3,139 research outputs found

    Apoptosis in mouse skeletal muscles after physical exercise.

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    Apoptosis in mouse skeletal muscles after physical exercise. Podhorska-Okołów M, Krajewska B, Carraro U, Zabel M. Folia Histochem Cytobiol. 1999;37(2):127-8. No abstract available. PMID: 10352991 [PubMed - indexed for MEDLINE

    Colletes fabiani Zabel & Kuhlmann 2023, sp. nov.

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    <i>Colletes fabiani</i> sp. nov. <p>urn:lsid:zoobank.org:act: CC2563C3-EC07-467C-B891-D75B801A06A3</p> <p>Figs 20–21, 24</p> Diagnosis <p>The female can be separated from that of all other species with a normal scopa by the combination of the following characters: apical hair band of T2 about ½ width of disc (Fig. 20D–E), malar area narrow (⅓ width of mandibular base), facial fovea narrow (about width of antennal flagellum), T6 narrowly rounded and disc of T1 medio-anteriorly without numerous conspicuously short hairs interspersed</p> <p>(Fig. 20D–E), sternal discs covered with short hairs and apical tergal hair bands whitish (Fig. 20D–E). The male is best identified by the shape of S7 (Fig. 21G) and gonostylus (Fig. 21H).</p> Etymology <p>The species is dedicated to my (TZ) beloved husband Fabian Zabel, who always supported me in every way and thus gave me the opportunity to successfully complete my studies.</p> Material examined <p> <b>Holotype</b> SOUTH AFRICA – <b>Northern Cape Province</b> • ♂; 20 km W Sutherland, Farm Kanolfontein, road side; 32°24′43″ S, 20°27′28″ E; alt. 1385 m; 17 Sep. 2017; M. Kuhlmann leg.; SAMC.</p> <p> <b>Paratypes</b> SOUTH AFRICA – <b>Northern Cape Province</b> • 1 ♀; 8 km WNW Leliefontein, Fynbos, road side; 30°15′58″ S, 18°03′17″ E; alt. 1190 m; 14 Sep. 2017; M. Kuhlmann leg.; CMK • 1 ♀; 30 km W Sutherland, 6 km NNW Farm Kanariesfontein, road side; 32°22′17″ S, 20°22′50″ E; alt. 1310 m; 17 Sep. 2017; M. Kuhlmann leg.; CMK • 3 ♂♂; same collection data as for preceding; 15 Sep. 2018; CMK. – <b>Western Cape Province</b> • 1 ♀; Wuppertal; 32°17′ S, 19°13′ E; 8 Sep. 1987; C.D. Eardley leg.; CMK.</p> Description <p> <b>Female</b></p> <p>BODY LENGTH. 12 mm.</p> <p>HEAD. Integument black, antenna dark brown ventrally. Face grayish to yellowish white, with brown hairs intermixed and with blackish hairs along inner eye margins and on vertex (Fig. 20B). Clypeus with dense, medium-sized punctures (0.2 pd) that are slightly elongate (Fig. 20B). Malar area narrow, length about ⅓ width of mandibular base. Facial fovea narrow, maximum width about antennal diameter.</p> <p>MESOSOMA. Integument black, tarsi often brownish (Fig. 20A). Scutum with long grayish white to yellowish brown hairs intermixed with longer, dark brown hairs (Fig. 20C). Mesosomal sides with yellowish to grayish white hairs, intermixed with few brown hairs on mesepisternum. Legs yellowish white with brown hairs intermixed. Disc of scutum relative densely (1–3 pd) punctured, surrounded by dense (<0.5 pd) punctation, interspaces glabrous (Fig. 20C). Scutellum and metanotum with long, yellowish white hairs, on scutellum intermixed with brown hairs. Upper sloping part of propodeal triangle with short longitudinal carinae anteriorly, scabriculous posteriorly. Vertical part glabrous, anteriorly scabriculous. Scopa dark brown dorsally, yellow ventrally (Fig. 20F). Mid femora with distinct edge, stout ridge ventrally and brush of hairs basally.</p> <p>METASOMA. Integument black, terga narrowly translucent posteriorly. T1–T3 with slight bluish shine. Disc of T1 densely covered with long, erect, yellowish white hairs, interspersed inconspicuously with a few short, yellowish white hair medio-anteriorly (Fig. 20D). Disc of T2 with short, erect, yellowish white hairs. T2 with very weak, narrow basal tomentum. Discs of T3–T5 with successively longer, erect, blackish hairs. T1–T5 with broad white posterior tergal hair bands, narrower on T1 medially (Fig. 20E). Disc of T1 with fine and dense punctures (0.5–1 pd), punctures much finer and denser on posterior tergal depression. Disc of T2 with very fine and dense punctation (<0.5 pd); glabrous between punctures. S2–S5 with long, yellowish white hair fringes, shorter medially. Discs of sterna densely covered with shorter, apically directed hairs.</p> <p> <b>Male</b></p> <p>BODY LENGTH. 12–13 mm.</p> <p>HEAD. Integument black, antenna dark brown ventrally. Face grayish white to white, intermixed with black hairs on vertex, along inner eye margins, some on supraclypeal area and light brown hairs between antennae (Fig. 21B). Clypeus very dense, small punctures (<0.2 pd) (Fig. 21B). Malar area narrow, length about ⅓ width of mandibular base. Facial fovea narrow, maximum width about antennal diameter.</p> <p>MESOSOMA. Integument black, tarsi brownish (Fig. 21A). Scutum with long, grayish white to yellowish white hairs, with longer, dark brown hairs intermixed (Fig. 21C). Mesosomal sides grayish white, with brown hairs intermixed on mesepisternum. Legs with yellowish white hairs. Disc of scutum with medium-sized, scattered punctures (0.5–1 pd), integument glabrous, surrounded by dense punctation (<0.2 pd) (Fig. 21C). Scutellum and metanotum with long, yellowish white hairs, intermixed with dark brown hairs on scutellum. Upper sloping part of propodeal triangle with short longitudinal carinae anteriorly, scabriculous posteriorly. Vertical part slightly shagreened and shiny, with some more or less transverse carinae anteriorly. Hind basitarsus curved and broadened apically, with long yellowish bristles on dorso-apical edge (Fig. 21F). Dorsal half of inner side of hind basitarsus covered with hairs, ventral side glabrous. Second tarsus heart shaped, dorsal side is strongly broadened and rounded (Fig. 21F). Mid femora with right-angled edge on basal end, ventrally with long spine.</p> <p>METASOMA. Integument black, terga very narrowly translucent posteriorly. T1–T3 with slight bluish shine. T1 densely covered with long, erect, yellowish white hairs (Fig. 21D). Disc of T2 with shorter, concolorous hairs, intermixed with brown hairs. Discs of T3–T6 with long, erect blackish hairs. T1– T5 moderately broad, white posterior tergal hair bands, that on T1 medially narrower (Fig. 21E). Discs of T1 and T2 fine punctured (0.5–1 pd), punctures becoming slightly finer towards posterior tergal depression, interspaces glabrous (Fig. 21D). S2–S5 with white hair fringes, significantly longer laterally than medially. Discs of sterna sparsely covered with very short yellowish white hairs. On S5 two elevations medio-laterally, also on S4 and S6 but less distinct. S6 with small brush of bristles laterally. S7 (Fig. 21G) and gonostylus (Fig. 21H) as illustrated.</p> Distribution <p>Found in mountainous regions of the Kamiesberg, Roggeveld and Cedarberg (Fig. 24).</p> Phenology <p>Only found in September.</p>Published as part of <i>Zabel, Tina & Kuhlmann, Michael, 2023, Taxonomic revision of the southern African Colletes fasciatus species group (Hymenoptera: Colletidae), pp. 1-96 in European Journal of Taxonomy 899</i> on pages 24-31, DOI: 10.5852/ejt.2023.899.2297, <a href="http://zenodo.org/record/8413282">http://zenodo.org/record/8413282</a&gt

    Exercise-induced apoptosis in rat kidney is mediated by both angiotensin II AT1 and AT2 receptors

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    Histol Histopathol. 2006 May;21(5):459-66. Exercise-induced apoptosis in rat kidney is mediated by both angiotensin II AT1 and AT2 receptors. Podhorska-Okolow M, Dziegiel P, Gomulkiewicz A, Kisiela D, Dolinska-Krajewska B, Jethon Z, Carraro U, Zabel M. Source Department of Histology and Embryology, Medical University of Wroclaw, Wroclaw, Poland. [email protected] Abstract Excessive physical exercise may lead to disturbance of the entire homeostasis in the body, including damage not only in skeletal muscles but also in many distant organs. The mechanisms responsible for the exercise-induced changes could include oxidative stress or angiotensin II. We previously showed that acute exercise led to apoptosis in kidney but not as a result of oxidative stress. In this study, we examined the role of angiotensin II and its AT1 and AT2 receptors in mediation of exercise-induced apoptosis in kidney. We clearly demonstrated that acute physical exercise induced apoptosis in renal cells of distal convoluted tubuli and cortical and medullary collecting ducts. Moreover, the cells displayed an increased expression of both AT1 and AT2 angiotensin II receptors and of p53 protein. The results suggest that angiotensin II could upregulate p53 expression in renal distal convoluted tubular cells and in the cells collecting ducts via both AT1 and AT2 receptors, which might be the crucial apoptosis-mediating mechanism in kidneys after excessive exercise. PMID: 16493576 [PubMed - indexed for MEDLINE

    Colletes troetroeensis Zabel & Kuhlmann 2023, sp. nov.

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    <i>Colletes troetroeensis</i> sp. nov. <p>urn:lsid:zoobank.org:act: 6374F752-D657-4DE5-8116-709B0871137E</p> <p>Figs 59, 63</p> Diagnosis <p>The female can be separated from that of all other species with a normal scopa by the combination of the following characters: apical hair band of T2 about ½ width of disc (Fig. 59D–E), malar area elongate (about width of mandibular base), facial fovea very narrow (about ½ width of antennal flagellum), on metanotum dark brown hairs intermixed.</p> Etymology <p>Troe-Troe was the name of an old mission settlement that was later changed to Vanrhynsdorp. The only known specimen of this species was found in the vicinity of this town.</p> Material examined <p> <b>Holotype</b> SOUTH AFRICA – <b>Western Cape Province</b> • ♀; 20 km N Vanrhynsdorp, Knersvlakte; 31°26′ S, 18°41′ E; alt. 211 m; 21 Sep. 2001; B. Danforth leg.; CMK.</p> Description <p> <b>Female</b></p> <p>BODY LENGTH. 10 mm.</p> <p>HEAD. Integument black, antenna brown ventrally. Face short grayish white hairs intermixed with light brown hairs on vertex and along inner eye margins blackish hairs. Clypeus with fine, dense (0.2 pd) slightly elongate punctures (Fig. 59B). Malar area elongate, as long as width of mandibular base. Facial fovea very narrow, maximum width about ½ antennal diameter.</p> <p>MESOSOMA. Integument black, tarsi mostly brownish (Fig. 59A). Scutum with relatively long, yellowish white to grayish hairs intermixed with slightly longer brownish hairs (Fig. 59C). Mesosomal sides yellowish to grayish white with brown hairs on mesepisternum, legs with yellowish white and some brown hairs intermixed. Disc of scutum relative densely (1–2 pd) punctured, surrounded by dense (0.5 pd) punctation, interspaces glabrous (Fig. 59C). Scutellum and metanotum with relatively long, yellowish brown hairs, intermixed with dark brown hairs. Upper sloping part of propodeal triangle scabriculous, vertical part glabrous. Scopa dorsally brown, ventrally yellowish white (Fig. 59F). Mid femora basally with slight edge and yellow short brush of hairs ventrally.</p> <p>METASOMA. Integument black, terga posteriorly broadly translucent. Disc of T1 with yellowish white erect long hairs, with short hairs interspersed (Fig. 59D). Disc of T2 with short erect hairs, yellowish white. T2 with white relatively broad basal tomentum (Fig. 59D). Discs of T3–T5 with short, erect blackish hairs, on T3 very short. T1–T5 with white tergal hair bands, narrower on T1 and T5 (Fig. 59E). Disc of T1 with fine, relatively dense, slightly indistinct (1–2 pd) punctation, punctures becoming slightly finer, more shallow and denser towards posterior tergal depression. Disc of T2 with fine, indistinct, dense (<0.5 pd) punctation; interspaces glabrous. S2–S5 with white hair fringes posteriorly. Discs of sterna loosely covered with yellowish white apical directed hairs, medially longer on S2. S3–S5 with few black hairs laterally.</p> <p> <b>Male</b></p> <p>Unknown.</p> Distribution <p>Only known from the Knersvlakte (Fig. 63).</p> Phenology <p>The only record is from September.</p>Published as part of <i>Zabel, Tina & Kuhlmann, Michael, 2023, Taxonomic revision of the southern African Colletes fasciatus species group (Hymenoptera: Colletidae), pp. 1-96 in European Journal of Taxonomy 899</i> on pages 80-84, DOI: 10.5852/ejt.2023.899.2297, <a href="http://zenodo.org/record/8413282">http://zenodo.org/record/8413282</a&gt

    Colletes ruschia Zabel & Kuhlmann 2023, sp. nov.

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    <i>Colletes ruschia</i> sp. nov. <p>urn:lsid:zoobank.org:act: CF6706B2-DA70-4005-A4B2-CF5E300B6040</p> <p>Figs 51–53</p> Diagnosis <p>Among the species with a normal scopa the following combination of characters is unique for the female: apical hair band of T2 about ⅔ width of disc (Fig. 51D–E), malar area elongate, length about width of mandibular base, maximum width of facial fovea about ⅔ antennal diameter and discs of terga completely black (Fig. 51D–E). Male best identified by the unique shape of S7 (Fig. 52G).</p> Etymology <p> Named for the apparently preferred host plant genus ‘ <i>Ruschia</i> ’ Schwantes (Aizoaceae L.) on which the species was collected several times. Noun in apposition.</p> Material examined <p> <b>Holotype</b> SOUTH AFRICA – <b>Northern Cape Province</b> • ♂; 12 km NW Nieuwoudtville, Farm Avontuur, Renosterveld along Pad; 31°15′27″ S, 19°03′38″ E; alt. 770 m; 21 May 2013; M. Kuhlmann leg.; SAMC.</p> <p> <b>Paratypes</b> SOUTH AFRICA – <b>Northern Cape Province</b> • 1 ♂; Namaqualand 2917 DB, Hester Malan Nat. Res.; 29°38′ S, 17°59′ E; 2 Jul. 1985; M. Struck leg.; CMK • 1 ♀; same collection data as for preceding; 2 Aug. 1986; M. Struck leg.; CMK • 2 ♀♀; 15 km NW Nieuwoudtville, Farm Engelsepunt, Fynbos, Pf E1; 31°14′ 31″S, 18°59′08″ E; alt. 830 m; 26 Jul. 2003; K. Timmermann leg.; CMK • 1 ♀; Nieuwoudtville, Pad Glenlyon to R27, slope and side of the road; 31°23′25″ S, 19°08′28″ E; alt. 740 m; 18 Aug. 2007; K. Timmermann leg.; CMK • 1 ♀; Nieuwoudtville, Pad Glenlyon to R27; 31°23′24″ S, 19°09′06″ E; alt. 740 m; 19 Aug. 2007; K. Timmermann leg.; on <i>Ruschia unca</i> L.Bolus; CMK • 4 ♀♀; same collection data as for preceding; 3 Sep. 2007; CMK • 4 ♀♀; same collection data as for preceding; 20 Aug. 2007; M. Kuhlmann leg.; CMK • 4 ♀♀; same collection data as for preceding; 7 Sep. 2007; K. Timmermann leg.; CMK • 4 ♀♀; same collection data as for preceding; 17 Sep. 2007; M. Kuhlmann leg.; on <i>Ruschia</i> sp.; CMK • 1 ♀; 12 km NW Nieuwoudtville, Farm Avontuur, Fynbos; 31°16′18″ S, 19°02′55″ E; alt. 770 m; 13 Aug. 2010; M. Kuhlmann leg.; CMK • 6 ♂♂; 12 km NW Nieuwoudtville, Farm Avontuur, Renosterveld along Pad; 31°15′27″ S, 19°03′38″ E; alt. 770 m; 17 May 2013; M. Kuhlmann leg.; CMK • 1 ♀, 12 ♂♂; same collection data as for preceding; 31 May 2013; CMK • 1 ♂; same collection data as for preceding; 11 Jun. 2013; CMK. – <b>Western Cape Province</b> • 1 ♀; Worcester; 33°39′ S, 19°26′ E; 30 Sep. 1966; C.D. Michener leg.; CMK.</p> <p> <b>Additional material</b></p> <p> SOUTH AFRICA – <b>Western Cape Province</b> • 1 ♀; Hoek se Berg; 32°07′ S, 19°10′ E; 20 Sep. 2007; T. L. Griswold leg.; labelled as “ <i>Colletes fasciatus</i> -group 11”; BLCU.</p> Description <p> <b>Female</b></p> <p>BODY LENGTH. 11–12 mm.</p> <p>HEAD. Integument black, antenna dark brown ventrally. Face grayish to yellowish brown intermixed with longer dark brown hairs and with blackish hairs along inner eye and on vertex (Fig. 51B). Clypeus with dense (0.2 pd) medium-sized, slightly elongate punctures; interspaces smooth and shiny (Fig. 51B). Malar area elongate, length about width of mandibular base. Facial fovea narrow, maximum width about ⅔ antennal diameter.</p> <p>MESOSOMA. Integument black, tarsi often brownish (Fig. 51A). Scutum with relatively long, grayish white to yellowish brown hairs intermixed with numerous long blackish hairs (Fig. 51C). Mesosomal sides and legs grayish to yellowish white hairs intermixed with brown hairs on mesepisternum and few on fore femur, on legs intermixed with blackish hairs. Disc of scutum with relative dense (0.5–1 pd), coarse punctation, interspaces smooth and shiny, surrounded by dense (<0.5 pd) punctation (Fig. 51C). Scutellum with long, orange brown and long blackish hairs. Metanotum with long brownish orange hairs, medially plumose, sometimes with some black hairs intermixed. Upper sloping part of propodeal triangle with short, longitudinal carinae. Vertical part shagreened and slightly dull, anteriorly with well-developed more or less transverse carinae. Scopa dark brown dorsally and yellowish white ventrally (Fig. 51F). Mid femora with basal edge and yellow brush of hairs ventrally.</p> <p>METASOMA. Integument black, terga narrowly translucent posteriorly. T1–T3 with slight bluish shine. T1 densely covered with long, erect yellowish white hairs (Fig. 51D). Disc of T2 with very short yellowish brown and short black hairs. T2 with weakly developed, narrow basal tomentum. Discs of T3–T5 with successively longer, short, erect blackish hairs. T1–T5 with broad whitish posterior tergal hair bands, slightly narrower on T1 (Fig. 51E). Disc of T1 distinct, fine, dense (0.5–1 pd) punctation, punctures becoming finer and denser towards posterior tergal depression. Disc of T2 very fine, dense (<0.5 pd) punctation (Fig. 51D). Interspaces glabrous. S2– S5 short yellowish white hair fringes, shorter medially, with long blackish hairs. S3–S5 with black hairs. Discs of sterna covered with yellowish white, erect hairs, medially short.</p> <p> <b>Male</b></p> <p>BODY LENGTH. 10–11 mm.</p> <p>HEAD. Integument black, antenna dark brown ventrally. Face grayish white, along inner eye margins intermixed with blackish hairs; between antennae intermixed with brownish hairs (Fig. 52B). Hairs on vertex yellowish white with dark brown hairs intermixed. Clypeus with very dense, small punctures (<0.2 pd). Malar area long, about as long as width of mandibular base. Facial fovea narrow, maximum width about ½ antennal diameter.</p> <p>MESOSOMA. Integument black, tarsi reddish brown (Fig. 52A). Scutum with long, grayish white hairs, intermixed with dark brown hairs (Fig. 52C). Mesosomal sides and legs grayish white. Disc of scutum with medium-sized punctures (0.5–1 pd), integument glabrous, surrounded by dense punctation (<0.2 pd) (Fig. 52C). Scutellum and metanotum with long, yellowish brown hairs, on scutellum intermixed with dark brown hairs. Upper sloping part of propodeal triangle with short longitudinal carinae, vertical part shagreened and dull, anteriorly with some more or less transverse carinae. Hind basitarsus slightly curved (Fig. 52F).</p> <p>METASOMA. Integument black, terga narrowly translucent posteriorly. T1–T3 with slight bluish shine. Disc of T1 densely covered with long, erect yellowish white hairs (Fig. 52D). Disc of T2 similar to T1, but with shorter hairs. Discs of T3–T6 with long, erect blackish hairs. T1–T5 with moderately broad, white hair bands (Fig. 52E). Discs of T1 and T2 with fine and dense granulation (0.5 pd), granulation becoming more scattered and indistinct on posterior tergal depression, integument between granulation glabrous. S1–S5 with dense posterior fringes longer laterally than medially. Discs of S1 and S2 with long erect grayish white hairs, S3–S5 covered with shorter hairs. S6 with very small brush of bristles lateral. S7 (Fig. 52G) and gonostylus (Fig. 52H) as illustrated.</p> Distribution <p>From the Springbok area in the north down to Worcester (Fig. 53).</p> Phenology <p>Recorded from May to September.</p> Floral hosts <p> <i>Ruschia</i> sp., <i>R. unca</i> L.Bolus (Aizoaceae).</p>Published as part of <i>Zabel, Tina & Kuhlmann, Michael, 2023, Taxonomic revision of the southern African Colletes fasciatus species group (Hymenoptera: Colletidae), pp. 1-96 in European Journal of Taxonomy 899</i> on pages 71-73, DOI: 10.5852/ejt.2023.899.2297, <a href="http://zenodo.org/record/8413282">http://zenodo.org/record/8413282</a&gt
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