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Nguyen THV, Tran TT, Cam TI, Pham MQ, Pham QL, Vu DH, Nguyen XN, Chau VM, Van KP. Alkaloids From Zanthoxylum nitidum and Their Cytotoxic Activity. Nat Prod Commun 2019. [DOI: 10.1177/1934578x19844133] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Zanthoxylum nitidum (Roxb.) DC (Rutaceae) is a traditional medicine used for the treatment of various diseases like toothache, gingivitis, fever, colic vomiting, diarrhea, and cholera. Three new alkaloids, zanthocadinanine C (1), 7-methoxy-8-demethoxynitidine (2), and zanthonitiside I (3) were isolated from the stems and twigs of Z. nitidum. Their structures were determined on the basis of extensive spectroscopic, including 1-dimensional and 2-dimensional nuclear magnetic resonance and mass spectroscopy data. Compounds 1–3 were evaluated for cytotoxic activity against 5 human cancer cell lines, KB, MCF-7, LNCaP, HepG-2, and LU-1. Compound 2 showed significant cytotoxic activity against all tested human cancer cell lines with IC50 values ranging from 10.3 to 12.6 µM.
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Affiliation(s)
- Thi Hong Van Nguyen
- Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Thi Tuyen Tran
- Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Thi Inh Cam
- Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Minh Quan Pham
- Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Quoc Long Pham
- Institute of Natural Product Chemistry, Vietnam Academy of Science and Technology (VAST), Cau Giay, Hanoi, Vietnam
| | - Dinh Hoang Vu
- Hanoi University of Science and Technology, Hai Ba Trung, Hanoi, Vietnam
| | | | - Van Minh Chau
- Institute of Marine Biochemistry, VAST, Cau Giay, Hanoi, Vietnam
| | - Kiem Phan Van
- Institute of Marine Biochemistry, VAST, Cau Giay, Hanoi, Vietnam
- Graduate University of Science and Technology, VAST, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
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Yoo G, Park S, Yang H, Nguyen XN, Kim N, Park JH, Kim SH. Two New Phenolic Glycosides from the Aerial Part of Dryopteris erythrosora. Pharmacogn Mag 2017; 13:673-676. [PMID: 29200732 PMCID: PMC5701410 DOI: 10.4103/pm.pm_326_16] [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] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Revised: 09/01/2016] [Indexed: 12/05/2022] Open
Abstract
BACKGROUND Dryopteris erythrosora (D.C. Eaton) Kuntze is a species of fern in the family of Dryopteridaceae, which is distributed throughout East Asia. The genus Dryopteris has been used as traditional medicine, especially to treat hepatitis and protect liver. However, only few studies of chemical constituents of D. erythrosora have been conducted so far. OBJECTIVE In this study, we investigated the phytochemical constituents of D. erythrosora. MATERIALS AND METHODS The 80% methanol extract of the aerial part of D. erythrosora was used for the isolation of phenolic compounds. The isolated compounds were elucidated by various spectroscopic methods including nuclear magnetic resonance and mass spectrometry. RESULTS The present phytochemical investigation on the aerial part of D. erythrosora led to the isolation of two new phenolic glycosides, 1 and 2, as well as nine known flavonoids including two flavones (3 and 4) and seven flavonols (5-11). CONCLUSION In this study, two new phenolic glycosides together with nine known flavonoids were isolated from the aerial part of D. erythrosora. Among them, compounds 4, 8, and 11 were isolated for the first time in Dryopteridaceae family from the present investigation. These results helped us to enrich our understanding of the chemical constituents of D. erythrosora and to identify compounds 1 and 2 which could be potential chemotaxonomic markers for the species. SUMMARY The genus Dryopteris has been used as traditional medicine, especially to treat hepatitis and protect liverTwo new phenolic glycosides were isolated from D. erythrosoraNine known flavonoids (3-11) were isolated from D. erythrosoraCompounds 4, 8, and 11 were isolated for the first time in Dryopteridaceae family. Abbreviations used: HPLC: High-performance liquid chromatography; Q-TOF LC/MS: Quadrupole-time-of-flight liquid chromatography/mass spectrometry; NMR: Nuclear magnetic resonance; TMS: Tetramethylsilane.
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Affiliation(s)
- Guijae Yoo
- College of Pharmacy, Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon 406-840, Korea
| | - SeonJu Park
- College of Pharmacy, Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon 406-840, Korea
| | - Heejung Yang
- Research center natural medicine research Team, Richwood Pharmaceutical company, Ltd., Seoul, 08826, Republic of Korea
| | - Xuan Nhiem Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
| | - Nanyoung Kim
- College of Pharmacy, Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon 406-840, Korea
| | - Jun Hyung Park
- College of Pharmacy, Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon 406-840, Korea
| | - Seung Hyun Kim
- College of Pharmacy, Yonsei Institute of Pharmaceutical Science, Yonsei University, Incheon 406-840, Korea
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Nguyen XN, Nguyen TC, Dan TTH, Do TT, Nguyen HN, Pham HY, Do CT, Vu KT, Hoang LTA, Bui HT, Chau VM, Phan VK. (1)H and (13)C NMR assignments of sesquiterpenes from Dysidea fragilis. Magn Reson Chem 2015; 53:1057-1060. [PMID: 26290322 DOI: 10.1002/mrc.4288] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2015] [Revised: 05/29/2015] [Accepted: 06/05/2015] [Indexed: 06/04/2023]
Affiliation(s)
- Xuan Nhiem Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Thi Cuc Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Thi Thuy Hang Dan
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Thi Trang Do
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Hoai Nam Nguyen
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Hai Yen Pham
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Cong Thung Do
- Institute of Marine Environment and Resources, VAST, 246 Danang, Ngo Quyen, Haiphong, Vietnam
| | - Kim Thu Vu
- Faculty of Basic Science, Hanoi University of Mining and Geology, Dongngac, Tuliem, Hanoi, Vietnam
| | - Le Tuan Anh Hoang
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Huu Tai Bui
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Minh Chau
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Van Kiem Phan
- Institute of Marine Biochemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
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Pham THM, Do TL, Nguyen QT, Nguyen NT, Vu PN, Nong VH, Phan VK, Nguyen XN, Chau VM, Park S, Kim SH. New Dibenzocyclooctadiene Lignan from Kadsura induta and Their Cytotoxic Activities. B KOREAN CHEM SOC 2014. [DOI: 10.5012/bkcs.2014.35.6.1859] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Le MH, Do TTH, Phan VK, Chau VM, Nguyen THV, Nguyen XN, Bui HT, Pham QL, Bui KA, Kim SH, Hong HJ, Kim S, Koh YS, Kim YH. ERRATUM. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.7.2218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Vu HG, Ninh KB, Nguyen XN, Phan VK, Chau Van M, Hoang LTA, Pham HY, Bui HT, Nguyen XC, Nguyen HN, Kim SH, Kwon YI, Kim YH. Chemical Constituents of the Morinda tomentosa Leaves and their α-Glucosidase Inhibitory Activity. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.5.1555] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Le MH, Do TTH, Phan VK, Chau VM, Nguyen THV, Nguyen XN, Bui HT, Pham QL, Bui KA, Kim SH, Hong HJ, Kim S, Koh YS, Kim YH. Chemical Constituents of the Rhizome of Eleutherine bulbosa and Their Inhibitory Effect on the Pro-Inflammatory Cytokines Production in Lipopolysaccharide-Stimulated Bone Marrow-derived Dendritic Cells. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.2.633] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nguyen PT, Nguyen HN, Nguyen XC, Nguyen XN, Pham TT, Tran HQ, Nguyen TTN, Phan VK, Chau VM, Kim YH. A New Sterol from the Soft Coral Lobophytum crassum. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.1.249] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Phan VK, Chau VM, Nguyen XN, Pham HY, Hoang LTA, Nguyen XC, Bui HT, Tran HQ, Truong NH, Kim SH, Kwon SU, Lee YM, Kim YH. Chemical Constituents of Ficus drupacea Leaves and Their α-Glucosidase Inhibitory Activities. B KOREAN CHEM SOC 2013. [DOI: 10.5012/bkcs.2013.34.1.263] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Pham TK, Pham TA, Phan VK, Chau VM, Nguyen XN, Bui HT, Nguyen TTN, Tran HQ, Nguyen NP, Kim YH. Benzyl Glycosides from the Aerial Parts of Gynostemma laxum and Their NF-κB Inhibitory Activity in HepG2 Cells. B KOREAN CHEM SOC 2011. [DOI: 10.5012/bkcs.2011.32.10.3763] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Nguyen XN, Phan VK, Chau VM, Bui HT, Nguyen XC, Vu KT, Hoang LTA, Jo SH, Jang HD, Kwon YI, Kim YH. A new monoterpenoid glycoside from Myrica esculenta and the inhibition of angiotensin I-converting enzyme. Chem Pharm Bull (Tokyo) 2011; 58:1408-10. [PMID: 20930414 DOI: 10.1248/cpb.58.1408] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
One new monoterpenoid glycoside, myresculoside (1), and eleven known compounds, were isolated from methanol extract of Myrica esculenta leaves by repeated column chromatography. The effects of these compounds on angiotensin I-converting enzyme (ACE) inhibition were investigated. Compounds 3 and 4 showed the most potent ACE inhibition with rates of 29.97% and 25.63% at concentration of 100 µM, respectively. Compounds 5, 6, and 11 showed weak activity with inhibitory rates of 0.07-1.41% at concentration of 100 µM.
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Affiliation(s)
- Xuan Nhiem Nguyen
- College of Pharmacy, Chungnam National University, Daejeon 305–764, Korea
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Nguyen XN, Phan VK, Chau VM, Ninh KB, Nguyen XC, Le MH, Bui HT, Tran HQ, Nguyen HT, Kim YH. Cucurbitane-type triterpene glycosides from the fruits of Momordica charantia. Magn Reson Chem 2010; 48:392-396. [PMID: 20225243 DOI: 10.1002/mrc.2582] [Citation(s) in RCA: 6] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
The chemical study of Momordica charantia fruits led to the isolation of three new cucurbitane triterpene glycosides, momordicosides U, V, and W (1-3). The structures of these compounds were determined to be (19R, 23R)-5beta, 19-epoxy-19-methoxycucurbita-6,24-diene-3beta, 23-diol 3-O-beta-D-allopyranoside (1), (23R)-5beta, 19-epoxycucurbita-6,24-diene-3beta, 23-diol 3-O-beta-D-allopyranoside (2), and (19R)-5beta, 19-epoxy-19,25-dihydroxycucurbita-6,23(E)-diene-3beta-ol 3-O-beta-D-glucopyranoside (3), by chemical and spectroscopic methods.
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Affiliation(s)
- Xuan Nhiem Nguyen
- Institute of Natural Products Chemistry, Vietnam Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Caugiay, Hanoi, Vietnam
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Nguyen XN, Phan VK, Chau VM, Do TH, Buu HT, Pham HY, Nguyen HT, Hyun JH, Kang HK, Kim YH. Lupane-type triterpene glycosides from the leaves of Acanthopanax koreanum and their in vitro cytotoxicity. Planta Med 2010; 76:189-194. [PMID: 19670159 DOI: 10.1055/s-0029-1186026] [Citation(s) in RCA: 10] [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] [Subscribe] [Scholar Register] [Indexed: 05/28/2023]
Abstract
Three new lupane triterpene glycosides, acankoreosides J-L ( 1- 3), were isolated from the leaves of Acanthopanax koreanum. Based on the spectroscopic data, the chemical structures were determined as 3 alpha-hydroxy-20-oxo-30-norlupane-23,28-dioic 28- O- alpha- L-rhamnopyranosyl-(1 --> 4)- beta- D-glucopyranosyl-(1 --> 6)- beta- D-glucopyranosyl ester ( 1); 3 alpha,20,29-trihydroxylupane-23,28-dioic 28- O- alpha- L-rhamnopyranosyl-(1 --> 4)- beta- D-glucopyranosyl-(1 --> 6)- beta- D-glucopyranosyl ester ( 2); and (20S)-3 alpha-hydroxy-29,29-dimethoxylupane-23,28-dioic 28- O- alpha- L-rhamnopyranosyl-(1 --> 4)- beta- D-glucopyranosyl-(1 --> 6)- beta- D-glucopyranosyl ester ( 3). Compounds 1- 3 were evaluated for their cytotoxicity and showed moderate activity against four cell lines, A549 (lung), HL-60 (leukemia), MCF-7 (breast), and U937 (leukemia), with IC (50) values of 23.4, 36.5, 22.6, and 18.5 microM for 1; 6.8, 18.6, 23.1, and > 100 microM for 2; and 28.9, 21.8, 11.0, and 27.5 microM for 3, respectively.
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Selvais PL, Labuche C, Nguyen XN, Ketelslegers JM, Denef JF, Maiter DM. Cyclic feeding behaviour and changes in hypothalamic galanin and neuropeptide Y gene expression induced by zinc deficiency in the rat. J Neuroendocrinol 1997; 9:55-62. [PMID: 9023738 DOI: 10.1046/j.1365-2826.1997.00566.x] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.2] [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: 02/03/2023]
Abstract
Dietary zinc-deficiency induces a striking reduction and a cyclic pattern of food intake in rodents. To elucidate the mechanisms for these effects, we studied the hypothalamic content, synthesis, and distribution of galanin (GAL) and neuropeptide Y (NPY) during zinc deficiency and refeeding in the rat. In Wistar rats, three weeks of zinc-deprivation consistently induced a reduction and a cyclic pattern of night- and day-time food intake, as well as of water intake. This was accompanied in zinc-deficient (ZD) rats, and to a lesser extent in pair-fed (PF) rats, by a decrease of hypothalamic GAL mRNA concentration (CTR: 100 +/- 8, ZD: 61 +/- 4, PF: 78 +/- 2 arbitrary densitometric units, ADU, P < 0.01) and an increase of hypothalamic NPY (CTR: 100 +/- 11, ZD: 154 +/- 10, PF: 126 +/- 4 ADU, P < 0.05), without peptide modification. The two neuropeptidergic systems were not affected by the cycles of feeding, with the exception of the NPY-immunoreactivity in the suprachiasmatic nuclei (geniculo-hypothalamic tract), that was inversely correlated to the food intake in both ZD and PF animals. In a second experiment, we showed that zinc-repletion for 4 days suppressed the behaviour induced by a two-week zinc-deprivation, and reversed the increase of NPY mRNA in ZD animals. We finally demonstrated that zinc-deficiency induced a similar behaviour in Zucker rats. However, in these rats whose synthesis of NPY is constitutively up-regulated, no change of NPY synthesis was observed in ZD rats, suggesting that the increase observed in Wistar is adaptative rather than instrumental to the abnormal food intake. In conclusion, we have further characterized the cyclic feeding behaviour of the zinc-deficient Wistar rats, and shown in these animals a decreased activity of the GAL system and an increased activity of the NPY system, likely corresponding to a compensatory response of the two neuropeptidergic systems, as observed in food-deprived animals. As spontaneous food intake of ZD rats does not increase, a resistance to NPY could also be present. These behavioural and neuropeptidergic changes were partially reversed by reintroduction of zinc in the diet. In Zucker rats, the same behaviour occurred despite an insensitivity of the NPY system to the zinc-deficiency. In addition, we describe a nutritional regulation of the NPY-immunoreactivity in the geniculo-hypothalamic tract, that could constitute the substrate of circadian rhythm modulation by timed feeding.
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Affiliation(s)
- P L Selvais
- Unite de Diabétologie et Nutrition and Unité d'Histologie, University of Louvain Medical School, Brussels, Belgium
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Nguyen XN, Korth M, Rix R, Sembritzki O. [Blue-sensitive mechanisms in pattern ERG and VEP]. Ophthalmologe 1993; 90:143-7. [PMID: 8490296] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Pattern onset-offset ERGs and VEPs in response to square-wave stripe patterns of different wavelengths and spatial frequencies under chromatic yellow adaptation (two-channel Maxwellian view) were studied in three subjects. One channel provided a steady homogeneous adapting field of 570 nm, while the other channel, containing the patterns, was superimposed on the adapting field (33 degrees). The spectral sensitivity curve of the ERG had a prominent peak in the blue (460 nm) and a shoulder in the red and green (above 500 nm). For wavelengths below 500 nm the shape of the psychophysically determined sensitivity curve to the onset and offset of the pattern was in close agreement with the electroretinal sensitivity curves determined for a low-amplitude criterion. With almost all wavelengths there were two components in the same VEP response at the same time: a slow negative wave with maximum sensitivity at 460 nm and an earlier fast positive component with maximum sensitivity in the red-green region. When the spatial frequency of a 460 nm test pattern was varied under yellow adaptation the onset response in the ERG showed only very slight spatial tuning. In the onset response of the VEP, however, the slow component showed prominent spatial tuning (around 2 c/deg) under the same conditions.
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Jonas JB, Nguyen XN, Naumann GO. Parapapillary retinal vessel diameter in normal and glaucoma eyes. I. Morphometric data. Invest Ophthalmol Vis Sci 1989; 30:1599-603. [PMID: 2745000] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The retinal blood vessels serve for nutrition of the retinal ganglion cells and their axons. This study was undertaken to evaluate the vessel diameter in normal and glaucoma eyes. The calibers of the superior temporal and inferior temporal retinal artery and vein were measured at the optic disc border and at a distance of 2 mm from the optic disc center; 473 eyes of 281 patients suffering from chronic primary open-angle glaucoma and 275 eyes of 173 normal subjects were examined. Fifteen-degree, color stereo optic disc photographs were used. In the normal eyes the inferior temporal vessels were significantly larger than the superior temporal vessels. This corresponds with: (1) the configuration of the normal neuroretinal rim, which is significantly broader in the inferior disc region than in the superior disc area; (2) the visibility of the retinal nerve fibers, which are better detectable in the inferior temporal area than in the superior temporal one; and (3) the foveola location 0.53 +/- 0.34 mm inferior to the optic disc center. The retinal vessel diameter was independent of the patients' age and optic disc and parapapillary chorioretinal atrophy size. In the glaucoma group the vessel caliber was significantly smaller than in the normal eyes. The differences were more marked for the arteries and the inferior temporal vessels, respectively. The vessel diameters decreased significantly with increasing glaucoma stage independently of the patients' age. The parapapillary retinal vessel diameter may reflect the need of vascular supply in the corresponding superficial retinal area. It may be correlated with the local ganglion cell density and retinal nerve fiber layer thickness.
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Affiliation(s)
- J B Jonas
- Department of Ophthalmology, University Erlangen-Nürnberg, West Germany
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Jonas JB, Nguyen XN, Gusek GC, Naumann GO. Parapapillary chorioretinal atrophy in normal and glaucoma eyes. I. Morphometric data. Invest Ophthalmol Vis Sci 1989; 30:908-18. [PMID: 2722447] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Glaucomatous optic nerve damage is associated with alterations of the intra- and parapapillary optic disc area. We measured and compared the parapapillary region in 582 eyes of 321 patients suffering from chronic primary open-angle glaucoma and in 390 eyes of 231 normal subjects. Only one randomly assessed eye per patient and subject was taken for statistical analysis. Highly mopic eyes with a myopic refractive error of more than -8.00 diopters had been excluded. The parapapillary chorioretinal atrophy was divided into a peripheral zone "Alpha" with irregular hyper- and hypopigmentation, and a more central zone "Beta" characterized by whitish colour, visible large choroidal vessels and visible sclera. In the normal eyes both zones were significantly (P less than 0.001) largest and most common in the temporal horizontal sector, followed by the inferior temporal sector, the superior temporal sector and finally the nasal sector. In the glaucoma group both zones were significantly larger (P less than 0.0001; Mann-Whitney test) and more frequent than in the normal eyes (0.40 +/- 0.32 mm2 versus 0.65 +/- 0.49 mm2 for zone Alpha, 0.13 +/- 0.42 mm2 versus 0.79 +/- 1.17 mm2 for zone Beta). The differences were significant also for the earliest glaucoma stage of this study. They were most marked for the nasal parapapillary sector. Significant differences (P less than 0.001) between the normal group and the earliest glaucoma stage were: zone Alpha larger than 0.20 mm2 or broader than 0.20 mm in the temporal horizontal sector, total area of zone Alpha larger than 0.30 mm2, occurrence of zone Alpha in the nasal sector, and occurrence of zone Beta anywhere.
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Affiliation(s)
- J B Jonas
- Department of Ophthalmology, University Erlangen-Nürnberg, Federal Republic of Germany
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