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DNA fragmentation in two cytometric sperm populations： relationship with clinical and ultrasound characteristics of the male genital tract

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Asian Journal of Andrology 2017年第3期19卷 272-279页

作者： Francesco Lotti Lara Tamburrino Sara Marchiani Elisa Maseroli Pasquale Vitale gianni forti Monica Muratori Mario Maggi Elisabetta Baldi Sexual Medicine and Andrology Unit Department of Experimental and Clinical Biomedical Sciences Center of Excellence DeNothe University of FlorenceViale Pieraccini 6 1-50036 Florence Italy.

We investigated whether DNA fragmentation in two cytometric sperm populations （PIddimmer and PIbriehter） with different biological characteristics and clinical relevance is related to clinical and color-Doppler ultrasound （CDUS） parameters of the male genital tract. One hundred and sixty males of infertile couples without genetic abnormalities were evaluated for clinical, scrotal, and transrectal CDUS characteristics, presence of prostatitis-like symptoms （with the National Institutes of Health-Chronic Prostatitis Symptom Index） and sperm DNA fragmentation （sDF） in PIdimmer and PIbrighter populations （using TUNEIJPI method coupled with flow cytometry）. Data were adjusted for age （Model 1） along with waistline, testosterone levels, smoking habit, and sexual abstinence （Model 2）. According to the statistical Model 2, PIdi sDF was associated with testicular abnormalities, including lower clinical and ultrasound volume （r = -0.21 and r = -0.20, respectively; P 〈 0.05）, higher FSH levels （r = 0.34, P 〈 0.0001） and occurrence of testicular inhomogeneity （P 〈 0.05） and hypoechogenicity （P 〈 0.05）. PIbrighter sDF was associated with prostate-related symptoms and abnormal signs, including higher NIH-CPSI total and subdomain scores, a higher prevalence of prostatitis-like symptoms and of CDUS alterations such as macro-calcifications, severe echo-texture inhomogeneity, hyperemia （all P 〈 0.05）, and higher arterial peak systolic velocity （r = 0.25, P 〈 0.05）. Our results suggest that DNA fragmentation in PIdimmer sperm, which is related to poor semen quality, mainly originates in the testicles, likely due to apoptosis. Conversely, DNA fragmentation in PIbrighter sperm appears to mainly originate during or after transit through the prostate, increasing with the presence of an inflammatory status of the organ. These results could lead to new perspectives for the identification of therapeutic targets to reduce sDF.

关键词： color-Doppler ultrasonography DNA fragmentation male infertility male sex organs spermatozoa

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Metabolic syndrome and prostate abnormalities in male subjects of infertile couples

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Asian Journal of Andrology 2014年第2期16卷 295-304,I0011页

作者： Francesco Lotti Giovanni Corona Linda Vignozzi Matteo Rossi Elisa Maseroli Sarah Cipriani Mauro Gacci gianni forti Mario Maggi Sexual Medicine and Andrology Unit Department of Experimental and Clinical Biomedical Sciences University of Florence Florence Endocrinology Unit Maggiore-Bellaria Hospital Bologna Department of Urology Careggi Hospital University of Florence Florence Italy

No previous study has evaluated systematically the relationship between metabolic syndrome （MetS） and prostate-related symptoms and signs in young infertile men. We studied 171 （36.5 ±8.3-years-old） males of infertile couples. MetS was defined based on the National Cholesterol Education Program Third Adult Treatment Panel. All men underwent hormonal （including total testosterone （TT） and insulin）, seminal （including interleukin-8 （IL-8）, seminal plasma IL-8 （sIL-8））, scrotal and transrectal ultrasound evaluations. Because we have previously assessed correlations between MetS and scrotal parameters in a larger cohort of infertile men, here, we focused on transrectal features. Prostate-related symptoms were assessed using the National Institutes of Health Chronic Prostatitis Symptom Index （NIH-CPSI） and the International Prostate Symptom Score （IPSS）. Twenty-two subjects fulfilled MetS criteria. In an age-adjusted logistic ordinal model, insulin levels increased as a function of MetS components （Wald = 29.5, P〈 0.0001） and showed an inverse correlation with TT （adjusted r = -0.359, P 〈 0.0001）. No association between MetS and NIH-CPSI or IPSS scores was observed. In an age-, TT-, insulin-adjusted logistic ordinal model, an increase in number of MetS components correlated negatively with normal sperm morphology （Wald -- 5.59, P〈 0.02） and positively with slL-8 levels （Wald = 4.32, P〈 0.05）, which is a marker of prostate inflammation, with prostate total and transitional zone volume assessed using ultrasound （Wald = 17.6 and 12.5, both P〈 0.0001）, with arterial peak systolic velocity （Wald = 9.57, P= 0.002）, with texture nonhomogeneity （hazard ratio （HR） = 1.87 （1.05-3.33）, P 〈 0.05）, with calcification size （Wald = 3.11, P 〈 0.05）, but not with parameters of seminal vesicle size or function. In conclusion, in males of infertile couples, MetS is positively associated with prostate enlargement, biochemical （slL8） and ultrasound-derived signs of prostate inflammation but

关键词： infertile men interleukin-8 metabolic syndrome prostate-related symptoms and sisns semen analysis transrectal ultrasound

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Clinical correlates of enlarged prostate size in subjects with sexual dysfunction

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Asian Journal of Andrology 2014年第5期16卷 767-773,I0011页

作者： Giovanni Corona Mauro Gacci Elisa Maseroli Giulia Rastrelli Linda Vignozzi Alessandra Sforza gianni forti Edoardo Mannucci Mario Maggi Endocrinology Unit Maggiore-Bellaria Hospital Medical Department Azienda-Usl Bologna Bologna Italy Department of Urology Sexual Medicine and Andrology Unit Department of Clinical Physiopathology Endocrinology Unit Department of Clinical Physiopathology University of Florence Florence Italy Diabetes Agency Careggi Hospital Florence Italy

Digito-rectal examination （DRE） of the prostate provides useful information on the state of prostate growth and on the presence of suspected peripheral nodules. The aim of this study is to describe the clinical and biochemical correlates of finding an enlarged prostate size at DRE in subjects with sexual dysfunction （SD）. A consecutive series of 2379 patients was retrospectively studied. The analysis was focused on a subset of subjects （n = 1823; mean age 54.7± 11.4） selected for being free from overt prostatic diseases. Several parameters were investigated. After adjusting for confounders, the presence of an enlarged prostate size at DRE was associated with a higher risk of metabolic syndrome （HR = 1.346 （1,129-1.759）; P = 0.030）, type 2 diabetes mellitus （HR = 1.489 （1.120-1.980）; P = 0.006）, increased LDL cholesterol （〉100mgdl^-1; HR = 1.354 （1.018-1.801）; P = 0.037） and increased mean blood pressure （BP） values （HR = 1.017 （1.007-1.027） for each mmHg increment; P = 0.001）. Accordingly, enlarged prostate size was also associated with a higher risk of arteriogenic erectile dysfunction （ED）, as well as with other andrological conditions, such as varicocele and premature ejaculation （PE）. PSA levels were significantly higher in subjects with enlarged prostate size when compared to the rest of the sample （HR = 3.318 （2.304; 4.799） for each log unit increment in PSA levels; P 〈 0.0001）. Arteriogenic ED, according to different criteria, was also associated with increased PSA levels. In conclusion, our data support the need to examine prostate size either by clinical （DRE） or biochemical （PSA） inspection in subjects with SD, in order to have insights into the nature of the SD and the metabolic and cardiovascular （CV） background of the patient.

关键词： benign prostatic hyperplasia metabolic syndrome enlarged prostate size testosterone

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Mechanisms and clinical correlates of sperm D damage

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Asian Journal of Andrology 2012年第1期14卷 24-31,174页

作者： Lara Tamburrino Sara Marchiani Margarita Montoya Francesco Elia Marino Ilaria Natali Marta Cambi gianni forti Elisabetta Baldi Monica Muratori Department of Clinical Physiopathology Andrology Unit and Center of Excellence ＇DeNothe＇ University of Florence 650139 Florence Italy

Among the different DNA anomalies that can be present in the male gamete, DNA fragmentation is the most frequent, particularly in infertile subjects. There is now consistent evidence that a sperm containing fragmented DNA can be alive, motile, morphologically normal and able to fertilize an oocyte. There is also evidence that the oocyte is able to repair DNA damage; however, the extent of this repair depends on the type of DNA damage present in the sperm, as well as on the quality of the oocyte. Thus, it is important to understand the possible consequences of sperm DNA fragmentation （SDF） for embryo development, implantation, pregnancy outcome and the health of progeny conceived, both naturally and by assisted reproductive technology （ART）. At present, data on the consequences of SDF for reproduction are scarce and, in many ways, inconsistent. The differences in study conclusions might result from the different methods used to detect SDF, the study design and the inclusion criteria. Consequently, it is difficult to decide whether SDF testing should be carried out in fertility assessment and ART. It is clear that there is an urgent need for the standardisation of the methods and for additional clinical studies on the impact of SDF on ART outcomes.

关键词： assisted reproduction COMET DNA fragmentation ICSI in vitrofertilization-embryo transfer sperm chromatin structure assay spermatozoa TUNEL

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Identification,Localization and Function in vitro and in vivo Activity of Oxytocin Receptor in the Rat Penis

Identification,Localization and Function in vitro and in viv...

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中华医学会第五次全国男科学学术会议

作者：张新华莫曾南 Sanara Filippi Linda Vignozzi Rosa Mancina Michaela Luconi Mirca Marini Gabriella Barbara Vannelli gianni forti Mario Maggi 广西医科大学泌尿外科研究所 Andrology Unit Department of Clinical PhysiopathologyDepartment of AnatomyHistology and Forensic MedicineUniversity of FlorenceFlorence 50139Italy

Purpose: We recently found that oxytocin receptor (OTR) is expressed by the human and rabbit corpus cavernosum (CC) and mediates contractility in vitro . In the present study we extended our investigation to rats, and explored whether OTR regulates penile detu-mescence in vivo. Materials and Methods: OTR was original identified ( l25I-OTR binding and Western - blot) , characterized (in vitro contractility) and immunolocalized (immunohistochemistry ) in the rat penis . The effect of intracavernous injection (ICI) of oxytocin (OT) on intracavernous pressure (ICP) increase induced by electro-stimulation of the cavernous nerve and papaverine was also

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