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 investigate the incidence rate,clinical characteristics,and prognosis of neonatal stroke in Shenzhen,China.Methods Led by Shenzhen Children's Hospital,the Shenzhen Neonatal Data Collaboration Network organized 21 institutions to collect 36 cases of neonatal stroke from January 2020 to December 2022.The incidence,clinical characteristics,treatment,and prognosis of neonatal stroke in Shenzhen were analyzed.Results The incidence rate of neonatal stroke in 21 hospitals from 2020 to 2022 was 1/15 137,1/6 060,and 1/7 704,respectively.Ischemic stroke accounted for 75％(27/36);boys accounted for 64％(23/36).Among the 36 neonates,31(86％)had disease onset within 3 days after birth,and 19(53％)had convulsion as the initial presentation.Cerebral MRI showed that 22 neonates(61％)had left cerebral infarction and 13(36％)had basal ganglia infarction.Magnetic resonance angiography was performed for 12 neonates,among whom 9(75％)had involvement of the middle cerebral artery.Electroencephalography was performed for 29 neonates,with sharp waves in 21 neonates(72％)and seizures in 10 neonates(34％).Symptomatic/supportive treatment varied across different hospitals.Neonatal Behavioral Neurological Assessment was performed for 12 neonates(33％,12/36),with a mean score of(32±4)points.The prognosis of 27 neonates was followed up to around 12 months of age,with 44％(12/27)of the neonates having a good prognosis.Conclusions Ischemic stroke is the main type of neonatal stroke,often with convulsions as the initial presentation,involvement of the middle cerebral artery,sharp waves on electroencephalography,and a relatively low neurodevelopment score.Symptomatic/supportive treatment is the main treatment method,and some neonates tend to have a poor prognosis.

Objective:To investigate the relationship between the number of removed lymph nodes(RLN)and patient prognosis during radical surgery for extensive cervical cancer(CC).Methods:Clinical data of 21416 pa-tients with CC who underwent radical hysterectomy between January 1,2004 to August 31,2018 in the Chinese Cervical Cancer Clinical Study was retrospectively reviewed.Restricted cubic spline(RCS)was used to analyze the dose-response relationship between the number of RLN and prognosis.The patients were divided into three groups according to the RCS and RLN number:1-17 group(8733 cases),18-26 group(8189 cases),and≥ 27 group(4494 cases).Kaplan-Meier survival analysis and Log-Rank tests were used to compare the OS rates and DFS rates between groups at 3 and 5 years.Multivariate Cox proportional hazards model was used to analyze the prognostic mortality risk.Results:① RCS results showed a U-shaped nonlinear dose-response relationship be-tween the number of RLN and prognosis(P＜0.01).When the number of RLN was less than 26,the risk of death decreased as the number of RLN increased,and the risk was lowest when the number of RLN was 26.②There were statistically significant differences(P＜0.05)in age,histological type,tumor diameter,nerve invasion,uterine invasion,vaso-lymph node space invasion,cervical invasion,number of lymph node metastasis,whether preopera-tive adjuvant therapy was received,postoperative adjuvant therapy,and whether postoperative adjuvant therapy was standardized among the 3 groups(P＜0.05).③Kaplan-Meier survival curve analysis showed that the 5-year OS of the 1-17 group,18-26 group,and ≥ 27 group were 90.23％,92.28％,and 91.61％,respectively,and the 5-year DFS were 85.32％,87.90％,and 87.18％,respectively.The differences between the three groups were sta-tistically significant(P＜0.01).④The results of multivariate Cox regression analysis showed that RLN number in the range of 1-17 was a significant risk factor for the 3-and 5-year OS and DFS,when compared to the 18-26 RLN group(HR＞1,P＜0.05).Conclusions:RLN number may be one of the prognostic indicators of CC.When the number of RLNs is between 18-26,the prognosis of the patient may be better.The number of RLN in the range of 1-17 may increase the risk of recurrence or death in CC patients.

Objective:To investigate the relationship between the number of removed lymph nodes(RLN)and patient prognosis during radical surgery for extensive cervical cancer(CC).Methods:Clinical data of 21416 pa-tients with CC who underwent radical hysterectomy between January 1,2004 to August 31,2018 in the Chinese Cervical Cancer Clinical Study was retrospectively reviewed.Restricted cubic spline(RCS)was used to analyze the dose-response relationship between the number of RLN and prognosis.The patients were divided into three groups according to the RCS and RLN number:1-17 group(8733 cases),18-26 group(8189 cases),and≥ 27 group(4494 cases).Kaplan-Meier survival analysis and Log-Rank tests were used to compare the OS rates and DFS rates between groups at 3 and 5 years.Multivariate Cox proportional hazards model was used to analyze the prognostic mortality risk.Results:① RCS results showed a U-shaped nonlinear dose-response relationship be-tween the number of RLN and prognosis(P＜0.01).When the number of RLN was less than 26,the risk of death decreased as the number of RLN increased,and the risk was lowest when the number of RLN was 26.②There were statistically significant differences(P＜0.05)in age,histological type,tumor diameter,nerve invasion,uterine invasion,vaso-lymph node space invasion,cervical invasion,number of lymph node metastasis,whether preopera-tive adjuvant therapy was received,postoperative adjuvant therapy,and whether postoperative adjuvant therapy was standardized among the 3 groups(P＜0.05).③Kaplan-Meier survival curve analysis showed that the 5-year OS of the 1-17 group,18-26 group,and ≥ 27 group were 90.23％,92.28％,and 91.61％,respectively,and the 5-year DFS were 85.32％,87.90％,and 87.18％,respectively.The differences between the three groups were sta-tistically significant(P＜0.01).④The results of multivariate Cox regression analysis showed that RLN number in the range of 1-17 was a significant risk factor for the 3-and 5-year OS and DFS,when compared to the 18-26 RLN group(HR＞1,P＜0.05).Conclusions:RLN number may be one of the prognostic indicators of CC.When the number of RLNs is between 18-26,the prognosis of the patient may be better.The number of RLN in the range of 1-17 may increase the risk of recurrence or death in CC patients.

Objective:To investigate the relationship between the number of removed lymph nodes(RLN)and patient prognosis during radical surgery for extensive cervical cancer(CC).Methods:Clinical data of 21416 pa-tients with CC who underwent radical hysterectomy between January 1,2004 to August 31,2018 in the Chinese Cervical Cancer Clinical Study was retrospectively reviewed.Restricted cubic spline(RCS)was used to analyze the dose-response relationship between the number of RLN and prognosis.The patients were divided into three groups according to the RCS and RLN number:1-17 group(8733 cases),18-26 group(8189 cases),and≥ 27 group(4494 cases).Kaplan-Meier survival analysis and Log-Rank tests were used to compare the OS rates and DFS rates between groups at 3 and 5 years.Multivariate Cox proportional hazards model was used to analyze the prognostic mortality risk.Results:① RCS results showed a U-shaped nonlinear dose-response relationship be-tween the number of RLN and prognosis(P＜0.01).When the number of RLN was less than 26,the risk of death decreased as the number of RLN increased,and the risk was lowest when the number of RLN was 26.②There were statistically significant differences(P＜0.05)in age,histological type,tumor diameter,nerve invasion,uterine invasion,vaso-lymph node space invasion,cervical invasion,number of lymph node metastasis,whether preopera-tive adjuvant therapy was received,postoperative adjuvant therapy,and whether postoperative adjuvant therapy was standardized among the 3 groups(P＜0.05).③Kaplan-Meier survival curve analysis showed that the 5-year OS of the 1-17 group,18-26 group,and ≥ 27 group were 90.23％,92.28％,and 91.61％,respectively,and the 5-year DFS were 85.32％,87.90％,and 87.18％,respectively.The differences between the three groups were sta-tistically significant(P＜0.01).④The results of multivariate Cox regression analysis showed that RLN number in the range of 1-17 was a significant risk factor for the 3-and 5-year OS and DFS,when compared to the 18-26 RLN group(HR＞1,P＜0.05).Conclusions:RLN number may be one of the prognostic indicators of CC.When the number of RLNs is between 18-26,the prognosis of the patient may be better.The number of RLN in the range of 1-17 may increase the risk of recurrence or death in CC patients.

Objective:To investigate the relationship between the number of removed lymph nodes(RLN)and patient prognosis during radical surgery for extensive cervical cancer(CC).Methods:Clinical data of 21416 pa-tients with CC who underwent radical hysterectomy between January 1,2004 to August 31,2018 in the Chinese Cervical Cancer Clinical Study was retrospectively reviewed.Restricted cubic spline(RCS)was used to analyze the dose-response relationship between the number of RLN and prognosis.The patients were divided into three groups according to the RCS and RLN number:1-17 group(8733 cases),18-26 group(8189 cases),and≥ 27 group(4494 cases).Kaplan-Meier survival analysis and Log-Rank tests were used to compare the OS rates and DFS rates between groups at 3 and 5 years.Multivariate Cox proportional hazards model was used to analyze the prognostic mortality risk.Results:① RCS results showed a U-shaped nonlinear dose-response relationship be-tween the number of RLN and prognosis(P＜0.01).When the number of RLN was less than 26,the risk of death decreased as the number of RLN increased,and the risk was lowest when the number of RLN was 26.②There were statistically significant differences(P＜0.05)in age,histological type,tumor diameter,nerve invasion,uterine invasion,vaso-lymph node space invasion,cervical invasion,number of lymph node metastasis,whether preopera-tive adjuvant therapy was received,postoperative adjuvant therapy,and whether postoperative adjuvant therapy was standardized among the 3 groups(P＜0.05).③Kaplan-Meier survival curve analysis showed that the 5-year OS of the 1-17 group,18-26 group,and ≥ 27 group were 90.23％,92.28％,and 91.61％,respectively,and the 5-year DFS were 85.32％,87.90％,and 87.18％,respectively.The differences between the three groups were sta-tistically significant(P＜0.01).④The results of multivariate Cox regression analysis showed that RLN number in the range of 1-17 was a significant risk factor for the 3-and 5-year OS and DFS,when compared to the 18-26 RLN group(HR＞1,P＜0.05).Conclusions:RLN number may be one of the prognostic indicators of CC.When the number of RLNs is between 18-26,the prognosis of the patient may be better.The number of RLN in the range of 1-17 may increase the risk of recurrence or death in CC patients.

Objective:To investigate the relationship between the number of removed lymph nodes(RLN)and patient prognosis during radical surgery for extensive cervical cancer(CC).Methods:Clinical data of 21416 pa-tients with CC who underwent radical hysterectomy between January 1,2004 to August 31,2018 in the Chinese Cervical Cancer Clinical Study was retrospectively reviewed.Restricted cubic spline(RCS)was used to analyze the dose-response relationship between the number of RLN and prognosis.The patients were divided into three groups according to the RCS and RLN number:1-17 group(8733 cases),18-26 group(8189 cases),and≥ 27 group(4494 cases).Kaplan-Meier survival analysis and Log-Rank tests were used to compare the OS rates and DFS rates between groups at 3 and 5 years.Multivariate Cox proportional hazards model was used to analyze the prognostic mortality risk.Results:① RCS results showed a U-shaped nonlinear dose-response relationship be-tween the number of RLN and prognosis(P＜0.01).When the number of RLN was less than 26,the risk of death decreased as the number of RLN increased,and the risk was lowest when the number of RLN was 26.②There were statistically significant differences(P＜0.05)in age,histological type,tumor diameter,nerve invasion,uterine invasion,vaso-lymph node space invasion,cervical invasion,number of lymph node metastasis,whether preopera-tive adjuvant therapy was received,postoperative adjuvant therapy,and whether postoperative adjuvant therapy was standardized among the 3 groups(P＜0.05).③Kaplan-Meier survival curve analysis showed that the 5-year OS of the 1-17 group,18-26 group,and ≥ 27 group were 90.23％,92.28％,and 91.61％,respectively,and the 5-year DFS were 85.32％,87.90％,and 87.18％,respectively.The differences between the three groups were sta-tistically significant(P＜0.01).④The results of multivariate Cox regression analysis showed that RLN number in the range of 1-17 was a significant risk factor for the 3-and 5-year OS and DFS,when compared to the 18-26 RLN group(HR＞1,P＜0.05).Conclusions:RLN number may be one of the prognostic indicators of CC.When the number of RLNs is between 18-26,the prognosis of the patient may be better.The number of RLN in the range of 1-17 may increase the risk of recurrence or death in CC patients.

Objective:To investigate the relationship between the number of removed lymph nodes(RLN)and patient prognosis during radical surgery for extensive cervical cancer(CC).Methods:Clinical data of 21416 pa-tients with CC who underwent radical hysterectomy between January 1,2004 to August 31,2018 in the Chinese Cervical Cancer Clinical Study was retrospectively reviewed.Restricted cubic spline(RCS)was used to analyze the dose-response relationship between the number of RLN and prognosis.The patients were divided into three groups according to the RCS and RLN number:1-17 group(8733 cases),18-26 group(8189 cases),and≥ 27 group(4494 cases).Kaplan-Meier survival analysis and Log-Rank tests were used to compare the OS rates and DFS rates between groups at 3 and 5 years.Multivariate Cox proportional hazards model was used to analyze the prognostic mortality risk.Results:① RCS results showed a U-shaped nonlinear dose-response relationship be-tween the number of RLN and prognosis(P＜0.01).When the number of RLN was less than 26,the risk of death decreased as the number of RLN increased,and the risk was lowest when the number of RLN was 26.②There were statistically significant differences(P＜0.05)in age,histological type,tumor diameter,nerve invasion,uterine invasion,vaso-lymph node space invasion,cervical invasion,number of lymph node metastasis,whether preopera-tive adjuvant therapy was received,postoperative adjuvant therapy,and whether postoperative adjuvant therapy was standardized among the 3 groups(P＜0.05).③Kaplan-Meier survival curve analysis showed that the 5-year OS of the 1-17 group,18-26 group,and ≥ 27 group were 90.23％,92.28％,and 91.61％,respectively,and the 5-year DFS were 85.32％,87.90％,and 87.18％,respectively.The differences between the three groups were sta-tistically significant(P＜0.01).④The results of multivariate Cox regression analysis showed that RLN number in the range of 1-17 was a significant risk factor for the 3-and 5-year OS and DFS,when compared to the 18-26 RLN group(HR＞1,P＜0.05).Conclusions:RLN number may be one of the prognostic indicators of CC.When the number of RLNs is between 18-26,the prognosis of the patient may be better.The number of RLN in the range of 1-17 may increase the risk of recurrence or death in CC patients.

Objective:To investigate the relationship between the number of removed lymph nodes(RLN)and patient prognosis during radical surgery for extensive cervical cancer(CC).Methods:Clinical data of 21416 pa-tients with CC who underwent radical hysterectomy between January 1,2004 to August 31,2018 in the Chinese Cervical Cancer Clinical Study was retrospectively reviewed.Restricted cubic spline(RCS)was used to analyze the dose-response relationship between the number of RLN and prognosis.The patients were divided into three groups according to the RCS and RLN number:1-17 group(8733 cases),18-26 group(8189 cases),and≥ 27 group(4494 cases).Kaplan-Meier survival analysis and Log-Rank tests were used to compare the OS rates and DFS rates between groups at 3 and 5 years.Multivariate Cox proportional hazards model was used to analyze the prognostic mortality risk.Results:① RCS results showed a U-shaped nonlinear dose-response relationship be-tween the number of RLN and prognosis(P＜0.01).When the number of RLN was less than 26,the risk of death decreased as the number of RLN increased,and the risk was lowest when the number of RLN was 26.②There were statistically significant differences(P＜0.05)in age,histological type,tumor diameter,nerve invasion,uterine invasion,vaso-lymph node space invasion,cervical invasion,number of lymph node metastasis,whether preopera-tive adjuvant therapy was received,postoperative adjuvant therapy,and whether postoperative adjuvant therapy was standardized among the 3 groups(P＜0.05).③Kaplan-Meier survival curve analysis showed that the 5-year OS of the 1-17 group,18-26 group,and ≥ 27 group were 90.23％,92.28％,and 91.61％,respectively,and the 5-year DFS were 85.32％,87.90％,and 87.18％,respectively.The differences between the three groups were sta-tistically significant(P＜0.01).④The results of multivariate Cox regression analysis showed that RLN number in the range of 1-17 was a significant risk factor for the 3-and 5-year OS and DFS,when compared to the 18-26 RLN group(HR＞1,P＜0.05).Conclusions:RLN number may be one of the prognostic indicators of CC.When the number of RLNs is between 18-26,the prognosis of the patient may be better.The number of RLN in the range of 1-17 may increase the risk of recurrence or death in CC patients.

Objective:To investigate the relationship between the number of removed lymph nodes(RLN)and patient prognosis during radical surgery for extensive cervical cancer(CC).Methods:Clinical data of 21416 pa-tients with CC who underwent radical hysterectomy between January 1,2004 to August 31,2018 in the Chinese Cervical Cancer Clinical Study was retrospectively reviewed.Restricted cubic spline(RCS)was used to analyze the dose-response relationship between the number of RLN and prognosis.The patients were divided into three groups according to the RCS and RLN number:1-17 group(8733 cases),18-26 group(8189 cases),and≥ 27 group(4494 cases).Kaplan-Meier survival analysis and Log-Rank tests were used to compare the OS rates and DFS rates between groups at 3 and 5 years.Multivariate Cox proportional hazards model was used to analyze the prognostic mortality risk.Results:① RCS results showed a U-shaped nonlinear dose-response relationship be-tween the number of RLN and prognosis(P＜0.01).When the number of RLN was less than 26,the risk of death decreased as the number of RLN increased,and the risk was lowest when the number of RLN was 26.②There were statistically significant differences(P＜0.05)in age,histological type,tumor diameter,nerve invasion,uterine invasion,vaso-lymph node space invasion,cervical invasion,number of lymph node metastasis,whether preopera-tive adjuvant therapy was received,postoperative adjuvant therapy,and whether postoperative adjuvant therapy was standardized among the 3 groups(P＜0.05).③Kaplan-Meier survival curve analysis showed that the 5-year OS of the 1-17 group,18-26 group,and ≥ 27 group were 90.23％,92.28％,and 91.61％,respectively,and the 5-year DFS were 85.32％,87.90％,and 87.18％,respectively.The differences between the three groups were sta-tistically significant(P＜0.01).④The results of multivariate Cox regression analysis showed that RLN number in the range of 1-17 was a significant risk factor for the 3-and 5-year OS and DFS,when compared to the 18-26 RLN group(HR＞1,P＜0.05).Conclusions:RLN number may be one of the prognostic indicators of CC.When the number of RLNs is between 18-26,the prognosis of the patient may be better.The number of RLN in the range of 1-17 may increase the risk of recurrence or death in CC patients.