scholarly journals Myocardial infarction remodeling that progresses to heart failure: a signaling misunderstanding

2018 ◽  
Vol 315 (1) ◽  
pp. H71-H79 ◽  
Author(s):  
Alan J. Mouton ◽  
Osvaldo J. Rivera ◽  
Merry L. Lindsey
Keyword(s):  
Myocardial Infarction ◽  
Heart Failure ◽  
Wound Healing ◽  
Current Knowledge ◽  
Healing Process ◽  
Cell Types ◽  
Left Ventricular ◽  
Wound Healing Process ◽  
The Status ◽  
The Right

After myocardial infarction, remodeling of the left ventricle involves a wound-healing orchestra involving a variety of cell types. In order for wound healing to be optimal, appropriate communication must occur; these cells all need to come in at the right time, be activated at the right time in the right amount, and know when to exit at the right time. When this occurs, a new homeostasis is obtained within the infarct, such that infarct scar size and quality are sufficient to maintain left ventricular size and shape. The ideal scenario does not always occur in reality. Often, miscommunication can occur between infarct and remote spaces, across the temporal wound-healing spectrum, and across organs. When miscommunication occurs, adverse remodeling can progress to heart failure. This review discusses current knowledge gaps and recent development of the roles of inflammation and the extracellular matrix in myocardial infarction remodeling. In particular, the macrophage is one cell type that provides direct and indirect regulation of both the inflammatory and scar-forming responses. We summarize current research efforts focused on identifying biomarker indicators that reflect the status of each component of the wound-healing process to better predict outcomes.

scholarly journals Novel formulation approaches for wound healing

2020 ◽  
Vol 11 (SPL4) ◽  
pp. 937-948
Author(s):  
Tanaji D Nandgude ◽  
Syed Nateque Naser
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Cell Types ◽  
Wound Management ◽  
Wound Healing Process ◽  
Anatomic Structure ◽  
Tissue Integrity ◽  
Molecular Events ◽  
Acute Injuries ◽  
Healing Wounds

A wound is damage to the typical anatomic structure. Wound healing is an immediate therapeutic response to injury. It is a creation of the combined response of some cell types towards injury. Wound healing takes place by a sequence of molecular events which cooperate to fix tissue integrity and cell work. In typical healthy individual under ordinary conditions, these physiological events take place smoothly. Though sometimes, these molecular events are arrested, this brings about in struggle to heal. There is an assortment of approaches for the way toward managing and controlling both acute injuries (acute wounds) and ceaseless non-mending wounds (chronic non-healing wounds). The principal objective of these two cases is to achieve better-wound healing. Ideal formulations of wound healing should not only enhance the healing process but also reduce pain, infection and loss of electrolytes, proteins and liquids from the injury. A broad scope of items typically introduced with target various parts of the wound healing process depends on numerous types of wounds and novel polymers utilised for the conveyance of medications to both acute and ceaseless injuries. These include alginate, hydrocolloids, hydrofibers, polyurethane, and hydrogels. This article gives particular importance to different novel approaches in the management of wound healing. This review draws out the data and hopes to provide understanding into traditional, current and imminent techniques and methods for wound management.

scholarly journals Hydrogel plus growth factors treatment after 2940nm erbium:YAG lattice laser improves periorbital wrinkles and wound healing: a case report

2021 ◽  
Vol 49 (9) ◽  
pp. 030006052110425
Author(s):  
Jiaqi Zeng ◽  
Zhen Li ◽  
Feiyan Lin ◽  
Shaohong Fu ◽  
Jingyi Li ◽  
...  
Keyword(s):  
Wound Healing ◽  
Case Report ◽  
Laser Therapy ◽  
Wound Care ◽  
Healing Process ◽  
Alternative Therapy ◽  
Skin Aging ◽  
Wound Healing Process ◽  
Gel Treatment ◽  
The Right

Skin aging is an inevitable physiological process and periorbital wrinkling is an active sign of the process. Laser therapy is an effective method for improving periorbital wrinkles and wound care after laser therapy can accelerate the wound healing process. This case report describes a typical case of a 47-year-old male that presented with a 10-year history of gradually-worsening bilateral periorbital wrinkles. These were treated using a 2940 nm erbium (Er):YAG lattice laser combined with recombinant bovine basic fibroblast growth factor (bFGF) gel and hydrogel (HG) treatment on the left side of his face compared with laser therapy and bFGF gel on the right side of his face. HG combined with bFGF gel treatment after 2940 nm Er:YAG lattice laser therapy improved postoperative swelling and pigmentation compared with bFGF gel alone; and it promoted periorbital wrinkle improvement and wound healing. In conclusion, HG combined with GFs after laser therapy could be an alternative therapy for periorbital wrinkles.

scholarly journals Effect of Hypoxia on Gene Expression in Cell Populations Involved in Wound Healing

2019 ◽  
Vol 2019 ◽  
pp. 1-20 ◽  
Author(s):  
Sarah D’Alessandro ◽  
Andrea Magnavacca ◽  
Federica Perego ◽  
Marco Fumagalli ◽  
Enrico Sangiovanni ◽  
...  
Keyword(s):  
Gene Expression ◽  
Wound Healing ◽  
Endothelial Cells ◽  
Current Knowledge ◽  
Expression Profiles ◽  
Healing Process ◽  
Critical Role ◽  
Dermal Fibroblasts ◽  
Cell Populations ◽  
Wound Healing Process

Wound healing is a complex process regulated by multiple signals and consisting of several phases known as haemostasis, inflammation, proliferation, and remodelling. Keratinocytes, endothelial cells, macrophages, and fibroblasts are the major cell populations involved in wound healing process. Hypoxia plays a critical role in this process since cells sense and respond to hypoxic conditions by changing gene expression. This study assessed the in vitro expression of 77 genes involved in angiogenesis, metabolism, cell growth, proliferation and apoptosis in human keratinocytes (HaCaT), microvascular endothelial cells (HMEC-1), differentiated macrophages (THP-1), and dermal fibroblasts (HDF). Results indicated that the gene expression profiles induced by hypoxia were cell-type specific. In HMEC-1 and differentiated THP-1, most of the genes modulated by hypoxia encode proteins involved in angiogenesis or belonging to cytokines and growth factors. In HaCaT and HDF, hypoxia mainly affected the expression of genes encoding proteins involved in cell metabolism. This work can help to enlarge the current knowledge about the mechanisms through which a hypoxic environment influences wound healing processes at the molecular level.

scholarly journals Skin Acute Wound Healing: A Comprehensive Review

2019 ◽  
Vol 2019 ◽  
pp. 1-15 ◽  
Author(s):  
Luis Cañedo-Dorantes ◽  
Mara Cañedo-Ayala
Keyword(s):  
Wound Healing ◽  
Mononuclear Cells ◽  
Nerve Repair ◽  
Healing Process ◽  
Tissue Remodeling ◽  
Wound Healing Process ◽  
Second Phase ◽  
Peripheral Blood Mononuclear ◽  
Inflammatory Phase ◽  
The Status

Experimental work of the last two decades has revealed the general steps of the wound healing process. This complex network has been organized in three sequential and overlapping steps. The first step of the inflammatory phase is an immediate response to injury; primary sensory neurons sense injury and send danger signals to the brain, to stop bleeding and start inflammation. The following target of the inflammatory phase, led by the peripheral blood mononuclear cells, is to eliminate the pathogens and clean the wound. Once this is completed, the inflammatory phase is resolved and homeostasis is restored. The aim of the proliferative phase, the second phase, is to repair wound damage and begin tissue remodeling. Fibroplasia, reepithelialization, angiogenesis, and peripheral nerve repair are the central actions of this phase. Lastly, the objective of the final phase is to complete tissue remodeling and restore skin integrity. This review provides present day information regarding the status of the participant cells, extracellular matrix, cytokines, chemokines, and growth factors, as well as their interactions with the microenvironment during the wound healing process.

scholarly journals EFEK SERBUK KOPI ROBUSTA (Coffea canephora) TERHADAP PENYEMBUHAN LUKA INSISI PADA KELINCI (Oryctolagus cuniculus)

2015 ◽  
Vol 3 (3) ◽  
Author(s):  
Lilian N. Artho ◽  
Jane Wuisan ◽  
J. A. Najoan
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Treated Group ◽  
Coffea Canephora ◽  
Control Group ◽  
Wound Healing Process ◽  
Robusta Coffee ◽  
Coffee Powder ◽  
The Right ◽  
Sterile Gauze

Abstract: Coffee is known as food and drink as well as alternative medicine for various types of wounds. One of the most coffee plants in Indonesia is Robusta coffee (Coffea canephora). This study aimed to determine whether Robusta coffee powder could accelerate the wound healing process. This was an experimental study using four rabbits as subjects. Incisions were made on the rabbit backs, right and left, with a length of 5 cm. Wounds on the left backs, the untreated/control group, were only covered with sterile gauze. Wounds on the right backs, the treated group, were applied with robusta coffee powder and covered with sterile gauze. Robusta coffee powder and gauze were replaced two times a day. Wounds were macroscopically observed for 2 weeks. The results showed that at day 7, the wounds were still equally opened, dry, looked not too deep, and there was a crust on each wound surface. The lengths of the treated wounds were shorter than of the control wounds. At day 14, the edges of the treated wounds looked closer, the crusts were still attached to the wound surfaces and were smaller than of the control wounds. Conclusion: Robusta coffee powder (Coffea canephora) could accelerate the healing process of incised wounds on rabbit skin.Keywords: wound healing, wound incision, robusta coffee powder, coffea canephoraAbstrak: Kopi bukan hanya dikenal sebagai makanan dan minuman saja tetapi bisa juga sebagai obat alternatif dalam menangani berbagai jenis luka. Salah satu jenis tanaman kopi yang paling banyak di Indonesia ialah kopi Robusta (Coffea canephora). Penelitian ini bertujuan untuk menentukan apakah sebuk kopi robusta mempunyai efek untuk mempercepat proses penyembuhan luka. Penelitian ini menggunakan metode eksperimental dengan 4 ekor kelinci sebagai hewan coba. Luka insisi dibuat pada punggung kanan dan kiri kelinci dengan panjang 5 cm. Luka pada punggung kiri merupakan luka kontrol yang tidak diberi perlakuan, hanya ditutupi dengan kasa steril. Luka pada punggung kanan merupakan luka perlakuan dengan diberi serbuk kopi robusta lalu ditutup kasa steril. Serbuk kopi robusta dan kasa diganti dua kali sehari. Pengamatan dilakukan selama 2 minggu dengan membandingkan gambaran makroskopik kedua luka. Hasil penelitian memperlihatkan pada hari ke 7 kedua luka masih sama-sama terbuka, kering, tampak sudah tidak terlalu dalam, dan terdapat kerak yang menempel pada permukaan luka. Ukuran luka perlakuan lebih pendek dari luka kontrol. Hari ke 14 kedua luka sudah mulai menutup, kerak masih menempel pada permukaan luka dan ukuran kerak luka perlakuan lebih kecil dari luka kontrol. Simpulan: Serbuk kopi robusta (Coffea canephora) memiliki efek untuk mempercepat penyembuhan luka insisi pada kulit kelinci.Kata kunci: penyembuhan luka, luka insisi, kopi robusta, coffea canephora

scholarly journals Uji efek ekstrak daun dewa (Gyanurasegetum [Lour]. Merr) terhadap masa penyembuhan luka insisi kulit kelinci (Oryctolaguscuniculus)

2016 ◽  
Vol 4 (1) ◽  
Author(s):  
. Aaron ◽  
Henoch Awaloei ◽  
Jane Wuisan
Keyword(s):  
Experimental Study ◽  
Wound Healing ◽  
Healing Process ◽  
Wound Healing Process ◽  
Rabbit Skin ◽  
The Public ◽  
Accelerate Wound Healing ◽  
Left And Right ◽  
The Right ◽  
Incision Wound

Abstract: Marsh fleabane (Gynurasegetum [Lour].Merr.) is one of the medicinal plants used by the public as an anti-septic to accelerate wound healing. The contents of Marsh fleabane that could accelerate wound healing are flavonoids, saponins, and atsiri oil. This study aimed to determine the effect of Marsh fleabane extract on wound healing incision of rabbit skin. This was an experimental study. This study was conducted in the Laboratory of Pharmacology and Therapeutics Faculty of Medicine, University of Sam Ratulangi. Samples were 3 rabbits. Incised wounds of 4 cm length and 2 mm depth were made on the rabbits’ left and right backs. The wounds on the left backs were given Marsh fleabane extract, meanwhile the wounds on the right backs were not treated. The results showed that the wound healing process of the incised wounds treated with Marsh fleabane extract was faster compared to the incised wounds without treatment. Conclusion: Marsh fleabane extract could accelerate the wound healing process of rabbit incised wound. Keywords: marsh fleabane, incision wound healing Abstrak: Daun dewa (Gyanurasegetum [Lour].Merr.) merupakan salah satu tanaman berkhasiat yang biasa digunakan oleh masyarakat sebagai obat anti septik dan mempercepat penyembuhan luka. Kandungan yang terkandung dalam daun dewa yang dipercaya dapat mempercepat penyembuhan luka yaitu flavonoid, saponin, dan minyak atsiri. Penelitian ini bertujuan untuk mengetahui uji efek ekstrak daun dewa terhadap penyembuhan luka insisi pada kulit kelinci. Metode penelitian yang digunakan ialah rancangan eksperimental. Penelitian ini dilaksanakan di Laboratorium Farmakologi dan Terapi Fakultas Kedokteran Universitas Sam Ratulangi. Sampel yang digunakan berjumlah 3 ekor kelinci yang masing-masing punggung kiri dan kanannya diberi luka insisi sepanjang 4 cm dan kedalaman 2 mm. Luka pada punggung sebelah kiri diberikan ekstrak daun dewa sedangkan luka pada punggung bagian kanan tidak diberikan ekstrak daun dewa. Hasil penelitian memperlihatkan bahwa masa penyembuhan luka insisi kulit kelinci yang diberikan ekstrak daun dewa lebih singkat dibandingkan dengan luka insisi kulit kelinci yang tidak diberikan ekstrak daun dewa. Simpulan: Ekstrak daun dewa berefek terhadap penyembuhan luka insisi kulit kelinci.Kata kunci: daun dewa, penyembuhan luka insisi

scholarly journals Stem Cell-Derived Nanovesicles: A Novel Cell-Free Therapy for Wound Healing

2021 ◽  
Vol 2021 ◽  
pp. 1-14
Author(s):  
Jianghong Huang ◽  
Jun Zhang ◽  
Jianyi Xiong ◽  
Shuqing Sun ◽  
Jiang Xia ◽  
...  
Keyword(s):  
Wound Healing ◽  
Stem Cell ◽  
Wound Repair ◽  
Current Knowledge ◽  
Healing Process ◽  
Biologically Active ◽  
Research Progress ◽  
Wound Healing Process ◽  
Messenger Rnas ◽  
Skin Wound Healing

Wound healing and regeneration are a dynamic and complex process that requires a collaborative effort between growth factors, epidermal cells, dermal cells, extracellular matrix, and vessels local to the wound area. Mesenchymal stem cells participate in the recruitment site, mainly by releasing secretory factors and matrix proteins to promote wound healing. Stem cell-derived nanovesicles (CDNs), including microvesicles, exosomes, and exosome mimetics, contain most of the biologically active substances of their parent cells and have similar effects. CDNs can shuttle various proteins, messenger RNAs, and microRNAs to regulate the activity of receptor cells, and they play important roles in skin wound healing. This article reviews recent research progress on CDNs for wound repair. We summarize current knowledge on how CDNs regulate immunity, fibroblast activity, angiogenesis, and scar formation in the wound healing process. This review can help researchers explore new treatment strategies to enhance the therapeutic efficacy of CDNs, which have a promising future as naturally cell-free therapies.

Differential changes in left and right ventricular adenylyl cyclase activities in congestive heart failure

1997 ◽  
Vol 272 (2) ◽  
pp. H884-H893 ◽  
Author(s):  
R. Sethi ◽  
K. S. Dhalla ◽  
R. E. Beamish ◽  
N. S. Dhalla
Keyword(s):  
Myocardial Infarction ◽  
Heart Failure ◽  
Congestive Heart Failure ◽  
Left Ventricle ◽  
Right Ventricle ◽  
Adenylyl Cyclase ◽  
Adrenergic Receptors ◽  
The Status ◽  
Left And Right ◽  
The Right

The status of beta-adrenergic receptors and adenylyl cyclase in crude membranes from both left and right ventricles was examined when the left coronary artery in rats was occluded for 4, 8, and 16 wk. The adenylyl cyclase activity in the presence of isoproterenol was decreased in the uninfarcted (viable) left ventricle and increased in the right ventricle subsequent to myocardial infarction. The density of beta1-adrenergic receptors, unlike beta2-receptors, was reduced in the left ventricle, whereas no change in the characteristics of beta1- and beta2-adrenergic receptors was seen in the right ventricle. The catalytic activity of adenylyl cyclase was depressed in the viable left ventricle but was unchanged in the right ventricle. In comparison to sham controls, the basal, as well as NaF-, forskolin-, and 5'-guanylyl imidodiphosphate [Gpp(NH)p]-stimulated adenylyl cyclase activities were decreased in the left ventricle and increased in the right ventricle of the experimental animals. Opposite alterations in the adenylyl cyclase activities in left and right ventricles from infarcted animals were also seen when two types of purified sarcolemmal preparations were employed. These changes in adenylyl cyclase activities in the left and right ventricles were dependent on the degree of heart failure. Furthermore, adenosine 3',5'-cyclic monophosphate contents were higher in the right ventricle and lower in the left ventricle from infarcted animals injected with saline, isoproterenol, or forskolin in comparison to the controls. The results suggest differential changes in the viable left and right ventricles with respect to adenylyl cyclase activities during the development of congestive heart failure due to myocardial infarction.

Chronic Wounds: Innovations in Diagnostics and Therapeutics

2019 ◽  
Vol 25 (41) ◽  
pp. 5772-5781 ◽  
Author(s):  
Marieke Haalboom
Keyword(s):  
Wound Healing ◽  
Chronic Wounds ◽  
Chronic Wound ◽  
Current Knowledge ◽  
Wound Care ◽  
Healing Process ◽  
Diagnostic Tools ◽  
Bacterial Invasion ◽  
Wound Healing Process ◽  
Limited Effectiveness

Background: A major global health issue is the existence of chronic wounds. Appropriate diagnosis and treatment is essential to promote wound healing and prevent further complications. Traditional methods for treatment and diagnosis of chronic wounds have shown to be of limited effectiveness. Therefore, there is a need for the development of diagnostic and therapeutic innovations in chronic wound care. Objective: This mini-review aims to provide insight in the current knowledge of the wound healing process and the deficiencies encountered in chronic wounds, which provides a basis for the development of innovations in chronic wound care. Furthermore, promising diagnostic and therapeutic innovations will be highlighted. Methods: Literature was searched for recent articles (=<10 years) describing the current knowledge about the wound healing process and chronic wounds. The most promising diagnostic and therapeutic innovations were gathered from articles published in the past 5 years. Results/Conclusion: Wound healing is a well-organized process consisting of four phases: coagulation, inflammation, proliferation and wound remodelling. Chronic wounds often stagnate in the inflammatory phase and/or experience an impaired proliferative phase. This mini-review has demonstrated that increased knowledge about the processes involved in wound healing has paved the way for the development of new diagnostic tools and treatments for chronic wounds. Increased knowledge about bacterial invasion and infection in has encouraged researchers to develop diagnostic tools to help clinicians detect these phenomena appropriately and in time. Other researchers have shown that they are able to design/extract biochemical compounds that intervene in the disrupted healing processes in chronic wounds.

scholarly journals A Review on Polymeric Wound Dress for the Treatment of Burns and Diabetic Wounds

2021 ◽  
Vol 6 (2) ◽  
pp. 44-50
Author(s):  
Ashkan Farazin ◽  
Zahra Torkpour ◽  
Shakiba Dehghani ◽  
Ramin Mohammadi ◽  
Mina D. Fahmy ◽  
...  
Keyword(s):  
Wound Healing ◽  
Healing Process ◽  
Polymeric Materials ◽  
Skin Surface ◽  
Wound Management ◽  
Wound Healing Process ◽  
Diabetic Patients ◽  
Natural Polymers ◽  
Treatment Of Wounds ◽  
The Right

Today, various commercial dressings have been developed and introduced to the market. The diversity makes it difficult for the nurse to choose the right type. Although the most important reason to use a wound dress is to protect the wound from infection and prevent infection, but in fact, the main purpose of using these materials is to speed up the wound healing process. Traumatic injuries result in an epithelial wound that disrupts the continuity of the skin surface. These differences reveal as abrasions, punctures, and injuries. Wounds are divided into two types; the skin is either cut or ruptured, including deep wounds and bruises, or surface wounds. Expedited wound healing has been considered since the archaic era of human civilization, with the earliest reported case from the Ancient Egyptians. Wound lesions in mummified humans were observed to be cover with animal skin, with signs of (primary/secondary) wound healing present. A "new wound dressing" is an advanced wound dress used in wound management as biocompatible and biodegradable biomaterials that heal wounds and burns. In the past, it was believed that dry wounds had expedited healing and wet wounds have been found to promote using re-epithelization and result in reduced scar formation. Wounds can be treated using various types of natural polymers and materials. Also, techniques like electrospinning and freeze-drying techniques can be used for the fabrication of standard wound dress. These wounds are associated with bandages, inflammation, bleeding, pain, and pus. In this work, we consider various types of wounds and techniques to treat the wound. Susceptibility to these areas, due to special symptoms for each of them. Products like hydrogels, hydrocolloids, films, sponges, and nano-fiber polymeric materials are used to promote healing. In this review, we examine the ideal products for the treatment of wounds in diabetic patients.

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