Cten promotes Epithelial–Mesenchymal Transition (EMT) in colorectal cancer through stabilisation of Src

Cten is an oncogene promoting EMT in many signaling pathways, namely through Snail. We investigated whether Cten function could be mediated through Src. Cten levels were modulated by forced expression in HCT116 and gene knockdown in SW620 CRC (colorectal cancer) cell lines. In all cell lines, Cten was a positive regulator of Src expression. The functional importance of Src was tested by simultaneous Cten overexpression and Src knockdown. This resulted in abrogation of Cten motility-inducing activity and reduction of colony formation ability together with failure to induce Cten targets. In SW620ΔCten reduced Src expression increased following restoration of Cten, also leading to increased cell motility and colony formation, which were lost if Src was concomitantly knocked down. By qRT-PCR we showed modulation of Cten had no effect on Src mRNA. However, a CHX pulse chase assay demonstrated stabilization of Src protein by Cten. Finally, expression of Cten and Src was tested in a series of 84 primary CRCs and there was a significant correlation between them (P = 0.001). We conclude that Src is a novel and functionally important target of the Cten signaling pathway and that Cten protein causes post-transcriptional stabilization of Src in promoting EMT and possibly metastasis in CRC

Virtopsy Controversies and Knowledge Gaps in the Middle-East and the Role of Virtopsy During the Present COVID-19 Pandemic

The present review will discuss gaps in the current state of knowledge about virtopsy in the Middle East and its practical application during the covid-19 Pandemic. Published literature in different journals with strict inclusion and exclusion criteria was extensively reviewed using PubMed search engine to elucidate applications and implications of the virtual autopsy. The present review is based upon literature survey covering a period of 17 months (June 2019 – October 2021) using the key words “Forensic Science, Virtopsy, Middle East, Radiology, Post-Mortem, Covid-19, Covid-19 pandemic”. Studies using virtopsy in the Middle East are minimal and confined to four countries: Israel (56%) followed by Turkey (27%), Iran (9%) and UAE (5%). In terms of radiological modalities applied in virtopsy in the Middle East, computerized tomography (CT) was used the most (52%), followed by X-ray (38%), ultrasound (5%) and MRI (5%). The application of virtopsy in the postmortem investigations during the current Covid-19 pandemic was documented in four reports originating from a total of 32 corona-associated deaths. Of these 32 deceased, virtopsy alone was used in 19 deceased, while 13 deceased cases were examined by traditional autopsy combined with virtopsy. The mean age of the deceased was 68 (33-94) years. There were 69% males and 31% females. In combination with traditional autopsy, virtopsy can be very effective in identifying the cause, mode, and the state of health a person was in before he died. However, virtopsy alone is shown to be less sensitive than traditional autopsy and, therefore, requires further research to replace traditional autopsy. It is hoped that the present paper will elucidate further the practical significance of virtopsy in the Middle East

Highly sensitive and selective detection of Bis-phenol A based on hydroxyapatite decorated reduced graphene oxide nanocomposites

A facile and cost effective chemical reduction method is employed for the preparation of reduced graphene oxide/hydroxyapatite (rGO/HAp) nanocomposites. The transmission electron microscopy images revealed that the HAp flakes are well decorated on the surface of rGO. The morphological structure of the as-synthesized rGO/HAp nanocomposites was confirmed through X-ray diffraction, Fourier transform infrared spectroscopy and Raman spectroscopy, while the composition and thermal stability were analyzed by energy dispersive spectra and thermogravimetric analysis, respectively. Furthermore, the effect of rGO/HAp nanocomposites for the proliferation of Human Mesenchymal Stem Cell (hMSC) was performed to confirm the biocompatibility. A selective chemical sensor based on rGO/HAp modified glassy carbon electrode (GCE) for sensitive detection of Bis-phenol A (BPA) has been developed. Several important parameters controlling the performance of the BPA chemi-sensor were investigated and optimized at room conditions. The rGO/HAp/Nafion/GCE sensor offers a fast response and highly sensitive BPA detection. Under the optimal conditions, a linear range from 0.2 nmol L−1 to 2.0 mmol L−1 for the detection of BPA was observed with the detection limit of 60.0 pmol L−1 (signal-to-noise ratio, at an SNR of 3) and sensitivity of 18.98 × 104 μA.L/μmol.m2. Meanwhile, the fabricated chemi-sensor showed an excellent, specific and selective recognition to target BPA molecules among coexistence of other analytes in the buffer system. This novel effort initiated a well-organized way of efficient rGO/HAp/Nafion/GCE sensor development and practically analyzed the real hazardous environmental pollutants at room conditions. © 2017 Elsevier Ltd

Biofabrication of zinc oxide nanoparticles from Melia azedarach and its potential in controlling soybean seed-borne phytopathogenic fungi

Present study, report the biofabrication of zinc oxide nanoparticles from aqueous leaf extract of Melia azedarach (MaZnO-NPs) through solution combustion method and their novel application in preventing the growth of seed-borne fungal pathogens of soybean (Cladosporium cladosporioides and Fusarium oxysporum). The standard blotter method was employed to isolate fungi and was identified through molecular techniques. The characterization of MaZnO-NPs was carried out by UV-Vis spectroscopy, Fourier Transform Infrared Spectroscopy (FT-IR), X-Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) equipped with Energy Dispersive Spectroscopy (EDS) and Transmission Electron Microscopy (TEM). The physicochemical characterization confirmed the particles were of high purity and nano size (30-40 nm) with a hexagonal shape. The synthesized MaZnO-NPs inhibited the growth of C. cladosporioides and F. oxysporum in a dose dependent manner. Biomass, ergosterol, lipid peroxidation, intracellular reactive oxygen species and membrane integrity determination upon MaZnO-NPs treatment offered significant activities there by confirming the mechanism of action against the test pathogens. In conclusion, due to the effectiveness of MaZnO-NPs in controlling the growth of C. cladosporioides and F. oxysporum, the synthesized MaZnO-NPs provides insight towards their potential application in agriculture and food industries. (C) 2020 The Author(s). Published by Elsevier B.V. on behalf of King Saud University. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Knowledge and attitude regarding child abuse among primary health care physician in Abha, Saudi Arabia, 2018

Backgrounds: Child abuse or child maltreatment is physical, sexual, or psychological maltreatment or neglect of a child or children, especially by a parent or other caregiver. Child abuse may include any act or failure to act by a parent or other caregiver that results in actual or potential harm to a child, and can occur in a child's home or in the organizations, schools, or communities the child interacts with. This study was conducted to assess the primary health care (PHC) centers' physicians' knowledge and attitude toward child abuse including its types, and child neglect with their behavior regarding reporting of abuse cases. Methods: A cross-sectional study was conducted in Abha which is the capital of Aseer Province, including all PHC physicians (about 475) working in PHC centers. Data regarding physicians' demographic characteristics, perception, and awareness regarding child abuse and neglect were collected by self-administrative questionnaire in the PHC center during their time between patients' consultation. Results: The study included 300 PHC physicians whose ages ranged from 25 to 50 years old with mean age of 28 years. About 65% of the physicians were males and 69% of them were married with about 73% having at least one child. Overall, 96.3% of the physicians recorded good awareness level regarding types of child abuse and 97.3% recorded good awareness level regarding child neglect patterns. Underreporting of child abuse cases was recorded by about 64% of physicians. Conclusion: Regarding child abuse and neglect, PHC physicians have good knowledge, optimal attitude, and positive perception. There was also the problem of underreporting of suspected child abuse cases among PHC physicians in Saudi Arabia, with many barriers to report, such as community traditions; unclear reporting strategy was identified

The Level of Burden among Caregivers of Patients with Alzheimer’s Disease in Saudi Arabia

Background: Caregiver burden is a serious global issue associated with the growing number of older adult patients with Alzheimer’s disease (AD). AD patients become more dependent on their caregivers and require assistance with basic daily life activities. This study aims to measure the caregiver burden of informal caregivers of AD patients and to determine their characteristics. In addition, it intends to understand caregiver coping techniques and assess their medication knowledge. Methods: This was a cross-sectional study including 148 informal caregivers mainly recruited by the Saudi Alzheimer’s Disease Association (SADA). A four-part study questionnaire was used for data collection in the Arabic Language and included the following: socio-demographic characteristics of AD patients and their caregivers, the 12-item version of the Zarit Burden Interview (ZBI), and adapted questions on coping techniques and medication knowledge. Results: A total of 148 caregivers (62% were female) participated in this study, and 79.06% were between 30 and 60 years old. The ZBI average score was 27, indicating a moderate to high burden. Caregivers reported their need for services to improve their quality of life. The medication knowledge was insufficient in most aspects except that more than half were aware of medications’ side effects. Conclusion: Our study revealed that the average burden among informal caregivers of AD patients was moderate–high

Plasma ghrelin and leptin in patients with inflammatory bowel disease and its association with nutritional status

Background/Aims: Ghrelin and leptin are thought to play a role in the loss of appetite in active inflammatory bowel disease (IBD). This study seeks to probe into the association of these markers with regards to IBD and the nutritional status of these patients. A case-control study was conducted between May 2015 and March 2016 at King Khalid University Hospital (KKUH). Thirty-one patients with IBD (both active and non-active) and forty-one healthy controls (both non-fasting and fasting) were recruited. Patients and Methods: Plasma ghrelin and leptin levels were determined using an enzyme immunoassay (EIA) technique. The nutritional status was determined through the standardized Mini-Nutritional Assessment (MNA) questionnaire. Results: The difference in the plasma ghrelin between active (263.7 pg/mL) and non-active (108 pg/mL) cases was significant (P= 0.02). The difference in mean plasma leptin level between active cases (229.4 pg/mL) vs. non-active cases (359.7 pg/mL) was insignificant (P= 0.4). In fasting (2028.6 pg/mL) and non-fasting controls (438.8 pg/mL), the mean plasma ghrelin values was significantly different (P< 0.01). In contrast, the plasma leptin level difference between fasting (727.3 pg/mL) and non-fasting (577 pg/mL) controls was insignificant (P= 0.14). There is a statistically significant association in mean ghrelin levels between the case group and the control group (P< 0.01). With regards to nutritional status, the mean MNA score of active cases compared to fasting controls was 18.8 ± 5 vs. 20.8 ± 3.8, respectively (P< 0.01) Conclusion: Ghrelin levels were lower in the active IBD cases compared to the inactive ones, signifying an underlying pathology as etiology to this phenomenon. Furthermore, ghrelin levels were significantly lower in both case groups compared to the controls. These findings, along with the disparity in the MNA scores, insinuate a possible link between hormone levels and the loss of appetite from which these patients suffer

Sleep patterns and predictors of poor sleep quality among Saudi commission residents in the Aseer region, Saudi Arabia before and during covid-19 pandemic

Background: Sleep is an essential part of human physiology. Being a basic need for human well-being, adequate sleep is associated with good health and life quality for all individuals. Disorders of sleep may result in significant derangement in human functionality. Sleepiness among physicians affects not only their personal lives but also negatively impacts the lives of their patients. Method: This is an analytic cross-sectional study design conducted among 268 male and female Saudi commission residents working in public healthcare facilities in the Aseer region, Saudi Arabia. The study aimed to assess sleep patterns and determine predictors of poor sleep quality among Saudi commission residents of the Aseer region, Saudi Arabia. Result: The study reported that before COVID 19 pandemic, 85.1% of Saudi commission residents had poor sleep quality; however, during the pandemic, the percentage increased to 92.5% who showed poor sleep quality. Also, we found there was a significant association between different self-reported morbidities among Saudi commission residents and sleep disturbance (p < 0.05). Conclusion: The study revealed that the percentage of the Saudi commission residents had poor sleep quality during pandemic higher than before with significant difference, which indicates the relation between COVID 19 pandemic and sleeps quality among Saudi commission residents