438 research outputs found
Javalbia bella Cook 1974
No full textJavalbia bella Cook, 1974 Material examined. France, dept. Lozère, Le Gordon de Mialet at Le Martinet, 44 º 0 9.371 N, 3 º 50.449 E, alt. 229 m a.s.l., 29 -vi- 2014, 0/ 1 /0, leg H. Smit. Since the first description of this species from Spain (Cook 1974), this species has been recorded only once, from Corsica (Gerecke & Di Sabatino 2013). This is the first record from continental France.Published as part of Smit, Harry, Gerecke, Reinhard, Pešić, Vladimir & Gledhill, Terence, 2015, On the taxonomic state of water mite taxa (Acari: Hydrachnidia) described from the Palaearctic, part 3, Hygrobatoidea and Arrenuroidea with new faunistic data, pp. 542-552 in Zootaxa 3981 (4) on page 550, DOI: 10.11646/zootaxa.3981.4.5, http://zenodo.org/record/24259
Djeboa gledhilli Pesic, Cook & Gerecke, sp. nov.
No full textDjeboa gledhilli Pešić, Cook & Gerecke sp. nov. (Figs. 22 A–F, 37 G) Type series: Holotype male, dissected and slide mounted, Côte d’Ivoire, River N’zi near Ouokokro (O), drift day, 10.i. 1978 Statzner. Paratype: same locality as holotype, drift net, 27.i. 1977, 0/ 1 /0 (dissected and slide mounted). Diagnosis: Dorsal shield oval (L/W ratio 1.1), with medial depression; muscle scars anterior and posterior to the postocularia with strongly pronounced thickenings, second pair of muscle scars shifted to the edge of dorsal depression (Figs. 22 A, 37 G); colour not recognizable; gnathosomal bay V-shaped; tips of Cx-I ending posterior to frontal margin; medial margins of Cx-IV not reduced to a median angle and well separated from each other, posterior margin of Cx-IV extending directly laterally; Cx-III and -IV with a series of longitudinal striae (five pairs on Cx-IV). Palp (Figs. 22 D–E): P- 1 without a dorsal seta; P- 2 strongly inflated, in proximal part with strongly protruding dorsal margin forming an acute angle, ventral margin S-shaped, distally convex; P- 3 higher proximally than distally, ventral margin concave, dorsal margin strongly convex; P- 4 slender, basally thickened, from here to anterior tip equally narrowed. Legs: I-L (Fig. 22 F) with I-L- 6 L/H ratio 2.2-2.3, ventral and dorsal margins distally strongly diverging; IV-L too foreshortened to illustrate, but similar to D. expansipalpis (see Fig. 19 F); swimming setae numbers (most of them hidden and cannot be counted): III-L-5, 5; IV-L-5, 4- 5. Description: Male (holotype): Idiosoma (ventral view: Fig. 22 B) L/W 413 / 372. Dorsal shield (Figs. 22 A, 37 G) L/W 350 / 312, ratio 1.1; gnathosomal bay L 66. Gonopore L/W 63 / 14; ejaculatory complex L 138. Palp: total L 138-145; L/ H, L/H ratio: P-1, 15- 17 / 20-28, 0.75-0.8; P-2, 37- 39 / 35, 1.07-1.09; P-3, 36- 38 / 26, 1.38-1.44; P-4, 39- 40 / 15, 2.5- 2.7; P-5, 11/ 5, 2.3; chelicera total L 80; gnathosoma vL 74. Legs: dL of I-L: 37, 38, 34, 37, 48, 60; I-L- 6 H 27, I-L- 6 L/H ratio 2.2. Female (paratype): Idiosoma (ventral view: Fig. 22 C) L/W 413 / 374. Dorsal shield L/W 361 / 320, ratio 1.13; gnathosomal bay L 54. Gonopore L/W 66 / 71, ratio 0.94; egg (n = 1) maximum diameter 111. Palp (Fig. 21 A): total L 145; L/H, L/H ratio: P-1, 15/ 22, 0.72; P-2, 39/ 36, 1.05; P-3, 39/ 28, 1.39; P-4, 40/ 16, 2.5; P-5, 12/ 6, 2.0; gnathosoma vL 74. Etymology: Named after Terence Gledhill (UK) in appreciation of his studies on Afrotropical water mites. Discussion: Djeboa gledhilli sp. nov. belong to the compressa- group of species (see under D. compressa for diagnostic features of this group). In lacking a dorsal seta on P- 1 and the strongly protruding dorsal margin of P- 2, forming an acute angle in proximal part of segment, Djeboa gledhilli sp. nov. resembles D. ghanaensis sp. nov. from Ghana. The latter has less pronounced dorsal muscle scars, Cx-III/IV with less longitudinal striation, posterior margin of Cx-IV directed posterolaterally and a proportionally much stockier P- 4. Distribution: Côte d’Ivoire.Published as part of Pešić, Vladimir, Cook, David, Gerecke, Reinhard & Smit, Harry, 2013, The water mite family Mideopsidae (Acari: Hydrachnidia): a contribution to the diversity in the Afrotropical region and taxonomic changes above species level, pp. 1-75 in Zootaxa 3720 (1) on pages 39-41, DOI: 10.11646/zootaxa.3720.1.1, http://zenodo.org/record/28502
On the taxonomy of water mites (Acari: Hydrachnidia) described from the Palaearctic, part 2: Hydryphantoidea and Lebertioidea
No full textAbstract: The paper explains changes which become necessary in water mite taxonomy after revision of material from museum collections and recent field work.The following synonyms are established:
Family Hydryphantidae: Acerbitas Özdikmen, 2006 = Todothyas, Cook, 1974; Todothyas distincta (Tuzovskij, 2007) = Todothyas colligera (K.Viets, 1923); Todothyas incerta (Lundblad, 1941) = Todothyas barbigera (K.Viets, 1908); Georgella intermedia Walter, 1927 (G. dauphinensis nom. nov. K.O.Viets, 1987) = G. koenikei Maglio, 1906; Hydrobaderia Özkan, 1985 = Hydryphantes Koch, 1841; Hydrobaderia ilicaensis Özkan, 1985 = Hydryphantes crassipalpis Koenike, 1914; Hydryphantes algeriensis Walter, 1925 = H. dispar (Schaub, 1888); Hydryphantes bayeri nonundulatus K. Viets, 1919 = H. planus Thon, 1899; Hydryphantes intermedius Daday, 1901 = H. dispar (Schaub, 1888); Hydryphantes spinipes Walter, 1922 = H. ruber (Geer, 1787); Panisus clypeolatus (Maglio, 1909) = P. torrenticolus Piersig, 1898; Panisus sarasini Bader, 1981 = P. michaeli (Koenike, 1896); Protzia multipora Walter, 1922 = P. squamosa Walter, 1908; Protzia macrognatha Walter, 1944 = P. distincta Walter, 1922; Sindacoides Bader, 1992 = Panisopsis K.Viets, 1926; Sindacoides ticinensis Bader, 1992 = Panisopsis setipes (K.Viets, 1911); Thyasella mandibularis torrenticola Schwoerbel, 1958 = T. mandibularis Lundblad, 1924. Hydryphantes pyrenaicus E. Angelier 1985, published as nomen nudum, refers to H. armentarius Gerecke, 1996.
Family Anisitsiellidae: Bandakia bieberi Bader, 1994 = B. concreta Thor, 1913.
Family Oxidae: Oxus koenikei Thor, 1899 = O. longisetus (Berlese, 1885).
Family Sperchontidae: Mixosperchon K. Viets, 1926 = Hispidosperchon Thor, 1901; Charoelia Bader, 1988 = Sperchon Kramer, 1877; Charoelia schloethi Bader, 1985 = Sperchon mutilus Koenike, 1908; Sperchon sandozi Bader, 1988 = S. hispidus Koenike, 1895; Sperchon monstruosus Bader, 1957 = S. hibernicus Halbert, 1944; Sperchonopsis phreaticus Biesiadka,1975 = S. procera Láska, 1965 stat. nov.
Family Torrenticolidae: Torrenticola xylurgella Gerecke & Di Sabatino, 1996 = T. gomerae Lundblad, 1969; Monatractides bicinctus (Láska, 1933), M. parvipalpis (Halbert 1944), M. robustus (Halbert 1944), T. (Monatractides) hibernicus (Conroy, 1984) = M. madritensis (K. Viets, 1930).
Redescriptions are given for numerous further species, redefining diagnostic characters and geographical distributions.
Todothyas colligera (K. Viets, 1923) and Wandesia propinqua Walter, 1947 are redefined and newly established as separate species.
Parathyas primitiva Lundblad, 1935 is transferred to the genus Todothyas Cook, 1974.
Sperchon vaginosus Thor, 1902 is re-established as a distinct species in the ’denticulatus-group’.
Torrenticola laskai Di Sabatino spec. nov. is introduced as a new name for Mediterranean populations attributed by several authors to T. lativalvata K. Viets, 1952.
Torrenticola amplexa minutivalvata Lundblad, 1956 is elevated to species rank.
The following species are regarded as species incertae: Todothyas extendens (George, 1901); T. pustulosa (Thor, 1901); T. valvata (Thor, 1899); Georgella berlesei (Piersig, 1901); G. imperfecta Bader, 1955; Hydryphantes bayeri Pisarovic, 1896; H. clypeatus Thor, 1899; H. frici Thon, 1899; H. peroviensis Udalzow, 1907; Oxus integer (Thor, 1901), O. lineatus Walter, 1912; O. halophilus E. Angelier, 1947; Pseudothyas trabecula Thor, 1899; Sperchon carpaticus Biesiadka, 1975; S. hystrix Komárek, 1921; S. ornatus Halbert, 1944; Torrenticola barsica tisialis Szalay, 1953; T.maglioi Koenike, 1909; T. halberti (Thor, 1923); T. procerivalvata K. Viets, 1952; T. sandalensis (Sokolow, 1926); T. spinirostris (Thor, 1897)
Faculty Opinions recommendation of Complement factor H-related hybrid protein deregulates complement in dense deposit disease.
No full textFaculty Opinions recommendation of A familial C3GN secondary to defective C3 regulation by complement receptor 1 and complement factor H.
No full textAltered expression of signalling lymphocyte activation molecule (SLAM) receptors in T cells from lupus nephritis patients - a potential biomarker of disease activity.
No full textObjectives. The aim was to investigate whether the signalling lymphocyte activation molecule (SLAM) signalling pathways contribute to LN and whether SLAM receptors could be valuable biomarkers of disease activity.
Methods. Peripheral blood mononuclear cells from 30National Research Ethics Service SLE patients with biopsy-proven LN were analysed by flow cytometry. Clinical measures of disease activity were assessed. The expression of the SLAM family receptors on T-cell subpopulations [CD4, CD8 and double negative (DN) T cells] was measured and compared between lupus patients with active renal disease and those in remission.
Results. The frequency of CD8 T cells expressing SLAMF3, SLAMF5 and SLAMF7 was significantly lower in LN patients who were in remission. In contrast, these subsets were similar in patients with active renal disease and in healthy individuals. Patients with active nephritis had an increased percentage of circulating monocytes, consistent with a potential role played by these cells in glomerular inflammation. Changes in the frequency of DN T cells positive for SLAMF2, SLAMF4 and SLAMF7 were observed in lupus patients irrespective of the disease activity. We detected alterations in the cellular expression of the SLAM family receptors, but these changes were less obvious and did not reveal any specific pattern. The percentage of DN T cells expressing SLAMF6 could predict the clinical response to B-cell depletion in patients with LN.
Conclusion. Our study demonstrates altered expression of the SLAM family receptors in SLE T lymphocytes. This is consistent with the importance of the SLAM-associated pathways in lupus pathogenesis
Faculty Opinions recommendation of Characterization of a factor H mutation that perturbs the alternative pathway of complement in a family with membranoproliferative GN.
No full textFocal segmental glomerulosclerosis in IgA nephropathy: a result of primary podocyte injury?
No full textSegmental sclerosis is frequently seen in IgA nephropathy and is an adverse prognostic indicator in the Oxford classification. Hill and colleagues have studied patients with IgA nephropathy and show that the segmental sclerotic lesions have features that suggest they are due to primary podocyte injury. They confirm the validity of the Oxford classification in predicting outcome and also show that categorizing the type of FSGS is of prognostic significance, with collapsing and cellular forms having the worst outcome
Evolving complexity of complement-related diseases: C3 glomerulopathy and atypical haemolytic uremic syndrome
No full textPURPOSE OF REVIEW: The current review will discuss recent advances in our understanding of the pathology of C3 glomerulopathy and atypical haemolytic uremic syndrome (aHUS). RECENT FINDINGS: C3 glomerulopathy and aHUS are associated with abnormalities of control of the alternative pathway of complement. Recent articles have provided new insights into the classification of C3 glomerulopathy and its relationship to idiopathic immune complex-mediated glomerulonephritis. They suggest that there may be considerable overlap in pathogenesis between these entities and have indicated novel ways in which classification may be improved. There is increasing evidence that monoclonal gammopathy may cause C3 glomerulopathy or aHUS in older patients and emerging evidence that treatment of the underlying plasma cell clone may ameliorate the kidney disease. SUMMARY: Recent work has provided new insights into the causes of C3 glomerulopathy and aHUS, and the mechanism by which complement is dysregulated. This is of particular importance with the advent of new therapeutic agents which can specifically target different parts of the complement cascade
- …
