Serum CGRP Changes following Ultrasound-Guided Bilateral Greater-Occipital-Nerve Block
Background: Calcitonin-gene-related peptide (CGRP) and CGRP receptors are expressed in trigeminal nerve cells, and treatments targeting CGRP are effective in migraines. For headaches that do not respond to pharmacological treatment, minimally invasive techniques such as greater-occipital-nerve block...
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MDPI AG
2022-02-01
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| Series: | Neurology International |
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| Online Access: | https://www.mdpi.com/2035-8377/14/1/16 |
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| author | Abdelrahman Abbas Ramez Moustafa Ali Shalash Mahmoud Haroun Randa Amin Sherien Borham Ahmed Elsadek Shahinaz Helmy |
| author_facet | Abdelrahman Abbas Ramez Moustafa Ali Shalash Mahmoud Haroun Randa Amin Sherien Borham Ahmed Elsadek Shahinaz Helmy |
| author_sort | Abdelrahman Abbas |
| collection | DOAJ |
| description | Background: Calcitonin-gene-related peptide (CGRP) and CGRP receptors are expressed in trigeminal nerve cells, and treatments targeting CGRP are effective in migraines. For headaches that do not respond to pharmacological treatment, minimally invasive techniques such as greater-occipital-nerve block (GONB) can help relieve the pain and reduce the frequency of headaches. Our study assessed the efficacy of ultrasound-guided greater-occipital-nerve block (USgGONB) in chronic migraines (CM) and its relationship to serum CGRP levels. Methods: Forty chronic migraineurs who underwent bilateral USgGONB using 40 mg triamcinolone and 1 mL lidocaine were recruited and interictal serum CGRP samples were collected immediately before and one month after GONB. The clinical response was evaluated using headache diaries before and one month after USgGONB. The patient response was determined after USgGONB according to the reduction in headache days as a good responder (>50% reduction), poor responder (<50%) or non-responder. Results: Monthly headache days after GONB showed a significant reduction (median, 10 days; range, 8–14.7) compared to before the block (median, 18 days; range, 17–22; <i>p</i> < 0.001). Across all patients, interictal serum CGRP levels after USgGONB were significantly lower than before the block (median, 40 pg/mL (range, 25–60) vs. 145 pg/mL (range, 60–380) (<i>p</i> = 0.001). The pre-treatment interictal CGRP levels showed a significant difference (<i>p</i> = 0.003), as their levels in non-responders (median, 310 pg/mL; interquartile range, 262–350) were significantly higher than those seen in responders, whether poor responders (median, 135 pg/mL; interquartile range, 100–200 pg/mL) or good responders (median, 140 pg/mL; interquartile range, 80–150 pg/mL). Conclusion: the study showed the beneficial effect of USgGONB in chronic migraines that was associated with lowering interictal CGRP levels, implying a potential role for CGRP in the mechanism of action of GONB in CM, and the interictal CGRP level may be used as a predictor for the response to GONB. |
| first_indexed | 2024-03-09T13:07:05Z |
| format | Article |
| id | doaj.art-d017925b5eb5496e8c30a9a6fc1918de |
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| language | English |
| last_indexed | 2024-03-09T13:07:05Z |
| publishDate | 2022-02-01 |
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| spelling | doaj.art-d017925b5eb5496e8c30a9a6fc1918de2023-11-30T21:47:39ZengMDPI AGNeurology International2035-83772022-02-0114119920610.3390/neurolint14010016Serum CGRP Changes following Ultrasound-Guided Bilateral Greater-Occipital-Nerve BlockAbdelrahman Abbas0Ramez Moustafa1Ali Shalash2Mahmoud Haroun3Randa Amin4Sherien Borham5Ahmed Elsadek6Shahinaz Helmy7Department of Neurology, Faculty of Medicine, Ain Shams University, 12th Abbassiya Street, Cairo 08080, EgyptDepartment of Neurology, Faculty of Medicine, Ain Shams University, 12th Abbassiya Street, Cairo 08080, EgyptDepartment of Neurology, Faculty of Medicine, Ain Shams University, 12th Abbassiya Street, Cairo 08080, EgyptDepartment of Neurology, Faculty of Medicine, Ain Shams University, 12th Abbassiya Street, Cairo 08080, EgyptDepartment of Neurology, Faculty of Medicine, Ain Shams University, 12th Abbassiya Street, Cairo 08080, EgyptDepartment of Neurology, Faculty of Medicine, Ain Shams University, 12th Abbassiya Street, Cairo 08080, EgyptDepartment of Neurology, Faculty of Medicine, Ain Shams University, 12th Abbassiya Street, Cairo 08080, EgyptDepartment of Neurology, Faculty of Medicine, Ain Shams University, 12th Abbassiya Street, Cairo 08080, EgyptBackground: Calcitonin-gene-related peptide (CGRP) and CGRP receptors are expressed in trigeminal nerve cells, and treatments targeting CGRP are effective in migraines. For headaches that do not respond to pharmacological treatment, minimally invasive techniques such as greater-occipital-nerve block (GONB) can help relieve the pain and reduce the frequency of headaches. Our study assessed the efficacy of ultrasound-guided greater-occipital-nerve block (USgGONB) in chronic migraines (CM) and its relationship to serum CGRP levels. Methods: Forty chronic migraineurs who underwent bilateral USgGONB using 40 mg triamcinolone and 1 mL lidocaine were recruited and interictal serum CGRP samples were collected immediately before and one month after GONB. The clinical response was evaluated using headache diaries before and one month after USgGONB. The patient response was determined after USgGONB according to the reduction in headache days as a good responder (>50% reduction), poor responder (<50%) or non-responder. Results: Monthly headache days after GONB showed a significant reduction (median, 10 days; range, 8–14.7) compared to before the block (median, 18 days; range, 17–22; <i>p</i> < 0.001). Across all patients, interictal serum CGRP levels after USgGONB were significantly lower than before the block (median, 40 pg/mL (range, 25–60) vs. 145 pg/mL (range, 60–380) (<i>p</i> = 0.001). The pre-treatment interictal CGRP levels showed a significant difference (<i>p</i> = 0.003), as their levels in non-responders (median, 310 pg/mL; interquartile range, 262–350) were significantly higher than those seen in responders, whether poor responders (median, 135 pg/mL; interquartile range, 100–200 pg/mL) or good responders (median, 140 pg/mL; interquartile range, 80–150 pg/mL). Conclusion: the study showed the beneficial effect of USgGONB in chronic migraines that was associated with lowering interictal CGRP levels, implying a potential role for CGRP in the mechanism of action of GONB in CM, and the interictal CGRP level may be used as a predictor for the response to GONB.https://www.mdpi.com/2035-8377/14/1/16CGRPGONBchronic migraine |
| spellingShingle | Abdelrahman Abbas Ramez Moustafa Ali Shalash Mahmoud Haroun Randa Amin Sherien Borham Ahmed Elsadek Shahinaz Helmy Serum CGRP Changes following Ultrasound-Guided Bilateral Greater-Occipital-Nerve Block Neurology International CGRP GONB chronic migraine |
| title | Serum CGRP Changes following Ultrasound-Guided Bilateral Greater-Occipital-Nerve Block |
| title_full | Serum CGRP Changes following Ultrasound-Guided Bilateral Greater-Occipital-Nerve Block |
| title_fullStr | Serum CGRP Changes following Ultrasound-Guided Bilateral Greater-Occipital-Nerve Block |
| title_full_unstemmed | Serum CGRP Changes following Ultrasound-Guided Bilateral Greater-Occipital-Nerve Block |
| title_short | Serum CGRP Changes following Ultrasound-Guided Bilateral Greater-Occipital-Nerve Block |
| title_sort | serum cgrp changes following ultrasound guided bilateral greater occipital nerve block |
| topic | CGRP GONB chronic migraine |
| url | https://www.mdpi.com/2035-8377/14/1/16 |
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