scholarly journals Research Progress in the Mechanism of Effect of PRP in Bone Deficiency Healing

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Ning Zhang ◽  
Yong-Ping Wu ◽  
Sheng-Jun Qian ◽  
Chong Teng ◽  
Shuai Chen ◽  
...  
Keyword(s):  
Bone Repair ◽  
Molecular Mechanisms ◽  
Platelet Rich Plasma ◽  
Autologous Blood ◽  
Research Progress ◽  
Current Evidence ◽  
Clinical Settings ◽  
Bone Deficiency ◽  
Defect Repair

Platelet-rich plasma (PRP) therapy is a recently developed technique that uses a concentrated portion of autologous blood to try to improve and accelerate the healing of various tissues. There is a considerable interest in using these PRP products for the treatment used in bone deficiency healing. Because PRP products are safe and easy to prepare and administer, there has been increased attention toward using PRP in numerous clinical settings. The benefits of PRP therapy appear to be promising, and many investigators are exploring the ways in which this therapy can be used in the clinical setting. At present, the molecular mechanisms of bone defect repair studies have focused on three aspects of the inflammatory cytokines, growth factors and angiogenic factors. The role of PRP works mainly through these three aspects of bone repair. The purpose of this paper is to review the current evidence on the mechanism of the effect of PRP in bone deficiency healing.

NOB1: A Potential Biomarker or Target in Cancer

2019 ◽  
Vol 20 (10) ◽  
pp. 1081-1089
Author(s):  
Weiwei Ke ◽  
Zaiming Lu ◽  
Xiangxuan Zhao
Keyword(s):  
Cancer Treatment ◽  
Molecular Mechanisms ◽  
Rna Binding ◽  
Binding Protein ◽  
Tumor Development ◽  
Anticancer Therapy ◽  
Research Progress ◽  
Normal Tissues ◽  
Potential Biomarker

Human NIN1/RPN12 binding protein 1 homolog (NOB1), an RNA binding protein, is expressed ubiquitously in normal tissues such as the lung, liver, and spleen. Its core physiological function is to regulate protease activities and participate in maintaining RNA metabolism and stability. NOB1 is overexpressed in a variety of cancers, including pancreatic cancer, non-small cell lung cancer, ovarian cancer, prostate carcinoma, osteosarcoma, papillary thyroid carcinoma, colorectal cancer, and glioma. Although existing data indicate that NOB1 overexpression is associated with cancer growth, invasion, and poor prognosis, the molecular mechanisms behind these effects and its exact roles remain unclear. Several studies have confirmed that NOB1 is clinically relevant in different cancers, and further research at the molecular level will help evaluate the role of NOB1 in tumors. NOB1 has become an attractive target in anticancer therapy because it is overexpressed in many cancers and mediates different stages of tumor development. Elucidating the role of NOB1 in different signaling pathways as a potential cancer treatment will provide new ideas for existing cancer treatment methods. This review summarizes the research progress made into NOB1 in cancer in the past decade; this information provides valuable clues and theoretical guidance for future anticancer therapy by targeting NOB1.

scholarly journals Current Evidence for a Role of Neuropeptides in the Regulation of Autophagy

2017 ◽  
Vol 2017 ◽  
pp. 1-10 ◽  
Author(s):  
Elisabetta Catalani ◽  
Clara De Palma ◽  
Cristiana Perrotta ◽  
Davide Cervia
Keyword(s):  
Molecular Mechanisms ◽  
Current Evidence ◽  
Pathological Conditions ◽  
Organ Systems ◽  
Intercellular Signalling ◽  
Physiological Homeostasis ◽  
Response To Stress ◽  
Autophagic Process ◽  
Regulatory Functions

Neuropeptides drive a wide diversity of biological actions and mediate multiple regulatory functions involving all organ systems. They modulate intercellular signalling in the central and peripheral nervous systems as well as the cross talk among nervous and endocrine systems. Indeed, neuropeptides can function as peptide hormones regulating physiological homeostasis (e.g., cognition, blood pressure, feeding behaviour, water balance, glucose metabolism, pain, and response to stress), neuroprotection, and immunomodulation. We aim here to describe the recent advances on the role exerted by neuropeptides in the control of autophagy and its molecular mechanisms since increasing evidence indicates that dysregulation of autophagic process is related to different pathological conditions, including neurodegeneration, metabolic disorders, and cancer.

Role of Bone Marrow Stromal Cells in Impaired Bone Repair from BRONJ Osseous Lesions

2017 ◽  
Vol 96 (5) ◽  
pp. 539-546 ◽  
Author(s):  
L.H. He ◽  
E. Xiao ◽  
J.G. An ◽  
Y. He ◽  
S. Chen ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Stromal Cells ◽  
Bone Marrow Stromal Cells ◽  
Bone Repair ◽  
Early Stage ◽  
Central Area ◽  
Osteonecrosis Of The Jaw ◽  
Marrow Stromal Cells ◽  
Defect Repair

Treatment of bisphosphonate-related osteonecrosis of the jaw (BRONJ) has posed significant challenges to maxillofacial surgeons because of the poor repair of BRONJ bone defects. Moreover, the pathological mechanisms remain unclear. Bone marrow stromal cells (BMSCs) play key roles during bone repair and bone regeneration. However, the activities of BMSCs derived from BRONJ lesions and the BRONJ lesion boundary, as well as the roles of BMSCs in BRONJ defect repair, are poorly defined. In this study, we found that BMSCs from the central area of the osteonecrotic BRONJ region (center-BRONJ BMSCs) and the peripheral area at the recommended debridement boundary (peri-BRONJ BMSCs) had decreased proliferative ability, self-renewal capacity, and multidifferentiation capacities compared with control BMSCs. Osteoclast-inducing ability was also impaired in BRONJ BMSCs. All of these results suggested that the decreased activities of BRONJ BMSCs, even the BMSCs derived from the BRONJ lesion boundary, might be an important factor leading to insufficient bone repair of BRONJ lesions. This study offers early stage evidence for the use of marrow stromal cells in the treatment of BRONJ.

scholarly journals Circular RNA Expression: Its Potential Regulation and Function in Abdominal Aortic Aneurysms

2021 ◽  
Vol 2021 ◽  
pp. 1-21
Author(s):  
Yanshuo Han ◽  
Hao Zhang ◽  
Ce Bian ◽  
Chen Chen ◽  
Simei Tu ◽  
...  
Keyword(s):  
Molecular Mechanisms ◽  
Human Life ◽  
Abdominal Aortic Aneurysms ◽  
Circular Rna ◽  
Aortic Aneurysms ◽  
Current Evidence ◽  
Circular Rnas ◽  
Regulatory Pathways ◽  
Abdominal Aortic

Abdominal aortic aneurysms (AAAs) have posed a great threat to human life, and the necessity of its monitoring and treatment is decided by symptomatology and/or the aneurysm size. Accumulating evidence suggests that circular RNAs (circRNAs) contribute a part to the pathogenesis of AAAs. circRNAs are novel single-stranded RNAs with a closed loop structure and high stability, having become the candidate biomarkers for numerous kinds of human disorders. Besides, circRNAs act as molecular “sponge” in organisms, capable of regulating the transcription level. Here, we characterize that the molecular mechanisms underlying the role of circRNAs in AAA development were further elucidated. In the present work, studies on the biosynthesis, bibliometrics, and mechanisms of action of circRNAs were aims comprehensively reviewed, the role of circRNAs in the AAA pathogenic mechanism was illustrated, and their potential in diagnosing AAAs was examined. Moreover, the current evidence about the effects of circRNAs on AAA development through modulating endothelial cells (ECs), macrophages, and vascular smooth muscle cells (VSMCs) was summarized. Through thorough investigation, the molecular mechanisms underlying the role of circRNAs in AAA development were further elucidated. The results demonstrated that circRNAs had the application potential in the diagnosis and prevention of AAAs in clinical practice. The study of circRNA regulatory pathways would be of great assistance to the etiologic research of AAAs.

scholarly journals Peripheral Mechanisms of Dental Pain: The Role of Substance P

2012 ◽  
Vol 2012 ◽  
pp. 1-6 ◽  
Author(s):  
Paola Sacerdote ◽  
Luca Levrini
Keyword(s):  
Substance P ◽  
Molecular Mechanisms ◽  
Dental Pain ◽  
Therapeutic Strategies ◽  
Current Evidence ◽  
Trigeminal Ganglia ◽  
Clinical Observations ◽  
P Concentration ◽  
Inflammatory Processes

Current evidence supports the central role of neuropeptides in the molecular mechanisms underlying dental pain. In particular, substance P, a neuropeptide produced in neuron cell bodies localised in dorsal root and trigeminal ganglia, contributes to the transmission and maintenance of noxious stimuli and inflammatory processes. The major role of substance P in the onset of dental pain and inflammation is increasingly being recognised. Well-grounded experimental and clinical observations have documented an increase in substance P concentration in patients affected by caries, pulpitis, or granulomas and in those undergoing standard orthodontic or orthodontic/dental care procedures. This paper focuses on the role of substance P in the induction and maintenance of inflammation and dental pain, in order to define future lines of research for the evaluation of therapeutic strategies aimed at modulating the complex effects of this mediator in oral tissues.

Applications of platelet- rich plasma (prp) in contemporary pediatric dentistry

2006 ◽  
Vol 30 (4) ◽  
pp. 283-286 ◽  
Author(s):  
N. Shashikiran ◽  
V. Subba Reddy ◽  
C. Yavagal ◽  
M Zakirulla
Keyword(s):  
Growth Factors ◽  
Present Article ◽  
Bone Grafting ◽  
Platelet Rich Plasma ◽  
Case Reports ◽  
Pediatric Dentistry ◽  
Clinical Applications ◽  
Current Evidence ◽  
Invaluable Tool

Current evidence and understanding of bone science recognize the pivotal role of growth factors in all the aspects of bone grafting and regeneration. Platelet-rich-plasma (PRP) is one of the richest sources of growth factors to enhance bone regeneration. The present article aims to highlight the basic mechanisms involved in the successful use of PRP and its clinical applications in Pediatric dentistry based on our case-reports citing its use for bone grafting in young children. With pertinence to its current advantages and recent applications, PRP could soon prove to be an invaluable tool for pediatric dental surgeons worldwide.

Regulatory role of NGFs in neurocognitive functions

2017 ◽  
Vol 28 (6) ◽  
pp. 649-673 ◽  
Author(s):  
Ashutosh Kumar ◽  
Vikas Pareek ◽  
Muneeb A. Faiq ◽  
Pavan Kumar ◽  
Khursheed Raza ◽  
...  
Keyword(s):  
Nervous System ◽  
Molecular Mechanisms ◽  
Adult Brain ◽  
Current Evidence ◽  
Future Research ◽  
Neurocognitive Dysfunction ◽  
Neurocognitive Functions ◽  
The Central Nervous System ◽  
Health And Disease

AbstractNerve growth factors (NGFs), especially the prototype NGF and brain-derived neurotrophic factor (BDNF), have a diverse array of functions in the central nervous system through their peculiar set of receptors and intricate signaling. They are implicated not only in the development of the nervous system but also in regulation of neurocognitive functions like learning, memory, synaptic transmission, and plasticity. Evidence even suggests their role in continued neurogenesis and experience-dependent neural network remodeling in adult brain. They have also been associated extensively with brain disorders characterized by neurocognitive dysfunction. In the present article, we aimed to make an exhaustive review of literature to get a comprehensive view on the role of NGFs in neurocognitive functions in health and disease. Starting with historical perspective, distribution in adult brain, implied molecular mechanisms, and developmental basis, this article further provides a detailed account of NGFs’ role in specified neurocognitive functions. Furthermore, it discusses plausible NGF-based homeostatic and adaptation mechanisms operating in the pathogenesis of neurocognitive disorders and has presents a survey of such disorders. Finally, it elaborates on current evidence and future possibilities in therapeutic applications of NGFs with an emphasis on recent research updates in drug delivery mechanisms. Conclusive remarks of the article make a strong case for plausible role of NGFs in comprehensive regulation of the neurocognitive functions and pathogenesis of related disorders and advocate that future research should be directed to explore use of NGF-based mechanisms in the prevention of implicated diseases as well as to target these molecules pharmacologically.

scholarly journals Unraveling the Relationship of Asthma and COVID-19

2021 ◽  
Vol 11 (12) ◽  
pp. 1374
Author(s):  
Agamemnon Bakakos ◽  
Petros Bakakos ◽  
Nikoletta Rovina
Keyword(s):  
Molecular Mechanisms ◽  
Viral Infections ◽  
Asthma Severity ◽  
Current Evidence ◽  
Asthma Exacerbations ◽  
Inflammatory Phenotypes ◽  
Relationship Of ◽  
The Impact ◽  
The Relationship

Viral infections are one of the main causes of asthma exacerbations. During the COVID-19 era, concerns regarding the relationship of SARS-CoV2 with asthma have been raised. The concerns are both for COVID severity and asthma exacerbations. Many studies on COVID-19 epidemiology and comorbidities have assessed whether asthma represents a risk factor for SARS-CoV2 infection and/or more severe course of the disease. This review covers the current evidence on the prevalence of asthma in COVID-19 and its association with susceptibility to and severity of SARS-CoV2 infection. It will examine the possible role of underlying asthma severity in COVID-19 related outcomes as well as the molecular mechanisms involved in the co-existence of these entities. The possible role of asthma inflammatory phenotypes will also be evaluated. Finally, the impact of asthma comorbidities and the implications of asthma medication on COVID-19 will be addressed.

scholarly journals Influence of Hypoxia on the Epithelial-Pathogen Interactions in the Lung: Implications for Respiratory Disease

2021 ◽  
Vol 12 ◽  
Author(s):  
Lee K. Page ◽  
Karl J. Staples ◽  
C. Mirella Spalluto ◽  
Alastair Watson ◽  
Tom M. A. Wilkinson
Keyword(s):  
Airway Epithelium ◽  
Lung Diseases ◽  
Respiratory Diseases ◽  
Molecular Mechanisms ◽  
Complex Disease ◽  
Tissue Hypoxia ◽  
Current Evidence ◽  
Chronic Obstructive ◽  
Respiratory Pathogens

Under normal physiological conditions, the lung remains an oxygen rich environment. However, prominent regions of hypoxia are a common feature of infected and inflamed tissues and many chronic inflammatory respiratory diseases are associated with mucosal and systemic hypoxia. The airway epithelium represents a key interface with the external environment and is the first line of defense against potentially harmful agents including respiratory pathogens. The protective arsenal of the airway epithelium is provided in the form of physical barriers, and the production of an array of antimicrobial host defense molecules, proinflammatory cytokines and chemokines, in response to activation by receptors. Dysregulation of the airway epithelial innate immune response is associated with a compromised immunity and chronic inflammation of the lung. An increasing body of evidence indicates a distinct role for hypoxia in the dysfunction of the airway epithelium and in the responses of both innate immunity and of respiratory pathogens. Here we review the current evidence around the role of tissue hypoxia in modulating the host-pathogen interaction at the airway epithelium. Furthermore, we highlight the work needed to delineate the role of tissue hypoxia in the pathophysiology of chronic inflammatory lung diseases such as asthma, cystic fibrosis, and chronic obstructive pulmonary disease in addition to novel respiratory diseases such as COVID-19. Elucidating the molecular mechanisms underlying the epithelial-pathogen interactions in the setting of hypoxia will enable better understanding of persistent infections and complex disease processes in chronic inflammatory lung diseases and may aid the identification of novel therapeutic targets and strategies.

scholarly journals Role of long non-coding RNA H19 in the development of osteoporosis

2021 ◽  
Vol 27 (1) ◽  
Author(s):  
Senxiang Chen ◽  
Da Liu ◽  
Zimo Zhou ◽  
Sen Qin
Keyword(s):  
Molecular Mechanisms ◽  
The Body ◽  
Research Progress ◽  
Effective Prevention ◽  
Treatment Of Osteoporosis ◽  
Non Coding Rna ◽  
Metabolic Bone ◽  
Different Types ◽  
Long Non Coding Rna

Abstract Background Osteoporosis is a widespread and serious metabolic bone disease. At present, revealing the molecular mechanisms of osteoporosis and developing effective prevention and treatment methods are of great significance to health worldwide. LncRNA is a non-coding RNA peptide chain with more than 200 nucleotides. Researchers have identified many lncRNAs implicated in the development of diseases and lncRNA H19 is an example. Results A large amount of evidence supports the fact that long non-coding RNA (lncRNA) genes, such as H19, have multiple, far-reaching effects on various biological functions. It has been found that lncRNA H19 has a role in the regulation of different types of cells in the body including the osteoblasts, osteocytes, and osteoclasts found in bones. Therefore, it can be postulated that lncRNA H19 affects the incidence and development of osteoporosis. Conclusion The prospect of targeting lncRNA H19 in the treatment of osteoporosis is promising because of the effects that lncRNA H19 has on the process of osteogenic differentiation. In this review, we summarize the molecular pathways and mechanisms of lncRNA H19 in the pathogenesis of osteoporosis and summarize the research progress of targeting H19 as a treatment option. Research is emerging that explores more effective treatment possibilities for bone metabolism diseases using molecular targets.

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