Optimization of chemiluminescent detection of mitochondrial RNA-protein interaction by nonradioactive mobility shift

RNA mobility shift is one among many procedures used to study RNA-protein interaction. Yet, there are some limitations for the radioactive RNA mobility shift including; 1) the risk of using radiolabeled nucleotides, 2) the long time to get the results; this could range from days to weeks, and 3) its high cost as compared to nonradioactive techniques. In this study, we optimized a nonradioactive procedure using dig-11-UTP nucleotide and chemiluminescent detection for mitochondrial RNA-protein interaction. The optimizations include the quality limiting steps such as using non-specific competitors of RNA probe, UVcross linking time, electrotransfer to membranes, application with various protein extracts, and the examination for false positive RNA-protein complexes using proteinase K digestion. The results show that the optimizations carried out in the study significantly enhanced the quality of the results obtained with this procedure.Keywords: RNA mobility shift, mitochondria, wheat, RNA-protein interaction, chemiluminescent detection, nonradioactiveAfrican Journal of Biotechnology Vol. 12(16), pp. 1915-192

Expression of cyclin D1 in oral squamous cell carcinoma

Background: Cyclin D1 expression regulates normal cell cycle. Its deregulation or overexpression may cause disruption in the normal cell cycle control and lead to cancer progression. In this study, we aimed to study the expression of cyclin D1 in oral squamous cell carcinoma (OSCC) and find its association with the different grades of oral tumors, if any.Methods: This cross-sectional study included 40 formalin-fixed paraffin-embedded tissue blocks specimens of OSCC with variable grades. The expression of cyclin D1 was evaluated through immunohistochemical (IHC) staining.Results: A total of 40 (9 female and 31 male) samples were included, with a maleto-female ratio of 3.4:1. The age ranged between 25 and 90 years with an average age of 65.5 years. Twenty-five (62.5%) samples were diagnosed as well-differentiated squamous cell carcinoma (WDSCC) and fifteen (37.5%) as poorly differentiated squamous cell carcinoma (PDSCC). No cases of moderately differentiated squamous carcinoma were included in the study. The expression of cyclin D1 was detected in the cases of WDSCC and a lesser expression was seen in the PDSCC with a P-value of 0.0003, OR 1581 and 95% CI (29.8239 to 83810.7113).Conclusion: Cyclin D1 is expressed in OSCC and stronger expression was detected in WDSCC

Hydrographical conditions and benthic assemblages in the Suez Gulf, Egypt

The coastal development and human activities along the Suez Gulf leading to sedimentation, degrade the quality of water, disturbing the natural structure and functions of aquatic communities. The Suez Gulf is a large semi-closed area with a 346 km long coastline on the western beach side. The prevailing physicochemical parameters in shallow intertidal waters were measured seasonally over the year. Benthic faunas in the sampling sites were studied indicating their regional distribution in relation to the impact of different environmental parameters in the intertidal region. The concentration of copper in seawater reached high level at St. IV (4.57 ug/1), which is exposed to sewage and petroleum hydrocarbons. The grain size of the sediment is a determining factor for the organic carbon concentration and the sandy substrate enhances organic matter degradation processes. A large number of oil fields are present along the western coast of the Suez Gulf, therefore, cadmium and organic matter appeared to be high. The values of pH did not vary greatly among the different sampling sites. It was high at EI-Ein, El-Sukhna and Ras-Shukeir due to the disposal of mainly acidic sewage and industrial effluents of the two stations Adabiya and Ras-Gharib respectively. The macrobenthos included 71 species embraced mainly from Mollusca (53.5% Gastropoda and 12.7% Bivalvia) and the other invertebrates included 7 groups namely, Rhizostoma, Polychaeta, Cirripedia, Amphipoda, Isopoda, Decapoda and Echinodermata. The distribution of benthos is affected by the temperature and salinity of seawater. The concentration of organic matter in seawater and in sediments in shallow waters shows high values in the central part of the Gulf of Suez

Effects of irregular antenatal care attendance in primiparas on the perinatal outcomes: a cross sectional study

Aim: Antenatal care (ANC) is a key strategy for reducing maternal and neonatal morbidity and mortality rates because adequate utilization of antenatal health care services is associated with improved maternal and neonatal health outcomes. The current study aims to identify the factors causing lack of regular attendance at ANC clinics in primiparas and to determine the effects of lack of antenatal care on perinatal outcomes. Methods: A cross sectional study was carried out at Assiut Women\u27s Health Hospital, Egypt between October 2015 and September 2016. Estimated sample size of 516 primiparous women were divided into two groups according to number of attendance to ANC clinics; women who came four visits or more were considered regular and those who came to less than four visits were considered irregular. Data was collected via a structured interview questionnaire that included personal data, obstetrical, data about current pregnancy and labor. The researcher interviewed the women within 24 hours postpartum. Results: The majority of the study sample (74.8%) had regular ANC visits while only (25.2%) had \u3c4 antenatal visits. Financial problems (44.6%) or lack of awareness about the importance of ANC (20%) were the most common reasons for irregular ANC visits. The incidence of preeclampsia and eclampsia is significantly higher in the irregular attendants (p=0.000). Similarly, preterm birth, stillbirth and low birth weight were significantly more common among irregular attendants (p=0000). Conclusion: Women with irregular antenatal care attendance are much more prone to pregnancy complications such as preeclampsia, eclampsia and anemia besides higher adverse birth outcomes including preterm birth, low birth weight and stillbirth

Impacts of environmental conditions on macrobenthic distribution along the Suez Gulf, Egypt

Increases in coastal development and human activities leading to sedimentation degrade the quality of water; disturb the natural structure and functions of aquatic communities. The Suez Gulf is a large semi-closed area (~625 km long coastline).The assemblages of bottom fauna were studied qualitatively and quantitatively in the shallow intertidal waters along the western coast of the Suez Gulf. The quality of seawater and sediment structures were analyzed. The distribution of macro-benthos included a total of 38 species of Gastropoda and 9 Bivalvia; and 25 species from the other invertebrates included 7 groups namely, Rhizostoma, Polychaeta, Cirripedia, Amphipoda, Isopoda, Decapoda and Echinodermata. The most dominant group among invertebrate groups was the Polychaeta which included 4 species: Hydroides elegans, Perinereis cultilifera, Perinereis nuntia and Ophelina acuminata. The Cirripedia were represented by 3 species namely, Balanus amphitrite, Chithamalus challengeri and Tetraclita squamosa. The variations in the numerical abundance and biomass of bottom fauna studied between the observation periods and at sampling sites. There was a marked increase in benthos biomass at St. IV (Ras Gharib) yielding an average of 318.8 g/m² in which the gastropod community represented the dominant species in collected samples reaching 270.28 g/m² (84.4% of the total biomass) and numerically numbered 116 ind./m². Veliger larvae of bivalves and gastropods appeared to be present in the plankton for long periods and their production seems to be continuous throughout the year. In the intertidal zone of the Suez Gulf, the values of pH varied within narrow limits. Water temperature and salinity seemed to be important in the distribution and abundance of the macro-benthos communities in the study areas. The organic content in shallow intertidal waters and sediments indicated high values in the central part of the Gulf of Suez

Evidence-Based Medicine; Climbing a Mountain for a Better Decision-Making

Evidence-Based Medicine is a relatively new term used in medical sittings and Health Information Technology (HIT). It is a form of medicine that integrates practitioners’ expertise with the best available practical evidences to improve better patient care. Evidence-Based Medicine has increasingly been used and incorporated into daily medical practices to overcome the shortcomings in the conventional standard care. The purpose of this literature review is to highlight the importance of Evidence-Based Medicine and how it can act as a crucial tool in decision-making to empower the quality of medical services for better patient outcomes

Water Treatment and Desalination

Water covers a large area of the earth that reaches about three quarters of the surface of this planet, but we cannot say that all of this water is fresh or drinkable; according to many statistics, the percentage of fresh water reaches about 1% of the total water on earth. But with the great need for fresh water, whether for drinking or other purposes such as agriculture, the search for water treatment methods has become much larger. One of the most important of these methods that have been developed is desalination of seawater using desalination plants; therefore, we will address here the most important methods used in desalination and water treatment

Investigation of in-plane moment connections of I-beams to square concrete-filled steel tube columns under gravity loads

AbstractThis paper focuses on experimental and analytical behavior of the ultimate moment of the connections of steel I-beams to square concrete-filled steel tube columns. External stiffeners around the columns are used at the beam flange levels. Five specimens are tested monotonically. The test parameters are the column stiffener dimensions and filling the steel tube column with concrete. Two types of failure modes are observed; beam flange failure and stiffener failure. The experimental results show that the ultimate moment of the connection is increased by increasing stiffener’s dimensions and filling the steel tube column with concrete. ANSYS finite element program is used to simulate the behavior, taking into account both geometric and material nonlinearities. Analytical results that are in fair agreement with the experimental ones are then used to discuss the influence of the main geometric parameters on the connection behavior. The parameters are the stiffener and column dimensions as well as filling the steel tube column with concrete. Different square column cross sections are chosen to cover the three classes of section classifications according to Egyptian code of practice, which are: compact, non compact or slender. The increase in the ultimate moment of the connections is based upon both column cross sections’ compactness and stiffener dimensions while the maximum advantages occur with slender columns

Effect of postharvest exogenous edible coating treatments on inhibitor browning and maintaining quality of fresh mushroom

The shelf-life of fresh mushrooms is limited to 1-3 days at ambient conditions and antioxidant characters are reduced and acquire a brown colour during post-harvest storage. Therefore, the present study was conducted to investigate the effect of some postharvest exogenous edible coating treatments of immersed in six different solutions for 5 min of calcium chloride (2%, 4%), chitosan (1%, 2%), CMC (1%, 2%) and control (distilled water) on reducing the browning, microbial load and maintaining quality during storage for 15 days at 4 ± 1 °C and 95% RH, during two successive seasons of 2021 and 2022 in 4th and 6th of January in the first and second seasons respectively. The obtained results revealed that dipping mushroom plants in a solution of chitosan 2% or calcium chloride 4% was the best treatment for reducing weight loss, while chitosan 2% for 5 min was the most effective treatment in reducing browning, PPO activity, total phenolic, flavonoids contents and inhibiting microbial counts for 12 days at 4 ± 1 °C and 95% RH

Workplace Psychosocial Factors and Mental Health among a Sample of Expatriates and the Country’s Nationals Who Working at King Khalid University, Saudi Arabia

Worplace stress is the harmful physical and emotional response that occurs when there is a poor match between job demands and the capabilities, resources, or needs of the worker. Mental health is an important issue in the workplace, particularly in developing countries. This study was aimed to explore the workplace psychosocial factors and mental health among expatriates and the country’s nationals; examine the relationship between workplace psychosocial factors and mental health. . The sample was composed of 518 country's nationals and 554 expatriates teaching staff on job at King Khalid University. Two tools were used for data collection: Socio-demographic data sheet, and Copenhagen Psychosocial Questionnaire (COPSOQ). The study results indicated that Poor mental health had a strongly statistically significant positive correlation with “quantitative  demands”,” Work-family conflict”, and “Emotional demands “ in total country’s nationals and expatriates   (p<0.01). While it was a strongly statistically significant negative  correlation with “Work pace”, “Influence at work”, “Social support from colleague”, “Social support from supervisors”, “Meaning of work”, “Commitment to the workplace” “Predictability”, and  “Recognition” (p<0.01). It was concluded that country's nationals experience worse mental health than expatriates and  this  to some extent caused by exposure to psychosocial factors at work. It has indicated the importance of taking action to reduce psychosocial factors, as this would benefit both country’s nationals and expatriate workers. Key words: Expatriates , country's nationals , workplace psychosocial factors, mental health