{"id":1181,"date":"2016-11-24T09:12:09","date_gmt":"2016-11-24T08:12:09","guid":{"rendered":"http:\/\/www.scivit.de\/lang\/?p=1181"},"modified":"2017-01-04T14:34:35","modified_gmt":"2017-01-04T13:34:35","slug":"defects-in-genes-differing-between-humans-and-anthropoids-result-in-cognitive-or-behavioural-disorders","status":"publish","type":"post","link":"https:\/\/www.scivit.de\/lang\/archive\/1181","title":{"rendered":"Defects in genes differing between humans and anthropoids result in cognitive or behavioural disorders"},"content":{"rendered":"

[et_pb_section admin_label=“Sektion“ fullwidth=“on“ specialty=“off“][et_pb_fullwidth_image admin_label=“Volle Breite des Bildes“ src=“https:\/\/www.scivit.de\/lang\/wp-content\/uploads\/2016\/11\/Teaserb-1.jpg“ alt=“Defects in genes differing between humans and anthropoids result in cognitive or behavioural disorders“ title_text=“Defects in genes differing between humans and anthropoids result in cognitive or behavioural disorders“ show_in_lightbox=“off“ url_new_window=“off“ use_overlay=“off“ animation=“left“ use_border_color=“on“ border_color=“#0c71c3″ border_style=“solid“ border_width=“2px“] [\/et_pb_fullwidth_image][\/et_pb_section][et_pb_section admin_label=“section“][et_pb_row admin_label=“Zeile“][et_pb_column type=“4_4″][et_pb_post_title admin_label=“Posttitel“ title=“on“ meta=“on“ author=“on“ date=“on“ categories=“on“ comments=“on“ featured_image=“off“ featured_placement=“below“ parallax_effect=“on“ parallax_method=“on“ text_orientation=“left“ text_color=“dark“ text_background=“off“ text_bg_color=“rgba(255,255,255,0.9)“ module_bg_color=“rgba(255,255,255,0)“ title_all_caps=“off“ use_border_color=“off“ border_color=“#ffffff“ border_style=“solid“] [\/et_pb_post_title][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=“Zeile“][et_pb_column type=“4_4″][et_pb_text admin_label=“Text“ background_layout=“light“ text_orientation=“left“ use_border_color=“off“ border_color=“#ffffff“ border_style=“solid“ text_font_size=“18″]<\/p>\n

Genes involved in autism spectrum disorders<\/h3>\n

Are DNA-sequences which differ between humans and their next relatives involved in cognition or social behaviour? Two recent publications, approaching this topic by differing methodologies have answered this question with „yes“. Both scientific groups looked at DNA-sequences differing when comparing people with autism spectrum disorders (ASD) and a control group. And both groups observed that this group of sequences partially overlapped with sequences somehow unique to humans. The difference between the two groups refers to defining this „uniqueness“.<\/p>\n

 <\/p>\n

Identifying genes using „human accelerated regions“<\/h3>\n

Doan and colleagues looked at DNA-regions particularly differing in their sequence when comparing humans and their next relatives. These regions have been called „human accelerated regions“. They are strongly conserved outside Homo sapiens, but shifted in sequence information during the evolution of our species. Mutations in such regions are elevated in individuals with ASD and are connected to an increased risk for developing respective symptoms. A close genetic analysis demonstrated that HARs connected to ASD work as enhancers for genes with known neural function.<\/p>\n

 <\/p>\n

Identifying genes by looking at differences in transcription patterns in the prefrontal cortex<\/h3>\n

Liu and colleagues, on the other hand, looked at genes with human-specific expression patterns during the development of the prefrontal cortex. Samples for this analysis were taken from deceased humans (with or without ASD), chimpanzees and rhesus monkeys. They identified one group of genes connected to ASD which was differing in expression patterns between apes and humans. This set of genes also seems to be connected to synaptic functions.<\/p>\n

Source: Doan et al., Cell 167, 341 \u2013 354<\/a>\/\/Liu et al., PLOS Biology | DOI:10.1371\/journal.pbio.1002558<\/a><\/p>\n

[\/et_pb_text][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=“Zeile“][et_pb_column type=“4_4″][et_pb_image admin_label=“Bild“ src=“https:\/\/www.scivit.de\/lang\/wp-content\/uploads\/2016\/11\/Gesamt-4.jpg“ alt=“DNA-regions particularly differing between humans and their closest relatives are connected to an increased risk for autism. Many of the regions identified were active as enhancers for genes involved in neural functions. Also a group of genes with synaptic-related functions and human-specific expression pattern in the pre-frontal cortex was connected to autism. “ title_text=“DNA-regions particularly differing between humans and their closest relatives are connected to an increased risk for autism. Many of the regions identified were active as enhancers for genes involved in neural functions. Also a group of genes with synaptic-related functions and human-specific expression pattern in the pre-frontal cortex was connected to autism. “ show_in_lightbox=“off“ url_new_window=“off“ use_overlay=“off“ animation=“left“ sticky=“off“ align=“left“ force_fullwidth=“off“ always_center_on_mobile=“on“ use_border_color=“off“ border_color=“#ffffff“ border_style=“solid“] [\/et_pb_image][\/et_pb_column][\/et_pb_row][et_pb_row admin_label=“Zeile“][et_pb_column type=“4_4″][et_pb_text admin_label=“Links“ background_layout=“light“ text_orientation=“left“ use_border_color=“off“ border_color=“#ffffff“ border_style=“solid“ text_font_size=“18″]<\/p>\n

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