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Dolmatova LS, Smolina TP. Morphofunctional Features of Two Types of Phagocytes in the Holothurian Еupentacta fraudatrix (Djakonov et Baranova, 1958). J EVOL BIOCHEM PHYS+ 2022. [DOI: 10.1134/s0022093022040020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Dolmatova LS, Ulanova OA, Timchenko NF. Effect of a Heat-Stable Toxin of Yersinia pseudotuberculosis on the Functional and Phenotypic Traits of Two Types of Phagocytes in the Holothurian Eupentacta fraudatrix. BIOL BULL+ 2021. [DOI: 10.1134/s1062359021040051] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Massoud D, Lao-Pérez M, Ortega E, Burgos M, Jiménez R, Barrionuevo FJ. Divergent Seasonal Reproductive Patterns in Syntopic Populations of Two Murine Species in Southern Spain, Mus spretus and Apodemus sylvaticus. Animals (Basel) 2021; 11:ani11020243. [PMID: 33498171 PMCID: PMC7908971 DOI: 10.3390/ani11020243] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2020] [Revised: 01/16/2021] [Accepted: 01/16/2021] [Indexed: 02/08/2023] Open
Abstract
Simple Summary In temperate zones of the Earth, most species reproduce in seasons providing the most favourable environmental conditions. Producing gametes is expensive in energetical terms, so both males and females either reduce or abolish gametogenesis during the non-breeding period. We thoroughly studied the testes of sexually inactive males of two rodents, the wood mouse, Apodemus sylvaticus, and the Algerian mouse, Mus spretus, in southern Iberian peninsula. These populations are syntopic, that is, animals of the two species share their territories and resources, so one would expect them to show similar or identical seasonal reproduction patterns. Contrarily, we found that both species reproduce during most of the year, but wood mice stop breeding in the summer whereas Algerian mice do it in winter. These divergent seasonal breeding patterns imply that either very subtle animal features and/or environmental cues operate to determine reproduction timing and support the notion that multiple models of circannual reproduction patterns are possible for different populations of the same species, showing that the mechanisms controlling seasonal reproduction are in fact very plastic and fast evolving. Hence, small mammals probably have multiple ways available to get adapted to the unstable environmental conditions derived from the ongoing global climate change. Abstract In most mammals with seasonal reproduction, males undergo testis regression during the non-breeding period. We performed a morphological, hormonal, functional, and molecular study of the testes of sexually inactive males of two species of murine rodents, the wood mouse, Apodemus sylvaticus, and the Algerian mouse, Mus spretus, in syntopic populations of southern Iberian peninsula. Both species reproduce during most of the year, but wood mice stop breeding in the summer whereas Algerian mice do it in winter. Sexually inactive males of A. sylvaticus show complete testis regression with reduced levels of serum testosterone and abnormal distribution of cell-adhesion molecules. Contrarily, inactive males of M. spretus maintain almost normal spermotogenesis despite a significant reduction of androgenic function. The lack of an evident explanation for the divergent seasonal breeding patterns found in southern populations of A. sylvaticus and M. spretus, compared with northern ones, implies that very subtle species/population-specific features and/or non-conspicuous environmental cues probably operate to determine their seasonal breeding pattern. These results also support the notion that multiple models of circannual testis variation are possible for different populations of the same species, showing that the mechanisms controlling seasonal reproduction are in fact very plastic and fast evolving.
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Affiliation(s)
- Diaa Massoud
- Departamento de Genética e Instituto de Biotecnología, Lab. 127, Centro de Investigación Biomédica, Universidad de Granada, Avenida del Conocimiento S/N, 18016 Armilla, Granada, Spain; (D.M.); (M.L.-P.); (M.B.); (F.J.B.)
- Department of Zoology, Faculty of Science, Fayoum University, Gamma St., Keman Square, Fayoum 63514, Egypt
| | - Miguel Lao-Pérez
- Departamento de Genética e Instituto de Biotecnología, Lab. 127, Centro de Investigación Biomédica, Universidad de Granada, Avenida del Conocimiento S/N, 18016 Armilla, Granada, Spain; (D.M.); (M.L.-P.); (M.B.); (F.J.B.)
| | - Esperanza Ortega
- Departamento de Bioquímica y Biología Molecular III e Inmunología, Facultad de Medicina, Universidad de Granada, Avenida de la Investigación 11, 18071 Granada, Spain;
| | - Miguel Burgos
- Departamento de Genética e Instituto de Biotecnología, Lab. 127, Centro de Investigación Biomédica, Universidad de Granada, Avenida del Conocimiento S/N, 18016 Armilla, Granada, Spain; (D.M.); (M.L.-P.); (M.B.); (F.J.B.)
| | - Rafael Jiménez
- Departamento de Genética e Instituto de Biotecnología, Lab. 127, Centro de Investigación Biomédica, Universidad de Granada, Avenida del Conocimiento S/N, 18016 Armilla, Granada, Spain; (D.M.); (M.L.-P.); (M.B.); (F.J.B.)
- Correspondence:
| | - Francisco J. Barrionuevo
- Departamento de Genética e Instituto de Biotecnología, Lab. 127, Centro de Investigación Biomédica, Universidad de Granada, Avenida del Conocimiento S/N, 18016 Armilla, Granada, Spain; (D.M.); (M.L.-P.); (M.B.); (F.J.B.)
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Hassanzadeh_Taheri M, Hosseini M, Dorranipour D, Afshar M, Moodi H, Salimi M. The Oleo-Gum-Resin of Commiphora myrrha Ameliorates Male Reproductive Dysfunctions in Streptozotocin-Induced Hyperglycemic Rats. PHARMACEUTICAL SCIENCES 2019. [DOI: 10.15171/ps.2019.49] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Background: The oleo-gum-resin of Commiphora myrrha (myrrh) has a long history of therapeutic use in traditional medicine. The aim of this study was to seek for the scientific evidence to determine whether the ethanolic extract of myrrh (EEM) has any beneficial effects on Streptozotocin (STZ) induced testicular impairments, and explore the possible mechanisms underlying such actions. Methods: Forty-eight severe and complicated diabetic rats (fasting blood glucose above 350 mg/dL), randomly were divided into six equal groups (n=8). Besides, eight healthy rats allocated as a normal control group and only treated with vehicle solution. The diabetic animals orally received the extract (100, 200, 300, and 500 mg/kg), metformin (500 mg/kg) or vehicle solution for 28 days. As a final point, plasma glucose and insulin, circulatory sex hormones, sperm parameters including sperm concentration, motility and viability and also testicular malondialdehyde (MDA) levels were assessed. Furthermore, quantitative histological evaluation of seminiferous tubules area and determination of germinal cells apoptosis were performed. Results: None of the studied doses of EEM showed anti-diabetic effects. However, the extract mainly at the maximum dose (500 mg/kg) exhibited beneficial effects on reproductive impairments. The EEM treated rats mainly at 500 mg/kg had significantly higher sperm concentration, sperm motility, sperm viability, sex hormones and lower testicular MDA and germ cell apoptosis index than untreated diabetic rats. Conclusion: These results indicated that EEM may have beneficial effects against reproductive dysfunction induced by diabetes. The mechanisms behind the effects might be associated with the EEM sex hormone booster potential, antioxidant and anti-apoptotic properties.
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Affiliation(s)
- Mohammadmehdi Hassanzadeh_Taheri
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
- Department of Anatomy, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Mehran Hosseini
- Cellular and Molecular Research Center, Birjand University of Medical Sciences, Birjand, Iran
- Department of Anatomy, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Davood Dorranipour
- Department of Anatomy, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Mohammad Afshar
- Department of Anatomy, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Hesam Moodi
- Department of Anatomy, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
| | - Mojtaba Salimi
- Department of Anatomy, Faculty of Medicine, Birjand University of Medical Sciences, Birjand, Iran
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5
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Martínez-Hernández J, Seco-Rovira V, Beltrán-Frutos E, Ferrer C, Serrano-Sánchez MI, Pastor LM. Lectin-binding pattern of glycoconjugates during spontaneous testicular recrudescence in Syrian hamster (Mesocricetus auratus) after exposure to short photoperiod. Andrologia 2018; 51:e13148. [PMID: 30246471 DOI: 10.1111/and.13148] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Revised: 07/26/2018] [Accepted: 08/21/2018] [Indexed: 01/19/2023] Open
Abstract
Lectin histochemistry was used to characterise glycoconjugates and cellular apoptosis in the seminiferous epithelium and interstitium of hamster testis during spontaneous recrudescence. An increase in the LTA lectin affinity was observed in spermatids in the Golgi phase. An increase in labelling of PNA and Con-A lectin in acrosome of spermatids (acrosome phase) as well as increased labelling with Con-A in spermatids (cap phase) was observed. Spermatocytes showed decreased affinity with PNA and AAA lectins and an increase in positivity for LTA and GNA lectins. Spermatogonia showed a slight decrease in positivity to WGA and an increase in labelling with Con-A and a decreased affinity for the AAA lectin. At the end of recrudescence, all these germinal cells showed a similar pattern to the control. The Sertoli cells showed a gradual decrease in labelling with the GNA lectin and the Leydig cells an increase in labelling with Con-A and GNA. Particularly unusual was the observation of apoptotic spermatocytes and spermatids positive for PNA, GNA, AAA and Con-A, together with spermatocytes positive to LTA. In conclusion, the normal lectin pattern is recovered during testis recrudescence and germ cell apoptotic activity is low, as is observed by specific lectins for germ cells in apoptosis.
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Affiliation(s)
- Jesús Martínez-Hernández
- Department of Cell Biology and Histology, Medical School, IMIB-Arrixaca, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Murcia, Spain
| | - Vicente Seco-Rovira
- Department of Cell Biology and Histology, Medical School, IMIB-Arrixaca, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Murcia, Spain
| | - Ester Beltrán-Frutos
- Department of Cell Biology and Histology, Medical School, IMIB-Arrixaca, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Murcia, Spain
| | - Concepción Ferrer
- Department of Cell Biology and Histology, Medical School, IMIB-Arrixaca, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Murcia, Spain
| | - María Isabel Serrano-Sánchez
- Department of Cell Biology and Histology, Medical School, IMIB-Arrixaca, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Murcia, Spain
| | - Luis Miguel Pastor
- Department of Cell Biology and Histology, Medical School, IMIB-Arrixaca, Regional Campus of International Excellence "Campus Mare Nostrum", University of Murcia, Murcia, Spain
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Abstract
This review is devoted to the analytical application of carbohydrate-binding proteins called lectins. The nature of lectins and the regularities of their specificity with respect to simple sugars and complex carbohydrate-containing biomolecules are discussed. The main areas of the modern analytical application of lectins are described. Lectin-affinity chromatography, histo- and cytochemical approaches, lectin blotting, microarray, and biosensor technologies as well as microplate analysis are considered in detail. Data on the use of lectins for the detection of cells and microorganisms as well as the study of protein glycosylation are summarized. The large potential of lectins as components of analytical systems used for the identification of glycans and the characteristics of their structure are substantiated.
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Affiliation(s)
- O D Hendrickson
- a A.N. Bach Institute of Biochemistry, Federal Research Center "Fundamentals of Biotechnology" of the Russian Academy of Sciences, Leninsky Prospect , Moscow , Russia
| | - A V Zherdev
- a A.N. Bach Institute of Biochemistry, Federal Research Center "Fundamentals of Biotechnology" of the Russian Academy of Sciences, Leninsky Prospect , Moscow , Russia
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Beltrán-Frutos E, Seco-Rovira V, Martínez-Hernández J, Ferrer C, Pastor LM. Loss of hamster Leydig cells during regression after exposure to a short photoperiod. Reprod Fertil Dev 2018; 30:1137-1144. [DOI: 10.1071/rd17409] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2017] [Accepted: 01/10/2018] [Indexed: 11/23/2022] Open
Abstract
The aim of the present study was to evaluate the changes that occur in hamster Leydig cells during regression. Animals were divided into control, mild regression (MR), strong regression (SR) and total regression (TR) groups. Leydig cells were characterised by light and electron microscopy. Terminal deoxyribonucleotidyl transferase-mediated dUTP–digoxigenin nick end-labelling (TUNEL) and proliferating cell nuclear antigen (PCNA) antibodies were used to detect apoptosis and proliferation respectively. Three types of Leydig cells (A, B and C) could be differentiated. Type A cells were small in size compared with Leydig cells from animals exposed to a long photoperiod, which was a result of a decreased cytoplasm and nucleus. Type B cells were even smaller than Type A cells in regression groups. Type C exhibited cytoplasm vacuolisation. The percentage of Type C cells from the control group was much lower than in the MR, SR and TR groups. (P < 0.05). In the SR and TR groups, there was a significant decrease in the percentage of Type B cells compared with the control and MR groups (P < 0.05). The total number of Leydig cells decreased during testicular regression (P < 0.05). The total number of Type A and B cells was significantly lower in the MR, SR and TR groups compared with the control group (P < 0.05). There were no significant differences in the proliferation and apoptosis index in the groups studied. The findings of the present study indicate that there are three types of Leydig cells (A, B and C) in all hamsters studied and that regression causes an increase in the number of Type C cells, so that the reduction in the number Leydig cells during the phases of regression studied must be the result of necrosis and/or necroptosis.
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Aliabadi E, Jahanshahi S, Talaei-Khozani T, Banaei M. Comparison and evaluation of capacitation and acrosomal reaction in freeze-thawed human ejaculated spermatozoa treated with L-carnitine and pentoxifylline. Andrologia 2017; 50. [DOI: 10.1111/and.12845] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/20/2017] [Indexed: 11/30/2022] Open
Affiliation(s)
- E. Aliabadi
- Anatomy department; Shiraz University of Medical Sciences; Shiraz Iran
| | - S. Jahanshahi
- Anatomy department; Shiraz University of Medical Sciences; Shiraz Iran
| | - T. Talaei-Khozani
- Anatomy department; Shiraz University of Medical Sciences; Shiraz Iran
| | - M. Banaei
- Anatomy department; Shiraz University of Medical Sciences; Shiraz Iran
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Seco-Rovira V, Beltrán-Frutos E, Martínez-Hernández J, Ferrer C, Pastor LM. The Use of Lectin Histochemistry for Detecting Apoptotic Cells in the Seminiferous Epithelium. Methods Mol Biol 2017; 1560:133-144. [PMID: 28155150 DOI: 10.1007/978-1-4939-6788-9_9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/08/2022]
Abstract
Lectin histochemistry is commonly used to characterize the pattern of glycoconjugates in cells and tissues. Recent studies show that alterations in these glycoconjugates are associated with the entry of cells into apoptosis. A widely used technique for the detection of apoptotic cell death is TUNEL. In this chapter, we study the sensitivity of both techniques to identify apoptotic cells in the testis of photo-inhibited Syrian hamster.
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Affiliation(s)
- Vicente Seco-Rovira
- Department of Cell Biology and Histology, School of Medicine, IMIB-Arrixaca, University of Murcia, Regional Campus of International Excellence, Campus Mare Nostrum, Espinardo, Murcia, 30100, Spain
| | - Ester Beltrán-Frutos
- Department of Cell Biology and Histology, School of Medicine, IMIB-Arrixaca, University of Murcia, Regional Campus of International Excellence, Campus Mare Nostrum, Espinardo, Murcia, 30100, Spain
| | - Jesús Martínez-Hernández
- Department of Cell Biology and Histology, School of Medicine, IMIB-Arrixaca, University of Murcia, Regional Campus of International Excellence, Campus Mare Nostrum, Espinardo, Murcia, 30100, Spain
| | - Concepción Ferrer
- Department of Cell Biology and Histology, School of Medicine, IMIB-Arrixaca, University of Murcia, Regional Campus of International Excellence, Campus Mare Nostrum, Espinardo, Murcia, 30100, Spain
| | - Luis Miguel Pastor
- Department of Cell Biology and Histology, School of Medicine, IMIB-Arrixaca, University of Murcia, Regional Campus of International Excellence, Campus Mare Nostrum, Espinardo, Murcia, 30100, Spain.
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Ahmed N, Yufei H, Yang P, Muhammad Yasir W, Zhang Q, Liu T, Hong C, Lisi H, Xiaoya C, Chen Q. Cytological study on Sertoli cells and their interactions with germ cells during annual reproductive cycle in turtle. Ecol Evol 2016; 6:4050-64. [PMID: 27516863 PMCID: PMC4972231 DOI: 10.1002/ece3.2193] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2016] [Revised: 04/07/2016] [Accepted: 04/26/2016] [Indexed: 12/20/2022] Open
Abstract
Sertoli cells (SCs) play a central role in the development of germ cells within functional testes and exhibit varying morphology during spermatogenesis. This present study investigated the seasonal morphological changes in SCs in the reproductive cycle of Pelodiscus sinensis by light microscopy, transmission electron microscopy (TEM), and immunohistochemistry. During hibernation period with the quiescent of spermatogenesis, several autophagosomes were observed inside the SCs, the processes of which retracted. In early spermatogenesis, when the germ cells started to proliferate, the SCs contained numerous lipid droplets instead of autophagosomes. In late spermatogenesis, the SCs processes became very thin and contacted several round/elongated spermatids in pockets. At this time, abundant endoplasmic reticulum and numerous mitochondria were present in the SCs. The organization of the tight junctions and the adherens junctions between the SCs and germ cells also changed during the reproductive cycle. Moreover, SCs were involved in the formation of cytoplasmic bridges, phagophores, and exosome secretions during spermatogenesis. Tubulobulbar complexes (TBC) were also developed by SCs around the nucleus of the spermatid at the time of spermiation. Strong, positive expression of vimentin was noted on the SCs during late spermatogenesis compared with the hibernation stage and the early stage of spermatogenesis. These data provide clear cytological evidence about the seasonal changes in SCs, corresponding with their different roles in germ cells within the Chinese soft‐shelled turtle Pelodiscus sinensis.
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Affiliation(s)
- Nisar Ahmed
- Laboratory of Animal Cell Biology and Embryology College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China; Faculty of Veterinary and Animal Sciences LUAWMS Uthal 90150 Pakistan
| | - Huang Yufei
- Laboratory of Animal Cell Biology and Embryology College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China
| | - Ping Yang
- Laboratory of Animal Cell Biology and Embryology College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China
| | - Waqas Muhammad Yasir
- Laboratory of Animal Cell Biology and Embryology College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China
| | - Qian Zhang
- Laboratory of Animal Cell Biology and Embryology College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China
| | - Tengfei Liu
- Laboratory of Animal Cell Biology and Embryology College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China
| | - Chen Hong
- Laboratory of Animal Cell Biology and Embryology College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China
| | - Hu Lisi
- Laboratory of Animal Cell Biology and Embryology College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China
| | - Chu Xiaoya
- Laboratory of Animal Cell Biology and Embryology College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China
| | - Qiusheng Chen
- Laboratory of Animal Cell Biology and Embryology College of Veterinary Medicine Nanjing Agricultural University Nanjing 210095 China
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Dan X, Liu W, Ng TB. Development and Applications of Lectins as Biological Tools in Biomedical Research. Med Res Rev 2015; 36:221-47. [PMID: 26290041 DOI: 10.1002/med.21363] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2015] [Revised: 07/15/2015] [Accepted: 07/16/2015] [Indexed: 01/08/2023]
Abstract
As a new and burgeoning area following genomics and proteomics, glycomics has become a hot issue due to its pivotal roles in many physiological and pathological processes. Glycans are much more complicated than genes or proteins since glycans are highly branched and dynamic. Antibodies and lectins are the two major molecular tools applied for glycan profiling. Though the study of antibodies and lectins started at almost the same time in 1880s, lectins gained much less attention than the antibodies until recent decades when the importance and difficulties of glycomics were realized. The present review summarizes the discovery history of lectins and their biological functions with a special emphasis on their various applications as biological tools. Both older techniques that had been developed in the last century and new technologies developed in recent years, especially lectin microarrays and lectin-based biosensors, are included in this account.
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Affiliation(s)
- Xiuli Dan
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong
| | - Wenlong Liu
- Department of Orthopaedics & Traumatology, LKS Faculty of Medicine, The University of Hong Kong, Pokfulam, Hong Kong
| | - Tzi Bun Ng
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Shatin, Hong Kong
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Seco-Rovira V, Beltrán-Frutos E, Ferrer C, Saez FJ, Madrid JF, Canteras M, Pastor LM. Testicular histomorphometry and the proliferative and apoptotic activities of the seminiferous epithelium in Syrian hamster (Mesocricetus auratus) during regression owing to short photoperiod. Andrology 2015; 3:598-610. [DOI: 10.1111/andr.12037] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2014] [Revised: 02/09/2015] [Accepted: 03/05/2015] [Indexed: 12/13/2022]
Affiliation(s)
- V. Seco-Rovira
- Department of Cell Biology and Histology; Medical School; IMIB-Arrixaca; Regional Campus of International Excellence Campus Mare Nostrum, University of Murcia; Murcia Spain
| | - E. Beltrán-Frutos
- Department of Cell Biology and Histology; Medical School; IMIB-Arrixaca; Regional Campus of International Excellence Campus Mare Nostrum, University of Murcia; Murcia Spain
| | - C. Ferrer
- Department of Cell Biology and Histology; Medical School; IMIB-Arrixaca; Regional Campus of International Excellence Campus Mare Nostrum, University of Murcia; Murcia Spain
| | - F. J. Saez
- Department of Cell Biology and Histology UFI 11/44; School of Medicine and Dentistry; University of the Basque Country UPV/EHU; Leioa Spain
| | - J. F. Madrid
- Department of Cell Biology and Histology; Medical School; IMIB-Arrixaca; Regional Campus of International Excellence Campus Mare Nostrum, University of Murcia; Murcia Spain
| | - M. Canteras
- Department of Statistics; Medical School; University of Murcia; Murcia Spain
| | - L. M. Pastor
- Department of Cell Biology and Histology; Medical School; IMIB-Arrixaca; Regional Campus of International Excellence Campus Mare Nostrum, University of Murcia; Murcia Spain
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de Brito Ximenes P, Beltrão EIC, Macêdo DPC, Buonafina MDS, de Lima-Neto RG, Neves RP. Targeting the Cryptococcus neoformans var. grubii cell wall using lectins: study of the carbohydrate-binding domain. Molecules 2015; 20:3776-82. [PMID: 25723851 PMCID: PMC6272190 DOI: 10.3390/molecules20033776] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2014] [Revised: 01/09/2015] [Accepted: 01/16/2015] [Indexed: 01/21/2023] Open
Abstract
Cryptococcus neoformans var. grubii is considered to be the major cause of cryptococcosis in immunosuppressed patients. Understanding cell wall glycoproteins using lectins is of medical interest and can contribute to specific therapy. The aim of this study was to evaluate the carbohydrates on the cell wall of Cryptococcus neoformans var. grubii clinical isolates, using a fluorescein isothiocyanate-lectin binding protocol. Thirty yeast strains stocked in the culture collection were cultivated for 2 days at 30 °C with shaking. Cells were obtained by centrifugation, washed in phosphate-buffered saline, and a suspension of 107 cells/mL was obtained. To determine the binding profile of lectins, concanavalin A (Con A), wheat germ agglutinin (WGA), Ulex europaeus agglutinin I (UEA-I), and peanut agglutinin (PNA) conjugated to fluorescein were used. All the tested clinical isolates of Cryptococcus neoformans var. grubii were intensely stained by WGA, moderately stained by Con A, and weakly stained by PNA and UEA-I. Thus, Cryptococcus can be detected in clinical specimens such as blood and cerebrospinal fluid using the fluorescent lectin WGA, which may be considered as an option for detection in cases of suspected cryptococcosis with low laboratory sensitivity. Future applications may be developed using this basic tool.
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Affiliation(s)
- Pamella de Brito Ximenes
- Department of Mycology, Universidade Federal de Pernambuco (UFPE), Av. Prof. Nelson Chaves, s/n°-Cidade Universitária, Recife 50670-420, Brazil.
| | - Eduardo Isidoro Carneiro Beltrão
- Department of Biochemistry, Universidade Federal de Pernambuco (UFPE), Av. Prof. Nelson Chaves, s/n°-Cidade Universitária, Recife 50670-420, Brazil.
| | - Danielle Patrícia Cerqueira Macêdo
- Department of Pharmaceutical Sciences, Universidade Federal de Pernambuco (UFPE), Av. Prof. Nelson Chaves, s/n°-Cidade Universitária, Recife 50670-420, Brazil.
| | - Maria Daniela Silva Buonafina
- Department of Mycology, Universidade Federal de Pernambuco (UFPE), Av. Prof. Nelson Chaves, s/n°-Cidade Universitária, Recife 50670-420, Brazil.
| | - Reginaldo Gonçalves de Lima-Neto
- Department of Tropical Medicine, Universidade Federal de Pernambuco (UFPE), Av. Prof. Nelson Chaves, s/n°-Cidade Universitária, Recife 50670-420, Brazil.
| | - Rejane Pereira Neves
- Department of Mycology, Universidade Federal de Pernambuco (UFPE), Av. Prof. Nelson Chaves, s/n°-Cidade Universitária, Recife 50670-420, Brazil.
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Seco-Rovira V, Beltrán-Frutos E, Ferrer C, Sáez FJ, Madrid JF, Pastor LM. The death of sertoli cells and the capacity to phagocytize elongated spermatids during testicular regression due to short photoperiod in Syrian hamster (Mesocricetus auratus). Biol Reprod 2014; 90:107. [PMID: 24719257 DOI: 10.1095/biolreprod.113.112649] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
In the Syrian hamster (Mesocricetus auratus), an animal that displays testicular regression due to short photoperiod, germ cells are removed by apoptosis during this process and the apoptotic remains are phagocytized by Sertoli cells. The aim of this work was to investigate morphologically whether the testicular regression process due to short photoperiod leads to the apoptosis of Sertoli cells, and whether, during testicular regression, the elongated spermatids are eliminated through phagocytosis by Sertoli cells. To this end, we studied testis sections during testicular regression in Syrian hamster subjected to short photoperiod by means of several morphological techniques using conventional light microscopy (hematoxylin and eosin [H&E], semi-thin section vimentin, immunohistochemistry, SBA lectin, and TUNEL staining), fluorescence microscopy, and transmission electron microscopy (TEM). H&E and semi-thin sections identified Sertoli cells with a degenerated morphology. Greater portion of Sertoli cells that were positive for TUNEL staining were observed especially during the mild regression (MR) and strong regression (SR) phases. In addition, TEM identified the characteristic apoptotic changes in the nucleus and cytoplasm of Sertoli cells. Moreover, during testicular regression and using light microscopy, some elongated spermatids were seen in basal position next to the Sertoli cell nucleus. This Sertoli phagocytic activity was higher in MR and SR phases. TEM confirmed this to be the result of the phagocytic activity of Sertoli cells. In conclusion, during testicular regression in Syrian hamster due to short photoperiod, when germ cells are known to be lost through apoptosis, there is morphological evidences that Sertoli cells are also lost through apoptosis, while some elongated spermatids are phagocytized and eliminated by the Sertoli cells.
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Affiliation(s)
- Vicente Seco-Rovira
- Department of Cell Biology and Histology, Medical School, Instituto Murciano de Investigación Biosanitaria, Regional Campus of International Excellence "Campus Mare Nostrum," University of Murcia, Murcia, Spain
| | - Esther Beltrán-Frutos
- Department of Cell Biology and Histology, Medical School, Instituto Murciano de Investigación Biosanitaria, Regional Campus of International Excellence "Campus Mare Nostrum," University of Murcia, Murcia, Spain
| | - Concepción Ferrer
- Department of Cell Biology and Histology, Medical School, Instituto Murciano de Investigación Biosanitaria, Regional Campus of International Excellence "Campus Mare Nostrum," University of Murcia, Murcia, Spain
| | - Francisco José Sáez
- Department of Cell Biology and Histology Unidad de Formación e Investigación 11/44, School of Medicine and Dentistry, University of the Basque Country Universidad del País Vasco/Euskal Herrico Unibertsitatea, Leioa, Spain
| | - Juan Francisco Madrid
- Department of Cell Biology and Histology, Medical School, Instituto Murciano de Investigación Biosanitaria, Regional Campus of International Excellence "Campus Mare Nostrum," University of Murcia, Murcia, Spain
| | - Luis Miguel Pastor
- Department of Cell Biology and Histology, Medical School, Instituto Murciano de Investigación Biosanitaria, Regional Campus of International Excellence "Campus Mare Nostrum," University of Murcia, Murcia, Spain
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