Search

The present work was designed for a thorough investigation into the sperm morphology and morphometry of Kurdish stallions. The semen samples were collected from 10 Kurdish stallions. Three preparations from each ejaculate were stained with eosin–nigrosin (EN), Diff‐Quik (DQ) and Rose Bengal (RB). The area, perimeter, length and width of the sperm head as well as tail length and total sperm length were measured. The parameters ellipticity, elongation, roughness and regularity were calculated. The morphology of sperm was also investigated under scanning and transmission electron microscopes. DQ and RB provided more clarified images for examining sperm structures compared to the EN method. The head length, head width, area and perimeter in EN were significantly higher than those in DQ and RB (p ≤.05). Furthermore, the difference in head width, head area and head perimeter between DQ and RB was not significant (p ≥.05). The tail length and total sperm length in all methods were close together (p ≥.05). The highest percentage of normal sperm was seen in DQ and RB methods (82.55 ± 2.88 and 88.31 ± 5.19) respectively. The highest values for ellipticity, elongation and regularity were found in RB, whereas the highest value for roughness was measured in EN. Tail defects including coiled tails, and folded midpieces were the most frequent. Scanning electron microscope revealed two types of head shapes: heads with round anterior border, and heads with flat anterior border. The results indicated that despite the routine use of EN for morphological assessment of stallion sperm, RB and DQ can be considered for more clarified details of sperm structure including acrosome and midpiece. Furthermore, the Kurdish stallion sperm has morphometric traits in the normal range established for stallions; yet, some traits were larger than those reported for other breeds. It seems that the sperm of the Kurdish stallion has a longer head and tail in comparison with other horse breeds. [ABSTRACT FROM AUTHOR]

Copyright of Al-Anbar Journal of Veterinary Sciences is the property of Republic of Iraq Ministry of Higher Education & Scientific Research (MOHESR) and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Trichoderma are free-living fungi and found commonly in the soil - root ecosystem. They are highly interactive in root, soil and foliar environments. They produce or release a variety of compound that induce localized or systemic resistance responses in plant. In this investigation 10 different synthetic media (Trichoderma specific medium (TSM), Potato dextrose agar (PDA), Asthana & Hawkers, Richard's agar, Sabouraud's dextrose, Rose Bengal agar, Czapex Dox, Beef extract agar, Cooke rose Bengal and Pikovaskys agar) were used to study the morphological and cultural characters of the bio-control agent. Potato dextrose agar medium supported the best growth of the bio-agent, followed by Trichoderma specific medium, Pikovakyas agar and Rose Bengal agar medium. Beef extract agar medium supported the lowest growth of this fungus. Excellent sporulation was obtained on Potato Dextrose Agar and Trichoderma specific medium. It was good on Pikovakyas Agar, Rose Bengal Agar and Sabouraud's agar, fair on Asthana & Hawker, Cooke Rose Bengal Agar, Czapak-dox Agar and Richard Agar, while poor on Beef Extract Agar medium. The maximum colony growth of the mycelium was observed at 25°C. The statistical analysis showed that the isolate T1 (8 CP) exhibited the highest growth, which was significantly superior to other isolates. Rest of the isolates were on par with each other. The maximum dry weight recorded as 208.81, 205.80, 209.17, 207.11, 206.00 and 208.14 mg at pH 7.0. The minimum dry weight recorded at pH 4.0. Thus, excellent sporulation was recorded at pH 6.5 and 7.0. It has been observed that neither alkaline nor acidic conditions are congenial for the growth and sporulation of the bio-agent. [ABSTRACT FROM AUTHOR]

In this study, pure and europium-doped (2%, 4%, 6%, and 8%) cerium oxide (CeO2) nanoparticles (NPs) were employed for efficient dye removal through photocatalytic approach. XRD and TEM confirmed the formation of pure CeO2 nanoparticles, while XPS and Raman spectroscopy were used to analyze the electronic properties and lattice defects, such as oxygen vacancies. The presence of lattice defects, which increased with the concentration of Eu, was found to be responsible for the enhanced degradation of Rose Bengal dye (82.4% for 8% Eu-doped sample) in 75 min. FTIR confirmed the chemical composition of the synthesized sample. The band at 617 cm−1, corresponding to the symmetrical stretching vibration mode of (Ce–O-Ce) or (Ce–O-Eu). The magnetic properties of synthesized samples were examined using VSM, revealing an increase from 4.48 to 11.0 emu/g in magnetization. This enhancement was attributed to F-center exchange mechanism (FCE), resulting from the presence of oxygen vacancies. These findings contribute to the development of advanced materials for sustainable wastewater treatment and spintronics. [ABSTRACT FROM AUTHOR]

Brucellosis is a significant zoonotic disease that poses both health and economic risks. It is endemic in many developing countries, such as Iran. This study aimed to evaluate the prevalence of Brucella abortus infection in native horses in the suburbs of Tabriz, Iran, using serological methods. Blood samples were collected from 141 apparently healthy horses, 45 of which were less than five years old, and 96 were more than five years old. Additionally, 35 were female and 106 were male. The Rose Bengal Plate Test (RBPT), Standard Tube Agglutination Test (STAT), 2-Mercaptoetanole (2-ME) test, and indirect ELISA (i-ELISA) were used to detect the presence of Brucella abortus infection in serum samples. The results showed that 4.96%, 3.54%, and 9.2% of the samples were positive for RBPT, STAT, and i-ELISA tests, respectively. The 2-ME test indicated the presence of IgG in the five serum samples. Of the thirteen positive samples in the i-ELISA test, eight cases (61.5%) were more than five years old, and the remaining five cases (38.5%) were under five years old. Out of thirteen positive cases, four cases (30.8%) were females, and nine cases (69.2%) were males. No significant relationship was found between Brucella abortus-infected cases and the age and gender of the horses. The findings suggest the presence of Brucella abortus contamination in native horses in the study area, emphasizing the importance of considering these animals in control and eradication programs for Brucellosis in the region. [ABSTRACT FROM AUTHOR]

Background: Brucellosis is a serious zoonotic infection with a global socioeconomic impact on both the livestock industry and human health. In Kenya, brucellosis is endemic but there is limited information on the true burden of the disease due to weak or peace-meal surveillance. The true burden and spread of animal brucellosis in Kajiado County is not known. Aim: The aim of the study was to determine the current seroprevalence and spatial distribution of livestock brucellosis in Kajiado County and also to compare the three serological tests, namely; Rose Bengal plate test (RBPT), indirect enzyme-linked immunosorbent assay (i-ELISA), and competitive ELISA (c-ELISA) in the detection of seropositive animals. Methods: A cross-sectional study was undertaken in 5 sub-counties and 13 wards, where a total of 782 serum samples from unvaccinated bovine (n = 278; 34 herds), ovine (n = 256; 25 flocks), and caprine (n = 248; 28 flocks), were screened for anti-Brucella antibodies using RBPT, i-ELISA, and c-ELISA tests, in parallel. Results: Overall animal seroprevalence was 6.91% (54/782); while that for bovine, ovine, and caprine was 18.35% (51/278), 0.78% (2/256), and 0.4% (1/248), respectively. Bovine seroprevalence was 2.2% (6/278), 14.4% (40/278), and 4.7% (13/278) in RBPT, i-ELISA, and c-ELISA tests, respectively; while ovine 0.78% (2/256) and caprine 0.4% (1/248) were positive only in c-ELISA. Bovine herd seropositivity was 67.65% (23/34), whereas ovine and caprine flock seropositivities were 8% (2/25) and 3.6% (1/28), respectively. Conclusion: The findings indicate a moderate seroprevalence of brucellosis in bovine, while that of ovine and caprine was low in Kajiado County. Indirect ELISA was found superior to both c-ELISA and RBPT in detecting bovine seropositive animals, while c-ELISA was superior to both RBPT and i-ELISA in detecting seropositive ovines and caprines. These results will contribute to baseline data for further study of Brucella infection and a starting point for the formulation of a strategy for the control of brucellosis in Kajiado County. [ABSTRACT FROM AUTHOR]

Development of nanocomposites as efficient photocatalysts for the removal of hazardous organic pollutants is always in dire demand due to increase in water pollution. In this article, a facile sol-gel method has been used to synthesize cerium oxide (CeO2) nanoparticles followed by their decoration over multi-walled carbon nanotubes (CNTs) and graphene oxide (GO) to construct binary as well ternary hybrid nanocomposites using ultrasonic treatment. The oxygen vacancy defects have been depicted using X-ray photoelectron spectroscopy (XPS) that may result into improved photocatalytic efficiency. The ternary hybrid nanocomposites (CeO2/CNT/GO) showed excellent photocatalytic efficiency towards degradation of rose bengal (RB) dye up to 96.9% in 50 min. CNTs and GO provide the interfacial charge transfer which inhibits the electron-hole pair recombination. The results obtained here indicate that these composites can be effectively utilized as promising materials for the degradation of harmful organic pollutants for wastewater treatment. [ABSTRACT FROM AUTHOR]

While organic photocatalysts provide increasingly versatile chemical pathways under mild conditions, their long‐term stability remains understudied. Here, the photobleaching behavior of xanthene dye photocatalysts is investigated. Rose Bengal, Eosin Y, and fluorescein are studied when in solution, when grafted to glass beads, and when incorporated into polymer brushes that are tethered to glass beads. This provides a comparison between xanthene's stability as a homogeneous and as a heterogeneous photocatalyst. Photobleaching is investigated using UV–vis, diffuse reflectance UV–vis (DR UV–vis), and fluorescence microscopy. Xanthene dyes as homogeneous photocatalysts exhibit the highest photostability, while the grafted systems appeared to fade more rapidly. Notably, heterogenization appears to have different effects based on the photocatalyst system, and further altering the photocatalyst environment with reagents may improve stability. [ABSTRACT FROM AUTHOR]

In this study, rose bengal‐derived carbon quantum dots (RB‐CQDs) was synthesized by a one‐step solvothermal method using rose bengal and 1,2‐phenylenediamine as precursors in ethanol at 180 °C for 10 h and purified by silica gel chromatography. The as‐synthesized RB‐CQDs disperses well in water with particle sizes ranging from 0.78 to 2.46 nm and exhibits excitation‐independent yellow fluorescent emission (529 nm), high quantum yield (44.3 %) and good biocompatibility. More importantly, the fluorescence of RB‐CQDs can be selectively quenched by Fe3+ ions with good linear correlation and the detection limit is 19.9 nM. The recoveries of this method in actual water samples are 90 % to 110 % with relative standard deviations less than 5 %. [ABSTRACT FROM AUTHOR]

Objective: Brucellosis is one of the most common zoonotic diseases in our country and the world. This study investigated the seroprevalence of brucellosis in individuals who were engaged in animal husbandry in Erzurum region, were over 18 years of age, or did not have any clinical complaints of brucellosis. Materials and Methods: Our study was conducted on 271 volunteers engaged in livestock farming in 20 districts of Erzurum province between 2020 and 2021. Brucella antibodies were investigated in blood samples using ELISA IgG, ELISA IgM, Rose Bengal, and Standard tube agglutination tests. A questionnaire was administered to the participants to investigate the risk factors of brucellosis. Results: The mean age of the participants was 43.6 ± 15.7.2 years (min:18, max:90), and there were 137 male (50.6%) and 134 female (49.4%) particpants. Seropositivity was detected with ELISA IgG in 40 of 271 participants (14.8%). Seropositivity was detected in the ELISA IgM test in 2 of these 40 participants (0.7%). Seropositivity was found in 46 participants (17%) in the Rose Bengal and 29 individuals in the STA test. According to the serology results, ELISA IgG positivity was higher in male participants compared to female participants (ratio=1.6). Among pet owners, ELISA IgG seropositivity was found higher than the participants who did not have pets (ratio=1.9). In the evaluation based on educational status, the rate of seropositivity was slightly higher in the participants who were illiterate and had a poor level of education. Conclusion: In our study, it was determined that the prevalence rate obtained by ELISA IgG was consistent with previous studies conducted in the region. No significant relationship was observed between the serology results of the participants and their gender and educational status. On the other hand, the positivity of ELISA IgG results was higher among the participants who had pets, and there was a significant relationship at the margin. [ABSTRACT FROM AUTHOR]

Brucellosis is a chronic zoonotic disease caused by brucella strains that adversely affects human and animal health. Increases or decreases in acute phase protein (APP) levels are observed in various infective diseases in cattle. In our study, it was aimed to investigate how the change in APP levels in cattle infected with Brucella abortus and which ones can be used as a marker. In the study, blood serum and plasma of 28 brucella and 10 healthy cattle collected from various cattle farm in Samsun were used. Rose bengal plate test and complement fixation test were applied to the serums. While serum amyloid A (SAA), haptoglobin (Hp), albumin, and total protein (TP) levels were determined in the blood serums taken from the groups, fibrinogen (Fb) level was determined in the plasma. As a result of the analysis, SAA 350.2 mg/L, Hp 1.57 g/L, Fb 14.58 µg/mL, TP 8.99 g/L, and albumin 2.99 g/L were found in the group infected with B. abortus. SAA 81 mg/L, Hp 0.41 g/L, Fb 2.1 µg/mL, TP 6.21 g/L, and albumin 3.57 g/L were found in the control group. Comparing the APP levels of cattle infected with B. abortus and the cattle in the control group, the levels of SAA (P < 0.05), Hp (P < 0.05), Fb (P < 0.05), and Tp (P < 0.05) were statistically significantly higher in the infected group, while the level of albumin (P < 0.05) was found to be statistically significantly decreased. [ABSTRACT FROM AUTHOR]

Background: Brucellosis is a zoonotic infectious disease. It is estimated that the number of cases reported today is much less than the actual number. We still have difficulty in diagnosing the disease and its organ involvement. In this sense, new approaches that can be useful in clinical practice are required, and we aimed to evaluate this situation in our study. Methods: 171 of 213 patients followed in our center between January 2021 and April 2024 were included in the study. A total of 150 patients were included in the study as a control group. Rose Bengal test (RBT), Coombs gel test (CGT), enzyme-linked immunosorbent assay (ELISA), and automated blood culture were used for diagnosing brucellosis. Complete blood count, sedimentation, C-reactive protein, and biochemical parameters were obtained. Inflammation markers such as neutrophil–lymphocyte ratio, platelet–lymphocyte ratio, systemic immune-inflammation index, and systemic inflammation response index were calculated. Results: The most successful results in the diagnosis were ELISA (89.4%), RBT (88.3%), CGT (83%), and blood culture (34.8%). For diagnosing sacroiliitis and spondylodiscitis, instead of resorting to expensive methods like magnetic resonance, a combination of ELISA positivity with elevated acute phase reactants and inflammatory markers could be significantly instructive. Conclusions: Optimizing diagnostic algorithms and exploring novel diagnostic approaches, such as inflammatory markers, hold promise for improving diagnosis and management.

Cortical spreading depolarizations (CSDs) are increasingly suspected to play an exacerbating role in a range of acute brain injuries, including stroke, possibly through their interactions with cortical blood flow. We use simultaneous wide-field imaging of neural activity and hemodynamics in Thy1-GCaMP6f mice to explore the neurovascular dynamics of CSDs during and following Rose Bengal-mediated photothrombosis. CSDs are observed in all mice as slow-moving waves of GCaMP fluorescence extending far beyond the photothrombotic area. Initial CSDs are accompanied by profound vasoconstriction and leave residual oligemia and ischemia in their wake. Later, CSDs evoke variable responses, from constriction to biphasic to vasodilation. However, CSD-evoked vasoconstriction is found to be more likely during rapid, high-amplitude CSDs in regions with stronger oligemia and ischemia, which, in turn, worsens after each repeated CSD. This feedback loop may explain the variable but potentially devastating effects of CSDs in the context of acute brain injury.

The undoped TiO2 and Zr/P doped TiO2 of grown nanoparticles are synthesized using a bottom-up approach. Structural characterization like X-ray diffraction patterns, FTIR and optical characteristics like UV–visible spectroscopy for dye degradation with photocatalysts have been observed. The XRD shows that all samples have nearly identical lattice characteristics as its constituent phases indicating no structural changes observed with varying molar concentrations. The FTIR spectra clearly show that no additional chemical bonding is formed between un-doped TiO2 and doped TiO2 samples. The UV visible spectra of all doped TiO2 samples reveal bands for degradation of Rose Bengal over the minimum period. The optical band gap of doped TiO2 samples with dye degradation of Rose Bengal is measured using the Tauc plot. The percentage of Photodegradation of Rose Bengal with PZT6 is more than 95 % over 40 min. The Beer-Lambert relation is used to determine the proportion of photocatalytic degradation of Rose Bengal with all doped TiO2 nanoparticles. The rate constant of all doped TiO2 nanoparticles is obtained from kinetic studies that fitted pseudo-first-order reactions.

Herein, adsorption of Rose Bengal dye (RB) from aqueous solution was investigated. Nano raw orange peel (OP) activated carbon (AC) coated with nano chitosan (Cs) to obtain nano chitosan/activated carbon (AC/Cs) composite which cross-linked with functionalized multi-walled carbon nanotubes (MWCNTs-COOH) to create a novel composite (AC/Cs/MWCNTs) with high surface area (1923 m2/g). The examined parameters such as concentration (1–7 ppm), pH (6.5–9.5) and temperature (295–323 K) were traversed. The maximum removal efficiency was at pH 6.5, increased from 70.4% for nano OP to 94.7% for AC/Cs/MWCNTs nano composite. Langmuir isotherm model was the best fitting to acquired data (R2 ≥ 0.99). Also, the adsorption of RB matched with pseudo-second order model, t0.5 results for pseudo-second order was 4.4672 for nano OP and 1.2813 for AC/Cs/MWCNTs at 303 K. Thermodynamic studies showed that the adsorption of RB dye is exothermic and spontaneous due to the negative value of ΔG and ΔH. [ABSTRACT FROM AUTHOR]

A potential approach to the preparation of affordable activated hydrochar is the hydrothermal carbonization of biomass wastes. In this study, hydrochar was made by hydrothermally carbonizing corncob wastes and then activating them with sodium hydroxide (NaOH). According to the findings, the adsorption capabilities of hydrochar generated at prolonged retention durations, lesser liquid-to-solid ratios, and elevated temperatures were considerably greater. The hydrochars were then analyzed utilizing a variety of characterization methods, and batch tests involving the sorption of rose bengal dye were carried out under a variety of conditions. According to the findings, activated hydrochar has a specific surface area of 12.794 m2/g. In order to better understand and characterize the process of rose bengal dye adsorption, sorption kinetics, and sorption equilibrium onto the produced hydrochars, sorption kinetics and isotherms were further examined through experimental data fitting. The NaOH-activated hydrochar's adsorption capacity was 799.9 mg/g, respectively. The objective of this research was to assess the viability of using NaOH-activated hydrochar derived from corncobs as an economical and efficient sorbent for eliminating anionic dyes like rose bengal from aqueous solutions. Additionally, the study sought to investigate how various factors influence its sorption capabilities and to provide insights into the adsorption process through kinetic and isotherm analyses. [ABSTRACT FROM AUTHOR]

In the era of organic synthesis, the direct difunctionalization strategies of alkenes and alkynes are very eminent, which open up an excellent route to introduce two functional groups simultaneously. At the same time, photocatalysis has become an imperative tool in organic synthesis due to its activation potential along with their environmentally benign nature. Moreover, the employment of photoredox catalysis in the di-functionalization strategy has become a step ahead toward sustainability, specifically when the photoredox catalyst is metal-free. In this review, realizing tremendous important trend, we have specifically tried to assemble several reported difunctionalization strategies of alkynes and alkenes using metal-free dye-based photoredox catalysts. This perspective showed the use of eosin Y, 4CzIPN, Rose Bengal, Mythylene Blue, rhodamine B, Ph-PTZ, etc., as the most used organophotoredox catalysts. Furthermore, a detailed discussion of the mechanistic pathway is given in every scheme to depict a clear perspective of photoredox catalysts. [ABSTRACT FROM AUTHOR]

Conversion of carbon-rich waste biomass into valuable products is an environmentally sustainable method. This study accentuates the synthesis of novel SnO2 QDs@g-C3N4/biochar using low-cost sawdust by applying the pyrolysis method. Morphology, structure, and composition of the synthesized SnO2 QDs@g-C3N4/biochar nanocomposite were characterized using SEM (scanning electron microscope), TEM (transmission electron microscope), XRD (X-ray diffraction), XPS (X-ray photoelectron spectroscopy), FT-IR (infrared spectroscopy) and PL (photoluminescence) spectroscopy. The average diameter of the SnO2 QDs was measured from TEM and found to be 6.79 nm. Optical properties of the as-synthesized SnO2 QDs@g-C3N4/biochar were characterized using UV–visible spectroscopy. The direct band gap of synthesized SnO2 QDs@g-C3N4/biochar nanocomposite was calculated from Tauc's plot and found to be 2.0 eV. The fabricated SnO2 QDs@g-C3N4/biochar photocatalyst exhibited outstanding photocatalytic degradation efficiency for the removal of Rose Bengal (RB) and Methylene Blue (MB) dye through the Advanced Oxidation Process (AOP). The synthesized photocatalyst showed a degradation efficiency of 95.67% for the removal of RB under optimum conditions of 0.3 mL H2O2, photocatalyst dosage of only 0.06 gL−1, and 15 ppm initial RB concentration within 80 min, and 94.5% for the removal of MB dye with 0.5 mL of H2O2, 0.08 gL−1 of the fabricated photocatalyst and 6 ppm of initial MB concentration within 120 min. The photodegradation pathway followed the pseudo-first-order reaction kinetics with a rate constant of 0.00268 min−1 and 0.00163 min−1 for RB and MB respectively. The photocatalyst can be reused up to the 4th cycle with 80% efficiency. [ABSTRACT FROM AUTHOR]

This study aimed to compare the suitability of three chimeric recombinant outer membrane proteins of Brucella (rOmps 19 + 25, 19 + 31, and 25 + 31) for the diagnosis of bovine and sheep brucellosis using an indirect ELISA (i-ELISA). The diagnostic properties of these proteins in an i-ELISA were studied using blood serum samples from cattle and sheep with known positive and negative results for brucellosis based on the rose Bengal plate test (RBT), complement fixation test (CFT), and a commercial ELISA (c-ELISA) kit, as well as using animal sera from fresh foci of infection with unknown reactivity. rOmps19 + 31 and 19 + 25 conferred 99-100% specificity to the i-ELISA compared with RBT, CFT, and c-ELISA in both bovine and sheep sera testing. i-ELISA/rOmp19 + 31 exhibited a higher sensitivity in serological examinations of cattle than in that of sheep, compared to RBT (89% vs. 44%) and CFT or c-ELISA (78% vs. 42%). In the study of cattle and sheep residing in the fresh foci of infection with positive RBT, anti-Brucella antibodies were detected by i-ELISA/rOmp19 + 31 in the blood serum of 80% and 86% of animals with the test specificities of 100% and 70%, respectively. These results indicate rOmp19 + 31 as a potential target antigen for the diagnosis of bovine and sheep brucellosis; however, further large-scale studies are required to determine the effectiveness of this protein as an i-ELISA antigen. [ABSTRACT FROM AUTHOR]

Microbubbles loaded with Rose Bengal and docetaxel (DTX-MB-RB) were more effective when activated using ultrasound than a standard dose of docetaxel. [Display omitted] Docetaxel (DTX) chemotherapy is commonly used in the treatment of patients with advanced prostate cancer demonstrating modest improvements in survival. As these patients are often elderly and the chemotherapy treatment is not targeted, it is often poorly tolerated. More targeted approaches that increase therapeutic efficacy yet reduce the amount of toxic chemotherapy administered are needed. In this manuscript, we investigate the potential of ultrasound targeted microbubble destruction (UTMD) to deliver a combination of docetaxel chemotherapy and Rose Bengal mediated sonodynamic therapy (SDT) in pre-clinical prostate cancer models. A Rose Bengal modified phospholipid was synthesized and used as a component lipid to prepare a microbubble (MB) formulation that was also loaded with DTX. The DTX-MB-RB formulation was used in the UTMD mediated treatment of androgen sensitive and androgen resistant 3D spheroid and murine models of prostate cancer. Results from the 3D spheroid experiments showed UTMD mediated DTX-MB-RB chemo-sonodynamic therapy to be significantly more effective at reducing cell viability than UTMD mediated DTX or SDT treatment alone. In an androgen sensitive murine model of prostate cancer, UTMD mediated DTX-MB-RB chemo-sonodynamic therapy was as effective as androgen deprivation therapy (ADT) at controlling tumour growth. However, when both treatments were combined, a significant improvement in tumour growth delay was observed. In an androgen resistant murine model, UTMD mediated DTX-MB-RB chemo-sonodynamic therapy was significantly more effective than standard DTX monotherapy. Indeed, the DTX dose administered using the DTX-MB-RB formulation was 91% less than standard DTX monotherapy. As a result, UTMD mediated DTX-MB-RB treatment was well tolerated while animals treated with DTX monotherapy displayed significant weight loss which was attributed to acute toxic effects. These results highlight the potential of UTMD mediated DTX-MB-RB chemo-sonodynamic therapy as a targeted, well tolerated alternative treatment for advanced prostate cancer. [ABSTRACT FROM AUTHOR]

With the objective of creating an electro‐responsive and antimicrobial device suitable as delivery system for Rose Bengal (RB) to the skin, a hybrid hydrogel combining Chitosan (CS) and Graphene Oxide (GO) are designed, serving as functional polymer support and active filling element, respectively. The hybrid system, synthesized using tripolyphosphate as a crosslinker via ionic gelation, shows a uniform and homogeneous surface, as verified by SEM investigations, high biocompatibility when tested on human fibroblast lung cells MRC‐5 cells, and biodegradability in phosphate buffered medium at physiological pH. Drug loading and release experiments, extensively analyzed using suitable mathematical modeling, shows the enhancement of the binding efficiency conferred by GO (534 and 979 mg g−1 for blank and hybrid hydrogels, respectively) and an electro‐responsive behavior (maximum BR release of 36 and 23% at 0 and 12 V, respectively). Additionally, hybrid hydrogel is found to prevent the adhesion of methicillin‐resistant Staphylococcus aureus and to kill the bacterial cells by taking advantage of the sustained release of the antimicrobial RB. [ABSTRACT FROM AUTHOR]

Background: Brucellosis remains one of the global health concerns that reemerges in recent years. Delayed or inaccurate diagnosis end to a long treatment duration and financial burden; therefore, finding a good antigen for detection of specific anti-Brucella antibodies is crucial. We intended to evaluate the serodiagnosis value of recombinant Brucella outer membrane protein 19 kDa (rOMP19) using indirect ELISA system compared with Rose Bengal test. Results: The OMP19 sequence was successfully cloned into pET-28a and produced in E. coli cells (DE3). After extraction and purification of rOMP19, this protein was used for designing indirect ELISA to detect anti-Brucella antibodies in 73 human sera, including 6 brucellosis-positive and 67 brucellosis-negative samples. The accuracy of rOMP19 ELISA was evaluated by receiver operating characteristic (ROC) curve and then compared with Rose Bengal plate test and a commercial anti-IgG Brucella ELISA kit. In comparison with Rose Bengal plate test, the area under the ROC curve was 0.985 (95% CI, 0.96–1.00). From coordinates of the curve, the optimal cut-off value was selected at 0.147, in which the diagnostic sensitivity was 100%, and the specificity was 94%. At this cut-off point, 10 samples were diagnosed as positive (6 true positives and 4 false positives), while negative samples were all correctly diagnosed. The results of our designed rOMP19 ELISA was the same as data obtained from commercial ELISA kit, which applied LPS as an antigen. Conclusions: We concluded that OMP19 is an efficient antigen for the serodiagnosis of human brucellosis. [ABSTRACT FROM AUTHOR]

Introduction: Brucellosis is a serious community health problem and endemic disease in Tanzania in both humans and animals. Frontline health workers (FHWs) play a vital role in reporting and hence prevent and control brucellosis in rural settings. This study aims to evaluate the effect of awareness training to frontline health workers and use of electronic technology (e- technology) on reporting of brucellosis cases. Methods: A quasi-experimental design was implemented in two pastoral communities in eastern part of Tanzania with one as control and another as treatment involving 64 FHWs who were purposively selected from May 2020 to December 2020. A total of 32 FHWs from treatment pastoral community were purposively selected for awareness training, rapid diagnosis using Rose Bengal test (RBT) and use of electronic technology (AfyaData app) for brucellosis reporting while nothing was done in control community. Before and after training information about their knowledge, attitude and practices were collected from all participants using a structured questionnaires uploaded in the mobile phone powered by AfyaData application. Blood samples were collected from 141 febrile patients attending the selected facilities in treatment community. Serum obtained from collected blood were analyzed using RBT and Competitive Enzyme Linked Immunosorbent Assay (c-ELISA) for brucellosis screening and confirmatory, respectively. Results from this analysis were reported back to the health facility using AfyaData app. Chi-square was used to analyze categorical variables and t-test and/Anova test was used to assess the effectiveness of the intervention. Results: Results revealed that before the training majority of the participants were ignorant about brucellosis, although they had good attitude towards brucellosis prevention. Participant's awareness, practice and attitude increased significantly (p = 0.003, p = 0.001, p = 0.032) respectively, after the intervention. Total of 17(12.1%) patients were positive on RBT and four (2.8%) were confirmed by c-ELISA. AfyaData app was proven to provide quick reports regarding brucellosis in the study area. Conclusion: The training program was effective in increasing the level of knowledge and practice about brucellosis. Electronic based technology (AfyaData app) improved the reporting of brucellosis cases. There is a need for the use of electronic based technology to improve timely management of brucellosis in pastoral communities. Also, continuous training on FHWs regarding the disease is needed to improved their awareness and practices. [ABSTRACT FROM AUTHOR]

The interaction of rose bengal (RB) aggregates with silver nanoparticles (AgNPs) is investigated to understand the factors that contribute toward metal nanopaticle enhanced fluorescence (MEF), such as reproducibility, spectral shift, and distortion. Various shapes and sizes of RB aggregates (spherical, rods, and fibrils) are formed upon preparing films from their solution in solvent with different polarities. These molecular aggregates are disrupted in the presence of AgNPs, resulting in different enhancement factors, not only because of MEF but also due to hindrance to aggregation-caused quenching. Microspectroscopic studies provide valuable insights into the microheterogeneity of these mixed aggregates. Interestingly, the excited state decay pathways remain the same at the nanosecond time scale for different emission wavelengths. Additionally, the lifetime distribution is very narrow due to the interaction of RB deaggregates with the plasmonic AgNPs. [ABSTRACT FROM AUTHOR]

Brucella epididymo-orchitis (BEO) is a rare complication of brucellosis. Despite the high incidence of brucellosis in developing countries, few case series on BEO are available. This study focuses on the clinical presentations, diagnosis, and treatment of BEO with a review of the literature. This study included consecutive BEO patients diagnosed and treated at Smart Health Tower between 2021 and 2023. The required data were retrospectively collected from patients' profiles. The BEO diagnosis was established through scrotal Doppler ultrasound in cases with a positive Rose Bengal test and positive IgG and IgM results for brucellosis, in addition to scrotal pain and swelling. This study included 11 cases whose ages ranged from 22 to 55 years. Most of the cases presented with testicular pain (72.7%), followed by fever (63.6%) and arthralgia (63.6%). The right side (54.5%) was slightly more affected than the left side (45.5%). The major abnormal laboratory finding was an elevated C-reactive protein (82%). The treatment was conservative, in which a combination of gentamicin, doxycycline, and rifampicin was administered to the patients for about 6-8 weeks. One case underwent an orchiectomy due to the abscess formation. All the patients responded well to the treatment, with no recurrence. In the Middle East, brucellosis remains a concerning infectious disease. Early diagnosis, aimed at preventing abscess formation and other complications, takes first priority to avoid invasive interventions. [ABSTRACT FROM AUTHOR]

Ischemic stroke is one of the major causes of devastating neurological disabilities and mortality worldwide. Despite extensive research for treatment approaches, there remains limited therapy in the stroke field. Therefore, more research is required for reproducibility to understand stroke pathology in pre-clinical studies. In the current modified method, mice were subjected to photothrombotic stroke (pt-MCA; proximal-middle cerebral artery was exposed with a 532 nm laser beam for 4 min) by retro-orbital injection of photosensitive dye, Rose Bengal (15 mg/kg) before the laser light exposure. Sensorimotor deficits were assessed by rotarod and catwalk test at 72 h following post-pt-MCAO, and brain samples were collected for infarct volume and hemorrhagic transformation (HT) assessments. Cognitive impairments were assessed by a novel objective recognition and Morris's water maze tests at the end of the follow-up. pt-MCAO animals significantly reduced body weight and impaired motor and cognitive functions. Furthermore, pt-MCAO animals showed apparent infarction, brain edema, and increased HT compared to the sham animals. Additionally, this method enables concurrent measurement of short-term and long-term neurological dysfunction with relatively larger cortical and sub-cortical infarct volume following pt-MCAO. With respect to the other models, this modified model offers enhanced reproducibility regarding infarct volume and cognitive/functional outcomes and avoids complications associated with critical surgeries and craniotomy. In conclusion, this modified model helps to understand stroke pathogenesis and minimize the animals' numbers which help to increase the scientific and statistical potential in pre-clinical studies. [ABSTRACT FROM AUTHOR]

Background and Aim: The diagnosis of bovine brucellosis in animals vaccinated with strain-19 (S19) and Rose Bengal (RB)-51 strain vaccines can be misinterpreted due to false positives. This study aimed to compare diagnostic tests for detecting bovine brucellosis in animals vaccinated with S19 and RB51 vaccine strains. Materials and Methods: Two groups of 12 crossbred Holstein calves between 6 and 8 months of age were used. On day 0, blood samples were collected from the animals, and the competitive enzyme-linked immunosorbent assay was used for serological diagnosis of bovine Brucellosis. All animals tested negative. After the first blood collection, the animals were subcutaneously vaccinated: one group received the S19 vaccine and the other received the RB51 vaccine. From the 3rd month after vaccination, all animals were sampled. Sampling was repeated every 2 months until the 7th month. Serological diagnosis of bovine brucellosis was performed using RB, tube serum agglutination test (SAT), SAT with 2-mercaptoethanol (SAT-2Me), and fluorescence polarization assay (FPA). Results: Animals vaccinated with S19 showed positive results with the RB, SAT, and SAT-2Me tests in all months of post-vaccination diagnosis. In animals vaccinated with S19, FPA showed positive results at months 3 and 5 and negative results at month 7, indicating that this test discriminates vaccinated animals from infected animals 7 months after vaccination. Rose Bengal, SAT, SAT-2Me, and FPA tests showed negative results in animals vaccinated with RB51 in all months of diagnosis. Conclusion: Animals vaccinated with S19 may test positive for brucellosis using RB, SAT, or SAT-2Me tests 7 months later. Fluorescence polarization assay is an optimal alternative for diagnosing animals in the field, thereby preventing false positives, and consequently, unnecessary confiscations of animals. Animals vaccinated with RB51 tested negative with RB, SAT, SAT-2Me, and FPA tests in all months of diagnosis, confirming that the tests are ineffective for diagnosing brucellosis caused by rough strains. [ABSTRACT FROM AUTHOR]

Benthic foraminiferal assemblages were studied in twenty surface sediment samples collected in the western part of the East Siberian Sea in the framework of the expedition of the R/V Ivan Kireev in 2004. Rose Bengal treatment made it possible to separate "living" and dead individuals. Taxonomic analyses reveal that "living" calcareous foraminifers dominate in the study region with the exception of the New Siberian Islands area and area to the northeast from the Indigirka River mouth where agglutinated tests constitute up to a half of the assemblage. Little amount of dead individuals points to a rapid dissolution of calcareous tests immediately after death of the organism. Taxonomic composition of the studied assemblages is similar to river-proximal benthic foraminiferal assemblage previously determined for the Kara Sea. In the East Siberian Sea, Elphidium clavatum, Elphidiella groenlandica, Haynesina orbiculare, E. incertum and Lagenammina atlantica are the most common species. Gordiospira arctica, Buccella frigida, E. bartletti, Reophax curtus, R. scorpiurus and polymorphinids are less abundant taxa. As a result of the statistical analysis, four areas with specific BF assemblages have been distinguished: the area of the Indigirka River mouth, the zone affected by the Siberian Coastal Current, the area located to the north of the Siberian Coastal Current and zone situated close to the New Siberian Island archipelago together with an area located to the northeast from the mouth of the Indigirka River. Such a distribution of benthic foraminiferal assemblages in the study region seems to be related to the distance of the river discharge area, type of sediments and fresh organic matter content. [ABSTRACT FROM AUTHOR]

The immobilization of Rose Bengal onto Merrifield resin and its application in the light‐driven metal‐free thiocyanation of azaheterocycles in continuo were investigated. The supported photocatalyst was used in batch reactions under heterogeneous conditions, with different azaheterocycles, and proved to efficiently promote the reaction. Its recovery and recycle were also demonstrated for up to four times. The resin‐supported Rose Bengal was then employed under continuous flow conditions, affording thiocyanate functionalized azaheterocycles with higher space‐time‐yields than the in‐batch transformations, and in a shorter reaction time. The easily modification of the SCN groups was also demonstrated by synthetizing trifluoromethyl thioethers and sulfenyl tetrazoles derivates in high yields. [ABSTRACT FROM AUTHOR]

Brucellosis is a popular, zoonotic disease that has detrimental implications on human, animal, and economic health. This study compared the efficiency and effectiveness of various serological tests for the seroprevalence of brucellosis in cattle in four Egyptian governorates, including the buffered acidified plate antigen (BAPA) assay, Rose Bengal Plate Test (RBPT), indirect enzyme-linked immunosorbent assay (i-ELISA), and competitive enzyme-linked immunosorbent assay (c-ELISA). A total of 240 sera samples were collected from asymptomatic cattle from Cairo (n = 58), Ismailia (n = 62), Beni Suif (n = 60), and Fayom (n = 60) in Egypt. According to PABA, RBT, i-ELISA, and c-ELISA assay results, the overall prevalence of brucellosis was 141 (58.75%), 141 (58.75%), 169 (70.4%), and 160 (66.66%), respectively. i-ELISA as the gold standard: the sensitivity, specificity, and accuracy of RBT were evaluated as 99, 70 and 59%, respectively with a 95% confidence interval (CI) of 95 to 100%, 60 to 79% and 52 to 65%. While considering c-ELISA as the gold standard: the sensitivity, specificity, and accuracy of RBT were evaluated as 100, 81 and 59%, respectively with a 95% CI of 97 to 100%, 72 to 88% and 52 to 65%, respectively. In conclusion, both ELISA tests were proven to be superior serological tests than PABA and RBPT, and they may be suggested for use in Egypt in screening cattle for brucellosis. A national campaign to control and prevent brucellosis should also get underway to lower its incidence. To do this, veterinary practitioners and cattle owners should exert more effort to inform the public about the economic effects and zoonotic potential of the disease. [ABSTRACT FROM AUTHOR]

Objective: Assessment of post surface conditioners [sulfuric acid (SA), Rose Bengal (RB), and sandblasting (SB)] and different luting cements [methyl methacrylate (MMA)-based cement and composite-based cement] on pushout bond strength (PBS) of poly-ether ether-ketone (PEEK) post bonded to canal dentin. Materials and methods: Endodontic treatment was performed on 120 single-rooted human premolar teeth. The preparation of the post space was performed and 4mm of gutta-percha was retained in the apical region of the root. One hundred and twenty PEEK posts were fabricated from a PEEK blank utilizing a Computer aided design-Computer aided manufacture (CAD-CAM) system. The PEEK posts were allocated randomly into four groups based on post surface conditioning (n = 30). Group A: SA, Group B: RB, Group C: SB, and Group D: No conditioning (NC). Each group was further divided into two subgroups based on the luting cement used for bonding (n = 15). Group A1, B1, C1, and D1 specimens were cemented using composite-based resin cement. However, Group A2, B2, C2, and D2 posts were luted with MMA-based resin cement. PBS assessment using a universal testing machine was performed. Failure modes were analyzed under a stereomicroscope. The data relating to the effects of surface treatment and luting types of cement were analyzed using one-way analysis of variance (ANOVA) and Tukey's post hoc test ( p = 0.05). Results: Coronal section of Group B2: RB+Super-Bond C&B [9.61 ± 0.75 megapascals (MPa)] displayed the highest bond scores of PEEK after root dentin. Whereas it was also discovered that Group D1: NC+Panavia®V5 (2.05 ± 0.72 MPa) presented the lowest PBS scores. Intergroup comparison analysis revealed that Group A2: SA+Super-Bond C&B and Group B2: RB+Super-Bond C&B displayed no significant difference in their bond scores. Conclusions: RB and SA possess the potential to be used as a PEEK post conditioner. MMA-based cement displayed better performance than composite-based cement. [ABSTRACT FROM AUTHOR]

The motivation of this work is to identify structural, optical, magnetic properties of ZnFe2O4/CeO2 nanocomposites and their potential use in removal of water-polluting dye. The cost-effective hydrothermal technique was used to synthesize ZnFe2O4/CeO2 nanocomposites of different weight ratio (1:1, 1:2, 1:3, and 1:4). XRD pattern of synthesized samples show two different phases corresponding to ZnFe2O4 and CeO2, respectively. FTIR spectra enlightened Zn–O, Fe–O, and O–Ce–O bonds in synthesized nanocomposites. Further UV–Vis spectroscopy demonstrated that band gap varies from 2.17 to 3.12 eV. This change may be attributed to creation of new sub-band gap energy levels upon addition of wide band gap semiconductor (CeO2). Magnetic investigations showed that pure ZnFe2O4 has greater magnetic character than other synthesized materials, with a maximum magnetization of 1.42 emu/g. HRTEM analysis showed spherical morphology of synthesized samples. In comparison to single metal oxides (ZnFe2O4 and CeO2), maximum photodegradation efficiency of ZnFe2O4/CeO2 (1:4) nanocomposites for Rose Bengal dye was observed to be 95% in 75 min. Furthermore, photocatalytic activity remains unchanged after four runs for this photocatalyst, allowing the reusability of catalysts. In nanocomposites, Ce4+/Ce3+ redox couple and heterojunction interfaces have encouraged electron transport and photo-excited electron–hole recombination which ultimately affects photodegradation efficiency of nanocomposites. [ABSTRACT FROM AUTHOR]

Microvascular stalling, the process occurring when a capillary temporarily loses perfusion, has gained increasing interest in recent years through its demonstrated presence in various neuropathologies. Studying the impact of such stalls on the surrounding brain tissue is of paramount importance to understand their role in such diseases. Despite efforts trying to study the stalling events, investigations are hampered by their elusiveness and scarcity. In an attempt to alleviate these hurdles, we present here a novel methodology enabling transient occlusions of targeted microvascular segments through multiphoton excitation of Rose Bengal, an established photothrombotic agent. With n = 7 mice C57BL/6 J (5 males and 2 females) and 95 photothrombosis trials, we demonstrate the ability of triggering reversible blockages by illuminating a capillary segment during ∼300 s at 1000 nm, using a standard Ti:Sapphire femtosecond laser. Furthermore, we performed concurrent Optical Coherence Microscopy (OCM) angiography imaging of the microvascular network to highlight the specificity of the targeted occlusion and its duration. Through comparison with a control group, we conclude that blood flow cessation is indeed created by the photothrombotic agent via multiphoton excitation and is temporary, followed by a flow recovery in less than 24 h. Moreover, Immunohistology points toward a stalling mechanism driven by adherence of the neutrophil in the vascular lumen. This observation seems to be promoted by the inflammation locally created via multiphoton activation of Rose Bengal. [ABSTRACT FROM AUTHOR]

Non-invasive imaging plays a crucial role in diagnosing and studying eye diseases. However, existing photoacoustic ophthalmoscopy (PAOM) techniques in mice have limitations due to handling restrictions, suboptimal optical properties, limited availability of light sources, and permissible light fluence at the retina. This study introduces an innovative approach that utilizes Rose Bengal, a contrast agent, to enhance PAOM contrast. This enables visualization of deeper structures, such as the choroidal vasculature and sclera in the mouse eye, using visible light. The integration of near-infrared-II (NIR-II) optical coherence tomography provides additional tissue contrast and insights into potential NIR-II PAOM capabilities. To optimize imaging, we developed a cost-effective 3D printable mouse eye phantom and a fully 3D printable tip/tilt mouse platform. This solution elevates PAOM to a user-friendly technology, which can be used to address pressing research questions concerning several ocular diseases, such as myopia, glaucoma, and/or age-related macular degeneration in the future. [ABSTRACT FROM AUTHOR]

Rose Bengal, an organic dye is a red or rose color, anionic in nature and important xanthene dyes in textile, dyeing and photochemical industries. where as direct brown 127 belongs to multi-azo class is a black light brown in color and are usually cheap, easily applied for use on cotton and other cellulose fibres such as cotton, rayon and linen. Thence, the present work has fabricated to eliminated the rose Bengal and direct brown 127 dye from waste water where it adsorbed on the surface of the adsorbent i.e. ZnO nanoparticles biologically synthesized by aqueous tuber extract of Arisaema tortuosum. These biologically synthesized ZnO nanoparticles were characterized by UV-Visible, XRD, FTIR SEM and TEM techniques that corroborated the formation of zinc oxide in the nano-range. Certainly the removal of rose Bengal and direct brown 127 dyes by changing their concentration in the aqueous medium using adsorption and degradation method follows centrifugation was estimated by quantitative analysis using UV-Vis spectrophotometer. The results have shown that ZnO NPs were very efficient to remove the rose Bengal and direct brown 127 dye pollutant from aqueous solutions under various conditions (dye concentration, adsorbent dosage, adsorbate dosage, contact time and effect of time on % decolourization of dye with nanoparticle concentration) made it an ideal alternative as compared to other expensive treatment methods and potential toxicity. [ABSTRACT FROM AUTHOR]

The uncontrolled dumping of synthetic dyes into water sources has posed severe hazards to the ecosystem. For decades, several materials with low cost and high efficiency have been investigated for dye degradation. Photocatalytic degradation is regarded as a successful strategy since it utilizes sunlight to transform harmful pollutants into nontoxic compounds without using oxidative agents. The photocatalytic potentials of CeO2/g-C3N4 (CG) were investigated in this work using a simplistic ultrasonication process. Here, the amount of CeO2 was fixed, and g-C3N4 was varied in the ratio (1:x, where x = 1, 2, and 3) and abbreviated as CG1, CG2, and CG3. Characterization techniques such as Fourier transforms-infrared spectroscopy, thermal gravimetric analysis (TGA), powdered X-ray diffraction, ultraviolet–visible spectroscopy, etc. were used to characterize structural analysis, optical properties, particle size, and chemical bonds of the prepared nanocomposites. The photocatalytic results showed that CG2 effectively degraded rose bengal (RB) and crystal violet (CV) dyes when exposed to visible light irradiation as compared to pure GCN and CeO2. The antibacterial activity analysis further supported the potential application of prepared photocatalyst as a disinfectant agent against both gram-positive (Staphylococcus aureus and Bacillus cereus) and gram-negative (Salmonella abony and Escherichia coli) pathogenic strains of bacteria. [ABSTRACT FROM AUTHOR]

Although metal–organic frameworks (MOFs) are a viable choice for photocatalysts with large surface area and tunable pore structure, the rapid recombination of excited photogenerated charges results in low activity towards photodegradation. Aiming at improving the photocatalytic activities of MOFs, different strategies to incorporate MOF with light-harvesting semiconductors have been developed. In this research, we report an effective photocatalyst designed by incorporating Cu-MOF with ZnO for the photocatalytic degradation of Rose Bengal exhibiting excellent degradation efficiency of 97.4% in 45 min under natural sunlight with catalyst dosage of 320 mg/L. The optical, morphology and surface characteristics of the prepared nanocomposite were studied using scanning electron microscopy (SEM–EDX), high-resolution transmission electron microscopy (HRTEM), powder X-ray diffraction (PXRD), Brunauer–Emmett–Teller (BET) analysis, thermogravimetric (TGA) analysis, Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS) and ultraviolet diffused reflectance spectroscopy (UV-DRS) techniques. Further studies showed that the degradation followed first-order kinetics with a rate constant of 0.077869 min−1. The degradation mechanism was investigated by photoluminescence (PL) study, XPS, zeta potential and quenching experiment in presence of different scavengers. Meanwhile, the fabricated composite displayed good recovery and reuse properties up to 5 cycles as revealed by XRD analysis proving itself a potential MOF-based photocatalyst towards environmental remediation process. [ABSTRACT FROM AUTHOR]

The health of herds that are not within the official Brucellosis control program in the province of Azuay is unknown, and there may be areas with a higher frequency of seropositive herds. This paper aims to determine the prevalence and risk factors associated with bovine brucellosis in dairy farms. An epidemiological study was carried out in 436 farms, for which milk samples were taken from producers in collection centers, collecting trucks and herds. A georeferenced survey was used to collect information on the management of the herds. The milk was analyzed by indirect-ELISA, and thirty-seven farms were seropositive, obtaining a prevalence of 8,5%. The percentages of seropositivity were: Cuenca (14.84%), Girón (23.07%), Nabón (8.21%), Oña (11.53%), San Fernando (33.33%), Sevilla de Oro (7.14%), Sigsig (4.16%). The Rose Bengal and competitive ELISA tests were performed on bovines that contributed to the milk pool in 34 herds, establishing a 100%concordance of indirect ELISA to detect seronegative farms. In the logistic regression analysis, a significant association (P < 0;05) was determined between seropositivity and factors such as: geographic location, extension of the farm, exploitation system, presence of other domestic species, elimination of placental remains, reproduction system, having a higher probability of seropositivity in herds that presented abortions (OR = 2;71), estrus problems (OR = 2;09), birth of weak calves (OR = 3;24) and extensive management (OR = 3;67). These findings constitute serological evidence that Brucella spp. circulates in farms in the area. [ABSTRACT FROM AUTHOR]

The photocatalyzed dearomative reaction between various electron‐deficient aromatic compounds and a non‐stabilized azomethine ylide is successfully performed in a flow system. Whereas the use of supported eosin as organic photocatalyst exhibits limited efficiency, turning to the soluble Rose Bengal allows to transform a broad range of substrates from hetarenes (indole, benzofuran, quinoline, pyridine) to naphthalenes and benzenes. This photocatalyzed (3+2) dearomative cycloaddition under green light irradiation provides a simple and efficient access to tridimensional pyrrolidino scaffolds with a tetrasubstituted carbon center at ring junction and can be performed in the friendly ethyl acetate. Computational studies support the mechanism involving azomethine ylide as reactive species toward the electron‐poor arene. [ABSTRACT FROM AUTHOR]

Brucellosis is a bacterial zoonosis worldwide and a potential health risk in Pakistan due to socio-economic reasons and lack of awareness, veterinary health and modern dairy-processing facilities. The aim of this study was to determine the burden of brucellosis in hospitalized patients of selected districts of Punjab, Pakistan. To this end, a total of 280 serum samples were collected from suspected patients in districts Lahore, Okara and Khushab between 2016 and 2018. Anti-Brucella antibodies were detected in 89 (31.8%) sera by Rose Bengal plate test (RBPT), and Brucella abortus DNA was amplified by polymerase chain reaction (PCR) in 42 (15%) samples. In univariable analysis, the seroprevalence varied significantly (p < 0.05) between districts with Lahore indicating 41/101 (40.6%) Odds ratio (OR) = 53.98 (7.22–403.67; 95% CI), Okara 47/99 (47.5%) OR = 71.4 (9.55–533.65; 95% CI) and Khushab 1/80 (1.3%) as reference. Similarly, exposure to aborted materials and a history of blood transfusion did associate significantly (p < 0.05), posing OR = 2.91 (1.58–5.36; 95% CI) and OR = 4.48 (2.56–7.84; 95% CI) risk. However, consumption of raw milk and history of blood transfusion did associate significantly (p < 0.05) in multivariable analysis indicating OR = 1.91 (1.09–3.34; 95% CI) and OR = 4.92 (2.76–8.75; 95% CI), respectively. The association of history of blood transfusion as a brucellosis risk factor underscores the need to create brucellosis awareness programs both at public and institutional levels in the medical and veterinary fields, as well as facilities and capacity building to delve deeper into the epidemiology of brucellosis in the country. Particular attention should be paid to chronically infected patients. Therefore, laboratory modernization, standardization and validation of the diagnostic tests, and staff trainings are required. Finally, pasteurization of the milk is recommended before consumption. [ABSTRACT FROM AUTHOR]

Binary copper oxides with different copper ion oxidation states including cuprous Cu2O and cupric CuO have already been successfully synthesized by the simple and highly repeatable grow-up technique from the modified copper Cu sheet. By controlling the annealing time and temperature, the copper oxide (CuO, Cu2O) composites were hierarchically formed on Cu surface. All obtained samples were characterized using X-ray diffraction (XRD) spectroscopy and scanning electron microscopy (SEM). The results showed that the modified Cu sheets after annealing in air yielded the mixture of CuO and Cu2O phases. The obtained Cu2O/CuO composites have been used as active photocatalysts to decolourize the 10 ppm dyes rose bengal solution with the degradation efficiency of 73% over a period of 3 h under UV-A irradiation after three uses. These results make them attractive as reusable photocatalytic materials in form of flat sheet. The other testing conditions as pH values and oxidant agent (H2O2) was carried out. It was observed that the photodegradation achieved up to 96% with the presence of H2O2. [ABSTRACT FROM AUTHOR]

Background: The present investigation planned to study the cardiovascular worries in Rose Bengal (RB) induced thrombotic rats by analysing biochemical profile of plasma, platelet membrane and cardiac tissue. Methods: Male Wistar rats were categorized into two groups. The group I was Control (C) rats and received glucose, whereas group II was Rose Bengal (50 mg/kg) induced thrombotic rats. The animals sacrificed and biological samples collected were analysed for various biochemical parameters. Results: In rats RB induced heart damage/thrombosis showed significantly increased levels of lipid peroxidation (LPO), nitrate and nitrite. In RB administered group the antioxidant activities were lowered significantly i.e., reduced glutathione, glutathione S-transferase, glutathione peroxidase, superoxide dismutase and catalase when compared with control rats. Plasma enzymes SGOT, SGPT were decreased and Na+-K+ ATPase was significantly increased in group II in comparison with group I. There is no significant change in plasma hexokinase enzyme in RB administered rats when compared with control rats. The non-enzymatic and enzymatic antioxidants levels were decreased significantly in experimental groups II to compare with control group I rats. A significant increase in platelet membrane fluidity observed in group II rats when compared with group I rats in DPH and pyrene employed method. A significant raise in LPO of platelet membrane was observed in the experimental rats. Plasma nitrite and nitrate levels were increased in group II when compared to group I. Furthermore, the haematological parameters were also increased in group II when compared to group I rats. Conclusion: This investigation pointed out that the nitric oxide scavenging levels increased and might be protected the oxidative stress and free radicals generated by RB induced cardiac thrombosis in rats.

Brucella is one of the most common bacterial zoonosis. Crimean-Congo Hemorrhagic Fever (CCHF) is a potentially life-threatening infection. They have similar epidemiologic and clinical presentations. A 40-year-old male patient, engaged in animal husbandry, presented to the emergency unit with complaints of weakness, headache, and fever. Because of his low platelet count, he was referred to the internal medicine clinic. The patient did not have a history of contact with a tick or a CCHF patient. The Brucella Rose Bengal Test (RBT) was performed and the result was positive. After he was referred to the infectious diseases clinic, the CCHF RT-PCR test was found to be positive and the Brucella Wright agglutination test was negative. The patient, who was diagnosed with CCHF, was discharged in good condition. A positive RBT result does not always make a definitive diagnosis of Brucella infection. In areas where CCHF and Brucella are endemic, CCHF should be considered even if there is no history of ticks.

To solve the problem of water pollution, using environment friendly and cost effective method in short time is the need of hour. In this work, chromium (Cr) and nitrogen (N) co-doped TiO2 nanoparticles were synthesized and were used for the photocatalytic degradation of dyes under visible light. The synergistic effect of metal and non-metal co-dopants added would result in appropriate reduction of band gap {from 3.2 eV of TiO2 to 2.67 eV}, decrease in recombination rate of charge carriers by trapping electrons and holes, and in better light harvesting capacity. Nanoparticles were synthesized by sol–gel method and characterized using ultraviolet–visible (UV–VIS) spectroscopy, fourier transform infrared (FTIR) spectroscopy, atomic force microscopy (AFM), zeta potential, X-ray diffraction (XRD), Brunauer–Emmett–Teller (BET) analysis, field emission scanning electron microscopy (FE-SEM), and RAMAN spectroscopy. Eosin yellow (EY) and rose bengal (RB) were subjected to photocatalytic degradation under solar light to check the photocatalytic activity of the synthesized nanoparticles. Effects of dye concentration, the concentration of nanoparticles, time, and pH were investigated to optimize the parameters. The results obtained were remarkable for 20 ppm EY solution took 10 min using 1 gL−1 NPs at pH 3 and 10 ppm RB solution took 5 min using 0.75 gL−1 NPs at pH 5.78 (original pH) for complete degradation. Kinetics studies were also performed and both dyes followed pseudo-second-order kinetics with R2 values 0.99312 and 0.99712 for EY and RB, respectively. The study of degraded products was conducted using high-performance liquid chromatography (HPLC) hyphenated with electron spray ionization mass spectroscopy (ESI–MS) (LC–MS) and possible degradation pathways were made for both dyes. A reusability test was also performed showing the efficiency of the particles was up to 88% after 3 cycles of use. These notable results can be attributed to the efficient removal of organic pollutants using the proposed dopants in this study. [ABSTRACT FROM AUTHOR]

Background: Vaccination is the most fundamental strategy in the control and eradication of brucellosis. Several vaccination programs with different vaccines have been carried out in many countries in which brucellosis continues to be a problem in livestock. One of the recommended vaccines against brucellosis in cattle is the live Brucella abortus S19 vaccine. The aim of this study is to evaluate the results of field safety and efficacy trials for the conjunctival Brucella abortus S19 vaccine prior to the mass vaccination program. Methods: In this study, 81 female cattle were vaccinated with a reduced dose of Brucella abortus S19 vaccine with the conjunctival route. The immune response after vaccination was investigated by suggested serological tests; namely, Rose Bengal Plate Test, Serum Agglutination Test and Complement Fixation Test. Result: No adverse effect was observed within the scope of safety. Isolation of vaccine strain was observed only in a milk sample of lactating animals. Excluding the diagnosis criteria of the serological tests, humoral immune response was observed in most of the animals by all the serological tests one month after vaccination. Antibody levels lasted approximately 4 months after vaccination. In conclusion, the results of this study demonstrated that besides vaccine-induced antibodies, the vaccine including changes in dose and administration way in this study did not cause any significant risks for the target animals. [ABSTRACT FROM AUTHOR]