Resonant X-ray excitation of the nuclear clock isomer 45Sc.

Resonant oscillators with stable frequencies and large quality factors help us to keep track of time with high precision. Examples range from quartz crystal oscillators in wristwatches to atomic oscillators in atomic clocks, which are, at present, our most precise time measurement devices1. The search for more stable and convenient reference oscillators is continuing2-6. Nuclear oscillators are better than atomic oscillators because of their naturally higher quality factors and higher resilience against external perturbations7-9. One of the most promising cases is an ultra-narrow nuclear resonance transition in 45Sc between the ground state and the 12.4-keV isomeric state with a long lifetime of 0.47 s (ref. 10). The scientific potential of 45Sc was realized long ago, but applications require 45Sc resonant excitation, which in turn requires accelerator-driven, high-brightness X-ray sources11 that have become available only recently. Here we report on resonant X-ray excitation of the 45Sc isomeric state by irradiation of Sc-metal foil with 12.4-keV photon pulses from a state-of-the-art X-ray free-electron laser and subsequent detection of nuclear decay products. Simultaneously, the transition energy was determined as [Formula: see text] with an uncertainty that is two orders of magnitude smaller than the previously known values. These advancements enable the application of this isomer in extreme metrology, nuclear clock technology, ultra-high-precision spectroscopy and similar applications.

Efficacy of Repeated Low-Level Red Light (RLRL) therapy on myopia outcomes in children: a systematic review and meta-analysis.

BACKGROUND: Myopia is the most prevalent form of refractive error that has a major negative impact on visual function and causes blurring of vision. We aimed to determine if Repeated Low-Level Red Light (RLRL) treatment is beneficial in treating childhood myopia in terms of axial length (AL), spherical equivalent refraction (SER), and sub foveal choroidal thickness (SFCT). METHODS: This systematic review was performed on RLRL for treatment of myopia in children compared to single vision spectacles (SVS). We employed the search strategy with key terms myopia and low-level light therapy then we searched PubMed, Scopus, Cochrane, and Web of Science databases. The mean differences (MD) were used to evaluate the treatment effects. Heterogeneity was quantified using I2 statistics and explored by sensitivity analysis. RESULTS: Five randomized controlled trials (RCTs) were included in our meta-analysis with a total of 833 patients, 407 in treatment group and 426 in control group. At a 3 month follow up period, pooled studies show a statistical difference in AL between RLRL and SVS group (MD = -0.16; 95% CI [-0.19, -0.12], SER (MD = 0.33; 95% CI [0.27, 0.38]), and SFCT (MD = 43.65; 95% CI [23.72, 45.58]). At a 6 month follow up period, pooled studies show a statistical difference in AL between RLRL and SVS group (MD = -0.21; 95% CI [-0.28, -0.15]), SER (MD = 0.46; 95% CI [0.26, 0.65]), and SFCT (MD = 25.07; 95% CI [18.18, 31.95]). At a 12 month follow up period, pooled studies show a statistical difference in AL between RLRL and SVS group (MD = -0.31; 95% CI [-0.42, -0.19]) and SER (MD = 0.63; 95% CI [0.52, 0.73]). CONCLUSION: This is the first systematic review and meta-analysis investigating only RCTs evidence supporting the efficacy of 650 nm RLRL for myopia control in the short term of 3, 6, and 12 months follow up. The present review revealed the clinical significance of RLRL as a new alternative treatment for myopia control with good user acceptability and no documented functional or structural damage. However, the effect of long-term RLRL treatment and the rebound effect after cessation require further investigations.

Nanocurcumin: A Promising Therapeutic Candidate for Experimental Trichinellosis.

In our pursuit of an alternative drug against Trichinella spiralis, we assessed the effectiveness of nanocurcumin in alleviating pathogenesis, parasitological factors, MMP-9 levels, and its expression in the enteral and parenteral phases of infection. The nanocurcumin particles, with a spherical shape and a size of 100 ± 20 nm, were used in the study. Eighty mice were divided into four groups: the control group, the untreated infected group, the nanocurcumin-treated group, and the albendazole-treated group. The nanocurcumin-treated group exhibited a statistically significant increase in the percentage of lymphocytes, along with a reduction in neutrophils, monocytes, and eosinophils compared to the untreated, infected group. Both the nanocurcumin (87.2 and 97.3%) and the albendazole-treated groups (99.8 and 98.2%) showed a significant reduction in the mean number of intestinal worms and encysted larvae, respectively. The treated groups exhibited normal intestinal villi, suppression of the inflammatory process, and fewer instances of degenerated larvae in the diaphragm and muscle compared to the untreated, infected group. Immunohistochemistry and ELISA analyses revealed a significant downregulation of MMP-9 levels in the intestines and muscles of the treated groups. Our data demonstrate that nanocurcumin contains highly versatile molecules capable of modulating biological activity against inflammation and its pathway markers.

Arabidopsis root apical meristem survival during waterlogging is determined by phytoglobin through nitric oxide and auxin.

MAIN CONCLUSION: Over-expression of phytoglobin mitigates the degradation of the root apical meristem (RAM) caused by waterlogging through changes in nitric oxide and auxin distribution at the root tip. Plant performance to waterlogging is ameliorated by the over-expression of the Arabidopsis Phytoglobin 1 (Pgb1) which also contributes to the maintenance of a functional RAM. Hypoxia induces accumulation of ROS and damage in roots of wild type plants; these events were preceded by the exhaustion of the RAM resulting from the loss of functionality of the WOX5-expressing quiescent cells (QCs). These phenotypic deviations were exacerbated by suppression of Pgb1 and attenuated when the same gene was up-regulated. Genetic and pharmacological studies demonstrated that degradation of the RAM in hypoxic roots is attributed to a reduction in the auxin maximum at the root tip, necessary for the specification of the QC. This reduction was primarily caused by alterations in PIN-mediated auxin flow but not auxin synthesis. The expression and localization patterns of several PINs, including PIN1, 2, 3 and 4, facilitating the basipetal translocation of auxin and its distribution at the root tip, were altered in hypoxic WT and Pgb1-suppressing roots but mostly unchanged in those over-expressing Pgb1. Disruption of PIN1 and PIN2 signal in hypoxic roots suppressing Pgb1 initiated in the transition zone at 12 h and was specifically associated to the absence of Pgb1 protein in the same region. Exogenous auxin restored a functional RAM, while inhibition of the directional auxin flow exacerbated the degradation of the RAM. The regulation of root behavior by Pgb1 was mediated by nitric oxide (NO) in a model consistent with the recognized function of Pgbs as NO scavengers. Collectively, this study contributes to our understanding of the role of Pgbs in preserving root meristem function and QC niche during conditions of stress, and suggests that the root transition zone is most vulnerable to hypoxia.

A multicentric and nationwide predictive study role of T cell sub-population in the prevalence and prognosis of cryoglobulinemia among genotype 4 chronic hepatitis C patients.

The infection caused by the hepatitis C virus (HCV) is a significant global health concern. The prevailing genotype of HCV in Egypt is 4a, commonly referred to as GT-4a. A significant proportion exceeding 50% of patients infected with HCV experience extrahepatic manifestations (EHMs), encompassing a diverse range of clinical presentations. These manifestations, including essential mixed cryoglobulinemia (MC), can serve as initial and solitary indicators of the disease. The complete understanding of the pathogenesis of EHM remains unclear, with autoimmune phenomena being recognized as the primary causative factor. In this study, we examined the predictive significance of T-cell subpopulations in relation to the occurrence and prognosis of cryoglobulinemia in HCV patients. A total of 450 CHC genotype four treatment naïve patients were enrolled in this analytic cross-sectional study after thorough clinical, laboratory, and radiological examinations. All patients underwent laboratory investigations, including testing for cryoglobulin antibodies and measurements of CD4 and CD8 levels; two groups were described according to their test results: Group 1 consists of patients who have tested positive for cryoglobulin antibodies and Group 2 consists of patients who have tested negative for cryoglobulin antibodies. The exclusion criteria encompassed individuals with HIV infection or chronic HBV infection. Additionally, pelvi-abdominal ultrasonography was performed. Our study included 450 treatment naïve CHC patients (59% male, mean age 50.8 years). The patients were categorized according to their cryoglobulin antibodys test results into two groups: group A, CHC patients with cryoglobulin antibodies (Abs) negative (364 patients), and group B, CHC patients with cryoglobulin Ab positive (86 patients). Group B demonstrated a higher average age, elevated international normalized ratio, more prolonged duration of HCV infection, lower albumin, higher alanine aminotransferase, higher aspartate aminotransferase, higher bilirubin, lower CD8, lower CD4, and lower CD4:CD8 ratio. In contrast, 27 out of 86 (31.40%) patients in group B had symptoms; 85.8% had purpura and arthralgia, 74.3% had paresthesias, 86.7% had weakness, and 12.2% had non-Hodgkin's lymphoma. The levels of CD4 and CD8 were found to be decreased in chronic HCV patients with MC. T-cell subpopulation serves as a reliable indicator for assessing the prevalence and prognosis of MC in individuals with genotype 4 chronic hepatitis C. However, additional research is needed to further understand the development and spread of various emerging infectious diseases. Nevertheless, it is noteworthy that a critical threshold may exist beyond which EHM reaches a point of no return.

Pregnancy outcomes among Egyptian women with systemic lupus erythematosus: A prospective cohort study.

Pregnant patients with systemic lupus erythematosus (SLE) represent a high-risk group. The aim of this study is to describe the pregnancy outcomes among SLE patients who were followed prospectively at a conjoint high-risk pregnancy/rheumatology clinic from 2007 to 2021 and to identify predictors of adverse maternal and fetal outcomes. This study included 201 singleton pregnancies of 123 women with SLE. Their mean age was 27.16 ± 4.80 years, and their mean disease duration was 7.35 ± 5.46 years. Secondary antiphospholipid syndrome (APS) was diagnosed in 77 (38.3%) pregnancies. The pregnancy was planned in 104 (51.7%) pregnancies. Flares occurred in 83 (41.3%) and pre-eclampsia in 15 (7.5%) pregnancies. Full-term pregnancy occurred in 93 (46.3%), fetal loss (miscarriage and intra-uterine fetal death) in 41 (20.4%), and prematurity in 67 (33.3%) of the pregnancies, respectively. Seven neonates died from complications of prematurity, and another one died from cardiac congenital anomalies. In the multivariate analyses, unplanned pregnancy was associated with eight times higher risk of disease flare OR = 7.92 (p < 0.001), lupus nephritis flare during pregnancy increased the odds of pre-eclampsia occurrence four times OR = 3.98 (p = 0.02), while disease flares during pregnancy predicted prematurity OR = 2.49, p = 0.049. Patients with secondary APS had three times increased risk of fetal loss OR = 2.97, p = 0.049. To conclude, unplanned pregnancy, disease flares, and APS have been identified as predictors for adverse maternal and/or fetal outcomes. Pregnancy planning is necessary to reduce maternal and fetal complications.

Effect of pulmonary rehabilitation programme including either O2 inhalation or noninvasive ventilation in patients with chronic obstructive pulmonary disease.

Background: Pulmonary rehabilitation (PR) is crucial in managing chronic obstructive pulmonary disease (COPD) and enhancing functional capacity and health status. Oxygen therapy and noninvasive ventilation (NIV) may be needed to be incorporated into rehabilitation to augment the effectiveness of physical training. Objectives: To compare and assess the impact of the PR programme alone and with augmentation with O2 or NIV on COPD patients. Methods: Seventy-five COPD patients were equally divided into three groups: group 1 patients performed 8 week-PR programme only. Group 2 performed the PR programme while receiving O2. Group 3 completed the PR programme plus NIV. Modified Borg scale, VO2 max, modified Medical Research Council Dyspnea Scale, 6-minute walk test, COPD assessment test score, spirometric measures and arterial blood gases were assessed before and after the programme. Results: The outcome measurements showed meaningful improvement compared with the baseline in the three studied groups. However, VO2 max in group 3 showed higher significant improvement than both groups 1 and 2. Regarding 6-minute walk test, groups 2 and 3 had a higher significant improvement than group 1. COPD assessment test score in group 3 showed higher significant improvement than groups 1 and 2. Arterial blood gases in groups 2 and 3 showed significant increase in partial pressure of arterial oxygen and arterial oxygen saturation, but group 3 only had a significant decrease in PaCO2. Conclusion: O2 supplementation and NIV help severe to very severe COPD patients to perform higher exercise intensity, so they augment the benefits of PR.

Effect of Ventilation Strategy During Cardiopulmonary Bypass on Arterial Oxygenation and Postoperative Pulmonary Complications After Pediatric Cardiac Surgery: A Randomized Controlled Study.

OBJECTIVES: To compare the effects of 3 ventilation strategies during cardiopulmonary bypass (CPB) on arterial oxygenation and postoperative pulmonary complications (PPCs). DESIGN: A prospective, randomized, controlled study. SETTING: A single-center tertiary teaching hospital. PARTICIPANTS: One hundred twenty pediatric patients undergoing elective repair of congenital acyanotic heart diseases with CPB. INTERVENTIONS: Patients were assigned randomly into 3 groups according to ventilation strategy during CPB as follows: (1) no mechanical ventilation (NOV), (2) continuous positive airway pressure (CPAP) of 5 cmH2O, (3) low tidal volume (LTV), pressure controlled ventilation (PCV), respiratory rate (RR) 20-to-30/min, and peak inspiratory pressure adjusted to keep tidal volume (Vt) 2 mL/kg. MEASUREMENTS AND MAIN RESULTS: The PaO2/fraction of inspired oxygen (FIO2) ratio and PaO2 were higher in the 5 minutes postbypass period in the LTV group but were nonsignificant. The PaO2/FIO2 ratio and PaO2 were significant after chest closure and 1 hour after arrival to the intensive care unit with a higher PaO2/FIO2 ratio and PaO2 in the LTV group. Regarding the oxygenation index, the LTV group was superior to the NOV group at the 3 time points, with lower values in the LTV group. There were no significant differences in the predictive indices among the 3 groups, including the extubation time, and postoperative intensive care unit stays days. The incidence of PPCs did not significantly differ among the 3 groups. CONCLUSIONS: Maintaining ventilation during CPB was associated with better oxygenation and did not reduce the incidence of PPCs in pediatric patients undergoing cardiac surgery.

Phytoglobin Expression Alters the Na+/K+ Balance and Antioxidant Responses in Soybean Plants Exposed to Na2SO4.

Soybean (Glycine max) is an economically important crop which is very susceptible to salt stress. Tolerance to Na2SO4 stress was evaluated in soybean plants overexpressing or suppressing the phytoglobin GmPgb1. Salt stress depressed several gas exchange parameters, including the photosynthetic rate, caused leaf damage, and reduced the water content and dry weights. Lower expression of respiratory burst oxidase homologs (RBOHB and D), as well as enhanced antioxidant activity, resulting from GmPgb1 overexpression, limited ROS-induced damage in salt-stressed leaf tissue. The leaves also exhibited higher activities of the H2O2-quenching enzymes, catalase (CAT) and ascorbate peroxidase (APX), as well as enhanced levels of ascorbic acid. Relative to WT and GmPgb1-suppressing plants, overexpression of GmPgb1 attenuated the accumulation of foliar Na+ and exhibited a lower Na+/K+ ratio. These changes were attributed to the induction of the Na+ efflux transporter SALT OVERLY SENSITIVE 1 (SOS1) limiting Na+ intake and transport and the inward rectifying K+ channel POTASSIUM TRANSPORTER 1 (AKT1) required for the maintenance of the Na+/K+ balance.

Development of Azo Dye Immobilized Sulfonated Poly (Glycidyl Methacrylate) Polymer Composite as Novel Adsorbents for Water Treatment Applications: Methylene Blue Immobilization Isotherm, Kinetic, Thermodynamic, and Simulations Studies.

Methylene blue (MB) immobilized onto a sulfonated poly(glycidyl methacrylate) (SPGMA) polymer composite has been developed as a novel adsorbent for water treatment applications. The MB adsorptions onto sulfonated poly(glycidyl methacrylate) polymer characters have been studied. The adsorption isotherms, namely Langmuir and Freundlich, have been investigated. Other isotherm models. As a compromise between the Freundlich and Langmuir isotherm models, such as the D-R isotherm and the Temkin isotherm, have been compared. The results indicated that the adsorption process followed the Freundlich isotherm model, indicating heterogeneous surface site energies and multi-layer levels of sorption. This study selected three linear kinetic models, namely pseudo-first order, pseudo-second order, and Elovich, to describe the MB sorption process using SPGMA negatively charged nanoparticles (430 nm). The obtained data revealed that the adsorption process obeyed the pseudo-second-order kinetic model, suggesting that the rate-limiting step in these sorption processes may be chemisorption. Furthermore, the thermodynamic parameters have been evaluated. Moreover, the interaction of the MB molecules with SPGMA nanoparticles has been simulated using the governing equation that describes ion exchange resin derived from Nernst-Plank equations between two ion species. Finally, the developed MB-SPGMA composite adsorbent (27 mg/g) wastested for the first time for the removal of Cr6+ ions and Mn7+ metal ions from dichromate and permanganate-contaminated waters under mild adsorption conditions, opening a new field of multiuse of the same adsorbent in the removal of more than one contaminant.

Cabergoline versus calcium infusion in the prevention of ovarian hyperstimulation syndrome: a randomised controlled study.

The aim of this study was to compare the efficacy of calcium infusion versus cabergoline in the prevention of ovarian hyperstimulation syndrome (OHSS) in IVF patients at high risk for OHSS. One hundred and seventy patients who were stimulated using the long luteal GnRH agonist protocol and at high risk for developing OHSS were randomised in a 1:1 ratio to cabergoline group and calcium gluconate group. In cabergoline group, 0.5 mg of cabergoline was administered once daily p.o. for eight days starting on the day of HCG administration. In calcium gluconate group, intravenous calcium gluconate (10%, 10 ml in 200 ml of physiologic saline) was administered daily for four days starting on the day of ovum pickup. Six patients in cabergoline group and eight patients in calcium gluconate group developed moderate OHSS. One patient in each group developed severe OHSS. The incidence of moderate/severe OHSS was comparable between both groups (8.24% vs. 10.59%, p value = .599, OR = 0.76, 95% CI [0.269-2.138]). The implantation, clinical and ongoing pregnancy rates were similar in the two groups (16.91% vs. 15.84%, p = .771, 35.29% vs. 32.94%, p = .746, and 30.59% vs. 28.24%, p = .736, respectively). In conclusion, calcium infusion and cabergoline have comparable effectiveness in the prevention of OHSS. Both drugs are well tolerated, cheap and have no adverse effects on the reproductive outcomes of IVF cycle.Clinical trial registration: The trial was registered on clinical trials.gov database [NCT02875587].Impact StatementWhat is already known on this subject? The effectiveness of cabergoline in the prevention of OHSS in IVF patients at high risk for OHSS is confirmed by overwhelming scientific evidence. Calcium infusion is a novel strategy for prevention of OHSS. Few studies reported the use of calcium infusion in the prevention of OHSS. A retrospective study and a randomised controlled study revealed that calcium infusion reduces the incidence of OHSS. Moreover, a quasi-randomised study revealed that calcium infusion is as effective as cabergoline in the prevention of OHSS.What the results of this study add? Calcium infusion and cabergoline have comparable effectiveness in the prevention of OHSS. Both drugs are well tolerated, cheap and have no adverse effects on the reproductive outcomes of IVF cycle.What the implications are of these findings for clinical practice and/or further research? Calcium infusion should be used to minimise the incidence of OHSS in IVF patients at high risk for OHSS.

Variceal recurrence 4 years post endoscopic band ligation in hepatitis C patients who achieved sustained virological response with oral direct-acting antiviral therapy.

Oral Direct-acting antivirals (DAAs) are safe, highly effective altering disease burden and prognosis in hepatitis C patients. Sustained virologic response (SVR) is achieved nowadays in more than 90% of the treated patients and related to the improvements in functions of the liver, fibrosis plus survival. Furthermore, portal hypertension is thought to be improved with achievement of virological response, parallel to the improvements in hepatic inflammation and fibrosis. We aimed to assess the recurrence rate of oesophageal varices by long-term follow-up in patients treated with different DAAs regimens who had achieved SVR. We studied 176 Child A cirrhotic HCV patients who achieved SVR after DAAs treatment and had a history of endoscopic oesophageal varices obliteration and were on maximum tolerated propranolol dose. They were subjected to follow-up upper gastrointestinal endoscopy repeated every 6 months for 4 years. Fifty-two patients (29.5%) had recurrence of oesophageal varices observed during the 4-years follow-up upper GIT endoscopy. On multivariate analysis, platelet count was the only significant variable, P-value = .007*. HbA1C, HOMA IR, BMI 1 and BMI 2 showed non-significant differences between the studied groups. By ROC analysis, we identified baseline platelet count of 96 000/µL with 100% sensitivity (95% confidence interval [CI] [91%-100%]) and 74% specificity (95% CI [65%-81%]). Spearman correlation showed a positive correlation between AFP, age, AST, Bilirubin, creatinine, INR. Patients who achieved SVR post DAAs showed a significant decrease in oesophageal varices recurrence post endoscopic obliteration. Baseline platelet count was found to be a strong independent predictor for oesophageal varices recurrence.

Ramadan fasting and liver diseases: A review with practice advices and recommendations.

Ramadan fasting is obligatory for Muslim healthy adults. However, there are many exemptions from fasting; including patients, whose diseases will be aggravated by fasting. Muslim patients with different liver diseases are frequently seen in the clinics discussing their intent to fast this month with their treating physicians. To answer our patients' inquiries about the expected benefits and/or risks of fasting and delivering them the best care, we carried out this review and we draw advices and recommendations based on the available evidence. A web-based search, combining multiple keywords representing different liver diseases with Ramadan fasting had been carried out. To answer the research question: Do adult Muslim patients with different liver diseases who fast the month of Ramadan have had a deleterious effect on their health in comparison to those who did not fast? Relevant publications were retrieved. No randomized controlled trials were focusing on Ramadan fasting and liver diseases in the filtered databases, eg Cochrane library. Consequently, non-filtered databases, eg PubMed, Google Scholar and Egyptian Knowledge Bank searched and full-text high-quality research articles were carefully analysed to draw recommendations. Other relevant publications with low quality of evidence like case studies and short communications were also reviewed to address practice advices. Although Ramadan fasting was found beneficial for patients with NAFLD, it was found deleterious to patients with Child B and C cirrhosis and patients with peptic ulcer. Patients with chronic hepatitis, Child A cirrhosis and those with non-complicated liver transplant can fast with prefasting assessment and strict follow up.

Horizontal versus vertical plication of the rectovaginal septum in transperineal repair of anterior rectocele: a pilot randomized clinical trial.

AIM: Anterior rectocele is usually an asymptomatic condition in many women, yet it can be associated with obstructed defaecation syndrome (ODS). Transperineal repair of rectocele (TPR) has been followed by variable rates of improvement in ODS. The present pilot randomized clinical trial aimed to evaluate the outcome of TPR with vertical plication (VP) of the rectovaginal septum compared to horizontal plication (HP). METHODS: Adult women with anterior rectocele were recruited to the study and were randomly allocated to one of two equal groups. The first group underwent TPR with VP of the rectovaginal septum and the second group underwent TPR with HP. The main outcome measures were improvement in ODS, recurrence of rectocele, complications and dyspareunia. RESULTS: The trial included 40 female patients with anterior rectocele. There was no significant difference between the two groups regarding the postoperative Wexner score. Complete cure and significant improvement in ODS symptoms were comparable after the two techniques. The reduction in rectocele size after HP was significantly greater than after VP (1.7 vs. 2.6, P < 0.0001). Significant improvement in dyspareunia was recorded after HP (P = 0.001) but not after VP (P = 0.1). There was no significant difference between the two groups with regard to operating time, complications and recurrence. CONCLUSION: VP and HP of the rectovaginal septum in TPR were associated with a comparable improvement in ODS symptoms and similar complication rates. HP was followed by a greater reduction in the rectocele size and greater improvement in dyspareunia than VP.

Pollution assessment of the Red Sea-Gulf of Aqaba seawater, northwest Saudi Arabia.

The water pollution index (PIj), degree of contamination (Cd), heavy metal pollution index (HPI), and statistical analyses were used to assess seawater pollution and identify the possible sources of heavy metals from the Red Sea-Gulf of Aqaba coastline, northwest Saudi Arabia. Concentrations of Cr, Sb, Co, Ni, Cu, Zn, Cd, As, Fe, Mn, Hg, and Pb were analyzed and interpreted in 33 surface seawaters samples. The mean heavy metals of seawater were in the following order: Zn (5.51 µg/l) > Ni (2.45) > As (2.43) > Cu (2.34) > Mn (2.20) > Fe (1.81) > Pb (1.31) > Sb (0.64) > Co (0.31) > Cr (0.26) > Cd (0.05) > Hg (0.008). The spatial distribution of heavy metals showed high levels in some individual samples, especially nearby the residential cities, may be due to anthropogenic sources. PIj and Cd indicated light and low pollution for the seawater samples, respectively, while HPI indicated low pollution for 10 samples and medium pollution for the rest ones. The lack of significant correlations between metal pairs (except Cu and As) indicated different sources of pollution. Pollution indices, principal component analysis, and Pearson's correlation coefficient reveal that the quality of seawater in the Red Sea-Gulf of Aqaba coastline is mainly controlled by geogenic processes with minor anthropogenic input.

Benthic Foraminifera as Bio-indicators of Coastal Marine Environmental Contamination in the Red Sea-Gulf of Aqaba, Saudi Arabia.

To assess heavy metals contamination in shallow marine environments using benthic foraminifera as bio-indicators. Forty-six species of foraminifera were found in 33 benthic samples from the Saudi Arabian coast of the Red Sea-Gulf of Aqaba. Forty-six species belonging to 27 genera and 10 families under the Textularina, Rotalina, and Miliolina suborders were recorded in the study area. The most common genera of the recorded fauna were Peneroplis (37.2%), Coscinospira (15.06%), Sorites (10.36%), and Quinqueloculina (7.76%). The influx of clastic sediments would dilute the abundance of foraminifera species, and It may be the main reason for the decrease in abundance Concentrations of Fe, Mn, Cu, Ni, Zn, Pb, Cr, Co, and Cd were measured in the four common species of benthic foraminifera (Sorites orbiculus, Peneroplis planatus, Peneroplis pertusus, and Coscinospira hemprichii) using inductively coupled plasma mass spectrometry. The average values of heavy metals in the study area show that Iron was the most abundant metal (3367 µg/g), followed by Mn (142 µg/g), Cu (30 µg/g), Zn (24 µg/g), Cr (21 µg/g), Ni (14 µg/g), Pb (7 µg/g), Co (4.6 µg/g), and Cd (0.82 µg/g). Iron concentrations recorded in the foraminiferal tests in the study area were lower than those from the Jeddah area of Saudi Arabia. Other metals were found at higher concentrations than those recorded off the Red Sea coast of Saudi Arabia and Egypt. The heavy metals concentrations in the study area may be attributable to terrestrial influx or anthropogenic activities. The increase of abundance of epiphytic foraminifers and the absence of opportunistic foraminifers show normal the environment in the study area.

Functional Outcome and Sexual-Related Quality of Life After Transperineal Versus Transvaginal Repair of Anterior Rectocele: A Randomized Clinical Trial.

BACKGROUND: Methods of treatment of rectocele include transperineal, transvaginal, and transanal approaches and ventral rectopexy. OBJECTIVE: The present randomized study aimed to compare the outcome of transperineal repair and transvaginal repair of anterior rectocele. DESIGN: This is a randomized, single-blinded clinical trial. SETTING: This study was conducted at the Colorectal Surgery Unit, Mansoura University Hospitals. PATIENTS: Adult female patients with anterior rectocele reporting obstructed defecation syndrome were selected. INTERVENTIONS: Anterior rectocele was surgically treated via a transperineal or transvaginal approach. MAIN OUTCOME MEASURES: Improvement in constipation, operation time, hospital stay, complications, changes in anal pressures, and improvement in sexual-related quality of life was assessed by use of the Pelvic Organ Prolapse/Urinary Incontinence Sexual Questionnaire, and the incidence of dyspareunia postoperatively was assessed. RESULTS: Sixty-four female patients of a mean age of 43.5 years were entered into the trial. There was no significant difference between the 2 groups regarding the operation time. Patients undergoing transperineal repair had significantly longer hospital stays than those undergoing transvaginal repair (2.4 vs 2.1 days, p = 0.03). There was no significant difference between the 2 groups regarding postoperative complications and recurrence of rectocele. Significant decrease in the constipation scores was recorded in both groups at 6 and 12 months after surgery. The decrease in the constipation scores after transvaginal repair was significantly higher than after transperineal repair at 6 and 12 months postoperatively. Although resting and squeeze anal pressures were significantly increased at 12 months after transperineal repair, they did not show significant change after transvaginal repair. Improvement in sexual-related quality of life was significantly higher in the transvaginal repair group than in the transperineal repair group at 6 and 12 months after surgery. Dyspareunia improved after transvaginal repair and worsened after transperineal repair, yet this change was insignificant. LIMITATIONS: This was a single-center study comprising a relatively small number of patients. CONCLUSION: Transvaginal repair of rectocele achieved better improvement in constipation and sexual-related quality of life than transperineal repair. Changes in dyspareunia after both techniques were not significant. See Video Abstract at http://links.lww.com/DCR/B148. CLINICAL TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT03801291. RESULTADO FUNCIONAL Y CALIDAD DE VIDA RELACIONADA CON EL SEXO DESPUÉS DE LA REPARACIÓN TRANSPERINEAL VERSUS TRANSVAGINAL DEL RECTOCELE ANTERIOR: UN ENSAYO CLÍNICO ALEATORIZADO: Los métodos de tratamiento del rectocele incluyen los abordajes transperineal, transvaginal y transanal y la rectopexia ventral.El objetivo del presente estudio aleatorizado fue comparar el resultado de la reparación transperineal y la reparación transvaginal del rectocele anterior.Ensayo clínico aleatorizado, simple ciego.Unidad de Cirugía Colorrectal, Hospital Universitario de Mansoura.Pacientes mujeres adultas con rectocele anterior que se quejan de síndrome de defecación obstruida.Tratamiento quirúrgico del rectocele anterior mediante abordaje transperineal o transvaginal.Mejora en el estreñimiento, tiempo de operación, estancia hospitalaria, complicaciones, cambios en la presión anal, mejoría en la calidad de vida relacionada con el sexo evaluada por el cuestionario PISQ-12 e incidencia de dispareunia postoperatoria.Sesenta y cuatro pacientes de sexo femenino de una edad media de 43.5 años ingresaron al ensayo. No hubo diferencias significativas entre los dos grupos con respecto al tiempo de operación. La reparación transperineal tuvo una estancia hospitalaria significativamente más prolongada que la reparación transvaginal (2.4 Vs 2.1 días, p = 0.03). No hubo diferencias significativas entre ambos grupos con respecto a las complicaciones postoperatorias y la recurrencia del rectocele. Se registró una disminución significativa en las puntuaciones de estreñimiento en ambos grupos a los 6 y 12 meses después de la cirugía. La disminución en las puntuaciones de estreñimiento después de la reparación transvaginal fue significativamente mayor que después de la reparación transperineal a los 6 y 12 meses después de la operación. Aunque las presiones anales de reposo y compresión aumentaron significativamente a los 12 meses después de la reparación transperineal, no mostraron cambios significativos después de la reparación transvaginal. La mejora en la calidad de vida relacionada con el sexo fue significativamente mayor en la reparación transvaginal que en el grupo de reparación transperineal a los 6 y 12 meses después de la cirugía. La dispareunia mejoró después de la reparación transvaginal y empeoró después de la reparación transperineal, sin embargo, este cambio fue insignificante.Estudio de un solo centro que comprende un número relativamente pequeño de pacientes.La reparación transvaginal del rectocele logró una mejoría en el estreñimiento y la calidad de vida relacionada con el sexo que la reparación transperineal. Los cambios en la dispareunia después de ambas técnicas no fueron significativos. Consulte Video Resumen en http://links.lww.com/DCR/B148.Ensayos clínicos. Identificador del gobierno: NCT03801291.

Randomized Controlled Trial on Autologous Platelet-Rich Plasma Versus Saline Dressing in Treatment of Non-healing Diabetic Foot Ulcers.

BACKGROUND: This randomized clinical trial was conducted to assess the role of platelet-rich plasma (PRP) gel as a treatment of clean non-healing diabetic foot ulcer (DFU) in comparison with regular dressing with saline as a control. METHODS: Patients with DFU were randomly assigned to one of two equal groups: group I received dressing with PRP gel and group II received regular saline dressing. The main outcomes of the study were percent reduction in the dimensions of the DFU, healing of DFU, and complications at 20 weeks of follow-up. RESULTS: Twenty-four patients were included to the study. The mean age of patients was 55.2 ± 6.4 years. Only three (25%) patients in group I achieved complete healing versus none of group II patients. In total, 8.3% of group I and 41.6% of group II patients did not show any response to treatment. The percent of reduction in the longitudinal and horizontal dimensions of the DFU was significantly greater in group I than group II (43.2% vs 4.1%) and (42.3% vs 8.2%), respectively. The time required to maximum healing was significantly shorter in group I than group II (6.3 ± 2.1 vs 10.4 ± 1.7 weeks, P < 0.0001). CONCLUSION: The use of PRP gel as a dressing for chronic DFU resulted in a more significant reduction in the size of the ulcer when compared to regular saline dressing. Also the time to reach the point of maximal possible healing with the least wound dimensions was significantly shorter when using PRP as a dressing protocol.

Drainage Seton Versus External Anal Sphincter-Sparing Seton After Rerouting of the Fistula Tract in the Treatment of Complex Anal Fistula: A Randomized Controlled Trial.

BACKGROUND: Complex anal fistula is one of the challenging anorectal conditions. Several treatments have been proposed for complex anal fistula, yet none proved to be ideal. OBJECTIVE: This randomized trial aimed to assess the efficacy of external anal sphincter-sparing seton in comparison with the conventional drainage seton in the treatment of complex anal fistula. DESIGN: This was a prospective, randomized, single-blind controlled study. SETTINGS: The study was conducted at the Colorectal Surgery Unit of Mansoura University Hospitals. PATIENTS: Adult patients of both sexes with complex anal fistula were recruited and evaluated with MRI before surgery. INTERVENTIONS: Patients were randomly divided into 2 groups; group 1 was treated with conventional drainage seton and group 2 was treated with external anal sphincter-sparing seton using a rerouting technique. MAIN OUTCOME MEASURES: The duration of healing, incidence of recurrence or persistence, postoperative pain, and complications including fecal incontinence were measured. RESULTS: Sixty patients (56 men) with a mean age of 43 years were included. Mean operation time in group 1 was significantly shorter than group 2 (29.8 ± 4.3 vs 43.8 ± 4.5 min; p < 0.0001). The mean pain score at 24 hours in group 1 was 8.1 ± 1.6 versus 5.3 ± 1.3 in group 2 (p < 0.0001). Five patients (17%) in group 1 experienced complications versus 2 (7%) in group 2. All of the patients in group 1 required a second-stage fistulotomy versus 2 patients (7%) in group 2 (p < 0.0001). Time to complete healing in group 1 was significantly (p < 0.0001) longer than group 2 (103 ± 47 vs 46 ± 18 d). Four patients (13%) in group 1 and 1 patient (3%) in group 2 experienced persistence or recurrence of anal fistula (p = 0.35). LIMITATIONS: This was a single-center study with relatively small numbers in each group. CONCLUSIONS: Patients treated with external anal sphincter-sparing seton after rerouting of the fistula tract achieved quicker healing and less postoperative pain than those with conventional drainage seton. Postoperative complication and recurrence rates were comparable in both groups. See Video Abstract at http://links.lww.com/DCR/A963. TRIAL REGISTRATION: clinicaltrials.gov identifier: NCT03636997 (https://clinicaltrials.gov/ct2/show/NCT03636997).

Mutations in VSX2, SOX2, and FOXE3 Identified in Patients with Micro-/Anophthalmia.

Anophthalmia and microphthalmia (A/M) are rare distinct phenotypes that represent a continuum of structural developmental eye defects. Here, we describe three probands from an Egyptian population with various forms of A/M: two patients with bilateral anophthalmia and one with bilateral microphthalmia that were investigated using whole exome sequencing (WES). We identified three causative mutations in three different genes. A new homozygous frameshift mutation c.[422delA];[422delA], p.[N141Ifs∗19];[N141Ifs∗19] in VSX2 was identified in a patient showing bilateral anophthalmia. A previously reported SOX2 deletion c.[70_89del20] p.[N24Rfs∗65];[=] was found in one subject with bilateral anophthalmia. A novel homozygous in-frame mutation c.[431_433delACT];[431_433delACT], p.[Y144del]; [Y144del]) in FOXE3 was identified in a patient with severe bilateral microphthalmia and anterior segment dysgenesis. This study shows that whole exome sequencing (WES) is a reliable and effective strategy for the molecular diagnosis of A/M. Our results expand its allelic heterogeneity and highlight the need for the testing of patient with this developmental anomaly.