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Chih-Pei Lin,
Feng-Yen Lin,
Po-Hsun Huang,
Yuh-Lien Chen,
Wen-Chi Chen, Huey-Yi Chen,
Yu-Chuen Huang,
Wen-Ling Liao,
Huey-Chun Huang,
Po-Len Liu,
Yung-Hsiang Chen
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ABSTRACT: Endothelial progenitor cells (EPCs) move towards injured endothelium or inflamed tissues and incorporate into foci of neovascularisation, thereby improving blood flow and tissue repair. Patients with cardiovascular diseases have been shown to exhibit reduced EPC number and function. It has become increasingly apparent that these changes may be effected in response to enhanced oxidative stress, possibly as a result of systemic and localised inflammatory responses. The interplay between inflammation and oxidative stress affects the initiation, progression, and complications of cardiovascular diseases. Recent studies suggest that inflammation and oxidative stress modulate EPC bioactivity. Clinical medications with anti-inflammatory and antioxidant properties, such as statins, thiazolidinediones, angiotensin II receptor 1 blockers, and angiotensin-converting enzyme inhibitors, are currently administered to patients with cardiovascular diseases. These medications appear to exert beneficial effects on EPC biology. This review focuses on EPC biology and explores the links between oxidative stress, inflammation, and development of cardiovascular diseases.
BioMed research international. 01/2013; 2013:845037.
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ABSTRACT: The molecular mechanisms underlying stress urinary incontinence (SUI) are not clear. This study was conducted to evaluate molecular alterations in the urethras of mice with experimentally induced SUI.
Eighteen virgin female mice were equally distributed into three groups as follows: two groups undergoing vaginal distension (VD) for 1 h with 3 mm and 8 mm dilators each, and a non-instrumented control group. Changes in leak point pressure (LPP), morphology, lysyl oxidase (LOX) expression and the metabolism of urethral connective tissue were assessed.
The LPP was significantly decreased in the 3 mm and 8 mm VD groups compared with that in the control group. Collagen and elastin expression in the urethra was significantly decreased in the 8 mm VD group compared with that in the control group, while LOX expression was significantly enhanced.
SUI following vaginal trauma involves over-expression of LOX and decreased synthesis of extracellular matrix components or increased proteolysis in the urethra.
European journal of obstetrics, gynecology, and reproductive biology 05/2012; 163(2):224-9. · 1.97 Impact Factor
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ABSTRACT: This study is the first to detect the radial pulses of the three diagnosis positions (inch, bar, and cubit) in both wrists (six positions) by pulse spectrum analysis. The purpose of this study was to identify the difference among pulses of the six positions at three stages of pregnancy and to examine whether the results of this study agree with the theory of Traditional Chinese Medicine (TCM), which states that the cubit pulse shows unique changes for an expectant woman and that the pulse changes coincide with the progression of gestation.
One hundred and fifty (150) healthy pregnant women were divided into three groups according to gestational age (9-14 weeks, 20-28 weeks, and 32-37 weeks of gestation) and 50 healthy nonpregnant women were used as controls. A pulse analyzer was used to detect the six positions of the radial pulses and to calculate the 10 relative energy values of the spectrum's harmonics of the six positions.
Results show that most of the 10 relative spectral energy values of the right and left cubits are statistically (p<0.01) higher than those of the inch for the pregnant women as compared with the nonpregnant women. In addition, the 10 relative spectral energy values of the six positions are not identical at the three stages of pregnancy.
The cubit pulse is unique for pregnant women, which is consistent with the theory of TCM. In addition, the pulse conditions at the three stages of pregnancy are dissimilar.
Journal of alternative and complementary medicine (New York, N.Y.) 03/2012; 18(4):382-6. · 1.69 Impact Factor
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ABSTRACT: Flos carthami (FC), also known as Carthamus tinctorius, is a traditional Chinese herbal plant that has been prescribed since centuries for treating various symptoms related to blood circulation improvement. This study aimed to investigate the effects of FC on calcium oxalate (CaOx) formation in ethylene glycol (EG)-fed rats. A total of 50 male Sprague-Dawley rats were divided into the following 6 groups: group 1, as the normal control (n = 5); group 2 received gastric gavages of starch and 0.75% EG (placebo, n = 5) as a stone inducer; group 3 (n = 10) received EG and potassium citrate as positive controls; group 4 (n = 10) received 0.75% EG and 300 mg/day FC; group 5 (n = 10) was treated with EG and 600 mg/day FC; group 6 (n = 10) received with EG and 1,200 mg/day FC. For all experimental animals, 24-h urine and blood samples were analyzed at the beginning and end of the experiment. Kidney tissue was histopathologically examined using a polarized light microscope, and crystal deposits were evaluated by a semi-quantitative scoring method; these scores were significantly lower in the FC groups (600 and 1,200 mg/day) than in the placebo group. Thus, FC administration appeared to inhibit the deposition of CaOx crystal EG-fed rats. We, therefore, consider that FC may be effective for preventing stone disease, albeit with certain side effects, such as a bleeding tendency. Further clinical trials are needed for evaluating its benefits and possible side effects.
Urological Research 03/2012; · 1.23 Impact Factor
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ABSTRACT: Melamine-tainted food can induce renal stones in both humans and animals. We have previously reported a novel Drosophila model for the study of renal stone disease. In addition to hyperoxaluria-causing agents, we also tested herein the effect of melamine on crystal formation in Drosophila . The results indicate that administration of melamine alone caused crystal formation in a dose-dependent manner. The crystals also appeared after ingestion of melamine for 3 weeks in the Malpighian tubules of Drosophila when viewed with polarized light. Administration of potassium citrate (K citrate) was found to significantly ameliorate the melamine-induced reduction of lifespan. However, administration of K citrate failed to reduce the quantity of crystals. Because calcium oxalate is not the major crystal induced by melamine, the predominant components of melamine-induced crystals and the potential crystal inhibitors warrant further investigation.
Journal of Agricultural and Food Chemistry 03/2012; 60(10):2753-7. · 2.82 Impact Factor
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Jung-Tung Liu,
Yuh-Lien Chen,
Wen-Chi Chen, Huey-Yi Chen,
Yi-Wen Lin,
Shu-Huei Wang,
Kee-Ming Man,
Hui-Min Wan,
Wei-Hsian Yin,
Po-Len Liu,
Yung-Hsiang Chen
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ABSTRACT: Pigment epithelium-derived factor (PEDF) was first identified in retinal pigment epithelium cells. It is an endogenously produced protein that is widely expressed throughout the human body such as in the eyes, liver, heart, and adipose tissue; it exhibits multiple and varied biological activities. PEDF is a multifunctional protein with antiangiogenic, antitumorigenic, antioxidant, anti-inflammatory, antithrombotic, neurotrophic, and neuroprotective properties. More recently, PEDF has been shown to be the most potent inhibitor of stem/progenitor cell-associated neovascularization. Neovascularization is a complex process regulated by a large, interacting network of molecules from stem/progenitor cells. PEDF is also involved in the pathogenesis of angiogenic eye disease, tumor growth, and cardiovascular disease. Novel antiangiogenic agents with tolerable side effects are desired for the treatment of patients with various diseases. Here, we review the value of PEDF as an important endogenous antiangiogenic molecule; we focus on the recently identified role of PEDF as a possible new target molecule to influence stem/progenitor cell-related neovascularization.
Journal of Biomedicine and Biotechnology 01/2012; 2012:871272. · 2.44 Impact Factor
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ABSTRACT: The authors report a case of congenital hepatoblastoma that was diagnosed in the antenatal period at 39 weeks' gestation. The infant was delivered vaginally without rupture of the tumor. The neonate then received chemotherapy and underwent surgical excision of the tumor. After 1 year, no tumor recurrence has been noted.
Pediatric Hematology and Oncology 03/2011; 28(2):150-4. · 0.89 Impact Factor
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ABSTRACT: Several animal species are used to study calcium oxalate urolithiasis; however, an ideal model has yet to be identified. We used Drosophila as a model organism and fed the flies lithogenic agents such as ethylene glycol, hydroxyl-L-proline, and sodium oxalate. At different times, the Malpighian tubules, the kidney equivalent of insects, were dissected and a polarized light microscope used to highlight the birefringent crystals. Scanning electron microscopy and energy-dispersive X-ray spectroscopy confirmed that the crystal composition was predominately calcium oxalate. Furthermore, administration of potassium citrate successfully reduced the quantity of and modulated the integrity of the ethylene glycol-induced crystals. Thus, the Drosophila model of bio-mineralization produces crystals in the urinary system through many lithogenic agents, permits observation of crystal formation, and is amenable to genetic manipulation. This model may mimic the etiology and clinical manifestations of calcium oxalate stone formation and aid in identification of the genetic basis of this disease.
Kidney International 03/2011; 80(4):369-77. · 6.61 Impact Factor
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ABSTRACT: The goal of this study was to analyze the potential risk factors of surgical failure after posterior intravaginal slingplasty for uterine or vaginal vault prolapse.
Women with symptomatic uterine or vaginal vault prolapse that extended to or beyond the introitus were eligible for inclusion. Each woman underwent a detailed history taking and a vaginal examination for staging of pelvic organ prolapse before treatment. Follow-up evaluations were at 3, 6, 9, 12, 18, 24, and 30 months after the operation. Surgical failure is defined as the presence of symptomatic uterine or vaginal vault prolapse ≧stage 2 (higher than 0, at the hymen) after posterior intravaginal slingplasty.
The surgical failure rate (8/61) following posterior intravaginal slingplasty was 13.1%. Using univariable logistic regression, C or D point stage IV before surgery was significantly associated with surgical failure of posterior intravaginal slingplasty for uterine or vaginal vault prolapse. Complications (11/61=18%) included vaginal erosion (9.8%), blood loss over 500 ml (4.9%), and perineal pain (3.3%).
Procidentia is a significant risk factor for surgical failure of posterior intravaginal slingplasty, and therefore this procedure should never be used alone in patients with complete uterine or vaginal vault prolapse.
European journal of obstetrics, gynecology, and reproductive biology 01/2011; 155(1):106-9. · 1.97 Impact Factor
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Wu-Chou Lin,
Chien-Yi Ho,
Yung-Hsiang Chen,
I-Cheng Chen, Huey-Yi Chen,
Fuu-Jen Tsai,
Jui-Lung Shen,
Samantha Shan Man,
Po-Hsun Huang,
Yuh-Lien Chen,
Kee-Ming Man,
Wen-Chi Chen
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ABSTRACT: The physiological response of the cardiac autonomic nervous system during shock wave lithotripsy (SWL) remains unclear. Heart rate variability (HRV) is an index of cardiac autonomic balance. This study aimed to analyze HRV during SWL in patients with urolithiasis. Electrocardiograms of patients who underwent SWL were obtained. Recordings were obtained before and after SWL. For each time point, the recordings were obtained continuously for 6 min, after which R wave-to-R wave (RR) intervals were extracted. The time digital sequence derived from RR intervals was the HRV signal. Time-domain analysis revealed that the mean of RR intervals (MRR) and standard deviation of normal beat-to-normal beat (NN) intervals (SDNN), but not the square root of the mean squared difference of successive NNs (RMSSD) or triangular interpolation of NN intervals (TINN), significantly increased during SWL. The increase in SDNN persisted after SWL but MRR returned to the initial level. Frequency-domain analysis revealed that very low frequency (VLF), low frequency (LF), and LF/high frequency (HF) ratio significantly increased after SWL, while there was no statistically significant difference in HF. Thus, the patients had significantly high MRR and SDNN during SWL and significantly high SDNN, VLF, LF, and LF/HF ratio after SWL. SWL could alter the functioning of the cardiac autonomic nervous system, resulting in reduction in sympathetic activity and increase in parasympathetic activity. Further studies with larger samples are required to confirm these findings and understand the underlying mechanisms.
Urological Research 10/2010; 39(2):135-40. · 1.23 Impact Factor
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Chao-Te Lee,
Yung-Hsien Chang,
Wei-Yong Lin,
Jian-Ming Xu, Huey-Yi Chen,
Pei-Lung Chou,
Ching-Wan Cheng,
Yuh-Lien Chen,
Fen-Yen Lin,
Fuu-Jen Tsai,
Hann-Luen Huang,
Kee-Ming Man,
Po-Len Liu,
Jung-Tung Liu,
Wen-Chi Chen,
Yung-Hsiang Chen
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ABSTRACT: Renal colic caused by ureteral stone is commonly encountered in the emergency department (ED). This study was designed to measure meridian electrical conductance of patients with ureteral stone in emergency settings.
A cohort of patients who had ureteral calculus and acute renal colic and who had visited the ED was enrolled in this study. A device, the design of which is based on the Ryodoraku theory, was used to measure the meridian electrical conductance of patients in the ED. Sixty (60) patients (aged 42.0 +/- 12.6 years) who had a primary ED diagnosis of ureteral calculus or renal colic were enrolled. Thirty (30) healthy volunteers (aged 40.8 +/- 11.7 years) were recruited to serve as controls.
Statistical analysis showed that (1) the average electrical conductance of the patient group was statistically lower than that of the control group (p < 0.01), (2) the average index of sympathovagal balance of the patient group was statistically higher than that of the control group (p < 0.01), (3) the average coefficient of variation of the electrical conductance and index of sympathovagal balance in the patient group was statistically different from that in the control group (p < 0.01), and (4) the patients who needed intervention had a higher autonomic nervous imbalance than the patients who had spontaneous stone passage (p < 0.01).
Measures of electrical conductance, especially the index of sympathovagal balance, may be used as valuable supplementary diagnostic methods for selective intervention in patients with acute renal colic.
Journal of alternative and complementary medicine (New York, N.Y.) 08/2010; 16(8):861-6. · 1.69 Impact Factor
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ABSTRACT: Membranous glomerulonephritis (MGN) is one common cause of idiopathic nephrotic syndrome. Transient receptor potential cation channel 6 (TRPC6) has been identified as causing a familial form of progressive focal and segmental glomerulosclerosis. The objective was to clarify the relationship between TRPC6 polymorphisms and MGN. We recruited a cohort of 134 biopsy-diagnosed MGN patients and 265 healthy subjects. Genotyping of TRPC6 polymorphisms was performed using allele-specific polymerase chain reaction methods. We then analyzed associations between TRPC6 gene polymorphisms and clinical manifestations and pathogenesis of MGN. There was no statistically significant difference of TRPC6 gene rs3824935 C/T, rs17096918 C/T, and rs4326755 A/G polymorphisms between controls and patients with MGN. There was no statistical significance of allele frequencies in these two groups. The characteristics of clinical parameters in TRPC6 gene (rs3284935) C/T polymorphism revealed no difference except proteinuria (p < 0.0005) between CC and non-CC genotype in MGN patients. Besides, no apparent statistically significant differences of rs17096918 C/T (TT and non-TT) and rs4326755 A/G (AA and non-AA) polymorphisms between genotypes were found in the clinical parameters. There is no different genotype distribution between normal controls and patients with MGN of TRPC6 gene. The data also show that TRPC6 gene may not be associated with disease clinical course of MGN.
Renal Failure 07/2010; 32(6):666-72. · 0.82 Impact Factor
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Wen-Chi Chen,
San-Yuan Wu,
Hsin-Ping Liu,
Chiao-Hui Chang, Huey-Yi Chen,
Hsin-Yi Chen,
Chou-Huang Tsai,
Yi-Chun Chang,
Fuu-Jen Tsai,
Kee-Ming Man,
Po-Len Liu,
Feng-Yen Lin,
Jui-Lung Shen,
Wei-Yong Lin,
Yung-Hsiang Chen
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ABSTRACT: Melamine-contaminated milk formula caused infant nephrolithiasis in some areas of China. Its combination with cyanuric acid causes crystallization in renal tubules. Following this renal damage and even renal failure that require long-term hemodialysis has been reported. Therefore, correct and timely diagnosis of these complex diseases is critical. Melamine containing stone is a combination of equal molar ratios of common stone compositions that has been reported from previous animal studies. We have previously identified the compositions of urinary tract stones with infrared (IR) spectroscopy. We hypothesized that the absorbance of wavelength of IR can identify melamine/cyanuric acid in the presence of mixing human stone compositions. In this study, we made an artificial stone composition and examine under IR absorbance by mixing equal molar ratios of melamine/cyanuric acid with different types of human urinary stones, and established a reference of IR analysis for the identification of melamine/cyanuric acid-containing human urinary tract stones. Knowledge of the precise stone composition allowed institution of appropriate prophylactic dietary and medical therapy and this may help in the prevention of urinary stone recurrence. The results are promising that melamine and cyanuric acid can be identified clearly in a low percentile (approximately 1%) of stone mixture pellet. Therefore, IR seems to be an ideal tool for the identification of melamine/cyanuric acid-containing stones.
Journal of Clinical Laboratory Analysis 03/2010; 24(2):92-9. · 1.38 Impact Factor
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ABSTRACT: Matrix metalloproteinase-9 is known to play an important role in the pathophysiology of pelvic organ prolapse. We investigated whether the matrix metalloproteinase-9 gene polymorphisms were associated with pelvic organ prolapse by conducting a case-control association study in 92 women with pelvic organ prolapse and 152 women without pelvic organ prolapse.
Genotypes of the matrix metalloproteinase-9 gene polymorphisms (rs3918242, rs17576, and rs2250889) were determined by polymerase chain reaction, followed by restriction fragment length polymorphism analysis.
There was significant difference between women with and without pelvic organ prolapse in the distribution of the matrix metalloproteinase-9 rs17576 genotypes evaluated. Using multivariable logistic regression, menopausal status, matrix metalloproteinase-9 rs17576 genotype AG, and matrix metalloproteinase-9 rs17576 genotype GG were significantly associated with pelvic organ prolapse.
The present study shows that the polymorphism of matrix metalloproteinase-9 rs17576 may be associated with pelvic organ prolapse.
European journal of obstetrics, gynecology, and reproductive biology 02/2010; 149(2):222-4. · 1.97 Impact Factor
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Kuang-Chi Lai,
Wei-Yong Lin,
Kee-Ming Man,
Chou-Haung Tsai, Huey-Yi Chen,
Fuu-Jen Tsai,
Fun-Jou Chen,
Hsin-Yi Chen,
Hsin-Ping Liu,
Tsung-Jung Ho,
Po-Hsun Huang,
Po-Len Liu,
Feng-Yen Lin,
Jui-Lung Shen,
Jung-Tung Liu,
Yung-Hsiang Chen,
Wen-Chi Chen
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ABSTRACT: The interleukin-18 (IL-18) encoding gene has three common single-nucleotide polymorphisms at -607C/A, -137G/C and +105A/C, which have been reported to be associated with several diseases. The aim of this study is to test whether IL-18 polymorphisms could act as genetic markers for renal stone disease.
A control group of 104 healthy subjects, and 272 patients with recurrent calcium oxalate stones were examined. Polymerase chain reaction-based restriction endonuclease analysis was used to detect IL-18 polymorphisms.
The patient and control groups differed significantly in genotypic expression of the IL-18 +105A/C polymorphism. The prevalence of the A/C + C/C genotypes in the patients was higher than that in the controls. The allelic frequency of IL-18 +105A/C differed significantly between the patients and the controls. The odds ratio (OR) of the A/C heterozygote of IL-18 +105A/C associated with urolithiasis was 2.772. The OR of the A/C + C/C genotypes of IL-18 +105A/C associated with urolithiasis was 3.097. The OR per copy of the C allele of IL-18 +105A/C associated with urolithiasis was 4.143. There were also significant differences in the prevalence of genotype IL-18 -137G/C polymorphisms between the patients and controls. The distribution of the G/G homozygote in the patients was higher than that in the controls. There was no significant difference in genotype and allelic frequency at the IL-18 -607C/A polymorphism between patients and control subjects.
The results indicate that IL-18 +105A/C polymorphisms may play a role in the development of urolithiasis.
Scandinavian Journal of Urology and Nephrology 12/2009; 44(1):20-6. · 0.99 Impact Factor
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ABSTRACT: To evaluate the effects of electroacupuncture (EA) on pregnancy rate and uterine artery blood flow impedance in patients undergoing in vitro fertilization (IVF).
This prospective, randomized trial was carried out in the IVF center of China Medical University Hospital in Taiwan, from February 1, 2004 to January 30, 2005. A total of 44 patients were enrolled in the study. Of these, 30 were allocated to acupuncture, and 14 were allocated to no acupuncture. EA was performed four times, twice a week for 2 weeks, from day 2 of the study to the day before oocyte retrieval. After patients felt the needle reaction, the needles were attached to an electrical stimulator for 30 minutes. Clinical pregnancy and pulsatility index (PI) of right and left uterine arteries before and after EA were measured.
There was no significant difference in pregnancy rate between the two groups (acupuncture group, 30%; non-acupuncture group, 28.6%). The mean PI of both uterine arteries was significantly reduced after EA (left uterine artery, 2.3 to 2.0; right uterine artery, 2.4 to 2.2). There was no significant change in PI in the group with no acupuncture (left uterine artery, 2.5 to 2.3; right uterine artery, 2.4 to 2.3).
EA could be useful for reducing uterine artery blood flow impedance, but did not increase the pregnancy rate in patients undergoing IVF.
Taiwanese journal of obstetrics & gynecology 07/2009; 48(2):148-51.
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ABSTRACT: Progesterone and progesterone receptors (PGR) are known to play important roles in the pathophysiology of pelvic organ prolapse (POP). We investigated whether the PGR gene polymorphisms were associated with POP by conducting a case-control association study in 87 women with POP and 150 women without POP. Genotypes of the PGR gene polymorphisms (rs500760 and rs484389) were determined by polymerase chain reaction, followed by restriction fragment length polymorphism analysis. There was significant difference between women with and those without POP in the distribution of the PGR rs484389 genotypes evaluated. Using multivariable logistic regression, older age, increased body mass index, menopausal status, and PGR rs484389 genotype CT were significantly associated with POP. The present study shows that PGR genotype may be associated with POP.
Acta Obstetricia Et Gynecologica Scandinavica 04/2009; 88(7):835-8. · 1.77 Impact Factor
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ABSTRACT: The goal of this study was to analyze the potential risk factors determining surgical failure after sacrospinous suspension for uterine or vaginal vault prolapse. Each woman underwent a detailed history taking and a vaginal examination before treatment. Follow-up evaluations were at immediate post-operation, 1 week, 1 to 3 months, 6 months, 9 months, and annually after the operation. The surgical failure rate (27/168) following sacrospinous suspension was 16.1%. Using multivariable logistic regression, women with the presence of C or D point stage I at immediate post-operation were a significant risk factor for surgical failure after sacrospinous suspension (odds ratio, 35.34; 95% confidence interval, 8.75-162.75; p < 0.001). The success rate during the 18-month follow-up decreased significantly in women with the presence of C or D point stage I at immediate post-operation than stage 0. Although the sample size of women with symptomatic uterine or vaginal vault prolapse is small, impaired correction of anatomic defects is a significant risk factor for surgical failure of sacrospinous suspension.
International Urogynecology Journal 12/2008; 20(4):387-91. · 1.83 Impact Factor
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ABSTRACT: Estrogen and estrogen receptors are known to play important roles in the pathophysiology of pelvic organ prolapse (POP). We investigated whether estrogen receptor alpha (ERalpha) gene polymorphisms were associated with POP risk by conducting a case-control association study in 88 women with POP and 153 women without POP. Genotypes of the ERalpha (ESR1) gene polymorphisms (rs17847075, rs2207647, rs2234693, rs3798577, and rs2228480) were determined by polymerase chain reaction, followed by restriction fragment length polymorphism analysis. There was significant difference between women with and those without POP in the distribution of the ESR1 rs2228480 genotypes evaluated. By using multivariable logistic regression, age and ESR1 rs2228480 genotype GA were significantly associated with POP risk. Although the sample size of women with POP studied is small, the present study shows that ERalpha genotype may be associated with POP risk.
International Urogynecology Journal 09/2008; 19(8):1159-63. · 1.83 Impact Factor
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ABSTRACT: To investigate whether pelvic organ prolapse (POP) is associated with collagen 3 alpha 1 (COL3A1) polymorphisms and other factors.
A case-control association study was conducted with 84 women affected with POP and 147 controls. The genotypes of nucleotides COL3A1 rs1800255 and COL3A1 rs1801184 polymorphisms were ascertained by polymerase chain reaction and restriction fragment length polymorphism analysis.
The distribution of the COL3A1 rs1800255 genotypes was significantly different among affected women and controls. Older age and incidence of COL3A1 rs1800255 genotype AA were significantly associated with risk of POP.
There may be an association between COL3A1 genotype and risk of POP.
International Journal of Gynecology & Obstetrics 09/2008; 103(1):55-8. · 2.05 Impact Factor
