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MRI Reveals Multiple Regions of the Brain Attacked by ALS

By MedImaging International staff writers
Posted on 06 Oct 2011
New research has demonstrated that amyotrophic lateral sclerosis (ALS)--known as Lou Gehrig’s disease--damages neurons in areas of the brain responsible for cognition and behavior.

ALS is a fatal neurodegenerative disease that ultimately leaves patients unable to move, breathe, or swallow. Earlier studies have shown approximately 50% of patients with ALS also have mild cognitive and behavioral changes, but between five and 15% of patients can have severe changes resulting in dementia. In Canada, between 2,500 and 3,000 people live with the disease. Most die within two to five years of diagnosis.

Dr. Sanjay Kalra, a researcher in the faculty of medicine & dentistry division of neurology at the University of Alberta (Edmonton, Canada) and a practicing neurologist, has published two articles, one published on Jul 21, 2011 and the other in February 2011 in the American Journal of Neuroradiology, providing evidence that ALS affects more than just the motor cortex, the part of the brain responsible for motor function.

“ALS was previously thought to be a disease restricted to the motor system causing only weakness,” said Dr. Kalra, the lead investigator in both articles. “But a significant proportion of people with ALS also have cognitive and behavioral changes. We wanted to know how ALS was impacting other parts of the brain to cause these symptoms. There is increasing evidence from pathological studies of ALS patient’s post-mortem that not just the motor system is involved. Our research supports this and demonstrates in those living with ALS, that the disease is indeed attacking other parts of the brain. The cognitive and behavioral changes we are seeing in patients are not reactive. They are not happening because someone is depressed or doesn’t have initiative because he is weak. Those changes are happening because there are biological and chemical changes in parts of the brain that are responsible for behavior and cognition.”

Dr. Kalra uses magnetic resonance imaging (MRI) scanning not to only look at images of the brain, but also as a way of measuring the levels of various chemicals in the brain. In his most recently published article, he looked at two different chemicals called N-acetylaspartate (NAA) and myo-inositol (mIns). NAA is known as a neural marker, which means it is only found in neurons, while levels of mIns increase when there is abnormal scarring in the brain.

“If NAA is decreased, it means neurons have died or they are not working. Many papers have shown NAA to be decreased in regions where you expect it to be decreased with ALS--the motor cortex. But our recent study shows that these levels are also decreasing in areas of the brain responsible for cognition and behavior” said Dr. Kalra. His paper published February 2011 looked at decreasing levels of NAA in the cingulate cortex--the first time MRI had been used to measure chemicals in this region of the brain in ALS. In addition, his most recently published paper, which came out late this summer, was the first to demonstrate that NAA was decreasing and mIns was increasing in the frontal lobe, even when there were no signs of cognitive or behavioral issues in patients. The frontal lobe is considered the hub for cognition and behavior in the brain.

Dr. Kalra would like to continue his research using MRI to monitor the changes in the brain of those who have ALS, and to examine new drugs. He is the leading researcher in Canada to use MRI scanning to study ALS. In November 2010, he was invited to give a presentation at Oxford University (UK). He first became interested in studying ALS when he was a neurology resident looking for a research project using MRI. He has continued studying the disease ever since.

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87 (41.961669921875): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294737445 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
88 (30.040740966797): SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294737445 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
89 (35.04753112793): SELECT id,name,title FROM jos_deeppockets WHERE cat=10 AND TYPE='file_folder' AND published=1 AND id != 294743300 AND id != 294743301 AND id != 294743302 AND id != 294743303 AND id != 294743304 AND id != 294743305 AND id != 294743306 AND id != 294743307 AND id != 294743308 AND id != 294743309 AND id != 294743310 AND metakey != 'aacc' ORDER BY `ordering`
90 (66.041946411133): SELECT show_live FROM jos_com_show_setting LIMIT 1
91 (38.862228393555): SELECT show_live FROM jos_com_show_setting LIMIT 1
92 (36.001205444336): SELECT show_live FROM jos_com_show_setting LIMIT 1
93 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1
94 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1
95 (36.001205444336): SELECT show_live FROM jos_com_show_setting LIMIT 1
96 (36.001205444336): SELECT show_live FROM jos_com_show_setting LIMIT 1
97 (36.001205444336): SELECT show_live FROM jos_com_show_setting LIMIT 1
98 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1
99 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1
100 (35.04753112793): SELECT show_live FROM jos_com_show_setting LIMIT 1
101 (37.193298339844): SELECT show_live FROM jos_com_show_setting LIMIT 1
102 (36.001205444336): SELECT show_live FROM jos_com_show_setting LIMIT 1
103 (36.001205444336): SELECT show_live FROM jos_com_show_setting LIMIT 1
104 (88.930130004883): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
105 (64.13459777832): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
106 (68.902969360352): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294737445 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
107 (94.890594482422): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294737445 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
108 (92.029571533203): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
109 (61.988830566406): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
110 (66.995620727539): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294737445 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
111 (746.01173400879): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.id=294737445 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
112 (544.07119750977): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
113 (392.91381835938): SELECT dp.name, dp.id, dp2.name as channel, ex.name as author_name, ex.specialization, ex.images FROM jos_deeppockets as dp LEFT JOIN jos_experts as ex ON ex.id = dp.author LEFT JOIN jos_deeppockets as dp2 ON dp2.id = dp.fid WHERE dp.author != 0 AND dp.cat = 10 AND dp.published = 1 AND ( (dp.fid = 294743300) OR (dp.fid = 294743301) OR (dp.fid = 294743302) OR (dp.fid = 294743303) OR (dp.fid = 294743304) OR (dp.fid = 294743305) OR (dp.fid = 294743306) OR (dp.fid = 294743307) OR (dp.fid = 294743308) OR (dp.fid = 294743309) OR (dp.fid = 294743310) ) ORDER BY RAND() LIMIT 1
114 (87.02278137207): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
115 (69.141387939453): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
116 (57.93571472168): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
117 (47.922134399414): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
118 (53.882598876953): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
119 (46.968460083008): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
120 (98.943710327148): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
121 (48.160552978516): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
122 (255.82313537598): SELECT * FROM trending_articles WHERE `journal_id` = 10 AND `timestamp` <= NOW() + INTERVAL 7 DAY ORDER BY `order`
123 (!!!!! 18527.030944824): SELECT * FROM jos_deeppockets WHERE jos_deeppockets.cat = 10 AND jos_deeppockets.type = 'deeppockets_item' AND jos_deeppockets.published = 1 AND jos_deeppockets.created + INTERVAL 14 DAY >= NOW() ORDER BY jos_deeppockets.hits DESC LIMIT 7
124 (474.92980957031): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294737445 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294737445 AND type='deeppockets_item' AND published='1' LIMIT 1
125 (!!!!! 7055.9978485107): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
126 (65.088272094727): ( SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.video != '' AND dp.video_source != '' AND dp.cat = 10 AND dp.published = 1 AND dp.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) UNION ( SELECT dpa.id, dpa.name, dpa.title, dpa.video, dpa.video_source, dpa.created FROM jos_deeppockets_archive AS dpa WHERE dpa.video != '' AND dpa.video_source != '' AND dpa.cat = 10 AND dpa.published = 1 AND dpa.type != 'deeppockets_item_link' ORDER BY created DESC LIMIT 3 ) ORDER BY created DESC LIMIT 3
127 (42.915344238281): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
128 (31.948089599609): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803337 LIMIT 1
129 (36.001205444336): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
130 (28.133392333984): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294803276 LIMIT 1
131 (262.02201843262): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
132 (33.855438232422): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets_archive AS dp WHERE dp.id = 294803276 LIMIT 1
133 (30.040740966797): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
134 (28.133392333984): SELECT dp.id, dp.name, dp.title, dp.video, dp.video_source, dp.created FROM jos_deeppockets AS dp WHERE dp.id = 294802958 LIMIT 1
135 (473.97613525391): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
136 (451.80320739746): SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
137 (258.9225769043): SELECT name FROM jos_deeppockets WHERE id=212
138 (32.901763916016): SELECT name FROM jos_deeppockets WHERE id=212
139 (565.0520324707): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
140 (443.93539428711): SELECT *, DATE_FORMAT(publish_up,'%d %b %Y') AS date_publish_up, DATE_FORMAT(publish_down,'%d %b %Y') AS date_publish_down FROM jos_events WHERE state=1 AND publish_up > NOW() and extra_info REGEXP '((;)|(^))212((;)|($))' AND catid IN (0,110) ORDER BY publish_up ASC LIMIT 3
141 (66.995620727539): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
142 (43.153762817383): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
143 (!!!!! 8391.1418914795): TRUNCATE TABLE jos_trademed_module
144 (86.069107055664): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294737445 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
145 (65.088272094727): SELECT dp.*, ch.title as channel, exp.name as author_name, exp.specialization as author_specialization, exp.images as author_photo FROM jos_deeppockets_archive as dp LEFT JOIN jos_experts as exp ON exp.id = dp.author LEFT JOIN jos_deeppockets as ch ON dp.fid = ch.id WHERE 1=1 AND dp.cat=10 AND dp.id=294737445 AND (dp.type='deeppockets_item' OR dp.type='deeppockets_item_link') AND dp.published='1' LIMIT 1
146 (936.03134155273): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
147 (60.796737670898): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND (type='deeppockets_item' OR type='deeppockets_item_link') AND published='1' LIMIT 1
148 (58.174133300781): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
149 (64.849853515625): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
150 (!!!!! 1290.0829315186): SELECT jos_item.* FROM jos_item INNER JOIN jos_number ON jos_item.numberID=jos_number.id WHERE 1=1 AND (jos_item.imgMini<>'') AND jos_item.type='L' AND jos_item.numberID= ( SELECT jos_number.id FROM jos_number WHERE jos_number.journalID IN (10) and jos_number.id in (select distinct jos_number.id from jos_number join jos_item on jos_item.numberid=jos_number.id where jos_item.type='P') ORDER BY (CONVERT(SUBSTRING(issue,1,2),SIGNED) + (CONVERT(SUBSTRING(issue,3,2),SIGNED)*100)) DESC LIMIT 0,1 ) ORDER BY RAND() DESC LIMIT 6
151 (89.883804321289): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
152 (64.849853515625): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
153 (39.100646972656): SELECT fid FROM jos_deeppockets WHERE cat=10 AND id=294737445 AND type='deeppockets_item' AND published='1' union SELECT fid FROM jos_deeppockets_archive WHERE cat=10 AND id=294737445 AND type='deeppockets_item' AND published='1' LIMIT 1
154 (29.087066650391): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=212 or channel_id is null)
155 (31.948089599609): select distinct links.* from jos_textlinks links join jos_textlinks_placement placement on links.id=placement.link_id where journal_id=(10) and (channel_id=212 or channel_id is null)
156 (52.928924560547): SELECT livesite FROM jos_dp_categories WHERE id=10 AND published='1' LIMIT 1
157 (68.187713623047): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
158 (49.829483032227): SELECT * FROM jos_deeppockets WHERE 1=1 AND id=294737445 AND published='1' union SELECT * FROM jos_deeppockets_archive WHERE 1=1 AND id=294737445 AND published='1' LIMIT 1
159 (35.04753112793): select jos_twitters.link from jos_twitters where cat=10
160 (30.994415283203): select jos_facebook.link from jos_facebook where cat=10
161 (30.994415283203): select jos_google_plus.link from jos_google_plus where cat=10
162 (30.040740966797): select jos_linkedin.link from jos_linkedin where cat=10
163 (311.85150146484): update jos_bannersmanager_banner set impmade=impmade+1 where id in(14615,14202,14203)
164 (!!!!! 1121.997833252): insert into jos_banners_delta values (14615,'2025-06-26 23:55:16','216.73.216.249','view'),(14202,'2025-06-26 23:55:16','216.73.216.249','view'),(14203,'2025-06-26 23:55:16','216.73.216.249','view')