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ABSTRACT Sarcoidosis is a multisystem granulomatous disease characterized by epithelioid noncaseating granulomas associated with clinical and radiologic findings. The cause of this disease is still uncertain. Sarcoidosis affects mostly lungs and lymph nodes and is not usually considered a urological disease, therefore, this etiology may be overlooked in several urological disorders, such as hypercalcemia, hypercalciuria and nephrolithiasis. It affects all races and genders. This review aims to describe the urological manifestations of sarcoidosis and to elucidate how the disease may affect the management of numerous urological conditions.

1. Heat shock proteins (HSPs) are highly conserved proteins, shown to protect organisms against physical and physiological stress. 2. TEX-OE®is a patented total extract of the fruit ofOpuntia ficus indica, which has been demonstrated to accelerate the development of HSPs in several animal species. 3. One-day-old commercial broiler chicks were treated with TEX-OE®; HSP was measured by enzyme-linked immunosorbent assay (ELISA), and a large commercial field trial investigated key performance indicators (KPIs) in treated versus untreated controls chicks. 4. TEX-OE®significantly increased HSP concentrations in treated chicks versus controls. Final cumulative mortality, liveweight and percentage factory-rejects were better than in controls. 5. The accelerated HSP response may enable chicks to cope with early stressors, which is reflected in improved KPIs. [ABSTRACT FROM AUTHOR]

Porcine delta-coronavirus (PDCoV) spillovers were recently detected in febrile children, underscoring the recurrent zoonoses of divergent CoVs. To date, no vaccines or specific therapeutics are approved for use in humans against PDCoV. To prepare for possible future PDCoV epidemics, we isolated PDCoV spike (S)-directed monoclonal antibodies (mAbs) from humanized mice and found that two, designated PD33 and PD41, broadly neutralized a panel of PDCoV variants. Cryoelectron microscopy (cryo-EM) structures of PD33 and PD41 in complex with the S receptor-binding domain (RBD) and ectodomain trimer revealed the epitopes recognized by these mAbs, rationalizing their broad inhibitory activity. We show that both mAbs competitively interfere with host aminopeptidase N binding to neutralize PDCoV and used deep-mutational scanning epitope mapping to associate RBD antigenic sites with mAb-mediated neutralization potency. Our results indicate a PD33-PD41 mAb cocktail may heighten the barrier to escape. PD33 and PD41 are candidates for clinical advancement against future PDCoV outbreaks., Competing Interests: Declaration of interests D.V. is named as inventor on patents for CoV nanoparticle vaccines filed by the University of Washington. D.C., L.P., A.D., K.C., C.S., A.B., and F.B. are employees of Vir Biotechnology and may hold shares in Vir Biotechnology., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) evolution has resulted in viral escape from clinically authorized monoclonal antibodies (mAbs), creating a need for mAbs that are resilient to epitope diversification. Broadly neutralizing coronavirus mAbs that are sufficiently potent for clinical development and retain activity despite viral evolution remain elusive. We identified a human mAb, designated VIR-7229, which targets the viral receptor-binding motif (RBM) with unprecedented cross-reactivity to all sarbecovirus clades, including non-ACE2-utilizing bat sarbecoviruses, while potently neutralizing SARS-CoV-2 variants since 2019, including the recent EG.5, BA.2.86, and JN.1. VIR-7229 tolerates extraordinary epitope variability, partly attributed to its high binding affinity, receptor molecular mimicry, and interactions with RBM backbone atoms. Consequently, VIR-7229 features a high barrier for selection of escape mutants, which are rare and associated with reduced viral fitness, underscoring its potential to be resilient to future viral evolution. VIR-7229 is a strong candidate to become a next-generation medicine., Competing Interests: Declaration of interests L.E.R., A.D.M., D.P., D.B., T.R., J.M.E., K.H., H.V.D., M.G., G.C., C.S., F.Z., E.D., A.R., J.N., Q.T., Y.D., B.T., R.A., S.S., B.G., M.A.S., G. Schnell, J.L.M., F.A.L., N.C., E.C., L.A.P., F.B., J.d.I., M.S.P., A.L., A.T., G. Snell, and D.C. are current or previous employees of Vir Biotechnology and may hold shares in Vir Biotechnology. L.E.R., A.D.M., D.P., E.C., F.B., M.S.P., G. Snell, and D.C. are currently listed as inventors on multiple patent applications that disclose the subject matter described in this paper. J.W.C. is an employee and shareholder of ProtaBody. J.W.C. and ProtaBody have received funding from Vir Biotechnology related to the work described in this paper. I.Z., Z.L., S.P.J.W., G.D.d.M., L.K., H.B., and T.N.S. have received funding through sponsored research awards to their respective institutions from Vir Biotechnology related to the work described in this paper. I.Z. is a current employee of Bristol Myers Squibb. L.A.P. is a former employee and shareholder of Regeneron Pharmaceuticals and is a member of the Scientific Advisory Board AI-driven structure-enabled antiviral platform (ASAP). Regeneron provided no funding for this work. L.A.P. is a current employee of Third Rock Ventures. D.V. is named as inventor on patents for coronavirus vaccines filed by the University of Washington. The lab of T.N.S. has received sponsored research agreements unrelated to the present work from Aerium Therapeutics, Inc. and Invivyd, Inc., (Copyright © 2024 The Author(s). Published by Elsevier Inc. All rights reserved.)

Objectives: To assess the prevalence of non-utilization of dental care in Lebanon and associated socioeconomic factors and self-care behaviours., Methods: A nationwide, quantitative, survey-based study was conducted by trained interviewers with Lebanese residents aged ≥18 years between July and September 2019. Univariate analyses were performed using Pearson Chi Square test or the Fisher's exact test followed by a binary logistic regression using the SPSS Version 25., Results: Of the 1070 participants, 247 (23.1%) did not utilise any type of healthcare and 144/247 (58.3%) did not utilise dental care. The prevalence of non-utilization of dental care was estimated at 13.5%. Only 4.7% of the respondents consulted their dentist in the past year, among which 53% cited pain/emergencies as the reason for their consultation. Socioeconomic factors associated with the non-utilization of dental care were lack of social medical insurance (OR, 0.49 [95% CI, 0.31 to 0.79]) and long waiting time/patient time restriction (OR, 2.05 [95% CI, 1.26 to 3.35]). On the other hand, facilitators for utilization of dental care included ethical standards/personal qualities of the dentist (OR, 0.53 [95% CI, 0.32 to 0.88]) and convenient cost with respect to the individual's economic status (OR, 0.28 [95% CI, 0.18 to 0.43])., Conclusion: This study suggests that dental care practices in Lebanon, including the non-utilization of dental care, are suboptimal. Measures such as reducing sugar and tobacco consumption, providing information on oral hygiene, and using fluoride products are inexpensive; however, implementing these measures may take substantial time and input by multiple stakeholders., (© 2024 The Author(s). Community Dentistry and Oral Epidemiology published by John Wiley & Sons Ltd.)

Ileocolic intussusception is a consideration in young pediatric patients with acute abdominal pain. Meckel's diverticulum is the most common pathologic lead point for intussusception in children and the appendix acting as the lead point is rare. In addition, management guidelines for recurrent ileocolic intussusception (RICI) are lacking. We present two cases of RICI in which the pathological lead point was the appendix. The first patient, a two-year-old with no medical history, had intermittent abdominal pain and non-bloody vomiting for a month. Ultrasound revealed ileocolic intussusception, successfully managed with pneumatic reduction. However, symptoms recurred and a repeat ultrasound showed partial intussusception of the appendix into the cecum. Laparoscopic reduction and appendectomy were then performed. Symptomatic intussusception recurred, and a second laparoscopic reduction with stump appendectomy resolved all symptoms. The second patient, a three-year-old with no medical history, had colicky abdominal pain for 24 hours. Ultrasound revealed ileocolic intussusception that was pneumatically reduced. As pain recurred, laparoscopic reduction and appendectomy were performed, revealing ileocolic intussusception with a dilated appendix as the pathologic lead point. Recurrent ileocolic intussusception (RICI) with the appendix as the lead point is common, but RICI with the appendix as the lead point is rare. These cases demonstrate the role of the appendix as a pathologic lead point, and a review of the literature supports the need for surgical reduction. While enema reduction is the first line for recurrent intussusception, surgical reduction is preferred when a pathological lead point is suspected., Competing Interests: The authors have declared that no competing interests exist., (Copyright © 2024, Peramsetty et al.)

Introduction: According to Lebanese official data, Lebanon hosts over 1.5 million displaced Syrians (DS). Research shows that migrants encounter barriers when accessing healthcare. The social determinants of health (SDOH) related to migration are an additional challenge for DS in Lebanon, though bias plays a significant factor in exacerbating health inequalities. This study aims to identify DS perception of healthcare biases in the Lebanese healthcare system, and its consequences on DS' accessing and receiving quality healthcare in Lebanon., Methods: A qualitative analysis using in-depth, semi-structured interviews was utilized. 28 semi-structured interviews were conducted with doctors ( n  = 12) and nurses ( n  = 16) in 2021. Six group interviews were conducted with DS ( n  = 22) in Lebanese healthcare facilities. The recruitment of participants relied on reasoned and targeted sampling. Thematic analysis was performed to identify common themes in participants' experiences with DS accessing Lebanese healthcare., Results: The findings indicated that there were barriers to accessing healthcare related to the SDOH, such as transportation and financial resources. The results also suggested that DS perceived health biases, including discriminatory behavior from Lebanese healthcare providers, stereotypes and racism leading to health inequalities., Conclusion: Based on the perceptions and experiences reported by participants, the underlying causes of biases are due to the fragility of the Lebanese healthcare system when facing a humanitarian crisis as well as a collapsing infrastructure torn by past wars and the current socio-political and financial crises in the country. Global initiatives are required to provide the necessary resources needed for offering equitable health services. Such initiatives involve addressing biases, health inequities, discrimination, and the lack of a Lebanese infrastructure system for the provision of healthcare. Addressing health inequalities remains a major health objective in achieving health equity on the micro level (cultural awareness and competencies) and macro level (equitable distribution of resources, implementation of a universal health coverage) in order to guarantee quality healthcare services to DS., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2023 Khalifeh, D'Hoore, Saliba, Salameh and Dauvrin.)

Background: Semen cryopreservation is a widely used procedure for fertility preservation, despite some level of cryodamage that may occur in spermatozoa after thawing. However, there is some evidence that lactobacilli, one of the bacteria found in semen, might benefit sperm quality., Objectives: This study aims to determine whether the addition of Lactobacillus plantarum secretions to sperm freezing medium has an impact on sperm motility, morphology, and DNA fragmentation., Materials and Methods: This is a prospective auto-controlled study. It was conducted on 30 raw semen samples from 30 infertile men attending a fertility center for semen analysis. Before freezing, all the samples were analyzed for motility, morphology, and DNA fragmentation percentages. Each sample was then divided equally into three aliquots. Cryopreservation was performed on each aliquot using one of the following three media: without Lactobacillus plantarum secretions (control group) or with 10 7 or 10 8 colony-forming units/mL Lactobacillus plantarum secretions. Sperm motility, morphology, and DNA integrity were evaluated after the cryopreservation media were added and after semen thawing., Results: The results of this study indicated that after thawing, no statistically significant decrease in progressive motility and non-progressive percentages were detected in the sperm freezing medium supplemented with 10 8 colony-forming units/mL Lactobacillus plantarum secretions than the fresh raw semen. Moreover, multivariate linear regression model analyses showed that the progressive motility (p = 0.02), non-progressive motility (p = 0.016), and non-motile spermatozoa (p = 0.012) percentages were significantly decreased in the freezing medium (without Lactobacillus plantarum secretions) compared to the fresh raw semen., Discussion and Conclusion: To the best of our knowledge, this is the first study showing that Lactobacillus plantarum secretions had a cryoprotective effect on sperm motility when added to the sperm freezing medium. Furthermore, Lactobacillus plantarum secretions were found to protect sperm DNA integrity more effectively than the freezing medium without Lactobacillus plantarum secretions in non-normozoospermia group. Cryopreservation procedures must therefore be optimized to minimize any iatrogenically induced sperm DNA damage, given the correlation between sperm DNA damage and increased mutation loads in progeny., (© 2023 American Society of Andrology and European Academy of Andrology.)

Currently circulating SARS-CoV-2 variants have acquired convergent mutations at hot spots in the receptor-binding domain 1 (RBD) of the spike protein. The effects of these mutations on viral infection and transmission and the efficacy of vaccines and therapies remains poorly understood. Here we demonstrate that recently emerged BQ.1.1 and XBB.1.5 variants bind host ACE2 with high affinity and promote membrane fusion more efficiently than earlier Omicron variants. Structures of the BQ.1.1, XBB.1 and BN.1 RBDs bound to the fragment antigen-binding region of the S309 antibody (the parent antibody for sotrovimab) and human ACE2 explain the preservation of antibody binding through conformational selection, altered ACE2 recognition and immune evasion. We show that sotrovimab binds avidly to all Omicron variants, promotes Fc-dependent effector functions and protects mice challenged with BQ.1.1 and hamsters challenged with XBB.1.5. Vaccine-elicited human plasma antibodies cross-react with and trigger effector functions against current Omicron variants, despite a reduced neutralizing activity, suggesting a mechanism of protection against disease, exemplified by S309. Cross-reactive RBD-directed human memory B cells remained dominant even after two exposures to Omicron spikes, underscoring the role of persistent immune imprinting., (© 2023. The Author(s).)

It is not currently possible to directly and noninvasively measure in vivo patellofemoral joint contact force during dynamic movement; therefore, indirect methods are required. Simple models may be inaccurate because patellofemoral contact forces vary for the same knee flexion angle, and the patellofemoral joint has substantial out-of-plane motion. More sophisticated models use 3-dimensional kinematics and kinetics coupled to a subject-specific anatomical model to predict contact forces; however, these models are time consuming and expensive. We applied a principal component analysis prediction and regression method to predict patellofemoral joint contact forces derived from a robust musculoskeletal model using exclusively optical motion capture kinematics (external approach), and with both patellofemoral and optical motion capture kinematics (internal approach). We tested this on a heterogeneous population of asymptomatic subjects (n = 8) during ground-level walking (n = 12). We developed equations that successfully capture subject-specific gait characteristics with the internal approach outperforming the external. These approaches were compared with a knee-flexion based model in literature (Brechter model). Both outperformed the Brechter model in interquartile range, limits of agreement, and the coefficient of determination. The equations generated by these approaches are less computationally demanding than a musculoskeletal model and may act as an effective tool in future rapid gait analysis and biofeedback applications.

The study aims to examine cultural differences and discrimination as difficulties encountered by DS when using the Lebanese healthcare system, and to evaluate the equity of DS access to health services in Lebanon. This is a qualitative study using in-depth semi-structured interviews with DS and Lebanese healthcare professionals. The participants were selected by visiting two hospitals, one public Primary Healthcare Center, and three PHCs managed by Non-Governmental Organizations. The recruitment of participants was based on reasoned and targeted sampling. Thematic analysis was performed to identify common themes in participants' experiences of DS in accessing Lebanese healthcare. Twenty interviews took place with directors of health facilities ( n = 5), health professionals ( n = 9), and DS ( n = 6) in six different Lebanese healthcare institutions. The results showed barriers of access to care related to transportation and financial issues. Healthcare services provided to the DS appear to be of poor quality due to inequitable access to the health system, attributable to the discriminatory behavior of healthcare providers. Among the several factors contributing to the presence of discrimination in the Lebanese healthcare system, the persisting fragility of the healthcare system-facing a humanitarian crisis-emerged as the major driver of such unequal treatment. The number of DS in Lebanon is roughly equal to a quarter of its citizens; there is an urging need to restore the Lebanese health system to ensure the equitable provision of health services for DS and appropriate working conditions for health professionals.

Memory B cells (MBCs) generate rapid antibody responses upon secondary encounter with a pathogen. Here, we investigated the kinetics, avidity, and cross-reactivity of serum antibodies and MBCs in 155 SARS-CoV-2 infected and vaccinated individuals over a 16-month time frame. SARS-CoV-2-specific MBCs and serum antibodies reached steady-state titers with comparable kinetics in infected and vaccinated individuals. Whereas MBCs of infected individuals targeted both prefusion and postfusion Spike (S), most vaccine-elicited MBCs were specific for prefusion S, consistent with the use of prefusion-stabilized S in mRNA vaccines. Furthermore, a large fraction of MBCs recognizing postfusion S cross-reacted with human betacoronaviruses. The avidity of MBC-derived and serum antibodies increased over time resulting in enhanced resilience to viral escape by SARS-CoV-2 variants, including Omicron BA.1 and BA.2 sublineages, albeit only partially for BA.4 and BA.5 sublineages. Overall, the maturation of high-affinity and broadly reactive MBCs provides the basis for effective recall responses to future SARS-CoV-2 variants., Competing Interests: R.M., J.B., C.S.-F., I.B., F.M., K.C., N.S., G.L., C.S., E.C., E.A.D.J., J.R.D., N.C., C.H.-D., A.T., A.A., H.W.V., A.L., D.C., and L.Pi. are or were employees of Vir Biotechnology Inc. and may hold shares in Vir Biotechnology Inc. C.G. is an external scientific consultant to Humabs BioMed SA. The other authors declare no competing interests., (© 2022 The Authors.)