Publications by authors named "Hong Chiang Chang"

Article Synopsis
  • The study investigates the penile fibrovascular assembly to determine if it functions as an independent vascular compartment within the human body, addressing a gap in cardiovascular research.
  • Researchers examined 23 male cadavers and analyzed extensive medical imaging and hemodynamic data to gain insight into the structure and function of the penile vasculature.
  • Results indicate that the human penis contains a unique bi-layered fibrovascular assembly with atypical vascular patterns, challenging previous assumptions about penile venous drainage.
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Background: Pelvic arterial (PLA) stenosis is associated with arterial insufficiency of the penis and erectile dysfunction (ED), but the effect of different severities of PLA stenosis on ED remains unclear.

Aim: To investigate how different severities of PLA stenosis affect erectile function.

Methods: We included patients who visited our clinic for ED and underwent computed tomography angiography (CTA) and dynamic duplex sonography (DUS).

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Background: Among the emerging treatments for erectile dysfunction (ED), platelet-rich plasma (PRP), known for its ability to enhance tissue repair and regeneration, stands out as a promising therapeutic approach. In this innovative study, we aimed to assess the efficacy of intracavernous injections of platelet lysate (PL), a derivative of PRP, in improving erectile function among ED patients.

Methods: We enrolled twenty-six patients, aged between 35 and 70 years (mean age 51.

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Male infertility (MI) and male sexual dysfunction (MSD) can often coexist together due to various interplay factors such as psychosexual, sociocultural and relationship dynamics. The presence of each form of MSD can adversely impact male reproduction and treatment strategies will need to be individualized based on patients' factors, local expertise, and geographical socioeconomic status. The Asia Pacific Society of Sexual Medicine (APSSM) and the Asian Society of Men's Health and Aging (ASMHA) aim to provide a consensus statement and practical set of clinical recommendations based on current evidence to guide clinicians in the management of MI and MSD within the Asia-Pacific (AP) region.

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Introduction: Penile reconstructive and prosthetic surgery remains a highly specialized field where potential complications can be devastating, and unrealistic patient expectations can often be difficult to manage. Furthermore, surgical practice can vary depending on locoregional expertise and sociocultural factors.

Methods: The Asia Pacific Society of Sexual Medicine (APSSM) panel of experts reviewed contemporary evidence regarding penile reconstructive and prosthetic surgery with an emphasis on key issues relevant to the Asia-Pacific (AP) region and developed a consensus statement and set of clinical practice recommendations on behalf of the APSSM.

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According to the Taiwan Cancer Report, in 2018, prostate cancer was one of the top five cancers reported in men. Each year, many patients with prostate cancer undergo radical prostatectomy (RP) therapy. One of the most common RP complications is erectile dysfunction (ED).

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Article Synopsis
  • The study explored how common lower urinary tract symptoms (LUTS) are in school-age children with Attention-Deficit/Hyperactivity Disorder (ADHD) by using two groups: one from a hospital and a larger one from a national insurance database.
  • Results indicated that children with ADHD had significantly higher scores for LUTS and specific symptoms, such as the inability to wait to urinate, compared to those without ADHD.
  • The research concluded that children with ADHD are more likely to experience significant LUTS, particularly storage symptoms and enuresis (bedwetting), which suggests a need for further evaluation of bladder issues in this population.
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Dynamic duplex sonography (DUS) is not comprehensive in the evaluation of arteriogenic erectile dysfunction (ED). We introduced a new parameter, the flow index (FI), into the assessment of arteriogenic ED. A retrospective review of a prospective database was conducted.

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Objective: Prostate-specific antigen levels after transurethral enucleation of the prostate may serve as indicators of residual cancer foci. The objective of this study was to investigate the association between the post-transurethral enucleation of the prostate nadir prostate-specific antigen level and prostate cancer.

Materials And Methods: We retrospectively reviewed the data of 428 men who underwent transurethral enucleation of the prostate between March 2015 and April 2021.

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Coil embolization (CE) is believed effective-safe for treating penile veno-occlusive dysfunction (VOD). From 2012 to 2016, refractory impotence prompted four men to seek further treatment, although they underwent six CEs elsewhere. Uncontrolled coils scattered along penile drainage veins including the deep dorsal veins (n = 3), periprostatic plexus (n = 1), iliac vein (n = 1), right pulmonary artery (n = 2), left pulmonary artery (n = 1), and right ventricle (n = 1).

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Introduction: The testosterone to estradiol ratio (T/E2 ratio) reportedly exerts a stronger effect on semen quality and sexual desire than does testosterone alone. Clomiphene citrate is a selective estrogen receptor modulator that has long been used as an empirical treatment option in the management of idiopathic oligozoospermia. Clomiphene may change the hypothalamus-pituitary-gonad axis and result in the alteration of the T/E2 ratio.

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Erectile dysfunction (ED) is mostly due to the lack of blood flow into the penis. In the past 20 years, near-infrared spectroscopy (NIRS) was used in measuring the concentrations and temporal dynamics of different hemoglobin types. However, the dynamics of the light absorption (photoplethysmography; PPG) have not been applied to survey penile hemodynamics and erection quality.

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Background/purpose: Several strategies have been reported for improving the integrity of transurethral resection of bladder tumor (TURBT). However, no standard has been established. Stratified TURBT (SR) is one of protocols for TURBT, wherein exophytic tumors are first resected and retrieved, and tumor bases are then resected.

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Background: Human sperm quality fluctuates over time. Therefore, it is crucial for couples preparing for natural pregnancy to monitor sperm motility.

Objective: This study verified the performance of an artificial intelligence-based image recognition and cloud computing sperm motility testing system (Bemaner, Createcare) composed of microscope and microfluidic modules and designed to adapt to different types of smartphones.

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Article Synopsis
  • This study examined how environmental pollutants affect male reproductive health, focusing on a group of 282 men with primary infertility.
  • Findings indicated that exposure to nitrogen oxides (NO) was linked to decreased sperm concentration and motility, while sulfur dioxide (SO) was associated with reduced testicular volume.
  • The results suggest that these pollutants may negatively impact fertility, highlighting the need for further prospective studies to confirm these outcomes.
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Background: Hyperglycemia is associated with series of process leading to oncogenesis. Evidence has shown that diabetes mellitus (DM) seems to be associated with poor prognosis in patients with bladder cancer. However, evidence on the effect of glycemic control on the outcomes of bladder cancer is still limited.

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Cullin-RING E3 ligases are involved in the ubiquitination of substrates that regulate important biological processes and are a potential therapeutic target in many types of cancer. MLN4924, a small molecule of NEDD8-activating enzyme inhibitor, inactivates CRL by blocking cullin neddylation and has been reported to elicit anti-tumor effect. In this study, In this study, we aimed to investigate the effects of MLN4924 on angiogenesis in human umbilical vascular endothelial cells (HUVECs) and four types of cancer cells.

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To evaluate the predictive accuracy of the %p2PSA and prostate health index (PHI) in predicting aggressive pathological outcomes in patients with prostate cancer (PCa) undergoing radical prostatectomy (RP), we enrolled 91 patients with organ-confined PCa who were treated with robot-assisted RP. p2PSA levels and the PHI were investigated for their ability to predict pathological results. The %p2PSA and PHI were both significantly higher in patients with ≥pT3 disease, high-risk disease, positive surgical margin, or seminal vesical invasion (SVI).

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Background/purpose: Pentosan polysulfate sodium (PPS), a semi-synthetic polysaccharide that adheres to bladder mucosa, is effective in treating interstitial cystitis. We evaluated the clinical benefit of PPS for the prevention of recurrent urinary tract infection (UTI) in women.

Methods: We conducted a multicenter, open-label, prospective, phase II, randomized controlled trial enrolling women with recurrent UTI ≥ 2 times in the past 6 months or ≥ 3 times in the past 12 months.

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Cancer cells rely on aberrant transcription for growth and survival. Cyclin-dependent kinases (CDKs) play critical roles in regulating gene transcription by modulating the activity of RNA polymerase II (RNAPII). THZ1, a selective covalent inhibitor of CDK7, has antitumor effects in several human cancers.

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After chemotherapy for the treatment of metastatic bladder urothelial carcinoma (UC), most patients inevitably encounter drug resistance and resultant treatment failure. Deubiquitinating enzymes (DUBs) remove ubiquitin from target proteins and play a critical role in maintaining protein homeostasis. This study investigated the antitumor effect of PR-619, a DUBs inhibitor, in combination with cisplatin, for bladder UC treatment.

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Article Synopsis
  • - The study investigates the trend of using antimuscarinics and off-label alpha-adrenergic blockers to treat lower urinary tract symptoms (LUTS) among Taiwanese women from 2007 to 2012, using a large national health database.
  • - Results showed a significant increase in the use of antimuscarinics, with DDD rising from 69,676.8 to 125,104.3 and a higher prevalence of LUTS in women, especially those over 60, during the study period.
  • - The findings highlight a growing trend in the treatment of LUTS in the Asian female population, providing important epidemiological insights for clinicians and researchers.
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