186,468 research outputs found
Vasectomy has No Impact on Future Lower Urinary Tract Symptoms Diagnoses: A Retrospective Cohort Claims Database Analysis
No full textThe aim of this study was to assess whether there is an association between vasectomy and benign prostatic hyperplasia with associated lower urinary tract symptoms (BPH/LUTS) due to inflammatory etiology.
We assessed the incidence of BPH/LUTS in men who had undergone vasectomy in a matched cohort analysis using the TriNetX Research Network. We identified men aged 30 to 60 years who underwent vasectomy and had a follow-up visit within 6 months to 5 years after vasectomy from January 2010 through December 2022 and compared them with matched controls. Outcomes recorded include diagnoses of BPH (N40, N40.1), BPH-related medication prescriptions, and BPH-related procedures. We accounted for confounding variables through propensity score-matching for age; race; and history of comorbid medical conditions: hyperlipidemia (International Classification of Disease-10: E78), metabolic syndrome (E88.81), overweight or obesity (E66), testicular hypofunction (E29.1), hypertension (I10-I16), nicotine dependence (F17), and obstructive sleep apnea (G47.33).
There was no significant difference in BPH diagnosis between postvasectomy men vs controls (0.84% vs 0.80%, RR: 0.95, 95% CI 0.86-1.05) or BPH/LUTS diagnosis (0.48% vs 0.44%, RR: 0.92, 95% CI 0.81-1.05) within 6 months to 5 years after vasectomy, respectively. No differences in BPH medication prescription (0.94% vs 0.84%) or rate of BPH procedures (0.022% vs 0.017%) were detected between the 2 groups.
This study suggests that vasectomy does not increase the risk of BPH development and/or LUTS worsening compared with the general population, providing assurance to both patients and health care providers who may consider vasectomy as a safe family planning option
FIGURE 1. A–G in Two new species of Coprinopsis from Kerala State, India
No full textFIGURE 1. A–G: Coprinopsis minuta (G63 (CALI), holotype). A. Basidiocarps; B. Basidiospores; C. Basidium; D. Pseudoparaphyses; E. Pleurocystidia; F. Pileipellis; G. Velar elements on the pileipellis. Scale bars: A = 5 mm; B–E = 20 µm; F & G = 50 µm.Published as part of Greeshma Ganga, K. G., Manimohan, Patinjareveettil & Deepna Latha, K. P., 2022, Two new species of Coprinopsis from Kerala State, India, pp. 149-158 in Phytotaxa 575 (2) on page 152, DOI: 10.11646/phytotaxa.575.2.4, http://zenodo.org/record/741323
FIGURE 3 in Two new species of Coprinopsis from Kerala State, India
No full textFIGURE 3. ML phylogram based on the nrITS sequence data matrix depicting the position of C. minuta and C. squamulosa in sect. Coprinopsis. Values at nodes indicate the bootstrap support. Bootstrap values ≥50% are shown.Published as part of Greeshma Ganga, K. G., Manimohan, Patinjareveettil & Deepna Latha, K. P., 2022, Two new species of Coprinopsis from Kerala State, India, pp. 149-158 in Phytotaxa 575 (2) on page 154, DOI: 10.11646/phytotaxa.575.2.4, http://zenodo.org/record/741323
FIGURE 2. A–M in Two new species of Coprinopsis from Kerala State, India
No full textFIGURE 2. A–M: Coprinopsis squamulosa (G297 (CALI), holotype). A–C. Basidiocarps; D. Basidiospores; E. Basidia; F. Pseudoparaphyses; G–H. Cheilocystidia; I–K. Pleurocystidia; L. Pileipellis; M. Velar elements on the pileipellis. Scale bars: A–C = 10 mm; G, I, J & L = 50 µm; D–F, H, K & M = 20 µm.Published as part of Greeshma Ganga, K. G., Manimohan, Patinjareveettil & Deepna Latha, K. P., 2022, Two new species of Coprinopsis from Kerala State, India, pp. 149-158 in Phytotaxa 575 (2) on page 153, DOI: 10.11646/phytotaxa.575.2.4, http://zenodo.org/record/741323
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
Coprinopsis minuta K. G. G. Ganga, Manim. & K. P. D. Latha. 2022, sp. nov.
No full textCoprinopsis minuta K. G. G. Ganga, Manim. & K. P. D. Latha., sp. nov. Fig 1. A–G MycoBank MB 845755 Etymology:—The specific epithet refers to the very small basidiocarps of this species. Diagnosis:—Very small basidiocarps, floccose velar remnants on pileus, subglobose to ovoid basidiospores with a rounded base, 5–6 psuedoparaphyses surrounding each basidium, and clavate pleurocystidia with a lobed apex. Differs from C. urticicola in having floccose velar remnants on pileus, stipe with a somewhat marginate bulbose base, basidiospores with a round base, 5–6 psuedoparaphyses surrounding each basidium, clavate pleurocystidia with apical lobes, smooth velar elements on the pileipellis, and distinctive nrITS and nrLSU sequences. Holotype:— INDIA. Kerala State: Kozhikode District, Calicut University Campus, 11°07’56.5” N 75°53’32.1” E, 12 August 2016. K. G. Greeshma Ganga G63 (CALI). GenBank accessions: OP 549280 (nrITS), OP 549279 (nrLSU). Description:— Basidiocarps very small, fragile. Pileus 3–6 mm diam. when mature, initially ovoid, paraboloid or cylindrical, then expanding to broadly paraboloid to convex; surface pure white when young, becoming orange gray (5B2/OAC760) with white velar remnants, initially completely covered with a thick floccose veil that later splitting into superficial, velar patches all over; margin initially incurved to straight, becoming decurved or slightly revolute, often fissile, deliquescent at maturity. Lamellae free, crowded, initially white, becoming dark brown (7F7/OAC733) with age; edge not observed due to deliquescence. Stipe 11–15 × 0.5–1 mm, central, tapering towards the apex, hollow; surface white, finely squamulose all over, slightly floccose towards the base; base somewhat marginate-bulbous with profuse basal mycelium. Odor and taste not distinctive. Basidiospores (n = 80) 6–8(9) × 5–7.5 × 5–6 µm, on an average 7.22 × 6.2 × 5.47 µm, Q 1 = 1–1.4, Q 1avg = 1.17, Q 2 = 1–1.4, Q 2avg = 1.23, lenticular, subglobose to ovoid with rounded base and apex, ellipsoid in side view, brown, thickwalled, with a central germ-pore up to 2 µm wide. Basidia 15–20 × 6–9 µm, clavate to pedicellate-clavate, hyaline, slightly thick-walled, surrounded by 5–6 pseudoparaphyses, 4-spored; sterigmata up to 3 µm long. Pleurocystidia 13–22 × 7–15 µm, broadly clavate with 2–3 lobed apex, hyaline, thin-walled. Lamella-edge not observed due to deliquescence. Cheilocystidia not observed. Pileipellis a cutis frequently disrupted by clumps of velar elements; hyphae 3–5 µm wide, subcylindrical, hyaline, thin-walled; velar elements 17–50 × 5–15 µm, branched, coralloid, hyaline, slightly thick-walled. Stipitipellis a cutis disrupted with velar elements; hyphae 3–8 µm wide, hyaline, slightly thick-walled; velar elements 5–14 × 2–8 µm, almost similar to the velar elements on the pileipellis, hyaline, slightly thick-walled. Clamp connections not observed on any hyphae. Habitat:—In small groups or scattered, on decaying twigs or rotten fruit pods of rubber tree (Hevea brasiliensis). Geographical distribution range:—Known only from the type locality in Kerala State, India. Additional specimens examined:— INDIA. Kerala State: Kozhikode District, Calicut University Campus, 11°07’56.5” N 75°53’32.1” E, 23 July 2016, K. G. Greeshma Ganga G23 (K. P. Deepna Latha personal herbarium). GenBank accessions: OP 549038 (nrITS), OP 549277 (nrLSU). Comments:—Smaller basidiocarps, deliquescent lamellae, subglobose basidiospore and a cutis-type pileipellis with colorless and coralloid velar elements place C. minuta in the sect. Coprinopsis. Coprinopsis urticicola (Berkeley & Broome 1861: 376) Redhead, Vilgalys & Moncalvo (2001: 232), a species originally described from North America (Uljé 2005) and also reported from East Africa (Pegler 1977), Europe and Iran (Asef et al. 2015), seems to be close to C. minuta in having almost similar-sized basidiospores (5.5–9 × 4.5–6.5 µm), coralloid velar elements on the pileipellis, absence of clamp connections, and a lignicolous habitat. However, C. urticicola differs from C. minuta in having a pileus with woolly-hairy velar scales, basidia surrounded by 5–8 psuedoparaphyses, basidiospores with a conical base, utriform to subcylindrical pleurocystidia, and a pileipellis with strongly encrusted velar elements. Coprinopsis kubickae (Pilát & Svrček 1967: 142) Redhead, Vilgalys & Moncalvo (2001: 229), reported from Europe (Uljé 2005), shares some similarities with C. minuta in having basidiocarps with an ochre brown to grayish pileus, stipe with an enlarged base, and coralloid velar elements on pileipellis. However, C. kubickae has minute, flocculose velar remnants on pileus, larger basidiospores (7–11 × 6–10 µm) with central to eccentric germ-pore and conical base, 5–8 psuedoparaphyses surrounding each basidium, a hymenium with utriform to subcylindrical pleurocystidia, clamped hyphae, and a habitat on soil (Uljé 2005). In a BLASTn search using the nrITS (676 bp) sequence, the closest hit was an unidentified Basidiomycota species PCT.10 (HQ248225: 99.70%) followed by C. urticicola (MH748639: 95.96 %). While using the nrLSU (956 bp) sequence, C. urticicola (HQ847101: 99.36 %) was resulted as the closest hit.Published as part of Greeshma Ganga, K. G., Manimohan, Patinjareveettil & Deepna Latha, K. P., 2022, Two new species of Coprinopsis from Kerala State, India, pp. 149-158 in Phytotaxa 575 (2) on pages 151-155, DOI: 10.11646/phytotaxa.575.2.4, http://zenodo.org/record/741323
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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