Patients

were staged according to the TNM 6th edition (20

Patients

were staged according to the TNM 6th edition (2006) and Barcelona Clinic Liver Cancer staging system.19 Tumor size was based on the largest dimension of the tumor specimen. Tumor grade was scored using the modified nuclear grading scheme outlined by Edmondson and Steiner.20 Grades 1 and 2 were defined as well-differentiated and grades 3 and 4 as moderately/poorly differentiated. The majority of patients in the three cohorts had not received anti-HBV treatment after surgery. The Eastern Cooperative Oncology Group (ECOG) performance score of all patients was 0 or 1. The presence of cirrhosis was also confirmed on the surgical specimen. OS was defined as the NVP-AUY922 solubility dmso time from surgery to death and censored when a patient was alive at last contact. Table 1 shows the pathologic and clinical characteristics of the patients in all five cohorts. All patients had undergone surgical resection as their primary treatment. Patient data were retrospectively collected from medical records. BCLC staging is based on preoperation data, and vasculature

invasion is pathologically defined as the presence of endolymphatic or lymphovascular tumor emboli within tumors. Survival data are not publicly available for the MSH and INSERM cohorts; thus, these patients were not used for survival analyses. For generation of gene expression data from the Korean cohort, total RNA was isolated from tissue samples using a mirVana RNA Isolation labeling kit (Ambion, Austin, TX). Five hundred nanograms Everolimus solubility dmso of total RNA were used for labeling and hybridization, in accordance with the manufacturer’s protocols (Illumina).

After the bead chips were scanned with an Illumina BeadArray Reader (Illumina), the microarray data were normalized using the quantile normalization method in the Linear Models for Microarray Data package in the R language environment (http://www.r-project.org).21 The expression level of each gene was transformed into a log-2 base for further analysis. Primary microarray data are available from the NCBI GEO public database check (accession number GSE16757). BRB-ArrayTools were primarily used for statistical analysis of gene expression data22 and all other statistical analyses were performed in the R language environment. We estimated patient prognoses using Kaplan-Meier plots and the log-rank test. Stratification of patients in the NCI cohort according to Seoul National University (SNU) recurrence signature was done as described.18 Receiver-operating characteristic (ROC) curve analyses were carried out to estimate discriminatory power of the prognostic gene expression signatures and clinical variables. We calculated the area under the curve (AUC), which ranges from 0.5 (for a noninformative predictive marker) to 1 (for a perfect predictive marker) and a bootstrap method (1,000 resampling) was used to calculate the 95% confidence internal (CI) for AUC.

Again, dipyridamole has a great safety record in patients, for ex

Again, dipyridamole has a great safety record in patients, for example, for the prevention of recurrent stroke or to maintain patency of dialysis grafts.[6, 7] As a third approach,

adenosine receptor agonists—particularly for Adora2b could be used. In fact, we recently described and characterized a highly FK866 mouse selective adenosine receptor agonist, BAY 60-6583. Finally, additional therapeutic approaches that would enhance hepatic conversion of ATP to adenosine, for example, by treating with soluble apyrase (conversion of ATP/ADP to AMP),[8-11] or nucleotidase (conversion of AMP to adenosine)[12, 13] could be considered. Taken together, the present studies provide evidence that ENT1 (and to a lesser

degree ENT2) is expressed in human livers. VX-809 chemical structure Subsequent studies in mouse models of liver ischemia and reperfusion point towards a therapeutic role of ENT1 inhibition in this model, as it is associated with elevated hepatic adenosine levels and protective signaling effects through the Adora2b receptor. Future challenges will include clinical studies with ENT inhibitors or Adora2b agonists to examine if the present findings can be translated from bench to bedside. The present research work was supported by 1 KO8HL103900-01 to MZ, an American Heart Association Grant to AG and National Heart Institute Grants R01 DK097075, R01-HL0921, R01-DK083385, R01-HL098294, POIHL114457-01 Pembrolizumab and a grant by the Crohn’s and Colitis Foundation of America (CCFA) to HKE. M.Z., A.G., E.T., S.E., M.K., A.G., M.R.B. researched data. D.S.C., I.K. provided new research tools. H.K.E., A.G., M.Z. wrote the article. Additional Supporting Information may be found in the online version of this article. “
“Radiofrequency ablation (RFA) is commonly used for treating unresectable hepatic malignancies. Some commonly associated complications of RFA include fever, symptomatic pleural effusion, abscess, hepatoma and hepatic insufficiency. Here, we report a case

of diaphragmatic hernia in a patient following RFA for hepatic malignancy with cirrhosis. “
“Induction of heme oxygenase-1 (HO-1) inhibits hepatitis C virus (HCV) replication. Of the products of the reaction catalyzed by HO-1, iron has been shown to inhibit HCV ribonucleic acid (RNA) polymerase, but little is known about the antiviral activity of biliverdin (BV). Herein, we report that BV inhibits viral replication and viral protein expression in a dose-dependent manner in replicons and cells harboring the infectious J6/JFH construct. Using the SensoLyte 620 HCV Protease Assay with a wide wavelength excitation/emission (591 nm/622 nm) fluorescence energy transfer peptide, we found that both recombinant and endogenous nonstructural 3/4A (NS3/4A) protease from replicon microsomes are potently inhibited by BV.

In particular, some confusion is introduced when the observations

In particular, some confusion is introduced when the observations involve intermediate and high purity products, which differ in particular with respect to their content in von Willebrand factor (VWF) but also in other plasma protein that may exert an immunomodulating effect. In fact, the presence of VWF has been suggested to play a role in the immunogenicity of FVIII products [61–63]. On the other hand, other plasma proteins have been suggested to play a role. These contradictory findings emphasize the need of a randomized clinical trial to provide a definite answer on the different

immunogenicity of FVIII products: the SIPPET study (http://www.clinicaltrials.gov, Study NCT 01064284; EUDRACT N. 2009-011186-88). This study aims to test the hypothesis that plasma-derived VWF/FVIII selleck kinase inhibitor products are less immunogenic than rFVIII products. The study is an independent, international, multicentre, prospective, click here controlled, randomized, open-label clinical trial

on inhibitor frequency in PUPs or minimally blood component-treated (MBCTPs) when exposed to plasma-derived, von Willebrand factor-containing factor VIII (VWF/FVIII) concentrates or to rFVIII concentrates. Patients meeting the enrolment criteria will be consecutively enrolled at each participating centre, randomized to be treated exclusively with a single FVIII product either plasma-derived or recombinant, and followed up

until inhibitor development or until 50 exposure days (EDs) or 3 years from enrolment have elapsed, whichever comes first. Two classes of products and not two specific products belonging to these two classes will be compared. This approach will also facilitate to generalize the findings of the study to all the patients who are going to be treated with any product belonging to the class of rFVIII products or to that of plasma-derived VWF/FVIII products. The SIPPET study will also evaluate:  the anamnestic response SPTLC1 of inhibitor patients  the frequency of transient inhibitors Eighty centres from 24 countries in four continents will participate in the study. “
“Factor XIII (FXIII) consists of the A and B subunits (FXIII-A and FXIII-B) and stabilizes fibrin clots. Defects in either the FXIII-A or FXIII-B gene lead to congenital FXIII deficiency, which manifests a life-long haemorrhagic tendency. Thus, prophylactic FXIII replacement therapy is recommended. To establish a management plan for a 30-year-old male patient with ‘indefinite’ FXIII deficiency (<40% of the normal FXIII), he was characterized by state-of-the-art techniques as guided by the FXIII/Fibrinogen subcommittee of ISTH/SSC.

Using this technique, changes in regional tissue volume can be de

Using this technique, changes in regional tissue volume can be detected on the basis of the deformation field derived from the warping subject to the template image. A voxelwise estimation of the morphological differences Alisertib between the two groups can be acquired after applying a threshold (P < .001, uncorrected) to the statistic maps. Regions with enlarged volume in the brains of blind subjects are mainly localized in the left associated visual cortex, posterior cingulated cortex, and cerebellum,

whereas volume reductions are primarily localized in the left early visual cortex. DBM is an effective method for detecting entire brain structural changes in blindness. Visual deprivation actually alters the local structural organization

during the early critical periods of neurodevelopment. Volume increases outside the occipital lobe detected with DBM may suggest compensatory adaptations. Blindness provides a rare model to investigate the effects of visual experience on the functional and structural organization of the human brain.[1] Many studies have demonstrated that the human brain can adapt to changes in the environment through functional reorganization rather than structural plastic changes. The cross-modal plasticity in functional reorganization induced by vision deprivation has also been reported in previous JAK inhibitor review neuroimaging. Plastic changes have been reported in the visual cortex both in the resting state and imaginary, auditory, and tactile tasks,[1-3] and in the early sensory areas of spared modalities after visual deprivation in early life.[4] Compared with functional studies, investigations on the structural reorganization of the brain in blind subjects are few and have only attracted selleck products research attention in recent years. Evidence from the nonhuman primate literature proves that early visual deprivation leads

to changes in the structural anatomy of the visual cortex at the microscopic level.[5], [6] With the development of the imaging technique, the identification of structural changes in the brain on magnetic resonance imaging (MRI) scans is becoming increasingly important in the study of neurological science. Using voxel-based morphometry (VBM) method,[7] previous MRI studies on blindness have reported decreased gray matter (GM) density and increased white matter (WM) density in the sensory–motor system.[8-10] Another useful tool aside from VBM for the analysis of brain morphology from MRI is the deformation-based morphometry (DBM) method which provides an unbiased automated examination of the entire brain with high regional sensitivity.[11] Unlike VBM which focuses on an analysis of differences in GM and WM, DBM can detect the differences in local structures using high-dimensional nonrigid registration. Leporé and colleagues used this technique with fast fluid registration to examine whole brain volumetric changes in both early- and late-onset blind subjects.

[261] The resultant low levels of phosphatidylcholine likely allo

[261] The resultant low levels of phosphatidylcholine likely allow bile acids

with a high detergent quality to injure bile ducts resulting in progressive biliary disease. MDR-3 disease is associated with cholelithiasis, intrahepatic cholestasis of pregnancy, transient neonatal cholestasis, drug-induced cholestasis, and an autosomal recessive cholestatic liver disease associated with a high GGT.[266] The age at presentation can range from infancy to adulthood. Initial symptoms include jaundice, pruritus, and biochemical evidence of hepatic dysfunction. Treatment with ursodeoxycholic acid can result in complete or partial clinical and biochemical improvement, but the disease can be unresponsive and rapidly progressive in about 15% of cases.[266] Among 28 children with MDR3 disease followed by an Italian consortium, one died and five underwent successful Pictilisib research buy LT.[266] Those who died or received an LT had either no response to ursodeoxycholic acid or a partial response that was associated with flares of liver injury and decompensated

cirrhosis. In a Japanese cohort of 717 LRLT recipients, only 14 had PFIC: 11 FIC1, 3 BSEP, and 0 MDR3.[267] 57. Ursodeoxycholic acid therapy followed by partial external biliary diversion (PEBD) or ileal exclusion (IE) should be an early consideration to improve cholestasis and pruritus for children with FIC1 and BSEP disease. (1-B) 58. Patients with BSEP disease should be monitored regularly for the development Selleck Ixazomib of HCC. (2-B) 59. LT in FIC1 disease can be associated with worsening extrahepatic manifestations and should be considered only if PEBD or IE failed or could not be performed. (2-B) 60. Families of children with BSEP disease who require LT should be cautioned that the disease may recur following LT. (2-B) Cetuximab 61. LT evaluation is indicated

for patients with MDR3 disease whose disease fails to respond to ursodeoxycholic acid. (2-B) 62. The use of PFIC heterozygote live donor organs from family members remains a viable and feasible option for FIC1 and BSEP patients requiring LT but ongoing follow-up is needed. (2-B) Liver disease associated with alpha-1 antitrypsin deficiency (A-1ATD) in children has protean manifestations.[268] Only about 7% of children with the PI*ZZ-associated A-1ATD will have any prolonged obstructive jaundice in the first few months of life, and up to 80% of those children will not have evidence of chronic liver disease by 18 years of age.[269, 270] A-1ATD will rarely present with a rapidly progressive, life-threatening liver disease in infancy necessitating LT in the first few months of life.[271] Case studies reveal a portion of children will have a slowly progressive course which may either stabilize or continue toward decompensated liver disease.

Yavuz Beyazit M D *, Murat Kekilli M D *, Tugrul Purnak M D †, Me

Yavuz Beyazit M.D.*, Murat Kekilli M.D.*, Tugrul Purnak M.D.†, Mevlut Kurt M.D.*, * Department of Gastroenterology, Turkiye Yuksek Ihtisas Temozolomide research buy Hospital, Ankara, Turkey, † Department of Gastroenterology, Ankara Numune Education and Research Hospital, Ankara, Turkey. “
“The human hepatitis B virus (HBV) causes acute and chronic infections in humans and

chimpanzees. HBV infects its hosts at minimal inoculation doses and replicates exclusively in hepatocytes. The viral determinants for the pronounced species specificity and the high efficacy to address hepatocytes in vivo are unknown. Previous findings showed that N-terminally myristoylated peptides constituting a receptor binding domain of the HBV large envelope (L)-protein block HBV entry in vitro and in vivo. Here we investigate the ability of such peptidic receptor ligands to target the liver. Injection of radioactively labeled HBVpreS-lipopeptides resulted in rapid accumulation in livers of mice, rats, and dogs but not cynomolgus

monkeys. Without lipid moiety the peptide was excreted by renal filtration, indicating its possible retention through the lipid by serum factors. Organ distribution studies of 26 HBVpreS peptide variants revealed a correlation of HBV infection inhibition activity and the ability to target mouse livers. Together with complementary studies using primary hepatocytes of different species, we hypothesize that HBV hepatotropism is mediated through specific binding of the myristoylated N-terminal preS1-domain of the HBV L-protein to a hepatocyte specific receptor. Moreover, the restricted infectivity of HBV to human primates is Bioactive Compound Library molecular weight not generally determined Farnesyltransferase by the absence of this binding receptor in nonsusceptible hosts

(e.g., mice) but related to postbinding step(s) (e.g., membrane fusion). Conclusion: HBVpreS-lipopeptides target to the liver. This observation has important clinical implications regarding the pharmacokinetic properties of Myrcludex B, the first entry inhibitor for HBV/HDV. In addition, this provides the basis for the application of the peptides as vehicles for hepatocyte-specific drug targeting. (HEPATOLOGY 2013) See Editorial on Page 9 DMSO, dimethylsulfoxide; ge, genome equivalent; HBsAg, hepatitis B surface antigen; HBV, hepatitis B virus; HDV, hepatitis delta virus; L-protein, hepatitis B virus large surface protein; PHH, primary human hepatocytes; PTH, primary Tupaia hepatocytes; p.i., postinfection; RP-HPLC, reversed-phase high-performance liquid chromatography; SPECT/CT, single photon emission computed tomography/computed tomography. The human hepatitis B virus (HBV) causes acute and chronic liver infections. Worldwide, 350 million people are persistently infected.1 Chronic HBV will remain a major global health problem, despite the availability of vaccines. Therapies (interferon-alpha [IFNα] and five nucleoside analogs) are limited and mostly noncurative.

There is a disproportionately small number of UCNS-certified head

There is a disproportionately small number of UCNS-certified headache subspecialists compared with the extensive expected migraine and chronic migraine populations in the United States. More UCNS-accredited fellowship programs and more UCNS-certified headache subspecialists are needed in order to ameliorate this disparity. “
“Refine the classification of migraine subtypes by applying factor mixture models (FMM) to a large

population sample of people with headache. Current classification of primary headache disorders is symptom-based Sorafenib manufacturer and uses somewhat arbitrary boundaries developed by expert consensus. Symptom profiles and headache frequency are used to distinguish among probable migraine (PM), episodic migraine (EM), high-frequency episodic migraine (HFEM), and chronic migraine (CM). Herein, we used statistical approaches to parse the heterogeneity in the broad group of persons with migraine and test the hypothesis

that the groups that emerge differ in prognosis. The American Migraine Prevalence and Prevention study mailed surveys to a sample of 120,000 US households selected to represent the US population in 2004. Follow-up surveys were sent to a random sample of 24,000 respondents with “severe headache” on an annual basis from 2005 to 2009. People meeting International Classification of Headache Disorders, Second Edition, criteria for migraine were classified Target Selective Inhibitor Library solubility dmso as EM (<15 headache days/month) and CM (≥15 headache days/month) based on modified Silberstein–Lipton criteria. The EM group was subdivided into HFEM (10 to 14 headache days/month) and low-frequency episodic migraine (LFEM; <10 headache days/month). Factor mixture models (FMM) identified 5 subgroups of migraine (taxa) using data from the Etomidate 2005 survey on the severity of migraine symptoms, average migraine pain intensity, headache-related disability, cutaneous allodynia and depression,

as well as monthly headache and migraine frequency as determinants of class membership. We assessed the validity of these taxa by examining the distribution of clinical diagnoses at cross-section and the rate of CM onset within these groups. Data from the 2005 American Migraine Prevalence and Prevention survey were used for the FMM and data from the 2006-2009 surveys were used to assess prognosis of groups defined based on FMM. In total, 12,860 participants were eligible for classification analysis, including 10,162 with LFEM and 601 with HFEM, 1302 with probable migraine, and 795 with CM. Of these, 3152 (24.5%), 1076 (8.4%), 3896 (30.3%), 2251 (17.5%), and 2485 (19.3%) were assigned to Taxons 1, 2, 3, 4, and 5, respectively. Overall, there was a strong association between taxon assignment and clinical diagnosis.

2001a) From the available data, it appears that a higher proport

2001a). From the available data, it appears that a higher proportion of odontocetes respond https://www.selleckchem.com/products/Everolimus(RAD001).html to biopsy sampling compared to mysticetes (P < 0.001, Fig. 2), and that the proportion of low and moderate responses varies by group as well (low responses: P < 0.001, moderate responses: P= 0.046, Fig. 2). Low and moderate responses are the predominant responses in mysticetes, and strong is the least observed response (P < 0.05, Fig. 2). For odontocetes, low is the predominant response, followed by moderate, and strong is the least observed response (P < 0.05, Fig. 2). It is also important

to note that strong responses are rarely observed in either group (Fig. 2). Within a species, variable behavioral reactions to biopsy darting have been observed between age- and sex-classes (e.g., see Best et al. 2005, Fig. 3) as well as between individual animals. Finally, behavioral reactions to biopsy darting by nontarget animals have also been observed selleck products (Barrett-Lennard et al. 1996, Weller et al. 1997, Gorgone et al. 2008). As expected, the probability of a nontarget animal reacting to biopsy darting decreases with increasing distance

from the target animal (Gorgone et al. 2008). Differences in the type, intensity and/or frequency of behavioral responses have also been attributed to the methods and equipment used (Weinrich et al. 1991, 1992); type and size of the boat used (Bilgmann et al. 2007a, Gorgone et al. 2008); size of the biopsy dart (Gauthier and Sears 1999, else Krützen et al. 2002); animal’s activity prior to biopsy (Weinrich et al. 1991, 1992; Clapham and Mattila 1993; Brown et al. 1994; Hooker et al. 2001a);

sex of the animal (Clapham and Mattila 1993, Brown et al. 1994, Gauthier and Sears 1999); size of the animal (Mathews 1986); whether the animal is associated with a group of conspecifics (Best et al. 2005); as well as the season, water depth and sea state (Gorgone et al. 2008). In contrast, Jefferson and Hung (2008) found that for both hits and misses, distance to the target animal had very little effect on its reaction. It is conceivable that the equipment and delivery method used during biopsy sampling operations contribute to the propensity of behavioral responses occurring, and possibly, the degree of the response observed. For example, retrieval lines, which can snag on animals, have been implicated in causing animals to react, and in particular, exhibit strong reactions (Weinrich et al. 1991, 1992). From the available data on mysticetes, it appears that when a retrieval line is used, moderate responses tend to be the most frequent while strong responses are the most rare (P= 0.067, Fig. 4). When no retrieval line is used, low and moderate responses are significantly greater than strong responses (P < 0.05, Fig. 4). Although there is no significant difference between the percentage of animals that respond with and without the use of a retrieval line (P= 0.614, Fig.

In the control group of the same genotype (TRRAPf/ΔCre+), only PB

In the control group of the same genotype (TRRAPf/ΔCre+), only PBS was injected intraperitoneally. As another control, TRRAPf/Δ mice lacking Cre (TRRAPf/ΔCre−) were injected with pIpC. All the mice were maintained as approved by the Animal Care and Use Committee of the International Agency for Research on Cancer (Lyon, France) (ACUC 03/4). Mice were divided into three groups: Group 1 = TRRAPf/ΔCre+ www.selleckchem.com/products/BIBW2992.html without pIpC injection; Group 2 = TRRAPf/ΔCre+ with pIpC (to delete TRRAP); and Group 3 = TRRAPf/ΔCre− with pIpC (to compare the effect of pIpC alone).

At least three mice per group were examined per timepoint. Mice were fed a commercial diet and were given water adlibitum. To induce hepatic injury, 10 μL/g body weight of 10% solution of CCl4 in olive oil or olive oil alone was injected intraperitoneally 48 hours after the last pIpC injection, and the mice were sacrificed at the times indicated. Selleck C59 wnt Forty-eight hours after the third injection of pIpC was considered 0 hour for the collection of samples after CCl4 treatment. Mice were sacrificed and part of the liver was removed and fixed

in 4% paraformaldehyde for paraffin-embedded sectioning. Other parts of the liver were removed and frozen in liquid nitrogen and kept at −80°C for preparation of protein lysates and total RNA. Histologic and immunohistochemical analyses were performed after staining either with hematoxylin and eosin stain (H&E) or with Feulgen-solution (Schiff’s base) or were left unstained for marker analysis. 5-Bromo-2-deoxyuridine (BrdU) and proliferating cell nuclear antigen (PCNA) staining was performed as described,17 using specific antibodies (Supporting Table 1) and Vectastatin ABC alkaline phosphatase kit or ABC peroxidase kit (Vector Laboratories). At least 5,000 cells were scored for BrdU and PCNA index. Western blot analysis of liver nuclear proteins was carried out as described,13 using specific antibodies (Supporting Table 1). The ChIP assay was performed as described18 and Tangeritin according

to the manufacturer’s recommendations (Upstate Biotechnology, Lake Placid, NY), using polyclonal antibodies specific for histone modifications and transcription factors (Supporting Table 1). The recovered DNA was then analyzed by PCR using primers recognizing different regions of the cyclin A1 promoter (Supporting Table 2). For statistical analysis we used Student’s t test for comparison between groups. P-values <0.05 were considered statistically significant. To study the function of TRRAP and TRRAP-mediated histone acetylation in transcription and cell proliferation during tissue regeneration in response to acute liver injury, we used TRRAP-CKO mice that allow inducible deletion in vivo of the TRRAP gene in a spatiotemporal manner (Fig. 1A).

Six hundred and one migraine patients completed measures of pain-

Six hundred and one migraine patients completed measures of pain-specific disability (Migraine Disability Assessment Scale, von Korff scale), health-related quality of life (Short Form-12 Health Survey), habitual well-being

(Marburg questionnaire), and anxiety and depression (Hospital Anxiety and Depression Score). A significant increase of psychosocial impairment with the number of headache days per month was found at lower headache frequencies, but leveled off at higher headache frequencies. Visual inspection and spline interpolation suggested that the turning point selleck screening library was not exactly at 15 headache days per month but rather around 13.3 (confidence interval: 8.9-17.7) days. Accordingly, significant correlations between headache days and psychosocial impairment were found in the group with ≤13 headache days per month (Spearman’s rho = 0.25, P < .001) but not in the group with >13 headache days (rho = −0.02, n.s.). These results suggest that a meaningful turning point in psychosocial impairment associated with migraine is

located around 13.3 headache days per month, somewhat below the 15-headache days criterion that by definition separates chronic from episodic migraine. However, confidence intervals surrounding the turning point were large. Further studies will be needed to more exactly localize the turning point. “
“Objective.— To determine if 5-HT1D receptors are located in the sphenopalatine ganglion. Background.— While www.selleckchem.com/products/Deforolimus.html the 5-HT1D receptor has been described in sensory and sympathetic ganglia in the head, it was not known whether

they were also located in parasympathetic ganglia. Methods.— We used retrograde labeling combined with immunohistochemistry to examine 5-HT1D receptor immunoreactivity in rat sphenopalatine ganglion neurons that project to the lacrimal gland, nasal mucosa, cerebral vasculature, and trigeminal ganglion. Results.— We found 5-HT1D receptor immunoreactivity in nerve terminals around postganglionic cell bodies within the sphenopalatine ganglion. All 5-HT1D-immunoreactive Loperamide terminals were also immunoreactive for calcitonin gene-related peptide but not vesicular acetylcholine transporter, suggesting that they were sensory and not preganglionic parasympathetic fibers. Our retrograde labeling studies showed that approximately 30% of sphenopalatine ganglion neurons innervating the lacrimal gland, 23% innervating the nasal mucosa, and 39% innervating the trigeminal ganglion were in apparent contact with 5-HT1D receptor containing nerve terminals. Conclusion.— These data suggest that 5-HT1D receptors within primary afferent neurons that innervate the sphenopalatine ganglion are in a position to modulate the excitability of postganglionic parasympathetic neurons that innervate the lacrimal gland and nasal mucosa, as well as the trigeminal ganglion.