1
|
Qi SS, Shao ML, Sun Z, Chen SM, Hu YJ, Li XS, Chen DJ, Zheng HX, Yue TL. Chondroitin Sulfate Alleviates Diabetic Osteoporosis and Repairs Bone Microstructure via Anti-Oxidation, Anti-Inflammation, and Regulating Bone Metabolism. Front Endocrinol (Lausanne) 2021; 12:759843. [PMID: 34777254 PMCID: PMC8579055 DOI: 10.3389/fendo.2021.759843] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 09/29/2021] [Indexed: 12/24/2022] Open
Abstract
Diabetic osteoporosis (DOP) belongs to secondary osteoporosis caused by diabetes; it has the characteristics of high morbidity and high disability. In the present study, we constructed a type 1 diabetic rat model and administered chondroitin sulfate (200 mg/kg) for 10 weeks to observe the preventive effect of chondroitin sulfate on the bone loss of diabetic rats. The results showed that chondroitin sulfate can reduce blood glucose and relieve symptoms of diabetic rats; in addition, it can significantly increase the bone mineral density, improve bone microstructure, and reduce bone marrow adipocyte number in diabetic rats; after 10 weeks of chondroitin sulfate administration, the SOD activity level was upregulated, as well as CAT levels, indicating that chondroitin sulfate can alleviate oxidative stress in diabetic rats. Chondroitin sulfate was also found to reduce the level of serum inflammatory cytokines (TNF-α, IL-1, IL-6, and MCP-1) and alleviate the inflammation in diabetic rats; bone metabolism marker detection results showed that chondroitin sulfate can reduce bone turnover in diabetic rats (decreased RANKL, CTX-1, ALP, and TRACP 5b levels were observed after 10 weeks of chondroitin sulfate administration). At the same time, the bone OPG and RUNX 2 expression levels were higher after chondroitin sulfate treatment, the bone RANKL expression was lowered, and the OPG/RANKL ratio was upregulated. All of the above indicated that chondroitin sulfate could prevent STZ-induced DOP and repair bone microstructure; the main mechanism was through anti-oxidation, anti-inflammatory, and regulating bone metabolism. Chondroitin sulfate could be used to develop anti-DOP functional foods and diet interventions for diabetes.
Collapse
Affiliation(s)
- Shan Shan Qi
- College of Food Science and Engineering, Northwest Agriculture and Forestry (A&F) University, Yangling, China
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment, Hanzhong, China
| | - Meng Li Shao
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment, Hanzhong, China
| | - Ze Sun
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, China
- QinLing-Bashan Mountains Bioresources Comprehensive Development C.I.C., Hanzhong, China
| | - Si Min Chen
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, China
| | - Ying Jun Hu
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, China
| | - Xin Sheng Li
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, China
- Shaanxi Key Laboratory of Resource Biology, Hanzhong, China
| | - De Jing Chen
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment, Hanzhong, China
- *Correspondence: Tian Li Yue, ; Hong Xing Zheng, ; De Jing Chen,
| | - Hong Xing Zheng
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, China
- Qinba State Key Laboratory of Biological Resources and Ecological Environment, Hanzhong, China
- Shaanxi Key Laboratory of Resource Biology, Hanzhong, China
- *Correspondence: Tian Li Yue, ; Hong Xing Zheng, ; De Jing Chen,
| | - Tian Li Yue
- College of Food Science and Engineering, Northwest Agriculture and Forestry (A&F) University, Yangling, China
- College of Food Science and Technology, Northwest University, Xi’an, China
- *Correspondence: Tian Li Yue, ; Hong Xing Zheng, ; De Jing Chen,
| |
Collapse
|
2
|
Qi SS, He J, Dong LC, Yuan LP, Wu JL, Zu YX, Zheng HX. Cyanidin-3-glucoside from black rice prevents renal dysfunction and renal fibrosis in streptozotocin-diabetic rats. J Funct Foods 2020. [DOI: 10.1016/j.jff.2020.104062] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
|
3
|
Zheng HX, Qi SS, He J, Hu CY, Han H, Jiang H, Li XS. Cyanidin-3-glucoside from Black Rice Ameliorates Diabetic Nephropathy via Reducing Blood Glucose, Suppressing Oxidative Stress and Inflammation, and Regulating Transforming Growth Factor β1/Smad Expression. J Agric Food Chem 2020; 68:4399-4410. [PMID: 32192334 DOI: 10.1021/acs.jafc.0c00680] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Diabetic nephropathy (DN) is one of the serious complications in diabetes. Cyanidin-3-glucoside (C3G) from black rice was reported to have hypoglycemic effects and an anti-osteoporosis effect in diabetic rats. Whether it has preventive effects on DN has not been reported. In this study, we established a rat model of DN, and C3G at two doses (10 and 20 mg kg-1 day-1) were administered to see its anti-DN effect. A total of 8 weeks of C3G supplementation decreased blood glucose and serum insulin, improved the renal function, and relieved renal glomerular sclerosis and interstitial fibrosis of DN rats. Also, the kidneys of DN rats had improved the oxidative defense system. Pro-inflammatory mediators were markedly reduced in serum and kidneys of the C3G-treated groups. Transforming growth factor β1 (TGF-β1), phosphor-Smad2, and phosphor-Smad3 protein expression levels were significantly decreased in the kidney of the C3G-treated group, whereas the Smad7 expression level was upregulated by C3G. Our results indicate that C3G can ameliorate DN via antioxidative stress and anti-inflammation and regulate the TGF-β1/Smad2/3 pathway. Our results suggest that C3G from black rice might be used as a renal-protective nutrient in DN.
Collapse
Affiliation(s)
- Hong Xing Zheng
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, People's Republic of China
| | - Shan Shan Qi
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, People's Republic of China
- Shaanxi Black Organic Food Engineering Center, Hanzhong, Shaanxi 723000, People's Republic of China
| | - Jia He
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, People's Republic of China
| | - Ching Yuan Hu
- Department of Human Nutrition, Food and Animal Sciences, College of Tropical Agriculture and Human Resources, University of Hawaii at Manoa, 1955 East-West Road, AgSci. 415J, Honolulu, Hawaii 96822, United States
| | - Hao Han
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, People's Republic of China
| | - Hai Jiang
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, People's Republic of China
| | - Xin Shen Li
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, People's Republic of China
| |
Collapse
|
4
|
Qi SS, Zheng HX, Jiang H, Yuan LP, Dong LC. Protective Effects of Chromium Picolinate Against Diabetic-Induced Renal Dysfunction and Renal Fibrosis in Streptozotocin-Induced Diabetic Rats. Biomolecules 2020; 10:biom10030398. [PMID: 32143429 PMCID: PMC7175215 DOI: 10.3390/biom10030398] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Revised: 01/27/2020] [Accepted: 01/29/2020] [Indexed: 12/14/2022] Open
Abstract
Diabetic nephropathy (DN) is one of the most important complications of diabetes, and the leading cause of end-stage renal disease (ESRD). While Chromium picolinate (CrPic) supplementation has been found to be effective in treating diabetes, its effects on diabetic-induced nephropathy have not been studied. Therefore, in this study, CrPic (1 mg kg−1 d−1) was administered to a DN rat model by oral gavage for eight weeks to investigate its effects. The results show that CrPic supplementation caused a decrease in levels of blood glucose, serum insulin, blood urea nitrogen (BUN), serum creatinine, and urinary albumin in DN rats. It also reversed renal pathological changes, including renal glomerular sclerosis and interstitial fibrosis. In addition, the oxidative defense system in the kidneys of DN rats was found to be improved; the biological activities of superoxide dismutase (SOD), catalase (CAT), and glutathione peroxidase (GPX) increased; and the content of malondialdehyde (MDA) lowered. Immunohistochemical results reveal that the expression levels of renal transforming growth factor-β1 (TGF-β1), Smad 2, and Smad 3 decreased significantly in the kidneys of rats in the CrPic-treated group. CrPic administration was thus found to ameliorate diabetic nephropathy in SD rats via an antioxidative stress mechanism, as well the ability to inhibit TGF-β1/Smad2/3 expression. This study suggests that CrPic could be a potential renal-protective nutrient against diabetic nephropathy.
Collapse
Affiliation(s)
- Shan Shan Qi
- Vitamin D Research Institute, College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, China
| | - Hong Xing Zheng
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, China
| | - Hai Jiang
- Vitamin D Research Institute, College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, China
| | - Li Ping Yuan
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, China
| | - Le Chen Dong
- College of Biological Science and Engineering, Shaanxi University of Technology, Hanzhong, Shaanxi 723000, China
| |
Collapse
|
5
|
Bai XP, Zheng HX, Fang R, Wang TR, Hou XL, Li Y, Chen XB, Tian WM. Fabrication of engineered heart tissue grafts from alginate/collagen barium composite microbeads. Biomed Mater 2011; 6:045002. [DOI: 10.1088/1748-6041/6/4/045002] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
6
|
Zheng HX, Huang Y, Frassetto LA, Benet LZ. Elucidating rifampin's inducing and inhibiting effects on glyburide pharmacokinetics and blood glucose in healthy volunteers: unmasking the differential effects of enzyme induction and transporter inhibition for a drug and its primary metabolite. Clin Pharmacol Ther 2008; 85:78-85. [PMID: 18843263 DOI: 10.1038/clpt.2008.186] [Citation(s) in RCA: 90] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The effects of single doses of intravenous (IV) ciprofloxacin and rifampin and of multiple doses of rifampin on glyburide exposure and blood glucose levels were investigated in nine healthy volunteers. A single IV dose of rifampin significantly increased the area under the concentration-time curve (AUC) of glyburide and its metabolite. Blood glucose levels were significantly lower than those observed after dosing with glyburide alone. Multiple doses of rifampin induced an increase in liver enzyme levels, leading to a marked decrease in glyburide exposure and blood glucose levels. When IV rifampin was administered after multiple doses of rifampin, the inhibition of hepatic uptake transporters masked the induction effect; however, the relative changes in AUC for glyburide and its hydroxyl metabolite were similar to those seen under noninduced conditions. The studies reported here demonstrate how measurements of the levels of both the parent drug and its primary metabolite are useful in unmasking simultaneous drug-drug induction and inhibition effects and in characterizing enzymatic vs. transporter mechanisms.
Collapse
Affiliation(s)
- H X Zheng
- Department of Biopharmaceutical Sciences, University of California, San Francisco, San Francisco, California, USA
| | | | | | | |
Collapse
|
7
|
Zheng HX, Zeevi A, McCurry K, Schuetz E, Webber S, Ristich J, Zhang J, Iacono A, Dauber J, McDade K, Zaldonis D, Lamba J, Burckart GJ. The impact of pharmacogenomic factors on acute persistent rejection in adult lung transplant patients. Transpl Immunol 2005; 14:37-42. [PMID: 15814280 DOI: 10.1016/j.trim.2004.11.001] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2004] [Accepted: 11/09/2004] [Indexed: 11/17/2022]
Abstract
Persistent rejection in the face of treatment and multiple episodes of rejection are associated with the development of chronic rejection and graft loss in solid organ transplantation. The factors that create an environment for rejection that persists in the face of treatment are as yet not understood. The objective of this study was to evaluate the risk factors, including human multidrug resistance gene (MDR1), cytochrome P4503A5 (CYP3A5) and cytokine gene polymorphisms, associated with acute persistent rejection (APR) in lung transplant patients. One hundred and twenty-five adult lung transplant patients were studied. MDR1 G2677T, C3435T and CYP3A5 polymorphisms were assessed by direct sequencing of the polymorphic region in patient DNA. Cytokine genotyping for five cytokines was performed using the polymerase chain reaction-sequence specific primers (PCR-SSP) technique. Multivariate regression analysis was used to identify the predictors of acute persistent rejection. The dependent variable was the presence or absence of acute persistent rejection based on lung biopsies during the first postoperative year. The independent variables were MDR1 G2677T and C3435T, CYP4503A5 and cytokine polymorphisms, survival status, age, gender, survival days and HLA mismatches. The MDR1 C3435T polymorphism and age were independently associated with acute persistent rejection (p = 0.025, odds ratio = 0.29, 95% CI 0.1-0.86 and p = 0.016, odds ratio = 0.94, 95% CI 0.89-0.98, respectively). For the MDR1 C3435T polymorphism, 72% of patients with the C allele had acute persistent rejection in comparison to 52% for TT patients (p = 0.04). For age, a significant difference was found between the nonrejection group and the rejection group (mean+/-S.D. 52.1+/-11.2 vs. 44.4+/-12.3, p = 0.01). This is the first report of the association of a drug disposition genotype with drug-resistant acute rejection in organ transplant patients. The major predictor of acute persistent rejection in the first postoperative year for lung transplant patients was the MDR1 C3435T genotype. This association could be due to drug resistance, altered drug disposition or other immunologic effects associated with P-glycoprotein (P-gp) function. Future prospective treatment algorithms should be developed that will incorporate the knowledge of gene polymorphisms into treatment regimens to improve the outcome following lung transplantation.
Collapse
Affiliation(s)
- H X Zheng
- School of Pharmacy, University of Southern California, 1985 Zonal Avenue, PSC-100, Los Angeles, CA 90033, USA
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
8
|
Zheng HX, Webber SA, Zeevi A, Schuetz E, Zhang J, Lamba J, Boyle GJ, Wilson JW, Burckart GJ. The impact of pharmacogenomic factors on steroid dependency in pediatric heart transplant patients using logistic regression analysis. Pediatr Transplant 2004; 8:551-7. [PMID: 15598322 DOI: 10.1111/j.1399-3046.2004.00223.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Abstract
Many pharmacogenomic predictors of drug response are now available, and include both drug metabolism-disposition factors and drug targets. Information on statistical approaches to analyzing large clinical data sets in relation to genetic polymorphisms is limited. The objective of this study was to evaluate whether logistic regression could identify pharmacogenomic predictors of outcome in a large data set in a complex transplant patient population. Seventy pediatric heart transplant patients were studied. Patients were followed for at least 1 yr post-transplantation as outpatients, and weaned from corticosteroids if clinically appropriate. Logistic regression analysis was used to identify the predictors of steroid dependency. The dependent variable was the presence or absence of steroid therapy at 1 yr post-transplantation. The independent variables were the patients' transplant age, gender, MDR1 C3435T and G2677T, CYP3A53B and cytokine polymorphisms. By chi-square test for the MDR1 C3435T polymorphism, 12 of 18 (67%) patients in the CC group were still on prednisone, whereas only 18 of 47 (38%) of the CT/TT group were still receiving prednisone (p = 0.04). For the IL-10 groups, two of 15 patients with the high producer genotype (13.3%) remained on prednisone, in comparison with 16 of 28 patients with the intermediate producer genotype (57.1%) and 15 of 26 patients with the low producer genotype (57.7%, p = 0.01). Logistic regression analysis confirmed MDR1 C3435T (p = 0.021), and IL-10 polymorphisms (intermediate producer genotype p = 0.015; low producer genotype p = 0.013) as independent risk factors for steroid dependency at 1 yr after transplantation. This approach identifies pharmacogenomic factors, which can be studied more extensively in larger data sets, and used in prospective studies to individualize immunosuppressive therapy following solid organ transplantation.
Collapse
Affiliation(s)
- H X Zheng
- School of Pharmacy, University of Southern California, Los Angeles, CA 90033, USA
| | | | | | | | | | | | | | | | | |
Collapse
|
9
|
Ding YQ, Zheng HX, Wang DS, Lu BZ, Xu JQ. Localization of Barrington's nucleus in the pontine dorsolateral tegmentum of the rabbit. J Hirnforsch 1999; 39:375-81. [PMID: 10536870] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/14/2023]
Abstract
The localization of Barrington's nucleus in the dorsolateral pons of the rabbit and its projections to the sacral spinal cord were examined by using retrograde and anterograde labeling methods combined with immunohistochemistry. After injection of wheat germ agglutinin-horseradish peroxidase (WGA-HRP) or a fluorescence tracer, tetramethylrhodamine-dextran amine (TMR), into the sacral spinal cord segments, a cluster of neurons labeled with WGA-HRP or TMR were seen in the pontine dorsolateral tegmentum. To identify whether the retrogradely labeled neurons were situated within the locus coeruleus, the sections containing TMR-labeled neurons through the pons were incubated with anti-tyrosine hydroxylase (TH) antibody and observed under epifluorescence microscope. It was shown that the cluster of TMR-labeled neurons in the dorsolateral tegmentum were surrounded by TH-positive neurons, but they were negatively immunostained with TH-like immunoreactivity. In anterograde experiment, injection of WGA-HRP into the dorsolateral tegmentum resulted in many anterogradely labeled nerve fibers and terminals in the sacral spinal cord, including the sacral parasympathetic nucleus. The present results suggest that the cluster of neurons in the dorsolateral tegmentum of the rabbit may correspond to Barrington's nucleus revealed in the rat and cat, and thus may be involved in micturtion reflex of the rabbit.
Collapse
Affiliation(s)
- Y Q Ding
- Department of Anatomy, Fourth Military Medical University, Xi'an, People's Republic of China.
| | | | | | | | | |
Collapse
|
10
|
Ding YQ, Zheng HX, Wang DS, Xu JQ, Gong LW, Lü Y, Qin BZ, Shi J, Li HL, Li JS, Shigemoto R, Kaneko T, Mizuno N. The distribution of substance P receptor (NK1)-like immunoreactive neurons in the newborn and adult human spinal cord. Neurosci Lett 1999; 266:133-6. [PMID: 10353345 DOI: 10.1016/s0304-3940(99)00283-9] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [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: 10/18/2022]
Abstract
Substance P receptor (i.e. NK1)-like immunoreactive (SPR-LI) neurons were observed in the newborn and adult human spinal cord. Substance P receptor-like immunoreactive neuronal cell bodies were seen most frequently in lamina I, and were scattered throughout the remaining laminae of the dorsal horn and the area around the central canal. Some neurons in the intermediolateral nucleus also showed weak immunoreactivity. The pattern of distribution of SPR-LI neurons in the adult spinal cord was essentially the same as that in the newborn spinal cord. However, SPR-LI neurons cell bodies were seen much more frequently in the newborn than in the adult dorsal horn, especially in lamina II.
Collapse
Affiliation(s)
- Y Q Ding
- Department of Anatomy, Fourth Military Medical University, People's Republic of China
| | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
11
|
Abstract
To evaluate patients complaining of subjective tinnitus, this study examined their response to peroral betahistine mesilate, vitamin B complex and diazepam in combination. Because three drugs were used together, it remains to be seen whether a single drug or a combination of drugs was effective. We issued questionnaires to 67 patients with tinnitus associated with sensorineural hearing loss of unknown etiology or tinnitus, despite normal hearing in pure tone audiometry and lack of distinct systemic disorders. Our original questionnaire contained seven items and allotted points for each item to facilitate evaluation. After prescribing the above drugs and observing patients' progress for 5 weeks, 50 of the 67 subjects were evaluated again by the same questionnaire. The present study evaluates tinnitus of patients as an example of clinical applications; this was not a controlled double blind study. It was found that, after patients took the prescribed medication, the total number of points were significantly reduced (paired t-test, P < 0.001). After medication, cases of bilateral tinnitus were significantly reduced from 27 to 14, and cases of two types of tinnitus sound, were significantly decreased from 22 to 11 (chi 2-test, P < 0.05). After 5 weeks of administration, 54% of patients felt treatment had been effective. Preliminary results suggest this peroral multi-drug treatment may provide relief for some patients with subjective tinnitus. However, long-term efficacy of the treatment was not investigated.
Collapse
Affiliation(s)
- K Ohsaki
- Division of Clinical Otology, University Hospital, University of Tokushima, School of Medicine, Japan
| | | | | | | | | | | | | |
Collapse
|
12
|
Abstract
In the present study, direct projections from the lumbosacral cord to Barrington's nucleus in the rat were investigated by using retrograde and anterograde tracing techniques. After injection of cholera toxin B subunit (CTb) into Barrington's nucleus, a number of moderately CTb-labeled neurons were observed in the lumbosacral cord, with a slight ipsilateral dominance; most were located in the spinal parasympathetic and dorsal commissural nuclei of the lumbosacral cord. In addition, some retrogradely labeled neurons were found in the periaqueductal gray (PAG). These findings were confirmed by an anterograde labeling experiment. After biotinylated dextran amine (BDA) was injected into the lumbosacral cord, dense BDA-labeled axon terminals were found in Barrington's nucleus as well as in the PAG. Injection of BDA into the PAG resulted in many BDA-labeled terminals in Barrington's nucleus. The present results provided clear evidence for a direct projection from the spinal parasympathetic and dorsal commissural nuclei to Barrington's nucleus that could subserve conveying bladder-filling information from the lumbosacral cord to Barrington's nucleus in the micturition reflex of the rat.
Collapse
Affiliation(s)
- Y Q Ding
- Department of Anatomy and K.K. Leung Brain Research Center, Fourth Military Medical University, Xi'an, People's Republic of China
| | | | | | | | | | | |
Collapse
|
13
|
Gong LW, Ding YQ, Wang D, Zheng HX, Qin BZ, Li JS, Kaneko T, Mizuno N. GABAergic synapses on mu-opioid receptor-expressing neurons in the superficial dorsal horn: an electron microscope study in the cat spinal cord. Neurosci Lett 1997; 227:33-6. [PMID: 9178852 DOI: 10.1016/s0304-3940(97)00286-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [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: 02/04/2023]
Abstract
A double-immunocytochemical electron microscope study was performed in the cat to examine whether GABAergic axons might be in synaptic contact with spinal neurons expressing mu-opioid receptor (MOR) in laminae I and II of the spinal dorsal horn at the lumbar cord segments. Structures showing MOR-like immunoreactivity (-LI) and those showing GABA-LI were labeled, respectively, with diaminobenzidine/peroxidase-reaction products and immunogold particles. Approximately one-third of dendritic profiles with MOR-LI in laminae I and II were postsynaptic to axon terminals with GABA-LI; about one-fourth of somatic profiles with MOR-LI were also postsynaptic to axon terminals with GABA-LI. The results suggest that activation of MOR on postsynaptic neurons may modulate effects which are induced by GABA released from presynaptic neurons.
Collapse
Affiliation(s)
- L W Gong
- Department of Anatomy and K.K. Leung Brain Research Centre, Fourth Military Medical University, Xi'an, PR China
| | | | | | | | | | | | | | | |
Collapse
|
14
|
Lü Y, Zheng HX, Ding YQ, Gong LW, Qin BZ, Li JS. Coexistence of mu-opioid receptor-like and substance P-like immunoreactivities in the cat dorsal root ganglionic neurons. J Hirnforsch 1997; 38:243-6. [PMID: 9176736] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Coexistence of mu-opioid receptor (MOR)-like immunoreactivity (LI) and substance P (SP)-LI in the neurons of the cat dorsal root ganglia (DRG) was examined by a double immunofluorescence histochemical method. Approximately 91% of SP-LI neurons in the DRG showed MOR-LI. However, SP-LI was exhibited in approximately 28% of the neurons labeled with MOR-LI. These morphological findings indicated that the MOR exist on most of the primary afferent SP-containing terminals, and suggest that MOR may regulate SP release from the primary afferent terminals in the cat dorsal horn.
Collapse
Affiliation(s)
- Y Lü
- Department of Anatomy, Fourth Military Medical University Xi an, People's Republic of China
| | | | | | | | | | | |
Collapse
|
15
|
Li YQ, Wang ZM, Zheng HX, Shi JW. Central origins of substance P-like immunoreactive fibers and terminals in the spinal trigeminal caudal subnucleus in the rat. Brain Res 1996; 719:219-24. [PMID: 8782885 DOI: 10.1016/0006-8993(96)00071-6] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [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: 02/02/2023]
Abstract
After trigeminal rhizotomy, some substance P-like immunoreactive (SP-LI) fibers and terminals in the spinal trigeminal caudal subnucleus (Vc), specially in its superficial laminae (laminae I and II), still remained in the rat. Employing a combination of Fluoro-Gold retrograde tracing and immunofluorescence histochemical staining for SP, we found that the main central origins of these SP-LI fibers and terminals were midbrain periaqueductal gray (PAG), nucleus raphe magnus (NRM) and other raphe nuclei, and nucleus reticularis gigantocellularis pars alpha; all of them are important structures of the endogenous pain control system. The present results provided morphological evidence for PAG or NRM stimulation could inhibit neuronal activities in the Vc evoked by orofacial nociceptive stimulation and also suggested that SP might be an important neurotransmitter or neuromodulator for endogenous pain control system.
Collapse
Affiliation(s)
- Y Q Li
- Department of Anatomy, Fourth Military Medical University, Xi'an, People's Republic of China
| | | | | | | |
Collapse
|
16
|
Ohsaki K, Fujimura T, Sugiura T, Tamura K, Nakagiri S, Zheng HX, Hatano A, Kimura A. Reproducibility of pitch-matching test for tinnitus. Using a heptatonic scale. Scand Audiol 1990; 19:123-6. [PMID: 2371536 DOI: 10.3109/01050399009070763] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
We evaluated the reproducibility of measured values obtained using a heptachord pitch-matching test (PMT). Investigation of the measured values by considering the minimum unit width limits of the testing scale revealed that the coincidence ratios of the measured values of intra-daily variations, intra-weekly variations and eight values measured consecutively in one test were as high as 100%, 94.8% and 83.3%, respectively. We therefore concluded that the reproducibility of this method is satisfactory. The measured values obtained by both ordinary one-octave-interval and heptachord PMT are compared in this article.
Collapse
Affiliation(s)
- K Ohsaki
- Division of Clinical Otology, University Hospital, University of Tokushima School of Medicine, Japan
| | | | | | | | | | | | | | | |
Collapse
|
17
|
Gao JH, Xu ZK, Zheng HX. Late result of pediatric thumb reconstruction by free toe transplantation. Chin Med J (Engl) 1983; 96:865-7. [PMID: 6428822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
|