09; Fig 1A); there appeared to be stronger evidence of a differe

09; Fig. 1A); there appeared to be stronger evidence of a difference between groups when adjusted in age, sex, BMI, and diabetes (P = 0.03; Fig. 1B,C). HCC occurred more commonly in HCV than in NAFLD (18 [6.8%] versus 6 [2.4%] respectively; P = 0.03), with time-to-event illustrated in Supporting Fig. 1. There was no significant difference in total vascular events between NAFLD and HCV groups (17 [6.9%] versus 10 [3.8%]; P = 0.17). In the NAFLD cohort, there were a total of 33 deaths or liver transplants (13.4%). Of the GSK2126458 solubility dmso 14 liver-related deaths and transplantations, 3 were related to HCC; there

were 4 deaths related to other cancers and 1 definite vascular death. The probability of overall survival was 99.6%, 96.7%, and 81.6% at 12, 36, and 120 months, respectively (Fig. 2A). In the HCV cohort, there were a total of 25 deaths or liver transplants (9.5%). Of the 21 liver-related deaths and transplantations, 12 were related to HCC; there was 1 definite vascular death and 3 deaths from unknown causes. The probability of overall free survival was 99.2%, 98.3%, and 82.0% at 12, 36, and 120 months, respectively (Fig. 2A). Overall mortality

was similar in both cohorts (P = 0.38; Fig. 2A), with no evidence of differences after adjustment by differences between groups in age, sex, BMI, diabetes, selleck compound and dyslipidaemia (P = 0.6; Fig. 2B,C). In the NAFLD group, there was strong evidence of differences between fibrosis stage 3 and 4 for total liver-related complications (P < 0.001) and some evidence for overall mortality (P = 0.05), as illustrated in Supporting Fig. 2A,B. In the HCV group, there was little evidence of differences between fibrosis stage 3 and 4 for

total liver-related complications (P = 0.18) and some evidence learn more for overall mortality (P = 0.04), as illustrated in Supporting Fig. 3A,B. Univariate models to characterize differences in the NAFLD group are shown in Supporting Table 1, and a summary of the multivariate predictive factors for all categories of outcome are shown in Table 2. Stage 4 fibrosis, past history of coronary heart disease, lower serum levels of cholesterol, lower levels of ALT, and lower platelet count were all independently associated with total liver-related complications. Independent predictors were also identified for the development of ascites (e.g., lower platelet count), encephalopathy (e.g., older age), gastroesophageal varices (e.g., stage 4 fibrosis, lower levels of ALT, lower platelet count, and lower levels of cholesterol), and myocardial infarction (e.g., past medical history of hypercholesterolemia and lower HDL cholesterol). No factors were identified as predictors for HCC or stroke. All these differences remained unaffected when the center variable was included in the models.

1C) Consequently, we investigated the expression of alpha smooth

1C). Consequently, we investigated the expression of alpha smooth muscle actin (α-SMA), a marker of activated HSCs. As expected, the CCl4-treated SMP30 KO mice group exhibited much lower numbers of α-SMA immunopositive

cells per field compared with that of the CCl4-treated WT mice (Fig. 1D,E). We confirmed identical immunoblot results (Fig. 1F,G). These data indicate that CCl4-induced liver fibrosis is inhibited in SMP30 KO mice and suggest that SMP30 might play an important role in the HSC activation. In the WT mice the CCl4 treatment induced a decreased level of SMP30 expression around the central vein characterized by necrotic hepatocytes and infiltration of inflammatory cells compared with that of the control group. However, in the SMP30 KO mice group we could not detect an SMP30 expression, R428 confirmed with the SMP30 KO mice (Fig. 2A,B). The results, using immunoblotting and RT-PCR for SMP30 Z IETD FMK expression, were observed to be the same as the results obtained using immunohistochemistry (Fig. 2C-E). In serum vitamin C level measurements, the control group of the WT mice indicated normal serum vitamin C levels,

whereas the serum vitamin C level of the CCl4-treated WT mice was significantly decreased. In SMP30 KO mice, the serum vitamin C was undetectable in both the control group and the CCl4-treated groups (Fig. 2F). These data reveal that the SMP30 expression significantly decreased due to CCl4-induced liver injury. It was noticed that the SMP30 KO mice exhibited higher TGF-β expression levels in comparison with those of the WT mice (Fig. 3A,B). To evaluate p-Smad3, downstream of TGF-β1, expression levels in CCl4-treated WT mice and SMP30 KO mice, immunoblotting and immunohistochemistry were performed. selleck screening library In immunoblot results, whole liver tissues of SMP30 KO mice exhibited an elevated total of p-Smad3 expression levels compared with that of WT mice (Fig. 3C,D). However, in immunohistochemistry, CCl4-treated WT mice, exhibited significantly higher numbers of nuclear p-Smad2/3-positive parenchymal cells and nonparenchymal

cells, compared with CCl4-treated SMP30 KO mice (Fig. 3E-G). We observed more critical differences in nonparenchymal cells than in hepatocytes, which means the nuclear translocation of p-Smad2/3 was more severely inhibited in nonparenchymal cells, including HSCs and inflammatory cells. To confirm the immunohistochemistry results, we extracted nuclear proteins from the whole liver tissue for immunoblotting. The cytoplasmic p-Smad3 expression showed the same expression pattern as the total p-Smad3 expression pattern (Fig. 3C,H). Additionally, extracts of nuclear proteins also revealed well-matched results with the immunohistochemical nuclear p-Smad2/3 expression (Fig. 3C,I). Surprisingly, CCl4-treated SMP30 KO mice showed a significantly lower level of ROS generation and lipid peroxidation compared with CCl4-treated WT mice (Fig.

1C) Consequently, we investigated the expression of alpha smooth

1C). Consequently, we investigated the expression of alpha smooth muscle actin (α-SMA), a marker of activated HSCs. As expected, the CCl4-treated SMP30 KO mice group exhibited much lower numbers of α-SMA immunopositive

cells per field compared with that of the CCl4-treated WT mice (Fig. 1D,E). We confirmed identical immunoblot results (Fig. 1F,G). These data indicate that CCl4-induced liver fibrosis is inhibited in SMP30 KO mice and suggest that SMP30 might play an important role in the HSC activation. In the WT mice the CCl4 treatment induced a decreased level of SMP30 expression around the central vein characterized by necrotic hepatocytes and infiltration of inflammatory cells compared with that of the control group. However, in the SMP30 KO mice group we could not detect an SMP30 expression, LY294002 solubility dmso confirmed with the SMP30 KO mice (Fig. 2A,B). The results, using immunoblotting and RT-PCR for SMP30 Staurosporine research buy expression, were observed to be the same as the results obtained using immunohistochemistry (Fig. 2C-E). In serum vitamin C level measurements, the control group of the WT mice indicated normal serum vitamin C levels,

whereas the serum vitamin C level of the CCl4-treated WT mice was significantly decreased. In SMP30 KO mice, the serum vitamin C was undetectable in both the control group and the CCl4-treated groups (Fig. 2F). These data reveal that the SMP30 expression significantly decreased due to CCl4-induced liver injury. It was noticed that the SMP30 KO mice exhibited higher TGF-β expression levels in comparison with those of the WT mice (Fig. 3A,B). To evaluate p-Smad3, downstream of TGF-β1, expression levels in CCl4-treated WT mice and SMP30 KO mice, immunoblotting and immunohistochemistry were performed. this website In immunoblot results, whole liver tissues of SMP30 KO mice exhibited an elevated total of p-Smad3 expression levels compared with that of WT mice (Fig. 3C,D). However, in immunohistochemistry, CCl4-treated WT mice, exhibited significantly higher numbers of nuclear p-Smad2/3-positive parenchymal cells and nonparenchymal

cells, compared with CCl4-treated SMP30 KO mice (Fig. 3E-G). We observed more critical differences in nonparenchymal cells than in hepatocytes, which means the nuclear translocation of p-Smad2/3 was more severely inhibited in nonparenchymal cells, including HSCs and inflammatory cells. To confirm the immunohistochemistry results, we extracted nuclear proteins from the whole liver tissue for immunoblotting. The cytoplasmic p-Smad3 expression showed the same expression pattern as the total p-Smad3 expression pattern (Fig. 3C,H). Additionally, extracts of nuclear proteins also revealed well-matched results with the immunohistochemical nuclear p-Smad2/3 expression (Fig. 3C,I). Surprisingly, CCl4-treated SMP30 KO mice showed a significantly lower level of ROS generation and lipid peroxidation compared with CCl4-treated WT mice (Fig.

The most common was isolated BA, the perinatal or acquired form o

The most common was isolated BA, the perinatal or acquired form of BA without associated major malformations

(Group 1). A second group was identified whereby not only gastrointestinal and cardiac anomalies were associated with BA in the absence of laterality defects, but also findings of genitourinary anomalies (Group 2). The most frequent renal anomalies reported in Group 2 were cystic kidneys or hydronephrosis. The observation that as many as 16% of children with BA may have heart disease and 3% may have renal anomalies makes differentiation from Alagille syndrome difficult. Likewise, the fact that infants with BA may occasionally have cystic kidneys may make differentiation from infants with polycystic liver-kidney disease a bit of a challenge, although cholestasis is rare in the latter condition. Venetoclax in vitro The incidence of clinically significant hydronephrosis in otherwise healthy newborns click here is ∼1 in 600 live births (0.17%).[16, 17] The incidence of hydronephrosis in BA patients in this study (all within Group 2) was 3 in 289 (1%), an almost 10-fold greater incidence compared to the general population. There

is scant recent literature on genitourinary and musculoskeletal abnormalities associated with BA. A case report described an infant with BASM, sacro-coccygeal agenesis, clubfoot, and ano-urinary incontinence.[18] A BA patient with anorectal agenesis and a complicated urogenital malformation was also described.[9] It is known that many genitourinary anomalies are associated with concurrent vertebral segmentation anomalies.[20] In our study of Group 2 patients with genitourinary

find more and musculoskeletal abnormalities, a similar association to that previously reported in the literature is suggested. In addition, some in Group 1 had clinically insignificant rib or vertebral defects. Twenty years ago Carmi et al.[21] reported that one-third of their 51 BA patients with major anomalies had laterality defects but two-thirds had cardiac, genitourinary, and musculoskeletal defects not associated with laterality defects. Our report confirms their findings, extends the spectrum of renal anomalies observed, and also strongly reinforces the authors’ suggestion that there is etiologic heterogeneity in BA. In a large study from England the incidence of splenic anomalies was 10.2%,[1] almost identical to the incidence identified in this study. The investigators from England also reported similar rates of intestinal malrotation, absent or interrupted IVC, and preduodenal portal vein in patients with splenic anomalies. Fifteen percent of the patients in their series with laterality defects were born to mothers with diabetes and this association was not found in their BA patients without laterality defects. Gestational diabetes was observed in 9.9%, 11.8%, and 23.3% of our infants in Groups 1, 2, and 3.

The most common was isolated BA, the perinatal or acquired form o

The most common was isolated BA, the perinatal or acquired form of BA without associated major malformations

(Group 1). A second group was identified whereby not only gastrointestinal and cardiac anomalies were associated with BA in the absence of laterality defects, but also findings of genitourinary anomalies (Group 2). The most frequent renal anomalies reported in Group 2 were cystic kidneys or hydronephrosis. The observation that as many as 16% of children with BA may have heart disease and 3% may have renal anomalies makes differentiation from Alagille syndrome difficult. Likewise, the fact that infants with BA may occasionally have cystic kidneys may make differentiation from infants with polycystic liver-kidney disease a bit of a challenge, although cholestasis is rare in the latter condition. Pexidartinib The incidence of clinically significant hydronephrosis in otherwise healthy newborns GSK1120212 clinical trial is ∼1 in 600 live births (0.17%).[16, 17] The incidence of hydronephrosis in BA patients in this study (all within Group 2) was 3 in 289 (1%), an almost 10-fold greater incidence compared to the general population. There

is scant recent literature on genitourinary and musculoskeletal abnormalities associated with BA. A case report described an infant with BASM, sacro-coccygeal agenesis, clubfoot, and ano-urinary incontinence.[18] A BA patient with anorectal agenesis and a complicated urogenital malformation was also described.[9] It is known that many genitourinary anomalies are associated with concurrent vertebral segmentation anomalies.[20] In our study of Group 2 patients with genitourinary

this website and musculoskeletal abnormalities, a similar association to that previously reported in the literature is suggested. In addition, some in Group 1 had clinically insignificant rib or vertebral defects. Twenty years ago Carmi et al.[21] reported that one-third of their 51 BA patients with major anomalies had laterality defects but two-thirds had cardiac, genitourinary, and musculoskeletal defects not associated with laterality defects. Our report confirms their findings, extends the spectrum of renal anomalies observed, and also strongly reinforces the authors’ suggestion that there is etiologic heterogeneity in BA. In a large study from England the incidence of splenic anomalies was 10.2%,[1] almost identical to the incidence identified in this study. The investigators from England also reported similar rates of intestinal malrotation, absent or interrupted IVC, and preduodenal portal vein in patients with splenic anomalies. Fifteen percent of the patients in their series with laterality defects were born to mothers with diabetes and this association was not found in their BA patients without laterality defects. Gestational diabetes was observed in 9.9%, 11.8%, and 23.3% of our infants in Groups 1, 2, and 3.

1) BA nuclear receptor FXR binds to two response elements in the

1) BA nuclear receptor FXR binds to two response elements in the HBV core promoter region and its activation by ligands regulates the HBV core promoter AZD1208 activity 2) HBx binds to Sirt-1, a deacetylase that regulates FXR activity and to PRMT1 transmethylase that is recruited by FXR upon its activation 3) the Na1-taurocholate cotransporting polypeptide (NTCP) responsible of BA uptake was identified as

a functional receptor for HBV and 4) reciprocally competition between virus and BA for NTCP induces a compensatory BA synthesis. We aimed at investigating the effect of FXR on HBV replication. First we screen HBV proteins interaction with FXR and found that among the HBV proteins, HBx was co-immunoprecipitated with FXR. Second we tested the effect of FXR modulators on HBV replication. Differentiated HepaRG cells that support a complete

replication cycle were infected with HBV and treated from day 2 to 10 post infection with FXR modulators. Treatment with BA derived 6-ethyl-chenodeoxycholic acid (6-ECDCA) or synthetic non-steroidal agonists, but not with antagonists or ursodeoxycholic acid, strongly inhibited the secretion of HBV DNA, HBsAg, HBeAg and of HBcAg synthesis AZD1152-HQPA price in a dose dependent manner (70 to 80 %inhibition at 1 or 10 micro-Mol) as well as the viral pregenomic RNA synthesis, cccDNA copies number and cellular total HBV DNA. Cyclosporine A, an NTCP ligand and HBV entry inhibitor, did not modify the effect of agonists suggesting that the effect did not depend on entry inhibition. Treatment consistently increased FXR activity as indicated by the increase of the small heterodimer partner (SHP) and decrease

of the apolipoprotein-A1 mRNAs expression, two FXR dependent genes, despite selleck chemical reduced FXR mRNA levels. In conclusion, BA-derived or synthetic agonists lead to a sustained repression of HBV replication in the HepaRG cell culture system. This effect is likely mediated by a modulation of FXR activation that could perturb the complex FXR network of transcription factors, which is highly targeted and controlled by HBx rather than by a competition between the virus and FXR agonist for NTCP and inhibition of virus entry. These data stress out the importance to exploit drug regulation of metabolism pathways in controlling HBV replication.

1) BA nuclear receptor FXR binds to two response elements in the

1) BA nuclear receptor FXR binds to two response elements in the HBV core promoter region and its activation by ligands regulates the HBV core promoter INK 128 activity 2) HBx binds to Sirt-1, a deacetylase that regulates FXR activity and to PRMT1 transmethylase that is recruited by FXR upon its activation 3) the Na1-taurocholate cotransporting polypeptide (NTCP) responsible of BA uptake was identified as

a functional receptor for HBV and 4) reciprocally competition between virus and BA for NTCP induces a compensatory BA synthesis. We aimed at investigating the effect of FXR on HBV replication. First we screen HBV proteins interaction with FXR and found that among the HBV proteins, HBx was co-immunoprecipitated with FXR. Second we tested the effect of FXR modulators on HBV replication. Differentiated HepaRG cells that support a complete

replication cycle were infected with HBV and treated from day 2 to 10 post infection with FXR modulators. Treatment with BA derived 6-ethyl-chenodeoxycholic acid (6-ECDCA) or synthetic non-steroidal agonists, but not with antagonists or ursodeoxycholic acid, strongly inhibited the secretion of HBV DNA, HBsAg, HBeAg and of HBcAg synthesis Cobimetinib molecular weight in a dose dependent manner (70 to 80 %inhibition at 1 or 10 micro-Mol) as well as the viral pregenomic RNA synthesis, cccDNA copies number and cellular total HBV DNA. Cyclosporine A, an NTCP ligand and HBV entry inhibitor, did not modify the effect of agonists suggesting that the effect did not depend on entry inhibition. Treatment consistently increased FXR activity as indicated by the increase of the small heterodimer partner (SHP) and decrease

of the apolipoprotein-A1 mRNAs expression, two FXR dependent genes, despite this website reduced FXR mRNA levels. In conclusion, BA-derived or synthetic agonists lead to a sustained repression of HBV replication in the HepaRG cell culture system. This effect is likely mediated by a modulation of FXR activation that could perturb the complex FXR network of transcription factors, which is highly targeted and controlled by HBx rather than by a competition between the virus and FXR agonist for NTCP and inhibition of virus entry. These data stress out the importance to exploit drug regulation of metabolism pathways in controlling HBV replication.

6 mm in the ESD group and 215 mm in the EMR group (p = 0003) T

6 mm in the ESD group and 21.5 mm in the EMR group (p = 0.003). The en bloc resection rate was 98.6% (75/76) in the ESD group and 61.9% (13/21) in the EMR group (p = 0.002). Although intraprocedural complications such

as oxygen desaturation and hypotension occurred in the ESD group (6.21%; 7/76), there were no life-threatening complications. On the other hand, no complications were observed in the EMR group (0%; 0/21) (p = 0.01). Conclusion: The technical Dasatinib concentration problems associated with ESD are now being resolved with improvements in needles and electric cautery devices. ESD for esophageal lesions is expected to achieve good outcomes without serious side effects. Key Word(s): 1. ESD; 2. EMR; 3. elderly; 4. esophagus Presenting Author: MASAAKI SHIMATANI Additional Authors: MAKOTO TAKAOKA, TOSHIYUKI MITSUYAMA, KOTA KATO, HIDEAKI MIYOSHI, TSUKASA

IKEURA, KAZUICHI OKAZAKI Corresponding Author: MASAAKI SHIMATANI Affiliations: Kansai Medical University, Kansai Medical University, Kansai Medical University, Kansai Medical University, Kansai Medical University, Kansai Medical University Objective: This present study aimed to evaluate the usefulness of a newly developed s- SBE for therapeutic ERCP in patients with gastrointestinal anatomy, and also to make a comparative assessment of the respective features and the distinctions of s- DBE and s-SBE. PLX4032 Methods: From March 2013 to November 2013, ERCP using a s- SBE (s- SBE assisted ERCP) was performed in 26 postoperative patients who had a reconstructed intestine in our hospital. We retrospectively evaluated the success rate of reaching the blind end, the mean time required to reach the blind end, the diagnostic success rate (defined as the rate of successfully imaging the bile ducts), the therapeutic success rate (defined as the rate of successfully completing endoscopic treatment), click here the mean procedure time (defined as the interval from the start of cannulation to removal

of the endoscope), and complications. Among 26 patients, the s-SBE assisted ERCP was applied to those 18 patients who previously had undergone s-DBE assisted ERCP and required the recurrent procedure. It allowed us the unique comparison of the s-DBE and the s-SBE in the same patients analyzing the data of the mean time required to reach the blind end and the mean procedure time. Results: The success rate of reaching the blind end was 92.3% (24/26 patients). As for 2 patients in whom s-SBE failed to reach the blind end, the procedure was successfully accomplished after switching the scope to s-DBE. The mean time required to reach the blind end was 28.6 min. (range, 5–58 min). The diagnostic success rate was 91.7% (22/24 patients). Regarding 2 patients in whom cholangiography was failed using s-SBE, they were the cases with Roux-en-Y gastrectomy and with naïve papilla. Switching the scope to s-DBE, the procedure including the ERCP-related intervention was successfully accomplished subsequently in both cases.

micropectus The loss and reduction of pectoral fins and associat

micropectus. The loss and reduction of pectoral fins and associated girdle elements in M. apectoralis represents another independent occurrence of this evolutionary phenomenon within the teleosts. The discovery of this species highlights the exceptional diversity of this biodiversity hotspot, the understanding of which is of critical importance with the pressures of pollution, overfishing and climate change threatening the speciose and evolutionarily significant diversity of this ancient lake. “
“Assessing environmental cues to coordinate birth or hatching has implications for both immediate and future survival. Predators may ultimately drive early or synchronous

birth or hatching, because group formation allows neonate swamping of predators and reduces the impact of prey switching when large groups of neonates ITF2357 price emerge from a nest. Turtles often emerge from the nest as a group, but temperature differences between the top and bottom of a nest are significant, making Forskolin in vivo synchronous hatching difficult. The mechanisms of synchronous hatching in turtles are not consistent; with eggs hatching prematurely in one species, and another species displaying accelerated embryonic development, whereby

embryos respond to the developmental rates of their siblings to hatch at similar developmental stages. If predation ultimately drives two disparate mechanisms of synchronous hatching, the physiological mechanisms behind synchronous, or early hatching, may be less developed in solitary nesting species, or species with smaller clutch sizes. I tested the hatching behavior of the Australian turtle, Chelodina selleck screening library longicollis, which has small clutch sizes and nests in isolation up to 1 km from water. I established developmental asynchrony within a clutch and used time to pipping to determine whether early or delayed hatching

occurred. I also assessed heart rates throughout incubation to monitor changes in development. Synchronous or early hatching did not occur in C. longicollis and embryos did not adjust their rates of development in response to more or less advanced sibs within a clutch. Thus, environmental cues that are related to sibling developmental rates and hatching and which influence hatching times in other species do not affect embryonic development in C. longicollis. These results support the group formation theory for synchronous or early hatching in species that nest at communal areas, or species with large clutch sizes. “
“Spatio-temporal partitioning is a viable mechanism for minimizing resource competition among sympatric species. The occurrence of sympatric large carnivores – tiger Panthera tigris, leopard Panthera pardus and dhole Cuon alpinus – in forests of the Indian subcontinent is complemented with high dietary overlap.

Laboratory observations

showed that C fecunda males only

Laboratory observations

showed that C. fecunda males only grazed on microscopic kelp gametophytes and small (<250 μm) sporophytes, rejecting larger sporophytes, whereas T. atra grazed on all the kelp stages. Recruitment to the C. fecunda treatments far exceeded that to bare rock in the absence of grazers but was not due to the physical presence of C. fecunda shells. We concluded that the key to M. pyrifera recruitment success in southern Chile this website is its capacity to colonize secondary substrates provided by the slipper limpet C. fecunda. “
“Group-II introns are selfish ribozymes that may have given rise to nuclear mRNA introns. Approximately 1,000 of these introns—derived from organelles, bacteria, and archaea—have been defined as either having no open reading frame (ORF) or encoding a single large protein, which is nearly always a variant of a reverse transcriptase-maturase-endonuclease (RT-Mat-En). While investigating intron ribozymes in cold-tolerant Chlamydomonas spp., we discovered an unusually large (3.9 kb) group-II intron in the psbA gene of Chlamydomonas subcaudata N. Wille, Csu.psbA. Reverse transcriptase-PCR (RT-PCR) analysis showed that Csu.psbA is efficiently spliced in vivo and

confirmed the predicted splice sites. The extreme HDAC inhibitor size of Csu.psbA is due to two large ORFs in domain IV of the predicted secondary structure. ORF1 encodes a typical RT-Mat-En protein (70 kDa), although it has an unusual start codon (ACG). ORF2, however, encodes a potentially novel protein (44 kDa)

that is predicted to have a transmembrane domain, immediately following an N-terminal thylakoid-targeting peptide, and to bind nucleic acids. BLAST analyses suggest that both ORFs are of bacterial origin and that ORF2 may have a TRKA domain. Csu.psbA is the first group-II intron reported to have two large, distinct ORFs and raises the possibility of identifying novel intron-encoded functions. “
“Although chlorophyll degradation pathways in higher plants have been well studied, little is known about the mechanisms of chlorophyll degradation in microalgae. In this article, we report the occurrence of a chlorophyll a derivative that has never been selleckchem discovered in photosynthetic organisms. This chlorophyll derivative emits no fluorescence and has a peculiar absorbance peak at 425, 451, 625, and 685 nm. From these features, it was identified as 132,173-cyclopheophorbide a enol (cPPB-aE), reported as a degradation product of chlorophyll a derived from prey algal cells in heterotrophic protists. We discovered cPPB-aE in six benthic photosynthetic dinoflagellates that are phylogenetically separated into four clades based on SSU rDNA molecular phylogeny. This is the first report of this chlorophyll derivative in photosynthetic organisms and we suggest that the derivative is used to quench excess light energy.