A practical pH-compatible fluorescent sensor for hydrazine in soil, water and living cells

The Analyst ◽  
2020 ◽  
Vol 145 (22) ◽  
pp. 7380-7387 ◽  
Author(s):  
Huming Yan ◽  
Fangjun Huo ◽  
Yongkang Yue ◽  
Jianbin Chao ◽  
Caixia Yin

The excellent water solubility of hydrazine (N2H4) allows it to easily invade the human body through the skin and respiratory tract, thereby damaging human organs and the central nervous system.

Author(s):  
Elias Manca

AbstractSystemic lupus erythematosus is a complex immunological disease where both environmental factors and genetic predisposition lead to the dysregulation of important immune mechanisms. Eventually, the combination of these factors leads to the production of self-reactive antibodies that can target any organ or tissue of the human body. Autoantibodies can form immune complexes responsible for both the organ damage and the most severe complications. Involvement of the central nervous system defines a subcategory of the disease, generally known with the denomination of neuropsychiatric systemic lupus erythematosus. Neuropsychiatric symptoms can range from relatively mild manifestations, such as headache, to more severe complications, such as psychosis. The evaluation of the presence of the autoantibodies in the serum of these patients is the most helpful diagnostic tool for the assessment of the disease. The scientific progresses achieved in the last decades helped researchers and physicians to discover some of autoepitopes targeted by the autoantibodies, although the majority of them have not been identified yet. Additionally, the central nervous system is full of epitopes that cannot be found elsewhere in the human body, for this reason, autoantibodies that selectively target these epitopes might be used for the differential diagnosis between patients with and without the neuropsychiatric symptoms. In this review, the most relevant data is reported with regard to mechanisms implicated in the production of autoantibodies and the most important autoantibodies found among patients with systemic lupus erythematosus with and without the neuropsychiatric manifestations.


Nanoscale ◽  
2017 ◽  
Vol 9 (42) ◽  
pp. 16281-16292 ◽  
Author(s):  
Tzu-Wei Wang ◽  
Kai-Chieh Chang ◽  
Liang-Hsin Chen ◽  
Shih-Yung Liao ◽  
Chia-Wei Yeh ◽  
...  

Functionalised self-assembling nanopeptide hydrogel mediates angiogenesis and neurogenesis for injured brain tissue regeneration.


Author(s):  
Siddharthan Chandran ◽  
Alastair Compston

Clinicians suspect demyelination when episodes reflecting damage to white matter tracts within the central nervous system occur in young adults. The paucity of specific biological markers of discrete demyelinating syndromes places an emphasis on clinical phenotype—temporal and spatial patterns—when classifying demyelinating disorders. The diagnosis of multiple sclerosis, the most common demyelinating disorder, becomes probable when these symptoms and signs recur, involving different parts of the brain and spinal cord. Other important demyelinating diseases include post-infectious neurological disorders (acute disseminated encephalomyelitis), demyelination resulting from metabolic derangements (central pontine myelinosis), and inherited leucodystrophies that may present in children or in adults. Accepting differences in mechanism, presentation, and treatment, two observations can usefully be made when classifying demyelinating disorders. These are the presence or absence of inflammation, and the extent of focal vs. diffuse demyelination. Multiple sclerosis is prototypic for the former, whereas dysmyelinating disorders, such as leucodystrophies are representative of the latter....


Author(s):  
Ariel Y. Deutch ◽  
Robert H. Roth

Chapter 2 describes the neurochemical organization of the brain. It summarizes the diverse types of molecules that neurons in the brain use as neurotransmitters and neurotrophic factors, and how these molecules are synthesized and metabolized. The chapter also presents the array of receptor proteins through which these molecules regulate target neuron functioning and the reuptake proteins that generally terminate the neurotransmitter signal. Today a large majority of all drugs used to treat psychiatric disorders, as well as most drugs of abuse, still have as their initial targets proteins involved directly in neurotransmitter function.


Author(s):  
Keith L. Ligon ◽  
Karima Mokhtari ◽  
Thomas W. Smith

This chapter presents the most up-to-date classification of tumors of the nervous system, based on the histological appearance of the neoplasm and also on information derived from cytogenetics and molecular biology, now recognized worldwide as increasingly important for more precise diagnosis, prognosis, and therapeutic guidance. The chapter provides a detailed morphologic description of each major tumor type, with numerous illustrations of macroscopic and microscopic lesions. First we consider primary tumors of the nervous system, including those derived from neuroepithelial tissue (astrocytic, oligodendroglial, ependymal, neuronal, and glioneuronal), pineal tissue, peripheral nerve sheath, and meninges. Next lymphomas, hematopoietic neoplasms, and secondary (metastatic) neoplasms are described.


2009 ◽  
pp. 543-550
Author(s):  
John N. Caviness

LLRs and the silent period are EMG phenomena that reflect the complex interplay of spinal, brain stem, and cortical influences in motor control. These techniques have been applied to the study of disorders of motor control such as Parkinson’s disease, Huntington’s disease, and dystonia. Abnormalities of these reflexes may help to detect lesions of the central nervous system.


Author(s):  
Jonathan Price

Fibromyalgia (FM), one of the chronic widespread pain syndromes, and chronic fatigue syndrome (CFS) are important and common conditions. They are considered together here because they are commonly comorbid and because of their similarities—they are long-term conditions with a relatively poor prognosis; central nervous system mechanisms and deconditioning play an important role in aetiology; graded exercise and psychological treatments have an important role in management; and comorbid mental disorders are common and have an adverse impact on important outcomes, including disability and chronicity. The prevalence of FM is rising, while that of CFS is declining. There is increased acceptance of the pivotal role of central nervous system factors in FM, while in CFS, the positions of different aetiological ‘movements’ appear bitterly entrenched. The main focus of this chapter is on FM and, in particular, key aspects of aetiology and treatment, especially those relating to the central nervous system.


2014 ◽  
Vol 6 (9) ◽  
pp. 855-861 ◽  
Author(s):  
A. R. Fernandes ◽  
D. M. Chari

We describe a multicellular neural model to study nanoparticle uptake and gene delivery, using stem cell derived cell populations.


Author(s):  
Michael J. Aminoff

In 1811, Bell had printed privately a monograph titled Idea of a New Anatomy of the Brain. In it, Bell correctly showed that the anterior but not the posterior roots had motor functions. François Magendie subsequently showed that the anterior roots were motor, and the posterior roots were sensory. This led to a dispute about priority during which Bell republished some of his early work with textual alterations to support his claims. Bell was involved in a similar dispute with Herbert Mayo concerning the separate functions of the fifth (sensory) and seventh (motor) cranial nerves, and Mayo today is a forgotten man. In both instances, Bell deserves credit for the concepts and initial experimental approach, and Magendie and Mayo deserve credit for obtaining and correctly interpreting the definitive experimental findings.


Author(s):  
Ryan Palacio ◽  
Megan Clinton ◽  
Albert Yeung ◽  
Meredith Brooks ◽  
Herodotos Ellinas

This chapter contains 49 questions relevant for the Pediatric Subspecialty Exam about the topic of the central nervous system.


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