Clinical trial NCT04295980: Mechanism of Aphasia and Recovery of Language After the Injury of Geschwind's Territory: a Study Based on the Brain Network Analysis
Official title: Mechanism of Aphasia and Recovery of Language After the Injury of Geschwind's Territory: a Study Based on the Brain Network Analysis
Study type: OBSERVATIONAL
Overall status: UNKNOWN
Conditions: AVM - Cerebral Arteriovenous Malformation
Language
Lead sponsor: Beijing Tiantan Hospital
Sponsor class: OTHER
First posted: 2020-03-05
Enrollment: 80
Sex: ALL
Minimum age (years): 18
Maximum age (years): 40
Standard ages: ADULT
Accepts healthy volunteers: yes
Observational model: CASE_CONTROL
Time perspective: PROSPECTIVE
Sampling method: PROBABILITY_SAMPLE
Study population: In this study, we will recruit 40 patients with BAVMs located in Geschwind's area, and recruit 40 healthy subjects as healthy control.

Brief summary: At present, functional imaging studies have suggested that the Geschwind's territory (the inferior parietal lobe) is an important language area. It is the hub for semantics and phonetic language processing. However, the type and mechanism of aphasia after injury of Geschwind's territory and the subsequent recovery of language are still unclear. In our study based on brain injury model of brain arteriovenous malformation (BAVMs) resection, investigators found that the incidence of aphasia was higher after the injury of Geschwind's territory than after injury of the classical language area, and the type of aphasia was complicated, while the recovery rate of language disorder was high during follow-up. Investigators hypothesized that the type of aphasia may be associated with the type of brain connectivity damaged, and that reorganization of brain connections and brain network promote the recovery of language function. In this study, we aim to investigate the types of aphasia and their corresponding brain network changes after the resection of BAVMs located in the Geschwind's territory. Investigators will evaluate language function and collect multimodality images of the patients before resection of the lesions, as well as 7 days, 3 months and 6 months afterwards. In addition, the anatomical brain connectivity and brain network will also be analyzed. Our research will not only be a meaningful exploration for mechanisms of human language function damage and reorganization, but will also provide an important basis for the protection of brain function in neurosurgery.


Eligibility criteria: Inclusion Criteria:

1. Signed the informed consent form;
2. The dominant hand is the right hand (evaluated by the Edinburgh hand scale);
3. BAVM located in the left inferior parietal lobe
4. No history of rupture and bleeding and neurosurgical treatment

Exclusion Criteria:

1. There are implants in the body (cardiac pacemaker, artificial femoral head, etc.);
2. The dominant hand is unclear;
3. Illiterate or other patients who can not cooperate well with cognitive function tests;
4. The history of bleeding in BAVM patients within one month;
5. History of neurosurgical treatment.

Primary outcomes:
measure: Brain network of BAVMs in Geschwind's area
timeFrame: 2 years
measure: Brain network after injury of Geschwind's area
timeFrame: 2 years
measure: Brain network of the brain reorganization after surgery
timeFrame: 3 years
Secondary outcomes:
Other outcomes:
Locations:
city: Beijing
country: China
facility: Beijing Tiantan Hospital, Capital Medical University
state: Beijing
Study officials:
References: