scholarly journals Rab11 negatively regulates Wingless preventing JNK mediated apoptosis inDrosophilaepithelium during embryonic dorsal closure

2021 ◽  
Author(s):  
Nabarun Nandy ◽  
Jagat Kumar Roy
Keyword(s):  
Wound Healing ◽  
Epithelial Cells ◽  
Signaling Pathways ◽  
Healing Process ◽  
Ectopic Expression ◽  
Wound Healing Process ◽  
Dorsal Closure ◽  
Loss Of Function ◽  
Upstream Regulator ◽  
Conserved Gene

AbstractCell signaling pathways involved in epithelial wound healing, show a lot of complexities when it comes to their regulation. Remarkably, a large proportion of these signaling pathways are triggered at the time of morphogenetic events which usually involve epithelial sheet fusions during embryonic development, such as the event of dorsal cloure in Drosophila embryos. One such conserved pathway in the wound healing process is the JNK-Dpp signaling pathway. Recent observations suggest that one such upstream regulator of JNK mediated apoptosis could be Rab11, a small Ras like GTPase, which is functionally associated with the membrane and cortical cytoskeletal organization of epithelial cells. UsingDrosophilaembryonic dorsal closure as a model of wound healing, we observed that a targeted expression of aRab11loss of function mutant in the dorso-lateral epidermis of fly embryos (tissue which extends contra-laterally in order to fill the intervening gap) undergoing dorsal closure leads to an ectopic expression of Caspase-3 and a concomitant up-regulation of the JNK-Dpp signaling. This resulted in the death of the dorso-lateral epithelial cells with a consequent embryonic lethality due to dorsal closure defects. Interestingly, a simultaneous knockdown ofwingless(another developmentally conserved gene) inRab11mutants resulted in a rescue of the lethal phenotype and also a significant level of successful completion of the dorsal closure process. In our experiments we suggest Rab11 could promote cross talk between the JNK-Dpp pathway and the canonicalwinglesspathway in the regulation of apoptosis in the dorsolateral epithelium of fly embryos undergoing dorsal closure.One Sentence SummaryRab11 functions through a conserved Wingless mediated JNK-Dpp pathway during embryonic dorsal closure.

scholarly journals Macrophage-associated wound healing contributes to African green monkey SIV pathogenesis control

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Fredrik Barrenas ◽  
Kevin Raehtz ◽  
Cuiling Xu ◽  
Lynn Law ◽  
Richard R. Green ◽  
...  
Keyword(s):  
Wound Healing ◽  
Expression Profiles ◽  
Healing Process ◽  
Gene Expression Profiles ◽  
Gene Signature ◽  
African Green Monkey ◽  
Wound Healing Process ◽  
Sequencing Data ◽  
Green Monkey ◽  
Conserved Gene

Abstract Natural hosts of simian immunodeficiency virus (SIV) avoid AIDS despite lifelong infection. Here, we examined how this outcome is achieved by comparing a natural SIV host, African green monkey (AGM) to an AIDS susceptible species, rhesus macaque (RM). To asses gene expression profiles from acutely SIV infected AGMs and RMs, we developed a systems biology approach termed Conserved Gene Signature Analysis (CGSA), which compared RNA sequencing data from rectal AGM and RM tissues to various other species. We found that AGMs rapidly activate, and then maintain, evolutionarily conserved regenerative wound healing mechanisms in mucosal tissue. The wound healing protein fibronectin shows distinct tissue distribution and abundance kinetics in AGMs. Furthermore, AGM monocytes exhibit an embryonic development and repair/regeneration signature featuring TGF-β and concomitant reduced expression of inflammatory genes compared to RMs. This regenerative wound healing process likely preserves mucosal integrity and prevents inflammatory insults that underlie immune exhaustion in RMs.

scholarly journals The emerging roles of neutrophil extracellular traps in wound healing

2021 ◽  
Vol 12 (11) ◽  
Author(s):  
Shuainan Zhu ◽  
Ying Yu ◽  
Yun Ren ◽  
Liying Xu ◽  
Huilin Wang ◽  
...  
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Neutrophil Extracellular Traps ◽  
Neutrophil Extracellular Trap ◽  
Wound Healing Process ◽  
Loss Of Function ◽  
Delayed Wound Healing ◽  
Wound Site ◽  
Extracellular Traps ◽  
Extracellular Trap

AbstractDelayed wound healing causes problems for many patients both physically and psychologically, contributing to pain, economic burden, loss of function, and even amputation. Although many factors affect the wound healing process, abnormally prolonged or augmented inflammation in the wound site is a common cause of poor wound healing. Excessive neutrophil extracellular trap (NET) formation during this phase may amplify inflammation and hinder wound healing. However, the roles of NETs in wound healing are still unclear. Herein, we briefly introduce NET formation and discuss the possible NET-related mechanisms in wound healing. We conclude with a discussion of current studies, focusing on the roles of NETs in diabetic and normoglycemic wounds and the effectiveness of NET-targeting treatments in wound healing.

scholarly journals Bicellular Tight Junctions and Wound Healing

2018 ◽  
Vol 19 (12) ◽  
pp. 3862 ◽  
Author(s):  
Junhe Shi ◽  
May Barakat ◽  
Dandan Chen ◽  
Lin Chen
Keyword(s):  
Wound Healing ◽  
Endothelial Cells ◽  
Epithelial Cells ◽  
Tight Junctions ◽  
Wound Repair ◽  
Chronic Wounds ◽  
Healing Process ◽  
Intercellular Junctions ◽  
Wound Healing Process ◽  
Healing Wounds

Bicellular tight junctions (TJs) are intercellular junctions comprised of a variety of transmembrane proteins including occludin, claudins, and junctional adhesion molecules (JAMs) as well as intracellular scaffold proteins such as zonula occludens (ZOs). TJs are functional, intercellular structures that form a barrier between adjacent cells, which constantly seals and unseals to control the paracellular passage of molecules. They are primarily present in the epithelial and endothelial cells of all tissues and organs. In addition to their well-recognized roles in maintaining cell polarity and barrier functions, TJs are important regulators of signal transduction, which modulates cell proliferation, migration, and differentiation, as well as some components of the immune response and homeostasis. A vast breadth of research data is available on TJs, but little has been done to decipher their specific roles in wound healing, despite their primary distribution in epithelial and endothelial cells, which are essential contributors to the wound healing process. Some data exists to indicate that a better understanding of the functions and significance of TJs in healing wounds may prove crucial for future improvements in wound healing research and therapy. Specifically, recent studies demonstrate that occludin and claudin-1, which are two TJ component proteins, are present in migrating epithelial cells at the wound edge but are absent in chronic wounds. This indicates that functional TJs may be critical for effective wound healing. A tremendous amount of work is needed to investigate their roles in barrier function, re-epithelialization, angiogenesis, scar formation, and in the interactions between epithelial cells, endothelial cells, and immune cells both in the acute wound healing process and in non-healing wounds. A more thorough understanding of TJs in wound healing may shed new light on potential research targets and reveal novel strategies to enhance tissue regeneration and improve wound repair.

HUBUNGAN MOBILISASI DINI TERHADAP PENYEMBUHAN LUKA POST OPERASI SECTIO CESARIA

2019 ◽  
Vol 2 (1) ◽  
pp. 14-17
Author(s):  
Nurul Aini Siagian ◽  
Syafira Nusaibah ◽  
Andayani Boang Manalu
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Early Mobilization ◽  
Sectio Caesarea ◽  
Wound Healing Process ◽  
P Value ◽  
Cross Sectional ◽  
Care Services ◽  
Healing Wound ◽  
Rapid Healing

Early mobilization includes factors that can affect the process of wound healing after surgery. Immediate mobilization in stages is very useful for the process of healing wounds and preventing infection and venous thrombosis. The purpose of this study was to determine whether there is a relationship between early mobilization and the process of healing wound post operative sectio caesarea at Sinar Husni General Hospital Medan Helvetia. The research design used was analytic survey with cross sectional approach. The sample in this study used the Consecutive Sampling method of data collection using a checklist sheet conducted on a sample of 19 respondents. The results of the study in this study are the majority of respondents who did early mobilization and who experienced rapid wound healing process as many as 4 people (21%) while the minority of respondents who did early mobilization and who experienced slow wound healing process were 1 person (5.3%). The majority of respondents who did not mobilize early and who experienced a slow wound healing process were 11 people (57.9%) and a minority who did not mobilize early and who experienced rapid healing as many as 4 people (21.1%). Statistical test results obtained p value = 0.046 <0.005. The conclusions of the results of this study indicate there is a relationship between early mobilization and the process of healing post operative sectio of caesarea. Suggestions The results of this study can be applied as a reference to improve nursing care services, especially in providing counseling and assistance to patients.

Hubungan Status Gizi Dengan Proses Penyembuhan Luka Di Rsud H. Andi Sulthan Daeng Radja Kabupaten Bulukumba

2017 ◽  
Vol 2 (1) ◽  
pp. 20-28
Author(s):  
Fitriani ◽  
Tenriwati
Keyword(s):  
Wound Healing ◽  
Nutritional Status ◽  
Healing Process ◽  
Data Retrieval ◽  
Observational Research ◽  
Wound Healing Process ◽  
P Value ◽  
Chi Square ◽  
Cross Sectional ◽  
Chi Square Test

At present, the incidence of injuries in Indonesia is quite high, as seen from data on traffic accidents in the general public. There are several factors that affect wound healing, one of which is nutritional status. Based on the preliminary data retrieval conducted by researchers in the seruni surgery room in the last 1 month namely in March, it was found that the number of wounded patients was 109 patients, where the number of men was 78 (71.56%) while the number of women was 31 ( 28.44%) The purpose of this study was to determine the relationship between nutritional status and the wound healing process in RSUD. H. Andi. Sulthan Daeng Radja Kab. Bulukumba. This research uses the type of design of this research is quantitative research. This type of research uses analytic observational research with cross sectional approach. The sample of this study were 41 respondents taken by purposive sampling method. Data analysis in this study used the chi-square test (chi square test). The results of the analysis used the chi-square statistical test with a confidence level (α = 0.05). Based on the results of this test, the p value is 0.001, thus p <α (0.001 <0.05), then Ho is rejected and Ha is accepted. The conclusion of this study is that there is a relationship between nutritional status and the process of wound healing in RSUD. H. Andi. Sulthan Daeng Radja Kab. Bulukumba. Researchers suggest that this study be used as a material consideration in the fulfillment of nutrition in wound care patients in RSUD.H.A. Sulthan Daeng Radja Kab. Bulukumba and this research can be continued by conducting research related to the wound healing process and linking it with other variables.

Natural, Synthetic and their Combinatorial Nanocarriers Based Drug Delivery System in the Treatment Paradigm for Wound Healing Via Dermal Targeting

2020 ◽  
Vol 26 (36) ◽  
pp. 4551-4568
Author(s):  
Mohammad Kashif Iqubal ◽  
Sadaf Saleem ◽  
Ashif Iqubal ◽  
Aiswarya Chaudhuri ◽  
Faheem Hyder Pottoo ◽  
...  
Keyword(s):  
Drug Delivery ◽  
Wound Healing ◽  
Photodynamic Therapy ◽  
Growth Factors ◽  
Combination Therapy ◽  
Healing Process ◽  
Wound Healing Process ◽  
Wound Site ◽  
Synthetic Drugs ◽  
Treatment Paradigm

A wound refers to the epithelial loss, accompanied by loss of muscle fibers collagen, nerves and bone instigated by surgery, trauma, frictions or by heat. Process of wound healing is a compounded activity of recovering the functional integrity of the damaged tissues. This process is mediated by various cytokines and growth factors usually liberated at the wound site. A plethora of herbal and synthetic drugs, as well as photodynamic therapy, is available to facilitate the process of wound healing. Generally, the systems used for the management of wounds tend to act through covering the ruptured site, reduce pain, inflammation, and prevent the invasion and growth of microorganisms. The available systems are, though, enough to meet these requirements, but the involvement of nanotechnology can ameliorate the performance of these protective coverings. In recent years, nano-based formulations have gained immense popularity among researchers for the wound healing process due to the enhanced benefits they offer over the conventional preparations. Hereupon, this review aims to cover the entire roadmap of wound healing, beginning from the molecular factors involved in the process, the various synthetic and herbal agents, and combination therapy available for the treatment and the current nano-based systems available for delivery through the topical route for wound healing.

Scientific aspect on Diet explained by Susrutha in Wound Healing

2017 ◽  
Vol 2 (05) ◽  
Author(s):  
Manoj Kumar ◽  
Amareshappa . ◽  
Anjali Bharadwaj ◽  
Shailaja S. V.
Keyword(s):  
Wound Healing ◽  
Mineral Metabolism ◽  
Healing Process ◽  
Surgical Techniques ◽  
The Body ◽  
Wound Healing Process ◽  
Human Being ◽  
Different Sources ◽  
Scientific Aspect ◽  
Important Branch

Wound healing has been the burning problem in a surgical practice because of a remarkable increase in the number of traumatic cases. A wound causes a number of changes in the body that can affect the healing process, including changes in energy, protein, carbohydrate, fat, vitamin and mineral metabolism. Various Ayurveda literatures, particularly, Sushruta Samhita, which is said to be an ancient textbook of surgery in Ayurveda, has mentioned about the diet for the person suffering from the wound, and the author said that diet plays a very important role in the wound healing process. Sushruta - The father of surgery has scientifically classified it in a systemic manner, whose wealth of clinical material and the principles of management are valid even today. Shalya Tantra (surgical branch in Ayurveda Science) is one of the important branch of Ayurveda, in which surgical and para-surgical techniques has described for management of various diseases. Vrana is the most important and widely described chapter of Shalya Tantra. Vrana (wound) is one of them, which have been managed by human being from starting of civilization. Under the circumstances, the first thing which the men came across was the injury from different sources which caused him the Vrana. Vrana is seen as debilitating and scaring disorder, usually seen affecting the human being at any age. Well balanced nutrition plays an essential role in the wound healing.

PENGARUH MOBILISASI DINI TERHADAP PENYEMBUHAN LUKA POST SECTIO CAESAREA

2017 ◽  
Vol 11 (1) ◽  
pp. 109
Author(s):  
Reni Heryani ◽  
Ardenny Denny
Keyword(s):  
Wound Healing ◽  
Placenta Previa ◽  
Healing Process ◽  
Early Mobilization ◽  
Sectio Caesarea ◽  
Uterine Action ◽  
Wound Healing Process ◽  
P Value ◽  
Post Test ◽  
Development Goals

<p align="center"><strong>A</strong><strong>BSTRAK</strong><strong></strong></p><p align="center"> </p><p>Salah satu tujuan pembangunan era <em>Millenium Development goals (MDG’s)</em> 2015 adalah perbaikan kesehatan maternal. Salah satu cara di dalam persalinan atau mengeluarkan bayi secara patologis yaitu dengan sectio caesarea. Menurut  statistik 3.509 kasus sectio caesarea, indikasi terbanyak adalah disproporsi cephalo pelvik (21%), sedangkan indikasi lain adalah gawat janin (14%), plasenta previa (11%), pernah sectio caesarea (11%), incoordinate uterine action (9%), preeklamsi dan hipertensi (7%). Penelitian ini menggunakan desain penelitian <em>Quasy Experiment</em> dengan <em>post test only with control.</em> Hasil penelitian menunjukkan bahwa umumnya responden memiliki umur tidak berisiko terhadap tindakan operasi yati sebanyak 15 orang (75%), sebagian responden pertama kali dilakukan operasi caesarea yaitu sebanyak 10 orang (50,0%), sebagian responden mengalami penyembuhan luka yang normal yaitu sebanyak 13 orang (65,0%), dan sebagian responden responden melakukan mobilisasi dini yaitu sebanyak 14  orang (70,0%). Secara statistik terdapat pengaruh mobilisasi dini terhadap penyembuhan luka post sectio caesarea di RSUD Arifin Achmad Pekanbaru (p value = 0.007). Disarankan bagi respnden dapat meningkatkan kesadarannya dalam meningkatkan derajat kesehatan melalui latihan mobilisasi dini untuk mempercepat proses penyembuhan luka akibat operasi.</p><p><em> </em></p><p><em>Kata Kunci      : </em><em>sectio </em><em>caesarea, mobilisasi, penyembuhan luka</em></p><p><em> </em></p><p align="center"><strong><em>ABSTRACT</em></strong></p><p><em> </em></p><p><em>One of the goals of development era of Millennium Development Goals (MDG's) in 2015 is the improvement of maternal health.</em><em> </em><em>One way in the delivery or the baby out with the pathological ie sectio caesarea. According to 3509 statistics compiled case sectio caesarea, an indication of cephalo pelvic disproportion is the highest (21%), while the other is an indication of fetal distress (14%), placenta previa (11%), never sectio caesarea (11%), incoordinate uterine action (9%), preeclampsia and hypertension (7%).</em><em> </em><em>This study research design quasy Experiment with post test only with control. The results showed that respondents generally have a lifespan of no risk for surgery yati many as 15 people (75%), the majority of respondents were first performed caesarea operation as many as 10 people (50.0%), the majority of respondents experienced a normal wound healing as many as 13 people (65.0%), and the majority of respondents respondents did early mobilization as many as 14 people (70.0%). There is a statistically significant relationship between early mobilization on wound healing post sectio caesarea (p value = 0.007). Suggested for respnden can increase awareness in improving health status through early mobilization exercises to accelerate the wound healing process as a result of the operation.</em></p><p><em> </em></p><em>Keywords: sectio caesarea, mobilization, wound healing</em>

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