By W. Abe. Louisiana State University at Baton Rouge.
Sustained effects of gene-activated matrices of recombinant human ciliary neurotrophic (rhC- after CNS injury discount celexa 20mg with visa. Intracisternal basic fi- growth in the rat corticospinal tract after injury cheap 10 mg celexa mastercard. Proc broblast growth factor enhances functional recovery Natl Acad Sci USA 1999; 96:13486–13490 buy celexa 40 mg without prescription. Middlemiss P celexa 20mg with visa, Glasky A, Rathbone M, Werstuik E, marker of neuronal sprouting following focal cere- Hindley S, Gysbers J. Proc Natl Acad Sci USA 1997; rivative, enhances nerve growth factor mediated 94:8179–8184. Kordower J, Palfi S, Chen E, Ma S, Comella C, regeneration by MAG and myelin via a cAMP-de- Sendera T, Cochran E, Mufson E, Penn R, Goetz pendent mechanism. Overcoming inhibitors or regeneration in tricular glial-derived neurotrophic factor treatment myelin. Restorative surgery of the central nerv- survival of axotomized septal neurons and the re- ous system by means of tissue engineering using generation of their axons in adult rats. Kordower J, Emborg M, Bloch J, Ma S, Chu Y, Lev- Biologic Adaptations and Neural Repair 139 enthal L. Glia 2000; creases cell proliferation and neurogenesis in the 31:232–240. Shors T, Miesegaes G, Beylin A, Zhao M, Rydel T, rat spinal cord is promoted by olfactory ensheathing Gould E. Identification of a human Physical activity increases mRNA for brain-derived olfactory ensheathing cell that can affect transplant- neurotrophic factor and nerve growth factor in rat mediated remyelination of demyelinated CNS ax- brain. Ethical and social considerations of duces FGF-2 and its mRNA in the hippocampus. Stem cells and pattern formation in the increases in the number of new neurons in the adult nervous system: The possible versus the actual. Freed C, Breeze R, Mazziotta J, Rosenberg NL, factor-2/brain-derived neurotrophic factor-associated Schneck SA, Kriek E, Qi JX, Lone T, Zhang YB, maturation of new neurons generated from adult hu- Snyder JA, Wells TH. Cortical neurogenesis in adult rats after transient fetal mesencephalic tissue into the caudate nucleus middle cerebral artery occlusion. Lindvall O, Sawle G, Widner H, Rothwell J, Bjork- ata T, Okano H, Hori M, Matsumoto M. Neuroge- lund A, Brooks D, Brundin P, Frackowiak R, Mars- nesis by progenitor cells in the ischemic adult rat den C, Odin P. Fricker R, Carpenter M, Winkler C, Greco C, Gates ropathol Appl Neurobiol 1999; 25:351–362. Cell replacement therapies ronal differentiation of human neural progenitor for central nervous system disorders. Helt C, Hoernig G, Albeck D, Gerhardt G, Ickes B, W, Kao R, Dillon S, Winfield H, Culver S, Tro- Reyland M, Quissell D, Strömberg I, Granholm AC. Progenitor cell biology: Im- Isacson O, Palmer P, Kott S, Edge A, Penney D, plications for neural regeneration. Hauser R, Furtado S, Cimino C, Delgado H, Eich- 140 Neuroscientific Foundations for Rehabilitation ler S, Schwartz S, Scott D, Nauert G, Soety E, Sossi 176. Polysialylated neu- LeFaucher JP, Bourdet P, Baudic B, Gaura V, Mai- ral cell adhesion molecule-positive CNS precursors son P, Haddad B. Chang A, Nishiyama A, Peterson J, Prineas J, Trapp rante R, Salat D, Van der Kouwe A, Jenkins B, Dale B. Regional and progressive thinning of the cortical adult human brain and multiple sclerosis lesions. Shin J, Fricker-Gates R, Perez F, Leavitt B, Zu- function after cortical injury. Cellular and molecular diversi- Neural grafting to experimental neocortical infarcts ties of mammalian skeletal muscle fibers. Rev Phys- improves behavioral outcome and reduces thalamic iol Biochem Pharmacol 1990; 116:1–76. Synaptic plasticity in cor- sociated with functional impairment and physical tical systems. Effects of altered loading states on mus- deprivation prevents integration of neocortical grafts cle plasticity: what have we learned from rodents?
We have reproducibly created patterned neuronal circuits and shown that we can successfully measure the signals from these circuits in our deﬁned in vitro culture sys- tem (Das et al buy celexa 10mg low price. We have also modeled modes of cell- cell communication that could be monitored and investigated the electrical properties of the neuronal circuits in contact with the designed biological interfaces in these sys- tems (Peterson buy cheap celexa 40 mg line, 2001; Jung et al buy cheap celexa 20mg online. One application of this concept is for drug development or new biomedical diagnostics 20 mg celexa with visa. These function- based test-beds could also detect drug e‰cacy or toxicity through e¤ects ranging from the obvious (cell death) to those that are more subtle (impairment of function). This wide range of responses can be measured because cells and the networks they form are exceedingly sensitive to certain changes in their environment. We have developed surface chemistry that can be used to create templates that en- able the patterning of discrete cells and networks of cells in culture (Stenger et al. This advance allows the construction of a test-bed that measures changes in the po- tential of cells and/or their processes. Thus, any changes in the electrical signals upon exposure to a compound could be detected. Hickman under development include ion-sensitive electrodes (Solsky, 1990; Uhlig et al. Most assays rely on the fact that the agonist is known and are targeted for a speciﬁc compound. Preliminary work has been reported on measuring signals from neurons using solid-state devices (Regher et al. It would be beneﬁcial to develop sensors to function as precursors to these epidemiological studies. In vitro cell cultures of embryonic rat tissue have been used to study rudimentary cellular organization and communication. Neurons in culture are generally disorga- nized in the sense that the connections between the cells are not controllable. Histor- ically, this has made it di‰cult to relate speciﬁc signals to speciﬁc functions, as well as to make the system reproducible. If one could control the connections between liv- ing neurons, new paradigms in in vitro cellular networks could be realized. A major beneﬁt would come from sorting out all of these complex connections and arrange- ments and making them reproducible. We are using a reductionist approach to in vitro cellular networks by using the minimum number of neurons to construct simple reproducible circuits and connecting them to silicon devices. These new hybrid neu- roelectric devices can then be connected in a multitude of conﬁgurations, much like the components and devices that comprise computational devices. The most di‰cult tasks in developing the fabrication protocol are controlling the placement of neurons, the processes, and the number and placement of synapses. Building a network composed of neurons into the preferred synaptic conﬁguration requires high-resolution surface patterns that guide the geometry and outgrowth of the elements of the circuit. The use of hippocampal neurons is of particular interest for studies of cell-cell communication because the hippocampus is thought to play a central role in learning and memory function. It is known that the ability of neuronal processes to extend to their targets is dependent on adhesion to underlying substrata, which in vivo appears to be spatially and temporally patterned. The ability to culture mammalian neurons on patterned substrata would allow the investigation, and pos- sible control, of the factors involved in the formation of basic neuronal circuits. The use of surface modiﬁcation techniques allows the interface between biological and nonbiological materials to be tailored independently of the bulk composition of the nonbiological material. We are using SAMs to control the intrinsic and geomet- ric properties of surfaces in contact with biological systems. A self-assembled mono- layer (SAM) is a modifying layer composed of organic molecules, one molecule Building Minimalistic Hybrid Neuroelectric Devices 207 thick, that can spontaneously form strong interactions or covalent bonds with reac- tive groups on an exposed surface. The utilization of SAMs for modifying surfaces has been demonstrated on silicon dioxide (Stenger et al. A large variety of functional groups or a combination of functional groups can be located on the terminal opposite the attachment point of a SAM, and the chemical composition can be manipulated to systematically vary the surface free energy (Sten- ger et al. We have used the geometric control of the surface composition a¤orded by SAMs to create in vitro circuits of mammalian neurons (Stenger et al. Patterning of surfaces to control the growth of neurons and other cells in culture has been achieved by numerous investigators (Stenger et al.
Again generic celexa 10 mg with amex, here in the West we have been trained to place our confidence in purely physical cures buy generic celexa 20 mg on line, disregarding the role that the mind plays in the healing equation purchase celexa 10 mg online. Another Western perspective is that Qi does not exist buy celexa 20 mg online, because it cannot be found on X-rays or CAT scans. To divorce one from the other is to treat the symptoms, but not the root cause of the pain. On the positive side, patient empowerment and self-care, as well as medical cost-reduction possibilities have a special potential to transform medicine as it is practiced in the Western world. In external Qigong, the practitioner or Qigong doctor does non- touch energy assessment of the patient and actually projects or conducts Qi, in a treatment mode, to the patient. In assessment, rather than asking questions, taking pulses, observing the tongue, palpating reflexes, and ordering lab tests, the practitioner uses concentration, intu- ition, and reading of the Qi with off-the-body diagnostic scanning. In treatment, the practitioner actually projects the Qi to another to have a clinical effect. However, research is revealing that there may be authentic, explainable, and demonstrable natural laws and mecha- nisms in operation during these events. Therapeutic Touch, an assessing and heal- ing technique that uses an off the body technique called unruffling the field has experienced a tremendous swell of interest in the nursing community. The re- search of developer Delores Krieger, RN, demonstrated that in-vivo hemoglobin values (an essential blood-quality component) were significantly affected by the administration of this energy-based technique. An October 1986 article in the Los Angeles Times tells the story of the Beijing practice of Master Xun Yunkun who treats medical cases including terminal can- cer and paralysis following stroke with Qi projection. There is a tremendous wave of interest in this aspect of Qigong in the Western world and a number of very respectable research organizations are currently ex- pending substantial budgets on Qigong-related projects. There is a tremendous amount of research attempting to explain this phenomenon. Zheng Rong, and Stanford physicist Professor William Tiller are doing a collaborative research project on biolumines- cence and Qigong with a focus on satisfying the rational research model. In 1988, 128 research papers were presented at the First World Conference for the Aca- demic Exchange of Medical Qigong that was sponsored by the China Medical As- sociation, Chinese Ministry of Health, China Qigong Research Institutes, and the Beijing College of Traditional Chinese Medicine and was attended by representa- tives from 17 countries. It would be a shame, however, if we became so dependent upon their abilities that we ignored the benefits derived from self-applied Qigong techniques. In my own practice, I have accepted clients who, having failed to make any noticeable progress in months of physical therapy, began to despair of ever regain- ing their former health. Students, who after attending physical therapy sessions for long periods of time, often come to my classes after experiencing strokes, heart attacks, seizures, and various bodily injury. While their progress is due, in part, to the diligent work of dedicated therapy professionals, they have not usually had the mental or spiritual component of their injuries or illnesses addressed. After attending the seminar, she signed up at my school and studied hard for three years. Lots of energy, almost unbelievable range-of-motion im- provement, arthritis that had just about disappeared, and a positive outlook on life. Some of the other exercise modules showed increased falls, merely be- cause the patients were moving more. More than 30 percent of people aged 65 or older experience at least one fall per year, and 15 percent of those falls result in serious injuries. The last fig- ures are from 1984—before the aging trend got into full swing, and before the recent inflation of medical costs. Unlike anecdotal evidence that the skeptical can shrug off as Eastern mysti- cism, this study involved eight medical facilities, including some of the most es- teemed names in Western medical science: Harvard, Yale, Centers for Disease Control, Washington University School of Medicine, and Emory University. This groundbreaking study lasted 12 years, resulting in final publication of results in 1984. By 1989, the NIA came together with the National Center for Nursing Research and the Centers for Disease Control to issue a Request for Applications. The studies took place over the ensuing three years, concluding in March 1993. Wolf forged ahead with a more detailed report for the Journal of the American Geriatric Society. After some frustrating delays in the process, the report finally appeared in the May 1996 issue of the Journal.
10 of 10 - Review by W. Abe
Votes: 196 votes
Total customer reviews: 196