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Meng LF, Jing JB, Wang M, Liu XD, Hou HM, Zhou YH, Zhang Y, Wang J, Wang J, Wang L, Lyu YY, Wu JY, Zhang YG, Wang XM, Wang JW. [Application of modified urethral separation method in artificial urethral sphincter implantation and its influence on intraoperative urethral pressure profilometry]. Zhonghua Yi Xue Za Zhi 2024; 104:427-432. [PMID: 38326054 DOI: 10.3760/cma.j.cn112137-20230926-00559] [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] [Grants] [Subscribe] [Scholar Register] [Indexed: 02/09/2024]
Abstract
Objective: To explore the application of modified urethral separation method in artificial urethral sphincter (AUS) implantation in patients with stress urinary incontinence (SUI), and its influence on the results of urethral pressure profilometry. Methods: A prospective collection of clinical data was conducted on 25 patients with stress urinary incontinence who underwent modified urethral separation method in AUS implantation and underwent urethral pressure profilometry in Beijing Hospital, Beijing Jishuitan Hospital Affiliated to Capital Medical University and the Second Hospital Affiliated to Tianjin Medical University from March 2019 to June 2023. The improved urethral separation method was to borrow part of the white membrane tissue of the cavernous body while freeing the dorsal side of the cavernous body of the urethra. The circumference of the urethra, sleeve size, and urethral pressure were recorded, the patient's autonomous urinary control before and after surgery and the changes of the international consultation on incontinence questionnaire-short form (ICI-Q-SF) score, incontinence quality of life questionnaire (I-QoL) score, urinary frequency score, nocturia score were compared. Follow-up was conducted in the clinic or by telephone at 1, 3, 6, and 12 months after activation of the device, and once a year thereafter. Local skin status and urine control were assessed, residual urine volume was measured by ultrasound and subjective score scale was completed. Results: All patients were male, aged 27-85 (65.8±15.7) years old. The circumference of the cuff used in this study was 4.0 cm in 4 patients (16.0%), 4.5 cm in 16 patients (64.0%), 5.0 cm in 4 patients (16.0%), and 5.5 cm in 1 patient (4.0%). Among them, the urethral circumference matched the cuff size in 14 cases (56.0%), the urethral circumference was smaller than the cuff size in 4 cases (16.0%), and the urethral circumference was larger than the cuff size in 7 cases (28.0%). Preoperative urodynamic examination showed that the maximum urethral pressure (MUP) was (78.0±25.9) cmH2O, (1 cmH2O=0.098 kPa) and the maximum urethral closure pressure (MUCP) was (53.4±26.6) cmH2O. The MUP of AUS device in the inactivated state was (88.0±26.5) cmH2O, which was not significantly higher than that before operation (P>0.05). The MUCP was (68.2±24.5) cmH2O, which was significantly higher than that before operation (P<0.05). The MUP and MUCP of the AUS device in the activated state were (146.6±25.2) cmH2O and (123.0±28.3) cmH2O, which were significantly higher than those before surgery and in the inactivated state (both P<0.001). All patients in the group reached the social urinary control standards at the first month of device activation. During a follow-up period of 2-50 months, 22 patients (88.0%) used the initial AUS device and all met social urinary control standards. The AUS device was replaced in 1 case. One patient died of cerebrovascular accident. One patient removed the device due to complications. The number of pads [M (Q1, Q3)] used in 25 patients before and after operation was 4.5 (3.0, 6.5) and 1 (0, 1) respectively, with statistically significant differences (P<0.001). ICI-Q-SF score, I-QoL score, urinary frequency score and nocturia score of 25 patients were significantly improved after surgery (all P<0.05). The incidence of postoperative complications was 20.0% (5/25), including 2 cases of painless hematuria, 1 case of infection, 1 case of urethral erosion, and 1 case of dysuria. Except for one patient who experienced urethral erosion and had his sleeve removed, the remaining four patients regained social urination control with active support treatment, and no symptoms recurred until the last follow-up. Conclusion: The modified urethral separation method has no significant effect on urethral pressure in patients with SUI, and can increase the volume of peri-urethral tissue in the cuff, thereby reducing the risk of intraoperative urethral injury and the incidence of postoperative urethral erosion.
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Affiliation(s)
- L F Meng
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - J B Jing
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - M Wang
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X D Liu
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - H M Hou
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y H Zhou
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y Zhang
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - J Wang
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - J Wang
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - L Wang
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y Y Lyu
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - J Y Wu
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Y G Zhang
- Department of Urology, Beijing Hospital, National Center of Gerontology, Institute of Geriatric Medicine, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - X M Wang
- Department of Urology, South China Hospital Affiliated to Shenzhen University, Shenzhen 518111, China
| | - J W Wang
- Department of Urology, Beijing Jishuitan Hospital Affiliated to Capital Medical University, Beijing 100096, China
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Zhao YL, Li GG, Hou HM, Shi JC, Luo SN. CN and C 2 formation mechanisms in fs-laser induced breakdown of nitromethane in Ar or N 2 atmosphere. J Hazard Mater 2020; 393:122396. [PMID: 32208330 DOI: 10.1016/j.jhazmat.2020.122396] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 02/21/2020] [Accepted: 02/22/2020] [Indexed: 06/10/2023]
Abstract
We investigate atomic and molecular emission of laser-ablated nitromethane in an Ar or N2 buffer gas, with fs laser-induced breakdown spectroscopy. The electronic bands of CN, C2, and NH molecules and the atomic transition lines of C I, N I, and Hα are identified. The time series of the emissions are obtained, and the formation mechanisms of CN and C2 are deduced. The CN violet system, the B2Σ+-X2Σ+ (0-0) band, is chosen to extract plasma temperature from the experimental spectra.
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Affiliation(s)
- Y L Zhao
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - G G Li
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, and Institute of Material Dynamics, Southwest Jiaotong University, Chengdu, Sichuan 610031, People's Republic of China
| | - H M Hou
- School of Physical Science and Technology, ShanghaiTech University, Shanghai 201210, People's Republic of China
| | - J C Shi
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China.
| | - S N Luo
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China; Key Laboratory of Advanced Technologies of Materials, Ministry of Education, and Institute of Material Dynamics, Southwest Jiaotong University, Chengdu, Sichuan 610031, People's Republic of China.
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Chen S, Li YX, Zhang NB, Huang JW, Hou HM, Ye SJ, Zhong T, Zeng XL, Fan D, Lu L, Wang L, Sun T, Fezzaa K, Zhang YY, Tang MX, Luo SN. Capture Deformation Twinning in Mg during Shock Compression with Ultrafast Synchrotron X-Ray Diffraction. Phys Rev Lett 2019; 123:255501. [PMID: 31922810 DOI: 10.1103/physrevlett.123.255501] [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] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 11/27/2019] [Indexed: 06/10/2023]
Abstract
Deformation twinning plays a vital role in accommodating plastic deformation of hexagonal-close-packed (hcp) metals, but its mechanisms are still unsettled under high strain rate shock compression. Here we investigate deformation twinning in shock-compressed Mg as a typical hcp metal with in situ, ultrafast synchrotron x-ray diffraction. Extension twinning occurs upon shock compression along ⟨112[over ¯]0⟩ and ⟨101[over ¯]0⟩, but only upon release for loading along ⟨0001⟩. Such deformation mechanisms are a result of the polarity of deformation twinning, which depends on directionality and relative magnitude of resolved shear stress and may be common for Mg and its alloys in a wide range of strain rates.
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Affiliation(s)
- S Chen
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - Y X Li
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - N B Zhang
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - J W Huang
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - H M Hou
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, and Institute of Material Dynamics, Southwest Jiaotong University, Chengdu, Sichuan 610031, People's Republic of China
| | - S J Ye
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - T Zhong
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - X L Zeng
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - D Fan
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - L Lu
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, and Institute of Material Dynamics, Southwest Jiaotong University, Chengdu, Sichuan 610031, People's Republic of China
| | - L Wang
- College of Science, Hunan Agricutural University, Changsha, Hunan 410128, People's Republic of China
| | - T Sun
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - K Fezzaa
- Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois 60439, USA
| | - Y Y Zhang
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - M X Tang
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
| | - S N Luo
- The Peac Institute of Multiscale Sciences, Chengdu, Sichuan 610031, People's Republic of China
- Key Laboratory of Advanced Technologies of Materials, Ministry of Education, and Institute of Material Dynamics, Southwest Jiaotong University, Chengdu, Sichuan 610031, People's Republic of China
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Gao ML, Hou HM, Teng XX, Zhu YL, Hao HS, Zhang GL. Microbial diversity in raw milk and traditional fermented dairy products (Hurood cheese and Jueke) from Inner Mongolia, China. Genet Mol Res 2017; 16:gmr-16-01-gmr.16019451. [PMID: 28290619 DOI: 10.4238/gmr16019451] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [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]
Abstract
Hurood cheese (HC) and Jueke (Jk) are 2 traditional fermented dairy products produced from raw milk (RM) in the Inner Mongolia region of China. They have a long history of production and consumption. The microbial compositions of RM, HC, and Jk vary greatly, and are influenced by their geographical origins and unique processing methods. In this study, 2 batches of RM, HC, and Jk samples were collected (April and August 2015) from the Zhenglan Banner, a region located in the southern part of Inner Mongolian belonging to the Xilingol league prefecture. The bacterial and fungal diversities of the samples were determined by 16S rRNA and 18S rRNA gene sequence analysis, respectively. A total of 112 bacterial and 30 fungal sequences were identified, with Firmicutes and Ascomycota being the predominant phyla for bacteria and fungi, respectively. Lactococcus and Lactobacillus were identified as the main bacterial genera, whereas Kluyveromyces was the predominant fungus identified in the 3 dairy products. Different bacterial and fungal compositions were observed in RM, HC, and Jk samples collected at different times. These results suggested that time of production may be an important factor influencing the microbial diversity present in RM, HC, and Jk.
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Affiliation(s)
- M L Gao
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, China.,School of Life Science and Biotechnology, Dalian University of Technology, Dalian, China
| | - H M Hou
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, China
| | - X X Teng
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, China
| | - Y L Zhu
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, China
| | - H S Hao
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, China
| | - G L Zhang
- School of Food Science and Technology, Dalian Polytechnic University, Dalian, China
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Liu M, Hou HM, Li X, Zhang YQ, Wan B, Wang JY, Jin B. [Value of prostate volume, PSAD and F/T in the detection of prostate cancer in males with PSA 4-10 μg/L]. Zhonghua Zhong Liu Za Zhi 2016; 38:526-9. [PMID: 27531267 DOI: 10.3760/cma.j.issn.0253-3766.2016.07.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
OBJECTIVE To evaluate the association of prostate volume, PSAD and F/T with prostate cancer detection rate in males with a total PSA of 4-10 μg/L. METHODS Clinical data of 196 patients who underwent prostate biopsy from November 2006 to September 2010 and with a PSA of 4-10 μg/L were retrospectively analyzed. The association of detection rate of prostate cancer with prostate volume, prostate specific antigen density PSAD) and free PSA/total PSA ratio (F/T) was analyzed by Spearman coefficient, receiver operating characteristic curve and logistic regression analysis. RESULTS The prostate volume, PSAD and F/T had a significant association with detection rate of prostate cancer (P<0.05 for all). The odd ratio was 0.96, 1.91 and 0.02, respectively. The area under curve (AUR) was 0.31, 0.66 and 0.63, respectively. The cancer detection rate was decreased along with the increase of prostate volume. When PSAD 0.15 ng·ml(-1)·ml(-1) was used as the cut-off value, the sensitivity, specificity, positive prediction rate and negative prediction rate was 72.3%, 51.1%, 42.3% and 21.2%, respectively. When the patients were divided by prostate volume into <19.9, 20-39.9, 40-59.9, 60-79.9 and >80 ml subgroups, the cancer detection rate of each subgroup was 50.0%, 45.6%, 30.8%, 15.4% and 5.6%, respectively. CONCLUSION In patients with a total PSA of 4-10 μg/L, the prostate cancer detection rate has a significant association with prostate volume, PSAD and F/T.
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Affiliation(s)
- M Liu
- Department of Urology, Beijing Hospital of the Ministry of Health, Beijing 100000, China
| | - H M Hou
- Department of Urology, Beijing Hospital of the Ministry of Health, Beijing 100000, China
| | - X Li
- Department of Urology, Beijing Hospital of the Ministry of Health, Beijing 100000, China
| | - Y Q Zhang
- Department of Urology, Beijing Hospital of the Ministry of Health, Beijing 100000, China
| | - B Wan
- Department of Urology, Beijing Hospital of the Ministry of Health, Beijing 100000, China
| | - J Y Wang
- Department of Urology, Beijing Hospital of the Ministry of Health, Beijing 100000, China
| | - B Jin
- Department of Urology, Beijing Hospital of the Ministry of Health, Beijing 100000, China
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Hou HM, Li HE, Gao M, Wang H, Jiao C, Wang XP. Expression of a GDP-L-galactose phosphorylase-like gene in a Chinese wild Vitis species induces responses to Erysiphe necator and defense signaling molecules. Genet Mol Res 2013; 12:3830-44. [PMID: 24085444 DOI: 10.4238/2013.september.23.1] [Citation(s) in RCA: 4] [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: 11/03/2022]
Abstract
Using rapid amplification of cDNA ends, a full-length cDNA sequence of a GDP-L-galactose phosphorylase-like gene was isolated from leaves infected by Erysiphe necator in the Chinese wild (Vitis pseudoreticulata) clone, 'Baihe-35-1', an E. necator-resistant genotype. The full-length cDNA, designated as VpVTC, comprised 1943 bp and putatively encodes a 453-amino acid polypeptide containing an HIT motif. The deduced amino acid sequence showed high similarity with that of VTC genes from other plants. The expression of VpVTC, determined by reverse transcriptase-polymerase chain reaction, was induced by E. necator and defense signaling molecules, including salicylic acid, methyl jasmonate, and ethephon, in 'Baihe-35-1', the V. quinquangularis genotype 'Shang-24', and the E. necator-susceptible V. pseudoreticulata genotype, 'Hunan-1'. Transcript levels of VpVTC correlated well with the degree of disease resistance in the 3 genotypes. Maximum induction of VpVTC by E. necator (>7-fold at 96 h post-inoculation) occurred in 'Baihe-35-1', which also showed the fastest response to signaling molecules. Upregulating the expression of VpVTC in 'Baihe-35-1' resulted in a gradual increase in the ascorbic acid concentration of leaves inoculated with E. necator. Furthermore, VpVTC was expressed in leaves, stems, inflorescence, tendrils, and fruit at all developmental stages, with the highest level occurring in fruit 35 days after flowering.
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Affiliation(s)
- H M Hou
- State Key Laboratory of Crop Stress Biology in Arid Areas, College of Horticulture, Northwest A&F University, Yangling, Shaanxi, China
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Hou HM, Sam K, Hägg U, Rabie ABM, Bendeus M, Yam LYC, Ip MS. Long-term dentofacial changes in Chinese obstructive sleep apnea patients after treatment with a mandibular advancement device. Angle Orthod 2006; 76:432-40. [PMID: 16637723 DOI: 10.1043/0003-3219(2006)076[0432:ldcico]2.0.co;2] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022] Open
Abstract
The objective of this study was to evaluate long-term dentofacial changes in Chinese obstructive sleep apnea (OSA) patients treated with a mandibular advancement device (MAD). Lateral cephalograms in natural head posture were obtained from 67 consecutive OSA patients (mean age = 46.9 +/- 8.9 years) treated with an MAD. The cephalograms were obtained at start of treatment (T0), after 1 year (T1), 2 years (T2), and 3 years (T3) of treatment. The lateral cephalograms were digitized twice, and the average of two readings was used for statistical analyses. Small, but statistically significant changes occurred in some dentofacial variables. The lower anterior facial height steadily increased during the observation period, and this increase was significant for the T0-T1 and T1-T2 periods and marginally significant for the T2-T3 period. A significant increase in the mandibular plane angle was observed during the T0-T1 and T2-T3 periods only. Significant reductions in the overjet and overbite were observed for the T0-T1 period but not thereafter. Statistically significant dentofacial changes were observed in this study, but they were of small magnitude. The overjet and overbite changes observed mainly occurred at the initial stage of treatment.
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Affiliation(s)
- H M Hou
- Faculty of Dentistry, The University of Hong Kong, Prince Philip Dental Hospital, 34 Hospital Road, Hong Kong SAR, People's Republic of China
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He GA, Hou HM, Liu XJ. Naltrexone microspheres: in vitro release and effect on morphine analgesia in mice. Acta Pharmacol Sin 2001; 22:530-3. [PMID: 11747760] [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: 02/22/2023] Open
Abstract
AIM To study in vitro release and in vivo effect of four different types of sustained-release naltrexone microspheres on morphine analgesia. METHODS Release of naltrexone from four types of biodegradable microspheres was investigated by HPLC. Their antagonist effects on morphine analgesia were observed using mouse hot-plate procedure. RESULTS Poly latide-co-glycolide (PLGA) composition had a remarkable effect on naltrexone release from microspheres and its antagonism towards morphine analgesia. Two formulations of PLGA 50:50 formulation released more than 80 % of total naltrexone and lost their antagonism by 8 d. The PLGA 75:25 formulation with 20 % and 30 % drug loadings did not release 95 % of total drug and lose antagonism until 40 d and 30 d, respectively. Increasing the drug loading enhanced naltrexone release from microspheres and seemed to shorten the analgesic antagonistic effect of naltrexone. CONCLUSION Antagonism by naltrexone microspheres towards morphine analgesia correlates well with the drug release in vitro.
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Affiliation(s)
- G A He
- National Pharmaceutical Engineering Research Center, Shanghai Institute of Pharmaceutical Industry, Shanghai 200437, China.
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Wang H, Hou HM. Improvement of transdermal permeation of captopril by iontophoresis. Acta Pharmacol Sin 2000; 21:591-5. [PMID: 11360663] [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: 04/16/2023] Open
Abstract
AIM The feasibility of iontophoresis on the transdermal delivery of captopril was studied. METHODS Iontophoresis was employed for enhancing transdermal transport of captopril through rat skin in vitro and in vivo. RESULTS It was demonstrated that the iontophoresis-induced flux of captopril was affected by various factors such as pH, ionic concentration, and the concentration of captopril in donor compartments as well as the applied electric current intensity. Electric current could induce several-fold increase in captopril flux with hydrogel. Skin permeation study in vivo in rats demonstrated that iontophoresis could effectively promote the transdermal transport of captopril without significant skin irritation. Captopril concentration in plasma reached plateau (approximately 0.9 microgram/mL) at 1 h after current application and was maintained at the same level during the experiment. On the contrary, captopril could not be detected in plasma when the current was not applied. No obvious skin irritation was observed after 9-h continuous iontophoresis. CONCLUSION Transdermal delivery of captopril can be effectively improved by iontopophoresis.
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Affiliation(s)
- H Wang
- National Pharmaceutical Engineering Research Center, Shanghai 200437, China
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Gu TH, Chen SX, Zhu JB, Song DJ, Guo JZ, Hou HM. [Pharmacokinetics and pharmacodynamics of diltiazem floating tablets]. Zhongguo Yao Li Xue Bao 1992; 13:527-31. [PMID: 1302441] [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: 12/26/2022]
Abstract
Floating tablet is a new type of delayed-action preparations. The present study was aimed at pharmacokinetic and hemodynamic effects of diltiazem floating tablet in 8 healthy volunteers. Each subject received po 90 mg diltiazem floating and normal tablets in a crossover design. For floating tablets the T1/2 (6.4 +/- 4.4 h) and Cmax (56 +/- 23 ng.ml-1) were longer and lower than those of normal tablets (2.3 +/- 1.1 h and 96 +/- 30 ng.ml-1, P < 0.01), respectively. AUC of the 2 forms were similar, suggesting that they had same bioavailability. Diltiazem lowered the blood pressure of the subjects. Although there was no significant difference between the 2 formulations in maximal decreases of systolic and diastolic blood pressures, the duration of hypotension was longer with floating tablets than that with normal ones. There was a positive correlation between diltiazem concentration and its hypotensive action. Thus, administration of floating tablets twice a day may be effective in controlling the blood pressure of hypertensive patients.
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Affiliation(s)
- T H Gu
- Shanghai Institute of Hypertension, China
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Zhao Y, Li AY, Xie PS, Hou HM, Gu WG, Jia MH, Liu X, Lei TK. Experimental studies on the effect of artesunate sustained released tablet on Plasmodium cynomolgi. J TRADIT CHIN MED 1987; 7:287-9. [PMID: 3449712] [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: 01/05/2023]
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Lu ML, Shyu PP, Hou HM, Cheng R. [Direct amperometric titration of amines with sodium tetraphenyloborate solution]. Yao Xue Xue Bao 1965; 12:713-9. [PMID: 5899054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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