1
|
Lan YZ, Wu Z, Chen WJ, Fang ZX, Yu XN, Wu HT, Liu J. Small nucleolar RNA and its potential role in the oncogenesis and development of colorectal cancer. World J Gastroenterol 2024; 30:115-127. [PMID: 38312115 PMCID: PMC10835520 DOI: 10.3748/wjg.v30.i2.115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 12/21/2023] [Accepted: 12/28/2023] [Indexed: 01/12/2024] Open
Abstract
Small nucleolar RNAs (snoRNAs) represent a class of non-coding RNAs that play pivotal roles in post-transcriptional RNA processing and modification, thereby contributing significantly to the maintenance of cellular functions related to protein synthesis. SnoRNAs have been discovered to possess the ability to influence cell fate and alter disease progression, holding immense potential in controlling human diseases. It is suggested that the dysregulation of snoRNAs in cancer exhibits differential expression across various cancer types, stages, metastasis, treatment response and/or prognosis in patients. On the other hand, colorectal cancer (CRC), a prevalent malignancy of the digestive system, is characterized by high incidence and mortality rates, ranking as the third most common cancer type. Recent research indicates that snoRNA dysregulation is associated with CRC, as snoRNA expression significantly differs between normal and cancerous conditions. Consequently, assessing snoRNA expression level and function holds promise for the prognosis and diagnosis of CRC. Nevertheless, current comprehension of the potential roles of snoRNAs in CRC remains limited. This review offers a comprehensive survey of the aberrant regulation of snoRNAs in CRC, providing valuable insights into the discovery of novel biomarkers, therapeutic targets, and potential tools for the diagnosis and treatment of CRC and furnishing critical cues for advancing research into CRC and the judicious selection of therapeutic targets.
Collapse
Affiliation(s)
- Yang-Zheng Lan
- The Breast Center, Cancer Hospital of Shantou University Medical College, Shantou 515041, Guangdong Province, China
| | - Zheng Wu
- The Breast Center, Cancer Hospital of Shantou University Medical College, Shantou 515041, Guangdong Province, China
| | - Wen-Jia Chen
- The Breast Center, Cancer Hospital of Shantou University Medical College, Shantou 515041, Guangdong Province, China
| | - Ze-Xuan Fang
- The Breast Center, Cancer Hospital of Shantou University Medical College, Shantou 515041, Guangdong Province, China
| | - Xin-Ning Yu
- Department of General Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, Guangdong Province, China
| | - Hua-Tao Wu
- Department of General Surgery, The First Affiliated Hospital of Shantou University Medical College, Shantou 515041, Guangdong Province, China
| | - Jing Liu
- The Breast Center, Cancer Hospital of Shantou University Medical College, Shantou 515041, Guangdong Province, China
| |
Collapse
|
2
|
Zhong GC, Yu XN, Li J, Chen CY. [Combination of zanubrutinib and rituximab in the treatment of primary cutaneous diffuse large B-cell lymphoma leg type with CD79B and MYD88 mutations: a case report]. Zhonghua Xue Ye Xue Za Zhi 2023; 44:258. [PMID: 37356991 DOI: 10.3760/cma.j.issn.0253-2727.2023.03.015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Affiliation(s)
- G C Zhong
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - X N Yu
- Department of Geriatric Medicine, Qilu Hospital of Shandong University. Jinan 250012, China
| | - J Li
- Department of Geriatric Medicine, Qilu Hospital of Shandong University. Jinan 250012, China
| | - C Y Chen
- Department of Hematology, Qilu Hospital of Shandong University, Jinan 250012, China
| |
Collapse
|
3
|
Fang JH, Dai XS, Yu XN, Luo JY, Liu XN, Zhang MF, Zhu SN. Lesions of the Long Head of the Biceps Tendon Concomitant with Rotator Cuff Tears: Tenotomy or Subpectoral Mini-open Tenodesis? A Comparative Short to Mid-term Follow-up Study. Orthop Surg 2019; 11:857-863. [PMID: 31532924 PMCID: PMC6819190 DOI: 10.1111/os.12536] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 07/28/2019] [Accepted: 08/20/2019] [Indexed: 01/24/2023] Open
Abstract
Objective To compare the clinical and radiological outcomes of patients who underwent rotator cuff repair (RCR) concomitant with long head of the biceps tendon (LHBT) tenotomy or subpectoral mini‐open tenodesis. Methods Prospectively collected data was reviewed on 154 patients, who underwent a LHBT procedure (tenotomy or tenodesis) concomitant with RCR between January 2010 and January 2017. The exclusion criteria were irreparable massive rotator cuff tear, rotator cuff partial tear, subscapular tendon tear, glenohumeral arthritis, and prior shoulder surgery. The two patient groups are as follows: RCR + Tenotomy (Group A) and RCR + Subpectoral mini‐open tenodesis (Group B). The visual analog scale (VAS) for pain, Constant Score scale, American Shoulder and Elbow Surgeons (ASES) scores, and the Disabilities of the Arm, Shoulder and Hand (DASH) scores preoperatively and 1 month, 3 months, 6 months, 1 year postoperatively and the latest out‐patient clinic were compared between the two groups. Results Ninety‐two patients in Group A and 62 patients in Group B completed the follow‐up, with a median follow‐up time of 27 and 42 months respectively. At the final follow‐up, the VAS, Constant, ASES, and DASH scores in Group A were 0.1 ± 0.2, 87.0 ± 12.8, 96.4 ± 4.3 and 6.6 ± 4.8 respectively, and the VAS, Constant, ASES, and DASH scores in Group B were 0.1 ± 0.3, 92.5 ± 3.9, 96.3 ± 3.6 and 2.9 ± 1.3 respectively. Clinical evaluation scales showed satisfactory results in both groups, and there were no statistically significant differences between the two groups at the same follow‐up time. Popeye sign was detected in one case of Group A (1.1%) and in one case of Group B (1.6%, P > 0.05). Conclusion Both tenotomy and subpectoral mini‐open tenodesis are effective for concomitant lesions of the LHBT in patients with reparable rotator cuff tears, and subpectoral mini‐open tenodesis of the LHBT does not provide any significant clinical or functional improvement than isolated tenotomy.
Collapse
Affiliation(s)
- Jing-Hua Fang
- Department of Orthopaedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Orthopaedics Research Institute, Zhejiang University, Hangzhou, China.,Department of Orthopaedic Surgery, Hangzhou Mingzhou Hospital, Hangzhou, China
| | - Xue-Song Dai
- Department of Orthopaedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Orthopaedics Research Institute, Zhejiang University, Hangzhou, China
| | - Xin-Ning Yu
- Department of Orthopaedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Orthopaedics Research Institute, Zhejiang University, Hangzhou, China.,Department of Orthopaedic Surgery, Hangzhou Mingzhou Hospital, Hangzhou, China
| | - Jian-Yang Luo
- Department of Orthopaedic Surgery, Shaoxing Second Hospital, Shaoxing, China
| | - Xiao-Nan Liu
- Department of Orthopaedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Orthopaedics Research Institute, Zhejiang University, Hangzhou, China
| | - Miao-Feng Zhang
- Department of Orthopaedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Orthopaedics Research Institute, Zhejiang University, Hangzhou, China
| | - Su-Nan Zhu
- Department of Orthopaedic Surgery, Second Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou, China.,Orthopaedics Research Institute, Zhejiang University, Hangzhou, China
| |
Collapse
|
4
|
Li T, Yao ZM, Wang L, Tao LY, Yu XN, Sun SL, Hu WN, Du YL, Yan Y. [The role of body fat rate in the evaluation of obstructive sleep apnea]. Zhonghua Er Bi Yan Hou Tou Jing Wai Ke Za Zhi 2019; 54:427-431. [PMID: 31262107 DOI: 10.3760/cma.j.issn.1673-0860.2019.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To investigate the role of body fat ratio in the evaluation of obstructive sleep apnea(OSA). Methods: A retrospective analysis was made on 174 cases (between November, 2017 and April, 2018 showed that) of sleep monitoring in the Department of Otorhinolaryngology in Peking University Third Hospital. The data included the gender, age, body fat rate, body mass index (BMI), neck circumference, and apnea-hypopnea index (AHI). The above data were analyzed by non parametric correlation analysis, receiver operating characterristic (ROC) curve analysis and multiple factor Logistic regression analysis to study the relationship between the gender,age,body fat rate,BMI,neck circumference and other indexes of the patients with AHI. Results: Nonparametric correlation analysis showed that the correlation from strong to weak to AHI among women was BMI (r=0.621, P<0.001),body fat rate (r=0.602, P<0.001), age (r=0.570, P<0.001), neck circumference (r=0.402, P=0.014), respectively. BMI (r=0.599, P<0.001), neck circumference (r=0.493, P<0.001), body fat rate (r=0.318, P<0.001), and age (r=0.256, P=0.003) among men. ROC curve analysis showed that the strong to weak index (area under curve,AUC) of the AHI>15/h among women was the body fat rate (AUC=0.884, P=0.001), BMI(AUC=0.810, P=0.008), neck circumference (AUC=0.759, P=0.027), age (AUC=0.750, P=0.033), and the male was BMI (AUC=0.765,P<0.001), neck circumference (AUC=0.720, P<0.001), age (AUC=0.634, P=0.008), and body fat rate (AUC=0.632, P=0.010), respectively. Multifactor Logistic regression analysis showed that the body fat rate (OR=1.704,95%CI=1.012-2.870) in women was an independent risk factor for AHI greater than 15/h; the age of male (OR=1. 044, 95%CI=1.005-1.085) and BMI (OR=1.285, 95%CI=1.056-1.562) were independent risk factors for AHI greater than 15/h. Conclusion: Body fat rate can be used as a new indicator for predicting the severity of OSA,especially in adult female population. In adult female moderate to severe OSA patients (AHI>15/h), compared with BMI,neck circumference and age,the body fat rate has the greatest correlation with AHI. Compared with BMI,neck circumference and age,the body fat rate has a decisive role in predicting moderate to severe OSA (AHI>15/h).
Collapse
Affiliation(s)
- T Li
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - Z M Yao
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - L Wang
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - L Y Tao
- Epidemiological Studies Center, Peking University Third Hospital, Beijing 100191, China
| | - X N Yu
- School of Information Resource Management, Renmin University of China, Beijing 100872, China
| | - S L Sun
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - W N Hu
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - Y L Du
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| | - Y Yan
- Department of Otorhinolaryngology, Peking University Third Hospital, Beijing 100191, China
| |
Collapse
|
5
|
Chen HJ, Yang ZL, Yang NG, Zhang J, Wang J, Zhang XJ, Han YM, Yu XN. [Prevalence of erectile dysfunction in men with pre-diabetes: An investigation in Lanzhou]. Zhonghua Nan Ke Xue 2017; 23:436-440. [PMID: 29717835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
OBJECTIVE To investigate the prevalence of erectile dysfunction (ED) in men with pre-diabetes. METHODS This study included 500 men with impaired fasting glycaemia (IFG), 500 with impaired glucose tolerance (IGT), and another 500 with normal blood glucose (NBG), all from Lanzhou. We conducted a questionnaire investigation among the subjects using the International Index of Erectile Dysfunction 5 (IIEF-5). RESULTS The prevalence rates of ED in the IFG, IGT, and NBG groups were 14.8%, 29.2%, and 33.2%, respectively. After controlling for age, nationality, occupation, education, income, obesity, and blood pressure, the incidence rate was markedly higher in the IFG and IGT than in the NBG group (29.2% and 33.2% vs 14.8%, P <0.05), but showed no statistically significant difference between the IFG and IGT groups (P >0.05). CONCLUSIONS The prevalence of ED is higher in men with pre-diabetes than in those with normal blood glucose in Lanzhou.
Collapse
Affiliation(s)
- Hong-Jie Chen
- Department of Urology,The First Renmin Hospital of Lanzhou, Lanzhou, Gansu 730050, China
| | - Zhi-Long Yang
- Center of Medical Examination, The First Renmin Hospital of Lanzhou, Lanzhou, Gansu 730050, China
| | - Ning-Gang Yang
- Department of Urology,The First Renmin Hospital of Lanzhou, Lanzhou, Gansu 730050, China
| | - Jun Zhang
- Department of Urology,The First Renmin Hospital of Lanzhou, Lanzhou, Gansu 730050, China
| | - Jun Wang
- Department of Urology,The First Renmin Hospital of Lanzhou, Lanzhou, Gansu 730050, China
| | - Xiang-Jun Zhang
- Department of Urology,The First Renmin Hospital of Lanzhou, Lanzhou, Gansu 730050, China
| | - Yuan-Ming Han
- Department of Urology,The First Renmin Hospital of Lanzhou, Lanzhou, Gansu 730050, China
| | - Xin-Ning Yu
- Department of Urology,The First Renmin Hospital of Lanzhou, Lanzhou, Gansu 730050, China
| |
Collapse
|
6
|
Yu XN, Lau JTF, Mak WWS, Cheng YM, Lv YH, Zhang JX. Risk and protective factors in association with mental health problems among people living with HIV who were former plasma/blood donors in rural China. AIDS Care 2009; 21:645-54. [PMID: 19444674 DOI: 10.1080/09540120802459770] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Abstract
A random sample of 271 people living with HIV (PLWH) who were former plasma/blood donors and a convenience sample of 67 HIV negative villagers were anonymously interviewed. Compared with the non-PLWH, PLWH reported higher prevalence of symptoms of depression (adjusted OR = 2.53, p=0.001), anxiety (adjusted OR = 1.85, p=0.04), and stress (adjusted OR = 1.77, p=0.06). Of the PLWH respondents, 81.7% received Highly Active Antiretroviral Therapy (HAART); 32.1% of whom reported some side effects. Respectively 13.7%, 37.4%, and 38.4% PLWH perceived discrimination from their family members, relatives/friends, and neighbors. Absence of HAART, poor physical function, perceived discrimination from relatives and friends, and low level of resilience were associated with depression (stepwise regression; beta = - 0.28-0.17, R-square = 0.22), anxiety and stress (R-square = 0.32 and 0.16, respectively). The majority of respondents (70.1%) desired group intervention as a means for providing psychological support services. Relevant programs should both remove risk factors (e.g., absence of medical treatment, HIV-related discrimination) and promote protective factors (e.g., resilience). Support group is one of the potentially useful approaches to provide psychological support services.
Collapse
Affiliation(s)
- X N Yu
- Centre for Epidemiology and Biostatistics, School of Public Health, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, PRC
| | | | | | | | | | | |
Collapse
|
7
|
Lau JTF, Wan SP, Yu XN, Cheng F, Zhang Y, Wang N, Zhang L, Zhang J. Changes in condom use behaviours among clients of female sex workers in China. Sex Transm Infect 2009; 85:376-82. [PMID: 19497919 DOI: 10.1136/sti.2008.035162] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
BACKGROUND Clients of female sex workers (CFSWs) are at risk for HIV transmission; relevant surveillance and interventions for this vulnerable group are scarce. The China-UK HIV/AIDS Prevention and Care Project launched an enhanced intervention programme involving peer education, seminars, testing services and social gatherings and so forth, and two behavioural surveillance studies (BSS) targeting CFSWs in Suining, Sichuan. METHODS Two cross-sectional BSS (a baseline survey and an evaluative survey) were conducted in September 2005 and May 2006, respectively. In total, 356 and 372 respondents who patronised some low-end sex services were interviewed by peer interviewers. Another triangulation condom audit exercise was conducted in June 2006. RESULTS Prevalence of respondents using at least one prevention service increased from 50.3% in 2005 to 68.5% in 2006 (AOR = 2.2). Respondents of the evaluative survey compared with their counterparts of the baseline survey had lower prevalence of inconsistent condom users in the last 6 months (44.1% vs 77.0%; AOR = 0.2) and higher prevalence of condom use in the last episode of commercial sex (78.0% vs 41.5%; AOR = 4.9). The triangulation audit showed that condoms were used by 73.8% of CFSWs. The multivariate analysis shows that year of study (OR = 0.3), self-reported sexually transmitted disease symptoms (OR = 2.9), use of face-to-face counselling services (OR = 0.5) and so forth were significantly associated with inconsistent condom use during commercial sex in the last 6 months. CONCLUSIONS Condom use and service use behaviours changed in the study population over a time period when an enhanced intervention programme was implemented. Such effective programmes may be applied to other locations in China.
Collapse
Affiliation(s)
- J T F Lau
- Center for Epidemiology and Biostatistics, School of Public Health, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong.
| | | | | | | | | | | | | | | |
Collapse
|
8
|
Abstract
Dehydroepiandrosterone (DHEA) and its sulfate derivatives are known to affect host immune function; however if such hormones influence the development of atopic dermatitis has not yet been clarified. In this study, we examined the effects of DHEA on the allergic process using NC/Nga mouse, a model animal of human atopic dermatitis. The administration of DHEA profoundly suppressed the spontaneous elevation of both serum IgE and interleukin-6 levels in NC/Nga mice during the observation period. These results indicate that DHEA promotes a shift in Thl/Th2 balance toward Th1-dominant immunity, and thus may be one of the effective alternatives in treating atopic dermatitis.
Collapse
Affiliation(s)
- N Sudo
- Department of Psychosomatic Medicine, Graduate School of Medical Sciences, Kyushu University, 3-1-1 Maidashi, Higashi-Ku, 812-8582, Fukuoka, Japan.
| | | | | |
Collapse
|
9
|
Abstract
Several recent reports indicate that exercise elevates the plasma interleukin 6 levels; however, the precise regulation of such an elevation still remains to be clarified. In this study, in order to clarify the requirements of central and peripheral catecholaminergic system for this exercise-induced interleukin 6 elevation, rats were either intraperitoneally or intracerebroventricularly injected with 6-hydroxydopamine which depletes the catecholamine in the central or peripheral tissues. As a result, our exercise protocol elevated the plasma interleukin 6, ACTH, and corticosterone levels in response to exercise. All such exercise-induced increases in the interleukin 6, ACTH, and corticosterone levels were significantly inhibited by pretreatment with an intracerebroventricular injection of 6-hydroxydopamine. In the intraperitoneal 6-hydroxydopamine-treated animals, the exercise-induced interleukin 6 elevation was significantly suppressed compared with the vehicle-treated animals, although no significant difference was found in either the ACTH level or the corticosterone level between both groups of animals. These results thus suggest that central and peripheral catecholamines are involved in the regulation of the exercise-induced interleukin 6 elevation.
Collapse
Affiliation(s)
- X N Yu
- Department of Psychosomatic Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | |
Collapse
|
10
|
Sudo N, Oyama N, Yu XN, Kubo C. Restraint stress-induced elevation of endogenous glucocorticoids decreases Peyer's patch cell numbers via mechanisms that are either dependent or independent on apoptotic cell death. Neuroimmunomodulation 2001; 9:333-9. [PMID: 12045361 DOI: 10.1159/000059391] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
In this study, we investigated whether restraint stress induces either apoptotic cell death or lymphocyte migration in Peyer's patches. Exposure to stress induced a striking decrease in the number of CD3+CD4+, CD3+CD8+ and B220+ cells. Such decreases were accompanied by the enhanced induction of apoptosis in Peyer's patches. The apoptosis of Peyer's patch cells was completely reversed by pretreatment with either high or low doses of RU-486, a glucocorticoid receptor antagonist. In contrast, the stress-induced lymphopenia was little affected by administration of low doses of RU-486, although such lymphopenia was perfectly inhibited by treatment with high doses of RU-486. Taken together, these results suggest that the stress-induced lymphopenia in Peyer's patches is partly due to apoptotic cell death, although other systems such as lymphocyte migration, may contribute to such a reduction in the number of Peyer's patch cells.
Collapse
MESH Headings
- Animals
- Antigens, Surface/drug effects
- Antigens, Surface/immunology
- Apoptosis/drug effects
- Apoptosis/immunology
- Cell Count
- Chemotaxis, Leukocyte/drug effects
- Chemotaxis, Leukocyte/immunology
- Dose-Response Relationship, Drug
- Down-Regulation/drug effects
- Down-Regulation/immunology
- Glucocorticoids/immunology
- Glucocorticoids/metabolism
- Hormone Antagonists/pharmacology
- Lymphocytes/cytology
- Lymphocytes/drug effects
- Lymphocytes/immunology
- Male
- Mice
- Mice, Inbred BALB C
- Mifepristone/pharmacology
- Peyer's Patches/cytology
- Peyer's Patches/drug effects
- Peyer's Patches/immunology
- Receptors, Glucocorticoid/antagonists & inhibitors
- Receptors, Glucocorticoid/immunology
- Restraint, Physical
- Stress, Physiological/immunology
- Stress, Physiological/metabolism
- Up-Regulation/drug effects
- Up-Regulation/immunology
- fas Receptor/drug effects
- fas Receptor/immunology
- fas Receptor/metabolism
Collapse
Affiliation(s)
- N Sudo
- Health Care Administration and Management, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.
| | | | | | | |
Collapse
|
11
|
Sudo N, Aiba Y, Takaki A, Tanaka K, Yu XN, Oyama N, Koga Y, Kubo C. Dietary nucleic acids promote a shift in Th1/Th2 balance toward Th1-dominant immunity. Clin Exp Allergy 2000; 30:979-87. [PMID: 10848920 DOI: 10.1046/j.1365-2222.2000.00811.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
BACKGROUND Dietary sources of nucleic acids and their relative components are known to affect host immune function; however, it has not yet been clarified whether such dietary nucleic acids influence the pathogenesis of allergic reaction. OBJECTIVE The purpose of this study is to elucidate the effect of dietary nucleic acids on Th1/Th2 balance. METHODS Both human flora-associated and specific pathogen-free BALB/c mice were maintained on either nucleic acid-free, or -supplemented diets. The effects of nucleic acids on both in vivo antibody levels and in vitro splenocyte cytokine production were compared using these mice. RESULTS Supplementation of nucleic acids caused a reduction in the serum antibody levels of total IgM, IgG, IgG1, and IgE in the human flora-associated mice without affecting the composition of intestinal flora. In contrast, there was no significant difference of the serum IgG2a levels between nucleic acid-free and -supplemented mice. Such a phenomenon as that, the supplementation of dietary nucleic acids reduces the serum IgE or IgG1 levels, but not the IgG2a level, was also seen in the specific pathogen free mice. Moreover, when the mice were systematically challenged with ovalbumin, the supplementation of nucleic acids also suppressed the serum ovalbumin-specific IgE and IgG1 antibody levels as well as in vitro IL-4 and IL-10 secretion, while enhancing both the serum ovalbumin-specific IgG2a antibody levels and in vitro IFN gamma secretion. CONCLUSION These results suggested that dietary nucleic acids may play an important role in promoting a shift in Th1/Th2 balance toward Th1-dominant immunity.
Collapse
Affiliation(s)
- N Sudo
- Department of Psychosomatic Medicine, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | | | | | |
Collapse
|
12
|
Fukui Y, Sudo N, Yu XN, Nukina H, Sogawa H, Kubo C. The restraint stress-induced reduction in lymphocyte cell number in lymphoid organs correlates with the suppression of in vivo antibody production. J Neuroimmunol 1997; 79:211-7. [PMID: 9394794 DOI: 10.1016/s0165-5728(97)00126-4] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
In this study, we examined the effects of restraint stress on some immune parameters such as the in vivo antibody levels, cytokine production, and lymphocyte cell number in the spleen or mesenteric lymph node (MLN). BALB/c mice were thus injected intraperitoneally 2-times with OVA absorbed into alum on days 0 and 21. Before the first injection, the animals were either restrained for 12 h (stress group) or returned to their home cage (control group). Exposure to stress resulted in a reduction in the serum levels of anti-OVA IgE, IgG1, and IgG2a. In addition, stress also caused a decrease in the IL-4 and IFN-gamma levels in the spleen or mesenteric lymph node cell culture supernatants. Furthermore, exposure to stress resulted in a decrease in the splenic and mesenteric lymphocyte cell number when examined immediately after the cessation of stress. This decrease persisted for at least 12 h after the termination of stress and thereafter disappeared 24 h after stress. The stress-induced reductions in antibody and cytokine production occurred only when antigen was given either immediately or 6 h after stress, but not when antigen was given 24 h post stress. These results thus suggest that the restraint stress-induced change in lymphocyte cell number in the spleen or MLN closely correlates with the altered antibody and cytokine levels.
Collapse
Affiliation(s)
- Y Fukui
- Department of Psychosomatic Medicine, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | | | | | | | | | | |
Collapse
|
13
|
Abstract
In this study, the effect of restraint stress on alterations in the immune cell distribution was examined in bone marrow, liver, thymus, and spleen. In bone marrow, stress induced a striking increase in both the proportion and number of CD3+CD4+, CD3+CD8+, B220brightIgM+, CD3-IL-2R beta + and CD3intIL-2R beta + cells. Such an increase was partially reversed by pretreatment with RU-486, a steroid receptor antagonist, while it was profoundly enhanced by either sympathectomy with 6-hydroxydopamine hydrobromide or by a beta-adrenergic blockade with propranolol, a beta-adrenergic receptor antagonist; this suggests that corticosteroids and catecholamines may act in opposition with regard to such an immune-cell accumulation in bone marrow. In the liver, stress decreased the proportions of CD3intIL-2R beta +, CD3-IL-2R beta +, and B220brightIgM+ cells, while it increased the proportion of CD3brightIL-2R beta-cells, thus demonstrating that different subpopulations were differentially affected. In the thymus and spleen, stress only slightly affected the proportions of lymphocyte subpopulations, although both tissues showed a drastic reduction in the number of lymphocytes. Taken together, these results suggest that restraint stress induces tissue-specific changes in the immune-cell distribution.
Collapse
Affiliation(s)
- N Sudo
- Department of Psychosomatic Medicine, Faculty of Medicine, Kyushu University, Fukuoka, Japan
| | | | | | | |
Collapse
|