Seasonal variation of human sperm cells among 4,422 semen samples: A retrospective study in Turkey

Özelçi, Runa; Yılmaz, Saynur; Dilbaz, Berna; Akpınar, Funda; Cırık, Derya Akdağ; Dilbaz, Serdar; Öcal, Ahmet

doi:10.1080/19396368.2016.1225322

Cited by 30 publications

(33 citation statements)

References 26 publications

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“…In most of those studies, the minimum sperm count was in summer, when the temperature is high and the day is longer, while the maximum sperm count was seen during colder seasons, when the day is short (Künzle et al, ; Zhang et al, ; Krause & Krause, ). Ozelci et al () found no evidence of a significant relationship between sperm concentration and season in their study of seasonal variation in human sperm quality, based on 4,422 semen samples obtained from infertility clinics. In a meta‐analysis, Levine () determined a lower sperm count in summer and a peak in winter.…”

Section: Discussionmentioning

confidence: 98%

“…Melatonin levels are low during the day and high during winter, when the day length is short. Abnormally high melatonin levels characterise males with hypogonadism (De Giorgi et al, ), as well as those with oligospermia or azoospermia (Ozelci et al, ). We propose that seasonally varying melatonin levels have an effect on sperm retrieval in patients with NOA scheduled to undergo mTESE.…”

Section: Discussionmentioning

confidence: 99%

“…This, in turn, has drawn attention to the relationship between seasonal variation and sperm quality. Both temperature and photo‐period were shown to impact sperm quality (Ozelci et al, ). An elevation of testicular temperature hinders spermatozoa production by impairing DNA repair mechanisms (Rao et al, ; Zhang et al, ), whereas the photo‐period regulates melatonin levels and thus fertility (Künzle, Mueller, Huber, Drescher, & Bersinger, ).…”

Section: Introductionmentioning

confidence: 99%

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Effect of seasonal variation on the success of micro-dissection testicular sperm extraction: A pilot study

Yücel¹,

Kozacıoğlu²

2018

Andrologia

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| INTRODUC TI ONIn intracytoplasmic sperm injection (ICSI), use of the sperm obtained through micro-dissection testicular sperm extraction (mTESE) enables patients with non-obstructive azoospermia (NOA) to have a biological child (Turunc et al., 2010). According to the literature, the rate of sperm retrieval in patients with NOA undergoing mTESE is around 50% (Vloeberghs et al., 2015). The success of the operation depends on many factors (Yucel et al., 2017), including seasonal variations in numerous physical and psychological factors, including reproduction. This, in turn, has drawn attention to the relationship between seasonal variation and sperm quality. Both temperature and photoperiod were shown to impact sperm quality (Ozelci et al., 2016). An elevation of testicular temperature hinders spermatozoa production by impairing DNA repair mechanisms (Rao et al., 2016;Zhang et al., 2013), whereas the photo-period regulates melatonin levels and thus fertility (Künzle, Mueller, Huber, Drescher, & Bersinger, 2004). Hence, seasonal variation may be considered to affect the sperm retrieval rate. Although many factors affecting the success of mTESE have been investigated, to our knowledge, there are no published studies under the influence of seasonal variation on the success of this procedure. Thus, the aim of this study was to investigate the relationship between seasonal variations and the success of mTESE. Our results will contribute to improving the sperm retrieval rate of mTESE. | MATERIAL S AND ME THODS | Patients and study designThe medical data of 497 consecutive patients diagnosed with NOA, and who subsequently underwent mTESE at our institution between AbstractThe aim of this study is to investigate the relationship between seasonal variation and the success of micro-dissection testicular sperm extraction (mTESE). A total of 395 patients who were diagnosed with non-obstructive azoospermia, who had undergone mTESE operation for the first time, and who did not have an obstructive pathology, were included in the study. The patients were divided into 12 groups according to the month of the operation and four groups according to the season. The groups were compared with regard to age, duration of infertility, BMI, hormone profile and sperm retrieval rate of mTESE. The maximum sperm retrieval rate was obtained in January (69.7%) and the minimum sperm retrieval rate was obtained in November (50.0%). No statistically significant difference was detected when the mTESE results were compared with regard to months (p = 0.638). The maximum sperm retrieval rate was obtained in the summer (62.8%) and the minimum was obtained in spring (57.0%). No statistically significant difference was determined between groups created according to seasons (p = 0.865). We did not observe a statistically significant relationship between the sperm retrieval rate and the seasons. Studies conducted in regions with different climate features could better reveal the relationship between seasonal variation and the success of mTESE. K E Y W O R D...

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Section: Discussionmentioning

confidence: 98%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effect of seasonal variation on the success of micro-dissection testicular sperm extraction: A pilot study

Yücel¹,

Kozacıoğlu²

2018

Andrologia

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“…Важливою та актуальною задачею репродуктології є патогенетичне обґрунтування алгоритму діагностики чоловічого безпліддя з урахуванням несприятливого зовнішнього фактору, що впливає на здоров'я чоловіків в процесі професійної діяльності [1,2,3]. Добре відомо, що зовнішні умови мають серйозний внесок у розвиток захворювань репродуктивного апарату чоловіків, хоча їх причина та структура досі викладаються нечітко, є суперечливими, незважаючи на переконливий перелік чинників, що порушують сперматогенез [4].…”

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“…В ряді випадків зустрічалась патологія голівок сперматозоїдів (18 чол., 31,0 %). Щодо кількісних показників спермограми при роботі в умовах стресу виявлено зменшення загальної кількості сперматозоїдів в 1 мл еякуляту менше 15,0% у 17,2% пацієнтів (низька чутливість -17,2 [9,9], висока вірогідність хибно-негативного тесту-82,8[71,1-90,4]), зменшення кількості живих сперматозоїдів менше 58,0% встановлено у 24,1% чоловіків (чутливість − 24,1 [14,5]), зменшення кількості рухливих сперматозоїдів у еякуляті менше 40,0% верифіковано у 55,1% пацієнтів (чутливість -55,2 [42,3], проте висока специфічність − 88,0[70,0-95,8]), зменшення кількості сперматозоїдів з поступальним рухом менше 32,0% діагностовано у 65,5% (висока чутливість -65,5 [52,4] та специфічність -88,0 [70,0-95,8]). При вивченні якісних показників спермограми у чоловіків з безпліддям кількість нормальних за морфологією сперматозоїдів була зафіксована лише у 27,6% пацієнтів (невисока чутливість − 27,9 [17,2], висока вірогідність хибно-негативного тесту − 72, 4[59,8-82,3]), патозооспермія верифікувалась у 72,4% хворих.…”

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Діагностичні Критерії Чоловічої Інфертильності: Огляд Літератури Та Результати Власних Спостережень

Олександрівна¹

2020

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The main diagnostic criteria for determining male infertility are provided in the article. The authors considered the mechanisms of impaired spermogenesis under the influence of unfavourable professional factors on the example of the evaluation of endocrine status, spermogram indicators and ultrasound examination of blood flow in the main testicular vessels of 187 patients who were exposed to low (43) or high (38) temperatures during their professional activity, worked under conditions of prolonged stress (58 people), were in contact with agricultural fertilizers and toxic chemicals (48 people) and 25 healthy men (control group). The results of the study conducted by the authors indicate a number of disorders of the morpho-functional state of sperm in men, depending on the specific production environment. The data obtained can be further used to develop a scientifically proven algorithm for correction of the discussed pathology, which is of great practical importance for family doctors, specialists in reproductologists, urologists and doctors dealing with occupational diseases.

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Telocytes of the male urogenital system: Interrelationships, possible functions, and pathological implications

Sanches

Tamarindo

Maldarine

et al. 2021

Cell Biology International

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The male urogenital system is composed of the reproductive system and the urinary tract; they have an interconnected embryonic development and share one of their anatomical components, the urethra. This system has a highly complex physiology deeply interconnected with the circulatory and nervous systems, as well as being capable of adapting to environmental variations; it also undergoes changes with aging and, in the case of the reproductive system, with seasonality.The stroma is an essential component in this physiological plasticity and its complexity has increased with the description in the last decade of a new cell type, the telocyte. Several studies have demonstrated the presence of telocytes in the organs of the male urogenital system and other systems; however, their exact function is not yet known. The present review addresses current knowledge about telocytes in the urogenital system in terms of their locations, interrelationships, possible functions and pathological implications. It has been found that telocytes in the urogenital system possibly have a leading role in stromal tissue organization/maintenance, in addition to participation in stem cell niches and an association with the immune system, as well as specific functions in the urogenital system, lipid synthesis in the testes, erythropoiesis in the kidneys and the micturition reflex in the bladder. There is also evidence that telocytes are involved in pathologies in the kidneys, urethra, bladder, prostate, and testes.

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Seasonal variation of human sperm cells among 4,422 semen samples: A retrospective study in Turkey

Abstract: WHO: World Health Organization; mRNA:messenger ribonucleic acid.

Cited by 30 publications

References 26 publications

Effect of seasonal variation on the success of micro-dissection testicular sperm extraction: A pilot study

Effect of seasonal variation on the success of micro-dissection testicular sperm extraction: A pilot study

Діагностичні Критерії Чоловічої Інфертильності: Огляд Літератури Та Результати Власних Спостережень

Telocytes of the male urogenital system: Interrelationships, possible functions, and pathological implications

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