In treating patients with obstetric brachial plexus palsy,we noticed that denervated intrinsic muscles of the hand become irreversibly atrophic at a faster than denervated biceps.In a rat model of obstetric brachial p...In treating patients with obstetric brachial plexus palsy,we noticed that denervated intrinsic muscles of the hand become irreversibly atrophic at a faster than denervated biceps.In a rat model of obstetric brachial plexus palsy,denervated intrinsic musculature of the forepaw entered the irreversible atrophy far earlier than denervated biceps.In this study,isobaric tags for relative and absolute quantitation were examined in the intrinsic musculature of forepaw and biceps on denervated and normal sides at 3 and 5 weeks to identify dysregulated proteins.Enrichment of pathways mapped by those proteins was analyzed by Kyoto Encyclopedia of Genes and Genomes analysis.At 3 weeks,119 dysregulated proteins in denervated intrinsic musculature of the forepaw were mapped to nine pathways for muscle regulation,while 67 dysregulated proteins were mapped to three such pathways at 5 weeks.At 3 weeks,27 upregulated proteins were mapped to five pathways involving inflammation and apoptosis,while two upregulated proteins were mapped to one such pathway at 5 weeks.At 3 and 5 weeks,53 proteins from pathways involving regrowth and differentiation were downregulated.At 3 weeks,64 dysregulated proteins in denervated biceps were mapped to five pathways involving muscle regulation,while,five dysregulated proteins were mapped to three such pathways at 5 weeks.One protein mapped to inflammation and apoptotic pathways was upregulated from one pathway at 3 weeks,while three proteins were downregulated from two other pathways at 5 weeks.Four proteins mapped to regrowth and differentiation pathways were upregulated from three pathways at 3 weeks,while two proteins were downregulated in another pathway at 5 weeks.These results implicated inflammation and apoptosis as critical factors aggravating atrophy of denervated intrinsic muscles of the hand during obstetric brachial plexus palsy.All experimental procedures and protocols were approved by the Experimental Animal Ethics Committee of Fudan University,China(approval No.DF-325)in January 2015.展开更多
BACKGROUND Autoimmune gastritis(AIG)is recognized endoscopically by the presence of antrum-sparing corpus-dominant atrophy,known as reverse atrophy.However,a past Helicobacter pylori(H.pylori)infection can obscure thi...BACKGROUND Autoimmune gastritis(AIG)is recognized endoscopically by the presence of antrum-sparing corpus-dominant atrophy,known as reverse atrophy.However,a past Helicobacter pylori(H.pylori)infection can obscure this classic pattern.We present two cases of AIG with past H.pylori infection and highlight a novel endoscopic sign that may aid AIG recognition when typical features are absent.CASE SUMMARY One patient reported postprandial fullness,while the other was asymptomatic.Neither had a history of H.pylori eradication therapy.Both tested negative on a urea breath test and positive for anti-parietal cell antibodies.In both patients,endoscopy revealed mucosal atrophy involving both the corpus and antrum,which was counter to the characteristic reverse atrophy pattern typically seen in AIG.Beyond the atrophic border,we observed a distinct pattern of gyrus-like changes,manifesting as elevated mucosa between deep fissures.Histologically,targeted biopsies from these gyrus-like areas revealed parietal cell degeneration,lymphocytic infiltration,and hyperplasia of enterochromaffin-like cells,consistent with early histopathologic changes seen in AIG.These results supported diagnoses of AIG with past H.pylori infection.CONCLUSION Gyrus-like changes may serve as a novel endoscopic clue of AIG with past H.pylori infection.展开更多
基金supported by the National Natural Science Foundation of China,No.816019591003263(to JXW)the National Basic Research Program of China(973 Program),No.2014CB542203(to LC)
文摘In treating patients with obstetric brachial plexus palsy,we noticed that denervated intrinsic muscles of the hand become irreversibly atrophic at a faster than denervated biceps.In a rat model of obstetric brachial plexus palsy,denervated intrinsic musculature of the forepaw entered the irreversible atrophy far earlier than denervated biceps.In this study,isobaric tags for relative and absolute quantitation were examined in the intrinsic musculature of forepaw and biceps on denervated and normal sides at 3 and 5 weeks to identify dysregulated proteins.Enrichment of pathways mapped by those proteins was analyzed by Kyoto Encyclopedia of Genes and Genomes analysis.At 3 weeks,119 dysregulated proteins in denervated intrinsic musculature of the forepaw were mapped to nine pathways for muscle regulation,while 67 dysregulated proteins were mapped to three such pathways at 5 weeks.At 3 weeks,27 upregulated proteins were mapped to five pathways involving inflammation and apoptosis,while two upregulated proteins were mapped to one such pathway at 5 weeks.At 3 and 5 weeks,53 proteins from pathways involving regrowth and differentiation were downregulated.At 3 weeks,64 dysregulated proteins in denervated biceps were mapped to five pathways involving muscle regulation,while,five dysregulated proteins were mapped to three such pathways at 5 weeks.One protein mapped to inflammation and apoptotic pathways was upregulated from one pathway at 3 weeks,while three proteins were downregulated from two other pathways at 5 weeks.Four proteins mapped to regrowth and differentiation pathways were upregulated from three pathways at 3 weeks,while two proteins were downregulated in another pathway at 5 weeks.These results implicated inflammation and apoptosis as critical factors aggravating atrophy of denervated intrinsic muscles of the hand during obstetric brachial plexus palsy.All experimental procedures and protocols were approved by the Experimental Animal Ethics Committee of Fudan University,China(approval No.DF-325)in January 2015.
基金Supported by the General Program of the National Natural Science Foundation of China,No.81973920.
文摘BACKGROUND Autoimmune gastritis(AIG)is recognized endoscopically by the presence of antrum-sparing corpus-dominant atrophy,known as reverse atrophy.However,a past Helicobacter pylori(H.pylori)infection can obscure this classic pattern.We present two cases of AIG with past H.pylori infection and highlight a novel endoscopic sign that may aid AIG recognition when typical features are absent.CASE SUMMARY One patient reported postprandial fullness,while the other was asymptomatic.Neither had a history of H.pylori eradication therapy.Both tested negative on a urea breath test and positive for anti-parietal cell antibodies.In both patients,endoscopy revealed mucosal atrophy involving both the corpus and antrum,which was counter to the characteristic reverse atrophy pattern typically seen in AIG.Beyond the atrophic border,we observed a distinct pattern of gyrus-like changes,manifesting as elevated mucosa between deep fissures.Histologically,targeted biopsies from these gyrus-like areas revealed parietal cell degeneration,lymphocytic infiltration,and hyperplasia of enterochromaffin-like cells,consistent with early histopathologic changes seen in AIG.These results supported diagnoses of AIG with past H.pylori infection.CONCLUSION Gyrus-like changes may serve as a novel endoscopic clue of AIG with past H.pylori infection.
