Back to Authors

Lozoya, Andres Guillen

0000-0001-7186-164X

Mayo Clinic

Mayo Clinic

Citations 4

Anabolic androgenic steroid content on social media: reliability, engagement, and public health implications
Lozoya, Andres H Guillen, Hashemi, Milad Bonakdar , Cerda, Brenda Bolanos, Ziegelmann, Matthew J, Köhler, Tobias S, Lozoya, Andres Guillen , Bonakdar Hashemi, Milad, Helo, Sevann , Ziegelmann, Matthew J.

The Journal of Sexual Medicine | April 16, 2026 | Volume: 23 | Issue: 5 | Pages: No page available

10.1093/jsxmed/qdag126 Get It

Ceramide test in patients with erectile dysfunction to assess cardiovascular risk
Guillén-Lozoya, A.H. , Dumbrava, Mihai, Bonakdarhashemi, Milad, Kemble, Jayson , Ziegelmann, Matthew , Vasile, Vlad C. , Kopecky, Stephen L. , Köhler, Tobias , Lozoya, Andres Guillen , Helo, Sevann , Collins, Scott, Vasile, Vlad , Kopecky, Stephen, Collins, Scott

The Journal of Sexual Medicine | October 5, 2025 | Volume: 22 | Issue: 10 | Pages: 1750-1756

10.1093/jsxmed/qdaf182 Get It

Abstract Background Erectile dysfunction (ED) is a known precursor and sequela of cardiovascular disease (CVD), with ED severity predicting CVD severity. Aim This study aimed to evaluate the utility of ceramide levels in patients with ED. Methods We initiated ceramide testing in all patients with ED. We retrospectively analyzed ceramide levels from electronic records and stratified by severity of symptoms using the erectile function domain of the International Index of Erectile Function (IIEF). Outcomes The study aimed to determine whether abnormal ceramide levels were associated with ED severity and increased cardiovascular risk. Results Three hundred and fifty-four patients were reviewed, of whom 253 (71.5%) had moderate or higher ED. A statistically significant difference in abnormal ceramide values was found in patients with moderate to severe symptoms, and the odds of getting an abnormal ceramide test were increased based on the IIEF scoring alone (odds ratio [OR] 2.3 [1.04-5.12]; P-value = .034). Clinical Implications Serum ceramide testing could be beneficial in identifying cardiovascular risk in men with ED, potentially prompting cardiac referrals and lifestyle modifications. Strengths and Limitations The strengths of this study include a large sample size and the use of a well-established scale, while the limitations include the retrospective nature of the study and the need for further research to validate the findings. Conclusion Patients undergoing management for ED may benefit from serum ceramide testing and subsequent cardiac referral.
Outcomes following discontinuation of chlorhexidine gluconate in inflatable penile prosthesis surgery: a return to antibiotics for irrigation and dip
Hashemi, Milad Bonakdar , Guillén-Lozoya, A.H. , Ziegelmann, Matthew , Köhler, Tobias S. , Bonakdar Hashemi, Milad, Helo, Sevann , Lozoya, Andres Guillen , Ziegelmann, Matthew J

The Journal of Sexual Medicine | August 26, 2025 | Volume: 22 | Issue: 11 | Pages: 2134-2135

10.1093/jsxmed/qdaf223 Get It

What is the right approach for Peyronie’s disease surgery? Comparing postoperative wound complications between ventral and subcoronal incisions with penile straightening surgery
Seyer, A, Piraino, Javier , Guillén-Lozoya, A.H. , Ziegelmann, M., Seyer, Amanda, Lozoya, Andres Guillen

The Journal of Sexual Medicine | August 25, 2025 | Volume: 22 | Issue: 10 | Pages: 1863-1870

10.1093/jsxmed/qdaf189 Get It

Abstract Background Multiple guideline-based surgical treatment options for Peyronie’s disease (PD) exist, including penile plication and plaque incision or excision and grafting. Surgical incision type may differ depending upon location and severity of curve, planned concomitant procedures, and surgeon preference. Aim To evaluate postoperative wound complications comparing outcomes between ventral and subcoronal incisions in patients undergoing tunica albuginea plication (TAP) and plaque incision or partial excision and grafting (PG) for PD. Methods A single-surgeon, single-center retrospective chart review was conducted on all patients undergoing TAP or PG from 2019 to 2023. Patient demographics, including previous PD treatments, were recorded. A Mann–Whitney U test was utilized to determine differences in wound complication rate, median curvature improvement, and remaining postoperative curvature between ventral and subcoronal approaches. Outcomes Wound complication was classified as any dehiscence and/or wound exudate suspicious for infection within the first 3 months postoperatively. A secondary analysis was performed comparing these outcomes between TAP and PG. Results In the analysis, 189 patients were included, including PD straightening surgery, including 125 patients who underwent TAP (66%) and 64 patients (34%) who underwent PG. Among all cases, 49.7% underwent ventral incision (N = 94) and 50.3% (N = 95) underwent subcoronal incision. A total of 12 patients (6.3%) experienced a wound-related complication postoperatively (range 3-23 days), including 9/94 (9.6%) in the ventral incision cohort and 3/95 (3.2%) in the subcoronal cohort (P = 0.081). All the patients were treated with oral antibiotics and two patients required closure under local anesthesia (both in the ventral incision cohort). Secondary analysis did not reveal any significant difference in outcomes between TAP and PG cohorts with respect to wound complications. Clinical Implications While we did not identify a statistically significant difference, most of our wound complications, including infection and/or dehiscence, were seen in those undergoing a ventral penile raphe incision. Despite this, the rate of wound complications with either incisional approach as low. Strengths and Limitations Our report represents a large cohort of patients treated with surgical straightening for PD, and to our knowledge is one of the first to compare wound complications between ventral and subcoronal incisions. Limitations include the retrospective single-surgeon series without randomization, lack of power analysis, and heterogenous classification of wound complications. Conclusion Both ventral penile raphe and subcoronal (degloving) incisions can be considered for penile straightening procedures to correct PD curvature deformity with a low risk for serious wound-related complications.