Evolution in the Murinae (Rodentia) Assessed by Microcomplement Fixation of Albumin

1995 ◽  
Vol 43 (2) ◽  
pp. 105 ◽  
Author(s):  
CHS Watts ◽  
PR Baverstock
Keyword(s):  
East Asian ◽  
Early Period ◽  
Sister Group ◽  
Subsequent Evolution ◽  
Biogeographic Region ◽  
Group A ◽  
African Group ◽  
Place Of Origin ◽  
Microcomplement Fixation ◽  
Relationship Of

The inter-relationship of 17 genera of Murinae rodents were studied using microcomplement fixation of albumin to measure immunological distances among taxa. The genera chosen represented six major clades and four monogeneric groups identified in earlier companion studies (an African group, a South-east Asian group, a New Guinean group, an Australasian group, an Acomys group, a Micromys group and Apodemus, Millardia, Mus and Phloeomys). When these companion studies are included 136 species and 67 genera were studied. Ten major clades were consistently supported by the data but apart from linking the South-east Asian and Australasian clades, the data do not resolve their inter-relationships. The Acomys-Uranomys-Lophouromys clade may be the sister-group to the rest of the Murinae. Otomys (Otomyinae) is considered to be a murine related to the African group of genera. Of the ten major clades identified, only one (Mus) occurs significantly in more than one primary biogeographic region. It is suggested that following an early period of relatively rapid dispersal from the place of origin, little further dispersal took place and subsequent evolution occurred within relatively confined geographic areas.

Evolution in Some South-East Asian Murinae (Rodentia), as Assessed by Microcomplement Fixation of Albumin, and Their Relationship to Australian Murines

1994 ◽  
Vol 42 (6) ◽  
pp. 711 ◽  
Author(s):  
CHS Watts ◽  
PR Baverstock
Keyword(s):  
East Asia ◽  
Phylogenetic Relationship ◽  
East Asian ◽  
New Guinea ◽  
Data Sets ◽  
South East Asia ◽  
Land Bridge ◽  
Murine Rodents ◽  
Microcomplement Fixation ◽  
Relationship Of

The interrelationships of 16 genera and 49 species of predominantly South-east Asian murine rodents were studied by means of microcomplement fixation of albumin to measure immunological distances among taxa. The results are viewed as a hypothesis of the phylogenetic relationship of these taxa that can be tested by other data sets. Three main groupings are suggested: (1) Maxomys; (2) Leopoldomys, Niviventer and Tokudaia; and (3) Bandicota, Berylmys, Bullimus, Bunomys, Komodomys, Nesokia, Papagomys, Paruromys, Rattus, Stenomys, Sundamys and Taeromys. Within this latter group, Bunomys chrsogasta, Komodomys and Rattus timorensis group together, as do Bullimus, Rattus and Stenomys, and Bandicota with Nesokia. The Australian murines, represented by Mesembriomys, may be part of this South-east Asian radiation but, if so, arose early in its history. Biogeographically, the results support South-east Asia as being a centre of murine evolution with secondary foci in Sulawesi, New Guinea and Australia. There is some evidence to suggest that a relatively recent land bridge between Sulawesi, Flores and Timor may have existed.

A Test of Satiation as a Function of Adaptation in Stuttering

1969 ◽  
Vol 12 (1) ◽  
pp. 110-117 ◽  
Author(s):  
Harold A. Peterson ◽  
Mary Beth Rieck ◽  
Rita K. Hoff
Keyword(s):  
Semantic Differential ◽  
Repeated Readings ◽  
Group A ◽  
Relationship Of ◽  
The Relationship

To test the relationship of adaptation and satiation as hypothesized by Jakobovits, satiation of meaning as a function of repeated readings for adaptation was measured in the performance of 14 male stutterers. The subjects as a group exhibited both satiation and adaptation, but the two phenomena did not occur simultaneously in a significant number of the members of the group. A reduction in meaningfulness, as measured by the semantic differential, was not shown to be a significant factor in the reduction of stuttering frequency for the individuals in the group. Satiation and adaptation were not established as the same phenomenon, although the two may still be related through another factor.

scholarly journals Proplatelets and stress platelets

Blood ◽  
1987 ◽  
Vol 69 (2) ◽  
pp. 522-528 ◽  
Author(s):  
M Tong ◽  
P Seth ◽  
DG Penington
Keyword(s):  
Bone Marrow ◽  
Platelet Rich Plasma ◽  
Early Period ◽  
Platelet Volume ◽  
Plasma Exposure ◽  
Functional Characteristics ◽  
Platelet Production ◽  
Relationship Of ◽  
The Relationship ◽  
Platelet Formation

Abstract The process of platelet formation by the fragmentation of megakaryocyte pseudopodia, termed proplatelets, demonstrable in the marrow sinusoids is poorly understood. “Stress” platelets produced under conditions of stimulated platelet production differ from normal circulating platelets with respect to volume and a number of functional characteristics. To clarify the relationship of stress platelets to proplatelets, rats were injected with heterologous platelet antiserum. Nondiscoid platelet forms, some characteristically beaded in appearance, strongly resembling bone marrow proplatelets, can be recovered in the circulation of normal rats. During the early period of recovery from acute thrombocytopenia, there was a substantial increase in the proportion of these elongated platelets in the citrated platelet rich plasma. Exposure to EDTA rendered them spherical. Circulating proplatelets may contribute significantly to the prompt increase in platelet volume during recovery from acute thrombocytopenia at a time prior to significant increase in megakaryocyte size and ploidy.

Training-induced alterations of the in vivo force-velocity relationship of human muscle

1981 ◽  
Vol 51 (3) ◽  
pp. 750-754 ◽  
Author(s):  
V. J. Caiozzo ◽  
J. J. Perrine ◽  
V. R. Edgerton
Keyword(s):  
Training Group ◽  
Knee Extension ◽  
Knee Extensors ◽  
Velocity Relationship ◽  
Slow Velocity ◽  
Group A ◽  
Force Velocity ◽  
Group B ◽  
Relationship Of

Seventeen male and female subjects (ages 20–38 yr) were tested pre- and posttraining for maximal knee extension torque at seven specific velocities (0, 0.84, 1.68, 2.51, 3.35, 4.19, and 5.03 rad . s-1) with an isokinetic dynamometer. Maximal knee extension torques were recorded at a specific joint angle (0.52 rad below the horizontal plane) for all test speeds. Subjects were randomly assigned to one of three experimental groups: group A, control, n = 7; group B, training at 1.68 rad . s-1, n = 5; or group C, training at 4.19 rad . s-1, n = 5. Subjects trained the knee extensors by performing two sets of 10 single maximal voluntary efforts three times a week for 4 wk. Before training, each training group exhibited a leveling-off of muscular tension in the slow velocity-high force region of the in vivo force-velocity relationship. Training at 1.68 rad . s-1 resulted in significant (P less than 0.05) improvements at all velocities except for 5.03 rad . s-1 and markedly affected the leveling-off in the slow velocity-high force region. Training at 4.19 rad . s-1 did not affect the leveling-off phenomenon but brought about significant improvements (P less than 0.05) at velocities of 2.51, 3.35, and 4.19 rad . s-1. The changes seen in the leveling-off phenomenon suggest that training at 1.68 rad . s-1 might have brought about an enhancement of motoneuron activation.

scholarly journals Prediction of Reproductive Success in Multiparous First Service Dairy Cows by Parameters from In-Line Sensors

Agriculture ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 334
Author(s):  
Ramūnas Antanaitis ◽  
Vida Juozaitienė ◽  
Dovilė Malašauskienė ◽  
Mindaugas Televičius ◽  
Mingaudas Urbutis ◽  
...  
Keyword(s):  
Electrical Conductivity ◽  
Blood Parameters ◽  
Negative Energy ◽  
Hydroxybutyric Acid ◽  
Pregnancy Status ◽  
Group A ◽  
Biochemical Indices ◽  
Relationship Of ◽  
The Relationship

The aim of the current study was to evaluate the relationship of different parameters from an automatic milking system (AMS) with the pregnancy status of multiparous cows at first service and to assess the accuracy of such a follow-up with regard to blood parameters. Before the insemination of cows, blood samples for measuring biochemical indices were taken from the coccygeal vessels and the concentrations of blood serum albumin (ALB), cortisol, non-esterified fatty acids (NEFA) and the activities of aspartate aminotransferase (AST) and gamma glutamyltransferase (GGT) were determined. From oestrus day to seven days after oestrus, the following parameters were registered: milk yield (MY), electric milk conductivity, lactate dehydrogenase (LDH) and β-hydroxybutyric acid (BHB). The pregnancy status was evaluated using ultrasound “Easy scan” 30–35 days after insemination. Cows were grouped by reproductive status: PG− (non-pregnant; n = 48) and PG+ (pregnant; n = 44). The BHB level in PG− cows was 1.2 times higher (p < 0.005). The electrical conductivity of milk was statistically significantly higher in all quarters of PG− cows (1.07 times) than of PG+ cows (p < 0.05). The arithmetic mean of blood GGT was 1.61 times higher in PG− cows and the NEFA value 1.23 times higher (p < 0.05) compared with the PG+ group. The liver function was affected, the average ALB of PG− cows was 1.19 times lower (p < 0.05) and the AST activity was 1.16 times lower (p < 0.05) compared with PG+ cows. The non-pregnant group had a negative energy balance demonstrated by high in-line milk BHB and high blood NEFA concentrations. We found a greater number of cows with cortisol >0.0.75 mg/dL in the non-pregnant group. A higher milk electrical conductivity in the non-pregnant cows pointed towards a greater risk of mastitis while higher GGT activities together with lower albumin concentrations indicated that the cows were more affected by oxidative stress.

Relationship of Peabody Picture Vocabulary Test and Wechsler Intelligence Scale for Children in an Educable Retarded Group: A Cautionary Note

1971 ◽  
Vol 28 (2) ◽  
pp. 405-406 ◽  
Author(s):  
Richard A. Pasewark ◽  
Bernard J. Fitzgerald ◽  
Ted Gloeckler
Keyword(s):  
Full Scale ◽  
Vocabulary Test ◽  
Cautionary Note ◽  
Peabody Picture Vocabulary ◽  
Peabody Picture Vocabulary Test ◽  
Intelligence Scale ◽  
Cautious Approach ◽  
Group A ◽  
Relationship Of ◽  
Verbal Performance

To determine the equivalence and relationship of Peabody and WISC scores in a retarded population, 49 students in a class for the educable retarded were tested. The Peabody IQ consistently over-estimated WISC Verbal, Performance, and Full Scale IQs. Intercorrelations between IQs from the two tests were disappointingly low. A more cautious approach to use of the Peabody as a “substitute” measure for the WISC is suggested.

scholarly journals Genome-wide variations of SARS-CoV-2 infer evolution relationship and transmission route

2020 ◽  
Author(s):  
Lehai Zhang ◽  
Shifu Wang ◽  
Qian Ren ◽  
Junjie Yang ◽  
Yanqin Lu ◽  
...  
Keyword(s):  
Molecular Detection ◽  
Detection Efficiency ◽  
Evolutionary Relationship ◽  
Clinical Manifestations ◽  
Coding Region ◽  
Gene Coding ◽  
Genome Wide ◽  
Group A ◽  
Group B ◽  
Relationship Of

AbstractIn the epidemic evolution of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), the issues of mutation, origin, typing and the effect of mutation on molecular detection remain to be unrevealed. In order to identify the evolutionary relationship of SARS-CoV-2 and evaluate the detection efficiency of primers that are currently used in different countries, we retrieved genomic sequences of 373 SARS-CoV-2 strains from multiple databases and performed genome-wide variation analysis. According to the nucleotide C28144T variation, the SARS-CoV-2 can be divided into group A (117 strains) and group B (256 strains). The spike protein gene (S gene) coding region 1841 (total 23403) A1841G, formed a B1 subgroup (40 strains) in group B, of which 30 strains were from European and American countries in March (especially Washington, USA). These mutations are likely to be influenced by the environment or the immunization selection pressure of different populations. Although the mutation is not in the receptor binding region (RBD) and alkaline cleavage region, it may also affect the ability of transmission and pathogenicity; however, the significance is not yet clear. As the ratio of A / B strains in the epidemic months showed an increasing trend (0.35: 1 in January, 0.62: 1 in February and 0.76: 1 in March), it seems that the transmissibility of group A strains becomes stronger with time. Based on the variation of 11 nucleotide sites during the epidemic process, it is speculated that the Washington strain is more like an ancestor type, and the Wuhan strain is the offspring of the group A virus strain. By comparing the detection capabilities of primers in different countries, the SARS-CoV-2 nucleotide variation may only affect molecular detection of very few strains. The differences in the transmissibility, pathogenicity and clinical manifestations of different types of strains require further investigations.

scholarly journals Three Complete Mitochondrial Genomes of Orestes guangxiensis, Peruphasma schultei, and Phryganistria guangxiensis (Insecta: Phasmatodea) and Their Phylogeny

Insects ◽  
2021 ◽  
Vol 12 (9) ◽  
pp. 779 ◽  
Author(s):  
Ke-Ke Xu ◽  
Qing-Ping Chen ◽  
Sam Pedro Galilee Ayivi ◽  
Jia-Yin Guan ◽  
Kenneth B. Storey ◽  
...  
Keyword(s):  
Sister Group ◽  
Recent Common Ancestor ◽  
Mitochondrial Genomes ◽  
Sister Group Relationship ◽  
Protein Coding ◽  
Most Recent Common Ancestor ◽  
Stick Insects ◽  
Long Time ◽  
Relationship Of ◽  
Complete Mitochondrial Genomes

Insects of the order Phasmatodea are mainly distributed in the tropics and subtropics and are best known for their remarkable camouflage as plants. In this study, we sequenced three complete mitochondrial genomes from three different families: Orestes guangxiensis, Peruphasma schultei, and Phryganistria guangxiensis. The lengths of the three mitochondrial genomes were 15,896 bp, 16,869 bp, and 17,005 bp, respectively, and the gene composition and structure of the three stick insects were identical to those of the most recent common ancestor of insects. The phylogenetic relationships among stick insects have been chaotic for a long time. In order to discuss the intra- and inter-ordinal relationship of Phasmatodea, we used the 13 protein-coding genes (PCGs) of 85 species for maximum likelihood (ML) and Bayesian inference (BI) analyses. Results showed that the internal topological structure of Phasmatodea had a few differences in both ML and BI trees and long-branch attraction (LBA) appeared between Embioptera and Zoraptera, which led to a non-monophyletic Phasmatodea. Consequently, after removal of the Embioptera and Zoraptera species, we re-performed ML and BI analyses with the remaining 81 species, which showed identical topology except for the position of Tectarchus ovobessus (Phasmatodea). We recovered the monophyly of Phasmatodea and the sister-group relationship between Phasmatodea and Mantophasmatodea. Our analyses also recovered the monophyly of Heteropterygidae and the paraphyly of Diapheromeridae, Phasmatidae, Lonchodidae, Lonchodinae, and Clitumninae. In this study, Peruphasma schultei (Pseudophasmatidae), Phraortes sp. YW-2014 (Lonchodidae), and species of Diapheromeridae clustered into the clade of Phasmatidae. Within Heteropterygidae, O. guangxiensis was the sister clade to O. mouhotii belonging to Dataminae, and the relationship of (Heteropteryginae + (Dataminae + Obriminae)) was recovered.

scholarly journals Detection of Classic Serum Tumor Markers (CSTMs) Group Benefits to Differential Diagnosis and Disease Assessment of UTUC

2021 ◽  
Author(s):  
Jun-wei PAN ◽  
Fang-xiu / LUO ◽  
Xing-wei / JIN ◽  
Wei-chao TU ◽  
Xian-jin WANG ◽  
...  
Keyword(s):  
Differential Diagnosis ◽  
Tumor Markers ◽  
Disease Assessment ◽  
Serum Tumor Markers ◽  
Test Strategy ◽  
Abnormal Rate ◽  
Tumor Load ◽  
Group A ◽  
Relationship Of ◽  
Positive Results

Abstract Background: To explore the potential relationship of changes in classic serum tumor markers (CSTM) with differential diagnosis and disease assessment of upper tract urothelial carcinoma (UTUC).Methods: 60 UTUC (56 operated), 44 RCCC and 36 NTHN, were included into this retrospective analysis. The initial classic serum tumor markers (CSTMs), including CA242, CA199, CA125, CEA, AFP, SCC and CA724, were compared among the three groups. The preoperative, 1 month postoperative and 1 year postoperative/PD parameters (value and abnormal rate) of CSTMs were compared in UTUC group. A recommend test strategy was given and rechecked. The pathological manifestations of tumoral tissues and paracancerous tissues were analyzed.Results: The value of CA242, CA199 and CEA were higher in UTUC than in RCCC. The value of CEA was higher in UTUC than in NTHN. The value of CA199 and CEA were higher in UTUC than in RCCC+NTHN. The AR of CA199, CEA, SCC and CA724 were higher in UTUC than in RCCC. The AR of CEA and CA724 were higher in UTUC than in NTHN. The AR of CA199, CEA, SCC and CA724 were higher in UTUC than in RCCC+NTHN. The preoperative value of CA242 and CA199 were higher than 1 month postoperative ones in UTUC. The 1 year postop/PD value of CA242 and AFP were higher than 1 month postoperative ones in UTUC. For postop PD patients, the value during PD of CA242, CA199 and AFP were higher than 1 month postop ones. The preoperative AR of CA199 and CEA were higher than 1 month postoperative ones in UTUC. The recommended test strategy was given: CA242+CA199+CEA+AFP+SCC+CA724, and was rechecked. The P values were almost the lowest and the positive results covered all the comparisons. In 56 operated cases, the NAC in CSTMs by the recommended test strategy was statistically related with the tumor load. It appeared positive labelling by Ab of CA199, CA125, CEA, AFP and CA724 in UTUC tissues, while negative in paracancerous tissues.Conclusions: CSTMs may help to make differential diagnosis and disease assessment of UTUC. Group test (CA242+CA199+CEA+AFP+SCC+CA724) was recommended and more valuable.Trial registration: Not applicable

The phylogenetic position of the tuatara, Sphenodon (Sphenodontida, Amniota), as indicated by cladistic analysis of the ultrastructure of spermatozoa

1992 ◽  
Vol 335 (1274) ◽  
pp. 207-219 ◽  
Keyword(s):  
Cladistic Analysis ◽  
Sister Group ◽  
Sister Taxon ◽  
Phylogenetic Position ◽  
Sister Group Relationship ◽  
Usual Concept ◽  
Cladistic Analyses ◽  
Relationship Of

Sphenodon has traditionally been regarded as a little changed survivor of the Permo-Triassic thecodont or eosuchian ‘stem reptiles’ but has alternatively been placed in the Lepidosauria as the plesiomorphic or even apomorphic sister-taxon of the squamates. A cladistic analysis of 16 characters from spermatozoal ultrastructure of Sphenodon and other amniotes unequivocally confirms its exceedingly primitive status. The analysis suggests that monotremes are the sister-group of birds; squamates form the sister-group of a bird + monotreme clade while the three sister-groups successively below the bird + monotreme + squa- mate assemblage are the caiman, the tuatara and the outgroup (turtles). The monotreme + bird couplet, supports the concept of the Haemothermia, but can only be regarded heuristically. The usual concept of mammals as a synapsid-derived outgroup of all other extant amniotes is not substantiated spermatologically. All cladistic analyses made, and a separate consideration of apomorphies, indicate that Sphenodon is spermatologically the most primitive amniote, excepting the Chelonia. It is advanced (apomorphic) for the amniotes in only two of the 16 spermatozoal characters considered. A close, sister-group relationship of Sphenodon with squamates is not endorsed.

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