Potential for Disruption of Central Nervous System Tissue in Beef Cattle by Different Types of Captive Bolt Stunners

1999 ◽  
Vol 62 (4) ◽  
pp. 390-393 ◽  
Author(s):  
G. R. SCHMIDT ◽  
K. L. HOSSNER ◽  
R. S. YEMM ◽  
D. H. GOULD
Keyword(s):  
United States ◽  
Spinal Cord ◽  
Central Nervous System ◽  
Nervous System ◽  
Right Ventricle ◽  
Air Injection ◽  
Central Nervous System Tissue ◽  
Different Types ◽  
Central United States ◽  
The Right

The application of pneumatic-powered air injection stunners (PPAISs), pneumatic-powered stunners (PPSs), and cartridge-fired stunners (CFSs) in commercial beef slaughter plants was evaluated to determine the extent of dissemination of central nervous system tissue. Fifteen beef slaughter plants in the western and central United States were visited to observe stunning methods and the condition of the hearts at postmortem inspection. As inspectors performed the normal opening of the hearts, the research observer evaluated the contents of the heart for the presence of clots and/or visible tissue segments in the right ventricle. In eight plants where PPAISs were used, 33% of hearts examined (n = 1,050) contained large clots in the right ventricles. In the four plants where CFSs were used, 1% of the hearts (n = 480) contained detectable clots. In three plants where the newly modified PPSs were used, 12% of the hearts (n = 450) contained detectable clots. Large segments of spinal cord were detected, collected, photographed, and confirmed histologically from two hearts in a plant that used a PPAIS. Most of the material was found in a single right ventricle and was composed of 10 to 13 cm segments of spinal cord.

Comparison of Analytical Methods for the Detection of Central Nervous System Tissue in Ground Beef

2008 ◽  
Vol 71 (7) ◽  
pp. 1505-1509
Author(s):  
DONG GYUN LIM ◽  
CHEORUN JO ◽  
MOOHA LEE
Keyword(s):  
Spinal Cord ◽  
Central Nervous System ◽  
Nervous System ◽  
Western Blotting ◽  
Ground Beef ◽  
Enzyme Linked Immunosorbent Assay ◽  
Spongiform Encephalopathy ◽  
Spinal Cord Tissue ◽  
Central Nervous System Tissue ◽  
By Products

Bovine spongiform encephalopathy is most likely transmitted by the consumption of central nervous system tissue of infected cows. The objective of this study was to compare the sensitivity or limits of detection of two central nervous system tissue detection assays (glial fibrillary acidic protein enzyme-linked immunosorbent assay [ELISA] and neuron-specific enolase Western blotting assay) in by-products and ground beef. By-products including brain, spinal cord, and ileum were collected from the slaughterhouse and used for analyses with ELISA and Western blotting assays. Beef samples were prepared by mixing ground beef with different amounts of spinal cord tissue (0, 0.03, 0.06, and 0.1%) and were analyzed using the two central nervous system tissue detection methods. Both analytical assays were applicable in detecting central nervous system tissue in ground beef. However, the ELISA method was considered superior because of its ease of use, high sensitivity, and rapidity as compared with the Western blot method.

Primary and Metastatic Central Nervous System Malignancies

2015 ◽  
Author(s):  
Fabio M. Iwamoto ◽  
Howard A. Fine
Keyword(s):  
United States ◽  
Spinal Cord ◽  
Central Nervous System ◽  
Nervous System ◽  
Brain Metastases ◽  
Spinal Cord Compression ◽  
The United States ◽  
Cord Compression ◽  
Leptomeningeal Metastases ◽  
Cns Malignancies

About 13,000 deaths each year in the United States are attributed to primary central nervous system (CNS) malignancies. An estimated 20% of patients with cancer eventually develop clinically apparent CNS metastases, and an estimated 170,000 cases of brain metastases are diagnosed in the United States yearly. Autopsy studies suggest that as many as 50% of patients dying from advanced cancer may have metastasis to the CNS. This chapter provides an overview of primary and metastatic CNS malignancies with in-depth discussion of gliomas, primary CNS lymphoma, meningioma, brain metastases, leptomeningeal metastases, and metastatic epidural spinal cord compression. Discussions cover epidemiology, etiology, diagnosis, and treatment of gliomas, including surgery, radiotherapy, and chemotherapy for both newly diagnosed gliomas and recurrent gliomas. The epidemiology, diagnosis, treatment and prognosis for primary CNS lymphomas are reviewed, as well as the epidemiology, etiology, diagnosis, treatment, and prognosis for meningiomas. Epidemiology, diagnosis, and prognosis for brain metastases are briefly discussed, and the section on treatment includes surgery, stereotactic radiosurgery, and whole-brain radiotherapy for patients with three or fewer brain metastases. The sections on leptomeningeal metastases and metastatic epidural spinal cord compression cover diagnosis, treatment, and prognosis. This chapter contains 126 references.

scholarly journals LETHAL CARDIAC ANAPHYLAXIS IN THE RABBIT

1911 ◽  
Vol 14 (5) ◽  
pp. 476-496 ◽  
Author(s):  
J. Auer
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Right Ventricle ◽  
Guinea Pigs ◽  
Harmful Effect ◽  
Finger Nail ◽  
The Central Nervous System ◽  
Intact Rabbit ◽  
The Right ◽  
Lethal Anaphylaxis

Acute lethal anaphylaxis in the intact rabbit is caused by a failure of the heart. This failure of the heart is due to a change in the heart itself; it is peripheral and independent of the central nervous system for its production. This change in the heart is shown anatomically and functionally by decreased translucency, change in consistency, and by failure to respond to stimuli, and is probably to be classed as a chemical rigor. The rigor of the heart is most pronounced in the right ventricle, the wall of which may be gray, stiff, very tough to the finger nail, and non-irritable. Cardiac stimulants of the digitalis group seem to exert a harmful effect when injected in acute anaphylaxis. Blood coagulation is delayed; a loose clot forms after one half to two hours. Anti-anaphylaxis is produced when the animal does not succumb to the injection. When anaphylactic death is delayed for about one hour, a well developed rigor of the white muscles of the thigh, and of the diaphragm may occur while the animal is still alive. Reasons are brought forward to show the necessity of more caution in employing the word anaphylaxis. Friedberger's statement, that the lungs of guinea pigs dead from acute anaphylaxis are not characteristic of anaphylaxis for this animal, is shown to be baseless.

scholarly journals GCT-44. A CASE OF INTRACRANIAL GERMINOMA WHICH RECURRED IN THE SPINAL CORD 13 YEARS AFTER THE INITIAL TREATMENT

2020 ◽  
Vol 22 (Supplement_3) ◽  
pp. iii336-iii337
Author(s):  
Yasuhiro Murota ◽  
Juri Kiyokawa ◽  
Mariko Ishikawa ◽  
Hiroto Yamaoka ◽  
Satoshi Kaneko ◽  
...  
Keyword(s):  
Spinal Cord ◽  
Central Nervous System ◽  
Nervous System ◽  
Complete Remission ◽  
Cervical Spinal Cord ◽  
Gamma Knife Radiosurgery ◽  
Mass Lesion ◽  
Intracranial Germinoma ◽  
Whole Brain Radiation ◽  
The Right

Abstract BACKGROUND Central nervous system germinoma occurs most often in early teens, accounting for 15% of childhood brain tumors. Here, we report a case of germinoma which recurred in the spinal cord 13 years after complete remission. CASE DESCRIPTION: A 15-year-old boy presented with diabetes insipidus (DI). MRI showed a pineal gland tumor and ventriculomegaly. Biopsy was performed and the histological examinations revealed PLAP and c-kit positive pure germinoma. Ki67 LI was 64.4%. Gamma knife radiosurgery and 3 courses of ICE chemotherapy brought disappearance of the tumor. However, it recurred in lateral ventricles. Forty-Gray whole brain radiation resulted in complete remission of the tumor. For the sake of DI treatment and MRI examinations, he kept periodical visit to our hospital. Thirteen years later, when he was 28y/o, he complained paresthesia in the right upper extremity. MRI demonstrated gadolinium-enhance mass lesion in the cervical spinal cord. Recurrence of the tumor and multiple sclerosis were the principal differential diagnosis. Pulse steroid therapy did not make any change, and radiation therapy to the cervical spinal cord led to tumor disappearance. Nevertheless, the tumor recurred on the dorsal medulla oblongata one and a half years later. Biopsy of the tumor clarified that the tumor was germinoma. ICE chemotherapy which was limited to three courses due to severe bone marrow suppression was carried out. MRI proved no enhanced mass lesion in the central nervous system. DISCUSSION Germinoma may recur even after long period of remission, demonstrating that long-term follow-up is indispensable.

Primary and Metastatic Central Nervous System Malignancies

2011 ◽  
Author(s):  
Fabio M. Iwamoto ◽  
Howard A. Fine
Keyword(s):  
United States ◽  
Spinal Cord ◽  
Central Nervous System ◽  
Nervous System ◽  
Brain Metastases ◽  
Spinal Cord Compression ◽  
The United States ◽  
Cord Compression ◽  
Leptomeningeal Metastases ◽  
Cns Malignancies

About 13,000 deaths each year in the United States are attributed to primary central nervous system (CNS) malignancies. An estimated 20% of patients with cancer eventually develop clinically apparent CNS metastases, and an estimated 170,000 cases of brain metastases are diagnosed in the United States yearly. Autopsy studies suggest that as many as 50% of patients dying from advanced cancer may have metastasis to the CNS. This chapter provides an overview of primary and metastatic CNS malignancies with in-depth discussion of gliomas, primary CNS lymphoma, meningioma, brain metastases, leptomeningeal metastases, and metastatic epidural spinal cord compression. Discussions cover epidemiology, etiology, diagnosis, and treatment of gliomas, including surgery, radiotherapy, and chemotherapy for both newly diagnosed gliomas and recurrent gliomas. The epidemiology, diagnosis, treatment and prognosis for primary CNS lymphomas are reviewed, as well as the epidemiology, etiology, diagnosis, treatment, and prognosis for meningiomas. Epidemiology, diagnosis, and prognosis for brain metastases are briefly discussed, and the section on treatment includes surgery, stereotactic radiosurgery, and whole-brain radiotherapy for patients with three or fewer brain metastases. The sections on leptomeningeal metastases and metastatic epidural spinal cord compression cover diagnosis, treatment, and prognosis. This chapter contains 126 references.

Primary and Metastatic Central Nervous System Malignancies

2015 ◽  
Author(s):  
Fabio M. Iwamoto ◽  
Howard A. Fine
Keyword(s):  
United States ◽  
Spinal Cord ◽  
Central Nervous System ◽  
Nervous System ◽  
Brain Metastases ◽  
Spinal Cord Compression ◽  
The United States ◽  
Cord Compression ◽  
Leptomeningeal Metastases ◽  
Cns Malignancies

About 13,000 deaths each year in the United States are attributed to primary central nervous system (CNS) malignancies. An estimated 20% of patients with cancer eventually develop clinically apparent CNS metastases, and an estimated 170,000 cases of brain metastases are diagnosed in the United States yearly. Autopsy studies suggest that as many as 50% of patients dying from advanced cancer may have metastasis to the CNS. This chapter provides an overview of primary and metastatic CNS malignancies with in-depth discussion of gliomas, primary CNS lymphoma, meningioma, brain metastases, leptomeningeal metastases, and metastatic epidural spinal cord compression. Discussions cover epidemiology, etiology, diagnosis, and treatment of gliomas, including surgery, radiotherapy, and chemotherapy for both newly diagnosed gliomas and recurrent gliomas. The epidemiology, diagnosis, treatment and prognosis for primary CNS lymphomas are reviewed, as well as the epidemiology, etiology, diagnosis, treatment, and prognosis for meningiomas. Epidemiology, diagnosis, and prognosis for brain metastases are briefly discussed, and the section on treatment includes surgery, stereotactic radiosurgery, and whole-brain radiotherapy for patients with three or fewer brain metastases. The sections on leptomeningeal metastases and metastatic epidural spinal cord compression cover diagnosis, treatment, and prognosis. This chapter contains 126 references.

Confocal laser microscopy of impregnated central nervous system tissue

1988 ◽  
Vol 46 ◽  
pp. 94-95
Author(s):  
J.N. Turner ◽  
M. Siemens ◽  
D. Szarowski ◽  
D.N. Collins
Keyword(s):  
Electron Microscopy ◽  
Central Nervous System ◽  
Nervous System ◽  
Three Dimensional ◽  
Dimensional Structure ◽  
Confocal Laser ◽  
High Contrast ◽  
Central Nervous System Tissue ◽  
Tissue Samples ◽  
Reflected Light

A classic preparation of central nervous system tissue (CNS) is the Golgi procedure popularized by Cajal. The method is partially specific as only a few cells are impregnated with silver chromate usualy after osmium post fixation. Samples are observable by light (LM) or electron microscopy (EM). However, the impregnation is often so dense that structures are masked in EM, and the osmium background may be undesirable in LM. Gold toning is used for a subtle but high contrast EM preparation, and osmium can be omitted for LM. We are investigating these preparations as part of a study to develop correlative LM and EM (particularly HVEM) methodologies in neurobiology. Confocal light microscopy is particularly useful as the impregnated cells have extensive three-dimensional structure in tissue samples from one to several hundred micrometers thick. Boyde has observed similar preparations in the tandem scanning reflected light microscope (TSRLM).

Central Nerve System Impairment, AMA Guides, Sixth Edition: An Overview

2018 ◽  
Vol 23 (1) ◽  
pp. 10-13
Author(s):  
James B. Talmage ◽  
Jay Blaisdell
Keyword(s):  
Spinal Cord ◽  
Central Nervous System ◽  
Nervous System ◽  
Neurological Impairment ◽  
Sixth Edition ◽  
Central Nerve System ◽  
The Central Nervous System ◽  
The One ◽  
Nerve System ◽  
The Brain

Abstract Injuries that affect the central nervous system (CNS) can be catastrophic because they involve the brain or spinal cord, and determining the underlying clinical cause of impairment is essential in using the AMA Guides to the Evaluation of Permanent Impairment (AMA Guides), in part because the AMA Guides addresses neurological impairment in several chapters. Unlike the musculoskeletal chapters, Chapter 13, The Central and Peripheral Nervous System, does not use grades, grade modifiers, and a net adjustment formula; rather the chapter uses an approach that is similar to that in prior editions of the AMA Guides. The following steps can be used to perform a CNS rating: 1) evaluate all four major categories of cerebral impairment, and choose the one that is most severe; 2) rate the single most severe cerebral impairment of the four major categories; 3) rate all other impairments that are due to neurogenic problems; and 4) combine the rating of the single most severe category of cerebral impairment with the ratings of all other impairments. Because some neurological dysfunctions are rated elsewhere in the AMA Guides, Sixth Edition, the evaluator may consult Table 13-1 to verify the appropriate chapter to use.

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