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Hoy — Abril 19th 2024Tus fuentes RSS

The role of orthobiologics in chronic wound healing

Abstract

Chronic wounds, characterized by prolonged healing processes, pose a significant medical challenge with multifaceted aetiologies, including local and systemic factors. Here, it explores the complex pathogenesis of chronic wounds, emphasizing the disruption in the normal phases of wound healing, particularly the inflammatory phase, leading to an imbalance in extracellular matrix (ECM) dynamics and persistent inflammation. Senescent cell populations further contribute to impaired wound healing in chronic lesions. Traditional medical management focuses on addressing underlying causes, but many chronic wounds resist to conventional treatments, necessitating innovative approaches. Recent attention has turned to autologous orthobiologics, such as platelet-rich plasma (PRP), platelet-rich fibrin (PRF) and mesenchymal stem cells (MSCs), as potential regenerative interventions. These biologically derived materials, including bone marrow aspirate/concentrate (BMA/BMAC) and adipose tissue-derived stem cells (ADSCs), exhibit promising cytokine content and regenerative potential. MSCs, in particular, have emerged as key players in wound healing, influencing inflammation and promoting tissue regeneration. This paper reviews relevant scientific literature regarding basic science and brings real-world evidence regarding the use of orthobiologics in the treatment of chronic wounds, irrespective of aetiology. The discussion highlights the regenerative properties of PRP, PRF, BMA, BMAC and SVF, showcasing their potential to enhance wound healing. Despite advancements, further research is essential to elucidate the specific roles of each orthobiologic and determine optimal applications for different wound types. The conclusion underscores the evolving landscape in chronic wound management, with a call for more comprehensive studies to refine treatment strategies and maximize the benefits of regenerative medicine.

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Cuerpos desgener[iz]ados:

Introducción: La intersexualidad comprende condiciones infrecuentes donde una persona nace con una anatomía sexual diferente del binario hombre-mujer; esto supone habitar un cuerpo fuera de lo inteligible y estigmatizado. Históricamente, desde la heteronorma, el modelo biomédico ha buscado normalizarles quirúrgicamente para asignar precoz y arbitrariamente un sexo-género armónico con la genitalidad. Desde los Derechos Humanos, estas prácticas son cuestionadas por colectivos Intersex. Materiales y método: Estudio de caso, entre años 2019 y 2020; técnica de entrevista en profundidad a dos usuarios adultos de los Policlínicos de Urología y Endocrinología de un hospital público en Santiago, Chile; se utilizó la fenomenología de Husserl para comprender la experiencia en el sistema de salud de las personas intersex. El análisis de la información se basó en la propuesta de Colaizzi. Resultados: se reconocieron unidades de significado principales e imbricadas, cuyas esencias permitieron describir el fenómeno de: ser niño y habitar el espacio hospitalario, vivir con la condición actualmente, y la experiencia de utilizar el sistema de salud siendo adulto. Conclusiones: se identificaron diversas estrategias de agencia tanto en el espacio hospitalario como el cotidiano, mediante un proceso personal y silencioso de aprendizajes sobre las implicancias de ser intersexual.

Multicentre, randomised, double-blind, placebo-controlled, proof of concept study of LSALT peptide as prevention of acute respiratory distress syndrome and acute kidney injury in patients infected with SARS-CoV-2 (COVID-19)

Por: Somayaji · R. · Luke · D. R. · Lau · A. · Guner · R. · Tabak · O. F. · Hepokoski · M. · Gardetto · N. · Conrad · S. A. · Kumar · S. D. · Ghosh · K. · Robbins · S. M. · Senger · D. L. · Sun · D. · Lim · R. K. S. · Liu · J. · Eser · F. · Karaali · R. · Tremblay · A. · Muruve · D.
Objective

Dipeptidase-1 (DPEP-1) is a recently discovered leucocyte adhesion receptor for neutrophils and monocytes in the lungs and kidneys and serves as a potential therapeutic target to attenuate inflammation in moderate-to-severe COVID-19. We aimed to evaluate the safety and efficacy of the DPEP-1 inhibitor, LSALT peptide, to prevent specific organ dysfunction in patients hospitalised with COVID-19.

Design

Phase 2a randomised, placebo-controlled, double-blinded, trial.

Setting

Hospitals in Canada, Turkey and the USA.

Participants

A total of 61 subjects with moderate-to-severe COVID-19.

Interventions

Randomisation to LSALT peptide 5 mg intravenously daily or placebo for up to 14 days.

Primary and secondary outcome measures

The primary endpoint was the proportion of subjects alive and free of respiratory failure and/or the need for renal replacement therapy (RRT). Numerous secondary and exploratory endpoints were assessed including ventilation-free days, and changes in kidney function or serum biomarkers.

Results

At 28 days, 27 (90.3%) and 28 (93.3%) of subjects in the placebo and LSALT groups were free of respiratory failure and the need for RRT (p=0.86). On days 14 and 28, the number of patients still requiring more intensive respiratory support (O2 ≥6 L/minute, non-invasive or invasive mechanical ventilation or extracorporeal membrane oxygenation) was 6 (19.4%) and 3 (9.7%) in the placebo group versus 2 (6.7%) and 2 (6.7%) in the LSALT group, respectively (p=0.14; p=0.67). Unadjusted analysis of ventilation-free days demonstrated 22.8 days for the LSALT group compared with 20.9 in the placebo group (p=0.4). LSALT-treated subjects had a significant reduction in the fold expression from baseline to end of treatment of serum CXCL10 compared with placebo (p=0.02). Treatment-emergent adverse events were similar between groups.

Conclusion

In a Phase 2 study, LSALT peptide was demonstrated to be safe and tolerated in patients hospitalised with moderate-to-severe COVID-19.

Trial registration number

NCT04402957.

Students perceptions and experiences of an online well-being programme: a phenomenological study protocol

Por: Escuadra · C. J. · Chiong Maya · A. · Nava · J. B. P. · Vergara · J. A. · Bea · T. C. · Javier · A. M. · Karamihan · F. · Padilla · D. P. · Reyes · A. J. · Samonte · J. · Serrano · S. I.
Background

The pandemic has ensued challenges across all sections of the human population such as livelihood and educational changes, which involve the abrupt shift to online learning, immensely affecting the students’ well-being. Negative health consequences of e-learning among students stem from the increased demand for new technological skills, productivity, information overload and restriction of students to spend time with their peers.

Objective

To explore the experiences of the students from the University of Santo Tomas—College of Rehabilitation Sciences (UST-CRS) who participated in the online well-being programme.

Methodology

A phenomenological design will be used to determine the participants’ perceptions and experiences. Purposive sampling will be used to recruit 8–10 undergraduate students from UST-CRS ages 18–22 years, who participated in the well-being programme, and completed the study’s quantitative counterpart. Semistructured, in-depth questions will be used to conduct a focus group discussion. The transcripts will be analysed using thematic analysis via the NVivo V.12 software.

Ethics and dissemination

The study protocol is approved by the UST-CRS Ethical Review Committee (Protocol Number: SI-2022–034 (V.4)). It will be implemented in accordance with the Declaration of Helsinki and the National Ethical Guidelines for Health and Health-Related Research, and Data Privacy Act. Findings will be published in accredited journals and presented in related scientific fora.

Registration ID

PHRR230214-005419; Philippine Health Research Registry.

Understanding nurses' experience of climate change and then climate action in Western Canada

Abstract

Aim

To understand nurses' personal and professional experiences with the heat dome, drought and forest fires of 2021 and how those events impacted their perspectives on climate action.

Design

A naturalistic inquiry using qualitative description.

Method

Twelve nurses from the interior of British Columbia, Canada, were interviewed using a semi-structured interview guide. Thematic analysis was employed. No patient or public involvement.

Results

Data analysis yielded three themes to describe nurses' perspective on climate change: health impacts; climate action and system influences. These experiences contributed to nurses' beliefs about climate change, how to take climate action in their personal lives and their challenges enacting climate action in their workplace settings.

Conclusions

Nurses' challenges with enacting environmentally responsible practices in their workplace highlight the need for engagement throughout institutions in supporting environmentally friendly initiatives.

Impact

The importance of system-level changes in healthcare institutions for planetary health.

Association between long COVID and vaccination: A 12-month follow-up study in a low- to middle-income country

by Samar Fatima, Madiha Ismail, Taymmia Ejaz, Zarnain Shah, Summaya Fatima, Mohammad Shahzaib, Hassan Masood Jafri

Objective

There is a lack of estimates regarding the at-risk population associated with long COVID in Pakistan due to the absence of prospective longitudinal studies. This study aimed to determine the prevalence of long COVID and its association with disease severity and vaccination status of the patient.

Design and data sources

This prospective cohort study was conducted at the Aga Khan University Hospital and recruited patients aged > 18 years who were admitted between February 1 and June 7, 2021. During this time, 901 individuals were admitted, after excluding patients with missing data, a total of 481 confirmed cases were enrolled.

Results

The mean age of the study population was 56.9±14.3 years. Among patients with known vaccination status (n = 474), 19%(n = 90) and 19.2%(n = 91) were fully and partially vaccinated, respectively. Severe/critical disease was present in 64%(n = 312). The mortality rate following discharge was 4.58%(n = 22). Around 18.9%(n = 91) of the population required readmission to the hospital, with respiratory failure (31.8%, n = 29) as the leading cause. Long COVID symptoms were present in 29.9%(n = 144), and these symptoms were more prevalent in the severe/critical (35.5%, n = 111) and unvaccinated (37.9%, n = 105) cohort. The most prominent symptoms were fatigue (26.2%, n = 126) and shortness of breath (24.1%, n = 116), followed by cough (15.2%, n = 73). Vaccinated as compared to unvaccinated patients had lower readmissions (13.8% vs. 21.51%) and post-COVID pulmonary complications (15.4% vs. 24.2%). On multivariable analysis, after adjusting for age, gender, co-morbidity, and disease severity, lack of vaccination was found to be an independent predictor of long COVID with an Odds ratio of 2.42(95% CI 1.52–3.84). Fully and partially vaccinated patients had 62% and 56% reduced risk of developing long COVID respectively.

Conclusions

This study reports that the patients continued to have debilitating symptoms related to long COVID, one year after discharge, and most of its effects were observed in patients with severe/critical disease and unvaccinated patients.

Linking abusive supervision to service sabotage through work alienation in nurses: A cross‐sectional study

Abstract

Background

Abusive supervision has detrimental effects on nurses, but the mechanisms connecting abusive supervision to negative outcomes for nurses have not been well-established in the nursing literature.

Aim

This study aimed to investigate whether work alienation mediates the relationship between abusive supervision and nurses' service sabotage.

Methods

This descriptive cross-sectional study was conducted from November to December 2021 with 204 nurses working at a teaching hospital in Damanhour, Egypt. Data were collected using a demographic information form, the Abusive Supervision Scale, the Work Alienation Scale and the Service Sabotage Scale. Study hypotheses were evaluated using structural equation modelling.

Results

Our findings revealed a significant association between abusive supervision, work alienation, and service sabotage among nurses. Abusive supervision was found to be linked to nurses' service sabotage through work alienation.

Conclusion

Our study suggests that nurses who are subject to abusive supervision are more likely to feel alienated, which increases the probability of them engaging in behaviours that have a negative impact on the quality of care they provide.

Patient or Public Contribution

No patient or public contribution.

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