Olfactory receptors (ORs) form the largest superfamily of G protein-coupled receptors (GPCRs). Traditionally recognized for their role in the nasal olfactory epithelium, where they mediate the sense of smell, accumulating evidence has firmly established their ectopic expression in non-olfactory tissues, including the intestine, lungs, and kidneys. The intestine, as the primary site for nutrient digestion and absorption, harbors a highly complex chemical environment. To adapt to this environment, the gut employs a sophisticated network of “chemosensors” to monitor luminal contents and maintain homeostasis. Among these sensors, intestinal ORs have emerged as crucial functional components, serving as a molecular bridge that connects environmental chemical signals—such as food-derived odorants—to specific physiological responses. This discovery has significantly deepened our understanding of how dietary flavors and compounds influence intestinal physiology at the molecular level. This review systematically summarizes the expression profiles, ligand classification, and biological functions of ORs within the gastrointestinal tract. Studies indicate that intestinal ORs exhibit distinct spatial distribution patterns across different gut segments and display cell-type specificity, particularly within enterocytes and enteroendocrine cells. These receptors function as versatile sensors capable of recognizing a wide variety of ligands, including exogenous dietary components, gut microbiota metabolites such as short-chain fatty acids, and endogenous small molecules like azelaic acid. Upon activation by specific ligands, intestinal ORs trigger intracellular signaling cascades, primarily involving the AC-cAMP-PKA pathway or calcium influx channels. A major focus of this review is to elucidate the molecular mechanisms by which these receptors regulate the secretion of gut hormones. Activation of specific ORs in enteroendocrine cells has been shown to stimulate the release of hormones such as glucagon-like peptide-1 (GLP-1), peptide YY (PYY), and serotonin (5-HT), thereby modulating systemic energy metabolism, glucose homeostasis, and gastrointestinal motility. Furthermore, the review addresses the critical roles of ORs in immune regulation and pathology. Evidence suggests that specific ORs contribute to the maintenance of intestinal immune homeostasis and may offer protection against inflammation. Beyond their involvement in inflammatory responses, ORs such as Olfr78 have been shown to regulate the differentiation and function of intestinal endocrine cells. Similarly, Olfr544 has been demonstrated to alleviate intestinal inflammation by remodeling the gut microbiome and metabolome. These findings collectively suggest that specific ORs hold promise as therapeutic targets for mitigating intestinal inflammation and maintaining gut homeostasis. Additionally, the review explores the emerging role of ORs in cancer. Although OR expression is often downregulated in tumor tissues compared to normal mucosa, activation of specific ORs by certain ligands can inhibit tumor cell proliferation and migration and induce apoptosis via pathways such as MEK/ERK and p38 MAPK. Conversely, other receptors, such as OR7C1, may serve as biomarkers for cancer-initiating cells. In conclusion, intestinal ORs represent a vital component of the gut’s sensory network. The review also discusses the translational potential of these findings. By elucidating the precise pairing relationships between dietary components and specific ORs, novel therapeutic strategies could be developed. Intestinal ORs may thus emerge as promising targets for nutritional and pharmacological interventions in metabolic diseases, inflammatory bowel diseases, and malignancies.

Objective:To explore the therapeutic effect of Banxia Baizhu Tianma Decoction on phlegm-dampness-blocking cervical vertigo and its influence on neck hemodynamics.Methods:96 patients with phlegm-dampness block type cervical vertigo admitted to our hospital from January 2022 to January 2024 were divided into control group and observation group,48 cases in each group.The control group was treated with conventional Western medicine,and the observation group was treated with Banxia Baizhu Tianma Decoction.Both groups were treated for 4 weeks and followed up for 6 months.The reduction time and disappearance time of vertigo were recorded.The score of cervical vertigo Symptom and Function Assessment Scale(ESCV)was performed before treatment and 1 day after treatment.The average blood flow level of basilar artery,right vertebral artery and left vertebral artery was detected,and the total clinical effective rate,recurrence rate and adverse reaction rate of the two groups were compared.Results:The reduction time and disappearance time of vertigo in the observation group were shorter than those in the control group(P＜0.05).Post-treatment,the ESCV score of both groups was higher than that before treatment;compared with the control group,the ESCV score of the observation group was higher post-treatment(P＜0.05).The total clinical effective rate of observation group was higher than that of control group,and the recurrence rate was lower than that of control group(P＜0.05).The hemodynamic index were higher after treatment than in the control group(P＜0.05).There was no difference in the incidence of adverse reactions between the two groups(P＞0.05).Conclusion:Banxia Baizhu Tianma Decoction has certain curative effect on phlegm-dampness block type cervical vertigo,can effectively relieve vertigo symptoms,reduce recurrence,improve neck hemodynamics,and is safe,worthy of popularization and application.

Objective:To investigate the effect of innovative perioperative pain management on prostate cancer patients with he-maturia undergoing prostatic artery embolization(PAE).Methods:A total of 60 patients undergoing PAE in the Interventional Ther-apy Department of General Hospital of Eastern Theater Command from May 2024 to January 2025 were selected by convenience sam-pling method and randomly divided into the intervention group and the control group,with 30 patients in each group.The control group received traditional pain management of nursing.An innovative perioperative pain management was performed in intervention group in-cluding preoperative"body-mind-pain"holistic assessment and preparation,intraoperative humanistic care and real-time support,post-operative multimodal analgesia and rehabilitation,dynamic monitoring and closed-loop feedback.The pain degree after 6 hours,1 day,3 days and 1 week of the operation,and the quality of life after 1 week of operation,as well as nursing satisfaction at discharge were compared between the two groups.Results:The VAS scores of the intervention group were significantly lower than those of the con-trol group after 6 hours,1 day,3 days and 1 week of operation(P＜0.05).One week after the operation,the quality of life in the ob-servation group was higher than that of the control group significantly(P＜0.05).The nursing satisfaction of the observation group was significantly higher than that of the control group at discharge(P＜0.05).Conclusion:The application of innovative perioperative pain management can alleviate pain of patients with PAE,which improves the quality of life and nursing satisfaction of patients,and is conducive to the rehabilitation of patients.

To investigate the clinical features and peripheral blood immune cell subsets ofelderly (≥60 years old) onset rheumatoid arthritis (EORA) patients.

Objective:Primary sclerosing cholangitis (PSC) is a rare autoimmune disease. This study aims to describe the baseline characteristics and clinical outcomes of Chinese PSC patients and explore risk factors associated with prognosis, addressing the lack of long-term prognostic analysis in China.Methods:Clinical data of PSC patients were retrospectively collected from May 2009 to June 2023 in Beijing Friendship Hospital Affiliated to Capital Medical University, and patient follow-up was conducted through outpatient visits, telephone calls, and medical record reviews. The Cox proportional hazards model and the Kaplan-Meier method were employed to identify risk factors and estimate transplant-free survival.Results:A total of 65 PSC patients were enrolled, with male patients accounting for 50.8% and an average age of onset of 44 years. The disease types primarily included large duct PSC (57.9%) and whole duct PSC (22.8%). Most patients (78.5%) sought medical attention due to symptoms, with common clinical manifestations including jaundice (32.3%), fatigue (23.1%), abdominal discomfort (21.5%), pruritus (16.9%), and fever (10.8%). A total of 19 patients (29.2%) had concomitant ulcerative colitis. Compared to large duct PSC or whole duct PSC, small duct PSC showed a lower proportion of concomitant ulcerative colitis ( P<0.001) and milder baseline disease severity. After a median follow-up of 29 months (interquartile range: 11,53), 19 patients experienced liver transplantations and/or liver disease-related deaths. The overall 2-year and 5-year transplant-free survival rates for PSC patients were 76.0% and 59.5%, respectively. Elevated bile acid levels were identified as an independent risk factor for poor outcomes in PSC patients. Conclusion:The study population of Chinese PSC patients predominantly consisted of middle-aged males, characterized by a low ratio of asymptomatic cases, a low incidence of associated inflammatory bowel disease, and a low rate of transplant-free survival. Elevated bile acid level was identified as an independent risk factor for poor outcomes in PSC patients.

Objective To explore the diagnostic value of 68Ga-PSMA-11 PET/CT combined with abnormal prothrombin(PIVKA-Ⅱ)in the diagnosis of different tumors.Methods A total of 200 patients with suspected cancer who underwent examinations in the Affiliated Hospital of Southwest Medical University from September 2021 to December 2023 were retrospectively selected,including 51 suspected liver cancer,49 suspected pancreatic cancer,52 suspected rectal cancer and 48 suspected prostate cancer.All patients underwent both serum PIVKA-Ⅱ testing and 68Ga-PSMA-11 PET/CT imaging.Receiver operating characteristic(ROC)curve analysis was used to assess the diagnostic performance of 68Ga-PSMA-11 PET/CT and serum PIVKA-Ⅱ for liver cancer,pancreatic cancer,rectal cancer and prostate cancer.Results No significant differences were found in general data of 4 suspected tumor groups(P>0.05)except for age.Serum PIVKA-Ⅱ levels were significantly higher in patients with suspected liver cancer and rectal cancer compared with those with suspected pancreatic cancer and prostate cancer(P<0.05).No significant difference was observed in the serum PIVKA-Ⅱ levels between suspected pancreatic cancer group and suspected prostate cancer group(P>0.05).The positive rates of 68Ga-PSMA-11 PET/CT and serum PIVKA-Ⅱ for diagnosing liver,pancreatic,rectal,and prostate cancers were significantly lower than those of pathological examination(49.0%vs.47.1%vs.92.2%,57.1%vs.55.1%vs.87.8%,48.1%vs.44.2%vs.92.3%,64.6%vs.62.5%vs.89.6%,respectively,P<0.05).ROC curve analysis showed that serum PIVKA-Ⅱ had a sensitivity of 79.06%,specificity of 72.02%,area under ROC curve(AUC)of 0.822,and Youden index of 0.512.For 68Ga-PSMA-11 PET/CT,the sensitivity was 79.11%,specificity 72.07%,AUC 0.829,and Youden index 0.510.The combined use of 68Ga-PSMA-11 PET/CT and serum PIVKA-Ⅱ achieved higher diagnostic accuracy,with a sensitivity of 93.28%,specificity of 81.15%,AUC of 0.924 and Youden index of 0.744,all surpassing the single index.Conclusion Both 68Ga-PSMA-11 PET/CT and serum PIVKA-Ⅱ are effective diagnostic tools for liver,pancreatic,rectal,and prostate cancers,with the combined approach yielding superior diagnostic performance.

Objective To investigate the value of the maximum standard uptake value(SUVmax)obtained with orbital SEPCT/CT for evaluating activity of thyroid-associated ophthalmopathy(TAO)and predicting curative efficacy.Methods A total of 96 patients with initially diagnosed TAO were retrospectively collected,including 71 with clinical activity score(CAS)≥3(active group)and 25 with CAS=2(inactive group).Data of orbital SEPCT/CT were collected,and the patients were treated with hormones or immunosuppressants for 3 months.CAS was performed again within 1 week after treatment,and orbital imaging was reviewed.The patients were divided into effective group and ineffective group according to treatment results.Pretreatment(pre)SUVmax(pre-SUVmax)and imaging agent uptake rate(UR)(pre-UR)in extraocular muscle were compared between active and inactive groups.Pre-CAS,post-treatment(post)CAS(post-CAS),as well as pre-SUVmax,post-SUVmax,pre-UR,post-UR and the difference of pre-and post-treatment CAS,SUVmax and UR(△CAS,△UR,△SUVmax)of extraocular muscle were compared between effective group and ineffective group.The correlations of SUVmax,UR and CAS were analyzed.Pre-CAS,pre-SUVmax and pre-UR were included in univariate and multivariate logistic regression analysis to screen the predictors of effective treatment of TAO.Results Pre-SUVmax and pre-UR of extraocular muscle in active group were higher than those in inactive group(both P＜0.05).Among 96 cases,70 were in effective group and 26 were in ineffective group.Pre-CAS,the proportion of pre-CAS≥3 scores,pre-SUVmax,pre-UR,△CAS,△SUVmax and △UR in effective group were all higher than those in ineffective group(all P＜0.05).Pre-SUVmax and pre-UR in extraocular muscle of TAO patients were positively correlated with pre-CAS(rs=0.419,0.395,both P＜0.001),while post-SUVmax and post-UR were positively correlated with post-CAS(rs=0.322,0.221,P=0.001,0.030),△SUVmax and △UR were positively correlated with △CAS(rs=0.368,0.206,P＜0.001,P=0.044).Pre-CAS≥3(OR=2.95)and pre-SUVmax(OR=4.22)were both independent predictors of effective treatment of TAO(both P＜0.05).Conclusion SUVmax obtained with orbital SEPCT/CT could be used to quantitatively assess TAO activity and predict curative efficacy.

Objective:To explore the therapeutic effect of Banxia Baizhu Tianma Decoction on phlegm-dampness-blocking cervical vertigo and its influence on neck hemodynamics.Methods:96 patients with phlegm-dampness block type cervical vertigo admitted to our hospital from January 2022 to January 2024 were divided into control group and observation group,48 cases in each group.The control group was treated with conventional Western medicine,and the observation group was treated with Banxia Baizhu Tianma Decoction.Both groups were treated for 4 weeks and followed up for 6 months.The reduction time and disappearance time of vertigo were recorded.The score of cervical vertigo Symptom and Function Assessment Scale(ESCV)was performed before treatment and 1 day after treatment.The average blood flow level of basilar artery,right vertebral artery and left vertebral artery was detected,and the total clinical effective rate,recurrence rate and adverse reaction rate of the two groups were compared.Results:The reduction time and disappearance time of vertigo in the observation group were shorter than those in the control group(P＜0.05).Post-treatment,the ESCV score of both groups was higher than that before treatment;compared with the control group,the ESCV score of the observation group was higher post-treatment(P＜0.05).The total clinical effective rate of observation group was higher than that of control group,and the recurrence rate was lower than that of control group(P＜0.05).The hemodynamic index were higher after treatment than in the control group(P＜0.05).There was no difference in the incidence of adverse reactions between the two groups(P＞0.05).Conclusion:Banxia Baizhu Tianma Decoction has certain curative effect on phlegm-dampness block type cervical vertigo,can effectively relieve vertigo symptoms,reduce recurrence,improve neck hemodynamics,and is safe,worthy of popularization and application.

Objective To investigate the value of the maximum standard uptake value(SUVmax)obtained with orbital SEPCT/CT for evaluating activity of thyroid-associated ophthalmopathy(TAO)and predicting curative efficacy.Methods A total of 96 patients with initially diagnosed TAO were retrospectively collected,including 71 with clinical activity score(CAS)≥3(active group)and 25 with CAS=2(inactive group).Data of orbital SEPCT/CT were collected,and the patients were treated with hormones or immunosuppressants for 3 months.CAS was performed again within 1 week after treatment,and orbital imaging was reviewed.The patients were divided into effective group and ineffective group according to treatment results.Pretreatment(pre)SUVmax(pre-SUVmax)and imaging agent uptake rate(UR)(pre-UR)in extraocular muscle were compared between active and inactive groups.Pre-CAS,post-treatment(post)CAS(post-CAS),as well as pre-SUVmax,post-SUVmax,pre-UR,post-UR and the difference of pre-and post-treatment CAS,SUVmax and UR(△CAS,△UR,△SUVmax)of extraocular muscle were compared between effective group and ineffective group.The correlations of SUVmax,UR and CAS were analyzed.Pre-CAS,pre-SUVmax and pre-UR were included in univariate and multivariate logistic regression analysis to screen the predictors of effective treatment of TAO.Results Pre-SUVmax and pre-UR of extraocular muscle in active group were higher than those in inactive group(both P＜0.05).Among 96 cases,70 were in effective group and 26 were in ineffective group.Pre-CAS,the proportion of pre-CAS≥3 scores,pre-SUVmax,pre-UR,△CAS,△SUVmax and △UR in effective group were all higher than those in ineffective group(all P＜0.05).Pre-SUVmax and pre-UR in extraocular muscle of TAO patients were positively correlated with pre-CAS(rs=0.419,0.395,both P＜0.001),while post-SUVmax and post-UR were positively correlated with post-CAS(rs=0.322,0.221,P=0.001,0.030),△SUVmax and △UR were positively correlated with △CAS(rs=0.368,0.206,P＜0.001,P=0.044).Pre-CAS≥3(OR=2.95)and pre-SUVmax(OR=4.22)were both independent predictors of effective treatment of TAO(both P＜0.05).Conclusion SUVmax obtained with orbital SEPCT/CT could be used to quantitatively assess TAO activity and predict curative efficacy.

Objective:Primary sclerosing cholangitis (PSC) is a rare autoimmune disease. This study aims to describe the baseline characteristics and clinical outcomes of Chinese PSC patients and explore risk factors associated with prognosis, addressing the lack of long-term prognostic analysis in China.Methods:Clinical data of PSC patients were retrospectively collected from May 2009 to June 2023 in Beijing Friendship Hospital Affiliated to Capital Medical University, and patient follow-up was conducted through outpatient visits, telephone calls, and medical record reviews. The Cox proportional hazards model and the Kaplan-Meier method were employed to identify risk factors and estimate transplant-free survival.Results:A total of 65 PSC patients were enrolled, with male patients accounting for 50.8% and an average age of onset of 44 years. The disease types primarily included large duct PSC (57.9%) and whole duct PSC (22.8%). Most patients (78.5%) sought medical attention due to symptoms, with common clinical manifestations including jaundice (32.3%), fatigue (23.1%), abdominal discomfort (21.5%), pruritus (16.9%), and fever (10.8%). A total of 19 patients (29.2%) had concomitant ulcerative colitis. Compared to large duct PSC or whole duct PSC, small duct PSC showed a lower proportion of concomitant ulcerative colitis ( P<0.001) and milder baseline disease severity. After a median follow-up of 29 months (interquartile range: 11,53), 19 patients experienced liver transplantations and/or liver disease-related deaths. The overall 2-year and 5-year transplant-free survival rates for PSC patients were 76.0% and 59.5%, respectively. Elevated bile acid levels were identified as an independent risk factor for poor outcomes in PSC patients. Conclusion:The study population of Chinese PSC patients predominantly consisted of middle-aged males, characterized by a low ratio of asymptomatic cases, a low incidence of associated inflammatory bowel disease, and a low rate of transplant-free survival. Elevated bile acid level was identified as an independent risk factor for poor outcomes in PSC patients.