J J Kim

Publications (557)2142.33 Total impact

• Article: Atherogenic changes in low-density lipoprotein particle profiles were not observed in non-obese women with polycystic ovary syndrome.

  J J Kim, S J Chae, Y M Choi, K R Hwang, S H Song, S H Yoon, S M Kim, S Y Ku, S H Kim, J G Kim, S Y Moon
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  ABSTRACT: STUDY QUESTION: Is a preponderance of small dense low-density lipoprotein-cholesterol (LDL-C) observed in non-obese women with polycystic ovary syndrome (PCOS)? SUMMARY ANSWER: Non-obese Korean women with PCOS have no quantitative or qualitative changes in LDL-C profiles. WHAT IS KNOWN ALREADY: Small dense LDL particles (sd-LDL) are more atherogenic than large buoyant ones and are strongly associated with coronary artery disease independent of other risk factors. Many investigators have found an increased proportion of atherogenic sd-LDL or a decreased mean LDL particle size in women with PCOS, but all of these studies have been based primarily on obese or overweight women with PCOS. STUDY DESIGN, SIZE, DURATION: This was a case-control study evaluating complete lipid and lipoprotein profiles in 64 PCOS patients and 64 age- and BMI-matched controls. All women with PCOS in our study population were not obese. To determine the differences in the LDL particle profiles between PCOS phenotypes, the patients with PCOS were divided into two subgroups according to the presence of clinical or biochemical hyperandrogenism. PARTICIPANTS/MATERIALS, SETTING, METHODS: Using the Rotterdam criteria, we recruited 64 women (18-40 years) with PCOS who were attending a tertiary university hospital. A total of 64 premenopausal control women were matched with patients based on exact age and BMI (±1.0 kg/m2). All the participants fell within the non-obese range of the BMI (<25 kg/m2) according to the definition of obesity for Asians. The LDL subfraction was analyzed by 3% polyacrylamide gel tube electrophoresis. Seven LDL subclasses were quantified and LDL subclasses 3-7 were small LDL subfractions. LDL subfraction scores were calculated based on the following weighted scoring system developed by the manufacturer: scores of <5.5 were categorized as phenotype A (large, buoyant LDLs), and those >5.5 were categorized as non-A phenotype (sd-LDLs). The system also determined the mean LDL particle size diameter. MAIN RESULTS AND THE ROLE OF CHANCE: There were no differences in the absolute level of LDL-C, mean LDL diameter or percentage of atherogenic sd-LDLs between PCOS patients and controls or between hyperandrogenic and non-hyperandrogenic PCOS subgroups. Also, none of the subjects showed a non-A LDL phenotype. The most notable finding of our study was the difference in the lipoprotein (a) levels and prevalence of its elevation in PCOS patients versus controls (P = 0.002 and P = 0.004, respectively), and between PCOS subgroups (P = 0.030 and P = 0.047, respectively). LIMITATIONS, REASONS FOR CAUTION: Inclusion of only non-obese subjects, small sample size and lack of information on other potential confounding factors, such as differences in diet and/or exercise patterns. WIDER IMPLICATIONS OF THE FINDINGS: Although our findings suggest that non-obese women with PCOS have no significant quantitative or qualitative changes in LDL-C profile, data on obese Korean women with PCOS could offer complementary findings about the possible relationship between the magnitude of obesity and LDL phenotype. Further investigations are needed to determine whether a change in lipoprotein (a) in non-obese women with PCOS is also found in other ethnic groups. STUDY FUNDING/COMPETING INTEREST(S): No conflict of interest exists. This study was supported by a grant of the Korean Health Technology R&D Project, Ministry of Health & Welfare, Republic of Korea (A100624). TRIAL REGISTRATION NUMBER: N/A.
  Human Reproduction 03/2013; · 4.47 Impact Factor
• Article: Gastric extremely well-differentiated intestinal-type adenocarcinoma: a challenging lesion to achieve complete endoscopic resection.

  K J Kang, K-M Kim, J J Kim, P-L Rhee, J H Lee, B-H Min, J C Rhee, R Kushima, G Y Lauwers
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  ABSTRACT: Extremely well-differentiated tubular adenocarcinomas (EWDAs) of the stomach are characterized by surface maturation and their mimicking of intestinal metaplasia. Endoscopically, intramucosal EWDAs are frequently ill defined with indistinct borders due to the pallor of the neoplastic mucosa and the lack of contrast against the background atrophic and metaplastic mucosa. We evaluated the effectiveness of endoscopic resection for EWDAs after endoscopic submucosal dissection (ESD).Among 872 patients with early gastric cancer, 17 EWDAs were identified (1.9 %). Endoscopically, the flat or depressed type was significantly more common among EWDAs (88.2 %) than among early gastric cancers of other histologies (37.8 %; P < 0.01). The discrepancy between endoscopically estimated tumor size and tumor size as confirmed in pathology reports was significantly greater among EWDAs (18.4 ± 22.0 mm) than among others (5.8 ± 7.5 mm). Involvement of the lateral resection margin was more common (29.4 % vs. 2.5 %; P < 0.05), and complete resection was achieved less often in EWDAs (47.1 % vs. 80.4 %; P = 0.01) compared to the others.EWDAs are associated with higher rates of incomplete resection after ESD, especially along the lateral margins. Pathologists should alert endoscopists when this diagnosis is made, with its associated risks; and endoscopists should pay particular attention to the extent of these tumors during resection.
  Endoscopy 10/2012; 44(10):949-52. · 5.21 Impact Factor
• Article: Endoscopic submucosal dissection or transanal endoscopic microsurgery for nonpolypoid rectal high grade dysplasia and submucosa-invading rectal cancer.

  S U Park, Y W Min, J U Shin, J H Choi, Y-H Kim, J J Kim, Y B Cho, H C Kim, S H Yun, W Y Lee, H-K Chun, D K Chang
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  ABSTRACT: Background and study aims: Transanal endoscopic microsurgery (TEM) has been shown to be highly effective for early rectal cancer, and endoscopic submucosal dissection (ESD) has been introduced to treat noninvasive colorectal neoplasia. The aim of this study was to compare the outcomes of ESD and TEM for superficial early rectal cancer. Patients and methods: We retrospectively analyzed 63 patients with nonpolypoid rectal high grade dysplasia or submucosa-invading cancer who were treated with ESD or TEM, and compared clinical outcomes and safety between the treatment groups. Results: 30 patients underwent ESD and 33 underwent TEM. For ESD compared with TEM, en bloc resection rates were 96.7 % vs. 100 % (P = 0.476) and R0 resection rates were 96.7 % vs. 97.0 % (P = 1.000). There were no cases of local recurrence or distant metastasis in either group. Antibiotics were required in 11 patients (36.7 %) in the ESD group and 33 (100 %) in the TEM group (P < 0.001). There was no difference in net procedure time although ESD was associated with shorter total procedure time and hospital stay than TEM, with mean (standard deviation [SD]) 84.0 (51.2) vs. 116.4 (58.5) min (P = 0.0023), and 3.6 (1.2) vs. 6.6 (3.5) days (P < 0.001), respectively. There were no significant differences in complications between the two groups. Conclusions: Both ESD and TEM are effective and oncologically safe for treating nonpolypoid rectal high grade dysplasia and submucosa-invading cancers. ESD has the additional advantages of minimal invasiveness and avoidance of anesthesia. Therefore, ESD could be recommended as a treatment option for superficial early rectal cancers.
  Endoscopy 09/2012; · 5.21 Impact Factor
• Article: Combination therapy of testosterone enanthate and tadalafil on PDE5 inhibitor non-reponders with severe and intermediate testosterone deficiency.

  J W Kim, M M Oh, M G Park, J Y Park, J H Bae, J J Kim, D G Moon
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  ABSTRACT: Several studies have suggested combination therapy with testosterone supplementation in patients not responding to PDE5 inhibitors. Considering the pathophysiological basis for testosterone supplementation, the present study aims to identify whether combination therapy allows persistence of treatment effect after testosterone discontinuation. Furthermore, we evaluated whether the degree of testosterone depletion affects treatment outcome from combination therapy. Hypogonadal patients (<350 ng dl(-1)) with erectile dysfunction who previously did not respond to PDE5 inhibitors were treated with testosterone enanthate injections and daily tadalafil. Patients were stratified into two groups depending on the level of testosterone deficiency, with 250 ng dl(-1) as a reference point. Following testosterone supplementation (12 weeks) and combination therapy (12 weeks), patients with severe testosterone deficiency showed higher IIEF (International Index of Erectile Function) erectile function (EF) domain score (16.47±4.019 vs 12.36±4.051, P=0.001) and more patients responding satisfactorily to treatment by general assessment (57.9 vs 16.0%, P=0.009), despite reaching similar levels of serum total testosterone (602±169 ng dl(-1) vs 698±165 ng dl(-1), P=0.057). Testosterone supplementation was then discontinued and patients were maintained only on daily tadalafil (12 weeks). The severe depletion group maintained higher EF domain scores than baseline (13.06±3.38 vs 7.20±2.24, P=0.0004), despite testosterone levels returning to baseline. The results suggest that combination therapy was more beneficial to patients with severe testosterone depletion, possibly by improving underlying pathophysiology.International Journal of Impotence Research advance online publication, 13 September 2012; doi:10.1038/ijir.2012.32.
  International journal of impotence research 09/2012; · 2.73 Impact Factor
• Conference Proceeding: Enhanced sensitivity to near-infrared with high fill factor in small molecular organic solar cells

  H.-S. Shim, H.J. Kim, J.W. Kim, S.-Y. Kim, T.-M. Kim, J.-J. Kim
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  ABSTRACT: High efficiency near-infrared (NIR) absorbing solar cells based on lead phthalocyanine (PbPc) are reported using copper iodide (CuI) as a templating layer to control the crystal structure of PbPc. Devices with CuI inserted between the ITO and PbPc layers exhibit a two times enhancement of the JSC compared to the case in the absence of the CuI layer. This is due to the increase of crystallinity in the molecules grown on the CuI templating layer, which is investigated via an x-ray diffraction study. Moreover, fill factor is also enhanced to 0.63 from 0.57 due to low series resistance although the additional CuI layer is inserted between the ITO and the PbPc layer. As a result, the corrected power conversion efficiency of 2.5% was obtained, which is the highest one reported up to now among the PbPc based solar cells. © 2012 SPIE.
  Proceedings of SPIE - The International Society for Optical Engineering, San Diego, CA; 08/2012
• Article: The relaxant effect of ginseng saponin on the bladder and prostatic urethra: an in vitro and in vivo study.

  H A Jang, S Cho, S G Kang, Y H Ko, S H Kang, J H Bae, J Cheon, J J Kim, J G Lee
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  ABSTRACT: To assess the effects of ginseng saponin on relaxation of the bladder and prostatic urethra and to determine its mechanism of action. For the in vitro study, prostatic urethra muscle strips were harvested from 18 male New Zealand rabbits. The strips were mounted in organ baths and connected to force displacement transducers. After stabilization, maximal tissue contractions were obtained by the application of phenylepinephrine to the urethra strips, and a dose-response curve for ginseng saponin was constructed (10(-6)-10(-2)M). After pretreatment of urethra strips with N-nitro-L-arginine methyl ester (L-NAME), another dose-response curve for ginseng saponin was constructed. For the in vivo study, we used adult male Sprague-Dawley rats divided into three groups [control, partial bladder outlet obstruction (PBOO) and saponin-fed groups], and we monitored the vesical pressure (P(ves)) and urethral perfusion pressure (UPP). The ginseng saponin induced a significant dose-dependent relaxant effect on the prostatic urethra strips. A significant relaxant effect of ginseng saponin was observed from 10(-3)M, and ginseng saponin significantly relaxed urethra strips by 50.2 ± 20.26% at 10(-2)M. The relaxant effect was partially inhibited with L-NAME pretreatment. In the in vivo study, the change in UPP between baseline and relaxation was significantly higher in the saponin group than in the control or PBOO group (p < 0.001). The saponin group showed a significantly lower baseline P(ves) than the PBOO group. We observed a significant relaxation effect of ginseng saponin on the bladder and prostatic urethra in both in vitro and in vivo studies. The mechanism by which ginseng saponin induces relaxation appears to involve the nitric oxide/nitric oxide synthase pathway.
  Urologia Internationalis 04/2012; 88(4):463-9. · 0.99 Impact Factor
• Article: Cost-effectiveness of cervical cancer screening with primary human papillomavirus testing in Norway.

  E A Burger, J D Ortendahl, S Sy, I S Kristiansen, J J Kim
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  ABSTRACT: New screening technologies and vaccination against human papillomavirus (HPV), the necessary cause of cervical cancer, may impact optimal approaches to prevent cervical cancer. We evaluated the cost-effectiveness of alternative screening strategies to inform cervical cancer prevention guidelines in Norway. We leveraged the primary epidemiologic and economic data from Norway to contextualise a simulation model of HPV-induced cervical cancer. The current cytology-only screening was compared with strategies involving cytology at younger ages and primary HPV-based screening at older ages (31/34+ years), an option being actively deliberated by the Norwegian government. We varied the switch-age, screening interval, and triage strategies for women with HPV-positive results. Uncertainty was evaluated in sensitivity analysis. Current cytology-only screening was less effective and more costly than strategies that involve switching to primary HPV testing in older ages. For unvaccinated women, switching at age 34 years to primary HPV testing every 4 years was optimal given the Norwegian cost-effectiveness threshold ($83,000 per year of life saved). For vaccinated women, a 6-year screening interval was cost-effective. When we considered a wider range of strategies, we found that an earlier switch to HPV testing (at age 31 years) may be preferred. Strategies involving a switch to HPV testing for primary screening in older women is expected to be cost-effective compared with current recommendations in Norway.
  British Journal of Cancer 03/2012; 106(9):1571-8. · 5.04 Impact Factor
• Article: Clinical value of preoperative coronary risk assessment by computed tomographic arteriography prior to adult living donor liver transplantation.

  W-Y Chae, S Hwang, Y-I Yoon, M-C Kang, D-B Moon, G-W Song, G-C Park, D-H Jung, J-M Namgoong, S-W Jung, S-Y Yoon, J-J Kim, G-S Hwang, S-G Lee
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  ABSTRACT: Patients with advanced liver diseases are at increased risk of cardiovascular events, resulting in a higher incidence of cardiac complications following liver transplantation (OLT). We assessed the clinical value of computed tomographic coronary arteriography (CTCAG) as a routine preoperative cardiac evaluation test in adult patients scheduled for living donor OLT (LDLT). This single-center, prospective, observational study evaluated 247 adult patients being assessed for LDLT from April 2010 to March 2011. CTCAG was performed in patients with all-negative findings on routine cardiac workup, including thallium single photon emission computed tomography (SPECT). Of the 247 patients evaluated, 27 (10.9%) showed abnormal findings on CTCAG, with 18 (7.3%) showing mild to moderate involvement of one vessel; 7 (2.8%), two-vessel; and 2 (0.8%), three-vessel involvement. Coronary artery calcification was identified in patients with significant coronary artery stenosis. No adverse events occurred after CTCAG. Noticeable hypotensive episodes during LDLT surgery occurred in 5% of patients, mostly related to massive bleeding or postperfusion syndrome. During the first 3 months after LDLT, 3% of patients showed stress cardiomyopathy, but all recovered with supportive care. The poor general medical condition of LDLT candidates and the diagnostic accuracy of CTCAG suggest that this test should be included in the routine pretransplant cardiac workup, along with thallium SPECT, for these patients.
  Transplantation Proceedings 03/2012; 44(2):415-7. · 1.00 Impact Factor
• Article: [Increased expression of hypoxia-inducible factor-1α and connective tissue growth factor accompanied by fibrosis in the rat testis of varicocele].

  J S Paick, K Park, S W Kim, J W Park, J J Kim, M S Kim, J Y Park
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  ABSTRACT: We investigated hypoxia inducible factor-1α (HIF-1α), connective tissue growth factor (CTGF) expression and fibrosis in the testis of rats with surgically induced varicocele. A total of 47 adult male Sprague-Dawley rats were arranged in 3 groups, namely group 1 (varicocele operation 4 weeks ago, n=10; sham operation 4 weeks ago, n=5), group 2 (8 weeks, n=11; n=5), and group 3 (12 weeks, n=11; n=5). The rats in every group underwent bilateral orchiectomy 4, 8, and 12 weeks after the operations, respectively. HIF-1α and CTGF expression of both testes in group 3 were studied by real-time reverse transcription-polymerase chain reaction (RT-PCR) and immunohistochemistry. Fibrotic change was assessed by quantitative image analysis. HIF-1α mRNA expression in testes tissues in varicocele operation and sham controls showed no significant differences in RT-PCR. However, CTGF mRNA expressions in left testes were found to be significantly different between varicocele operation and sham controls. HIF-1α staining was present in both testes of all specimens and CTGF staining was present in 10 left and 8 right testes of 11 specimens. However HIF-1α and CTGF staining were absent in control group. There were significant fibrotic changes of both testes in groups 2 and 3. There were significant differences in fibrotic change along the durations of surgical varicocele. This study reveals that experimental varicocele in the rat is associated with HIF-1α and CTGF expression and it is accompanied by fibrotic change in the testis.
  Actas urologicas españolas 01/2012; 36(5):282-8. · 0.46 Impact Factor
• Article: Effects of recombinant dentin sialoprotein in dental pulp cells.

  S-Y Lee, S-Y Kim, S-H Park, J-J Kim, J-H Jang, E-C Kim
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  ABSTRACT: Dentin sialophosphoprotein (DSPP) is critical for dentin mineralization. However, the function of dentin sialoprotein (DSP), the cleaved product of DSPP, remains unclear. This study aimed to investigate the signal transduction pathways and effects of recombinant human DSP (rh-DSP) on proliferation, migration, and odontoblastic differentiation in human dental pulp cells (HDPCs). The exogenous addition of rh-DSP enhanced the proliferation and migration of HDPCs in dose- and time-dependent manners. rh-DSP markedly increased ALP activity, calcium nodule formation, and levels of odontoblastic marker mRNA. rh-DSP increased BMP-2 expression and Smad1/5/8 phosphorylation, which was blocked by the BMP antagonist, noggin. Furthermore, rh-DSP phosphorylated extracellular signal-regulated kinase (ERK), c-Jun N-terminal kinase (JNK), Akt, and IκB-α, and induced the nuclear translocation of the NF-κB p65 subunit. Analysis of these data demonstrates a novel signaling function of rh-DSP for the promotion of growth, migration, and differentiation in HDPCS via the BMP/Smad, JNK, ERK, MAPK, and NF-κB signaling pathways, suggesting that rh-DSP may have therapeutic utility in dentin regeneration or dental pulp tissue engineering.
  Journal of dental research 01/2012; 91(4):407-12. · 3.46 Impact Factor
• Article: Photoconductivity of C 60 as an origin of bias-dependent photocurrent in organic photovoltaics

  W. I. Jeong, Y. E. Lee, H. S. Shim, T. M. Kim, S. Y. Kim, J. J. Kim
  Advanced Functional Materials 01/2012; 22:3089-3094. · 10.18 Impact Factor
• Article: An organic p-n junction as an efficient and cathode independent electron injection layer for flexible inverted organic light emitting diodes

  J. H. Lee, J. W. Kim, S. Y. Kim, S. J. Yoo, J. J. Kim
  Organic Electronics 01/2012; 13:545-549. · 4.05 Impact Factor
• Article: High contrast flexible organic light emitting diodes under ambient light without sacrificing luminous efficiency

  Kim, Sei-Yong, Lee, Jeong-Hwan, Lee, Jae-Hyun, Kim, Jang-Joo
  Organic Electronics 01/2012; 13:826-832. · 4.05 Impact Factor
• Article: Outcoupling efficiency of organic light emitting diodes employing graphene as the anode

  S. Y. Kim, J. J. Kim
  Organic Electronics 01/2012; 13:1081-1085. · 4.05 Impact Factor
• Article: Molecular Characteristics of Subterranean Termites of the genus Reticulitermes (Isoptera: Rhinotermitidae) From Korea

  M.-J. Kim, Y.-S. Choi, J. Lee, J.-J. Kim, G.-H. Kim
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  ABSTRACT: Molecular and taxonomic studies of subterranean termites in the genus Reticulitermes (Isoptera: Rhinotermitidae) have suggested that Reticulitermes speratus kyushuensis Morimoto is the only species that occurs in Korea. However, the specimens studied to date were collected from a limited number of locations, and basic information about the distribution, taxonomy, and molecular characteristics of this genus in Korea is still lacking. In this study, we collected Reticulitermes specimens from 50 sampling sites distributed throughout the country. By comparing the cytochrome oxidase subunit II gene of mitochondrial DNA sequences, we conclude that Reticulitermes speratus is represented by two haplotypes in Korea. In addition, we report the first occurrence of another Reticulitermes species in this country.
  Annals of the Entomological Society of America 12/2011; 105(1):97-102. · 1.32 Impact Factor
• Article: Plating of humeral shaft fractures: comparison of standard conventional plating versus minimally invasive plating.

  C-W Oh, Y-S Byun, J-K Oh, J-J Kim, I-H Jeon, J-H Lee, K-H Park
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  ABSTRACT: This study compared clinical outcomes and complications in patients with humeral shaft fractures treated using two methods of fixation by plating. Minimally invasive plate osteosynthesis (MIPO, n=29) was prospectively performed from around the middle of the study period, while open reduction and plate osteosynthesis (ORPO, n=30) had been the original standard method. Locking compression plate was used in these two groups. Major characteristics of the two groups were similar in terms of fracture type, fracture location, age, associated injuries and numbers of open fractures. Primary union was achieved in 28 of 29 in the MIPO and in 27 of 30 in the ORPO. Mean time to union was similar in the two groups. Mean operation time in the MIPO (110min) was shorter than in the ORPO (169min) (P<0.05). Bone grafting was performed in five patients of in the ORPO, but in no patient in the MIPO (P<0.0001). There was one case of deep infection in the ORPO. Functional outcome was satisfactory in both groups. Minimally invasive plate osteosynthesis may achieve comparable results with the open plate osteosynthesis method in simple as well as complex fractures of humeral shaft. Although MIPO potentially has the radiation hazard, it may reduce the perioperative complications with a shortened operation time. Level III. Case-control study.
  Orthopaedics & Traumatology Surgery & Research 12/2011; 98(1):54-60. · 0.94 Impact Factor
• Chapter: Wide Strip Casting Technology of Magnesium Alloys

  W.‐J. Park, J.J. Kim, I.J. Kim, D. Choo
  04/2011: pages 143 - 146; , ISBN: 9781118062029
• Article: Negative charge-pump based antenna switch controller using 0.18 μm SOI CMOS technology

  C. Cho, J. Cha, M. Ahn, J.J. Kim, C. Lee
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  ABSTRACT: An antenna switch controller integrated with single-pole-multi-throw RF switches is presented. It is implemented in a 0.18 μm CMOS thin-film silicon-on-insulator (SOI) process. The proposed switch controller generates a negative voltage to enhance the linearity and power-handling capability of CMOS antenna switches, resulting in excellent RF performances. The size of the controller is 0.35 mm² and the power consumption is 2 μA for stand-by mode and 50 μA for Rx mode.
  Electronics Letters 04/2011; · 0.96 Impact Factor
• Article: Ultra-wideband CMOS voltage-controlled oscillator with reconfigurable tunable inductors

  J.J. Kim, K.-H. Lee, J. Choi, Y. Park, K. Lim, C.-H. Lee
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  ABSTRACT: An ultra-wideband voltage-controlled oscillator (VCO) is presented. The proposed VCO adopts a series/parallel reconfigurable structure of inductor arrays to double the tuning range of their equivalent inductance. An ultra-wide VCO frequency range from 4.2 to 18.7 GHz was measured, achieving 25 improvement of frequency tuning characteristic and 40 reduction effect in die area.
  Electronics Letters 03/2011; · 0.96 Impact Factor
• Article: Diversity and decay ability of basidiomycetes isolated from lodgepole pines killed by the mountain pine beetle.

  E Son, J-J Kim, Y W Lim, T T Au-Yeung, C Y H Yang, C Breuil
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  ABSTRACT: When lodgepole pines (Pinus contorta Douglas ex Louden var. latifolia Engelm. ex S. Watson) that are killed by the mountain pine beetle (Dendroctonus ponderosae) and its fungal associates are not harvested, fungal decay can affect wood and fibre properties. Ophiostomatoids stain sapwood but do not affect the structural properties of wood. In contrast, white or brown decay basidiomycetes degrade wood. We isolated both staining and decay fungi from 300 lodgepole pine trees killed by mountain pine beetle at green, red, and grey stages at 10 sites across British Columbia. We retained 224 basidiomycete isolates that we classified into 34 species using morphological and physiological characteristics and rDNA large subunit sequences. The number of basidiomycete species varied from 4 to 14 species per site. We assessed the ability of these fungi to degrade both pine sapwood and heartwood using the soil jar decay test. The highest wood mass losses for both sapwood and heartwood were measured for the brown rot species Fomitopsis pinicola and the white rot Metulodontia and Ganoderma species. The sap rot species Trichaptum abietinum was more damaging for sapwood than for heartwood. A number of species caused more than 50% wood mass losses after 12 weeks at room temperature, suggesting that beetle-killed trees can rapidly lose market value due to degradation of wood structural components.
  Canadian Journal of Microbiology 01/2011; 57(1):33-41. · 1.36 Impact Factor