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Knowledge, attitudes and binge drinking among urban Chinese university students in Hong Kong. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Although dormitory residents have been identified as a high-risk group for alcohol misuse in Chinese university settings, the factors associated with their drinking behaviors has not be characterized.
Methods
A cross-sectional study was conducted among hostel residents in two Hong Kong universities (n = 1455) using self-administered, anonymous surveys. In addition to examining the knowledge levels and drinking-related attitudes, we examined the factors associated with binge drinking in this population using multivariable regression analysis.
Results
Among university dormitory residents, the prevalence of past-month binge drinking was 26.8% among males and 12.8% among females. It was noted that although respondents demonstrated attitudes conducive towards alcohol-free socialization, they exhibited low levels of alcohol-related knowledge (mean knowledge score: 3.3/ 10, SD = 2.0). While about 59% were aware that alcohol is a carcinogen and that some medications should not be taken with alcohol, only 10.4% were familiar with symptoms of alcohol poisoning and only 23% were familiar with relative amounts of alcohol in different beverage categories. Of the respondents the factors independently associated with past-month binge drinking were: male sex, older age, full-time hostel residence, drinking roommates, drinking romantic partner, participation in drinking games, and having pro-alcohol attitudes (OR ranging from 1.33-3.69). Alcohol-related knowledge was not associated with binge drinking.
Conclusions
Although southern China is a low alcohol consumption area, binge drinking is common among university residents and requires multi-prong interventions. Heavy drinking is a neglected health problem among urban Chinese university students. Interventions targeting binge drinkers need to counteract pro-alcohol attitudes and peer effects. Increasing alcohol knowledge may additionally help to reduce alcohol-related harms in this age group.
Key messages
Urban Chinese university dormitory residents demonstrate low levels of alcohol knowledge. Pro-alcohol attitudes and peers effects need to be addressed in university anti-binge drinking interventions.
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Second-hand harms of alcohol use in urban Chinese university students: A study from Hong Kong. Eur J Public Health 2020. [DOI: 10.1093/eurpub/ckaa166.383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
Background
Although second-harms alcohol harms, harms caused by the drinking of others, may contribute significantly to the public health burden of alcohol, these harms are an understudied area of public health research. This study aims to examine second-hand alcohol harms in among urban Chinese university students residing on campus who are were previously identified as a high risk group for alcohol misuse.
Methods
A cross-sectional study was conducted among hostel residents in two Hong Kong universities (n = 1455) using self-administered, anonymous surveys. We examined the prevalance and the factors associated with second-hand alcohol harms this population using multivariable regression analysis.
Results
Approximately 2/3 of the university residents experienced at least one second-hand drinking harm in the past year while 1/5 experienced 4 or more harms. The harms reported were: 1) inconveniences/disturbances (46.2%), psychological distress/anxiety/depression (32.9%), home arguments (28.3%), conflicts/arguments/insults in public (25.3%), worsened productivity/academics (22.2%), property damage/monetary loss (13.2%), accidents/injury/assault (11.7%) and having to deal with authorities/law enforcement (11.5%). Only 9.1% reported these harms to authorities. Participation in drinking games (OR = 1.44), having drinking roomates (OR = 1.37) or drinking romantic partner (OR = 1.89) were independently associated with likelihood of second-hand alcohol harms (p < 0.05).
Conclusions
Although southern China is a low alcohol consumption region, there is a high prevalence of second-hand alcohol harms among university dorm residents. Universities in the region should rectify the near absence of alcohol-related topics in university health promotion.
Key messages
Harms from the drinking of others is a commonplace but underappreciated phenomenon among university campus residents. University health promotion in the region should include alcohol harms reduction topics.
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Abuse and depression among Filipino foreign domestic helpers. A cross-sectional survey in Hong Kong. Public Health 2018; 166:121-127. [PMID: 30476780 DOI: 10.1016/j.puhe.2018.09.020] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2018] [Revised: 09/16/2018] [Accepted: 09/25/2018] [Indexed: 11/16/2022]
Abstract
OBJECTIVES The objectives of this study are to (1) explore physical and verbal abuse experience, perpetrators of abuse and abuse reporting behaviours of Filipino foreign domestic helpers in Hong Kong and (2) examine associations between their abuse experience and depression level. STUDY DESIGN A cross-sectional survey METHODS: We purposively sampled participants at the Statue Square of Hong Kong on three Sunday afternoons between June and August 2017. Using a self-administered questionnaire, measures include sociodemographic and housing environment variables, physical and verbal abuse experience and depression level measured using the Depression Subscale of Depression Anxiety Stress Scale 21 (DASS-21-D). Multiple linear regression was performed to identify factors associated with the DASS-21-D score. RESULTS The response rate was 86.1% and 105 participants completed the questionnaire. Overall, 20.5% and 34.4% had experienced physical and verbal abuse, respectively, in the past 12 months. Majority of perpetrators were female employers and children. Meanwhile, 16.7% of the abuse victims did not report their cases. Among those who reported, only a few (19.4%) reported their cases to formal organizations (agency and police). Factors significantly associated with the DASS-21-D score include physical abuse (unstandardized beta coefficient [B] = 1.68, 95% confidence interval [95% CI] = 0.12-3.34), verbal abuse (B = 1.58, 95% CI = 0.16-3.00), non-disclosure of physical abuse experience (B = 5.68, 95% CI = 0.18-11.18) and living space satisfaction (B = -1.50, 95% CI = -2.12 to -0.88). CONCLUSIONS Physical and verbal abuse among foreign domestic workers in Hong Kong were underreported to formal organizations and were associated with depression. Legislative enforcement of a comprehensive abuse reporting mechanism and mental health service should be considered.
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Adoption of the reference framework for diabetes care by primary care physicians. Hong Kong Med J 2018; 24 Suppl 2:21-23. [PMID: 29938653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/08/2023] Open
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Abstract
OBJECTIVE In a patient older than 70 years, the decision to treat an intracranial aneurysm remains difficult whether it is ruptured or unruptured. We sought to review our institutional risks of treatment of such lesions in the context of the risks of rupture and its associated morbidity and mortality in this age group. METHODS One hundred twenty-nine consecutive patients aged 70 years or older, who were treated at a single institution for an intracranial aneurysm, were retrospectively reviewed. Forty patients were treated for unruptured aneurysms, and 89 patients presented after subarachnoid hemorrhage. Seven additional patients in this age group who had solely intracavernous lesions, as well as one patient with a dolichoectatic fusiform basilar lesion, were excluded. Management outcomes were assessed using a modification of the Glasgow Outcome Scale, and additional physical and functional disability was assessed using the Barthel index and the Reintegration to Normal Living index. RESULTS Six-month outcomes for the unruptured group were: excellent, 70%; good, 15%; fair, 5%; poor, 7.5%; and death (2.5%). Outcomes for all patients with ruptured lesions (including those not offered aggressive therapy) were: excellent, 34%; good, 9%; fair, 5.6%; poor, 3.4%; and death, 45%. Long-term follow-up was performed by questionnaire to assess physical and functional disability. Although physical disability (Barthel index) was similar among survivors, the Reintegration to Normal Living index, a global assessment of function, was significantly higher in patients with unruptured aneurysms (84.8 versus 70.1; P = 0.05), which highlights the disabling effects of hemorrhage. CONCLUSION On the basis of an individual treatment center's management risks, annual aneurysmal rupture rates can be estimated that justify treatment in this difficult patient population. Despite recent controversy regarding aneurysmal hemorrhage rates, we think that symptomatic unruptured aneurysms should be treated and good results can be achieved, even in older patients.
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B-myb promoter retargeting of herpes simplex virus gamma34.5 gene-mediated virulence toward tumor and cycling cells. J Virol 1999; 73:7556-64. [PMID: 10438845 PMCID: PMC104282 DOI: 10.1128/jvi.73.9.7556-7564.1999] [Citation(s) in RCA: 93] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
Deletion of the gamma34.5 gene coding for virulence markedly reduces cytotoxicity mediated by herpes simplex virus type 1 (HSV-1) (J. M. Markert et al., Neurosurgery 32:597-603, 1993; N. S. Markovitz et al. , J. Virol. 71:5560-5569, 1997). To target lytic virulence to tumors, we have created a novel HSV-1 mutant, designated Myb34.5. This viral mutant is characterized by a deletion of the gene for infected cell polypeptide 6 (ICP6; also known as UL39 or ribonucleotide reductase) and of the two endogenous copies of the gamma34.5 gene (RL1) and by reintroduction of one copy of gamma34.5 under control of the E2F-responsive, cellular B-myb promoter. On direct intracerebral inoculation in BALB/c mice, the 50% lethal dose (LD(50)) for Myb34.5 was 2.7 x 10(7) PFU while that for HSVs with mutations in the gamma34.5 gene could not be technically achieved with available viral stocks and it was estimated as >1 x 10(7) PFU. The LD(50) for an HSV with a single defect in ICP6 function was 1.3 x 10(6) PFU. Conversely, Myb34.5's oncolytic efficacy against a variety of human glioma cells in culture and in vivo was enhanced compared to that of HSVs with gamma34.5 mutations, and in fact, it was comparable to that of the wild-type F strain and of viral mutants that possess a wild-type gamma34.5 gene. The characteristic shutoff of host protein synthesis, occurring after infection of human SK-N-SH neuroblastoma cells by gamma34.5 mutant viruses (J. Chou and B. Roizman, Proc. Natl. Acad. Sci. USA 89:3266-3270, 1992), was not present after infection with Myb34.5. There was an increase of almost 3 logarithmic units in the production of progeny virus in arrested fibroblasts compared to that in cycling fibroblasts infected with Myb34.5. These results suggest that transcriptional regulation of gamma34.5 by cell cycle-regulated promoters can be used to target HSV-1 virulence toward tumors while maintaining the desirable neuroattenuated phenotype of a gamma34.5 mutant.
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Gene therapy for tumors of the central nervous system. Surg Oncol Clin N Am 1998; 7:589-602. [PMID: 9624219] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Primary central nervous system tumors, consisting mainly of malignant gliomas, represent a unique system for the study of gene transfer techniques. Exogenous transgenes have been delivered using retroviral, adenoviral, and herpes simplex virus vectors. A number of strategies have been developed, including: (1) delivery of prodrug activating genes, (2) replacement of tumor suppressor genes, (3) cytokine-mediated enhancement of antitumor immune responses, and (4) antisense cDNA delivery to block the action of growth factors, cell cycle proteins, and drug resistance mechanisms. Efforts to disrupt the blood brain barrier may facilitate tumor gene delivery.
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An oncolytic viral mutant that delivers the CYP2B1 transgene and augments cyclophosphamide chemotherapy. Nat Biotechnol 1998; 16:444-8. [PMID: 9592392 DOI: 10.1038/nbt0598-444] [Citation(s) in RCA: 132] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Herpes simplex viruses type 1 (HSV-1) with an inactivated viral ribonucleotide reductase (Hsrr, ICP6) were designed to target tumor cells with upregulated mammalian ribonucleotide reductase (mRR), an enzyme whose expression is regulated by the p16/pRB tumor suppressor pathway. A recombinant HSV-1 was generated by knock-out of Hsrr and insertion of the rat CYP2B1 transgene responsible for the bioactivation of the prodrugs, cyclophosphamide and ifosfamide. The mutant virus replicated selectively in rat and human tumor cells that express mRR. Addition of cyclophosphamide potentiated oncolytic effects against cultured tumor cells and subcutaneous tumor xenografts established in athymic mice.
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Abstract
The p53 gene is a tumor suppressor gene involved in many common malignancies, including astrocytomas. Genetic analysis of the p53 gene and immunohistochemistry of the p53 protein have each been used to screen astrocytomas. To compare these methods, we performed immunohistochemistry with the monoclonal antibody PAb 1801 and single-strand conformational polymorphism (SSCP) with sequence analysis on 34 astrocytic tumors (WHO grades II, III and IV). Seven cases had detectable p53 protein and gene mutations, while twelve cases had neither detectable protein nor gene mutations. Four tumors had frameshift mutations in the p53 gene that were not revealed by immunohistochemistry. One tumor had a genetic polymorphism and no detectable p53 protein. Ten tumors had p53 protein accumulation but no mutations by SSCP; these cases may represent p53 mutations outside of the conserved exons or elevated levels of wild-type p53 protein. Thus, some p53 mutations are missed with PAb 1801 immunohistochemistry alone. p53 immunohistochemistry, however, may reveal p53 accumulation independent of mutations in the conserved portions of the gene. Finally, we suggest that glioblastomas with p53 mutations in the conserved region of the gene may be a subset that are more common in women and in younger patients.
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Abstract
Mutations in the p53 gene are the most common genetic alterations observed in many inherited and sporadic forms of human cancer. Recent studies indicate that wild-type p53 may be involved in the regulation of gene expression. In the present report we examined the effect of p53 on the human c-fos promoter. Using a transient co-transfection assay we show that wild-type human p53, but not a transforming mutant of p53, negatively regulates the activity of the c-fos promoter in a dose-dependent manner. Promoter deletion analysis maps a sequence conferring p53 repression to the basal promoter region between nucleotides -53 and +42 relative to the cap site. In contrast, p53 strongly stimulates transcription when a sequence previously reported to bind p53 (TGCCT repeat) was inserted in front of the HSV-TK promoter driving CAT. These findings raise the question as to whether p53 may mediate its inhibitory effect on c-fos gene expression by interfering, directly or indirectly, with components of the basal transcriptional machinery.
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Association of epidermal growth factor receptor gene amplification with loss of chromosome 10 in human glioblastoma multiforme. J Neurosurg 1992; 77:295-301. [PMID: 1320666 DOI: 10.3171/jns.1992.77.2.0295] [Citation(s) in RCA: 157] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Although the loss of tumor suppressor genes and the activation of oncogenes have been established as two of the fundamental mechanisms of tumorigenesis in human cancer, little is known about the possible interactions between these two mechanisms. Loss of genetic material on chromosome 10 and amplification of the epidermal growth factor receptor (EGFR) gene are the most frequently reported genetic abnormalities in glioblastoma multiforme. In order to examine a possible correlation between these two genetic aberrations, the authors studied 106 gliomas (58 glioblastomas, 14 anaplastic astrocytomas, five astrocytomas, nine pilocytic astrocytomas, seven mixed gliomas, six oligodendrogliomas, two ependymomas, one subependymoma, one subependymal giant-cell astrocytoma, and three gangliogliomas) with Southern blot analysis for loss of heterozygosity on both arms of chromosome 10 and for amplification of the EGFR gene. Both the loss of genetic material on chromosome 10 and EGFR gene amplification were restricted to the glioblastomas. Of the 58 glioblastoma patients, 72% showed loss of chromosome 10 and 38% showed EGFR gene amplification. The remaining 28% had neither loss of chromosome 10 nor EGFR gene amplification. Without exception, the glioblastomas that exhibited EGFR gene amplification had also lost genetic material on chromosome 10 (p less than 0.001). This invariable association suggests a relationship between the two genetic events. Moreover, the presence of 15 cases of glioblastoma with loss of chromosome 10 but without EGFR gene amplification may further imply that the loss of a tumor suppressor gene (or genes) on chromosome 10 precedes EGFR gene amplification in glioblastoma tumorigenesis.
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p53 mutations are associated with 17p allelic loss in grade II and grade III astrocytoma. Cancer Res 1992; 52:2987-90. [PMID: 1349850] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
Abstract
Loss of genetic material on the short arm of chromosome 17 is observed in approximately 40% of human astrocytomas (WHO grades II and III) and in approximately 30% of cases of glioblastoma multiforme (WHO grade IV). Previous studies of glioblastoma multiforme have shown that the p53 gene, located on the short arm of chromosome 17, is frequently mutated in these glioblastomas. To explore whether lower-grade astrocytomas are also associated with corresponding mutations of the p53 gene, we have investigated a series of 22 human astrocytomas of WHO grades II and III both for loss of heterozygosity on chromosome 17p and for p53 mutations. Mutations in the conserved regions of the p53 gene were identified by single strand conformation polymorphism analysis of exons 5, 6, 7, and 8 and were verified by direct DNA sequencing of the polymerase chain reaction products. p53 mutations were observed in 3 of 8 grade II astrocytomas and 4 of 14 grade II astrocytomas. In all 22 tumors, allelic loss of the short arm of chromosome 17 was investigated by restriction fragment length polymorphism analysis. One-half of the grade II astrocytomas (4 of 8) and grade III astrocytomas (7 of 14) exhibited allelic loss on chromosome 17p. Mutations in the p53 gene were exclusively observed in tumors with allelic loss on 17p. Our results show that p53 mutations are not restricted to glioblastoma multiforme and may be important in the tumorigenesis of lower-grade astrocytomas and that p53 mutations in lower-grade astrocytomas are associated with loss of chromosome 17p. These findings are consistent with a recessive mechanism of action of p53 in WHO grade II and III astrocytoma tumorigenesis.
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Chromosome 17p deletions and p53 gene mutations associated with the formation of malignant neurofibrosarcomas in von Recklinghausen neurofibromatosis. Proc Natl Acad Sci U S A 1990; 87:5435-9. [PMID: 2142531 PMCID: PMC54339 DOI: 10.1073/pnas.87.14.5435] [Citation(s) in RCA: 298] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
von Recklinghausen neurofibromatosis (NF1) is a common hereditary disorder characterized by neural crest-derived tumors, particularly benign neurofibromas whose malignant transformation to neurofibrosarcomas can be fatal. The NF1 gene has been mapped to a small region of chromosome 17q, but neither the nature of the primary defect nor the mechanisms involved in tumor progression are understood. We have tested whether NF1 might be caused by the inactivation of a tumor suppressor gene on 17q, analogous to that on chromosome 22 in NF2, by searching for deletions of chromosome 17 in NF1-derived tumor specimens. Both neurofibrosarcomas from patients with "atypical" NF and 5 of 6 neurofibrosarcomas from NF1 patients displayed loss of alleles for polymorphic DNA markers on chromosome 17. However, the common region of deletion was on 17p and did not include the NF1 region of 17q. Since no loss of markers on chromosome 17 was observed in any of 30 benign tumors from NF1 patients, the 17p deletions seen in neurofibrosarcomas are probably associated with tumor progression and/or malignancy. This region contains a candidate gene for tumor progression, p53, which has recently been implicated in the progression of a broad array of human cancers. In a preliminary search for p53 aberrations by direct sequencing of polymerase chain reaction-amplified DNA from 7 neurofibrosarcomas, 2 tumors that contained point mutations in exon 4 of the p53 gene were found, suggesting a role for this gene in at least some neurofibrosarcomas. Thus the formation of malignant neurofibrosarcomas may result from several independent genetic events including mutation of the NF1 gene, whose mechanism of tumorigenesis remains uncertain, and subsequent loss of a "tumor suppressor" gene on 17p, most likely p53.
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Loss of distinct regions on the short arm of chromosome 17 associated with tumorigenesis of human astrocytomas. Proc Natl Acad Sci U S A 1989; 86:7186-90. [PMID: 2571151 PMCID: PMC298021 DOI: 10.1073/pnas.86.18.7186] [Citation(s) in RCA: 112] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Astrocytomas, including glioblastoma multiforme, represent the most frequent and deadly primary neoplasms of the human nervous system. Despite a number of previous cytogenetic and oncogene studies primarily focusing on malignant astrocytomas, the primary mechanism of tumor initiation has remained obscure. The loss or inactivation of "tumor suppressor" genes are thought to play a fundamental role in the development of many human cancers. Thus, we have analyzed astrocytomas of various histological malignancy grades with polymorphic DNA markers to search for specific chromosomal deletions potentially pointing to loci containing tumor suppressor genes. Loss of constitutional heterozygosity indicating chromosomal loss or deletions was most frequently seen for markers on the short arm of chromosome 17 in 50% of the informative tumors (5 of 10 informative cases) and, to a lesser extent, for markers on chromosomes 1 and 10. Deletions on chromosome 17p were seen in both low-grade and high-grade malignant astrocytomas, suggesting that this chromosome may contain a tumor suppressor gene associated with the early events in tumorigenesis. The common region of deletions on the short arm of chromosome 17 is, therefore, clearly distinct from the gene causing von Recklinghausen neurofibromatosis (NF1), a tumor syndrome associated with glial tumors that maps to the long arm of chromosome 17. The search for progressively smaller deletions on chromosome 17p in astrocytomas may be the way to clone and characterize this locus, thus leading to insights into normal and abnormal growth and differentiation of glial cells.
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Abstract
Combined retrograde transport and immunocytochemical methods were used to determine whether neurons in the Edinger-Westphal complex (EW) that project to the spinal cord also demonstrate corticotropin-releasing factor-like immunoreactivity (CRF-LI). Large injections of horseradish peroxidase (HRP) into cervical spinal cord retrogradely labeled cells throughout the extent of the EW complex. Most retrogradely labeled EW neurons also exhibited CRF-LI, evidence that EW is the origin of a direct CRF-containing pathway which links the rostral mesencephalon with spinal cord.
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Suppression of the jaw-opening reflex by periaqueductal gray stimulation is decreased by paramedian brainstem lesions. Brain Res 1987; 403:172-6. [PMID: 3548886 DOI: 10.1016/0006-8993(87)90140-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Electrical stimulation of the midbrain periaqueductal gray region (PAG) suppresses the tooth pulp-evoked jaw-opening reflex (TP-JOR). In the present study the pathways that mediate this suppression were investigated by placing brainstem lesions in lightly anesthetized cats. Parasagittal lesions that interrupted the afferent and efferent connections of the medullary and pontine raphe nuclei attenuated (but did not abolish) suppression of the TP-JOR evoked by PAG stimulation. This result provides further evidence that medial brainstem structures partially mediate the effects of PAG stimulation in the trigeminal system.
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