scholarly journals Announcing the launch of a new journal: Animal Models and Experimental Medicine

2018 ◽  
Vol 1 (1) ◽  
pp. 1-1
Author(s):  
Chuan Qin
2018 ◽  
Author(s):  
Jesse T Kaye ◽  
Daniel E. Bradford ◽  
Katherine Magruder ◽  
John Joseph Curtin

Stressors clearly contribute to addiction etiology and relapse in humans, but our understanding of specific mechanisms remains limited. Rodent models of addiction offer the power, flexibility, and precision necessary to delineate the causal role and specific mechanisms through which stressors influence alcohol and other drug use. This review describes a program of research using startle potentiation to unpredictable stressors that is well-positioned to translate between animal models and clinical research with humans on stress neuroadaptations in addiction. This research rests on a solid foundation provided by three separate pillars of evidence from 1) rodent behavioral neuroscience on stress neuroadaptations in addiction, 2) rodent affective neuroscience science on startle potentiation, and 3) human addiction and affective science with startle potentiation. Rodent stress neuroadaptation models implicate adaptations in corticotropin-releasing factor and norepinephrine circuits within the central extended amygdala following chronic alcohol and other drug use that mediate anxious behaviors and stress-induced reinstatement among drug-dependent rodents. Basic affective neuroscience indicates that these same neural mechanisms are involved in startle potentiation to unpredictable stressors in particular (vs predictable stressors). We believe that synthesis of these evidence bases should focus us on the role of unpredictable stressors in addiction etiology and relapse. Startle potentiation in unpredictable stressor tasks is proposed to provide an attractive and flexible testbed to encourage tight translation and reverse translation between animal models and human clinical research on stress neuroadaptations. Experimental medicine approaches focused on unpredictable stressors holds high promise to identify, repurpose, or refine pharmacological and psychosocial interventions for addiction.


2018 ◽  
Vol 72 ◽  
pp. 686-700
Author(s):  
Katarzyna Sztuka ◽  
Daria Orszulak-Michalak ◽  
Magdalena Jasińska-Stroschein

Pulmonary hypertension (PH) is a rare disorder with a severe course. Despite significant progress in diagnosis and therapy, PH is an incurable disease with a high mortality rate. Current pharmacotherapy improves the patient’s quality of life and prolongs his/her longevity, but it does not completely reverse pathological and haemodynamic changes. This might result from the multifactorial pathomechanism of the disease, which includes multiple signaling pathways. There is a need to develop novel therapies. In order to achieve this purpose, preclinical experiments are made, for instance, on animal models. Identification of potentially effective substances for further evaluation in clinical trials is determined by a variety of factors, including the selection of an appropriate test model. An ideal animal model that fully reflects the human form of pulmonary hypertension has not been identified, as yet. Generally, studies are conducted on classical models, including the chronic hypoxia model (CH) and monocrotaline model (MCT). This study presents selected animal models of pulmonary hypertension, which are used in efficiency tests on potentially new drugs as well as a mechanism of action of PH inductors and both haemodynamic and histopathological changes, characteristic for each model. The technique and conditions for the induction of pulmonary hypertension are discussed for selected methods. The authors emphasized interspecific differences in experimental animals. The article also summarizes potential benefits and limitations of animal models of pulmonary hypertension in preclinical studies, with consideration given to the repeatability and predictability of results, the cost of experiments, the toxicity of PH inductors and the comparability between haemodynamic and histopathological changes, induced in animals, and changes in the clinical picture of pulmonary hypertension in humans.


2021 ◽  
Vol 22 (7) ◽  
pp. 3439
Author(s):  
Thomas Grewal ◽  
Carles Rentero ◽  
Carlos Enrich ◽  
Mohamed Wahba ◽  
Carsten A. Raabe ◽  
...  

Routine manipulation of the mouse genome has become a landmark in biomedical research. Traits that are only associated with advanced developmental stages can now be investigated within a living organism, and the in vivo analysis of corresponding phenotypes and functions advances the translation into the clinical setting. The annexins, a family of closely related calcium (Ca2+)- and lipid-binding proteins, are found at various intra- and extracellular locations, and interact with a broad range of membrane lipids and proteins. Their impacts on cellular functions has been extensively assessed in vitro, yet annexin-deficient mouse models generally develop normally and do not display obvious phenotypes. Only in recent years, studies examining genetically modified annexin mouse models which were exposed to stress conditions mimicking human disease often revealed striking phenotypes. This review is the first comprehensive overview of annexin-related research using animal models and their exciting future use for relevant issues in biology and experimental medicine.


Blood ◽  
2008 ◽  
Vol 112 (11) ◽  
pp. 4677-4677
Author(s):  
Soad Al Jaouni

Abstract Background: To the many profound changes we now face in health care, Complementary and Alternative Medicine (CAM) must be added as a major factor. There is evidence of the increasing use of CAM by patients diagnosed with cancer. Interest in CAM continues to grow at an exponential rate despite the advances made by conventional medicine. Given the increasing desire of cancer patients to use CAM, it is important that clinicians have a good understanding of the evidence available in this field and build a trust with their patients. Many oncologists are not familiar with CAM used by many of their patients. Aims: To report the effectiveness and safety of a natural experimental agent used with conventional therapy in a patient with Stage IV Hodgkin’s lymphoma refractory to treatment. Methods: An eight-years-old Saudi girl was diagnosed as Stage IV Hodgkin’s lymphoma with lung infiltration. The patient was started on chemotherapy (ABVD), and needed prolonged hospitalization due to weakness, loss of appetite, cachexia, dyspnea, cough, fever, and marked hepatosplenomegaly. She had six cycles of chemotherapy with a slight improvement in her general condition. However, she as considered refractory to conventional therapy. We were planning to refer her for bone marrow transplant. The patient was sent home to be readmitted for the seventh cycle of ABVD. Unfortunately, the patient’s general condition deteriorated and she was admitted to the Intensive Care Unit (ICU), with acute Respiratory Distress Syndrome (RDS). She was markedly unstable and required respiratory ventilation support. After discussions involving the parents, it was suggested to use an experimental natural remedy of proven efficacy in inducing apoptosis in tissue cultures and animals in our laboratories. On the fifth day in ICU, the patient was initiated with full dose ABVD combined with the natural remedy, classified as PM 701. Within 2 days, the patient became fully conscious, showed improved general condition and returned to the pediatric ward to continue her treatment. Results: After the seventh cycle of chemotherapy and the use of natural remedy, her general condition improved markedly with significant reduction of the hepatosplenomegaly and pleural effusions. Repeated CT scans of chest and abdomen showed marked regression of her disease. She had one more cycle of chemotherapy combined with PM 701 and assessment after the eighth cycle showed complete remission of her disease including in the lungs. This natural agent has been fully studied with animal models at the King Fahed Medical Research Center’s laboratory and showed potent selective apoptosis of cancer cells, effective and safe in animal models. Summary: Most childhood malignancy is curable with combined intensive conventional chemotherapy, however up to 30% may have relapse or be resistant to chemotherapy. We report in this case successful management with the combination of conventional therapy with experimental medicine (PM 701) in the treatment of refractory Hodgkin’s lymphoma, which needs further control studies in the future to prove the efficacy and safety to be used on oncology patients. Integration between chemotherapy and natural CAM should be under close supervision to ensure safety and effectiveness. Scientific research needs more effort to support this line of medicine.


2019 ◽  
Vol 42 ◽  
Author(s):  
Nicole M. Baran

AbstractReductionist thinking in neuroscience is manifest in the widespread use of animal models of neuropsychiatric disorders. Broader investigations of diverse behaviors in non-model organisms and longer-term study of the mechanisms of plasticity will yield fundamental insights into the neurobiological, developmental, genetic, and environmental factors contributing to the “massively multifactorial system networks” which go awry in mental disorders.


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