5 results on '"Zhao, Dengfa"'
Search Results
2. The crucial role of locus coeruleus noradrenergic neurons in the interaction between acute sleep disturbance and headache.
- Author
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Li, Bozhi, Cao, Ya, Yuan, Huijuan, Yu, Zhe, Miao, Shuai, Yang, Chunxiao, Gong, Zihua, Xie, Wei, Li, Chenhao, Bai, Wenhao, Tang, Wenjing, Zhao, Dengfa, and Yu, Shengyuan
- Subjects
CHRONIC pain ,SLEEP latency ,HEADACHE ,NEURONS ,ELECTROENCEPHALOGRAPHY ,IMMUNOHISTOCHEMISTRY ,EXPERIMENTAL design ,RATS ,NORADRENALINE ,ANIMAL experimentation ,SLEEP deprivation ,SLEEP quality ,SLEEP disorders ,MIGRAINE - Abstract
Background: Both epidemiological and clinical studies have indicated that headache and sleep disturbances share a complex relationship. Although headache and sleep share common neurophysiological and anatomical foundations, the mechanism underlying their interaction remains poorly understood. The structures of the diencephalon and brainstem, particularly the locus coeruleus (LC), are the primary sites where the sleep and headache pathways intersect. To better understand the intricate nature of the relationship between headache and sleep, our study focused on investigating the role and function of noradrenergic neurons in the LC during acute headache and acute sleep disturbance. Method: To explore the relationship between acute headache and acute sleep disturbance, we primarily employed nitroglycerin (NTG)-induced migraine-like headache and acute sleep deprivation (ASD) models. Initially, we conducted experiments to confirm that ASD enhances headache and that acute headache can lead to acute sleep disturbance. Subsequently, we examined the separate roles of the LC in sleep and headache. We observed the effects of drug-induced activation and inhibition and chemogenetic manipulation of LC noradrenergic neurons on ASD-induced headache facilitation and acute headache-related sleep disturbance. This approach enabled us to demonstrate the bidirectional function of LC noradrenergic neurons. Results: Our findings indicate that ASD facilitated the development of NTG-induced migraine-like headache, while acute headache affected sleep quality. Furthermore, activating the LC reduced the headache threshold and increased sleep latency, whereas inhibiting the LC had the opposite effect. Additional investigations demonstrated that activating LC noradrenergic neurons further intensified pain facilitation from ASD, while inhibiting these neurons reduced this pain facilitation. Moreover, activating LC noradrenergic neurons exacerbated the impact of acute headache on sleep quality, while inhibiting them alleviated this influence. Conclusion: The LC serves as a significant anatomical and functional region in the interaction between acute sleep disturbance and acute headache. The involvement of LC noradrenergic neurons is pivotal in facilitating headache triggered by ASD and influencing the effects of headache on sleep quality. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF
3. Prevalence and risk factors associated with headache amongst medical staff in South China
- Author
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Xie, Wei, Li, Ruibing, He, Mianwang, Cui, Fang, Sun, Tingting, Xiong, Jianmei, Zhao, Dengfa, Na, Weinan, Liu, Ruozhuo, and Yu, Shengyuan
- Published
- 2020
- Full Text
- View/download PDF
4. Prevalence and risk factors associated with headache amongst medical staff in South China
- Author
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Tingting Sun, Fang Cui, Zhao Dengfa, Wei Xie, Ruozhuo Liu, Jianmei Xiong, Ruibing Li, Mianwang He, Weinan Na, and Shengyuan Yu
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Adult ,Male ,Mainland China ,China ,medicine.medical_specialty ,Headache Disorders, Primary ,Multivariate analysis ,Neurology ,Migraine Disorders ,Population ,lcsh:Medicine ,Medical staff ,Occupational safety and health ,03 medical and health sciences ,0302 clinical medicine ,Risk Factors ,Surveys and Questionnaires ,medicine ,Prevalence ,Humans ,030212 general & internal medicine ,Sex Distribution ,Risk factor ,education ,Migraine ,education.field_of_study ,business.industry ,lcsh:R ,Headache ,Shift Work Schedule ,General Medicine ,Emergency department ,Middle Aged ,medicine.disease ,Tension-type headache ,Cross-Sectional Studies ,Anesthesiology and Pain Medicine ,Family medicine ,Female ,Neurology (clinical) ,business ,030217 neurology & neurosurgery ,Research Article - Abstract
Background A previous study by our team reported the prevalence of primary headache disorders and factors associated with headache among nurses in three hospitals in North China. The aim of this cross-sectional survey was to learn more about how medical nurses in South China were affected by headache. Additionally, we determined the prevalence of headache and measured the impact of headache among doctors in mainland China for the first time. Methods Stratified random cluster sampling was used to select 280 physicians and 365 nurses from various departments in four hospitals in Sanya, which is one of southernmost cities in China. Information was collected on demographic data, occupational factors and headache characteristics by using a structured questionnaire. Results Among 645 medical staff, 548 (85%) responded (doctors = 240, nurses = 308). Among the medical staff, the 1-year prevalence of primary headache disorders was 50%, with 25.9% experiencing migraine and 24.1% experiencing tension-type headache (TTH). The prevalence of migraine in female doctors was higher than that in female nurses, although this difference was not significant (32.4% vs. 29.8%, P = 0.628). Multivariate analysis showed that being female and working in other specialties (Emergency Department & Radiology Department) remained independent risk factors for migraine in doctors (OR 2.314 and 3.223). In nurses, being married was a risk factor for migraine (OR 3.728), and job titles remained an independent risk factor for migraine and TTH (OR 2.294 and 4.695). Working more than 6 night-shifts per month was associated with an increased prevalence of migraine and TTH in doctors; the same was true in nurses for migraine, but not for TTH. Conclusion The prevalence of primary headache disorders in both nurses and doctors is higher than that in the general population in South China. Our study shows that occupation, geography and sex may play an important role. Further, female doctors are more susceptible than female nurses to migraine. The risk factors relevant to headache that were found in this study should provide an important reference for promoting occupational health in medical staff, especially female doctors in China.
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- 2020
5. Altered functional connectivity of the insula in a rat model of recurrent headache.
- Author
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Jia, Zhihua, Yu, Shengyuan, Tang, Wenjing, and Zhao, Dengfa
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FUNCTIONAL connectivity ,INSULAR cortex ,CINGULATE cortex ,MAGNETIC resonance imaging ,HEADACHE ,MIGRAINE aura ,PROGRESSIVE supranuclear palsy - Abstract
Migraine is a pain disorder accompanied by various symptoms. The insula, a "cortical hub," is involved in many functions. Few studies have focused on the insula in migraine. We explored the resting-state functional connectivity between the insula and other brain areas in rats subjected to repeated meningeal nociception which was commonly used as animal model of migraine. Inflammatory soup was infused through supradural catheters in conscious rats. The rats were subdivided based on the frequency of the inflammatory soup infusions. Magnetic resonance imaging data were acquired on rats 21 days after inflammatory soup infusion and functional connectivity seeded on the insula was analyzed. In the low-frequency inflammatory soup group, magnetic resonance imaging was performed again 1 h after the glyceryl trinitrate injection following baseline scanning. The cerebellum showed increased functional connectivity with the insula in the inflammatory soup groups. The insula showed increased functional connectivity with the medulla and thalamus in the ictal period in the low-frequency inflammatory soup rats. In the high-frequency inflammatory soup group, several areas showed increased functional connectivity with the insula, including the pons, midbrain, thalamus, temporal association cortex, and retrosplenial, visual, and sensory cortices. Our findings support the hypothesis that the headache phase of migraine depends on the activation and sensitization of the trigeminovascular system, and that the chronification of migraine may be related to higher brain centers and limbic cortices. The insula may be a new target for treatment of migraine. [ABSTRACT FROM AUTHOR]
- Published
- 2020
- Full Text
- View/download PDF
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