Propiedad intelectual y derecho de la competencia en el sector farmacéutico durante la pandemia de COVID-19

La pandemia de COVID-19 demostró que las políticas públicas relacionadas con la propiedad intelectual y el derecho de la competencia no fueron adecuadas o suficientemente articuladas para permitir el acceso oportuno de la población a las vacunas de manera equitativa, debido a distorsiones en su fabricación, distribución y venta cuando éstas estuvieron disponibles durante la pandemia. Esta investigación tiene como objetivo analizar, desde una perspectiva jurídica, si los problemas observados se originan en una inadecuada aplicación de la legislación que regula la propiedad intelectual y su relación con otras políticas públicas vinculadas a la competencia, o, eventualmente, en el ejercicio abusivo de tales derechos, y que, como consecuencia, distorsionaría el proceso de competencia en los mercados nacionales y regionales.

The COVID 19 pandemic demonstrated that public policies related to intellectual property and competition law were not adequate or sufficiently articulated to allow timely access to vaccines in an equitable manner, due to distortions in the manufacture, distribution, and sale of COVID-19 vaccines when they were available during the pandemic. This research aims to analyze, from a legal perspective, whether the observed problems originate in an inadequate application of intellectual property legislation and its relationship with other public policies related to competition, or, eventually, in the abusive exercise of such rights, which, as a consequence, would distort the process of competition in national and regional markets.

A pandemia de COVID 19 demostrou que as políticas públicas relacionadas com a propriedade intelectual e o direito de competência não foram adequados ou suficientemente articulados para permitir o acesso oportuno da população às vacinas de maneira equitativa, devido a distorções na fabricação, distribuição e venda de vacinas COVID-19, quando estavam disponíveis durante a pandemia. Esta investigação tem como objetivo analizar, desde uma perspectiva jurídica, se os problemas observados se originam em uma inadequada aplicação da legislação que regula a propriedade intelectual e sua relação com outras políticas públicas vinculadas à competência ou, eventualmente, no exercício abusivo de tais direitos, e que, como consequência, distorceria o processo de competência nos mercados nacionais e regionais.

Establishment of Comprehensive Protection System for Intellectual Property of Single Herbs by Taking Callicarpa nudiflora of Jiuzhitang as An Example / 中国实验方剂学杂志

The development of single Chinese materia medica is an important direction of technological innovation in the field of Chinese materia medica at present， and the study of its comprehensive intellectual property protection system is of great significance to the intellectual property protection of the whole chain of innovative enterprises of single Chinese materia medica. Based on this， this paper takes the comprehensive protection system of intellectual property of Callicarpa nudiflora constructed by Jiuzhitang Pharmaceutical as a model to conduct empirical research， analyzes the protection forms applicable to intellectual property of Chinese materia medica， such as patents， administrative protection， trademarks， designs and intangible cultural heritages， and discusses the valuable and insufficient aspects of the protection system currently constructed by Jiuzhitang Pharmaceutical and puts forward the following suggestions：①paying attention to patent applications for planting/processing methods of raw medicinal materials， ②emphasizing the protection of geographical indications， authentic medicinal herbs， and new plant varieties， ③actively promoting product and technology upgrades， ④applying for data protection during product iteration， ⑤emphasizing the layout timing of patent and administrative protection， ⑥focusing on improving goodwill， ⑦enhancing awareness of intellectual property protection and promoting deep integration of industry， academia， and research. We hope that innovative enterprises engaged in the development of single Chinese materia medica can learn from the experience of the case， and optimize the strategy to better protect related products.

Study on fluvoxamine maleate sustained-release pellets and its compression technology / 药学学报

In this study, fluvoxamine maleate sustained-release pellet system tablets were prepared and were used to evaluate their release behaviors in vitro. Fluvoxamine maleate pellets were prepared using centrifugal-spherization method and coated by fluidized bed as bottom-spray. The multi-unit sustained-release pellets and appropriate excipients for prescription volumes were mixed uniformly and then compressed to tablets. Screening and determining the optimal formulation of drug loaded pellets through L8 (24) Taguchi experiment. Using Minitab software to design a DOE experiment with 24 partial factors, including material temperature, fan speed, atomization pressure, and spray rate to optimize the bottom spray coating process. Taking monostearate glycerol ester with a particle size of 24-40 mesh as the main diluent for tableting to relieve the delamination phenomenon between pellets and excipients during tablet pressing and reduce mechanical damage to the coating film. By examining the powder fluidity indexes such as angle of repose, bulk density, tapped density, and Hausner ratio of mixed particles, it was found that the flowability and compressibility are good and suitable for direct compression. Evaluate the basic properties of the sustained-release tablets, investigate the in vitro release behavior and study the release mechanism. The results of in vitro release test showed that the self-made sustained-release tablets could disintegrate into independent pellet units in phosphate buffer at pH 6.8 and release slowly within 24 h, which conformed to the first-order drug release model. The fluvoxamine maleate sustained-release pellet system tablets meet the requirements of preparation design and has a great commercial prospect.

Correlation of "Medicinal Tissue-property， Taste， and Efficacy-clinical Application" of Traditional Chinese Medicine from Plant Skin / 中国实验方剂学杂志

ObjectiveTo investigate the functions and characteristics of traditional Chinese medicine （TCM） from plant skin and their Chinese patent medicines and explore the related laws of the medicinal tissue， property， taste， efficacy， and clinical application， so as to strengthen the theory of identifying symptoms for qualities and provide references for the development and utilization of TCM from plant skin and their Chinese patent medicines. MethodBy reviewing the 2020 edition of the Chinese Pharmacopoeia and some local pharmacopeias， TCM from plant skin and their Chinese patent medicines were screened out， and the characteristics， functions， and precautions of TCM from plant skin and their Chinese patent medicines were summarized. Statistical analysis was carried out with Excel. ResultA total of 62 TCM from plant skin were found， mainly distributed in one kingdom， three phyla， and 31 families. In terms of the family genus， Rutaceae>Leguminosae>Cucurbitaceae. In terms of the medicinal tissue， bark>root bark>fruit bark>seed bark. In terms of property and taste， warm>cold>plain>cool>hot， and bitter>sweet=pungent>acidic. In terms of meridians， lung>liver>spleen>heart>colorectal>kidney>stomach=bladder. In terms of TCM classification， most of them belong to the category of heat-clearing medicines. There were 485 types of Chinese patent medicines from plant skin， with the most Chinese patent medicines containing Citri Reticulatae Pericarpium. Among the forms of administration， pills were the most predominant. In terms of the tastes of the medicines， bitter and sweet flavors predominated. In terms of functions， medicines for strengthening the body resistance were the most. For the precautions， contraindications during pregnancy were the most common. ConclusionThere is a correlation among medicinal tissue， property， taste， efficacy， and clinical application of TCM from plant skin. It is also necessary to pay attention to the contraindications of the medicines and rationally choose TCM from plant skin and their Chinese patent medicines under the guidance of TCM theory based on syndrome differentiation and treatment.

Improvement effects of 3，5，6，7，8，3′，4′-heptamethoxyflavone of Fructus Aurantii on rats with damp blockage of the middle energizer / 中国药房

OBJECTIVE To investigate the improvement effects of 3，5，6，7，8，3′，4′-heptamethoxyflavone （HMF） of Fructus Aurantii on rats with damp blockage of the middle energizer. METHODS The rats were randomly divided into normal group， model group， positive control group （Raceanisodamine tablet， 1 mg/kg）， HMF low-dose， medium-dose and high-dose groups （0.3， 0.6， 0.9 mg/kg）， with 7 rats in each group. Except for the normal group， the other groups were modeled by internal and external composite factors. After successful modeling， the rats in each group were given the corresponding drug or normal saline， once a day， for 14 days. The general behavioral states such as dietary intake， water intake and mental state of the rats were observed， and the fecal water content rate and saliva flow rate were measured. Hematoxylin-eosin （HE） staining was used to observe the pathological and morphology in gastric and small intestinal tissues of rats. The plasma content of aldosterone was detected， and the expression of aquaporins （AQP3） in the gastric tissue of rats was determined. RESULTS Compared with the normal group， the dietary intake and water intake of the model group rats were significantly decreased （P＜0.01）， the fecal water content rate， salivary flow rate， plasma content of aldosterone and the expression of AQP3 in gastric tissue were increased significantly （P＜0.01）. Gastric tissue injury invaded the mucosal muscle layer， resulting in mucosal muscle layer rupture； pathological and morphological changes such as small intestinal villous erosion and glandular structure destruction were observed in the small intestine. Compared with the model group， the dietary intake and water intake of rats were increased in HMF groups； fecal water content rate， salivary flow rate， plasma content of aldosterone， the expression of AQP3 in gastric tissue were decreased， most of the above differences were statistically significant （P＜0.05 or P＜0.01）. The pathological and morphological changes in the gastric and small intestine tissues of rats had been improved to varying degrees. CONCLUSIONS HMF of Fructus Aurantii with dry property HMF could improve the symptoms of rats with damp blockage of middle energizer， the mechanism of which may be associated with reducing the content of plasma aldosterone and down-regulating the expression of gastric AQP3.

Potential efficacy and mechanism of eight mild-natured and bitter-flavored TCMs based on gut microbiota: A review / 中草药·英文版

The mild-natured and bitter-flavored traditional Chinese medicines (MB-TCMs) are an important class of TCMs that have been widely used in clinical practice and recognized as safe long-term treatments for chronic diseases. However, as an important class of TCMs, the panorama of pharmacological effects and the mechanisms of MB-TCMs have not been systemically reviewed. Compelling studies have shown that gut microbiota can mediate the therapeutic activity of TCMs and help to elucidate the core principles of TCM medicinal theory. In this systematic review, we found that MB-TCMs commonly participated in the modulation of metabolic syndrome, intestinal inflammation, nervous system disease and cardiovascular system disease in association with promoting the growth of beneficial bacteria Bacteroides, Akkermansia, Lactobacillus, Bifidobacterium, Roseburia as well as inhibiting the proliferation of harmful bacteria Helicobacter, Enterococcus, Desulfovibrio and Escherichia-Shigella. These alterations, correspondingly, enhance the generation of protective metabolites, mainly including short-chain fatty acids (SCFAs), bile acid (BAs), 5-hydroxytryptamine (5-HT), indole and gamma-aminobutyric acid (GABA), and inhibit the generation of harmful metabolites, such as proinflammatory factors trimethylamine oxide (TAMO) and lipopolysaccharide (LPS), to further exert multiplicative effects for the maintenance of human health through several different signaling pathways. Altogether, this present review has attempted to comprehensively summarize the relationship between MB-TCMs and gut microbiota by establishing the TCMs-gut microbiota-metabolite-signaling pathway-diseases axis, which may provide new insight into the study of TCM medicinal theories and their clinical applications.

Bioceramic scaffolds with two-step internal/external modification of copper-containing polydopamine enhance antibacterial and alveolar bone regeneration capability / 浙江大学学报（英文版）（B辑：生物医学和生物技术）

Magnesium-doped calcium silicate (CS) bioceramic scaffolds have unique advantages in mandibular defect repair; however, they lack antibacterial properties to cope with the complex oral microbiome. Herein, for the first time, the CS scaffold was functionally modified with a novel copper-containing polydopamine (PDA(Cu2+‍)) rapid deposition method, to construct internally modified (*P), externally modified (@PDA), and dually modified (*P@PDA) scaffolds. The morphology, degradation behavior, and mechanical properties of the obtained scaffolds were evaluated in vitro. The results showed that the CS*P@PDA had a unique micro-/nano-structural surface and appreciable mechanical resistance. During the prolonged immersion stage, the release of copper ions from the CS*P@PDA scaffolds was rapid in the early stage and exhibited long-term sustained release. The in vitro evaluation revealed that the release behavior of copper ions ascribed an excellent antibacterial effect to the CS*P@PDA, while the scaffolds retained good cytocompatibility with improved osteogenesis and angiogenesis effects. Finally, the PDA(Cu2+)-modified scaffolds showed effective early bone regeneration in a critical-size rabbit mandibular defect model. Overall, it was indicated that considerable antibacterial property along with the enhancement of alveolar bone regeneration can be imparted to the scaffold by the two-step PDA(Cu2+) modification, and the convenience and wide applicability of this technique make it a promising strategy to avoid bacterial infections on implants.

Penicilina: da descoberta ao patenteamento do processo de produção em larga escala / Penicillin: from discovery to patenting the large-scale production process

Resumo A partir de pesquisa sobre a descoberta, a invenção e a inovação relacionadas à penicilina, por amostra de atividades de resolução de problemas tecnológicos rastreada pela distribuição, no período de 1929 a 1945, de trabalhos científicos, relatórios de governo, inovações e patentes, o artigo propõe uma reflexão sobre a importância do progresso científico para a segurança nacional. A análise destaca a trajetória tecnológica e os resultados na área de propriedade intelectual, considerando um fator importante a política implementada nos EUA para catalisar processos de inovação e oferecer condições institucionais para atender às demandas de defesa nacional, o que não significa necessariamente unicidade de solução em outros contextos.

Abstract This article examines discoveries, inventions, and innovations related to penicillin by sampling activities to solve technological problems which can be traced by the distribution of scientific articles, government reports, innovations, and patents between 1929 and 1945, and proposes reflection on the importance of scientific progress for national security. The analysis highlights the technological trajectory and outcomes in the area of intellectual property, considering US policy implemented to catalyze innovation and provide institutional conditions to meet national defense needs as an important factor, although this did not necessarily imply a unique solution in other contexts.

Patentes, acesso e produção local de medicamentos: reflexões a partir de experiências no SUS / Patents, access, and local production of medicines: reflections from experiences in the SUS

Resumo Este artigo procurou contribuir para a literatura e para o debate nacional e global sobre a superação de uma polarização relacionada ao aspecto jurídico e administrativo do processo de inovação, procurando se concentrar nas patentes como um fator condicionante das trajetórias tecnológicas que viabilizam o aprendizado em âmbito produtivo. Baseou-se em um arcabouço teórico e político relacionado à inovação e ao acesso a medicamentos, especialmente quanto aos direitos de Propriedade Intelectual, e na análise crítico-reflexiva de instrumentos de Propriedade Intelectual utilizados em Parcerias para o Desenvolvimento Produtivo (PDP), desenvolvidas por um instituto de tecnologia em fármacos sintéticos, público e nacional. Os resultados demonstram a relevância da compatibilização dos direitos de patentes com a construção de uma capacidade tecnológica e de inovação no país, vinculada ao acesso universal, especialmente quando envolverem produtos que se destinam ao tratamento de doenças graves, de alta complexidade tecnológica e de alto custo. Conclui-se que, para superação da dependência tecnológica e ampliação do acesso a medicamentos no Brasil, o Estado deve buscar o equilíbrio entre os interesses públicos e privados na área da saúde, a articulação entre os instrumentos jurídicos legais existentes e o alinhamento entre suas políticas de saúde, industriais, de CT&I e Propriedade intelectual.

Abstract This article aims to contribute to the literature and to the national and global debate on overcoming the polarization related to the legal and administrative aspect of the innovation process, seeking to focus on patents as a conditioning factor of the technological trajectories that enable learning in the productive scope. It was based on a theoretical and political framework related to innovation and access to medicines, especially regarding Intellectual Property rights, and on a critical-reflexive analysis of Intellectual Property instruments used in Productive Development Partnerships (PDP), developed by a public national institute for synthetic drug technology. The results demonstrate the importance of making patent rights compatible with the construction of technological and innovation capacities in the country, which are linked to universal access, especially when they involve products that are intended to treat serious, technologically complex and high-cost diseases. In conclusion, to overcome technological dependence and expand access to medicines in Brazil, the State must seek a balance between public and private interests in the healthcare area, articulate the existing legal instruments and align its health, industry, ST&I and intellectual property policies.

O fim da extensão das patentes e as Parcerias para Desenvolvimento Produtivo: reflexos no acesso a medicamentos no Brasil / The end of patent extensions and the Productive Development Partnerships: effects on access to medicines in Brazil

Resumo A covid-19 jogou luz sobre o impacto negativo da propriedade intelectual na saúde e deu nova relevância à Ação Direta de Inconstitucionalidade 5529/DF, que, acatada pelo Supremo Tribunal Federal em 2021, culminou na extinção da extensão automática de patentes no Brasil. Este estudo busca analisar o efeito do julgamento histórico da ADI 5529/DF sobre pedidos de patente e as patentes de interesse das Parcerias para Desenvolvimento Produtivo (PDP). Trata-se de um estudo com base em uma pesquisa documental de análise do andamento, até 31 de dezembro de 2020, de 90 pedidos de patente relacionados a 15 medicamentos objetos de PDP. Nos sites do Instituto Nacional de Propriedade Industrial, do Ministério da Saúde, da Anvisa e da Câmara de Regulação do Mercado de Medicamentos, foram pesquisadas variáveis para comparar o cenário patentário dos medicamentos com o das PDP. De 88 pedidos válidos, 28 patentes foram concedidas, das quais dezessete foram estendidas para mais de vinte anos (média de 24 anos e nove meses). A decisão do STF resultou em mais de 68 anos de monopólio perdidos, potencialmente desanuviando alternativas para a produção de genéricos no país. Neste momento de retomada das PDP, estratégias para a superação de barreiras patentárias deveriam ser incorporadas à política.

Abstract The COVID-19 pandemic has shed light on the negative impact of intellectual property on health and has given new relevance to the Direct Action of Unconstitutionality 5529/DF, which was ruled by the Supreme Court in 2021, resulting in the extinction of automatic patent extensions in Brazil. This documentary case study analyzes the effects of the judicial decision on patent applications and patents of interest for Productive Development Partnerships (PDP), investigating the progress of 90 patent applications related to 15 PDPs drugs of interest until Decembre 31, 2020. Variables for comparing the drug patent scenario with that of the PDPs were researched on the websites of the National Institute of Industrial Property, the Ministry of Health, ANVISA, and the Brazilian Medicines Market Regulation Chamber. Of 88 valid applications, 28 patents were granted, 17 of which had been extended to more than 20 years (24 years and 09 months average). The court decision resulted in a loss of over 68 years of monopoly, potentially opening alternatives for generic production. This resumption of the PDP policy should incorporate strategies to overcome patent barriers.

Psychometric Properties of the Revised Trolling Questionnaire in Argentinean Adults

Trolling with new technologies is a disruptive, deceptive, and destructive behavior, with great psychosocial, legal, and economical relevance. However, there are no studies in the scientific literature that have examined the properties of questionnaires to assess them. Therefore, the purpose of the present study was to observe the psychometric properties of the Revised Trolling Questionnaire by Buckels et al.'s in a sample of Argentinean adults. An intentional sample of 837 participants from Argentina (mean age = 28.4 years; 61% female) was formed. They completed the Buckels et al.'s Revised Trolling Questionnaire, measures of dark personality, Internet addiction, cyberstalking, and socio-demographic questions. Exploratory and confirmatory factorial analyses indicated a one-factor structure with correct fit statistics. Internal consistency was adequate: Cronbach's α = .80 and Omega coefficient (ω) = .81. Concurrent validity of the trolling questionnaire was observed with dark personality (Machiavellianism, narcissism and psychopathy), problematic Internet use (symptomatology and disfunctionality), and cyberstalking. Machiavellianism and disfunctionality were the most significant variables associated with trolling. Therefore, the Argentinean Spanish version of this test showed evidence of adequate psychometric properties.

El trolling mediante las nuevas tecnologías es un comportamiento disruptivo, molesto y destructivo, con una gran relevancia psicosocial, legal y jurídica. No existen estudios en la literatura científica que hayan examinado las propiedades de un instrumento para evaluarlo. El propósito del presente estudio fue observar las propiedades del Cuestionario Revisado de Trolling de Buckels et al. en una muestra de adultos argentinos. Se constituyó una muestra intencional de 837 participantes argentinos (edad promedio=28,4 años; 61% mujeres). Completaron el Cuestionario Revisado de Trolling de Buckels et al., un cuestionario de personalidad oscura (maquiavelismo, psicopatía y narcicismo), de adicción a internet, de cyberstalking y preguntas sociodemográficas. Un análisis factorial exploratorio como confirmatorio indicó una correcta estructura unifactorial. La consistencia interna fue adecuada: α de Cronbach = .80 y Omega coefficient (ω) = .81. La validez concurrente del cuestionario se observó con el cyberstalking, la personalidad oscura (maquiavelismo, narcisismo y psicopatía) y el uso problemático de Internet. El maquiavelismo y la disfuncionalidad eran las variables más asociadas al trolling. De este modo, la versión al español argentino de dicho test mostró evidencia de adecuadas propiedades psicométricas.

Ocupación y uso campesino de la tierra en el municipio de Pradera (1900-2010): Un siglo de tensiones socio-territoriales

RE S U M E N Si bien los lineamientos vigentes para el Ordenamiento Social de la Propiedad Rural-OSPR establecen, entre otros criterios, la transversalización del enfoque diferencial y la verificación de presencia de comunidades étnicas, no se reconoce expresamente el derecho a la tierra del campesinado. Partiendo de las perspectivas teóricas del Estructuralismo Agrario y del Enfoque Socio-Territorial, este trabajo busca proponer lineamientos complementarios para adelantar un proceso de Ordenamiento Social de la Propiedad Rural OSPR que reconozca este derecho, en los corregimientos que actualmente están siendo propuestos para la constitución de una Zona de Reserva Campesina (ZRC) en Pradera, Valle del Cauca. Para tal fin, se hace un acercamiento a la dinámica histórica del poblamiento y apropiación de la tierra por parte del campesinado y se geoespacializan dentro del polígono de la ZRC los predios por rango de tamaño, las coberturas y fertilidad del suelo y la zonificación de la Reserva Forestal, con los cuales se evidencia la existencia de una territorialidad campesina, la necesidad de redistribuir la tierra, de sustraer áreas de la reserva forestal y de acelerar la constitución de la Zona de Reserva Campesina (ZRC).

Embora as diretrizes atuais para a Ordenação Social da Propriedade Rural-OSPR estabeleçam, entre outros critérios, a integração da abordagem diferencial e a verificação da presença de comunidades étnicas, o direito à terra do campesinato não é expressamente reconhecido. Baseado nas perspectivas teóricas do Estruturalismo Agrário e da Abordagem Sócio-Territorial, este documento procura propor diretrizes complementares para avançar um processo de OSPR que reconheça este direito nos municípios que estão sendo propostos atualmente para a constituição de uma Zona de Reserva Camponesa (ZRC) em Pradera, Valle del Cauca. Para este fim, é feita uma abordagem da dinâmica histórica do assentamento e apropriação da terra pelo campesinato e a geo-espatização dentro do polígono da ZRC das propriedades por faixa de tamanho, cobertura e fertilidade do solo e o zoneamento da Reserva Florestal, que mostra a existência de uma territorialidade camponesa, a necessidade de redistribuir a terra, de subtrair áreas da reserva florestal e de acelerar a constituição da ZRC.

A B S T R A C T Although the current guidelines for the Social Planning of Rural Property (OSPR, acronym in Spanish) establish, among other criteria, the mainstreaming of a differential perspective and the inclusion of ethnic communities, land-rights for peasants are not expressly recognized. Drawing from the theoretical perspectives of Agrarian Structuralism and the Socio-Territorial Approach, this paper proposes complementary guidelines to support an OSPR process that recognizes this right, in the districts that are currently being projected for the constitution of a Peasant Reserve Zone (ZRC, acronym in Spanish) in Pradera, Valle del Cauca. To this end, we describe the historical dynamics of the settlement and appropriation of the land by the peasantry and, within the ZRC polygon, we geospatiolize the properties by range of size, soil coverage and fertility and the zoning of the Forest Reserve, through which we provide evidence for the existence of a peasant territoriality, the need to redistribute land, to subtract areas of the Forest Reserve and to accelerate the constitution of the ZRC.

A study on variation in spatial voltage distribution pattern across tissue layers between non-excitable plant and excitable plant

Understanding the mechanism of information processing in plants remains a challenging task even in the era of machine learning and artificial neural networks. Sir J.C. Bose had demonstrated through his experiments that the various modes of stimulation which effectively initiated nervous impulse in animals led to impulse generation in the excitable plant Mimosa pudica as well. In order to localize the tissue responsible for conduction of excitation in the petiole of Mimosa, Bose had constructed a specialized ‘Electric Probe’ (glass tip electrode). From this experiment, Bose found that there were different intensities of transmitted excitation in different tissue layers of the petiole. In this backdrop, an experimental research has been conducted to comparatively study the pattern of spatial voltage distribution across different tissue layers in both, a non-excitable plant Alternanthera philoxeroides (in stem) and an excitable plant Mimosa pudica (in petiole), by following experimental principles similar to that of Sir J. C. Bose. For the present experimental study, the electrical probes (glass tip electrode), similar to the one designed by J.C. Bose and the whole experimental setup has been constructed and developed completely in the laboratory. The results indicated a striking difference in the spatial voltage distribution pattern between the non-excitable and the excitable plant. Since Mimosa is an excitable plant having specialized mechanoreceptor cells, the change in spatial voltage distribution in the different layers of petiole, following excitation (uniform electrical stimuli) of a sub-petiole has been also studied, as an additional segment of the present research. In the present study a notable difference in the intensities of the transmitted excitation was also found upon electrical stimulation of one of the sub-petioles of the excitable plant M. pudica.

Research status and development of biodegradable zinc alloy as orthopedics implant / 生物医学工程学杂志

Znic (Zn) alloys with good cytocompatibility and suitable degradation rate have been a kind of biodegradable metal with great potential for clinical applications. This paper summarizes the biological role of degradable Zn alloy as bone implant materials, discusses the mechanical properties of different Zn alloys and their advantages and disadvantages as bone implant materials, and analyzes the influence of different processing strategies (such as alloying and additive manufacturing) on the mechanical properties of Zn alloys. This paper provides systematic design approaches for biodegradable Zn alloys as bone implant materials in terms of the material selection, product processing, structural topology optimization, and assesses their application prospects with a view to better serve the clinic.

Classification optimization of traditional Chinese medicine materials based on additive physical properties of powder / 中国中药杂志

According to the method of predicting the physical properties of oily powder based on the additive physical properties of Chinese medicinal powder, Dioscoreae Rhizoma and calcined Ostreae Concha with high sieve rate and good fluidity were mixed and crushed with Persicae Semen, Platycladi Semen, Raphani Semen, Ziziphi Spinosae Semen, and other typical oily materials with high fatty oil content in proportion to obtain 23 mixed powders. Fifteen physical properties such as bulk density, water absorption, and maximum torque force were measured, and the physical properties of typical oily powders were predicted. When the mixing and grinding ratio was in the range of 5∶1-1∶1, the r value in the correlation equation between the weighted average score of the mixed powder and the powder proportion ranged from 0.801 to 0.986, and the linearity was good, indicating that the method of predicting the physical properties of oily powder based on the additive physical properties of traditional Chinese medicine(TCM)powder was feasible. The results of cluster analysis showed that the classification boundaries of the five kinds of TCM materials were clear, and the similarity of the physical fingerprints of powdery and oily materials decreased from 80.6% to 37.2%, which solved the problem of fuzzy classification boundaries of powdery and oily materials due to the lack of representativeness of oily material model drugs. The classification of TCM materials was optimized, laying a foundation for optimizing the prediction model of the prescription of personalized water-paste pills.

Properties of new exotic traditional Chinese medicinal Vernonia amygdalina leaves:a literature research / 中国中药杂志

The leaves of Vernonia amygdalina Delile of the family Asteraceae(also known as "bitter leaf"), rich in biological activities, are used as both medicine and food for a long time in West tropical Africa. They have been introduced into Southeast Asia and Fujian and Guangdong provinces of China in recent years. However, little is known about the properties of the plant in traditional Chinese medicine(TCM), which limits its combination with other Chinese medicinal herbs. In this study, 473 articles on V. amygdalina leaves were selected from PubMed, Web of Science, CNKI, Wanfang Data and VIP to summarize their components, pharmacological effects and clinical research. V. amygdalina leaves presented anti-microbial, hypoglycemic, anti-hypertensive, lipid-lowering, anti-tumor, anti-inflammatory, antioxidant, and other pharmacological effects. On the basis of the theory of TCM properties, the leaves were inferred to be cold in property and bitter and sweet in flavor, acting on spleen, liver, stomach and large intestine and with the functions of clearing heat, drying dampness, purging fire, removing toxin, killing insects and preventing attack of malaria. They can be used to treat dampness-heat diarrhea, interior heat and diabetes, malaria, insect accumulation and eczema(5-10 g dry leaves by decoction per day and an appropriate amount of crushed fresh leaves applying to the affected area for external use). Due to the lack of TCM properties, V. amygdalina leaves are rarely used medicinally in China. The determination of medicinal properties of the leaves is conducive to the introduction of new exotic medicinal herbs and the development of new TCM resources, which facilitated further clinical application and research and development of Chinese medicinal herbs.

Analysis on patent development at 13 general hospitals in Beijing / 中华医院管理杂志

Objective:To analyze the patent development status of 13 general hospitals in Beijing, for reference in promoting the management and translation of intellectual property rights of public hospitals.Methods:13 tertiary general hospitals in Beijing as one of the top 100 hospitals in China in terms of science and technology evaluaton metrics in 2020 were selected as the research subjects. The patent application and authorization information of 13 hospitals was retrieved from the IncoPat technology innovation intelligence platform, during the period from January 1, 2012 to December 31, 2021. The patent application and authorization status, international patent classification distribution, inventor information, patent validity, and registration of patent transfer were analyzed.Results:The numbers of patent applications and authorizations from 13 hospitals increased from 123 and 13 in 2012 to 2 053 and 2 368 in 2021, respectively. From 2012 to 2021, 13 hospital applied for 10 050 patents and authorized 6 896 patents, including 906 authorized invention patents, 5 863 utility model patents, and 127 appearance design patents. Valid patents amounted to 5 925, accounting for 85.92%, and valid authorized invention patents amounted to 796, accounting for 13.43%. 110 of these patents were transferred or licensed, accounting for 1.60% of the authorized patents.Conclusions:Aapplied and authorizated patents were rising year by year, but the ratios of invention patents and patient translation remained at a low level. The author suggestted that hospitals should highlight the value orientation of patents, strengthen-industry-academia-research cooperation, establish a professional management team and standardized management system for intellectual property, cultivate high-value patents, conduct pre patent application evaluation and screening, and improve patent conversion and technological innovation capabilities.

Design and application of an information management platform for medical device innovation and transformation / 中华医学科研管理杂志

Objective:To promote clinical innovation and patent transformation, Ningbo First Hospital built a medical device innovation and transformation management information platform to optimize the supply of clinical innovation and transformation resources and explore a new path of clinical innovation and transformation management.Methods:A series of processes of medical device innovation research, patent declaration, and transformation were managed by the cloud data platform based on Springboot micro-service architecture. The functions and practices of the medical device innovation and transformation management information platform were elaborated on in detail, and the problems in the platform construction were discussed.Results:The medical device innovation and transformation management information platform has been accepted and recognized by clinical care, enterprises, and third-party agents for shortening the research and development and transformation time of innovative projects.Conclusions:The medical device innovation and transformation management information platform can promote the output and achievement transformation of clinical innovative projects.

Research progress on surface modification of titanium implants by strontium ions / 口腔疾病防治

@#Traditional titanium implants do not completely meet the clinical requirements because they are bioinert. The surface of titanium implants, modified by strontium ions, can enhance osseointegration and reduce peri-implantitis. In this paper, the biological properties of titanium implant surfaces modified by strontium ions were reviewed. Strontium ions can be coated on the implant surface by hydrothermal treatment, electrochemical deposition, phosphate chemical conversion, flame-spraying, supramolecular self-assembly, magnetron sputtering, laser deposition and alkali etching. Implant surfaces modified by strontium ions can not only promote osteogenesis and early osseointegration but also inhibit bacterial growth and reduce postoperative infections. Even better osseointegration and antibacterial effects can be achieved when strontium ions are incorporated with other elements, such as silver, zinc, gallium, and calcium. However, most of the studies on the use of strontium ion-modified titanium implants are animal experiments and in vitro experiments, and the observation time is short compared with the actual service life of the implants. Thus, the conclusions obtained may be different from the actual clinical application, and the long-term effects need to be studied. In addition, the osteogenic effects of various modification methods also need to be compared. Future research can focus on the following points: ① to find efficient modification methods that can be widely used in the clinic; ②to study how to control the concentration of strontium ions near the implant to exert their biological function and reduce their toxic side effects; and ③ to conduct long-term follow-up clinical trials to observe their osteogenic and antibacterial effects.

Characterization of a D-mannitol oxidase from Paenibacillus sp. and its application in the preparation of D-mannose / 生物工程学报

D-mannose has many functional activities and is widely used in food, medicine, agriculture and other industries. D-mannitol oxidase that can efficiently convert D-mannitol into D-mannose has potential application in the enzymatic preparation of D-mannose. A D-mannitol oxidase (PsOX) was found from Paenibacillus sp. HGF5. The similarity between PsOX and the D-mannitol oxidase (AldO) from Streptomyces coelicolor was 50.94%. The molecular weight of PsOX was about 47.4 kDa. A recombinant expression plasmid pET-28a-PsOX was constructed and expressed in Escherichia coli BL21(DE3). The Km and kcat/Km values of PsOX for D-mannitol were 5.6 mmol/L and 0.68 L/(s·mmol). Further characterization of PsOX showed its optimal pH and temperature were 7.0 and 35 ℃, respectively, while its enzyme activity could be stably remained below 60 ℃. The molar conversion rate of 400 mmol/L D-mannitol by PsOX was 95.2%. The whole cells of PsOX and AldO were used to catalyze 73 g/L D-mannitol respectively. The reaction catalyzed by PsOX completed in 9 h and 70 g/L D-mannose was produced. PsOX showed a higher catalytic efficiency compared to that of AldO. PsOX may facilitate the enzymatic preparation of D-mannose as a novel D-mannose oxidase.