Publications by authors named "Shulin Guo"

Article Synopsis
  • Antidiabetic drugs, such as metformin and gliclazide, have been examined for their potential impact on erectile dysfunction using a method called two-sample Mendelian randomization (TSMR).* -
  • The study found that both metformin and gliclazide significantly increased the risk of developing erectile dysfunction, while insulin usage did not show any significant causal link to this condition.* -
  • Overall, the results indicate that patients using metformin and gliclazide should be aware of the possible risk of erectile dysfunction, unlike those using insulin.*
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Colorectal cancer (CRC) is the most common gastrointestinal malignancy worldwide. The poor specificity and sensitivity of the fecal occult blood test has prompted the development of CRC-related genetic markers for CRC screening and treatment. Gene expression profiles in stool specimens are effective, sensitive and clinically applicable.

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We report a case of 57-year-old male patient with extensive scrotal idiopathic calcium salt deposits with multiple masses fused into a mass occupying 2/3 of the scrotal area. The scrotal mass was completely removed surgically and the postoperative pathology was consistent with idiopathic calcium deposits in the scrotum. In this article, we report this case of idiopathic calcium salt deposits in the scrotum and review the literature to provide some experience for clinical practitioners.

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Prostate cancer is a common clinical disease in men. It is known that prostate cancer ranks 3rd in the incidence of malignant tumors of the male genitourinary system in China, which is able to evaluate the riskiness of life expectancy of male patients. Therefore, we investigated the expression of CD133, recombinant human kallikrein 3 (Klk3), grainy head like 2 (grhl2) in prostate cancer, and correlation with tumor characteristics in the present study.

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Little is known about genes that induce stem cells differentiation into astrocytes. We previously described that heat shock protein 27 (HSP27) downregulation is directly related to neural differentiation under chemical induction in placenta-derived multipotent stem cells (PDMCs). Using this neural differentiation cell model, we cross-compared transcriptomic and proteomic data and selected 26 candidate genes with the same expression trends in both omics analyses.

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Stem cell-based therapy has been evaluated in many different clinical trials for various diseases. This capability was applied in various neurodegenerative diseases, such as multiple sclerosis, which is characterized by demyelination, axonal injury, and neuronal loss. Dental pulp stem cells (DPSCs) are mesenchymal stem cells from the oral cavity that have been studied with potential application for the regeneration of different tissues.

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Article Synopsis
  • The COVID-19 pandemic highlighted the issue of PM (particulate matter) pollution, especially during the lockdown in Guangzhou, where researchers analyzed its sources and influencing factors.
  • The lockdown significantly decreased PM concentrations due to reduced industrial and traffic emissions, although the relationship wasn't straightforward, with some periods showing unexpected trends.
  • Analysis found that while reduced emissions were key to lower PM levels, factors like long-distance transport and secondary pollution complicated the situation, emphasizing the need for targeted efforts to manage emissions better.
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Various pain conditions may be associated with depressed mood. However, the effect of inflammatory or neuropathic pain on depression-like behavior and its associated time frame has not been well established in rat models. This frontward study investigated the differences in pain behavior, depression-like behavior, and serotonin transporter (SERT) distribution in the brain between rats subjected to spared nerve injury (SNI)-induced neuropathic pain or complete Freund's adjuvant (CFA)-induced inflammatory pain.

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Background: Alzheimer's disease (AD) is a prevalent progressive neurodegenerative human disease whose cause remains unclear. Numerous initially highly hopeful anti-AD drugs based on the amyloid-β (Aβ) hypothesis of AD have failed recent late-phase tests. Natural aging (AG) is a high-risk factor for AD.

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To sustain gene delivery and elongate transgene expression, plasmid DNA and cationic nonviral vectors can be deposited through layer-by-layer (LbL) assembly to form polyelectrolyte multilayers (PEMs). Although these macromolecules can be released for transfection purposes, their entanglement only allows partial delivery. Therefore, how to efficiently deliver immobilized genes from PEMs remains a challenge.

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Dexmedetomidine, an α-2 adrenergic receptor agonist, provides analgesia, sedation, anxiolysis, sympatholysis and anesthetic-sparing effect, without inducing significant respiratory depression. Due to these properties, its clinical use is no longer limited to serving as a sedative agent in the intensive care unit. Proper airway management and the avoidance of cardiac and respiratory complications are common goals of everyday anesthesia practice.

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Objective: To compare the incidence of fiberoptic bronchoscope (FOB) use (1) during verification of initial placement and (2) for reconfirmation of correct placement following repositioning, when either a double-lumen tube (DLT) or video double-lumen tube (VDLT) was used for lung isolation during thoracic surgery.

Design: A randomized controlled study.

Setting: Single-center university teaching hospital.

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Background: Liver fibrosis is the response of liver diseases that puzzles patients. MiRNAs were involved in the regulating processes of liver fibrosis. This study aims to investigate the effects of ARRB1 mediated by miR-29a and miR-652 on liver fibrosis and its possible mechanism.

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Background: Calculus pyonephrosis is difficult to manage. The aim of this study is to explore the value of a patented suctioning sheath assisted minimally invasive percutaneous nephrolithotomy (MPCNL) in the treatment of calculus pyonephrosis.

Methods: One hundred and eighty two patients with calculus pyonephrosis were randomizely divided into observation group (n = 91) and control group (n = 91).

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Background: Flexible ureteroscopic lithotripsy (URS) is rapidly becoming a first-line therapy for patients with renal and ureteral calculi. Most current medical infusion devices can only monitor infusion flow and pressure, but not renal pelvic pressure (RPP).

Patients And Methods: We designed a patented intelligent system to facilitate flexible URS that included an irrigation and suctioning platform and a ureteral access sheath (UAS) with a pressure-sensitive tip, enabling regulation of the infusion flow precisely and control of the vacuum suctioning by computerized real-time recording and monitoring of RPP.

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Objective: To investigate the application of intelligent pressure control devices (medical irrigation and suctioning platform with pressure feedback function, and suctioning ureteral access sheath with pressure-measuring function) in flexible ureteroscopy for monitoring and control of renal pelvic pressure.

Materials And Methods: Nine pigs with a total of 18 kidneys were randomly divided into 3 groups according to varied renal perfusion flow rates: group A, 50 mL/min; group B, 100 mL/min; and group C, 150 mL/min. A ureteral catheter connected to an invasive blood pressure monitor was retrogradely placed to the upper renal calyx to measure upper calyceal pressure; the suctioning sheath was connected to a 3-channel tubing and was connected to an invasive blood pressure monitor; and the platform and renal pelvic outlet pressure was measured.

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Introduction: In order to better control renal pelvic pressure (RPP), reduce surgical complications and increase operative efficacy of minimally invasive percutaneous nephrolithotomy (MPCNL), we designed an MPCNL with intelligent monitoring and control of RPP and sought to explore its clinical efficacy and characteristics.

Subject And Methods: This study included 60 patients with renal staghorn calculi. A 5F ureteral catheter was connected to an invasive blood pressure monitor for monitoring and control of RPP.

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To describe a novel technique of transurethral seminal vesiculoscopy using a pediatric ureteroscope in the diagnosis and management of persistent hematospermia, a retrospective study was carried out for 20 patients with recurrent hematospermia whom we evaluated and treated using a 6-7.5F (6F front end and 7.5F rear end) pediatric ureteroscope from August 2009 to September 2013.

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Background: There are still disagreements on which is a better approach to choose to establish percutaneous tract for percutaneous nephrolitotomy (PCNL), between supracostal and infracostal approaches. The aim of this study is to investigate the safety, efficacy and practicability of minimally invasive PCNL (MPCNL) with the aid of a patented system either through supracostal or through infracostal access.

Methods: A retrospective study was carried out for 83 patients with renal or upper ureteral stones.

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Objective: To explore the efficacy and safety of vitamin D (VD) in the treatment of idiopathic oligoasthenozoospermia.

Methods: This study included 86 infertile men with idiopathic oligoasthenozoospermia, who were randomized to a VD and a control group of equal number, the former given oral VD 200 IU/d and calcium 600 mg/d,qd, while the latter administered oral vitamin E 100 mg and vitamin C 100 mg, tid. After 3 months of medication, we compared the semen parameters, adverse reactions, and pregnancy rate between the two groups.

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Objectives: Although high abundant cystatin c (CysC) in cerebrospinal fluid (CSF) is well known, its ambiguous role associated with pain still remains unclear. This study evaluated the effects of intrathecal CysC content from chronic pain caused by osteoarthritis (OA) and the novel relationship with matrix metalloproteinases 2 and 9 (MMP2 and MMP9) in CSF.

Methods: Samples of CSF were obtained from 8 elderly patients (65 y and above) with OA with lower limb pain for at least 6 months (OA group) and 8 sex-matched and age-matched relatively healthy elderly individuals without any pain problems (control group).

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To maintain the antibody activity and enhance performance of array-based immunoassays, protein G was used to allow a shorter duration of immunoglobulin G immobilization at 4 °C, with the antibody placed in the appropriate orientation. The multiplexed detection of six pain-related message molecules (PRMMs) was used as examples for the development of array-based immunoassays: substance P, calcitonin gene-related peptide, nerve growth factor, brain-derived neurotrophic factor, tumor necrosis factor-α, and β-endorphin. Protein G- and non-protein G-coated slides were tested.

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Objective: To determine an efficient method for treating upper ureteral impacted stones, we compared the outcome of minimally invasive percutaneous nephrolithotomy with the aid of our patented system and transurethral ureteroscopy.

Materials And Methods: A total of 182 patients with complicated impacted upper ureteral stones above the level of L4 were randomly divided into 2 groups. Group 1 included 91 patients who were treated with minimally invasive percutaneous nephrolithotomy with the aid of a patented system.

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Aims: Ultra-low dose naloxone has been shown to restore the antinociceptive effect of morphine in pertussis toxin (PTX)-treated rats by suppressing spinal microglia activation and inhibiting inflammatory cytokine expression. This study was further investigated the mechanism by which ultra-low dose naloxone promotes analgesia in pertussis toxin-treated rats.

Main Methods: Male Wistar rats were implanted with an intrathecal (i.

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Purpose: To investigate the clinical effect of minimally invasive percutaneous nephrolithotomy (MPCNL) using a patented irrigation and clearance system.

Patients And Methods: From August 2008 to August 2009, 60 patients with renal stones ≥2.0 cm were randomly assigned to two groups.

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