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Changes in vaginal gene expression and anogenital distance during gilt reproductive development.
IF 1.6 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-12-20 eCollection Date: 2025-01-01 DOI: 10.1590/1984-3143-AR2024-0056
Shannon L Dierking, Jodi M Morton, Jeffrey A Clapper, Michael G Gonda, Juan C Pinilla, C L Levesque

Early puberty is associated with improved long-term reproductive performance. Predicting who will achieve early puberty is limited to intensive, invasive serial blood collections for measurement of reproductive hormones. The vaginal genome during pubertal development has potential as biomarkers of early estrus in the pre-pubertal period. Pre-pubertal gilts (n =13) were followed from d74 ± 3 of age until first estrus or d214 ± 1 of age. Blood, vaginal epithelia, and anogenital distance were collected at five timepoints during reproductive development (d74, d104, d130, d160 and first estrus or end of trial). Total RNA was isolated from vaginal epithelia and relative gene expression of two toll-like receptors (TLR-4 and TLR-5), tacykinin precursor-3 (TAC-3), insulin-like growth factor-1 (IGF-1), and estrogen receptor (ERα)-alpha was quantified by real time RT-PCR, relative to expression of RPLP0. Four gilts exhibited estrus early (< d184), 3 were average (d194 to 195), 3 were late (d203 to 213), and 3 were deemed anestrus. Comparison of expression of each gene relative to d70 was performed using the PCR package in RStudio (version 1.2.5025) and Fisher's exact t-test for TLR-4, TLR-5 and TAC-3, and ANOVA for ER-alpha and IGF-1. Correlation analysis examined the relationship between anogenital distance and age at first estrus. A single blood draw for serum progesterone was obtained 8 days after recorded first estrus or end of trial; the presence of serum progesterone supports the visual identification of standing estrus. Expression of IGF-1 and TAC-3 were up-regulated 9- and 7-fold, respectively at d160 (P < 0.05). Expression of ERα tended to be upregulated 3-fold at d104 (P = 0.08) and expression of TLR-4 and TLR-5 was not detected until first estrus. Anogenital distance was positively correlated to the first estrus. These transcripts associated with reproduction warrant further investigation into use as biomarkers to detect early estrus.

{"title":"Changes in vaginal gene expression and anogenital distance during gilt reproductive development.","authors":"Shannon L Dierking, Jodi M Morton, Jeffrey A Clapper, Michael G Gonda, Juan C Pinilla, C L Levesque","doi":"10.1590/1984-3143-AR2024-0056","DOIUrl":"https://doi.org/10.1590/1984-3143-AR2024-0056","url":null,"abstract":"<p><p>Early puberty is associated with improved long-term reproductive performance. Predicting who will achieve early puberty is limited to intensive, invasive serial blood collections for measurement of reproductive hormones. The vaginal genome during pubertal development has potential as biomarkers of early estrus in the pre-pubertal period. Pre-pubertal gilts (n =13) were followed from d74 ± 3 of age until first estrus or d214 ± 1 of age. Blood, vaginal epithelia, and anogenital distance were collected at five timepoints during reproductive development (d74, d104, d130, d160 and first estrus or end of trial). Total RNA was isolated from vaginal epithelia and relative gene expression of two toll-like receptors (TLR-4 and TLR-5), tacykinin precursor-3 (TAC-3), insulin-like growth factor-1 (IGF-1), and estrogen receptor (ERα)-alpha was quantified by real time RT-PCR, relative to expression of RPLP0. Four gilts exhibited estrus early (< d184), 3 were average (d194 to 195), 3 were late (d203 to 213), and 3 were deemed anestrus. Comparison of expression of each gene relative to d70 was performed using the PCR package in RStudio (version 1.2.5025) and Fisher's exact t-test for TLR-4, TLR-5 and TAC-3, and ANOVA for ER-alpha and IGF-1. Correlation analysis examined the relationship between anogenital distance and age at first estrus. A single blood draw for serum progesterone was obtained 8 days after recorded first estrus or end of trial; the presence of serum progesterone supports the visual identification of standing estrus. Expression of IGF-1 and TAC-3 were up-regulated 9- and 7-fold, respectively at d160 (<i>P</i> < 0.05). Expression of ERα tended to be upregulated 3-fold at d104 (<i>P</i> = 0.08) and expression of TLR-4 and TLR-5 was not detected until first estrus. Anogenital distance was positively correlated to the first estrus. These transcripts associated with reproduction warrant further investigation into use as biomarkers to detect early estrus.</p>","PeriodicalId":7889,"journal":{"name":"Animal Reproduction","volume":"22 1","pages":"e20240056"},"PeriodicalIF":1.6,"publicationDate":"2024-12-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11702982/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142942843","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Manila duck (Cairina moschata) frozen semen quality in lactated ringer's egg yolk-astaxanthin with different concentrations of DMSO.
IF 1.6 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-12-02 eCollection Date: 2024-01-01 DOI: 10.1590/1984-3143-AR2023-0015
Sipora Petronela Telnoni, Hory Iramaya Dilak, Iis Arifiantini, Wilmientje Marlene Nalley

This study was conducted to evaluate manila duck's (Cairina moschata) frozen semen quality after cryopreservation in lactated ringer's egg yolk-astaxanthin (LREY-A) with 5 different concentrations of dimethyl sulfoxide (DMSO). Methodology: Semen was collected from 3 manila ducks (Cairina moschata) using the cloaca massage technique twice a week. Fresh semen was evaluated macro and microscopically then polled and divided into 5 tubes of treatments. Each tube was diluted in DMSO4, DMSO6, DMSO8, DMSO10, and DMSO12. The semen of each treatment was loaded into a 0.25 mL straw and equilibrated at 5 °C for 2 h. Freeze above nitrogen vapor and stored a container of liquid nitrogen at -196 °C, then semen thawed in a water bath at 37 °C for 30 sec. Data were analyzed using One-Way ANOVA Analysis. Results of this showed that post-equilibration sperm motility and sperm viability have differed significantly (P<0.05) for each treatment, with the highest % sperm motility DMSO8 and DMSO6, this is also shown in post-thawing sperm motility and viability which have differed significantly (P<0.05) and the highest % sperm viability were DMSO8 and DMSO6. In conclusion, Frozen semen extender formulation of DMSO8 and DMSO6 which are used in manila duck semen cryopreservation was the best to other treatments to maintain % sperm motility and % sperm viability in post-equilibration and post-thawing. The highest sperm motility recovery rate was in DMSO8. The lowest sperm live and dead abnormality was in DMSO8. It is concluded that the combination of DMSO8 was the best in maintaining the quality of manila duck frozen semen.

{"title":"Manila duck (<i>Cairina moschata</i>) frozen semen quality in lactated ringer's egg yolk-astaxanthin with different concentrations of DMSO.","authors":"Sipora Petronela Telnoni, Hory Iramaya Dilak, Iis Arifiantini, Wilmientje Marlene Nalley","doi":"10.1590/1984-3143-AR2023-0015","DOIUrl":"10.1590/1984-3143-AR2023-0015","url":null,"abstract":"<p><p>This study was conducted to evaluate manila duck's (<i>Cairina moschata</i>) frozen semen quality after cryopreservation in lactated ringer's egg yolk-astaxanthin (LREY-A) with 5 different concentrations of dimethyl sulfoxide (DMSO). Methodology: Semen was collected from 3 manila ducks (<i>Cairina moschata</i>) using the cloaca massage technique twice a week. Fresh semen was evaluated macro and microscopically then polled and divided into 5 tubes of treatments. Each tube was diluted in DMSO4, DMSO6, DMSO8, DMSO10, and DMSO12. The semen of each treatment was loaded into a 0.25 mL straw and equilibrated at 5 °C for 2 h. Freeze above nitrogen vapor and stored a container of liquid nitrogen at -196 °C, then semen thawed in a water bath at 37 °C for 30 sec. Data were analyzed using One-Way ANOVA Analysis. Results of this showed that post-equilibration sperm motility and sperm viability have differed significantly (P<0.05) for each treatment, with the highest % sperm motility DMSO8 and DMSO6, this is also shown in post-thawing sperm motility and viability which have differed significantly (P<0.05) and the highest % sperm viability were DMSO8 and DMSO6. In conclusion, Frozen semen extender formulation of DMSO8 and DMSO6 which are used in manila duck semen cryopreservation was the best to other treatments to maintain % sperm motility and % sperm viability in post-equilibration and post-thawing. The highest sperm motility recovery rate was in DMSO8. The lowest sperm live and dead abnormality was in DMSO8<sup>.</sup> It is concluded that the combination of DMSO8 was the best in maintaining the quality of manila duck frozen semen.</p>","PeriodicalId":7889,"journal":{"name":"Animal Reproduction","volume":"21 4","pages":"e20230015"},"PeriodicalIF":1.6,"publicationDate":"2024-12-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11614135/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142765564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Polyethyleneimine-mediated gene transfection in porcine fetal fibroblasts.
IF 1.6 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-11-22 eCollection Date: 2024-01-01 DOI: 10.1590/1984-3143-AR2024-0026
Andressa Pereira de Souza, Ana Paula Bastos, Francisco Noé da Fonseca, José Rodrigo Pandolfi, Carlos André da Veiga Lima Rosa Costamilan, Mariana Groke Marques

Polyethylenimine (PEI) has been explored as an efficient non-viral system for delivering genes to cells; however, there were no protocols for its use in porcine fetal fibroblasts (PFF). Therefore, we compared different concentrations of FITC-PEI (0.625, 1.25, 2.5, 5, 10, 20, 40, or 80 µg/mL) and incubation times (30 min, 1 h, or 2 h). It was observed that the incubation time did not affect the internalization of the PEI-FITC and that 30 min was sufficient to capture the complex. The concentrations higher than 10 µg/mL could reach many marked PFF (>90%). Then, two PEI concentrations were tested, 10 or 40 µg/mL, combined with an N/P of 2 with the pmhyGENIE-5 for 30 min. The percentage of PFF-GFP positive was similar between the PEI concentrations in the evaluation time points (24 h, 48 h, and 72 h). However, 40 µg/mL caused higher membrane damage rates. Thus, it can be concluded that concentrations between 10 - 80 µg/ml of PEI promote high incorporation rates, even in periods as short as 30 minutes. Furthermore, it can be stated that the transfection condition used in Polyplexes 1 (10 µg/mL of PEI and 37.5 µg/mL of pmhyGENIE-5 for 30 min) efficiently produces genetically edited porcine fetal fibroblasts with low cell damage.

{"title":"Polyethyleneimine-mediated gene transfection in porcine fetal fibroblasts.","authors":"Andressa Pereira de Souza, Ana Paula Bastos, Francisco Noé da Fonseca, José Rodrigo Pandolfi, Carlos André da Veiga Lima Rosa Costamilan, Mariana Groke Marques","doi":"10.1590/1984-3143-AR2024-0026","DOIUrl":"10.1590/1984-3143-AR2024-0026","url":null,"abstract":"<p><p>Polyethylenimine (PEI) has been explored as an efficient non-viral system for delivering genes to cells; however, there were no protocols for its use in porcine fetal fibroblasts (PFF). Therefore, we compared different concentrations of FITC-PEI (0.625, 1.25, 2.5, 5, 10, 20, 40, or 80 µg/mL) and incubation times (30 min, 1 h, or 2 h). It was observed that the incubation time did not affect the internalization of the PEI-FITC and that 30 min was sufficient to capture the complex. The concentrations higher than 10 µg/mL could reach many marked PFF (>90%). Then, two PEI concentrations were tested, 10 or 40 µg/mL, combined with an N/P of 2 with the pmhyGENIE-5 for 30 min. The percentage of PFF-GFP positive was similar between the PEI concentrations in the evaluation time points (24 h, 48 h, and 72 h). However, 40 µg/mL caused higher membrane damage rates. Thus, it can be concluded that concentrations between 10 - 80 µg/ml of PEI promote high incorporation rates, even in periods as short as 30 minutes. Furthermore, it can be stated that the transfection condition used in Polyplexes 1 (10 µg/mL of PEI and 37.5 µg/mL of pmhyGENIE-5 for 30 min) efficiently produces genetically edited porcine fetal fibroblasts with low cell damage.</p>","PeriodicalId":7889,"journal":{"name":"Animal Reproduction","volume":"21 4","pages":"e20240026"},"PeriodicalIF":1.6,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11614137/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142765565","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Equine ICSI: an update on semen perspective.
IF 1.6 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-11-22 eCollection Date: 2024-01-01 DOI: 10.1590/1984-3143-AR2024-0015
Rodrigo Arruda de Oliveira, Maria Augusta Alonso, Juliana Schleich Fonte, Claudia Barbosa Fernandes

Intracytoplasmic Sperm Injection (ICSI) has increased usage in cases of stallion fertility issues, particularly for older stallions, those with reduced sperm numbers or quality, or stallions that have passed away, and only a limited amount of frozen semen is available. By manipulating the frozen semen through thawing, diluting, and refreezing or by cutting the straw under liquid nitrogen, the supply of semen for ICSI can be extended. While ICSI requires a minimal number of spermatozoa per procedure, it is important to consider sperm quality as a crucial factor affecting fertilization and embryo development. Although it is possible to produce healthy embryos and offspring from low quality sperm samples, it is preferable to process and select morphologically and functionally superior sperm to maximize the chances of successful fertilization and embryo development. Several techniques are available for selecting the spermatozoa for ICSI, such as swim-up, washing, density gradient centrifugation, microfluidic sorting, and some combinations. In this review, we will focus on semen type, handling, recent breakthroughs, stallion effects on ICSI efficiency and the prospects of this technology within the equine industry.

{"title":"Equine ICSI: an update on semen perspective.","authors":"Rodrigo Arruda de Oliveira, Maria Augusta Alonso, Juliana Schleich Fonte, Claudia Barbosa Fernandes","doi":"10.1590/1984-3143-AR2024-0015","DOIUrl":"10.1590/1984-3143-AR2024-0015","url":null,"abstract":"<p><p>Intracytoplasmic Sperm Injection (ICSI) has increased usage in cases of stallion fertility issues, particularly for older stallions, those with reduced sperm numbers or quality, or stallions that have passed away, and only a limited amount of frozen semen is available. By manipulating the frozen semen through thawing, diluting, and refreezing or by cutting the straw under liquid nitrogen, the supply of semen for ICSI can be extended. While ICSI requires a minimal number of spermatozoa per procedure, it is important to consider sperm quality as a crucial factor affecting fertilization and embryo development. Although it is possible to produce healthy embryos and offspring from low quality sperm samples, it is preferable to process and select morphologically and functionally superior sperm to maximize the chances of successful fertilization and embryo development. Several techniques are available for selecting the spermatozoa for ICSI, such as swim-up, washing, density gradient centrifugation, microfluidic sorting, and some combinations. In this review, we will focus on semen type, handling, recent breakthroughs, stallion effects on ICSI efficiency and the prospects of this technology within the equine industry.</p>","PeriodicalId":7889,"journal":{"name":"Animal Reproduction","volume":"21 4","pages":"e20240015"},"PeriodicalIF":1.6,"publicationDate":"2024-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11614134/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142765562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fecal steroids of breeding and non-breeding free-ranging black-tufted marmoset females.
IF 1.6 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-11-18 eCollection Date: 2024-01-01 DOI: 10.1590/1984-3143-AR2024-0003
Ita de Oliveira E Silva, Vanner Boere, Maria Bernardete Cordeiro de Sousa

The relationships between members of the groups include behaviors related to affiliation, dispute for dominant positions, parental care, and facing disputes for food and territory. All these activities are under hormone modulation and those of a steroidal nature are heavily involved. Despite this, only few data are available on steroid hormones in free-ranging marmosets of the Callithrix genus, which limits the understanding of the physiological functioning and modulation of the socio-sexual behavior by steroid hormones of this taxon. In this study, we characterized fecal concentrations of progesterone, estrogens, and glucocorticoids of six breeding and non-breeding females from two groups of free-ranging Callithrix penicillata (É. Geoffroy, 1812). The concentration of progesterone was significantly higher in females which gave birth, compared to non-breeding females. The levels of fecal estrogens and glucocorticoids did not differ between breeding and non-breeding females. The data are in agreement with the few studies on steroid values of wild and captive marmosets. This study shows the concentrations of progesterone and glucocorticoids in free-ranging C. penicillata for the first time, and it is the only study reporting the concentration of fecal estrogens in wild marmosets. Overall, the high levels of progesterone associated with pregnancy in free-ranging C. penicillata as well as levels of estrogens and glucocorticoids close to those reported for other species, suggest a conserved pattern of hormonal secretion between Callithrix species that have been studied in captivity.

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引用次数: 0
Sex-specific efficacy of deslorelin in downregulating reproductive activity in the grey mouse lemur (Microcebus murinus).
IF 1.6 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-11-18 eCollection Date: 2024-01-01 DOI: 10.1590/1984-3143-AR2023-0137
Aude Noiret, Fabienne Aujard, Jeremy Terrien

Deslorelin is a GnRH agonist used in veterinary medicine to temporarily inhibit reproduction in domestic animals and is sometimes tested in captive species in zoo to control population or tame aggressive behaviours in males. However, some studies have revealed the inefficacy of deslorelin specifically in males, contrary to females that follow a classic long-term inhibition of the reproductive hypothalamic-pituitary axis through sexual steroid negative feedback. We implanted 5 males and 6 females grey mouse lemurs (Microcebus murinus), long-day breeders that display a complete inhibition of the reproductive system during winter, at the end of the short-day period, a few weeks before the breeding season. Contrary to females, which exhibited a classic inhibitory response to deslorelin, males' testosterone levels increased as well as their testis size, which suggests a sex-specific sensitivity to the negative feedback of sexual steroids before the mating period. We propose that this sex-imbalance is related to the different life-history of males as opposed to females concerning reproductive tasks and behaviour.

{"title":"Sex-specific efficacy of deslorelin in downregulating reproductive activity in the grey mouse lemur (<i>Microcebus murinus</i>).","authors":"Aude Noiret, Fabienne Aujard, Jeremy Terrien","doi":"10.1590/1984-3143-AR2023-0137","DOIUrl":"10.1590/1984-3143-AR2023-0137","url":null,"abstract":"<p><p>Deslorelin is a GnRH agonist used in veterinary medicine to temporarily inhibit reproduction in domestic animals and is sometimes tested in captive species in zoo to control population or tame aggressive behaviours in males. However, some studies have revealed the inefficacy of deslorelin specifically in males, contrary to females that follow a classic long-term inhibition of the reproductive hypothalamic-pituitary axis through sexual steroid negative feedback. We implanted 5 males and 6 females grey mouse lemurs (<i>Microcebus murinus</i>), long-day breeders that display a complete inhibition of the reproductive system during winter, at the end of the short-day period, a few weeks before the breeding season. Contrary to females, which exhibited a classic inhibitory response to deslorelin, males' testosterone levels increased as well as their testis size, which suggests a sex-specific sensitivity to the negative feedback of sexual steroids before the mating period. We propose that this sex-imbalance is related to the different life-history of males as opposed to females concerning reproductive tasks and behaviour.</p>","PeriodicalId":7889,"journal":{"name":"Animal Reproduction","volume":"21 4","pages":"e20230137"},"PeriodicalIF":1.6,"publicationDate":"2024-11-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11614138/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142765566","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Chilled storage of Pacific white shrimp (Litopenaeus vannamei) spermatophores for assisted insemination. 用于辅助受精的太平洋南美白对虾(Litopenaeus vannamei)精子的冷藏。
IF 1.6 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-10-25 eCollection Date: 2024-01-01 DOI: 10.1590/1984-3143-AR2024-0006
Francisco Hiago Gadelha Moreira, Larissa Teixeira Nunes, Vanessa Alves Pereira, Renata Vieira do Nascimento, Carminda Sandra Brito Salmito Vanderley

The cooling of Litopenaeus vannamei shrimp spermatophores for assisted insemination can enable the transfer of gametes between reproduction laboratories. This study aimed to assess three extenders for cooling L. vannamei spermatophores for assisted insemination. Spermatophores were chilled at 15 °C for 24 or 48 hours using powdered coconut water ACP® (PCW), mineral oil (MO), and sterilized seawater (SSW) as extenders. All treatments demonstrated consistent responses over time. Apparent viability and morphological integrity percentages remained above 60% and 70%, respectively, across treatments and storage durations. Focusing on diluents, normal cell percentages for MO, SSW, and PCW treatments were 74.9±9.20%, 77.3±9.40%, and 78.1±6.35%, respectively, irrespective of storage time. The highest hatching rate was observed in the SSW treatment (80.67±12.01%), which was significantly superior to the PCW treatment (50.15±20.75%). The hatching rates observed in the MO treatment (71.47±18.83%) did not statistically differ from either PCW or SSW treatments. The cooling protocol successfully preserved the spermatophores' ability to maintain favorable levels of apparent viability, normal morphology, and hatching rates after 48 hours of storage at 15 °C using mineral oil, seawater, or ACP® as extenders. Sterilized seawater emerged as the most efficient diluent, delivering superior hatching rates following artificial insemination.

冷却用于辅助受精的凡纳滨对虾精子可实现配子在繁殖实验室之间的转移。这项研究旨在评估用于冷却万年青精子以进行辅助受精的三种延长剂。使用椰子水粉 ACP® (PCW)、矿物油 (MO) 和灭菌海水 (SSW) 作为延伸剂,将精子在 15 °C 下冷却 24 或 48 小时。随着时间的推移,所有处理都显示出一致的反应。在不同的处理和储存期限内,表观存活率和形态完整率分别保持在 60% 和 70% 以上。就稀释剂而言,无论储存时间长短,MO、SSW 和 PCW 处理的正常细胞率分别为 74.9±9.20%、77.3±9.40% 和 78.1±6.35%。SSW处理的孵化率最高(80.67±12.01%),明显优于PCW处理(50.15±20.75%)。MO处理的孵化率(71.47±18.83%)与PCW或SSW处理没有统计学差异。以矿物油、海水或 ACP® 作为扩展剂,在 15 °C 下储存 48 小时后,冷却方案成功地保持了精子的表观活力、正常形态和孵化率。灭菌海水是最有效的稀释剂,可在人工授精后提供出色的孵化率。
{"title":"Chilled storage of Pacific white shrimp (<i>Litopenaeus vannamei</i>) spermatophores for assisted insemination.","authors":"Francisco Hiago Gadelha Moreira, Larissa Teixeira Nunes, Vanessa Alves Pereira, Renata Vieira do Nascimento, Carminda Sandra Brito Salmito Vanderley","doi":"10.1590/1984-3143-AR2024-0006","DOIUrl":"10.1590/1984-3143-AR2024-0006","url":null,"abstract":"<p><p>The cooling of <i>Litopenaeus vannamei</i> shrimp spermatophores for assisted insemination can enable the transfer of gametes between reproduction laboratories. This study aimed to assess three extenders for cooling <i>L. vannamei</i> spermatophores for assisted insemination. Spermatophores were chilled at 15 °C for 24 or 48 hours using powdered coconut water ACP® (PCW), mineral oil (MO), and sterilized seawater (SSW) as extenders. All treatments demonstrated consistent responses over time. Apparent viability and morphological integrity percentages remained above 60% and 70%, respectively, across treatments and storage durations. Focusing on diluents, normal cell percentages for MO, SSW, and PCW treatments were 74.9±9.20%, 77.3±9.40%, and 78.1±6.35%, respectively, irrespective of storage time. The highest hatching rate was observed in the SSW treatment (80.67±12.01%), which was significantly superior to the PCW treatment (50.15±20.75%). The hatching rates observed in the MO treatment (71.47±18.83%) did not statistically differ from either PCW or SSW treatments. The cooling protocol successfully preserved the spermatophores' ability to maintain favorable levels of apparent viability, normal morphology, and hatching rates after 48 hours of storage at 15 °C using mineral oil, seawater, or ACP® as extenders. Sterilized seawater emerged as the most efficient diluent, delivering superior hatching rates following artificial insemination.</p>","PeriodicalId":7889,"journal":{"name":"Animal Reproduction","volume":"21 4","pages":"e20240006"},"PeriodicalIF":1.6,"publicationDate":"2024-10-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11529969/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142567820","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Withanolide derivatives: natural compounds with anticancer potential offer low toxicity to fertility and ovarian follicles in mice. Withanolide 衍生物:具有抗癌潜力的天然化合物,对小鼠的生育能力和卵巢卵泡毒性低。
IF 1.6 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-10-21 eCollection Date: 2024-01-01 DOI: 10.1590/1984-3143-AR2024-0027
Gaby Judith Quispe Palomino, Homero Ygnacio Celiz, Francisco Denilson Rodrigues Gomes, Gildas Mbemya Tetaping, Marco Aurélio Schiavo Novaes, Késya Amanda Dantas Rocha, Ramon da Silva Raposo, Rebeca Magalhães Pedrosa Rocha, Ana Beatriz Graça Duarte, Otilia Deusdênia Loiola Pessoa, José Ricardo Figueiredo, Naiza Arcângela Ribeiro de Sá, Ana Paula Ribeiro Rodrigues

Anticancer therapy often leads to premature ovarian insufficiency (POI) and infertility due to the extreme sensitivity of the ovarian follicle reserve to the effects of chemotherapy. Withanolides are known for their cytotoxic effect on cancer cells and low cytotoxicity on non-malignant or healthy cells. Therefore, this study aimed to investigate the in vivo effects of three withanolides derivatives: 27-dehydroxy-24,25-epoxywithaferin A (WT1), 27-dehydroxywithaferin A (WT2), and withaferin A (WTA) on fertility, and the ovarian preantral follicles of young female mice. To achieve this, mice received 7 intraperitoneal doses of WT1, WT2, or WTA at a concentration of 2 mg/kg (Experiment I) and 5 or 10 mg/kg (Experiment II) over 15 alternate days. In experiment I, two days after administration of the last dose, half of the mice were mated to evaluate the effects of withanolides on fertility. The other half of the mice, as well as all mice from experiment II, were sacrificed for histological, inflammation, senescence, and immunohistochemical analyses of the follicles present in the ovary. Regardless of the administered withanolide, the concentration of 2 mg/kg did not show toxicity on the follicular morphology, ovarian function, or fertility of the mice. However, at concentrations of 5 and 10 mg/kg, the three derivatives (WT1, WT2, and WTA) increased follicular activation, cell proliferation, and ovarian senescence without affecting inflammatory cells. Furthermore, at a concentration of 10 mg/kg, the three withanolides showed intensified toxic effects, leading to DNA damage as evidenced by the labeling of γH2AX, activated Caspase 3, and TUNEL. We conclude that the cytotoxic effect of the tested withanolide derivatives (WT1, WT2, and WTA) in the concentration of 2 mg/kg did not show toxicity on the ovary. However, in higher concentrations, such as 10 mg/kg, toxic effects are potentiated, causing DNA damage.

由于卵泡储备对化疗的影响极为敏感,抗癌治疗往往会导致卵巢早衰(POI)和不孕症。已知睡茄素对癌细胞具有细胞毒性作用,而对非恶性或健康细胞的细胞毒性较低。因此,本研究旨在探讨三种睡茄素衍生物:27-脱羟基-24,25-环氧睡茄素 A(WT1)、27-脱羟基睡茄素 A(WT2)和睡茄素 A(WTA)对年轻雌性小鼠的生育能力和卵巢前胚泡的体内影响。为此,小鼠腹腔注射了 7 次浓度为 2 毫克/千克(实验 I)、5 或 10 毫克/千克(实验 II)的 WT1、WT2 或 WTA,每隔 15 天注射一次。在实验 I 中,最后一次给药两天后,一半的小鼠进行交配,以评估雄性激素对生育能力的影响。另一半小鼠和实验 II 中的所有小鼠被处死,对卵巢中的卵泡进行组织学、炎症、衰老和免疫组化分析。无论给药剂量是多少,2 毫克/千克的浓度都不会对小鼠的卵泡形态、卵巢功能或生育能力产生毒性。然而,在浓度为 5 毫克/千克和 10 毫克/千克时,三种衍生物(WT1、WT2 和 WTA)会增加卵泡活化、细胞增殖和卵巢衰老,但不会影响炎症细胞。此外,当浓度为 10 毫克/千克时,这三种山奈酚内酯的毒性作用增强,导致 DNA 损伤,γH2AX、活化的 Caspase 3 和 TUNEL 的标记证明了这一点。我们得出的结论是,浓度为 2 毫克/千克的受测香叶醇内酯衍生物(WT1、WT2 和 WTA)对卵巢没有细胞毒性作用。然而,在较高浓度(如 10 毫克/千克)下,毒性效应会增强,造成 DNA 损伤。
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引用次数: 0
First isolation and characterization of caprine oviduct fluid extracellular vesicles. 首次分离和鉴定黄羊输卵管液细胞外囊泡。
IF 1.6 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-10-21 eCollection Date: 2024-01-01 DOI: 10.1590/1984-3143-AR2024-0039
Roberto Mendes, Agostinho Soares de Alcântara, Gildas Mbemya Tetaping, Marco Aurélio Schiavo Novaes, Vanessa Barbosa Pinheiro Gonçalves, João Xavier da Silva, José Jonathas Albuquerque de Almeida, Maria Izabel Florindo Guedes, Luzia Kalyne Almeida Moreira Leal, Joanna Maria Gonçalves Souza-Fabjan, Roberto Nicolete, Deborah de Melo Magalhães Padilha, José Ricardo de Figueiredo, Ana Paula Ribeiro Rodrigues

Oviduct fluid extracellular vesicles (oEV) are essential for periconceptional events. The presence of EV has already been identified in the oviduct fluid (OF) from mammalian species, except in caprine. Therefore, this study aimed to isolate and characterize the caprine oEV (coEV). Initially, in Experiment 1, coEV were isolated from the OF of either each animal individually or from a pool of three animals. In experiment 2, coEV were isolated during the follicular or luteal phases of the estrous cycle. The coEV were characterized by size distribution, polydispersity index (PDI), and zeta potential using dynamic light scattering (DLS) analysis, as well as, by transmission electron microscopy (TEM) and dot blotting (DB). Our results indicated that the physicochemical characteristics of the coEV were similar (P > 0.05), regardless of the isolation method (individual or pool). However, coEV collected during the luteal phase were larger (P < 0.05) than those during the follicular phase. The TEM showed spherical and cup-shaped particles, characteristic of exosomes. The DB revealed the presence of exosomal proteins involved in the biogenesis of coEV. In conclusion, it is possible to isolate and characterize coEV from a single caprine female and the estrous cycle phase influences the vesicles average size and PDI.

输卵管液细胞外囊泡(oEV)对于围受精过程至关重要。在哺乳动物的输卵管液(OF)中已经发现了EV的存在,但黄羊除外。因此,本研究旨在分离和鉴定黄裘鼠的 oEV(coEV)。在实验 1 中,首先从每只动物的输卵管液或三只动物的输卵管液中分离 coEV。在实验 2 中,在发情周期的卵泡期或黄体期分离 coEV。利用动态光散射(DLS)分析法、透射电子显微镜(TEM)和点印迹法(DB)对 coEV 的大小分布、多分散指数(PDI)和 zeta 电位进行了表征。我们的结果表明,无论采用哪种分离方法(单个或集合),coEV 的理化特性都相似(P > 0.05)。然而,黄体期采集的 coEV 比卵泡期采集的 coEV 要大(P < 0.05)。TEM 显示了外泌体特有的球形和杯形颗粒。DB 揭示了参与 coEV 生物生成的外泌体蛋白的存在。总之,可以从单个雌性山羊体内分离并鉴定 coEV,发情周期阶段会影响囊泡的平均大小和 PDI。
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引用次数: 0
Combining two injectable progesterone formulas for estrous synchronization in ewes. 将两种可注射的黄体酮配方结合使用,实现母羊发情同步。
IF 1.6 4区 农林科学 Q2 AGRICULTURE, DAIRY & ANIMAL SCIENCE Pub Date : 2024-10-07 eCollection Date: 2024-01-01 DOI: 10.1590/1984-3143-AR2024-0073
Milena Luzorio Simões, Felipe Zandonadi Brandão, Juliana Dantas Rodrigues Santos, Pedro Henrique Nicolau Pinto, Ana Paula Pereira Schmidt, Camila Correa Roza Laeber, Nathália Dutra Knust, Mariana Garcia Kako Rodriguez, Danilo Fila, María Isabel Vázquez, Rodolfo Ungerfeld

The study aimed to evaluate the effectiveness of combining two injectable progesterone (iP4) formulas for estrous synchronization in ewes and to compare it with traditional intravaginal progesterone devices. Additionally, the study assessed whether the inclusion of GnRH enhances the reproductive outcomes of the iP4 treatment. Two experiments were conducted. In the first experiment, 20 Santa Inês ewes were divided into two groups: one group received intravaginal progesterone devices, and the other received combined long-acting and short-acting iP4. In the second experiment, 30 Corriedale ewes were divided into two groups: one received the combined iP4 with GnRH, and the other without GnRH. Estrous, ovulation, follicular populations, and progesterone concentrations were monitored. The combined iP4 treatment induced an artificial luteal phase and produced reproductive responses similar to those obtained with intravaginal devices. In the first experiment, the iP4 treatment tended to result in more synchronized ovulation compared to the control (P=0.095). In the second experiment, adding GnRH enhanced the quality of the corpus luteum, as indicated by increased diameter and vascularization on Day 23 (P=0.047 and P=0.02, respectively). The combined administration of long-acting and short-acting iP4 effectively synchronized estrous in ewes and showed similar efficacy to traditional intravaginal devices. The inclusion of GnRH improved luteal quality, suggesting potential benefits for reproductive management in ewes. Further studies are needed to evaluate the fertility outcomes of these protocols under field conditions.

该研究旨在评估结合两种注射用黄体酮(iP4)配方对母羊发情同步的有效性,并将其与传统的阴道内黄体酮装置进行比较。此外,该研究还评估了 GnRH 的加入是否能提高 iP4 治疗的繁殖效果。共进行了两次实验。在第一项实验中,20头Santa Inês母羊被分为两组:一组接受阴道内黄体酮装置,另一组接受长效和短效iP4联合治疗。在第二项实验中,30 只科里代尔母羊被分为两组:一组接受联合 iP4 和 GnRH,另一组不接受 GnRH。对发情、排卵、卵泡数量和孕酮浓度进行了监测。联合 iP4 治疗诱导了人工黄体期,并产生了与阴道内装置类似的生殖反应。在第一个实验中,与对照组相比,iP4 处理往往会导致更多的同步排卵(P=0.095)。在第二个实验中,添加 GnRH 可提高黄体的质量,这表现在第 23 天黄体直径和血管增加(分别为 P=0.047 和 P=0.02)。长效和短效iP4联合给药能有效地同步母羊的发情,其效果与传统的阴道内装置相似。GnRH的加入改善了黄体质量,这表明iP4对母羊的繁殖管理具有潜在的益处。还需要进一步研究,以评估这些方案在田间条件下的繁殖效果。
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引用次数: 0
期刊
Animal Reproduction
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