practices. The main purpose of the research is to investigate the fresh and mechanical characteristics of concrete blended with 10-40% MHA as a sand substitute and 0.5-2% HH fibers by applying response surface methodology modeling and optimization. A comprehensive study involved preparing 225 concrete specimens using a mix ratio of 1:1.5:3 with a water-to-cement ratio of 0.52, followed by a 28 day curing period. It was found that a blend of 30% MHA and 1% HH fibers gave the best compressive and splitting tensile strengths at 28 days, which were 33.88 MPa and 3.47 MPa, respectively. Additionally, the incorporation of increased proportions of MHA and HH fibers led to reductions in both the dry density and workability of the concrete. In addition, utilizing analysis of variance (ANOVA), response prediction models were created and verified with a significance level of 95%. The models' R2 values ranged from 72 to 99%. The study validated multi-objective optimization, showing 1% HH fiber and 30% MHA in concrete enhances strength, reduces waste, and promotes environmental sustainability, making it recommended for construction.


Subject(s)
Construction Materials , Hair , Millets , Tensile Strength , Humans , Construction Materials/analysis , Hair/chemistry , Millets/chemistry , Materials Testing , Compressive Strength
2.
Cureus ; 15(10): e48077, 2023 Oct.
Article in English | MEDLINE | ID: mdl-38046499

ABSTRACT

In a world characterized by rapid technological evolution, the integration of quantum technologies into the realm of healthcare has emerged as a transformative force. This narrative review explores the journey of quantum innovations in medicine, delving into the fundamental principles of quantum mechanics that underpin quantum computing, sensing, and communication. From the birth of quantum theory to the advent of practical quantum applications, we journey through historical milestones that have paved the way for a quantum-powered future in healthcare. The narrative unfolds to reveal the profound implications of quantum technologies in healthcare, ranging from accelerated drug discovery and genomic analysis to secure data transmission and telemedicine. Real-world case studies illuminate successful applications, while the review addresses the ethical, societal, and regulatory considerations that accompany this quantum revolution. As we peer into the future, we contemplate the challenges that lie ahead and offer recommendations for researchers and policymakers to forge a harmonious and equitable synergy between quantum and medicine. In a world where innovation outpaces the tick of the clock, this narrative review serves as a timely guide for those poised to shape the quantum healthcare landscape, where precision and compassion converge and the possibilities are limitless.

3.
Cureus ; 15(11): e49249, 2023 Nov.
Article in English | MEDLINE | ID: mdl-38143618

ABSTRACT

The landscape of cancer treatment has witnessed a remarkable transformation in recent years, marked by the convergence of medical and surgical innovations. Historically, cancer therapy faced challenges, including limited efficacy and severe side effects. This narrative review explores the historical progression of cancer treatments, shedding light on significant breakthroughs in both medical and surgical oncology. It comprehensively addresses the medical domain, covering chemotherapy, targeted therapies, immunotherapy, hormonal treatments, and radiological procedures. Simultaneously, it delves into the surgical realm, discussing the evolution of surgical techniques, minimally invasive procedures, and the role of surgery across various stages of cancer. The article emphasizes the fusion of medical and surgical approaches, highlighting neoadjuvant and adjuvant therapies and the significance of multidisciplinary tumor boards. It also addresses innovations, challenges, and the pivotal role of patient-centered care. Furthermore, it offers insights into the future directions and forecasts in the constantly evolving field of integrated oncological care. This review provides a comprehensive understanding of the dynamic and transformative nature of cancer treatment, reflecting the unwavering commitment of the medical and surgical communities in the ongoing fight against cancer.

4.
Cureus ; 15(10): e47968, 2023 Oct.
Article in English | MEDLINE | ID: mdl-38034133

ABSTRACT

Testicular trauma can be classified aetiologically as blunt or penetrative. Bicycles and motorbikes are considered high risk for road traffic accidents accounting for 9-17% % of all blunt trauma. We present a case of assessment and management of isolated blunt testicular trauma in a tertiary care hospital. A 36-year-old gentleman presented to the accident and emergency department with testicular pain after a road traffic accident while riding a motorcycle. On arrival, he was fully conscious and denied any other injuries. On examination, he had bruising and gross swelling of the right hemiscrotum. Ultrasound of the scrotum revealed testicular rupture and emergency exploration was undertaken which confirmed the diagnosis. Testis was non-salvageable therefore orchidectomy was done. The patient had unremarkable post-operative recovery. A majority of testicular ruptures are secondary to blunt trauma mainly caused by sport-related injuries and road traffic accidents. Ultrasonography remains a non-invasive modality to investigate testicular injuries with a sensitivity of 100%. When not available in an emergency setting, scrotal exploration should be undertaken for both diagnostic and therapeutic purposes. Surgical repair done within 72 hours yields a 90% salvage rate after which the salvage rate is reduced significantly. Tumor markers should be checked in patients managed conservatively. Early assessment and diagnosis are crucial in the management of acute testicular rupture. Early intervention can salvage injured testes and an orchidectomy can be avoided.

5.
Cureus ; 15(9): e45881, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37885547

ABSTRACT

Type 2 diabetes mellitus (T2DM) and atrial fibrillation (AF) are widespread chronic conditions that profoundly impact public health. While the intricate mechanisms linking these two diseases remain incompletely understood, this review sets out to comprehensively analyze the current evidence about their pathophysiology, epidemiology, diagnosis, prognosis, and treatment. We reveal that T2DM can influence the electrical and structural properties of the atria through multiple pathways, including oxidative stress, inflammation, fibrosis, connexin remodeling, glycemic variability, and autonomic dysfunction. Moreover, it significantly influences AF's clinical course, elevating the risk of heart failure, stroke, and cardiovascular mortality. Our review also explores treatment options for individuals with T2DM and AF, encompassing antidiabetic and antiarrhythmic drugs and non-pharmacological interventions, such as cardioversion catheter ablation and direct current cardioversion. This review depicts an insight into the clinical interplay between T2DM and AF. It deepens our comprehension of the fundamental mechanisms, potential therapeutic interventions, and their implications for patient care. This comprehensive resource benefits researchers seeking to deepen their knowledge in this domain. Ultimately, our findings pave the way for more effective strategies in managing AF within the context of T2DM.

6.
J Infect Public Health ; 16(9): 1396-1402, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37480670

ABSTRACT

BACKGROUND: MMTV causes mammary tumors in mice, and it is associated with invasive and aggressive forms of breast cancer in humans. However, the underlying mechanisms are yet unknown. We aimed to determine the MMTV-like virus (MMTV-LV) association with histological types of breast cancer, nodal involvement, and metastasis. METHODS: First, 105 breast cancer biopsies and 15 disease-free biopsies were collected. Details of clinicopathological characteristics were retrieved from patients' records. The status of MMTV-LV was already known for these biopsy samples. Associations of MMTV-LV prevalence with LNM status and metastatic history were determined. Next, quantitative PCR (qPCR) was used to quantify env gene mRNA in biopsies positive for MMTV-LV. Expression of the env gene was compared against different histopathological types of mammary tumor, LNM status, and metastasis by performing Ordinary One Way ANOVA followed by Tukey's multiple comparisons test. RESULTS: MMTV-LV prevalence was found to have no significant association with LNM or metastatic history. As compared to normal control, expression of the env gene was significantly higher (>2.8 folds) in invasive samples (P-value: < 0.01). Expression was also higher (3.28 and 2.89 folds) in patient samples with LNM (P-value: 0.0006) or metastatic history (P-value: < 0.0001), respectively. CONCLUSION: We conclude that MMTV-LV prevalence is not associated with LNM status or breast cancer metastasis; samples with invasive phenotypes, nodal involvement, and metastasis exhibit significantly higher expression of the MMTV-like env gene.


Subject(s)
Breast Neoplasms , Mammary Tumor Virus, Mouse , Neoplasm Metastasis , Mammary Tumor Virus, Mouse/genetics , Breast Neoplasms/virology , Neoplasm Metastasis/pathology , Female , Animals , Mice , Prevalence , Polymerase Chain Reaction , Genes, env/genetics
7.
Front Psychol ; 13: 923874, 2022.
Article in English | MEDLINE | ID: mdl-36467215

ABSTRACT

Building upon the job demands-resources (JD-R) theory, this research offers an in-depth exploration of the mechanisms by which idiosyncratic deals (I-deals), such as personalized work arrangements, can enhance academics' psychological empowerment (PE) and hence affect their work engagement. This study's purpose was to investigate whether PE mediates the relationships between task and work responsibilities I-deals, flexibility I-deals, and work engagement among academics in higher education and whether the mediating effects are moderated by academics' internal locus of control. Using an online platform, the survey questionnaire was sent to 650 academics working in higher education. The results reveal that task and work responsibilities I-deals and flexibility I-deals, are positively associated with the academics' work engagement and that PE mediates those relationships. Additionally, the internal locus of control strengthens the positive relationship between task and work responsibilities I-deals and PE, and it enhances the indirect effect of task and work responsibilities I-deals on academics' work engagement through PE. Though, this study did not find the moderating effect of internal locus of control on the flexibility I-deals-PE relationship; however, the results indicate that internal locus of control boosts the indirect effect of flexibility I-deals on academics' work engagement through PE.

8.
Front Psychol ; 13: 924492, 2022.
Article in English | MEDLINE | ID: mdl-35846593

ABSTRACT

This study aims to examine the underlying mechanism of the relationship between perceived green human resource management (GHRM) and perceived employee green behavior (EGB). By drawing on attitude and social exchange theories, we examined green commitment (GC) as a mediator and green knowledge sharing (GKS) as a moderator of the GHRM-EGB relationship. The study employs partial least square structural equation modeling (PLS-SEM) to analyze 329 responses. Data were collected in two time lags. The empirical results confirmed that GC mediates the relationship between GHRM and EGB. However, the study results found that GKS moderated the indirect influence of GHRM on green behavior via GC. This research signifies the effect of GHRM, GKS, GC, and green behavior on organizations' sustainability and environmental management. Despite the emerging literature on the significance of green practices in organizations for environmental management, no study has examined the moderating role of GKS on the indirect effect of GHRM on green behavior via mediating role of GC. This study offers valuable insight into environmental management in organizations through green practices and green behavior.

9.
Front Psychol ; 13: 898396, 2022.
Article in English | MEDLINE | ID: mdl-36760900

ABSTRACT

The COVID-19 pandemic led to global lockdowns that severely curtailed economic activity. In this study, we set out to examine the social, economic, and environmental ramifications of the COVID-19 pandemic. This is a rare project that will have far-reaching consequences for the field. There are five sets of issues: short-term effects on oil and economic and agricultural policies, including regulations and COP26; long-term implications of monetary and fiscal intervention and investment in green agreements on future generations; prospects for further de-globalization and its effect on climate change and nature; and intergenerational environmental consequences, including debt and polling.

10.
Infect Genet Evol ; 91: 104827, 2021 07.
Article in English | MEDLINE | ID: mdl-33794352

ABSTRACT

Development and progression of breast cancer is an outcome of strong interplay between proto-oncogenes as well as environmental factors. Among proto-oncogenes, c-myc, a multifunctional transcription factor (TF), is one of the most highlighted one, whereas among environmental factors Mouse Mammary Tumor Virus (MMTV)-like virus is a widely discussed agent. Both, c-myc and MMTV-like virus, are known to individually correlate with the poor prognosis of breast cancer. However, no study has ever been reported to determine their mutual association in breast cancer patients. In this study, our aim was to quantify and compare c-myc mRNA in MMTV-like virus-positive and virus-negative-histopathological types of breast cancer. At first, biopsy samples of 105 breast cancer patients with known histopathological types were collected and screened for the presence of MMTV-like virus. To quantify mRNA level of c-myc, quantitative-Polymerase Chain Reaction (qPCR) was used. Next, c-myc expression was compared in MMTV-like virus-positive and virus-negative-histopathological types as of breast cancer. Statistical analysis was done using GraphPad Prism 7 Software. Molecular analysis revealed that 69 (65.72%) out of 105 samples were positive for MMTV-like virus. Moreover, invasive types of breast cancer exhibited increased (3-13 folds higher) expression of c-myc as compared to baseline representing normal control comprising of 15 tumor-free biopsy samples of breast cancer patients. Whereas, non-invasive types of breast cancer showed only 1-3 folds increase in the expression of c-myc as compared to normal control. Furthermore, virus-positive and virus-negative samples had different levels of c-myc mRNA. Positive status of MMTV-like virus was noticed to significantly associate with c-myc expression increasing it from 1.87-folds in virus-negative patient samples to 4.31-folds in virus-positive patient samples (p-value: <0.0001). Whereas, increase in the expression of c-myc was only 1.14-folds higher in 2 (13.33%) virus-positive-normal control samples as compared to 13 (86.67%) virus-negative-normal control samples (P-value: <0.01). In conclusion, it is suggested that presence of MMTV-like virus and over-expression of c-myc may be used as markers of invasion of breast cancer.


Subject(s)
Breast Neoplasms/virology , Gene Expression Regulation, Neoplastic , Mammary Tumor Virus, Mouse/physiology , Proto-Oncogene Proteins c-myc/genetics , Retroviridae Infections/virology , Tumor Virus Infections/virology , Adult , Aged , Female , Humans , Middle Aged , Proto-Oncogene Proteins c-myc/metabolism , Retroviridae Infections/complications
11.
Inflammopharmacology ; 28(6): 1751, 2020 Dec.
Article in English | MEDLINE | ID: mdl-32748117

ABSTRACT

Unfortunately, a section under the heading "Materials and Method" has been published with errors.

12.
Inflammopharmacology ; 28(6): 1691-1704, 2020 Dec.
Article in English | MEDLINE | ID: mdl-32385747

ABSTRACT

Chronic wounds may lead to the development of various pathological conditions such as diabetic foot ulcers and pressure sores. The current study evaluated wound healing and anti-inflammatory potentials of methanolic extract of Ephedra ciliata using series of in vivo models. Methanolic extract of Ephedra ciliata was prepared by maceration (Ec.Me). Qualitative and quantitative (HPLC) phytochemical and metal analyses were conducted to explore the chemical and metal profiles of Ec.Me. Safety profile (behavioural) and, antimicrobial, antioxidant, wound healing, anti-inflammatory and anti-angiogenic potentials of Ec.Me were evaluated using well-established in vitro and in vivo models. ELISA assay was performed to estimate the effects of Ec.Me treatment on serum levels of TNF-α. HPLC analysis identified quercetin as one of the major compounds in Ec.Me. Safety study data showed that Ec.Me was safe up to the dose of 2000 mg/kg. Antimicrobial assay data showed that Ec.Me was active against bacterial (Staphylococcus aureus) as well as fungal (Candida albicans and Aspergillus niger) strains. Ec.Me showed modertate antioxidant potential in in vitro and in vivo models. Data of excision and burn wound healing models showed that Ec.Me, promoted wound closure in a dose and time-dependent manner. Treatment with 20% Ec.Me cream and heparin showed almost the same effects with no statistical differences (p > 0.05). Ec.Me also showed time-dependent anti-inflammatory activities in both acute and chronic models. In carrageenan model, treatment with 200 mg/kg of Ec.Me showed comparable anti-inflammatory effects (p > 0.05) with quercetin and indomethacin throughout the study. In cotton pellet granuloma model treatment with 200 mg/kg of Ec.Me and indomethacin inhibited granuloma formation significantly better (p < 0.05) as compared with the rest of the treatment groups. Histopathological examination of skin samples showed marked improvement in architecture with minimal infiltration of inflammatory cells. Data of in vivo angiogenesis assay showed marked improvement in vessels length, density, branching points, total segments and total nets after treatment with Ec.Me, indicating no toxic effects towards vasculature development. Significant (p < 0.05) downregulation of TNF-α was observed in serum samples of animals treated with Ec.Me. Based on data of the current study, it is concluded that quercetin-rich extract of Ephedra ciliata has wound healing and anti-inflammatory potentials via downregulation of TNF-α. Moreover, it is suggested that the antimicrobial activity of Ec.Me prevented microbial invasion, thus promoted natural wound healing mechanisms as well.


Subject(s)
Anti-Inflammatory Agents/pharmacology , Down-Regulation/drug effects , Ephedra/chemistry , Inflammation/drug therapy , Plant Extracts/pharmacology , Tumor Necrosis Factor-alpha/metabolism , Wound Healing/drug effects , Animals , Anti-Infective Agents/pharmacology , Antioxidants/pharmacology , Aspergillus niger/drug effects , Candida albicans/drug effects , Female , Indomethacin/pharmacology , Inflammation/metabolism , Male , Methanol/chemistry , Microbial Sensitivity Tests/methods , Plant Leaves/chemistry , Quercetin/pharmacology , Rats , Skin/drug effects , Skin/metabolism , Staphylococcus aureus/drug effects
13.
Inflammopharmacology ; 28(4): 993-1008, 2020 Aug.
Article in English | MEDLINE | ID: mdl-32172496

ABSTRACT

Launaea spinosa is used as an anti-inflammatory agent traditionally. This study was conducted to evaluate anti-inflammatory and anti-angiogenic activities of methanol extract of Launaea spinosa. Extraction was performed by maceration and the resultant green coloured extract was labelled as Ls.Me. Solubility analysis showed that Ls.Me was miscible with distilled water, normal saline, ethanol and methanol. Metal analysis following acid digestion method exhibited the presence of copper, magnesium, manganese, iron, zinc and calcium. Phytochemical analysis confirmed the presence of different classes of secondary metabolites in Ls.Me. HPLC analysis showed the presence of quercetin, gallic acid, caffeic acid, benzoic acid and sinapic acid in Ls.Me. Data of in vitro antioxidant assays showed moderate antioxidant potential of Ls.Me which was also confirmed by data of in vivo enzymes (SOD, CAT, and TSP) assays. Antimicrobial assays data showed that Ls.Me was active against S.aureus and S.epidermidis (bacterial) as well as C.albicans and A.niger (fungal) strains. Data of acute physio-pathological studies showed no abnormalities in Albino rats up to the dose of 2000 mg/kg of Ls.Me. Acute and chronic inflammatory models were used to evaluate anti-inflammatory effects of Ls.Me. Data of acute studies showed that Ls.Me has the potential to arrest inflammation produced by different mediators in a dose-dependent manner. 200 mg/kg of Ls.Me was found to produce significantly (p < 0.05) better anti-inflammatory effects than 100 mg/kg of Ls.Me. Ls.Me also significantly (p < 0.05) inhibited ear edema induced by xylene. Ls.Me showed profound anti-inflammatory responses in paw edema induced by formalin and also inhibited granuloma development in cotton pellet-induced granuloma model. Histopathological and biochemical investigations showed marked reduction in the number of inflammatory cells. TNF-α and IL-6 ELSIA kits were used to study effects of Ls.Me treatment on serum levels of TNF-α and IL-6. Data obtained showed significant (p < 0.05) reduction in TNF-α and IL-6 levels in serum of animals treated with Ls.Me. Data of in vivo angiogenesis assay showed that 200 µg/ml of Ls.Me significantly halted vasculature development indicating its potent anti-angiogenic potential. On the basis of findings of the current study, it is concluded that multiple phytochemicals present in Ls.Me act synergistically to produce anti-inflammatory and anti-angiogenic effects. Further studies are required to standardize the plant extract and explore its safety profile.


Subject(s)
Angiogenesis Inhibitors/pharmacology , Anti-Inflammatory Agents/pharmacology , Asteraceae/chemistry , Plant Extracts/pharmacology , Angiogenesis Inhibitors/chemistry , Angiogenesis Inhibitors/isolation & purification , Animals , Anti-Bacterial Agents/chemistry , Anti-Bacterial Agents/pharmacology , Anti-Inflammatory Agents/chemistry , Anti-Inflammatory Agents/isolation & purification , Chick Embryo , Chromatography, High Pressure Liquid , Chromatography, Thin Layer , Edema/drug therapy , Female , Male , Methanol/chemistry , Plant Extracts/chemistry , Plant Extracts/isolation & purification , Rats
14.
Oman Med J ; 29(3): e073, 2014 May.
Article in English | MEDLINE | ID: mdl-30992739

ABSTRACT

Xeroderma pigmentosum is an uncommon inherited autosomal recessive disorder. Affected patients have a 2000-fold amplified risk of skin cancer. There is an inability to repair the damage to genetic material caused by ultraviolet light. Basal cell carcinoma is the most commonly associated carcinoma followed by squamous cell carcinoma and melanoma. It is a highly mutilating disorder where occurrence of multiple cancers and repeated surgical treatments result in serious psycho-social implications. We present a case of diagnosed xeroderma pigmentosum in a 25 year old male who presented with multiple lesions and non-healing ulcers on face. Four surgical specimens from left lower eyelid, chin, right cheek and upper lip were taken for histopathological diagnosis. Microscopic examination revealed five different tumors from biopsies of these sites - specimen from right cheek revealed two morphologically distinct tumors. The tumors include basosquamous carcinoma, nodular basal cell carcinoma, adenoid basal cell carcinoma, malignant melanoma and cavernous hemangioma.

15.
Saudi J Kidney Dis Transpl ; 19(6): 980-2, 2008 Nov.
Article in English | MEDLINE | ID: mdl-18974589

ABSTRACT

A 36 years old female with hypertension and chronic kidney disease presented with anemia, nausea, vomiting and progressively rising serum creatinine. She was found to be 16 weeks pregnant. Hemodialysis was initiated daily; however due to non compliance it remained at thrice weekly of 4 hours per session. She gained a weight during her pregnancy and labor was induced at 36 week and cesarean section performed delivering a healthy baby girl. She continues thrice weekly hemodialysis post partum.


Subject(s)
Kidney Failure, Chronic/therapy , Pregnancy Complications/therapy , Pregnancy Outcome , Adult , Creatinine/blood , Female , Humans , Kidney Failure, Chronic/blood , Pregnancy , Pregnancy Complications/blood , Saudi Arabia
SELECTION OF CITATIONS
SEARCH DETAIL
...