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Cano M, De la Haba J, Porras I, Morales C, Pulido G, Jimenez J, Aranda E. Relationship of PTEN expression with trastuzumab resistance. J Clin Oncol 2010. [DOI: 10.1200/jco.2010.28.15_suppl.e13152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
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Mayoral M, Ovejero P, Campo J, Heras J, Pinilla E, Torres M, Cano M. Ionic liquid crystals from β-diketonyl containing pyridinium cations and tetrachlorozincate anions. INORG CHEM COMMUN 2009. [DOI: 10.1016/j.inoche.2008.12.016] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Benito P, De Juan A, Cano M, Elena E. Reconstruction of an extensive perineal defect using two modified V-Y flaps based on perforators from the gluteus maximus muscle. J Plast Reconstr Aesthet Surg 2008; 61:e1-4. [PMID: 17669704 DOI: 10.1016/j.bjps.2007.06.012] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2006] [Accepted: 06/11/2007] [Indexed: 11/20/2022]
Abstract
SUMMARY We report the case of a women with severe perineal defect secondary to a perianal cancer that required reconstruction from the posterior wall of the urinary bladder to the coccyx, and which laterally surpassed both ischial tuberosities. For this reconstructive work, we used two V-Y advanced flaps taken from the gluteal region. On the basis of these flaps, we modified the final position in the advance of the lateral ends, crossing the tips of each flap over each other to provide a greater volume of tissue in the central area, with no signs of vascular injury. We believe that the use of V-Y flaps, based on the perforating arteries of the gluteus maximus, allows the reconstruction of especially extensive defects in the perineal region. The technique is rapid and easy perform, and produces acceptable clinical outcome and minimum morbidity.
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Valenzuela O, Morán P, Gómez A, Cordova K, Corrales N, Cardoza J, Gómez N, Cano M, Ximénez C. Epidemiology of amoebic liver abscess in Mexico: the case of Sonora. ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY 2008; 101:533-8. [PMID: 17716437 DOI: 10.1179/136485907x193851] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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Calvo J, Cano M, Marìn M, Cercenado E, Martinez-Martinez L. P887 Linezolid resistance in clinical isolates of Staphylococcus haemolyticus. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)70728-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Agüero J, Ortega M, Cano M, González de Aledo A, Calvo J, Viloria L, Mellado P, Pelayo T, Martinez-Martinez L. P1426 Microbiological aspects of a Streptococcus pyogenes outbreak causing invasive disease in children attending a day care centre in Cantabria, Spain. Int J Antimicrob Agents 2007. [DOI: 10.1016/s0924-8579(07)71265-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Torralba M, Cano M, Campo J, Heras J, Pinilla E, Torres M. Pyrazole-based allylpalladium complexes: Supramolecular architecture and liquid crystal behaviour. INORG CHEM COMMUN 2006. [DOI: 10.1016/j.inoche.2006.07.043] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Torralba M, Cano M, Campo J, Heras J, Pinilla E, Torres M, Perles J, Ruiz-Valero C. Molecular architectures of cationic [Pd(η3-C3H5)(pzbp2py)]+ complexes and and as counteranions (pzbp2py=2-[3,5-bis(4-butoxyphenyl)pyrazol-1-yl]pyridine). J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2005.12.071] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Torralba M, Cano M, Campo J, Heras J, Pinilla E, Torres M. Liquid crystal behaviour of ionic allylpalladium complexes containing 2-pyrazolylpyridine as bidentate N,N′-ligand. J Organomet Chem 2006. [DOI: 10.1016/j.jorganchem.2005.09.053] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Gehlbach P, Hose S, Lei B, Zhang C, Cano M, Arora M, Neal R, Barnstable C, Goldberg MF, Zigler JS, Sinha D. Developmental abnormalities in the Nuc1 rat retina: a spontaneous mutation that affects neuronal and vascular remodeling and retinal function. Neuroscience 2005; 137:447-61. [PMID: 16289888 DOI: 10.1016/j.neuroscience.2005.08.084] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2005] [Revised: 08/17/2005] [Accepted: 08/30/2005] [Indexed: 11/18/2022]
Abstract
The retina serves as an excellent model in which to study vertebrate CNS development. We have discovered a spontaneous mutation in the Sprague-Dawley rat that results in a novel and unusual ocular phenotype, including retinal abnormalities, that we have named Nuc1. We have previously shown that the Nuc1 mutation appears to suppress programmed cell death in the developing retina. Here we report that maturation of both the retinal neurons and the retinal vessels is abnormal in Nuc1 homozygous rats. The developmental changes in the retinal neurons and vasculature are correlated with regard to degree of abnormality. As Nuc1 homozygotes mature, focal retinal detachment begins at approximately 3 months after birth, and near total traction retinal detachment, associated with pre-retinal fibrosis and neovascularization, is evident by 18 months. Electroretinographic studies at 2.5 months of age indicate that functional retinal degeneration precedes retinal detachment. The functional abnormality is most evident in rods and the inner retina, and is present in homozygous but not heterozygous mutants. Immunocytochemical studies of rod and cone photoreceptors indicate abnormalities in rod, but not cone, photoreceptors in Nuc1 homozygotes, consistent with the electroretinographic findings. In Nuc1 animals, the Muller cells are activated. Although such activation may result from inflammation, Muller cells in Nuc1 may be reacting to a neuronal influence. It appears that the Nuc1 mutation plays a regulatory role in both developing and maturing ocular tissues. The Nuc1 mutation may also serve as an important genetic tool to explore the relationships that may exist among gliosis, normal neuronal development, and normal vascular development and how abnormalities in these associations lead to common retinal diseases.
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Torralba MC, Cano M, Campo JA, Heras JV, Pinilla E. Crystal structure of trans-dichlorobis[3-(4-octyloxyphenyl)pyrazole]· palladium(II), PdCl2(C17H24N2O)2. Z KRIST-NEW CRYST ST 2005. [DOI: 10.1524/ncrs.2005.220.14.645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Ledón N, Romay C, Rodríguez V, Cruz J, Rodríguez S, Ancheta O, González A, González R, Tolón Z, Cano M, Rojas E, Capote A, Valdes T. Further studies on a mixture of fatty acids from sugar cane (Saccharum officinarum) wax oil in animal models of hypersensitivity. PLANTA MEDICA 2005; 71:126-129. [PMID: 15729619 DOI: 10.1055/s-2005-837778] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
A mixture of fatty acids obtained from sugar cane wax oil, the main components of which are palmitic, oleic, linoleic and linolenic acids, was evaluated topically in two experimental models of hypersensitivity: the ear swelling response to ovalbumin in sensitized mice (ED50 edema: 0.63 +/- 0.06 mg/ear, ED50 myeloperoxidase: 0.56 +/- 0.04 mg/ear, ED50 degranulated cells: 0.70 +/- 0,08 mg/ear) and oxazolone-induced contact hypersensitivity in mice (ED50 edema: 1.63 +/- 0.26 mg/ear, ED50 myeloperoxidase: 1.50 +/- 0.28 mg/ear, ED50 degranulated cells: 1.69 +/- 0.08 mg/ear). Also, the effect of this mixture was studied on the chemotaxis induced by fmlp (ED50: 25 +/- 3 microg/mL). The mixture showed anti-inflammatory activity in both in vivo models of allergy and in the chemotaxis test. Therefore, these results provide evidence about the potential usefulness of the mixture of fatty acids from sugar cane wax oil in cutaneous inflammatory and allergic disorders.
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Ruiz de Ybáñez MR, Goyena M, Abaigar T, Garijo MM, Martínez-Carrasco C, Espeso G, Cano M, Ortiz JM. Periparturient increase in faecal egg counts in a captive population of mohor gazelle (Gazella dama mhorr). Vet Rec 2004; 154:49-52. [PMID: 14758830 DOI: 10.1136/vr.154.2.49] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
The objective of this study was to assess whether there was a periparturient rise in the faecal egg output of a population of North African gazelles (Gazella dama mhorr) kept in captivity in Almeria, southern Spain. In one experiment faeces were collected from 47 female gazelles on three days in winter, in November and December 1995 and January 1996; in a second experiment faecal samples were collected from nine pregnant gazelles at weekly intervals from July 1996 to June 1997. The mean trichostrongylid faecal egg counts were significantly higher (P < 0.05) in the periparturient gazelles than in the pregnant and non-pregnant animals only when the births took place in winter. Other factors, including the gazelle's age, its level of inbreeding, the number of previous births, and its trichostrongylid egg output at the beginning of the study did not affect whether it showed a periparturient rise. The parasites responsible for the rise were different in the two experiments.
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Torralba M, Cano M, Gómez S, Campo J, Heras J, Perles J, Ruiz-Valero C. Bridged 3,5-disubstituted pyrazolate ligands as support of metallomesogens containing [Pd(η3-C3H5)]+ fragments. J Organomet Chem 2003. [DOI: 10.1016/s0022-328x(03)00669-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mayoral M, Torralba M, Cano M, Campo J, Heras J. Pyridylpyrazole derivatives. A new type of mesogenic bidentate ligands inducing mesomorphism on their related PdX2 complexes. INORG CHEM COMMUN 2003. [DOI: 10.1016/s1387-7003(03)00053-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Ledón N, Casacó A, Rodríguez V, Cruz J, González R, Tolón Z, Cano M, Rojas E. Anti-inflammatory and analgesic effects of a mixture of fatty acids isolated and purified from sugar cane wax oil. PLANTA MEDICA 2003; 69:367-369. [PMID: 12709906 DOI: 10.1055/s-2003-38880] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/24/2023]
Abstract
The anti-inflammatory and analgesic effects of FAM, a defined mixture of fatty acids isolated from sugar cane (Saccharum officinarum L.), was evaluated. Oral administration of this mixture showed anti-inflammatory activity in the cotton pellet granuloma assay and in the carrageenin-induced pleurisy test, both in rats, as well as in the peritoneal capillary permeability test in mice. In addition, FAM showed analgesic properties in the hot-plate model and in the acetic acid-induced writhings test, both in mice. In conclusion, these results provide evidence on the potential usefulness of the mixture of fatty acids from sugar cane wax oil in inflammatory disorders.
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Acha O, Hernández JL, Penado S, Cano M, Riancho JA. [Risk factors and stroke among patients of different ages]. Rev Clin Esp 2003; 203:189-92. [PMID: 12681202 DOI: 10.1157/13045539] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVE To determine the frequency of cardiovascular risk factors in patients of different ages with ischemic cerebrovascular accident.Patients and methods. Descriptive, retrospective study of 1,077 patients with stroke or transient ischemic attack. RESULTS Arterial hypertension (49%-67%) and atrial fibrillation (38%-46%) were the most prevalent risk factors in men and women aged over 65 years. Among individuals aged less than 65 years, smoking in men (58%) and arterial hypertension (64%) and hyperlipidemia (36%) in women predominated. Atrial fibrillation was particularly frequent in patients aged over 80 years (46% in men and 52% in women). CONCLUSION On the basis of the high prevalence of arterial hypertension and atrial fibrillation in these patients, the appropriate management of these conditions should by a priority for the prevention of cerebrovascular diseases, especially in advanced aged patients.
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Ghannoum M, Isham N, Hajjeh R, Cano M, Al-Hasawi F, Yearick D, Warner J, Long L, Jessup C, Elewski B. Tinea capitis in Cleveland: survey of elementary school students. J Am Acad Dermatol 2003; 48:189-93. [PMID: 12582387 DOI: 10.1067/mjd.2003.109] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
BACKGROUND Tinea capitis, a fungal infection of the scalp, is of increasing public health importance, and Trichophyton tonsurans has become the primary causative agent in North America. OBJECTIVES To determine the prevalence of dermatophyte-positive scalp cultures among elementary schoolchildren in Cleveland, Ohio, describe predisposing factors, and measure the antifungal susceptibility of isolates collected. OBSERVATIONS A total of 937 children from 8 Cleveland elementary schools were cultured for the presence of dermatophytes; 122 children (13%), all of whom were African American, had dermatophyte-positive cultures of the scalp. Sixty percent of cases were asymptomatic, indicating a carrier state. Race, scaling, and the use of anti-dandruff shampoo were associated with increased likelihood of infection. T tonsurans was the only organism isolated (except 1 Microsporum canis isolate). All isolates were susceptible to fluconazole, griseofulvin, itraconazole, and terbinafine. CONCLUSIONS T tonsurans was the predominant dermatophyte isolated. Further multicenter studies are needed to confirm the predominance of dermatophyte-positive scalp cultures among African American children and to determine modifiable and preventable risk factors.
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Cano M, Balasubramanian S. From the combinatorial chemistry boom to polymer-supported parallel chemistry: established technologies for drug discovery. DRUG FUTURE 2003. [DOI: 10.1358/dof.2003.028.07.857183] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Torralba M, Cano M, Campo J, Heras J, Pinilla E, Torres M. Mesogenic Pd(II) complexes based on 3-substituted pyrazol ligands. INORG CHEM COMMUN 2002. [DOI: 10.1016/s1387-7003(02)00596-8] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Torralba M, Cano M, Campo J, Heras J, Pinilla E, Torres M. Chemistry of Rh(I) complexes based on mesogenic 3,5-disubstituted pyrazole ligands. X-ray crystal structures of 3,5-di(4-n-butoxyphenyl)pyrazole (Hpzbp2) and [Rh(μ-pzR2)(CO)2]2 (R=C6H4OCnH2n+1, n=10, 12) compounds. Part II. J Organomet Chem 2002. [DOI: 10.1016/s0022-328x(02)01400-6] [Citation(s) in RCA: 40] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Ortiz J, Ruiz de Ybáñez MR, Garijo MM, Goyena M, Espeso G, Abáigar T, Cano M. Abomasal and small intestinal nematodes from captive gazelles in Spain. J Helminthol 2001; 75:363-5. [PMID: 11818055] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
Abstract
The abomasal and small intestinal helminth fauna of three species of captive gazelles (Gazella dama mhorr, G. cuvieri and G. dorcas neglecta) kept in captivity in Almería (southeast Spain) have been studied, and the following species were identified: Nematodirus spathiger, N. filicollis, N. helvetianus, Camelostrongylus mentulatus, Trichostrongylus vitrinus, T. probolurus, T. colubriformis, Ostertagia ostertagi, O. harrisi, Teladorsagia (Ostertagia) circumcincta, and T. (Ostertagia) davtiani. Camelostrongylus mentulatus and N. spathiger were the most prevalent and abundant parasites. Ostertagia ostertagi, O. harrisi, N. helvetianus, and T. (Ostertagia) davtiani were identified for the first time in the genus Gazella. In addition, O. harrisi and Trichostrongylus probolurus are new records for Spain.
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Cano M, Arnold LL, Cohen SM. Evaluation of diet and dimethylarsinic acid on the urothelium of Syrian golden hamsters. Toxicol Pathol 2001; 29:600-6. [PMID: 11794375 DOI: 10.1080/019262301753385924] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
Few studies have examined the carcinogenicity of chemicals toward the urinary bladder in hamsters, and the effect of diet on hamster urine and urothelium has not been reported. Our laboratory recently began investigating the effects of dimethylarsinic acid (DMA) on the hamster bladder, and we noticed subtle urothelial changes even in controls. The possible effect of various diets on hamster urothelium was evaluated by feeding different diets to 4-week-old Syrian Golden hamsters for 5 weeks. The diets examined were Tekland 8656, Purina 5002, Purina 5L79, and NIH-07. Light microscopic examination showed a slight increase in urothelial hyperplasia in hamsters fed Purina 5L79. An increase in the incidence of urinary bladder necrosis, exfoliation, and mild hyperplasia were noted by scanning electron microscopy (SEM) with all dietary preparations except NIH-07. The constituents in the diets producing the urothelial alterations are not known at present, but NIH-07 diet was chosen for experiments to investigate the effects of DMA on the hamster bladder epithelium. Male and female 5-week-old Syrian Golden hamsters were fed 100 ppm DMA for 10 weeks. Examination of urinary parameters showed no treatment-related changes. Light microscopic examination and SEM revealed no changes of the urothelium of DMA-treated male or female hamsters.
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Pickard AR, Abáigar T, Green DI, Holt WV, Cano M. Hormonal characterization of the reproductive cycle and pregnancy in the female Mohor gazelle (Gazella dama mhorr). Reproduction 2001; 122:571-80. [PMID: 11570964 DOI: 10.1530/rep.0.1220571] [Citation(s) in RCA: 34] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The oestrous cycles of seven captive Mohor Gazelles (Gazella dama mhorr) were investigated. Hormone profiles obtained from faecal samples collected each day from cyclic females indicated that the mean duration of the oestrous cycle was 18.62 +/- 0.26 days (range 16-22 days; n = 37 oestrous cycles). No inter-individual differences in the concentration of faecal progestagen metabolites excreted were observed, but mean faecal oestrogen excretion during both the luteal and inter-luteal phases of the oestrous cycle varied among females (P < 0.001 and P = 0.070, respectively). Oestrous cycles were synchronized using controlled internal drug release (CIDR) devices, before natural mating with an intact male. Concentrations of faecal progestagen metabolites remained approximately constant for the first 10 weeks of gestation (mean +/- SEM = 4048 +/- 407 ng g(-1) faeces), before increasing to a mean of 23 556 +/- 1176 ng g(-1) faeces. Two of seven female gazelles conceived immediately after removal of the CIDR device, a similar proportion to that conceived at the postpartum oestrus under natural conditions. Life history data for these individuals indicated that the mean time to conception in female gazelles is positively correlated with peak values in the ratio of excreted oestrogen : progestagen during the inter-luteal period of their oestrous cycles (R(2) = 0.58; P < 0.05). This finding indicates that interactions between steroid production and metabolism may influence the likelihood of conception occurring in this species.
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Abaigar T, Cano M, Pickard AR, Holt WV. Use of computer-assisted sperm motility assessment and multivariate pattern analysis to characterize ejaculate quality in Mohor gazelles (Gazella dama mhorr): effects of body weight, electroejaculation technique and short-term semen storage. Reproduction 2001; 122:265-73. [PMID: 11467977 DOI: 10.1530/rep.0.1220265] [Citation(s) in RCA: 46] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Subjective and objective semen assessments were performed on 18 male Mohor gazelles (Gazella dama mhorr). Sperm motility assessments combined with sperm plasma membrane and acrosomal integrity evaluations were undertaken as part of a captive breeding programme. The primary objective was to test methodology for short-term preservation of gazelle semen for artificial insemination (storage in N-[Tris(hydroxymethyl)methyl]-2-aminoethanesulphonic acid-Tris diluent (TEST) for up to 96 h at 17 degrees C). However, the secondary objective was to investigate phenotypic and genotypic influences on semen quality within this small population, which was established in 1971 with only 12 genetic founders. Sperm motility was measured by computer-assisted semen assessment and the data were analysed using a pattern analysis technique to detect and quantify naturally occurring sperm subpopulations within the semen samples. Four sperm subpopulations distinguishable by their motion characteristics were detected. The relative frequencies of two subpopulations (population 2: highly motile, non-linear; and population 4: poorly motile, non-linear) in fresh semen were correlated with the maximum voltage used during electroejaculation. The frequency of subpopulation 2 was negatively correlated with maximum voltage (r = -0.875, P < 0.0001) and the frequency of subpopulation 4 was positively correlated (r = 0.727, P < 0.005). The frequencies of all subpopulations varied significantly among the animals sampled (chi-squared = 2577.6, degrees of freedom = 54, P < 0.0001) and subpopulation 4 was also correlated with body weight (r = -0.59, P < 0.005). Semen stored at 17 degrees C retained motility, plasma membrane and acrosomal integrity for 48 h, but these measures decreased thereafter. The frequency of a sperm subpopulation showing uncoordinated but active motility increased significantly over the first 48 h and then decreased.
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