scholarly journals Management of patients in the acute stage of cerebral infarction-Present status of rt-PA treatment, and the role of the Japan Stroke Society-

Nosotchu ◽  
2006 ◽  
Vol 28 (4) ◽  
pp. 643-648 ◽  
Author(s):  
Yukito Shinohara
Keyword(s):  
Cerebral Infarction ◽  
Present Status ◽  
Acute Stage

scholarly journals The Vulnerability of Vessels Involved in the Role of Embolism and Hypoperfusion in the Mechanisms of Ischemic Cerebrovascular Diseases

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Yong Peng Yu ◽  
Lan Tan
Keyword(s):  
Cerebral Infarction ◽  
Dominant Role ◽  
Cerebrovascular Diseases ◽  
Effective Care ◽  
Cerebrovascular Events ◽  
Accurate Definition ◽  
Ischemic Cerebrovascular Diseases ◽  
Vascular Stenosis

Accurate definition and better understanding of the mechanisms of stroke are crucial as this will guide the effective care and therapy. In this paper, we review the previous basic and clinical researches on the causes or mechanisms of ischemic cerebrovascular diseases (ICVD) and interpret the correlation between embolism and hypoperfusion based on vascular stenosis and arterial intimal lesions. It was suggested that if there is no embolus (dynamic or in situ emboli), there might be no cerebral infarction. Three kinds of different clinical outcomes of TIA were theoretically interpreted based on its mechanisms. We suppose that there is a correlation between embolism and hypoperfusion, and which mechanisms (hypoperfusion or hypoperfusion induced microemboli) playing the dominant role in each type of ICVD depends on the unique background of arterial intimal lesions (the vulnerability of vessels). That is to say, the vulnerability of vessels is involved in the role of embolism and hypoperfusion in the mechanisms of ischemic cerebrovascular diseases. This inference might enrich and provide better understandings for the underlying etiologies of ischemic cerebrovascular events.

scholarly journals Enhanced Antimycobacterial Response to RecombinantMycobacterium bovis BCG Expressing Latency-Associated Peptide

2001 ◽  
Vol 69 (11) ◽  
pp. 6676-6682 ◽  
Author(s):  
Ben G. Marshall ◽  
Arun Wangoo ◽  
Peadar O'Gaora ◽  
H. Terry Cook ◽  
Rory J. Shaw ◽  
...  
Keyword(s):  
Detrimental Effect ◽  
Transforming Growth Factor ◽  
Initial Response ◽  
Transforming Growth Factor Β ◽  
Mycobacterial Infection ◽  
Acute Stage ◽  
Long Term Memory ◽  
Memory Response

ABSTRACT With a view to exploring the role of transforming growth factor β (TGF-β) during mycobacterial infection, recombinant clones of bacillus Calmette-Guérin (BCG) were engineered to express the natural antagonist of TGF-β, latency-activated peptide (LAP). Induction of TGF-β activity was reduced when macrophages were infected with BCG expressing the LAP construct (LAP-BCG). There was a significant reduction in the growth of LAP-BCG in comparison to that of control BCG following intravenous infection in a mouse model. The enhanced control of mycobacterial replication was associated with an increase in the production of gamma interferon by splenocytes challenged during the acute stage of infection but with a diminished recall response assessed after 13 weeks. Organ weight and hydroxyproline content, representing tissue pathology, were also lower in mice infected with LAP-BCG. The results are consistent with the hypothesis that TGF-β has a detrimental effect on mycobacterial immunity. While a reduction in TGF-β activity augments the initial response to BCG vaccination, early bacterial clearance may adversely affect the induction of a long-term memory response by LAP-BCG.

The role of craniectomy in the treatment of chronic subdural hematomas

1980 ◽  
Vol 52 (6) ◽  
pp. 776-781 ◽  
Author(s):  
George Tyson ◽  
W. Ellis Strachan ◽  
Peter Newman ◽  
H. Richard Winn ◽  
Albert Butler ◽  
...  
Keyword(s):  
Cerebral Infarction ◽  
Chronic Subdural Hematoma ◽  
Neurological Deterioration ◽  
Neurological Dysfunction ◽  
Consecutive Series ◽  
Content Type ◽  
Significant Clinical Improvement ◽  
Acute Neurological Deterioration ◽  
Fine Print

✓ A consecutive series of 48 adult patients with a chronic subdural hematoma is reported. These patients were treated according to a protocol consisting of a sequence of conventional surgical procedures ranging from simple burr-hole drainage to craniotomy and subdural membranectomy. Seven patients (15%) continued to demonstrate severe neurological dysfunction, or suffered acute neurological deterioration after completion of this protocol. However, after undergoing excision of the cranial vault overlying the hematoma site, six of these seven patients demonstrated a significant clinical improvement. Based on analysis of these seven cases, the authors suggest that craniectomy be considered in those patients who suffer a symptomatic reaccumulation of subdural fluid following craniotomy and membranectomy, or who demonstrate further neurological deterioration as a result of cerebral swelling subjacent to the hematoma site. However, this procedure probably has no efficacy once extensive cerebral infarction has occurred.

scholarly journals Noninvasive assessment of ischemic penumbra by using MR-SWI during the acute phase of cerebral infarction: a comparison to PWI

2015 ◽  
Vol 42 (S1) ◽  
pp. S36-S36
Author(s):  
S Luo ◽  
X Wu ◽  
F Deng ◽  
Y Zhang ◽  
J Miao ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Cerebral Infarction ◽  
Cerebral Blood Volume ◽  
Unmet Need ◽  
Acute Stage ◽  
Ischemic Penumbra ◽  
Resonance Imaging ◽  
Stroke Evolution ◽  
Work Up

Background: Assessment of ischemic penumbra during the acute stage of cerebral infarction is crucial for a decision to initiate thrombolytic therapy and for predicting stroke evolution. Although controversial as a perfect equivalence to penumbra, perfusion weighted imaging (PWI)-diffusion weighted imaging (DWI) mismatch may predict the response to thrombolysis. Due to the reliance on contrast agents in PWI, noninvasive alternatives remain an unmet need. Methods: We herein investigate the potentials of SWI as an alternative to PWI in defining ischemic penumbra and in predicting stroke outcome. A multimodal magnetic resonance imaging work-up which includes conventional magnetic resonance imaging sequences (T1WI, T2WI and FLAIR), DWI, PWI and SWI was performed. The Alberta Stroke Programme Early CT Score (ASPECTS) was used to evaluate the changes in DWI, SWI and PWI. Results: The mismatch of SWI-DWI was comparable with that of PWI-DWI (p>0.05). Furthermore, the grade of prominent vein and the cerebral blood volume in the ipsilateral brain tissue were positively correlated. Conclusions: SWI can be used as a noninvasive alternative to identify occlusive arteries and to evaluate the ischemic penumbra. The susceptibility vein sign may represent thrombosis in arteries whereby being helpful to identify responsible blood vessels in ischemic stroke.

scholarly journals Precision agriculture in Australia: present status and recent developments

2013 ◽  
Vol 33 (3) ◽  
pp. 575-588 ◽  
Author(s):  
Robert Bramley ◽  
Sam Trengove
Keyword(s):  
Food Security ◽  
Precision Agriculture ◽  
Present Status ◽  
Active Role ◽  
Value Chains ◽  
Spatially Distributed ◽  
Recent Developments ◽  
Fine Tune ◽  
Reduced Risk

A brief account of the present status of Precision Agriculture (PA) in Australia is presented, and areas of opportunity in the grains, sugar and wine industries are identified. In particular, these relate to the use of spatially-distributed experimentation to fine-tune management so as to achieve production efficiencies, reduced risk of environmental impact and enhanced food security, and the management of crop quality through selective harvesting and product streaming. The latter may be an important avenue by which farmers can take a more active role in the off-farm part of agricultural value chains. The important role of grower groups in facilitating PA adoption is also discussed.

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