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https://www.readbyqxmd.com/read/28915951/male-contraception-prospects-for-sound-and-ultrasound
#1
Robert Sewak, Bettina Teng, Lee A Learman, Charles H Hennekens
The worldwide human population growth rate, which doubled during the 20th century, as well as the increasing fertility rate, have contributed to an increasing and evolving emphasis on contraception. With respect to female contraceptive methods, many have been developed, marketed, and are widely available. In contrast, male contraception has been limited to condoms, which pose logistical challenges, and vasectomy, which is largely irreversible. The use of sound to achieve effective and safe male contraception is a promising but unproven hypothesis...
September 2017: Medical Hypotheses
https://www.readbyqxmd.com/read/28915245/effects-of-gnrh-vaccination-in-wild-and-captive-african-elephant-bulls-loxodonta-africana-on-reproductive-organs-and-semen-quality
#2
Imke Lueders, Debbie Young, Liana Maree, Gerhard van der Horst, Ilse Luther, Stephan Botha, Brendan Tindall, Geoffrey Fosgate, André Ganswindt, Henk J Bertschinger
OBJECTIVES: Although the African elephant (Loxodonta africana) is classified as endangered by the International Union for Conservation of Nature (IUCN), in some isolated habitats in southern Africa, contraception is of major interest due to local overpopulation. GnRH vaccination has been promoted as a non-invasive contraceptive measure for population management of overabundant wildlife. We tested the efficacy of this treatment for fertility control in elephant bulls. METHODS: In total, 17 male African elephants that were treated with a GnRH vaccine were examined in two groups...
2017: PloS One
https://www.readbyqxmd.com/read/28905938/triptolide-induces-sertoli-cell-apoptosis-in-mice-via-ros-jnk-dependent-activation-of-the-mitochondrial-pathway-and-inhibition-of-nrf2-mediated-antioxidant-response
#3
Yu Wang, Su-Han Guo, Xue-Jun Shang, Li-Sha Yu, Jian-Wei Zhu, Ang Zhao, Yan-Fen Zhou, Guo-Hua An, Qi Zhang, Bo Ma
Triptolide (TP), an oxygenated diterpene, has a variety of beneficial pharmacodynamic activities but its clinical applications are restricted due to severe testicular injury. This study aimed to delineate the molecular mechanisms of TP-induced testicular injury in vitro and in vivo. TP (5-50000 nmol/L) dose-dependently decreased the viability of TM4 Sertoli cells with an IC50 value of 669.5-269.45 nmol/L at 24 h. TP (125, 250, and 500 nmol/L) dose-dependently increased the accumulation of ROS, the phosphorylation of JNK, mitochondrial dysfunction and activation of the intrinsic apoptosis pathway in TM4 cells...
September 14, 2017: Acta Pharmacologica Sinica
https://www.readbyqxmd.com/read/28893661/effect-of-castration-on-social-behavior-and-hormones-in-male-japanese-macaques-macaca-fuscata
#4
Rafaela S C Takeshita, Michael A Huffman, Kodzue Kinoshita, Fred B Bercovitch
Population control is essential for animal welfare and human safety in free-ranging or captive settings, especially when resources are limited. As an alternative to lethal control, contraceptive methods such as castration in males can be a practical solution, because the testicles are a visual cue to determine which males have been sterilized. However, careful analyses should be carried out to ensure no disruption in the social structure of the population. Japanese macaques (Macaca fuscata) live in a society centered around dominance rank and matrilineal kin relationships...
September 8, 2017: Physiology & Behavior
https://www.readbyqxmd.com/read/28880056/ultrasound-and-ultrasound-related-techniques-in-endocrine-diseases
#5
Pierpaolo Trimboli, Christoph F Dietrich, Emanuele David, Giampiero Mastroeni, Orazio Ventura Spagnolo, Paul S Sidhu, Claudio Letizia, Daniela Messineo, Ferdinando D'Ambrosio, Maija Radzina, Vito Cantisani
Ultrasound examination has become essential to evaluate morphology and size of several endocrine glands and detect the presence of lesions within these organs. Nevertheless, with the recent advances of ultrasound technology, we have opportunity to correlate the echostructure of thyroid, ovary, testis, parathyroids, etc. to their function. Thus, the ultrasound systems are in-office essential instruments for many clinical specialists. Herein we presented the most updated information about the use of ultrasound in specific endocrine-related issues, such as thyroid, parathyroid, adrenal gland, and testicle...
September 5, 2017: Minerva Endocrinologica
https://www.readbyqxmd.com/read/28853818/spermatozoa-retrieval-for-cryopreservation-after-death
#6
Fernando Lorenzini, Eduardo Zanchet, Gustavo M Paul, Ricardo T Beck, Mariana S Lorenzini, Elisângela Böhme
OBJECTIVES: To describe the retrieval spermatozoa technique for cryopreservation after death, including the proximal part of vas deferens. MATERIAL AND METHODS: A 28-years old man, with previous history of infertility, who died 12 hours ago, was submitted to spermatozoa retrieval for cryopreservation, with surgical bilateral resection in bloc of the proximal part of vas deferens, testicle and epididymis. At the laboratory, by milking the epididymis and vas deferens, the extracted fluid was collected; also, three samples of each testicle parenchyma were also harvested...
August 30, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28853109/impact-of-four-week-swimming-exercise-with-alpha-tocopherol-supplementation-on-fertility-potential-in-healthy-rats
#7
Abolfazl Kalantari, Abbas Saremi, Nader Shavandi, Ali Foroutan Nia
PURPOSE: The aim of this study was to evaluate the effect of 4 week intensive swimming exercise and alpha-tocopherol supplementation on testicular oxidative stress and spermatogenesis in rats. MATERIALS AND METHODS: 40 male rats were randomly assigned to Control (C), Sham (S), Exercise (E) and Exercise + supplement (ES) groups. Exercise training performed for 4 weeks (1session/day, 6days/week). Each session included 180 minutes of swimming. In ES group, alpha-ocopherol was injected at a dose of 50 mg/kg/day...
August 29, 2017: Urology Journal
https://www.readbyqxmd.com/read/28852466/an-omental-fibroma-resembling-a-testicular-tumour-but-presented-as-an-irreducible-inguinal-hernia
#8
Phong Jhiew Khoo, Stephen Jacob
We present a case of omental fibroma, which posed a surgical diagnostic dilemma. Primary tumours of the omentum are uncommon, and omental fibromas account for 2% of these. The rarity of omental fibroma and paucity of available information hamper an accurate diagnosis. In this particular case, the diagnostic process was misleading. The history was classical of an irreducible inguinal hernia, but the physical examination and imaging studies were suggestive of a testicular tumour. However, intraoperatively, an omental tumour and a normal testicle were found in the scrotum...
August 2017: Journal of Surgical Case Reports
https://www.readbyqxmd.com/read/28840738/-primary-testicular-lymphoma
#9
Monika Motyčková, Vladimíra Vosáhlová, David Belada, Martin Šimkovič, Pavel Žák
Primary testicular lymphoma (PTL) is a rare form of extranodal lymphoma and accounts for approximately 1 to 2 % of all non-Hodgkins lymphoma and 5 % of testicular malignancies. PTL typically affects patients older than 60 years. The most common clinical symptom is painless scrotal swelling. The ultrasound of testicles followed by orchiectomy and histological and imunohistochemical examinations are the most important tools for diagnostic assessment. Diffuse large B cell lymphoma (DLBCL) is the most common histological type of PTL...
2017: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/28837160/loss-of-function-mutations-in-tdrd7-lead-to-a-rare-novel-syndrome-combining-congenital-cataract-and-nonobstructive-azoospermia-in-humans
#10
Yue-Qiu Tan, Chaofeng Tu, Lanlan Meng, Shimin Yuan, Calvin Sjaarda, Aixiang Luo, Juan Du, Wen Li, Fei Gong, Changgao Zhong, Han-Xiang Deng, Guangxiu Lu, Ping Liang, Ge Lin
PurposeComorbid familial nonobstructive azoospermia (NOA) and congenital cataract (CC) have not been reported previously, and no single human gene has been associated with both diseases in humans. Our purpose was to uncover novel human mutations and genes causing familial NOA and CC.MethodsWe performed whole-exome sequencing for two brothers with both NOA and CC from a consanguineous family. Mutation screening of TDRD7 was performed in another similar consanguineous family and 176 patients with azoospermia or CC alone and 520 healthy controls...
August 24, 2017: Genetics in Medicine: Official Journal of the American College of Medical Genetics
https://www.readbyqxmd.com/read/28837026/a-comparison-between-a-new-vitrification-protocol-and-the-slow-freezing-method-in-the-cryopreservation-of-prepubertal-testicular-tissue
#11
Moacir R M Radaelli, Carlos G Almodin, Vânia C Minguetti-Câmara, Paula Motta Almodin Cerialli, Aissar E Nassif, Antonio J Gonçalves
OBJECTIVE: This study aimed to compare a new vitrification protocol with reduced cryoprotectant exposure to the slow freezing method in the cryopreservation of prepubertal rat testicular tissue. METHODS: Five sexually immature male Wistar rats were submitted to bilateral orchiectomy. Tissue samples from each testicle were fragmented into small pieces and randomly assigned to three groups: Group A, fresh tissue (control); Group B, slow programmable freezing (SPF); and Group C (vitrification)...
September 1, 2017: JBRA Assisted Reproduction
https://www.readbyqxmd.com/read/28835934/causes-of-infertility-in-view-of-iranian-traditional-medicine-a-review
#12
REVIEW
Seyed Kazem Kazemeini, Majid Emtiazy, Fatemeh Owlia, Parisa Khani
Infertility is one of the most important reproductive health concerns in the conventional medicine. Iranian traditional medicine presents different viewpoints in this regard which they could be of benefit and a good guide for the society of medicine. This study sought to provide the comprehensive investigation on the causes of infertility according to Iranian traditional medicine for understanding of old sages' ideas and categorizing of the causes of infertility. In this narrative review, we searched causes of infertility in traditional medicine books and available articles in this field...
April 2017: International Journal of Reproductive Biomedicine (Yazd, Iran)
https://www.readbyqxmd.com/read/28835760/testicular-adrenal-rests-tumors-and-testicular-microlithiasis-in-a-brazilian-case-series-with-classic-congenital-adrenal-hyperplasia
#13
Laura Ohana Marques Coelho de Carvalho, Raymundo Miguel Garcia Lora, Claudia Renata Rezende Penna, Izabel Calland Ricarte Beserra
BACKGROUND: Testicular adrenal rest tumors are a benign condition characterized by the presence of remnants of adrenal tissue within the testes that can lead to infertility. Testicular microlithiasis are calculus deposits within the seminiferous tubules. Both are described in congenital adrenal hyperplasia. OBJECTIVES: Describe the frequency of testicular adrenal rest tumors and testicular microlithiasis in a Brazilian case series of patients with classic congenital adrenal hyperplasia and to also relate these changes to disease control and hypothalamic-pituitary-gonadal axis disorders...
January 2017: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28833896/prospective-validation-of-a-clinical-score-for-males-presenting-with-an-acute-scrotum
#14
Lillian C Frohlich, Niloufar Paydar-Darian, Bartley G Cilento, Lois K Lee
OBJECTIVE: To validate the Testicular Workup for Ischemia and Suspected Torsion (TWIST) score among pediatric emergency medicine providers for the evaluation of pediatric males presenting with testicular pain and swelling (acute scrotum). METHODS: We conducted a prospective cohort study of males 3 months to 18 years old presenting with an acute scrotum. History and physical examination findings, including components of the TWIST score (hard testicle, absent cremasteric reflex, nausea/vomiting, and high riding testicle) as well as diagnostic results (ultrasound, urine, sexually transmitted infection (STI) testing) were recorded...
August 20, 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28819522/-metastatic-paratesticular-liposarcoma
#15
Otheman Fahsi, Adil Kallat, Hicham Ouazize, Hamza Dergamoun, Hachem El Sayegh, Ali Iken, Lounis Benslimane, Yassine Nouini
We report the dramatic case of a 18-year old patient with immediately metastatic round cells paratesticular liposarcoma. It is a rare tumor that develops in the fatty tissue surrounding the testicle and the spermatic cord. Clinical and radiological signs are nonspecific and diagnosis is usually based on surgical specimen examination. The treatment involves radical inguinal orchiectomy, sometimes extended to adjacent structures. Adjuvant radiation therapy could be used in the case of locally advanced mass or incomplete resection...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28816296/-complete-androgen-insensitivity-syndrome-associated-with-vesical-fistula-a-case-report-and-literature-review
#16
K H Hua, L Yang, X W Zhang, W J Bai, Q Li, T Xu
Androgen insensitivity syndrome (AIS) is a very uncommon genetic disorder that results from the resistance of androgen receptor (AR) to androgen, which influences the formation of the male genitalia and in turn presents with female phenotype. Surgical resection of undesceaded testicle and different kinds of genitoplasty are crucial methods to correct the deformity of reproductive system, as well as hormone replacement therapy, which is an essential therapy for postoperational rehabilitation in AIS patients...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28812465/melanotic-neuroectodermal-tumor-of-infancy-presenting-with-fast-growing-scrotal-swelling-a-case-report-and-literature-review
#17
Corinthia Fabien-Dupuis, Benjamin Niver, Nick Shillingford, Larry Wang, Paul J Kokorowski, Shengmei Zhou
Testicular melanotic neuroectodermal tumor of infancy (MNTI) is extremely rare, with 2 cases reported in the literature. Its rarity and rapid and infiltrative growth pattern pose a diagnostic challenge. A previously healthy 3-month-old male, presented with a history of worsening left hemiscrotal swelling for 1 week. An outside ultrasound was suggestive of testicular torsion. Left orchiectomy demonstrated a mass occupying almost entire testicle with a variegated cut surface, with areas of pigmentation, necrosis, and hemorrhage...
September 2017: Pediatric and Developmental Pathology
https://www.readbyqxmd.com/read/28796153/optimum-drug-combinations-for-the-sedation-of-growing-boars-prior-to-castration
#18
Heidi S Lehmann, Dominique Blache, Eleanor Drynan, Pema Tshewang, David J C Blignaut, Gabrielle C Musk
Juvenile male pigs were sedated for castration. Eight five-month old boars were sedated twice (two weeks apart) with a combination of detomidine (0.1 mg/kg), midazolam (0.2 mg/kg) and either butorphanol (0.2 mg/kg) (Group MDB, n = 8) or morphine (0.2 mg/kg) (Group MDM, n = 8) intramuscularly. The boars were positioned in lateral recumbency and lidocaine (200 mg total) was injected into the testicle and scrotal skin. Castration of a single testicle was performed on two occasions. Sedation and reaction (to positioning and surgery) scores, pulse rate, respiratory rate, haemoglobin oxygen saturation, body temperature, arterial blood gas parameters and the times to immobility and then recovery were recorded...
August 10, 2017: Animals: An Open Access Journal From MDPI
https://www.readbyqxmd.com/read/28794603/testicular-epidermoid-cyst-a-rare-case
#19
Kenan B Ashouri, Joshua M Heiman, Emily F Kelly, Angelos N Manganiotis
Testicular epidermoid cysts are a rare cause of testicular pathology. No cases of recurrence or metastasis have been reported in the literature. As a result, inguinal partial orchiectomy with frozen section has recently become standard treatment. A 43-year-old male presented with right testicular discomfort and the presence of mass. Right inguinal partial orchiectomy with frozen section was performed, and the right testicle was preserved. The final pathology report confirmed the diagnosis of an epidermoid cyst...
July 2017: Urology Annals
https://www.readbyqxmd.com/read/28783504/puberty-arises-with-testicular-alterations-and-defective-amh-expression-in-rams-prenatally-exposed-to-testosterone
#20
S E Recabarren, M Recabarren, D Sandoval, A Carrasco, V Padmanabhan, R Rey, H G Richter, C C Perez-Marin, T Sir-Petermann, P P Rojas-Garcia
The male gonadal tissue can be a sensitive target to the reprogramming effects of testosterone (T) during prenatal development. We have demonstrated that male lambs born to dams receiving T during pregnancy-a model system to the polycystic ovary syndrome (PCOS)-show a decreased number of germ cells early in life, and when adult, a reduced amount of sperm and ejaculate volume. These findings are a key to put attention to the male offspring of women bearing PCOS, as they are exposed to increased levels of androgen during pregnancy which can reprogram their reproductive outcome...
June 23, 2017: Domestic Animal Endocrinology
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