3,893 results match your criteria testicular volume

Proteomic analysis of pikeperch seminal plasma provides novel insight into the testicular development of domesticated fish stocks.

Animal 2021 Jun 11;15(7):100279. Epub 2021 Jun 11.

Department of Gametes and Embryo Biology, Institute of Animal Reproduction and Food Research, Polish Academy of Sciences, Tuwima 10, 10-748 Olsztyn, Poland.

Control of the reproduction of domesticated stocks is considered a prerequisite for aquaculture development of pikeperch. However, knowledge about the physiology of the captive pikeperch male reproductive system and the biology of semen is very limited, especially regarding protein characteristics. The aims of our study were to characterize pikeperch sperm quantity and quality parameters and to analyze changes in the proteome of the same males spawned for the first and second times. Read More

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Effects of Dietary Crude Glycerin Concentration on Testicular Morphology and Oxidative Stress Markers and on Plasma Testosterone Concentrations.

J Comp Pathol 2021 May 23;185:72-81. Epub 2021 May 23.

Department of Veterinary Medicine, Universidade Federal Rural de Pernambuco, Recife, , Brazil. Electronic address:

We evaluated the effects of feeding 6%, 12% or 18% crude glycerin, containing 80.5% glycerol, on testicular histomorphometry and markers of oxidative stress and on plasma testosterone concentrations in lambs. Body weight, testicular biometric measurements, gonadosomatic index and net weight of the testicles were higher for the treated groups (P <0. Read More

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Nonlinear Models to Describe the Testicular Size Growth Curve of Mangalarga Marchador Stallions.

J Equine Vet Sci 2021 Jul 19;102:103422. Epub 2021 Feb 19.

Department of Veterinary, Universidade Federal de Viçosa, Viçosa, MG, Brazil.

This study aimed to describe the testicular growth curve in Mangalarga Marchador stallions fitting nonlinear models to data of total scrotal width (TSW) and testicular volume (TV). A cross-sectional study was conducted with 120 stallions, aging from 1.75 to 21. Read More

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Predictors of varicocele-associated pain and its impact on semen parameters following microsurgical repair.

Andrologia 2021 Jun 12:e14121. Epub 2021 Jun 12.

Department of Urology, Center for Male Reproductive Medicine and Surgery, Weill Cornell Medicine, New York, NY, USA.

Our study aimed to assess for predictors of varicocele-associated pain and whether it predicts semen parameters after microsurgical varicocelectomy. We assessed all men diagnosed with a varicocele by two surgeons from 2017 to 2020, excluding those who did not undergo surgical treatment. Patients were stratified based on the presence of pain at clinical assessment, and these groups were compared. Read More

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Testicular shear wave elastography in oligo-astheno-teratozoospermic individuals: a prospective case-control study.

Int Urol Nephrol 2021 Jun 10. Epub 2021 Jun 10.

Andrology and Urogynecology Clinic, Santa Maria Terni Hospital, University of Perugia, Viale Tristano di Jannuccio 1 Terni, Perugia, Italy.

Purpose: The primary objective of this study was to evaluate the testicular stiffness by ultrasound shear wave elastography (SWE) both in men with oligo-astheno-teratozospermia (OAT) and in control group. The secondary objective was to identify a possible correlation between semen quality with testicular stiffness.

Methods: This was a prospective case-control study. Read More

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Identifying Patterns of Failure and Risk Factors for Recurrence in Patients of Paratesticular Sarcomas: Protocol of a Systematic Review and Meta-Analysis.

Int J Surg Protoc 2021 May 28;25(1):84-91. Epub 2021 May 28.

Department of Radiotherapy, All India Institute of Medical Sciences, New Delhi, IN.

Introduction: Para testicular sarcomas are rare mesenchymal tumors that affect patients of all ages. Unlike other sites of sarcoma, they tend to be of lower grade and have a higher propensity for lymphatic spread. Management is hampered by the small number of patients who differ in terms of tumor grade and histology. Read More

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Morphological characterization of blue-and-yellow macaw (Ara ararauna) seasonal testicular variations in captivity.

An Acad Bras Cienc 2021 4;93(2):e20190557. Epub 2021 Jun 4.

Universidade Federal de Goiás, Instituto de Ciências Biológicas, Departamento de Morfologia, Avenida Esperança, s/n, 74690-900 Goiânia, GO, Brazil.

The reproduction of monogamous wild birds in captivity it`s difficult and the apparent low fertility in males requires more investigations. The objective of the study was to test the hypothesis that wild bird species in captivity would present low reproductive potential, through the analysis of the morphological characteristics of Ara ararauna testicles, maintained in captivity, correlating them with the climate variations in the Cerrado Biome. For that, testicles were captured in April (dry) and October (rainy). Read More

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Central role of ultrasound in the evaluation of testicular function and genital tract obstruction in infertile males.

Andrology 2021 Jun 3. Epub 2021 Jun 3.

Unit of Andrology and Reproductive Medicine, Department of Medicine, University of Padova, Padova, Italy.

Background: Scrotal color Doppler ultrasonography and transrectal ultrasonography provide crucial information about the clinical status of testes and male accessory glands.

Objective: To analyze the impact of ultrasound in the evaluation of infertile males.

Materials And Methods: A total of 1120 records from infertile men were retrospectively evaluated (from January 2016 up to June 2020). Read More

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A better understanding of testicular and/or epididymal tuberculosis based on clinical, ultrasonic, computed tomography, and magnetic resonance imaging features at a high-volume institute in the modern era.

Quant Imaging Med Surg 2021 Jun;11(6):2465-2476

Department of Radiology, West China Hospital, Sichuan University, Chengdu, China.

Background: There is a concerning underdiagnosis of testicular and/or epididymal tuberculosis (TB). A lack of clinician awareness has led to many patients undergoing unnecessary surgeries. The purpose of this series was to enhance understanding of testicular and/or epididymal TB based on clinical, ultrasonic, computed tomography (CT), and magnetic resonance imaging (MRI) features from the past decade. Read More

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COVID-19 disrupts spermatogenesis through the oxidative stress pathway following induction of apoptosis.

Apoptosis 2021 Jun 2. Epub 2021 Jun 2.

Forensic Medicine Legal Medicine Research Center, Iranian Legal Medicine Organization, No. 2, Misaq Alley, Behesht St, District 12, Tehran, Iran.

To evaluate the incidence of apoptosis within the testes of patients who died from severe acute respiratory syndrome coronavirus 2 (COVID-19) complications, testis tissue was collected from autopsies of COVID-19 positive (n = 6) and negative men (n = 6). They were then taken for histopathological experiments, and RNA extraction, to examine the expression of angiotensin-converting enzyme 2 (ACE2), transmembrane protease, serine 2 (TMPRSS2), BAX, BCL2 and Caspase3 genes. Reactive oxygen species (ROS) production and glutathione disulfide (GSH) activity were also thoroughly examined. Read More

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The Effect of Single and Triple Testicular Biopsy Using Biopty Gun on Spermatogenesis in Pubertal Rats.

Animals (Basel) 2021 May 27;11(6). Epub 2021 May 27.

Department of Pediatric Surgery, University Hospital of Split, 21000 Split, Croatia.

Background: The aim of this study was to compare consequences in single and triple testicular biopsy by biopty gun in pubertal rats using histological and immunohistochemical analysis.

Methods: Thirty-two Sprague-Dawley male rats were used as the experimental model. The rats were randomly divided into three study groups. Read More

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Riboflavin recovery of spermatogenic dysfunction via a dual inhibition of oxidative changes and regulation of the PINK1-mediated pathway in arsenic-injured rat model.

A Olfati E Tvrda

Physiol Res 2021 Jun 1. Epub 2021 Jun 1.

Young Researchers and Elites Club, Kermanshah Branch, Islamic Azad University, Kermanshah, Iran.

Arsenic trioxide (As(2)O(3)) poisoning and associated potential lesions are of a global concern. Inversely, riboflavin (vitamin B2, VB2) as a component of flavoproteins could play a vital role in the spermatogenic enzymatic reactions. Thus, this research aimed to explore potential beneficial roles of VB2 during As(2)O(3)-injured-toxicity. Read More

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Evaluation of potential reproductive seasonality in brown brocket deer (Mazama gouazoubira) bucks.

Theriogenology 2021 Sep 20;171:104-112. Epub 2021 May 20.

Deer Research and Conservation Center (NUPECCE), School of Agricultural and Veterinary Studies (FCAV), São Paulo State University (UNESP), Jaboticabal, São Paulo, SP, Brazil. Electronic address:

Photoperiod is the main cue that controls seasonal reproduction in deer from temperate regions, like secretion of testosterone by the testis, neck enlargement, and testis development. However, little is known about its effect on the reproduction of tropical deer species. This research aimed to assess the potential seasonality of the brown brocket deer (Mazama gouazoubira) by melatonin treatment. Read More

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September 2021

Testicular Temperature and the Effects of Orchiopexy in Infants With Cryptorchidism.

J Urol 2021 May 25:101097JU0000000000001896. Epub 2021 May 25.

Department of Urology, Yamaguchi University School of Medicine, Ube, Yamaguchi, Japan.

Introduction And Objective: Testicular temperature should remain low to maintain optimal function of germ cells; however, information regarding testicular temperature in infants and the effect of cryptorchidism and its correction, including laparoscopic staged Fowler-Stephens orchiopexy (LSFSO), are limited.

Methods: Eighty-two infants with unilateral palpable cryptorchidism, 24 with nonpalpable testes who underwent unilateral LSFSO and 20 with scrotal hydrocele were included. Ultrasonographic determination of testicular volume and measurement of testicular temperature but not scrotal surface temperature using a Coretemp CTM204 (Terumo, Tokyo) were performed before and 12 months after orchiopexy. Read More

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Ultrasound evaluation of long-term outcome in boys operated on due to testicular torsion.

Medicine (Baltimore) 2021 May;100(21):e26057

The Department of Pediatric Surgery and Traumatology.

Abstract: We aimed at verifying the usefulness of spectral Doppler ultrasonography in determining development of the testis after torsion in boys.The study involved 28 patients and 30 control cases divided into 3 developmental groups: pre-pubertal, early pubertal, and pubertal. It presented surgical management in testicular torsion (TT), volume, and echogenicity of testes, as well as peak-systolic velocity (PSV), end-diastolic velocity (EDV), and vascular resistance index (RI) in the capsular and intra-testicular arteries, regarding developmental groups, detorsed testes, uninvolved ones, and testes in the control group. Read More

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Influence of a Maximal Incremental Test Until Exhaustion on the Urinary Excretion of Steroid Hormones in Trained Cyclists.

J Hum Kinet 2021 Mar 31;78:121-129. Epub 2021 Mar 31.

Department of Physiology, School of Sport Sciences, University of Extremadura, Extremadura Spain.

This study aimed to assess the effect of a maximum incremental stress test through urinary concentrations of steroid hormones in trained cyclists. Twenty male cyclists participated in the study (23.83 ± 2. Read More

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F-FDG PET/CT use in functional assessment of the testes: A systematic review.

Andrology 2021 May 21. Epub 2021 May 21.

Department of Urology, Guy's and St Thomas' NHS Trust, London, UK.

Introduction: Our study analysed previous studies employing positron emission tomography with co-registered computer tomography (PET/CT) in andrological patient evaluation and assessed the differences in 2-[ F]F-fluoro-2'-deoxyglucose (FDG) uptake between three groups: healthy testes, benign and malignant testicular pathology.

Methods: Medline and Embase were systematically searched for studies involving FDG-PET/CT imaging of testes with results expressed as mean standardised uptake value (SUV ). A one-way ANOVA was used to compare SUV between three groups. Read More

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Reproductive hormone concentrations and associated anatomical responses: does soy formula affect minipuberty in boys?

J Clin Endocrinol Metab 2021 May 20. Epub 2021 May 20.

Biostatistics and Computational Biology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, Research Triangle Park, NC.

Context: Soy formula feeding is common in infancy and is a source of high exposure to phytoestrogens, documented to influence vaginal cytology in female infants. Its influence on minipuberty in males has not been established.

Objective: To assess the association between infant feeding practice and longitudinally measured reproductive hormones and hormone-responsive tissues in infant boys. Read More

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A prediction model for risk factors of testicular atrophy after orchiopexy in children with undescended testis.

Transl Pediatr 2021 Apr;10(4):882-892

Department of Urology, The Third Affiliated Hospital, Southern Medical University, Guangzhou, China.

Background: There have been limited studies with small sample sizes about risk factors of testicular atrophy. Thus, we aimed to investigate the risk factors for testicular atrophy after orchiopexy in male children with undescended testes and develop a prediction model based on clinical variables.

Methods: We performed a retrospective review of data on children who underwent orchiopexy for undescended testes from 2013 to 2017. Read More

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[Cystic fibrosis being a polyendocrine disease (Review)].

Probl Endokrinol (Mosk) 2021 Mar 30;67(2):28-39. Epub 2021 Mar 30.

Stavropol Regional Clinical Consultative and Diagnostic Center.

The cystic fibrosis transmembrane regulator (CFTR) gene encodes the synthesis of a protein of the same name, which functions as a direct activator of anionic transport. Chloride is the most abundant anion; as an antagonist of Na+ and K+, it provides electroneutrality of cell membranes at rest; together with cations, it serves as an important osmolyte and forms water flow across cell membranes for transepithelial secretion.Glandular cells in CF trap Cl- and Na+, and the prodused secretion is excessively viscous. Read More

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Daily Sperm Output, Spermatogenic Efficiency, and Sexual Behavior of Dezhou Donkey Jacks Mounting Jennies in Estrus.

J Equine Vet Sci 2021 Jun 19;101:103420. Epub 2021 Feb 19.

Department of Veterinary Clinical Medicine, College of Veterinary Medicine, University of Illinois Urbana, Champaign, IL. Electronic address:

This study aimed to assess the sexual behavior of jacks mounting jennies in estrus and determine the daily sperm output (DSO) and spermatogenic efficiency using two equations to calculate testicular volume (TV). Eight sexually rested mature jacks, aging 5 to 10 years old, had semen collected once a day for 10 consecutive days using jennies in good standing estrus for mounting. Sexual behavior and semen parameters were assessed during each collection. Read More

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Testicular Sperm Aspiration (TESA) or Microdissection Testicular Sperm Extraction (Micro-tese): Which Approach is better in Men with Cryptozoospermia and Severe Oligozoospermia?

Urology 2021 May 13. Epub 2021 May 13.

Division of Urology, Department of Surgery, McGill University, Montreal, Canada; OVO Fertility Clinic, Montreal, Canada. Electronic address:

Objectives: To evaluate and compare sperm retrieval outcomes by testicular sperm aspiration (TESA) and micro-dissection testicular sperm extraction (micro-TESE) in non-azoospermic men.

Methods: We conducted a retrospective study of 145 consecutive testicular sperm retrievals in men with cryptozoospermia (n = 56) or severe oligozoospermia (n = 84). The decision to perform a TESA or a micro-TESE was made after thorough discussion of the pros and cons of these procedures with the couple. Read More

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Comparison of Clinical Characteristics and Spermatogenesis in CHH Patients Caused by PROKR2 and FGFR1 Mutations.

Reprod Sci 2021 May 13. Epub 2021 May 13.

Department of Endocrinology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, 100730, China.

A retrospective study was conducted to investigate the effect of gonadotropin or pulsatile gonadotropin-releasing hormone (GnRH) therapy on spermatogenesis in congenital hypogonadotropic hypogonadism (CHH) patients with PROKR2 (prokineticin receptor 2) or FGFR1 (fibroblast growth factor receptor 1) mutations. Clinical features, gonadotropin levels, testicular volume (TV), and sperm concentration in response to gonadotropin and pulsatile GnRH therapy were compared between groups with PROKR2 and FGFR1 mutations. Twelve patients with PROKR2 gene mutation and fourteen patients with FGFR1 gene mutation were included. Read More

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The efficacy of pulsatile gonadotropin-releasing hormone therapy in male patients with hypogonadism caused by hypopituitarism.

Ann Palliat Med 2021 Apr;10(4):4642-4651

Department of Endocrinology, Medical School of Chinese People's Liberation Army, The First Medical Center of Chinese People's Liberation Army General Hospital, Beijing, China.

Background: To evaluate the efficacy of pulsatile gonadotropin-releasing hormone (GnRH) therapy in patients with hypogonadism caused by hypopituitarism so as to guide clinical treatment.

Methods: Clinical manifestations, laboratory examinations, and imaging features were collected from 22 patients with hypopituitarism that led to hypogonadism who were treated with pulsatile GnRH. Data were analyzed and the patients were followed up. Read More

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Repeated assessment of changes in testes size in canaries by X-ray computer tomography.

Gen Comp Endocrinol 2021 May 6;310:113808. Epub 2021 May 6.

GIGA Neurosciences, University of Liège, Belgium. Electronic address:

Numerous studies have evaluated changes in time of testicular development in birds by exploratory laparotomy or post-mortem autopsy. The invasive nature of these approaches has obviously limited the frequency at which these measures can be collected. We demonstrate here that accurate assessment of gonadal size can be reliably and repeatedly obtained by computer-assisted X-ray tomography (CT scans). Read More

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Supplementation of the diets with hydroponic maize fodder affects digestibility, puberty, sexual behavior, and semen characteristics in buck kids.

Trop Anim Health Prod 2021 May 8;53(2):310. Epub 2021 May 8.

Livestock Farm Complex, Tamil Nadu Veterinary and Animal Sciences University, Chennai, Tamil Nadu, 600 051, India.

Hydroponics is one of the widely adopted technologies for fodder production in arid and semi-arid regions. In addition to the benefits such as shorter growth period and minimal water and land use, it also produces nutritious fodder that contains essential nutrients required for the growth and reproduction of livestock. This study was conducted to evaluate the effect of feeding hydroponic maize fodder on the reproductive performance of buck kids. Read More

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Downregulation of testicular function in the goat by altrenogest.

BMC Vet Res 2021 May 4;17(1):183. Epub 2021 May 4.

Clinic of Obstetrics, Gynecology, and Andrology of Large and Small Animals with Ambulatory Service, Justus Liebig University Giessen, Frankfurter Strasse 106, 35392, Giessen, Germany.

Background: The present study investigated whether the administration of the progestin altrenogest provides noninvasive, temporary, and reversible suppression of gonadal function in the goat as a potential alternative to chirurgical castration, which is related with irreversibility, risks of complications till death of the animal and welfare issues. Eight sexually mature Peacock goats were randomly divided into two groups. The experimental group was administered altrenogest (0. Read More

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Penile circumference and stretched penile length in prepubertal children: A retrospective, single-center pilot study.

Investig Clin Urol 2021 May;62(3):324-330

Department of Urology, Pusan National University Yangsan Hospital, Yangsan, Korea.

Purpose: To determine references for penile circumference according to age in prepubertal children and whether this measurement can be used as a basic penile parameter along with stretched penile length in prepubertal children.

Materials And Methods: A total of 750 children (mean age, 4.2±3. Read More

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Testicular shape, scrotal skin thickness and testicular artery blood flow changes in bulls of different ages.

Reprod Domest Anim 2021 May 1. Epub 2021 May 1.

Deparment of Animal Science, State University of Londrina, Londrina, Paraná, Brazil.

The aim of this study was to compare the biometric testicular characteristics, skin thickness and haemodynamics of the testicular artery of 12- and 24-month-old bulls using Doppler ultrasonography, the study was conducted using 48 indicus-taurus animals. The scrotal circumference (SC) and biometry characteristics of the bulls were measured to calculate the testicular volume. Doppler ultrasonography was used to obtain the haemodynamic values of the testicular artery. Read More

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