Animal models for plaque rupture: a biomechanical assessment

2016 ◽  
Vol 115 (03) ◽  
pp. 501-508 ◽  
Author(s):  
Mat J. Daemen ◽  
Frank J. H. Gijsen ◽  
Kim Van der Heiden ◽  
Ayla Hoogendoorn
Keyword(s):  
Animal Models ◽  
Animal Studies ◽  
Plaque Rupture ◽  
Treatment Strategies ◽  
Strength Distribution ◽  
Atherosclerotic Plaques ◽  
Biomechanical Assessment ◽  
Inflammatory State ◽  
New Treatment ◽  
Patient At Risk

SummaryRupture of atherosclerotic plaques is the main cause of acute cardiovascular events. Animal models of plaque rupture are rare but essential for testing new imaging modalities to enable diagnosis of the patient at risk. Moreover, they enable the design of new treatment strategies to prevent plaque rupture. Several animal models for the study of atherosclerosis are available. Plaque rupture in these models only occurs following severe surgical or pharmaceutical intervention. In the process of plaque rupture, composition, biology and mechanics each play a role, but the latter has been disregarded in many animal studies. The biomechanical environment for atherosclerotic plaques is comprised of two parts, the pressure-induced stress distribution, mainly - but not exclusively – influenced by plaque composition, and the strength distribution throughout the plaque, largely determined by the inflammatory state. This environment differs considerably between humans and most animals, resulting in suboptimal conditions for plaque rupture. In this review we describe the role of the biomechanical environment in plaque rupture and assess this environment in animal models that present with plaque rupture.

scholarly journals Vestibular implants studied in animal models: clinical and scientific implications

2016 ◽  
Vol 116 (6) ◽  
pp. 2777-2788 ◽  
Author(s):  
Richard F. Lewis
Keyword(s):  
Animal Models ◽  
Vestibular System ◽  
Animal Studies ◽  
Vestibular Function ◽  
Clinical Problem ◽  
Head Motion ◽  
The Past ◽  
New Treatment ◽  
Vestibular Damage ◽  
The Brain

Damage to the peripheral vestibular system can result in debilitating postural, perceptual, and visual symptoms. A potential new treatment for this clinical problem is to replace some aspects of peripheral vestibular function with an implant that senses head motion and provides this information to the brain by stimulating branches of the vestibular nerve. In this review I consider animal studies performed at our institution over the past 15 years, which have helped elucidate how the brain processes information provided by a vestibular (semicircular canal) implant and how this information could be used to improve the problems experienced by patients with peripheral vestibular damage.

scholarly journals Small animal models of heart failure

2019 ◽  
Vol 115 (13) ◽  
pp. 1838-1849 ◽  
Author(s):  
Christian Riehle ◽  
Johann Bauersachs
Keyword(s):  
Heart Failure ◽  
Animal Models ◽  
Surgical Techniques ◽  
Treatment Strategies ◽  
Small Animal ◽  
Therapeutic Strategies ◽  
Genetic Modifications ◽  
Small Animal Models ◽  
New Treatment ◽  
Underlying Mechanisms

Abstract Heart disease is a major cause of death worldwide with increasing prevalence, which urges the development of new therapeutic strategies. Over the last few decades, numerous small animal models have been generated to mimic various pathomechanisms contributing to heart failure (HF). Despite some limitations, these animal models have greatly advanced our understanding of the pathogenesis of the different aetiologies of HF and paved the way to understanding the underlying mechanisms and development of successful treatments. These models utilize surgical techniques, genetic modifications, and pharmacological approaches. The present review discusses the strengths and limitations of commonly used small animal HF models, which continue to provide crucial insight and facilitate the development of new treatment strategies for patients with HF.

Retinoblastoma: from bench to bedside

2003 ◽  
Vol 5 (1) ◽  
pp. 1-22 ◽  
Author(s):  
Richard L. Hurwitz ◽  
Patricia Chévez-Barrios ◽  
Milton Boniuk ◽  
Murali Chintagumpala ◽  
Mary Y. Hurwitz
Keyword(s):  
Animal Models ◽  
Young Children ◽  
Effective Treatment ◽  
Metastatic Disease ◽  
Treatment Strategies ◽  
The Other ◽  
Disease Development ◽  
Eye Enucleation ◽  
New Treatment

Retinoblastoma (Rb) is the most common primary ocular malignancy of children and is caused by a mutation in the gene RB1. Approximately 40% of cases are associated with one or more constitutional mutations, and are therefore heritable, whereas the other 60% are sporadic. Rb is exclusively found in young children. In some cases, Rb tumours metastasise to extraocular organs including bone, lung and brain. Although there is no effective treatment for metastatic disease, non-metastatic cases can be cured by removal of the eye (enucleation). Newer treatment strategies emphasise salvaging the affected eye whenever possible. Animal models of Rb have been developed with xenograft and transgenic techniques. Each model has both strengths and weaknesses for exploring the mechanisms of disease development and progression and the efficacy of new treatment strategies.

scholarly journals Ovarian Cancer Animal Models for Preclinical Studies and Development of Ovarian Cancer Drugs

2019 ◽  
Vol 17 (2) ◽  
pp. 139
Author(s):  
Ni Made Dwi Sandhiutami ◽  
Puspita Eka Wuyung ◽  
Wawaimuli Arozal ◽  
Melva Louisa ◽  
Deni Rahmat
Keyword(s):  
Ovarian Cancer ◽  
Animal Models ◽  
Treatment Strategies ◽  
Reproductive Factors ◽  
Experimental Models ◽  
Genetically Engineered ◽  
Human Ovarian Cancer ◽  
Preneoplastic Lesions ◽  
Genetically Engineered Mice ◽  
New Treatment

Treatment for ovarian carcinoma is still far from optimal, animal models are still needed to study human epithelial ovarian cancer. Animal models of ovarian cancer are very important for understanding the pathogenesis of the disease and for testing new treatment strategies. Ovarian carcinogenesis models in mice have been modified and repaired to produce preneoplastic lesions and neoplastic ovaries that are pathogens resembling human ovarian cancer. Although spontaneous ovarian tumors in mice have been reported, some of the shortcomings of existing studies preclude their use as animal models of ovarian cancer. Because of this, many efforts have been made to develop animal models that are relevant for ovarian cancer. Experimental animal models are developed accurately to represent cellular and molecular changes associated with the initiation and development of human ovarian cancer. Accurate experimental models have significant potential in facilitating the development of better methods for early detection and treatment of ovarian cancer. Several animal models of ovarian cancer have been reported, including manipulation of various reproductive factors or exposure to carcinogens. The latest advance in ovarian cancer modeling is using genetically engineered mice.

Humoral Immunity in Heart Failure

2019 ◽  
Vol 19 (1) ◽  
pp. 14-18 ◽  
Author(s):  
Amrita Sarkar ◽  
Khadija Rafiq
Keyword(s):  
Heart Failure ◽  
Humoral Immunity ◽  
Treatment Strategies ◽  
Pathophysiological Mechanism ◽  
Peripheral Vascular ◽  
Cardiac Inflammation ◽  
Humoral Immune ◽  
Humoral Immune System ◽  
New Treatment ◽  
Immunity Function

Cardiovascular Disease (CVD) is a class of diseases that involve disorders of heart and blood vessels, including hypertension, coronary heart disease, cerebrovascular disease, peripheral vascular disease, which finally lead to Heart Failure (HF). There are several treatments available all over the world, but still, CVD and heart failure became the number one problem causing death every year worldwide. Both experimental and clinical studies have shown a role for inflammation in the pathogenesis of heart failure. This seems related to an imbalance between pro-inflammatory and anti-inflammatory cytokines. Cardiac inflammation is a major pathophysiological mechanism operating in the failing heart, regardless of HF aetiology. Disturbances of the cellular and humoral immune system are frequently observed in heart failure. This review describes how B-cells play a specific role in the heart failure states. There is an urgent need to identify novel therapeutic targets and develop advanced therapeutic strategies to combat the syndrome of HF. Understanding and describing the elements of the humoral immunity function are essential and may suggest potential new treatment strategies.

scholarly journals Emerging Natural-Product-Based Treatments for the Management of Osteoarthritis

Antioxidants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 265
Author(s):  
Maria-Luisa Pérez-Lozano ◽  
Annabelle Cesaro ◽  
Marija Mazor ◽  
Eric Esteve ◽  
Sabine Berteina-Raboin ◽  
...  
Keyword(s):  
Bone Resorption ◽  
Natural Product ◽  
Treatment Strategies ◽  
Cartilage Degradation ◽  
Therapeutic Strategies ◽  
Clinical Models ◽  
Osteoarthritic Joint ◽  
Dietary Components ◽  
New Treatment ◽  
Review Current

Osteoarthritis (OA) is a complex degenerative disease in which joint homeostasis is disrupted, leading to synovial inflammation, cartilage degradation, subchondral bone remodeling, and resulting in pain and joint disability. Yet, the development of new treatment strategies to restore the equilibrium of the osteoarthritic joint remains a challenge. Numerous studies have revealed that dietary components and/or natural products have anti-inflammatory, antioxidant, anti-bone-resorption, and anabolic potential and have received much attention toward the development of new therapeutic strategies for OA treatment. In the present review, we provide an overview of current and emerging natural-product-based research treatments for OA management by drawing attention to experimental, pre-clinical, and clinical models. Herein, we review current and emerging natural-product-based research treatments for OA management.

scholarly journals The Optimal First-Line Therapy ofHelicobacter pyloriInfection in Year 2012

2012 ◽  
Vol 2012 ◽  
pp. 1-8 ◽  
Author(s):  
Chao-Hung Kuo ◽  
Fu-Chen Kuo ◽  
Huang-Ming Hu ◽  
Chung-Jung Liu ◽  
Sophie S. W. Wang ◽  
...  
Keyword(s):  
Rescue Therapy ◽  
Treatment Strategies ◽  
Sequential Therapy ◽  
Antibiotics Resistance ◽  
First Line ◽  
First Line Therapy ◽  
Metronidazole Resistance ◽  
Rescue Treatment ◽  
New Treatment ◽  
H Pylori

This paper reviews the literature about first-line therapies forH. pyloriinfection in recent years. First-line therapies are facing a challenge because of increasing treatment failure due to elevated antibiotics resistance. Several new treatment strategies that recently emerged to overcome antibiotic resistance have been surveyed. Alternative first-line therapies include bismuth-containing quadruple therapy, sequential therapy, concomitant therapy, and hybrid therapy. Levofloxacin-based therapy shows impressive efficacy but might be employed as rescue treatment due to rapidly raising resistance. Rifabutin-based therapy is also regarded as a rescue therapy. Several factors including antibiotics resistance, patient compliance, and CYP 2C19 genotypes could influence the outcome. Clinicians should use antibiotics according to local reports. It is recommended that triple therapy should not be used in areas with high clarithromycin resistance or dual clarithromycin and metronidazole resistance.

scholarly journals “Empowering” Cardiac Cells via Stem Cell Derived Mitochondrial Transplantation- Does Age Matter?

2021 ◽  
Vol 22 (4) ◽  
pp. 1824
Author(s):  
Matthias Mietsch ◽  
Rabea Hinkel
Keyword(s):  
Stem Cells ◽  
Stem Cell ◽  
Treatment Strategies ◽  
Cardiac Cells ◽  
Aging Effects ◽  
Beneficial Effects ◽  
Micro Rnas ◽  
New Treatment

With cardiovascular diseases affecting millions of patients, new treatment strategies are urgently needed. The use of stem cell based approaches has been investigated during the last decades and promising effects have been achieved. However, the beneficial effect of stem cells has been found to being partly due to paracrine functions by alterations of their microenvironment and so an interesting field of research, the “stem- less” approaches has emerged over the last years using or altering the microenvironment, for example, via deletion of senescent cells, application of micro RNAs or by modifying the cellular energy metabolism via targeting mitochondria. Using autologous muscle-derived mitochondria for transplantations into the affected tissues has resulted in promising reports of improvements of cardiac functions in vitro and in vivo. However, since the targeted treatment group represents mainly elderly or otherwise sick patients, it is unclear whether and to what extent autologous mitochondria would exert their beneficial effects in these cases. Stem cells might represent better sources for mitochondria and could enhance the effect of mitochondrial transplantations. Therefore in this review we aim to provide an overview on aging effects of stem cells and mitochondria which might be important for mitochondrial transplantation and to give an overview on the current state in this field together with considerations worthwhile for further investigations.

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