1.A clinical study of 90 patients with pancreatic carcinoma
Deling ZOU ; Weibo LIU ; Canyang WANG ; Yuehui LI
Clinical Medicine of China 2010;26(11):1196-1197
Objective To improve the early diagnosis and prognosis factor of pancreatic carcinoma by summarizing and analyzing the clinical data. Methods The clinical data of 90 patients with pancreatic carcinoma of our hospital from 1989 to 2005 were analyzed retrospectively. Results The symptoms of pancreatic carcinoma were very complicated,the most common manifestations were bellyache,jaundice and weight loss. Main physical signs in these patients included abdominal tenderness,abdominal mass,hepatomegalia,gallbladder enlargement. Jaundice was the outstanding manifestation of pancreatic head cancer. Among all patients,16 cases accepted sugical resection(17.8%),and the 1-year,3-year,5-year survival rate were 22. 2%,11.1% and 2. 2% respectively. Our data showed that the most important prognostic factors which influenced life span were the surgical procedures,tumor size and location,histological differentiation,TNM stage. Conclusions Clinical manifestations of pancreatic carcinoma are related to TNM stage,tumor size and location,histology type,complication disease. Clinical symptoms only provide clue for diagnosis of pancreatic carcinoma. Laboratory and imaging examination will provide objective evidence for further diagnosis and prognosis in pancreatic carcinoma.
2.Mechanism of Moxibustion Regulation on Cellular Apoptosis in Rat's Precancerous Lesion of Primary Hepatocellular Carcinoma
Ziyi GUO ; Haibo RONG ; Canyang DIAO ; Youguang AO ; Yu WANG ; Yunkuan YANG ; Zhongchun ZHU
Journal of Acupuncture and Tuina Science 2006;4(6):328-332,封二
To investigate the mechanism of moxibustion in regulating cellular apoptosis in rat's precancerous lesion of primary hepatocellular carcinoma (HCC). Methods:Seventy-four rats were randomly allocated to normal group,model group and moxibustion group,and the diethylic nitrosamine (DEN) was used to establish HCC model. Moxibustion with moxa cone which is as big as a grain of wheat was performed on acupoint Zusanli (ST 36),3 cones for each acupoint and 0.5 mg for each cone,the treatment was given once a day,totally 16 weeks. Then the changes in the body weight,liver weight and thymus weight,a morphological change in the liver tissue and changes in γ-GT and GST were observed;Immunohistochemical staining method was adopted to observe the tendency of changes in relevant apoptosis genes such as C-myc,N-ras and mutant type P53,and the influence of moxibustion on cell cycle modulation genes such as cyclinD1,CDK4 and p16. Results:Moxibustion could reduce the activities of γ-GT and GST in the blood,obviously decrease the protein expression of relevant apoptosis genes such as C-myc,N-ras and mutant type P53 and markedly inhibit the over-expression of relevant cell cycle modulation genes such as cyclinD1 and CDK4 and the mutation of cell cycle modulation gene p16. Conclusion:Moxibustion might play a certain role in relieving HCC precancerous lesion and its action mechanism might be related to the regulation on partial apoptosis genes.
3.The study of early screening for colorectal cancer in Jinjiang
Canyang WANG ; Weibo LIU ; Deling ZOU ; Qunying XU ; Yuming LIU ; Fengyu SUN ; Jinle LIN
Clinical Medicine of China 2012;28(2):155-157
Objective To discover,diagnose and treat colorectal cancer in the early period and further improve the survival rate,reduce morbidity and mortality of the colorectal cancer by early screening for colorectal cancer in Jinjiang.Methods According to “The Guide of Cancer Screening and Early Diagnosis and Treatment in China by the Experts Group of Ministry of Health”,the case history was collected while the stool occult blood and FOBT were detected to discover high risk crowd who then inspected by electron enterscope.Results The screening was practiced in Xibin,Zimao and Neikeng town respectively.The crowd of 40-74 years old was 10 116 and 2631 of them accepted screening(acclimation rate,26%).Two hundred and fifty-seven high-risk people were discovered(9.8% of 2631)and 86 of them(acclimation rate,33%,86/257)were inspected by electron enterscope.Twenty-two cases were detected with colorectal affection(detection rate,8.6%,22/257),20 cases were diagnosed as colorectal adenoma and 2 cases were diagnosed as adenocarcinoma by pathological section.All of them accepted therapy.Conclusion Carrying out early screening for colorectal cancer is important.It can reduce morbidity and mortality of the colorectal cancer and then improve the cure rate and prolong survival in patients with colorectal cancer.
4.Analgesic and anti-inflammatory effects of galangin: a potential pathway to inhibit transient receptor potential vanilloid 1 receptor activation
Kaiwen LIN ; Datian FU ; Zhongtao WANG ; Xueer ZHANG ; Canyang ZHU
The Korean Journal of Pain 2024;37(2):151-163
Background:
Galangin, commonly employed in traditional Chinese medicine for its diverse medicinal properties, exhibits potential in treating inflammatory pain. Nevertheless, its mechanism of action remains unclear.
Methods:
Mice were randomly divided into 4 groups for 7 days: a normal control group, a galangin-treated (25 and 50 mg/kg), and a positive control celecoxib (20 mg/kg). Analgesic and anti-inflammatory effects were evaluated using a hot plate test, acetic acid-induced writhing test, acetic acid-induced vascular permeability test, formalininduced paw licking test, and carrageenan-induced paw swelling test. The interplay between galangin, transient receptor potential vanilloid 1 (TRPV1), NF-κB, COX-2, and TNF-α proteins was evaluated via molecular docking. COX- 2, PGE2, IL-1β, IL-6, and TNF-α levels in serum were measured using ELISA after capsaicin administration (200 nmol/L). TRPV1 expression in the dorsal root ganglion was analyzed by Western blot. The quantities of substance P (SP) and calcitonin gene-related peptide (CGRP) were assessed using qPCR.
Results:
Galangin reduced hot plate-induced licking latency, acetic acid-induced contortions, carrageenantriggered foot inflammation, and capillary permeability in mice. It exhibited favorable affinity towards TRPV1, NF- κB, COX-2, and TNF-α, resulting in decreased levels of COX-2, PGE2, IL-1β, IL-6, and TNF-α in serum following capsaicin stimulation. Galangin effectively suppressed the upregulation of TRPV1 protein and associated receptor neuropeptides CGRP and SP mRNA, while concurrently inhibiting the expression of NF-κB, TNF-α, COX-2, and PGE2 mRNA.
Conclusions
Galangin exerts its anti-inflammatory pain effects by inhibiting TRPV1 activation and regulating COX-2, NF-κB/TNF-α expression, providing evidence for the use of galangin in the management of inflammatory pain.
5.Analgesic and anti-inflammatory effects of galangin: a potential pathway to inhibit transient receptor potential vanilloid 1 receptor activation
Kaiwen LIN ; Datian FU ; Zhongtao WANG ; Xueer ZHANG ; Canyang ZHU
The Korean Journal of Pain 2024;37(2):151-163
Background:
Galangin, commonly employed in traditional Chinese medicine for its diverse medicinal properties, exhibits potential in treating inflammatory pain. Nevertheless, its mechanism of action remains unclear.
Methods:
Mice were randomly divided into 4 groups for 7 days: a normal control group, a galangin-treated (25 and 50 mg/kg), and a positive control celecoxib (20 mg/kg). Analgesic and anti-inflammatory effects were evaluated using a hot plate test, acetic acid-induced writhing test, acetic acid-induced vascular permeability test, formalininduced paw licking test, and carrageenan-induced paw swelling test. The interplay between galangin, transient receptor potential vanilloid 1 (TRPV1), NF-κB, COX-2, and TNF-α proteins was evaluated via molecular docking. COX- 2, PGE2, IL-1β, IL-6, and TNF-α levels in serum were measured using ELISA after capsaicin administration (200 nmol/L). TRPV1 expression in the dorsal root ganglion was analyzed by Western blot. The quantities of substance P (SP) and calcitonin gene-related peptide (CGRP) were assessed using qPCR.
Results:
Galangin reduced hot plate-induced licking latency, acetic acid-induced contortions, carrageenantriggered foot inflammation, and capillary permeability in mice. It exhibited favorable affinity towards TRPV1, NF- κB, COX-2, and TNF-α, resulting in decreased levels of COX-2, PGE2, IL-1β, IL-6, and TNF-α in serum following capsaicin stimulation. Galangin effectively suppressed the upregulation of TRPV1 protein and associated receptor neuropeptides CGRP and SP mRNA, while concurrently inhibiting the expression of NF-κB, TNF-α, COX-2, and PGE2 mRNA.
Conclusions
Galangin exerts its anti-inflammatory pain effects by inhibiting TRPV1 activation and regulating COX-2, NF-κB/TNF-α expression, providing evidence for the use of galangin in the management of inflammatory pain.
6.Analgesic and anti-inflammatory effects of galangin: a potential pathway to inhibit transient receptor potential vanilloid 1 receptor activation
Kaiwen LIN ; Datian FU ; Zhongtao WANG ; Xueer ZHANG ; Canyang ZHU
The Korean Journal of Pain 2024;37(2):151-163
Background:
Galangin, commonly employed in traditional Chinese medicine for its diverse medicinal properties, exhibits potential in treating inflammatory pain. Nevertheless, its mechanism of action remains unclear.
Methods:
Mice were randomly divided into 4 groups for 7 days: a normal control group, a galangin-treated (25 and 50 mg/kg), and a positive control celecoxib (20 mg/kg). Analgesic and anti-inflammatory effects were evaluated using a hot plate test, acetic acid-induced writhing test, acetic acid-induced vascular permeability test, formalininduced paw licking test, and carrageenan-induced paw swelling test. The interplay between galangin, transient receptor potential vanilloid 1 (TRPV1), NF-κB, COX-2, and TNF-α proteins was evaluated via molecular docking. COX- 2, PGE2, IL-1β, IL-6, and TNF-α levels in serum were measured using ELISA after capsaicin administration (200 nmol/L). TRPV1 expression in the dorsal root ganglion was analyzed by Western blot. The quantities of substance P (SP) and calcitonin gene-related peptide (CGRP) were assessed using qPCR.
Results:
Galangin reduced hot plate-induced licking latency, acetic acid-induced contortions, carrageenantriggered foot inflammation, and capillary permeability in mice. It exhibited favorable affinity towards TRPV1, NF- κB, COX-2, and TNF-α, resulting in decreased levels of COX-2, PGE2, IL-1β, IL-6, and TNF-α in serum following capsaicin stimulation. Galangin effectively suppressed the upregulation of TRPV1 protein and associated receptor neuropeptides CGRP and SP mRNA, while concurrently inhibiting the expression of NF-κB, TNF-α, COX-2, and PGE2 mRNA.
Conclusions
Galangin exerts its anti-inflammatory pain effects by inhibiting TRPV1 activation and regulating COX-2, NF-κB/TNF-α expression, providing evidence for the use of galangin in the management of inflammatory pain.
7.Rapid detection of mild cognitive impairment using natural language processing
Min PENG ; Yaming ZHANG ; Yongmei FAN ; Miaoyuan ZHANG ; Masashi ISHIMARU ; Canyang LI ; Lili JIAO ; Rumi WANG
Chinese Journal of Physical Medicine and Rehabilitation 2023;45(7):592-597
Objective:To automatically and rapidly detect mild cognitive impairment (MCI) in an objective manner using natural language processing (NLP).Methods:A total of 215 participants (half female) aged 50 to 80 were recruited for the study′s normal cognition and MCI groups. Speech tasks and the mini mental state examination (MMSE-2) were used to collect audio data and quantify cognitive functioning. Altogether 162 acoustic features were extracted including the speaking speed, syllable number, syllable duration, number of pauses, duration of pauses, the standard deviation of formant frequency and sound pressure variation. They were compared between the two groups and genders. Multiple regression analysis was used to formulate a model predicting MCI. The sensitivity, specificity and accuracy of its predictions were used to evaluate its predictive power.Results:There were significant differences between the two groups in 50 acoustic features including their pronunciation rhythm and pronunciation accuracy. Univariate correlation analysis revealed that the pronunciation rhythm was significantly associated with cognitive functioning. The sensitivity, specificity and accuracy of the model were 0.54, 0.80 and 0.69 for males and 0.00, 0.86 and 0.63 for females.Conclusion:MCI greatly affects pronunciation rhythm. Acoustic analysis based on NLP can detect MCI rapidly and objectively.
8.Inhibition of temperature-sensitive TRPV3 channel by two natural isochlorogenic acid isomers for alleviation of dermatitis and chronic pruritus.
Hang QI ; Yuntao SHI ; Han WU ; Canyang NIU ; Xiaoying SUN ; KeWei WANG
Acta Pharmaceutica Sinica B 2022;12(2):723-734
Genetic gain-of-function mutations of warm temperature-sensitive transient receptor potential vanilloid 3 (TRPV3) channel cause Olmsted syndrome characterized by severe itching and keratoderma, indicating that pharmacological inhibition of TRPV3 may hold promise for therapy of chronic pruritus and skin diseases. However, currently available TRPV3 tool inhibitors are either nonselective or less potent, thus impeding the validation of TRPV3 as therapeutic target. Using whole-cell patch-clamp and single-channel recordings, we report the identification of two natural dicaffeoylquinic acid isomers isochlorogenic acid A (IAA) and isochlorogenic acid B (IAB) that selectively inhibit TRPV3 currents with IC50 values of 2.7 ± 1.3 and 0.9 ± 0.3 μmol/L, respectively, and reduce the channel open probability to 3.7 ± 1.2% and 3.2 ± 1.1% from 26.9 ± 5.5%, respectively. In vivo evaluation confirms that both IAA and IAB significantly reverse the ear swelling of dermatitis and chronic pruritus. Furthermore, the isomer IAB is able to rescue the keratinocyte death induced by TRPV3 agonist carvacrol. Molecular docking combined with site-directed mutations reveals two residues T636 and F666 critical for the binding of the two isomers. Taken together, our identification of isochlorogenic acids A and B that act as specific TRPV3 channel inhibitors and gating modifiers not only provides an essential pharmacological tool for further investigation of the channel pharmacology and pathology, but also holds developmental potential for treatment of dermatitis and chronic pruritus.